KR102568127B1 - Combine - Google Patents

Abstract

The exhaust gas treatment device is disposed in a state in which there are no disadvantages such as restrictions on the arrangement of other devices and a large amount of rice straw debris being accumulated on the upper outer surface.
While located on the front side of the machine, the engine 34 is provided with a motor unit 8, a motor unit 8 located on the rear side, and a grain tank 6 for storing the grain after threshing, and the engine 34 Equipped with an exhaust gas treatment device 58 that purifies the exhaust gas of, and the exhaust gas treatment device 58 is below the grain tank 6, in a state overlapping with the grain tank 6 in plan view , The heat shield cover 76, which is disposed in a vertical posture along the vertical direction of the body and blocks heat from the exhaust gas treatment device 58 between the grain tank 6 and the exhaust gas treatment device 58, are equipped

Description

Combine {COMBINE}

The present invention relates to a combine, and more particularly, to a combine equipped with an exhaust gas treatment device that purifies engine exhaust gas.

In a conventional combine, for example, there are those equipped with an exhaust gas treatment device for reducing particulate matter, nitrogen oxides, etc. contained in the exhaust gas of the engine, and the exhaust gas treatment device is a threshing device arranged in parallel in the body transverse direction In the left-right intermediate position of the grain tank, there was one supported by the body frame in a posture along the longitudinal direction of the body (see Patent Document 1, for example).

Japanese Unexamined Patent Publication No. 2014-193120

In the conventional configuration described above, since the exhaust gas processing device is disposed on the body in a posture along the longitudinal direction of the body, a large installation space is required on the body frame in plan view, and the upper side of the exhaust gas processing device is required. The outer surface of has a large area.

As a result, since a large installation space is required on the body frame in plan view, there is a disadvantage in that the arrangement of other devices installed on the body frame is restricted. In addition, since the outer surface on the upper side of the exhaust gas treatment device has a large area, a large amount of dust such as rice straw shavings generated during the harvesting operation is deposited on the outer surface on the upper side of the exhaust gas treatment device. There is also the disadvantage of increasing the risk of being adversely affected by

Therefore, it has been desired to dispose the exhaust gas treatment device in a state where there are no disadvantages such as restrictions on the arrangement of other devices and a large amount of rice straw debris being accumulated on the outer surface on the upper side.

The characteristic configuration of the combine according to the present invention is,

A driving unit located on the front side of the body and equipped with an engine, a grain tank located on the rear side of the driving unit and storing grains after threshing with a threshing device, and an exhaust gas that purifies the exhaust gas of the engine. Equipped with a processing device;

The exhaust gas processing device is disposed below the grain tank, in a state in which the grain tank overlaps with the grain tank in plan view, in a vertical posture in which the longitudinal direction follows the vertical direction of the body,

It lies in the point provided with the heat shield cover which cuts|blocks the heat of the said exhaust gas processing apparatus, between the said grain tank and the said exhaust gas processing apparatus.

According to the present invention, since the exhaust gas treatment device is disposed in a vertical position in which the longitudinal direction is along the vertical direction of the aircraft, the installation space is reduced in plan view, and there is a concern that the arrangement of other devices installed on the aircraft frame may be restricted. is less

Since the exhaust gas treatment device is located in a state overlapping with the grain tank in plan view, the upper side of the exhaust gas treatment device is in a state covered by the grain tank. As a result, even if dust such as rice straw crumbs scatters along with the harvesting work, there is little possibility that the dust will accumulate on the upper outer surface of the exhaust gas treatment device.

Although the exhaust gas treatment device overlaps with the grain tank in plan view, in order to increase the grain storage amount of the grain tank, it is necessary to bring the grain tank and the exhaust gas treatment device close to each other in the vertical direction. By the way, in this configuration, since a heat shield cover is provided between the grain tank and the exhaust gas treatment device, it is possible to prevent heat generated from the exhaust gas treatment device from being transferred to the grains stored in the grain tank.

Therefore, exhaust gas treatment in a state where there are no disadvantages such as restrictions on the arrangement of other devices or accumulation of a large amount of rice straw debris on the outer surface of the upper side while preventing adverse effects of heat on the grains stored in the grain tank It became possible to place the device.

In the present invention, the exhaust gas treatment device is disposed in a state entering the lower part of the threshing device side of the front body of the grain tank, and the heat shield cover is located around the exhaust gas treatment device, at an upper part, It is suitable if it covers the location corresponding to the opposite side to a threshing device, and the location corresponding to each of the rear side location.

