JP6230433B2 - Work vehicle - Google Patents

Description

  The present invention relates to a work vehicle including an engine having an exhaust portion, an exhaust purification device having an intake portion connected to the exhaust portion, and a support frame that supports the exhaust purification device.

  In a tractor, which is an example of a work vehicle, an exhaust purification device (exhaust gas purification device) configured to be disassembled in the longitudinal direction in order to enable maintenance such as replacement of a built-in DPF (diesel particulate filter) is welded. Some are configured to be connected to a center frame via a support frame having a structure (see, for example, Patent Document 1).

JP 2013-49405 A (paragraph number 0034, FIGS. 2 to 4)

  As described above, since the exhaust purification device is configured to be disassembled in the longitudinal direction, between the intake portion for connecting the engine exhaust portion distributed in the longitudinal direction and the connecting portion to the support frame, Individual differences relating to the positional relationship in the longitudinal direction are likely to occur. Therefore, when the exhaust purification device is connected to the center frame via the support frame, the position of the intake portion in the exhaust purification device is displaced from the connection position to the exhaust portion of the engine in the longitudinal direction of the exhaust purification device. It becomes easy to invite.

  On the other hand, in the above configuration, since a support frame having a welded structure is used to support the exhaust gas purification device, when the above-described misalignment occurs, the intake portion of the exhaust gas purification device and the engine It takes time to connect to the exhaust. That is, there is room for improvement in improving the ease of assembly of the exhaust purification device.

  An object of the present invention is to improve the assembly of an exhaust purification device.

As means for solving the problems of the present invention ,
A work vehicle according to the present invention includes an engine having an exhaust portion, an exhaust purification device having an intake portion connected to the exhaust portion, and a support frame that supports the exhaust purification device,
The support frame is externally fitted on the first part connected to the first band member fitted on one end in the longitudinal direction of the exhaust purification device, and on the other end side in the longitudinal direction on the exhaust purification device . The engine of the first part configured to be divided into a third part that can be divided into a second part that is connected to the second band member and a third part that is connected to the engine, and is connected to the first band member A first adjuster for adjusting the position of the exhaust purification device in the longitudinal direction relative to the engine; and a position adjustment of the second component connected to the second band member in the longitudinal direction of the exhaust purification device relative to the engine And a second adjusting section that enables the above.

  According to this means, in the exhaust purification device, even if there is an individual difference or the like regarding the positional relationship in the longitudinal direction of the exhaust purification device between the intake portion and the connecting portion with respect to the support frame, the exhaust purification is performed according to the individual difference. The respective positions of the first part and the second part of the support frame connected to the device can be adjusted in the longitudinal direction of the exhaust purification device.

  As a result, regardless of individual differences in the longitudinal direction of the exhaust purification device, the exhaust purification device can be easily fixed and installed at an appropriate position with respect to the engine, and the intake portion of the exhaust gas purification device and the exhaust portion of the engine Connections can be made easily and properly.

  Therefore, it is possible to improve the assembling property of the exhaust purification device.

As one of the means for making the present invention more suitable,
The first part includes a first connecting part that is detachably bolted to a first connected part provided in the third part,
The second component includes a second connecting portion that is detachably bolted to a second connected portion provided in the third component,
The first adjusting portion is configured by a long hole formed in at least one of the first connecting portion and the first connected portion long in a direction along the longitudinal direction of the exhaust purification device,
The second adjusting portion is configured by a long hole formed long in at least one of the second connecting portion and the second connected portion along the longitudinal direction of the exhaust purification device.

  According to this means, the assembling property of the exhaust emission control device can be improved with a simple configuration having only the long hole as the first adjusting portion and the long hole as the second adjusting portion.

As one of the means for making the present invention more suitable,
Each of the first adjustment portion and the second adjustment portion has a length in a short direction of the long hole larger than a bolt diameter, and the length of the first component or the second component with respect to the engine is increased. The position of the hole can be adjusted in the short direction.

  According to this means, in the exhaust purification device, even if there is an individual difference or the like regarding the positional relationship in the short direction of the long hole perpendicular to the longitudinal direction of the exhaust purification device between the intake portion and the connecting portion to the support frame, According to the individual difference, the positions of the first part and the second part of the support frame connected to the exhaust purification device can be adjusted in the short direction of the long hole.

  As a result, regardless of individual differences in the longitudinal direction of the exhaust purification device and the short direction of the long hole orthogonal to the longitudinal direction, the exhaust purification device can be easily fixed and installed at an appropriate position with respect to the engine. The connection between the intake part of the exhaust gas purifying device and the exhaust part of the engine can be performed more easily and appropriately.

  Therefore, it is possible to further improve the assembling property of the exhaust emission control device while having a simple configuration including only the long hole as the first adjustment part and the long hole as the second adjustment part.

As one of the means for making the present invention more suitable,
The first component is configured so that the two first connecting portions are not exhausted so as not to overlap with each other in a short direction of the exhaust purification device at a first set distance in a short direction. Deployed in the longitudinal direction of the purification device in a state shifted by the second set distance,
The second part is the same as the case of the first connecting part in the short direction, with the two second connecting parts being separated by a third set distance in the short direction of the exhaust gas purification apparatus. Deployed in a state shifted by a fourth set distance in the longitudinal direction of the exhaust emission control device so as not to overlap in a direction view,
The third component is configured such that the two first connected parts are arranged at positions that are separated from each other by the first set distance in the short direction of the exhaust gas purification device, similarly to the two first connecting parts. The exhaust gas purification device is disposed in a state of being displaced by the second set distance in the longitudinal direction of the exhaust gas purification device so as not to overlap in a unidirectional view. As in the case of the two connecting portions, the exhaust purification device is arranged in the longitudinal direction of the exhaust purification device so as not to overlap in the short direction of the exhaust purification device by a third set distance so as not to overlap in the short direction. Deployed with the fourth set distance shifted.
The elongated holes are formed in each of the two first connecting portions and the two second connecting portions, and screwed portions are respectively connected to the two first connected portions and the two second connected portions. It has.

  According to this means, the bolt connection between the first connecting part of the corresponding first part and the first connected part of the third part, and the second connecting part of the corresponding second part and the second connected part of the third part. Bolt connection with a connection part can be performed from the one side of the transversal direction of an exhaust gas purification apparatus.

  A screw engaging portion that enables bolt connection to each first connecting portion of the first component to each of the first connected portions and each of the second connected portions of the third component connected to the engine; and The first component and the second component with respect to the third component from one side in the short direction of the exhaust gas purification device are provided by including a screw connection portion that enables bolt connection with each second connection portion of the second component. It becomes easy to perform bolt connection operation.

  Therefore, the assembling property of the exhaust emission control device can be further improved.

As one of the means for making the present invention more suitable,
The first part includes a connecting part that is detachably bolted to a connected part provided in the engine, and a first connecting part that is detachably bolted to a first connected part provided to the third part. Prepared,
The second component includes a second connecting portion that is detachably bolted to a second connected portion provided in the first component,
The first adjusting portion is formed at least in one of the connecting portion, the first connecting portion, the connected portion, and the first connected portion in a direction along the longitudinal direction of the exhaust emission control device. Consists of long holes,
The second adjusting portion is configured by a long hole formed long in at least one of the second connecting portion and the second connected portion along the longitudinal direction of the exhaust purification device.

  According to this means, the assembling property of the exhaust emission control device can be improved with a simple configuration having only the long hole as the first adjusting portion and the long hole as the second adjusting portion.

As one of the means for making the present invention more suitable,
The second adjusting portion is configured such that the length of the long hole in the short direction is larger than the bolt diameter, and the position of the second part in the short direction of the long hole with respect to the engine can be adjusted.
The first component includes a third coupling portion that is bolt-coupled to a third coupled portion that extends from one end side in the longitudinal direction of the exhaust gas purification device toward the first component,
At least one of the third connecting portion and the third connected portion is formed with a connecting hole having a length in the same direction as the short direction of the long hole in the second adjusting portion larger than the bolt diameter. Thus, the connection hole constitutes a third adjustment portion that enables the position adjustment of the third connection portion in the short direction of the long hole with respect to the engine.

  According to this means, in the exhaust purification device, even if there is an individual difference or the like regarding the positional relationship in the short direction of the long hole perpendicular to the longitudinal direction of the exhaust purification device between the intake portion and the connecting portion to the support frame, According to the individual difference, the positions of the first part and the second part of the support frame connected to the exhaust purification device can be adjusted in the short direction of the long hole.

  As a result, regardless of individual differences in the longitudinal direction of the exhaust purification device and the short direction of the long hole orthogonal to the longitudinal direction, the exhaust purification device can be easily fixed and installed at an appropriate position with respect to the engine. The connection between the intake part of the exhaust gas purifying device and the exhaust part of the engine can be performed more easily and appropriately.

  Therefore, it is possible to further improve the assemblability of the exhaust emission control device while having a simple configuration that only includes the long hole as the second adjustment portion and the connection hole as the third adjustment portion.

As one of the means for making the present invention more suitable,
The exhaust purification device is configured so that the two third connected portions do not overlap with each other in a short direction of the exhaust purification device by a first set distance so as not to overlap in the short direction. Deployed with the second set distance shifted in the short direction perpendicular to the short direction,
The second part is the same as the case of the first connecting part in the short direction, with the two second connecting parts being separated by a third set distance in the short direction of the exhaust gas purification apparatus. Deployed in a state shifted by a fourth set distance in the longitudinal direction of the exhaust emission control device so as not to overlap in a direction view,
The first component is configured such that the two third connecting portions are disposed at positions that are separated by the first set distance in the short direction of the exhaust emission control device, similarly to the two third connected portions. In a state where the second set distance is shifted in the short direction perpendicular to the short direction so as not to overlap in one direction in the direction, and the two second connected parts, Similarly to the two second connecting portions, the exhaust purification device is disposed at a position separated by the third set distance in the short direction of the exhaust purification device so as not to overlap when viewed in one direction in the short direction. Deploy in a state that is displaced by the fourth set distance in the longitudinal direction,
The elongated hole is formed in each of the first connecting part and the two second connecting parts, and a screwing part is provided in each of the first connected part and the two second connected parts. .

  According to this means, the bolt connection between the third connected portion of the corresponding exhaust purification device and the third connecting portion of the first component, and the second connected portion of the corresponding first component and the second of the second component. Bolt connection with a connection part can be performed from the one side of the transversal direction of an exhaust gas purification apparatus.

  In addition, the first connected portion of the third part connected to the engine is provided with a screwing portion that enables bolt connection with the first connecting part of the first component, and the second connected to the engine and the third part. By providing each second connected portion of one component with a screwing portion that enables bolt connection with each second connecting portion of the second component, the third from one side in the short direction of the exhaust gas purification device. The bolt connection operation of the first part with respect to the part and the bolt connection operation of the second part with respect to the first part can be easily performed.

  Therefore, the assembling property of the exhaust emission control device can be further improved.

It is a left view of a tractor. It is a vertical left side view of a driving part. It is a cross-sectional plan view of a prime mover. It is a left view of an exhaust gas mixing pipe. FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4 illustrating the configuration of the exhaust mixing pipe. It is a disassembled perspective view of the principal part which shows the support structure of an exhaust gas purification apparatus. It is a vertical left view of the principal part which shows the support structure of an exhaust gas purification apparatus. They are a perspective view (a) and an exploded perspective view (b) showing a support structure of an engine control unit in a specification with a power steering mechanism. They are a perspective view (a) and an exploded perspective view (b) showing a support structure of an engine control unit in a specification without a power steering mechanism. It is a disassembled perspective view of the principal part which shows the support structure of the exhaust gas purification apparatus in another embodiment. It is a vertical left view of the principal part which shows the support structure of the exhaust gas purification apparatus in another embodiment. It is a vertical rear view of the principal part which shows the support structure of the exhaust gas purification apparatus in another embodiment.

  Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the present invention is applied to a tractor that is an example of a work vehicle will be described with reference to the drawings.

  As shown in FIG. 1, the tractor illustrated in this embodiment includes a driving unit 2 in the front half of the body frame 1 and a boarding operation unit 3 in the rear half of the body frame 1. A front wheel 4 as a steerable wheel that can be driven to the left and right of the driving unit 2 is provided, and a rear wheel 5 as a brakeable drive wheel is provided to the left and right of the boarding operation unit 3 to form a four-wheel drive type. ing.

  As shown in FIGS. 1 and 2, the vehicle body frame 1 includes a water-cooled vertical diesel engine (hereinafter referred to as an engine) having a common rail system (not shown) at the rear of a front frame 6 that forms the front half thereof. 7) and a housing unit 8 that forms the rear half of the body frame 1 is connected to the lower portion of the engine 7. A partition wall 9 is provided at the front end of the housing unit 8 so as to separate the driving unit 2 and the boarding operation unit 3, and an inverted U-shaped bonnet support 10 is installed at the upper end of the partition 9. doing. In addition, a substantially gate-shaped steering frame 11 as viewed in the front-rear direction is erected in a rearward tilted position at a rear portion of the partition wall 9 in the housing unit 8.

  As shown in FIG. 1, the housing unit 8 has a pair of left and right lift arms 12 that enable a lifting device 12 such as a rotary tiller or a plow connected to the rear of the tractor to be lifted and lowered. When a lift type hydraulic cylinder 13 that swings the left and right lift arms 12 in the vertical direction and a drive type work device such as a rotary tiller is connected to the rear part of the tractor, work power is taken out to the work device. It is equipped with a PTO shaft 14 that enables In addition, a power transmission from the engine 7 is transmitted to the left and right front wheels 4 and the left and right rear wheels 5 for traveling, and power from the engine 7 is transmitted to the PTO shaft 14 for work. Equipped with work transmission system, etc.