According to this configuration, since the exhaust gas treatment device is disposed in a state entering the lower part of the threshing device side of the front body side of the grain tank, the exhaust gas treatment device is provided at a location close to the engine mounted below the driving unit of the front body portion. can do. In this way, since the exhaust gas treatment device can be provided at a location close to the engine, the exhaust gas passage path is shortened, and the risk of being adversely affected by dust is reduced.

Since the exhaust gas treatment device is disposed in a state where it enters the lower side of the threshing device side of the front body of the grain tank, the heat shield cover is located around the exhaust gas treatment device, on the upper side, corresponding to the side opposite to the threshing device. By covering the location and the location corresponding to each of the rear portion side locations, the heat shield cover can cover the location facing the grain tank satisfactorily.

Therefore, a heat shield cover can prevent that the heat generated from an exhaust gas processing apparatus is transmitted to the grain stored in a grain tank by covering the location which opposes a grain tank.

In the present invention, the grain tank, while being formed in a shape that narrows downward when viewed from the front, a concave inlet portion that is concave toward the inside of the tank is formed on the front side of the body of the inclined surface portion of the shape that becomes narrower toward the bottom , The concave portion is located along the vertical direction and on the inner side vertical surface of the posture along the front-back direction, the rear side vertical surface of the posture along the vertical direction and along the left-right direction, and each surface of the upper side located on the upper side. surrounded by

The exhaust gas treatment device is disposed in a state entering the concave portion,

It is suitable for the heat shield cover to cover and shield a location facing each of the inner side vertical surface, the rear side vertical surface, and the upper side surface in the concave portion of the grain tank.

According to this structure, in order for a grain tank to flow down and guide a harvested product toward conveying apparatuses, such as a conveying screw provided in the lower end, the inclined surface part of the shape narrowing toward the bottom is formed. And, a concave inlet for entering the exhaust gas treatment device is formed in this inclined surface portion. That is, it is possible to arrange the exhaust gas treatment device in a state in which it enters the concave portion, using the space on the lower side of the inclined surface portion that has been inclined in advance to guide the grains down. The exhaust gas treatment device can be compactly arranged without expanding the installation space in a plan view.

The concave inlet is surrounded by each side of the medial longitudinal plane in the vertical orientation and the anterior-posterior orientation, the rear-side longitudinal plane in the longitudinal orientation and the left-right orientation, and each surface of the upper side located on the upper side. all. And the heat shield cover covers the location facing each of the inner side vertical surface, the rear side vertical surface, and the upper side surface in the recessed part of the grain tank, and shields it from heat.

Therefore, by using the space existing below the inclined surface portion, the exhaust gas treatment device can be disposed without expanding the installation space in a planar view while reducing the capacity of the grain tank as little as possible.

In the present invention,

The upper side surface in the concave portion is installed in an inclined attitude toward a higher position toward the threshing device side,

It is preferable if the upper surface of the said heat shield cover is installed in the inclined posture along the said upper side surface in the said concave part.

According to this structure, the upper side surface of the concave part for which the exhaust gas processing apparatus in a grain tank enters is installed in the inclined attitude which becomes a high position toward the outside of a threshing apparatus, ie, a tank. That is, the upper side surface can flow down the harvested product toward the conveying device, similarly to the sloped portion of the shape that becomes narrower toward the bottom.

The upper surface of the heat shield cover is installed in an inclined posture along the upper surface of the grain tank. A space is formed between the upper surface of the inclined posture and the exhaust gas treatment device. By forming this space, the heat generated from the exhaust gas treatment device is prevented from being filled and is easily dissipated. In addition, since the upper surface of the heat shield cover is in an inclined posture, it is possible to prevent dust from accumulating on the upper side of the upper surface of the heat shield cover.

In the present invention,

A portion on the side of the body facing the threshing device in the periphery of the exhaust gas processing device is in an open state without being covered with the heat shield cover, and this open portion is viewed from the side with the intake port of the sorting wind in the threshing device. It is suitable if it is duplicated.

According to this configuration, while being open, the part on the side of the body facing the threshing device in the periphery of the exhaust gas treatment device is overlapped with the intake port of the sorting wind when viewed from the side. When the threshing device operates and air is sucked in from the intake port, the high-temperature air around the exhaust gas treatment device is also sucked in as well. The air taken in from the inlet is supplied as a sorting wind in the threshing device, and is discharged to the outside of the machine together with the selected rice straw shavings.

Therefore, by using the air intake structure of the separated wind, it is possible to suck in and discharge the high-temperature air around the exhaust gas treatment device to the outside, and it is possible to suppress the temperature rise around the exhaust gas treatment device.

In the present invention,

It is preferable if a ventilation part is formed in the side surface on the side opposite to the said threshing apparatus side in the said heat shield cover.

According to this configuration, when the high-temperature air around the exhaust gas treatment device is sucked using the intake configuration of the sorting wind in the threshing device, through the ventilation portion formed on the side surface of the heat shield cover opposite to the threshing device side, Outside air is drawn toward the periphery of the exhaust gas treatment device.

When the engine is operating while the threshing device is not operating, the high-temperature air around the exhaust gas treatment device is not sucked in through the intake port, but the high-temperature air around the exhaust gas treatment device is blown through the ventilation port. can be discharged to the outside. As a result, the high-temperature air in the narrow space between the heat shield cover and the periphery of the exhaust gas treatment device is not filled, and the heat dissipation effect can be exhibited.

Therefore, when the threshing device is operating, not only can the high-temperature air around the exhaust gas processing device be sucked in and discharged to the outside, but also the low-temperature outside air can be supplied around the exhaust gas processing device, thereby improving the efficiency of the exhaust gas processing device. When the temperature rise of the surroundings can be further suppressed and the threshing device is not operating, it is possible to prevent heat from being filled up and exhibit a heat dissipation effect.

In the present invention,

It is preferable that a location on the front side of the body facing the motor unit in the periphery of the exhaust gas processing device is left open without being covered with the heat shield cover.

According to this configuration, the location on the front side of the body facing the motor unit in the periphery of the exhaust gas treatment device is open, and since the periphery of the exhaust gas treatment device and the motor unit are in a state of communicating, the exhaust gas treatment device is removed from the engine. It is easy to place an exhaust pipe through which the exhaust gas flows toward. Further, since the motor unit includes an engine and is expected to become high in temperature due to heat generated by the engine, there is no need to shield the exhaust gas processing device from the surroundings.

1 is an overall side view of a combine.
Figure 2 is an overall plan view of the combine.
3 is a transverse plan view of the front part of the combine.
Fig. 4 is a longitudinal rear view showing the positional relationship between a threshing device and an exhaust pipe.
5 is a right side view of the front part of the combine;
6 is a left side view of a motor unit;
Fig. 7 is a longitudinal side view showing a rotation support structure;
Figure 8 is a rear view of the grain tank.
9 is a plan view of the grain tank.
Figure 10 is a perspective view of the grain tank.
Figure 11 is a perspective view of the grain tank.
12 is a longitudinal front view of an exhaust pipe;
13 is a perspective view of a heat shield cover;
Fig. 14 is a transverse plan view of a heat shield cover;

EMBODIMENT OF THE INVENTION Hereinafter, the case where embodiment of this invention is applied to a cutting-off type combine is demonstrated based on drawing.

[Overall configuration]

As shown in FIGS. 1 and 2, the combine according to the present invention has a pair of left and right crawler traveling devices 1, a reaping unit for reaping planting grain stems at the front of the traveling body frequently by reference numeral 1 ( 2) is provided. A threshing device 5 having a driver 4 covered by a cabin 3 on the right side of the front of the traveling body and threshing the stem harvested by the reaping unit 2 at the rear of the traveling body. And, the grain tank 6 which stores the grain obtained by the threshing process is provided in the state arranged in the horizontal direction. In a state located below the driver's seat 7 in the driving unit 4 of the traveling body, the driving unit 8 is provided, and the unloader 9 discharges the grains stored in the grain tank 6 to the outside of the body. ) is provided.

In this embodiment, when defining the forward and backward direction of the aircraft, the movement direction of the aircraft in the working state is defined, and when the left and right directions of the aircraft are defined, the left and right are defined as seen from the movement direction of the aircraft. That is, the direction indicated by the symbol (F) in FIGS. 1 and 2 is the body forward side, and the direction indicated by the symbol (B) in FIGS. 1 and 2 is the body rear side. The direction indicated by the symbol L in FIG. 2 is the left side of the body, and the direction indicated by the symbol R in FIG. 2 is the right side of the body.

The reaping unit 2 includes a weeding tool 10 for dividing and guiding the root of the planted grain stem to be harvested, a plurality of erecting devices 11 for erecting the planted grain stem in a vertical position, and the root of the planted grain stem raised. It is provided with a barricade-type reaping device 12 that cuts, a lengthwise conveying device 13 that feeds the harvested stems to the threshing device 5 by conveying them backward while changing the attitude so that they gradually fall horizontally from the vertical attitude.