  As shown in FIGS. 2 and 3, the prime mover 2 includes an engine room formed by a partition wall 9 and a bonnet 15, an engine 7, a battery 16, an air cleaner 17, a columnar exhaust purification device 18, a radiator 19, a cooling unit. A fan 20 and an L-shaped fuel tank 21 in plan view are provided and configured. The engine 7 is arranged on the lower side of the rear half of the engine room in a posture in which an output shaft (not shown) faces forward and backward. The battery 16 and the air cleaner 17 are arranged at the front end of the engine room. The exhaust emission control device 18 is disposed in a position above and behind the left half of the engine 7 in the rear half of the engine room, with the longitudinal direction thereof being a longitudinal orientation along the longitudinal direction of the vehicle body. The radiator 19 and the cooling fan 20 are disposed between the rear engine 7 and the front end battery 16 and air cleaner 17. The fuel tank 21 is arranged such that its narrow front side is positioned above the right half of the engine 7 and its wide rear side is positioned above the partition wall 9.

  As shown in FIGS. 2 and 3, the engine 7 has a support member (not shown) erected at the upper end of the front end portion thereof. A tank support 23 for receiving and supporting the fuel tank 21 from below is installed over the upper end of the support member and the upper end of the partition wall 9. The tank support 23 has a front shielding plate 25 facing the front end surface of the fuel tank 21 on a bottom shielding plate 24 having an L shape in plan view that partitions the support member and the partition wall 9 between the engine 7 and the fuel tank 21. And an L-shaped horizontal shielding plate 26 in plan view that partitions the exhaust purification device 18 and the fuel tank 21 upright, and a heat shielding space for the engine 7 and the exhaust purification device 18 between the bonnet 15. Is formed.

  The bottom shielding plate 24 is formed in a stepped shape that rises forward from the upper end of the partition wall 9 toward the upper end of the support member 22, so that the engine 7 is disposed below and the intake air that extends from the air cleaner 17 to the engine 7. The piping area of the pipe 27 is secured. By forming the bottom surface of the fuel tank 21 in a step shape along the bottom shielding plate 24, the fuel tank 21 can be easily positioned in the front-rear direction with respect to the bottom shielding plate 24 while increasing its volume. A plurality of plate-like vibration isolating rubbers 28 are provided on the upper surface of the bottom shielding plate 24 between the bottom shielding plate 24 and the bottom surface of the fuel tank 21.

  As shown in FIGS. 1 and 2, the boarding operation unit 3 includes a steering wheel 29, a meter panel 30, a driver seat 31, and the like. The steering wheel 29 is linked to the left and right front wheels 4 via a steering shaft (not shown) and a fully hydraulic power steering mechanism 33 (see FIG. 8). The steering shaft is rotatably installed in a steering post 34 erected on the upper end of the steering frame 11 in the same backward tilt posture as the steering frame 11. The meter panel 30 is disposed in a forward leaning posture at a position above the steering frame 11 and in front of the steering post 34.

  As shown in FIGS. 1 to 3, the bonnet support 10 includes left and right brackets 35 extending from the upper end portion toward the front upper side. And the support shaft 36 of the left-right direction is constructed over the extension end of those brackets 35. As shown in FIG. On the other hand, in the bonnet 15, left and right hook fittings 37 are distributed and arranged at positions on both left and right ends on the inner surface of the rear end portion of the top plate, with the rear end side being the open side. In addition, L-shaped engagement fittings 38 are provided on the inner surface of the rear end portion of the top plate on the left and right center side with the rear end side being the open side. A retaining bolt 39 for retaining the holding shaft 36 between the bonnet 15 and the engaging metal 38 is detachably screwed to the rear end side of the engaging metal 38 so that each hook metal fitting can be attached. 37 is configured to prevent detachment from the support shaft 36.

  With this configuration, the left and right hook metal fittings 37 and the engagement metal fittings 38 provided on the bonnet 15 are engaged with the left and right support shafts 36 provided on the bonnet support 10, and then the support shafts 36 are removed with the retaining bolts 39. By stopping, the bonnet 15 can be easily and reliably attached to the bonnet support 10 in a state in which the bonnet 15 can be opened and closed by swinging up and down with the left and right support shafts 36 as fulcrums. Moreover, the bonnet 15 can be easily removed from the bonnet support 10 by releasing the retaining of the support shaft 36 by the retaining bolt 39.

  Thereby, for example, the bonnet 15 with respect to the bonnet support 10 is simplified while simplifying the configuration as compared with the case where each of the left and right hook fittings 37 is provided with a threaded portion that allows the retaining bolt 39 to be attached and detached. Can be easily attached and detached.

  As shown in FIGS. 2 and 3, the bonnet 15 is urged to swing in the opening direction by a bonnet damper 40 disposed between the fuel tank 21 and the horizontal shielding plate 26 of the tank support 23. Further, the lock mechanism (not shown) can be fixedly held in a closed posture against the urge of the bonnet damper 40.

  As shown in FIGS. 2 to 6, the exhaust gas purification device 18 includes an oxidation catalyst 50 and a DPF (diesel particulate filter) 51 in the front and rear intermediate portions. Further, an intake portion 18A is provided at the lower end portion of the rear end portion, and an exhaust portion 18B is provided at the lower end portion of the front end portion. In order to enable maintenance such as replacement, the rear end portion including the intake portion 18A, the rear portion side of the front and rear intermediate portion including the oxidation catalyst 50, the front portion side of the front and rear intermediate portion including the DPF 51, and the exhaust The front end portion including the portion 18B can be disassembled.

The intake part 18A of the exhaust purification device 18 is connected to the exhaust part 52A of the exhaust manifold 52 provided at the upper left part of the engine 7 which is the exhaust part 7A of the engine 7. The intake portion 18A and the exhaust portion 52A can be connected to each other by connecting bolts of regular triangular flanges 18C and 52B provided at their connection ends. The exhaust part 18 </ b> B of the exhaust purification device 18 is connected to one end of the exhaust pipe 53. The exhaust part 18B and the exhaust pipe 53 are connected to each other by bolting square flanges 18D and 53A provided at their connection ends.

  The exhaust pipe 53 extends from the exhaust part 18 </ b> B of the exhaust purification device 18 toward the left side portion of the front frame 6. Then, the extended end is connected to the rear end portion of the hexagonal cross section of the exhaust gas mixing pipe 54 which is bolted to the left side portion of the front frame 6 in the forwardly lowered posture, and the inner peripheral surface of the rear end portion and the extended end portion By inserting it with a gap between it and the outer peripheral surface, an ejector effect is obtained when exhaust from the engine 7 flows from the exhaust pipe 53 to the exhaust mixing pipe 54.

  Thereby, in the exhaust mixing pipe 54, the outside air flowing into the exhaust mixing pipe 54 from the gap between the exhaust pipe 53 and the exhaust mixing pipe 54 can be mixed into the exhaust from the engine 7, thereby reducing the exhaust temperature. Can do.