The threshing device 5 feeds the tip side of the ears to the class chamber 14 for threshing, while holding the base side of the supplied harvested grain stem between the threshing feed chain 5a and the clamping rail 5b and conveying it in the rearward direction of the body. deal with The class chamber 14 is formed by being partitioned by each of the horizontal side walls 15 on both left and right sides of the threshing device 5, the top plate 16, the front wall 17, and the rear wall 18. Inside the class chamber 14, a barrel 19 rotatably supported across the front wall 17 and the rear wall 18 and rotationally driven around the front and rear shaft center, in the forward and backward direction along the outer circumference on the lower side thereof Seen from above, it is provided with arc-shaped nets 20 (see Fig. 4) and the like, and by the barrel 19 and the water nets 20, the tip side of the harvested grain is skimmed to perform a threshing process.

The processed material after the threshing process is sorted into grains and rice straw crumbs in the sorting unit 21 below. Grain is lifted by the grain conveyor 22 and conveyed to the inside of the grain tank 6, after being carried out to the outside of the right side of the threshing apparatus 5 by the processing object conveyance screw of No. 1 not shown. The grain tank 6 stores the grain sent from the threshing device 5. Then, the grain stored in the grain tank 6 is carried out to the outside by the unloader 9.

As shown in FIG. 4, the sorting unit 21 performs specific gravity difference sorting while rocking and transporting the threshing treated material by a rocking sorting device (not shown), and removes rice straw shavings and the like by the sorting wind generated from the tuyere 23. It blows off and is discharged to the outside from an exhaust outlet (not shown) formed at the rear end of the body of the threshing device 5. The tuyere 23 is installed at a lower position on the body front side of the threshing device 5. The tuyere 23 is equipped with a plurality of blade bodies 25 rotatably integrally on the outer periphery of a drive shaft 24 extending along the left-right direction of the aircraft. As shown in FIG. 4 and FIG. 5, the inlet port 26 is formed in the horizontal side wall 15 of the left and right both sides of the threshing apparatus 5 of the location provided with the tuyere 23. In the tuyere 23, the driving shaft 24 is driven to rotate and the blade body 25 rotates to suck in outside air from the left and right inlets 26 and directs the sucked air toward the sorting unit 21 for sorting wind. blowing as

In the threshing device 5, the ceiling plate 16 and the barrel 19 are integrally opened upward, and maintenance such as work to remove clogged grain stems attached to the water net 20, inspection and repair after work is finished, etc. The work can be done easily.

As shown in Figs. 2 and 4, an upper structure 27 provided with a front wall 17, a rear wall 18, a barrel 19, a top plate 16, etc. in the class chamber 14 Through the support arm 28 integrally, it is supported by the lower frame body 29 rotatably around the front and rear axis X located on the right side of the body (the grain tank side). A hydraulic cylinder 30 is installed across the upper structure 27 and the lower frame body 29 . By extending and retracting this hydraulic cylinder 30, the upper structure 27 approaches the lower frame body 29 and moves up and down from the closed position where the top plate 16 is closed, so that the top plate 16, the barrel 19, etc. It is provided so that swing opening/closing is possible in this opened maintenance open position (position shown by the virtual line in FIG. 4).

[Opening/closing structure around the driving part]

As shown in FIG. 3 , the driver 4 has a driver's seat 7, a front panel 31 located in front of the driver's seat 7, and between the front panel 31 and the driver's seat 7. A bottom portion 32 located, a side panel 33 located inside (left side) in the left-right direction of the machine relative to the driver's seat 7, and the like are provided. The driving unit 4 is covered with a cabin 3 on its upper side. The driver's seat 7 is supported on the upper part of the engine bonnet 35 covering the upper part of the diesel type engine 34 provided in the motor unit 8.

As shown in FIG. 5, the engine bonnet 35 includes a front plate portion 35a located on the front side of the engine 34, an upper surface portion 35b located on the upper side of the body of the engine 34, and an upper surface portion. An engine room is formed by providing an air supply chamber configuration portion 35c and the like formed behind the driver's seat 7 in a state connected to the rear of 35b.

2 and 3, the engine bonnet 35, the front panel 31, the side panel 33, the bottom part 32, the driver's seat 7, the cabin 3, etc. are integrally formed. The drive unit structure 36 is formed by being connected. As shown in FIGS. 2 and 5 to 7 , the driver structure 36 is supported by the body frame 37 so as to be rotatable around the vertical axis Y1 on the rear left side of the driver's seat 7 .

Next, the rotation support structure of the driving unit structure 36 will be described in detail.