  As shown in FIGS. 2, 4, and 5, the exhaust mixing pipe 54 is configured by welding an upper pipe body 55 and a lower pipe body 56 that are bent and formed in the same shape. The upper tube body 55 and the lower tube body 56 include left and right side walls 55A, 55B, 56A, and 56B, respectively. Then, the left side wall 55A of the upper side pipe 55 and the left side wall 56A of the lower side pipe 56 are formed, the left side wall 55A of the upper side pipe 55 is the left inner wall of the exhaust mixing pipe 54, and the lower side pipe 56 is provided. The left side wall 56 </ b> A is superposed so that it becomes the left outer wall of the exhaust mixing pipe 54. Further, the right side wall 55B of the upper side pipe 55 and the right side wall 56B of the lower side pipe 56 are formed, the right side wall 55B of the upper side pipe 55 is the right outer wall of the exhaust mixing pipe 54, and the lower side pipe 56 is provided. The right side wall 56B is superposed so that it becomes the right inner wall of the exhaust mixing pipe 54. A character “HOT” is formed on the left side wall 56 </ b> A of the lower tube body 56 by hole machining to indicate that the exhaust mixing tube 54 is a high-temperature part.

  Accordingly, it is possible to prevent the occurrence of inconvenience that the exhaust gas flows out from each character hole 56C of the lower tube body 56 while allowing the high temperature portion to be expressed at a lower cost than the embossing process.

  In addition to the above configuration, for example, in the exhaust mixing pipe 54, only the color of the overlapping surface of the left side wall 55 </ b> A of the upper side pipe 55 with the left side wall 56 </ b> A of the lower side pipe 56 is changed to the color of other parts. By making it different, the character “HOT” for indicating that the exhaust mixing pipe 54 is a high-temperature part may be more easily recognized.

  As shown in FIGS. 2, 3, 6, and 7, the exhaust purification device 18 is provided with a first band member 57 fitted on the front end side that is one end side in the longitudinal direction. Further, a second band member 58 is externally fitted on the rear end side which is the other end side in the longitudinal direction. On the other hand, the engine 7 includes a support frame 60 that supports the exhaust purification device 18 at the upper left portion thereof.

  As shown in FIGS. 6 and 7, the support frame 60 includes a first part 61 connected to the first band member 57, a second part 62 connected to the second band member 58, and a third part connected to the engine 7. The structure is divided into three parts that can be divided into the parts 63. In addition, the first adjustment unit 64 that enables the position adjustment of the first component 61 in the front-rear direction with respect to the engine 7 and the second adjustment unit 65 that allows the position adjustment of the second component 62 with respect to the engine 7 in the front-rear direction. And.

  The first component 61 includes a first member 66 that is vertically connected to be connected to a connected portion 57A that is suspended from the first band member 57 in a front-rear direction, and a second member that is bent in a J-shape. Member 67. The second member 67 is welded to the rear surface on the lower end side of the first member 66 in a J-shape in plan view with the long side located on the left and right center side of the vehicle body. The second member 67 has an end portion 67A on the long side and an end portion 67B on the short side located at a first set distance in the left-right direction, and viewed in the right direction (viewed on the left side of the vehicle body). In order not to overlap with each other, the position is shifted by the second set distance in the front-rear direction. These end portions 67A and 67B are configured to be first connection portions 61A that are detachably bolted to the two first connected portions 63A provided in the third component 63.

  The second component 62 includes a first member 68 that is vertically connected to a connected portion 58A suspended from the second band member 58 in a front-rear direction and is bent in a J-shape. And a member 69. The second member 69 is welded to the front surface on the lower end side of the first member 68 in such a manner that the long side of the first member 68 is positioned in the left-right center side of the vehicle body in a reverse J-shape in plan view. The second member 69 has an end portion 69A on the long side and an end portion 69B on the short side that are separated from each other by a third set distance in the left-right direction, and viewed in the right direction (viewed on the left side of the vehicle body). In order to avoid overlapping, the position is shifted by the fourth set distance in the front-rear direction. The end portions 69A and 69B are configured to be second connection portions 62A that are detachably bolted to the two second connected portions 63B provided in the third component 63.

  The third part 63 is a support formed integrally with a first member 70 made of a vertically-oriented channel steel material with a lower end bolted to the front left side surface of the engine 7 and a flange 52B of the exhaust part 52A in the exhaust manifold 52. A second member 71 made of a front and rear steel plate member that bolts the rear end to the portion 52C, and a front and rear band that bolts the front to the cooling water supply portion 7B provided at the upper front end on the left side of the engine 7 And a third member 72 made of steel. Then, welding is performed in a state where the front end portion of the second member 71 is placed on the upper end of the first member 70, and the rear portion of the third member 72 is welded to the front end portion of the bottom surface of the second member 71. In a state in which 70 to 72 are connected to predetermined positions of the engine 7, the second member 71 is connected to the band members 57 and 58 of the exhaust purification device 18, and the first member 61 and the first member 62 of the second component 62. 66 and 68 are configured to be in a horizontal posture capable of receiving and supporting from below.

  The second member 71 of the third part 63 has the two first connected parts 63A described above that enable bolt connection with the two first connecting parts 61A provided in the first part 61 on the front end side of the upper surface thereof. Is standing. In addition, on the rear end side of the upper surface, the above-described two second connected portions 63B that allow bolt connection with the two second connecting portions 62A provided in the second component 62 are provided upright. The two first connected parts 63A, like the two first connected parts 61A of the first component 61, are separated from each other by a first set distance in the left-right direction, and are viewed in the right direction (viewed from the left side of the vehicle body). ) In the state of being displaced by the second set distance in the front-rear direction so as not to overlap. And the screw part 63C, such as a welding nut, which enables the bolt connection with the first connection part 61A of the first component 61 is provided. The two second connected parts 63B, like the two second connecting parts 62A of the second component 62, are separated from each other by a third set distance in the left-right direction, and viewed in the right direction (viewed from the left side of the vehicle body). ) In the state of being displaced by the fourth set distance in the front-rear direction so as not to overlap. And it has screwing parts 63D, such as a welding nut, which enables bolt connection with the 2nd connection part 62A of the 2nd part 62.

  Each first connecting portion 61A of the first component 61 has a long hole 61B formed long in the front-rear direction along the longitudinal direction of the exhaust gas purification device 18 for bolt connection with the first connected portion 63A of the third component 63. Forming. The long holes 61 </ b> B constitute the first adjusting portion 64 that enables the position adjustment of the first component 61 in the front-rear direction with respect to the engine 7.

  Each of the second connecting portions 62A of the second component 62 has a long hole 62B formed in the longitudinal direction along the longitudinal direction of the exhaust purification device 18 for bolt connection with the second connected portion 63B of the third component 63. Forming. The long holes 62 </ b> B constitute the above-described second adjustment portion 65 that enables the position adjustment of the second component 62 in the front-rear direction with respect to the engine 7.

  The first adjustment part 64 and the second adjustment part 65 have the length in the vertical direction, which is the length in the short direction of each of the long holes 61B, 62B, the first part 61 or the second part 62 and the third part. The first and second parts 61 and 62 can be adjusted in the vertical direction with respect to the engine 7 by making the diameter of the bolt 73 connecting to 63 larger than the bolt diameter.