As shown in FIGS. 3 and 5 to 7 , a tubular support member 38 is erected from the body frame 37 at a location on the rear left side of the driving unit 4 . On the other hand, a rotation fulcrum member 40 extending in the vertical direction is integrally connected to a left side portion of the rear surface of the driving unit structure 36 through an arm portion 39 . The rotation fulcrum member 40 is inserted into the supporting member 38 from above, and is rotatably supported around the vertical axis Y1. Therefore, the driving unit structure 36 is configured to be able to switch posture between a retracted posture positioned inside the body and a protruding posture projected outward to the outside of the body.

If explanation is added, as shown in FIG. 7, the support member 38 is equipped with the inner cylinder member 41 located radially inner side, and the outer cylinder member 42 located radially outer side. The inner cylinder member 41 is located on the lower side and the outer cylinder member 42 is located on the upper side, and the inner cylinder member 41 and the outer cylinder member 42 are connected by bolts 43 in a partially fitted state. In a state where the lower portion of the inner cylinder member 41 is externally fitted to the fixing pin 44 welded and fixed to the body frame 37, the flange portion 45 integrally formed at the lower end is bolted to the body frame 37. By connecting, the inner cylinder member 41 is fixed to the body frame 37. The vertical length of the outer cylinder member 42 is longer than the vertical length of the inner cylinder member 41 .

Inside the supporting member 38, there is provided a bearing portion 46 for receiving and supporting the rotation fulcrum member 40 rotatably while regulating the position in the axial direction. That is, as shown in FIG. 7 , inside the support member 38 , the reduced diameter portion 47 is formed by the upper end of the inner cylinder member 41 . The inner diameter at a location lower than the reduced diameter portion 47 is smaller than the inner diameter at a location higher than the reduced diameter portion 47 .

As shown in FIG. 7, a bush 48 for sliding guidance is provided on the inner periphery of the reduced diameter portion 47. And, at the lower end of the rotation fulcrum member 40, a rotary shaft portion 49 having a smaller diameter than the outer diameter of the rotation fulcrum member 40 is provided in a state in which it protrudes downward. The lower end of the rotation support point member 40 is supported by the upper end surface of the inner cylinder member 41, and the rotation shaft portion 49 is fitted into the bush 48 provided on the inner circumference of the diameter reduction portion 47, , It is supported by the support member 38 so as to be rotatable around the vertical axis Y1. The rotation shaft portion formed at the lower end of the rotation fulcrum member 40 is fitted into the bush 48, the lower end surface of the rotation fulcrum member 40 is supported in contact with the upper end surface 41a of the inner cylinder member 41, and the rotation fulcrum The member 40 is rotatably supported by the inner barrel member 41 .

Therefore, while the upper end of the inner cylinder member 41 functions as a bearing part 46, the sliding portion 53 is provided between the rotary shaft portion 49 and the bush 48 provided on the inner circumferential portion of the reduced diameter portion 47. ) is composed of Moreover, the upper end part of the rotation fulcrum member 40 is rotatably supported around the vertical axis Y1 by the bracket 50 connected to the horizontal side wall 15 of the threshing apparatus 5.

The inner cylinder member 41 and the outer cylinder member 42 are connected with bolts along the radial direction at a plurality of places spaced apart in the circumferential direction at a location where they are fitted. In the state where this bolt connection is released, the inner cylinder member 41 and the outer cylinder member 42 can be separated. When the connection between the inner cylinder member 41 and the outer cylinder member 42 is released and the outer cylinder member 42 is removed from the inner cylinder member 41, the upper end of the inner cylinder member 41 is left open to the outside. In this way, in a state where the upper end of the inner cylinder member 41 is open to the outside, the bush 48 can be easily replaced.

With the above configuration, the driving unit structure 36 is rotatably supported by the supporting member 38 around the vertical axis Y1 via the rotation fulcrum member 40 . Then, the driving unit structure 36 having the engine bonnet 35 is rotatably supported by the body frame 37 around the vertical axis Y1, and as shown by the solid line in FIG. 2, the driving unit structure 36 is circular. Posture can be switched between a retracting posture located inside the body so as to cover the upper part of the trunk 8 and a protruding posture projecting outward to the outside of the body so as to open the upper part of the trunk part 8, as shown by the dotted-dashed line in FIG. do. By switching the driving unit structure 36 to the protruding posture, the upper side of the driving unit 8 is largely opened, so that maintenance work on the driving unit 8 can be easily performed.

[Grain Tank]

As shown in Fig. 8, the bottom of the grain tank 6 is formed in a substantially V-shaped shape narrowing downward as seen from the front, and the grains stored in the lowermost end of the grain tank 6 are stored in the rear of the body. A conveying screw 51 conveying to the outside of the side is provided. The grain conveyed to the outside of the back side of the body by the conveyance screw 51 is conveyed by the unloader 9 (see Figs. 1 and 2) and discharged to the outside of the body.

As shown in Fig. 1, the unloader 9 is a vertical feed screw conveyor 9A that vertically feeds and conveys the grains conveyed by the conveying screw 51 upward, and the vertical feed screw conveyor 9A. While being connected to the upper part, it is equipped with the horizontal conveying screw conveyor 9B which horizontally feeds and conveys a grain to the discharge port 52 of a front end.

As shown in Fig. 10, while the grain tank 6 is formed in a shape that narrows downward when viewed from the front of the body, on the front side of the body in the bottom slope 6a of the shape that becomes narrow as it goes downward, it is flat. A first concave portion Q1 having a substantially rectangular shape when viewed from above and a substantially rhombic shape when viewed from the front of the body is formed. The first concave inlet Q1 has a rear side vertical surface 6b in a vertical position and an anterior-posterior position, a rear-side vertical surface 6c in a vertical position and a left-right position, It is a concave portion surrounded by each surface of the upper side surface 6d located on the upper side.

As shown in Fig. 11, on the upper side of the first concave inlet Q1, the front left side surface 6e of the attitude along the vertical direction located in a state close to the horizontal side wall 15 on the right side of the threshing device 5 And, an upper inclined surface 6f extending upward in the inclined left direction from the upper end of the front left surface 6e toward the upper direction of the threshing device 5, and a vertical upward extending from the upper end of the upper inclined surface 6f A bulging portion 6A formed by the extension-side vertical surface 6g of the posture along the direction, the front surface 6h located on the front surface side, and the rear surface 6i located on the rear surface side are formed. . Thus, by forming 6 A of bulge parts which bulge toward the upper direction of the threshing apparatus 5, grain storage volume is increased.

As shown in Figs. 10 and 11, a second concave inlet Q2 is formed as a concave groove extending to the rear side of the body of the first concave inlet Q1 and located upward toward the rear side of the aircraft. The second concave portion Q2 is formed from the right vertical surface 6j formed in the vertical direction from the upper end of the bottom inclined surface 6a to the inside of the tank, and the inner vertical surface 6k formed in a state in which it enters the tank, and is located upward toward the rear part of the aircraft It is formed in the shape of a groove surrounded by each surface of the bottom surface 6l of an inclination attitude, and the upper surface 6m of an inclination attitude located upward toward the rear part of a body. An exhaust pipe 75, which will be described later, is disposed in the second concave portion Q2 in a state in which it enters.

A third concave portion Q3 extending along the upper and lower direction is formed, continuing to the rear side of the body of the second concave portion Q2. The 3rd recessed part Q3 is formed in the state which is long in the up-and-down direction from the bottom slope 6a to the tank upper end part, and is also recessed inside the tank (body right side) in the right side part of the grain tank 6. The third concave portion Q3 is located at the rear side of the rear side surface 6i of the bulging portion 6A, and the rear side vertical surface 6n of the inclination posture located on the rear side of the aircraft as it moves toward the left of the aircraft, and is located on the innermost side It is formed surrounded by a narrow inner longitudinal surface 6o. In this 3rd recessed part Q3, the grain conveyor 22 is arrange|positioned in the entering state.

In a state where the lower portion in the corner portion between the rear side vertical surface 6n of the third recessed portion Q3 and the left surface 6p on the rear side is cut, it continues to the rear side of the body of the third recessed portion Q3. , a fourth concave portion Q4 having a substantially rhombic shape (see Fig. 9) in plan view is formed. The fourth concave portion Q4 has an inner vertical surface 6q in a longitudinal attitude and a forward-backward attitude, and an inclination attitude located closer to the front of the machine from the front end of the inner vertical surface 6q in a vertical attitude. It is a concave portion surrounded by each face of the rear side longitudinal surface 6r and the upper side surface 6s in an inclined posture substantially parallel to the bottom inclined surface 6a. In this fourth concave portion Q4, a second reducing device (not shown) that returns the second processed material such as rice with branches generated in the sorting portion of the threshing device 5 to the class chamber 14 enters. is placed as

The 5th recessed part Q5 for permitting passage of the discharge|emission rice straw conveying apparatus not shown is formed in the left part of the rear part of the grain tank 6. As shown in Fig. 11, across the left surface 6p on the rear side and the rear surface 6t located on the rear side, the rear side of the aircraft is provided with an inclined surface 6u of an inclined posture located on the right side of the aircraft, , a fifth recessed portion Q5 is formed.