  In the case of attaching the exhaust purification device 18 to the engine 7 from the above configuration, first, the first component 61 and the second component 62 of the support frame 60 are bolted to the exhaust purification device 18. Further, the third part 63 of the support frame 60 is bolted to the upper left part of the engine 7. Next, the first component 61 and the second component 62 of the support frame 60 connected to the exhaust purification device 18 are mounted on the second member 71 of the third component 63 in a predetermined connection posture with respect to the second member 71. Put. Then, after this mounting, the flange 18C of the exhaust purification device 18 is bolted to the flange 52B of the exhaust manifold 52 in the engine 7, and the first connecting portion 61A of the corresponding first component 61 and the first of the third component 63 are connected. The bolt connection with the connected portion 63A is performed via the first adjusting portion 64 described above, and the bolt between the corresponding second connecting portion 62A of the second component 62 and the second connected portion 63B of the third component 63. The connection is performed via the second adjustment unit 65 described above.

  Thereby, for example, the individual difference regarding the positional relationship between the flange 18C of the intake portion 18A and the connected portions 57A and 58A of the band members 57 and 58 in the exhaust purification device 18 in the front-rear direction and the vertical direction, and the exhaust purification device The front-rear direction of the flange 18C of the exhaust portion 18B and the connected portions 57A and 58A of the band members 57 and 58 in the exhaust purification device 18 is generated when the exhaust purification device 18 is disassembled and reassembled for maintenance of the exhaust member 18. In addition, the exhaust purification device 18 can be fixedly mounted at an appropriate position with respect to the engine 7 regardless of assembly errors related to the positional relationship in the vertical direction. As a result, the intake portion 18A of the exhaust purification device 18 can be installed in the exhaust portion of the engine 7. 7A can be easily and properly connected.

  Also, two first connecting portions 61A in the first component 61, two second connecting portions 62A in the second component 62, two first connected portions 63A in the third component 63, and two in the third component 63. The two second connected parts 63B are displaced in the front-rear direction so as not to overlap each other when viewed in the right direction, so that the first connected part 61A of the corresponding first part 61 and the first connected part of the third part 63 are aligned. The bolt connection between the connecting part 63A and the bolt connection between the corresponding second connecting part 62A of the second part 62 and the second connected part 63B of the third part 63 is connected to the engine 7 by the bolt connection of the third part 63. In addition, the bolt 18 can be connected to the flange 18 </ b> C of the exhaust purification device 18 and the flange 52 </ b> B of the exhaust manifold 52 from the left outer portion of the prime mover 2.

  Further, the third part 63 fixed to the engine 7 includes a screwing part 63C that enables bolt connection to the first part 61 and a screwing part 63D that enables bolt connection to the second part 62. Thus, the bolt connection operation of the first component 61 and the second component 62 with respect to the third component 63 can be easily performed from the left outer portion of the driving unit 2.

  As shown in FIG. 8, the steering frame 11 is equipped with a control unit 74 of the power steering mechanism 33 and a plurality of hydraulic pipes 75 for the control unit 74. Further, a support member 77 is provided for supporting an engine control unit (hereinafter abbreviated as ECU) 76 that controls the operation of the common rail system provided in the engine 7.

  The support member 77 includes a first connecting portion 77A facing left and right, a second connecting portion 77B extending rearward from the left end of the first connecting portion 77A, and a third extending rearward from the right end of the first connecting portion 77A. It is made of a band steel material that is bent so as to have a connecting portion 77C. The first connecting portion 77A is formed with two right and left connecting holes (not shown) that enable bolt connection to the ECU 76 via the vibration isolating rubber 78. Also, two front and rear connection holes (not shown) are formed in the second connection portion 77B to enable bolt connection to the left side plate 79 of the steering frame 11 via a vibration isolating rubber 78. In addition, a single engagement hole that enables the third connection portion 77C to be engaged and connected via the anti-vibration rubber 78 to the engagement pin 81 protruding outward from the right side plate 80 of the steering frame 11. (Not shown).

  Each anti-vibration rubber 78 includes an annular engagement groove (not shown) that fits in a corresponding connection hole or engagement hole of the support member 77. Each of the vibration isolating rubbers 78 can be fixedly held at a predetermined position of the support member 77 by fitting these engagement grooves into the corresponding connecting holes or engagement holes of the support member 77.

  From the above configuration, in a state where the ECU 76 is assembled to the steering frame 11, the ECU 76 supports the left and right vibration isolating rubber 78 on the support member 77 supported by the steering frame 11 via the left anti-vibration rubber 78. It will be supported through. As a result, the ECU 76 can be assembled to the steering frame 11 in a state where vibration standards in the three directions of the front-rear direction, the left-right direction, and the up-down direction are satisfied.

  Further, the second connecting portion 77B of the support member 77 is connected to the left side plate 79 of the steering frame 11 at two points, whereby the third connecting portion 77C of the support member 77 is connected to the right side plate 80 of the steering frame 11 at one point. While adopting, it is possible to prevent the swinging displacement of the support member 77 with the connection point between the steering frame 11 and the right side plate 80 as a fulcrum.

  And compared with the case where the 3rd connection part 77C of the support member 77 is bolt-connected with the right side board 80 of the steering frame 11, the connection of the support member 77 with respect to the steering frame 11 can be made easy.

  As shown in FIGS. 1, 2, and 8, in this tractor, the steering frame 11 is provided with a control unit 74 of the power steering mechanism 33, a plurality of hydraulic pipes 75, and the like inside the steering frame 11. It is no longer possible to deploy the ECU 76 inside the. However, there is a space surrounded by the steering frame 11, the partition wall 9, and the bottom shielding plate 24 of the tank support 23 at the front portion of the steering frame 11.

  Therefore, the ECU 76 is bolt-connected to the front surface side of the support member 77 via a connecting member 82 made of a steel plate material, so that the entirety of the steering frame 11, the partition wall body 9, and the bottom shielding plate 24 of the tank support body 23. It is configured to be located in the space surrounded by.

  As a result, the ECU 76 can be disposed near the engine 7 without the need to change the arrangement of the engine peripheral devices in order to secure the arrangement space for the ECU 76 near the engine 7. The wiring extending over can be shortened. In addition, the space surrounded by the steering frame 11, the partition wall 9, and the bottom shielding plate 24 of the tank support 23 is a heat shielding space for the engine 7 and the exhaust purification device 18. Therefore, a heat insulating member is additionally provided. In addition, it is possible to prevent the heat radiation from the engine 7 and the exhaust purification device 18 from adversely affecting the ECU 76.

  For example, when the power steering mechanism 33 is not provided and only the steering post 34 with a built-in steering shaft is located inside the steering frame 11, as shown in FIG. The whole may be configured to be located inside the steering frame 11 by being bolted to the rear surface side. Further, the support member 77 includes a fourth connection portion 77D that extends downward from the lower end of the second connection portion 77B by shortening the rearward extension length of the second connection portion 77B. A connecting hole (not shown) that enables bolt connection to the left side plate 79 of the steering frame 11 via the vibration isolating rubber 78 may be formed in the connecting portion 77D.

  [Another embodiment]

[1] The configuration of the support frame 60 can be variously modified. For example, the configuration may be configured as follows.

  As shown in FIGS. 10 to 12, the support frame 60 includes a first part 91 connected to a first band member 57 provided on the front end side of the exhaust purification device 18 and a first part provided on the rear end side of the exhaust purification device 18. The second part 92 connected to the two-band member 58 and the third part 93 connected to the engine 7 are divided into three parts. In addition, a first adjustment portion 94 that enables the position adjustment of the first component 91 in the front-rear direction with respect to the engine 7, and a second adjustment portion 95 that allows the position adjustment of the second component 92 in the front-rear direction with respect to the engine 7. And.

  The exhaust purification device 18 is directed toward the first component 91 from the front end side, which is one end in the longitudinal direction of the exhaust purification device 18, by left and right connected portions 57 </ b> A that are suspended from the left and right ends of the lower portion of the first band member 57. The left and right third connected portions 18E extending in this manner are configured.

  The first component 91 is formed by welding a vertically oriented second member 97 in a standing posture to a front end portion of a first member 96 made of a longitudinal steel plate material. A first connecting portion 91 </ b> A that is detachably bolted to the first connected portion 93 </ b> A provided at the upper end portion of the third component 93 is provided on the front end side of the lower surface of the first member 96. In addition, two second connected portions 91B that are detachably bolted to two second connecting portions 92A provided in the second component 92 are erected on the rear end side of the upper surface of the first member 96. . Further, the second member 97 is provided with left and right third connecting portions 91 </ b> C that are bolt-connected in a state where the second member 97 is joined to the corresponding third connected portion 18 </ b> E of the exhaust purification device 18 in the front-rear direction. Still further, the rear end portion of the first member 96 is configured as a connecting portion 91D that is detachably connected to a support portion 52C integrally formed with the flange 52B of the exhaust portion 52A in the exhaust manifold 52 as a connected portion 7C of the engine 7. doing.

  The second component 92 includes a first member 98 that is vertically connected to the connected portion 58A hanging from the second band member 58 in a front-rear direction and is bent in a J-shape. Member 99. Then, the second member 99 is welded to the front surface on the lower end side of the first member 98 in a reverse J-shape in a plan view in which the long side is located on the left and right center side of the vehicle body.

  The third component 93 includes a first member 100 made of an L-shaped steel member that is vertically connected to a lower left side of the front upper left side of the engine 7 and a cooling water supply unit provided at the upper left front end of the engine 7. 7B is provided with a second member 101 made of a front and rear band steel material that bolts the front part. And the 1st to-be-connected part 93A by which the 1st connection part 91A of the 1st component 91 mounted in the upper end of the 1st member 100 is detachably bolt-connected to the upper end part of the 1st member 100 is provided. 93 A of 1st to-be-connected parts are equipped with two screwing parts 93B, such as a welding nut which enables bolt connection with the 1st connection part 91A of the 1st component 91, arranged back and forth.

  In the first component 91, the first connecting portion 91 </ b> A has two long holes formed long in the front-rear direction along the longitudinal direction of the exhaust purification device 18 for bolt connection with the first connected portion 93 </ b> A of the third component 93. 91E is formed side by side. Further, the connecting portion 91D is formed with two long holes 91F that are long in the front-rear direction along the longitudinal direction of the exhaust gas purification device 18 arranged side by side for bolt connection with the connected portion 7C of the engine 7. The long holes 91E and 91F constitute the first adjusting portion 94 described above that enables the position adjustment of the first component 61 in the front-rear direction with respect to the engine 7.

  In the first component 91, the two second connected portions 91 </ b> B include a threaded portion 91 </ b> G such as a welding nut that enables bolt connection with the second connecting portion 92 </ b> A of the second component 92. On the other hand, the second part 92 is connected to the second connected part 91B of the first part 91 at both ends 99A, 99B so that the both ends 99A, 99B of the second member 99 become the second connecting part 92A. A long hole 92 </ b> B that is long in the front-rear direction along the longitudinal direction of the exhaust purification device 18 is formed for bolt connection. These elongated holes 92B constitute the second adjusting portion 95 described above that enables the position adjustment of the second component 92 with respect to the engine 7 in the front-rear direction.

  In the first component 91, each of the left and right third connection portions 91C includes a threaded portion 91H such as a screw hole that enables bolt connection with the corresponding third connected portion 18E of the exhaust purification device 18. On the other hand, each third connected portion 18E of the exhaust emission control device 18 is formed with a connecting hole 18F that enables bolt connection with a corresponding third connecting portion 91C of the first component 91. Each connecting hole 18F has a hole diameter larger than the bolt diameter of the bolt 102 screwed into the screwing portion 91H of the first component 91. And these 3rd adjustment parts 103 which enable position adjustment in the up-and-down direction with respect to engine 7 of each 3rd to-be-connected part 18E in exhaust emission control device 18 by these connecting holes 18F are constituted.

  The exhaust purification device 18 sets the left and right third connected portions 18E in the vertical direction so as not to overlap each other in a rightward direction (left side view of the vehicle body) at a position separated by a first set distance in the horizontal direction. It is deployed with its position shifted by the distance. Due to the vertical displacement, the left third connected portion 18E is positioned above the lowermost edge of the exhaust purification device 18, and the right third connected portion 18E is connected to the exhaust purification device 18. It is configured to be located below the lowermost edge. The second part 92 has a fourth set distance in the front-rear direction so that the two second connecting portions 92A are not overlapped at a position separated by a third set distance in the left-right direction when viewed in the right direction (viewed from the left side of the vehicle body). It is deployed in a state where only the position is shifted. As in the case of the left and right third connected portions 18E of the exhaust emission control device 18, the first component 91 has two third connecting portions 91C as viewed in the right direction (the vehicle body). (Left side view of FIG. 4) is arranged in a state of being displaced by the second set distance in the vertical direction so as not to overlap. In the state where the exhaust purification device 18 is connected due to this vertical displacement, the left third connection portion 91C is positioned above the lowermost edge of the exhaust purification device 18, and the right third connection portion. The part 91 </ b> C is configured to be positioned below the lowermost edge of the exhaust purification device 18. Similarly to the two second connecting portions 92A of the second component 92, the two second connected portions 91B are placed at positions separated by a third set distance in the left-right direction (viewed from the left side of the vehicle body). ) In a state of being displaced by the fourth set distance in the front-rear direction so as not to overlap.

  The second adjusting portion 95 has a length in the vertical direction, which is the length in the short direction of each of the long holes 92 </ b> B, larger than the bolt diameter of the bolt 104 that connects the first component 91 and the second component 92. Thus, the position of the second component 92 in the vertical direction with respect to the engine 7 can be adjusted.