The left surface 6e of the front part and the left surface 6p of the rear part side are formed at substantially the same position in the left-right direction of the body, and the extension-side vertical surface 6g of the bulging part 6A is the left surface 6e of the front part. It is formed at a position protruding in the rightward direction of the body from the left surface 6p on the rear side. The inner longitudinal surface 6k of the second concave portion Q2 and the inner longitudinal surface 6q of the fourth concave portion Q4 are formed at substantially the same position in the left-right direction of the aircraft.

As shown in Fig. 2, the grain tank 6 is supported by the body frame 37 so as to be rotatable around the vertical axis Y2, which is the rotational axis of the vertical feed screw conveyor 9A, and the normal working posture of retracting to the inside of the body. It is installed so that the posture can be changed between (the state shown by the solid line in FIG. 2) and the protruding posture protruding outward on the side of the body (the state shown by the chain dotted line in FIG. 2). When switching the driving unit structure 36 to the protruding posture, it is necessary to switch the grain tank 6 to the protruding posture in advance.

[Motor part]

As shown in Figs. 3 and 5, the motor unit 8 includes an engine 34, an air cleaner 54, a radiator 55 for cooling the engine, a cooling fan 56, and the like. The air cleaner 54 is provided in the air supply chamber component 35c of the engine bonnet 35, and the pre-cleaner 54a, as shown in FIGS. 1 and 2, is on the rear right side of the roof of the cabin 3. are available at the location. Then, as shown in Figs. 3, 5 and 6, a first exhaust gas treatment device 57 for reducing particulate matter contained in exhaust gas of the engine 34, and the first exhaust gas treatment device ( 57), and a second exhaust gas treatment device 58 (corresponding to the exhaust gas treatment operation in the present invention) for reducing nitrogen oxides contained in the exhaust gas treated.

The first exhaust gas treatment device 57 is equipped with a diesel particulate filter (DPF) (not shown), which is a known technique for collecting diesel particulates contained in exhaust gas, and reduces diesel particulates by allowing the exhaust gas to pass through.

The second exhaust gas treatment device 58 performs purification treatment of exhaust gas using selective catalytic reduction (SCR), which is a known technique. Specifically, urea water, which is an example of a reducing agent, is sprayed into the exhaust gas to hydrolyze it to generate ammonia, and the ammonia (NH ₃ ) and nitrogen oxides (NOx) contained in the exhaust gas are chemically reacted to produce nitrogen (N _{2 )} . ) and water (H ₂ O) to reduce nitrogen oxides contained in the exhaust gas.

As shown in FIGS. 3 and 6 , the first exhaust gas treatment device 57 is disposed inside the engine bonnet 35 . That is, in a state that is more inclined to the left side of the aircraft than the driver's seat 7, the longitudinal direction is along the front-rear direction of the aircraft at a location below the side panel 33 and above the engine 34 in the transverse direction of the aircraft. is placed as And, the first exhaust gas treatment device 57 is connected to and supported by the engine 34 by a pair of support parts 59 and 60 on both sides of the front and back of the aircraft.

As shown in FIG. 6 , an exhaust gas inlet 61 is provided at a lower portion on the front side of the body in the first exhaust gas treatment device 57, and the exhaust gas inlet 61 is connected to the engine 34 It is connected to the side exhaust pipe 63. As shown in FIG. 3 , an exhaust gas outlet 62 is provided at a right portion of the first exhaust gas treatment device 57 on the rear side of the body.

As shown in FIGS. 3 and 6, the second exhaust gas treatment device 58 is outside the engine bonnet 35 and is provided in a state located on the rear side of the body of the driver 4 in plan view. . The 2nd exhaust gas processing apparatus 58 is arrange|positioned in the state which overlaps with the grain tank 6 in planar view, while being located below the front part of the grain tank 6.

As described above, the grain tank 6 is formed in a shape that narrows downward when viewed from the front, and the first concave portion that is recessed toward the inside of the tank on the bottom inclined surface 6a of a shape that becomes narrower toward the bottom. Q1 is formed. And, as also shown in FIG. 8, the 2nd exhaust gas processing apparatus 58 is arrange|positioned in the state which enters the 1st recessed part Q1.

5 and 6, the second exhaust gas treatment device 58 includes a cylindrical dosing unit 64 through which urea water is injected and supplied to the exhaust gas supplied from the first exhaust gas treatment device 57. and a body processing unit 65 having a cylindrical shape having a larger diameter than the dosing unit 64 and performing reduction processing. The dosing unit 64 and the main body processing unit 65 are integrally connected at their respective lower parts, and communicate so that the exhaust gas supplied by spraying urea water from the dosing unit 64 is supplied to the main body processing unit 65 . The cylindrical dosing portion 64 and the main body processing portion 65 are each formed elongated along the direction along the central axis of the cylindrical shape.