  When the exhaust purification device 18 is attached to the engine 7 from the above configuration, first, the second component 92 of the support frame 60 is bolted to the exhaust purification device 18. Further, the third part 93 of the support frame 60 is bolted to the upper left part of the engine 7. Next, the bolt connection in the temporarily fixed state of the exhaust emission control device 18 to the first component 61 of the support frame 60 is performed via the third adjusting unit 103 described above. Further, the bolt connection in the temporarily fixed state of the second component 92 with respect to the first component 61 is performed via the second adjusting portion 95 described above. Thereafter, the first component 61 temporarily fixed to the exhaust purification device 18 and the second component 92 is placed over the coupled portion 7C of the engine 7 and the third component 93, and in this mounted state, the coupled component of the engine 7 is placed. The bolt 7 is connected to the portion 7C and the third component 93 in a temporarily fixed state via the first adjusting portion 94 described above. After the temporary fixing, the flange 18C of the exhaust gas purification device 18 is bolted to the flange 52B of the exhaust manifold 52 while adjusting the position at each of the adjusting portions 94, 95, 103, and each temporary fixing point is finally tightened. To do.

  Thereby, for example, the individual difference regarding the positional relationship between the flange 18C of the intake portion 18A and the connected portions 57A and 58A of the band members 57 and 58 in the exhaust purification device 18 in the front-rear direction and the vertical direction, and the exhaust purification device The front-rear direction of the flange 18C of the exhaust portion 18B and the connected portions 57A and 58A of the band members 57 and 58 in the exhaust purification device 18 is generated when the exhaust purification device 18 is disassembled and reassembled for maintenance of the exhaust member 18. In addition, the exhaust purification device 18 can be fixedly mounted at an appropriate position with respect to the engine 7 regardless of assembly errors related to the positional relationship in the vertical direction. As a result, the intake portion 18A of the exhaust purification device 18 can be installed in the exhaust portion of the engine 7. 7A can be easily and properly connected.

  Further, the left and right third connected portions 18E in the exhaust purification device 18 and the left and right third connected portions 91C in the first component 91 are shifted in the vertical direction so as not to overlap each other when viewed in the right direction. In addition, the two second connected portions 91B in the first component 91 and the two second connected portions 92A in the second component 92 do not overlap each other when viewed in the right direction. By shifting the position in the front-rear direction, the bolt connection between the third connected portion 18E of the corresponding exhaust purification device 18 and the third connection portion 91C of the first component 91 and the second of the corresponding first component 91 are performed. The bolt connection between the connected portion 91 </ b> B and the second connection portion 92 </ b> A of the second component 92, the connection portion 91 </ b> D of the first component 91 and the bolt connection of the third component 93 to the engine 7, and the flange of the exhaust purification device 18. 8C and with bolt connection between the flange 52B of the exhaust manifold 52 can be performed from the left outside portion of the driving portion 2.

  Further, the third part 93 fixed to the engine 7 is provided with a threaded portion 93B that enables bolt connection with the first part 91, and the first part 91 fixed to the engine 7 and the third part 93 is By including the screwing portion 91G that enables the bolt connection with the second component 92, the bolt connection operation of the first component 91 with respect to the third component 93 and the bolt connection operation of the second component 92 with respect to the first component 91 are performed. Becomes easier to perform from the left outer portion of the prime mover 2.

[2] In the support frame 60 illustrated in the above embodiment, at least one of the first component 61 and the second component 62 is formed in an L shape when the exhaust purification device 18 is viewed in the short direction, and Long holes 61B and 62B that are long in the direction along the longitudinal direction of the exhaust gas purification device 18 are formed in the bottom part that is joined to the three parts 63, and the first adjusting part 64 or the second adjusting part 65 is formed by these long holes 61B and 62B. You may comprise so that it may comprise.

  Also in this configuration, each of the first adjusting portion 64 and the second adjusting portion 65 is configured such that the lengths of the long holes 61B and 62B in the short direction are larger than the bolt diameter. 61 or position adjustment of the second part 62 in the short direction of the long holes 61B and 62B with respect to the engine 7 (direction different from the short direction of the long holes 61B and 62B in the support frame 60 illustrated in the above embodiment) May be possible.

[3] In the support frame 60 exemplified in the above embodiment, a long slot 61B is formed in the first coupled portion 63A in the direction along the longitudinal direction of the exhaust purification device 18, and the first hole 61B is used to form the first hole 61B. The adjustment unit 64 may be configured. Further, long elongated holes 61B are formed in both the first connecting portion 61A and the first connected portion 63A in the direction along the longitudinal direction of the exhaust gas purification device 18, and the first adjusting portion 64 is formed by these elongated holes 61B. It may be configured.

[4] In the support frame 60 exemplified in the above embodiment, a long hole 62B is formed in the second connected portion 63B in the direction along the longitudinal direction of the exhaust purification device 18, and the second hole 62B is used to form the second hole 62B. The adjustment unit 65 may be configured. In addition, long holes 62B are formed in both the second connecting part 62A and the second connected part 63B in the direction along the longitudinal direction of the exhaust purification device 18, and the second adjusting part 65 is formed by these long holes 62B. It may be configured.

[5] In the support frame 60 illustrated in the other embodiment [1], the long holes 91 </ b> E and 91 </ b> F long in the direction along the longitudinal direction of the exhaust purification device 18 are provided in the coupled portion 7 </ b> C and the first coupled portion 93 </ b> A. And the first adjusting portion 94 may be constituted by the long holes 91E and 91F. In addition, long holes 91E and 91F that are long in the direction along the longitudinal direction of the exhaust purification device 18 are formed in each of the connecting portion 91D and the first connecting portion 91A, the connected portion 7C, and the first connected portion 93A. The first adjustment portion 94 may be configured by the long holes 91E and 91F.

[6] In the support frame 60 exemplified in the other embodiment [1], a long hole 92B is formed in the second connected portion 91B in the direction along the longitudinal direction of the exhaust purification device 18, and this long hole is formed. The second adjustment unit 95 may be configured by 92B. In addition, long holes 92B that are long in the direction along the longitudinal direction of the exhaust gas purification device 18 are formed in both the second connecting part 92A and the second connected part 91B, and the second adjusting part 95 is formed by these long holes 92B. It may be configured.

[7] In the support frame 60 exemplified in the other embodiment [1], the length of the third connecting portion 91C in the same direction as the short direction of the long hole 92B in the second adjusting portion 95 is larger than the bolt diameter. The third adjusting portion 103 that allows the position adjustment of the long hole 92B in the short direction of the third connected portion 18E with respect to the engine 7 to be formed by the connecting hole 18F is also formed. Good. In addition, a connecting hole 18F having a length in the same direction as the short direction of the long hole 92B in the second adjusting portion 95 larger than the bolt diameter is formed in both the third connecting portion 91C and the third connected portion 18E. The third adjusting portion 103 that enables the position adjustment of the long hole 92B of the third connected portion 18E with respect to the engine 7 in the short direction may be configured by these connecting holes 18F.

[8] A screw hole, a welding nut, a welding bolt, or the like can be adopted as each screwed portion 63C, 63D, 91G, 91H, 93B of the support frame 60.

[9] The engine 7 may be, for example, a horizontal diesel engine.

[10] The exhaust purification device 18 may be configured, for example, such that the shape of the longitudinal view is oval.

[11] For example, the exhaust purification device 18 may be equipped in a lateral orientation in which the longitudinal direction thereof is along the left-right direction of the vehicle body. Moreover, you may equip with the inclination attitude | position which the longitudinal direction inclined in the left-right direction with respect to the front-back direction of a vehicle body.

  The present invention provides a tractor, a riding mower, a riding rice transplanter, a backhoe, or an engine having an exhaust section, an exhaust purification apparatus having an intake section connected to the exhaust section, and a support frame that supports the exhaust purification apparatus. It can be applied to work vehicles such as transport vehicles.

7 Engine 7A Exhaust part 7C Connected part 18 Exhaust purification device 18A Intake part 18E Third connected part 18F Connection hole
57 First band member
58 second band member 60 support frame 61 first part 61A first connecting part 61B long hole 62 second part 62A second connecting part 62B long hole 63 third part 63A first connected part 63B second connected part 63C screw Joint part 63D Screw part 64 First adjustment part 65 Second adjustment part 91 First part 91A First connection part 91B Second connected part 91C Third connection part 91D connection part 91E long hole 91F long hole 91G screw part 92 2nd part 92A 2nd connection part 92B long hole 93 3rd part 93A 1st to-be-connected part 93B screwing part 94 1st adjustment part 95 2nd adjustment part 103 3rd adjustment part

Claims (7)

An engine having an exhaust portion, an exhaust purification device having an intake portion connected to the exhaust portion, and a support frame supporting the exhaust purification device,
The support frame is externally fitted on the first part connected to the first band member fitted on one end in the longitudinal direction of the exhaust purification device, and on the other end side in the longitudinal direction on the exhaust purification device . The engine of the first part configured to be divided into a third part that can be divided into a second part that is connected to the second band member and a third part that is connected to the engine, and is connected to the first band member A first adjuster for adjusting the position of the exhaust purification device in the longitudinal direction relative to the engine; and a position adjustment of the second component connected to the second band member in the longitudinal direction of the exhaust purification device relative to the engine A work vehicle including a second adjustment unit that enables the control. The first part includes a first connecting part that is detachably bolted to a first connected part provided in the third part,
The second component includes a second connecting portion that is detachably bolted to a second connected portion provided in the third component,
The first adjusting portion is configured by a long hole formed in at least one of the first connecting portion and the first connected portion long in a direction along the longitudinal direction of the exhaust purification device,
The said 2nd adjustment part is comprised by the long hole formed long in the direction in alignment with the longitudinal direction of the said exhaust gas purification apparatus at least in any one of a said 2nd connection part and a said 2nd to-be-connected part. The work vehicle according to 1.   Each of the first adjustment portion and the second adjustment portion has a length in a short direction of the long hole larger than a bolt diameter, and the length of the first component or the second component with respect to the engine is increased. The work vehicle according to claim 2, wherein the position of the hole can be adjusted in the short direction. The first component is configured so that the two first connecting portions are not exhausted so as not to overlap with each other in a short direction of the exhaust purification device at a first set distance in a short direction. Deployed in the longitudinal direction of the purification device in a state shifted by the second set distance,
The second part is the same as the case of the first connecting part in the short direction, with the two second connecting parts being separated by a third set distance in the short direction of the exhaust gas purification apparatus. Deployed in a state shifted by a fourth set distance in the longitudinal direction of the exhaust emission control device so as not to overlap in a direction view,
The third component is configured such that the two first connected parts are arranged at positions that are separated from each other by the first set distance in the short direction of the exhaust gas purification device, similarly to the two first connecting parts. The exhaust gas purification device is disposed in a state of being displaced by the second set distance in the longitudinal direction of the exhaust gas purification device so as not to overlap in a unidirectional view. As in the case of the two connecting portions, the exhaust purification device is arranged in the longitudinal direction of the exhaust purification device so as not to overlap in the short direction of the exhaust purification device by a third set distance so as not to overlap in the short direction. Deployed with the fourth set distance shifted.
The elongated holes are formed in each of the two first connecting portions and the two second connecting portions, and screwed portions are respectively connected to the two first connected portions and the two second connected portions. The work vehicle according to claim 2, further comprising: The first part includes a connecting part that is detachably bolted to a connected part provided in the engine, and a first connecting part that is detachably bolted to a first connected part provided to the third part. Prepared,
The second component includes a second connecting portion that is detachably bolted to a second connected portion provided in the first component,
The first adjusting portion is formed at least in one of the connecting portion, the first connecting portion, the connected portion, and the first connected portion in a direction along the longitudinal direction of the exhaust emission control device. Consists of long holes,
The said 2nd adjustment part is comprised by the long hole formed long in the direction in alignment with the longitudinal direction of the said exhaust gas purification apparatus at least in any one of a said 2nd connection part and a said 2nd to-be-connected part. The work vehicle according to 1. The second adjusting portion is configured such that the length of the long hole in the short direction is larger than the bolt diameter, and the position of the second part in the short direction of the long hole with respect to the engine can be adjusted.
The first component includes a third coupling portion that is bolt-coupled to a third coupled portion that extends from one end side in the longitudinal direction of the exhaust gas purification device toward the first component,
At least one of the third connecting portion and the third connected portion is formed with a connecting hole having a length in the same direction as the short direction of the long hole in the second adjusting portion larger than the bolt diameter. The work vehicle according to claim 5, wherein the connection hole constitutes a third adjustment portion that enables position adjustment of the third hole to the engine in the short direction with respect to the engine. The exhaust purification device is configured so that the two third connected portions do not overlap with each other in a short direction of the exhaust purification device by a first set distance so as not to overlap in the short direction. Deployed with the second set distance shifted in the short direction perpendicular to the short direction,
The second part is the same as the case of the first connecting part in the short direction, with the two second connecting parts being separated by a third set distance in the short direction of the exhaust gas purification apparatus. Deployed in a state shifted by a fourth set distance in the longitudinal direction of the exhaust emission control device so as not to overlap in a direction view,
The first component is configured such that the two third connecting portions are disposed at positions that are separated by the first set distance in the short direction of the exhaust emission control device, similarly to the two third connected portions. In a state where the second set distance is shifted in the short direction perpendicular to the short direction so as not to overlap in one direction in the direction, and the two second connected parts, Similarly to the two second connecting portions, the exhaust purification device is disposed at a position separated by the third set distance in the short direction of the exhaust purification device so as not to overlap when viewed in one direction in the short direction. Deploy in a state that is displaced by the fourth set distance in the longitudinal direction,
The elongated hole is formed in each of the first connecting part and the two second connecting parts, and a screwing part is provided in each of the first connected part and the two second connected parts. The work vehicle according to claim 6.

Images