The main body processing part 65 is arranged in a posture in which the direction along the central axis of the cylindrical shape is along the vertical direction of the body. The cylindrical dosing part 64 is located on the right side of the body with respect to the main body processing part 65, in a state in which it is arranged parallel to the main body processing part 65, in a posture in which the direction along the central axis of the cylindrical shape follows the vertical direction of the aircraft. are placed

Therefore, the second exhaust gas processing device 58 is disposed in a vertical position in a state in which the direction along the central axis of the cylindrical body of the cylindrical body processing unit 65 and the dosing unit 64, that is, the longitudinal direction is along the vertical direction, there is.

As shown in FIGS. 3 and 6 , the second exhaust gas treatment device 58 is capable of rotating the driving unit structure 36 by the connection support portion 66 on the upper side and the connection support portion 67 on the lower side. It is supported by the outer cylinder member 42 in the support member 38 for supporting it. That is, in each of the upper coupling support portion 66 and the lower coupling support portion 67, an L-shaped coupling bracket 68 is integrally fixed to the outer periphery of the outer cylinder member 42 when viewed from the side. . On the outer periphery of the main body processing portion 65 of the second exhaust gas processing device 58, a transverse support 69 is fixed to a location corresponding to the connecting brackets 68 on both the upper and lower sides. The second exhaust gas treatment device 58 is supported by the outer cylinder member 42 by connecting the upper and lower horizontal supporters 69 to the upper and lower coupling brackets 68 with bolts.

As shown in FIG. 3 , an exhaust gas outlet 62 is formed on the right side of the body on the rear side of the body in the first exhaust gas treatment device 57 (outside in the body width direction). 3 and 5, in the second exhaust gas processing device 58, an exhaust gas supply unit 70 is located on the upper side of the dosing unit 64 located on the right side of the body with respect to the main body processing unit 65. ) is formed.

As shown in Fig. 3, the exhaust gas outlet 62 of the first exhaust gas treatment device 57 and the exhaust gas supply section 70 of the second exhaust gas treatment device 58 are communicated with each other as a connecting pipe. They are connected in communication via (71). The communication connection pipe 71 is flanged to the exhaust gas outlet 62 of the first exhaust gas processing device 57 and is flanged to the exhaust gas supply portion 70 of the second exhaust gas processing device 58. .

The communication connecting pipe 71 is equipped with a flexible bellows pipe 71A, and has a configuration capable of bending and deformation. By providing the bellows pipe 71A, vibration of the engine 34 supported by the body frame 37 via the rubber mount is prevented from being transmitted to the second exhaust gas processing device 58, thereby processing the second exhaust gas. The device 58 is supported in a stable state.

3 and 5, a urea water tank 72 storing urea water as a reducing agent supplied to the second exhaust gas treatment device 58 is located below the bottom part 32 of the driving unit 4. provided on the side. The urea water tank 72 is supported by the body frame 37 . Although not described in detail, it is configured to supply the urea water in the urea water tank 72 to the second exhaust gas treatment device 58 via a pipe by means of a pump. In addition, the urea water remaining without spraying is returned to the urea water tank 72.

As shown in FIG. 6 , an exhaust gas outflow pipe 73 is provided at a location on the upper side of the body processing unit 65 in the second exhaust gas processing device 58 and on the rear side of the body. The exhaust gas outflow pipe 73 includes a proximal end side 73a extending horizontally or almost horizontally from the exhaust gas outlet 74 of the second exhaust gas treatment device 58 toward the rear side of the gas, and the proximal end side 73a. ) is provided with a bent tip side portion 73b that extends by bending in the upward and rearward direction of the body from the rearward state of the body. An exhaust pipe 75 is provided to discharge the exhaust gas processed by the first exhaust gas processing device 57 and the second exhaust gas processing device 58 and discharged through the exhaust gas outlet pipe 73 to the outside. . This exhaust pipe 75 will be described later.

[heat shield cover]

3, 6, 8, 13 and 14, located between the grain tank 6 and the second exhaust gas treatment device 58, the heat of the second exhaust gas treatment device 58 A heat shield cover 76 is provided to block the. This heat shield cover 76 is in a state of covering the location corresponding to each of the upper side location, the location corresponding to the side opposite to the threshing device 5, and the location corresponding to the rear side location of the periphery of the second exhaust gas treatment device 58. It is installed. If the description is added, the heat shield cover 76 is opposite to each of the inside vertical surface 6b, the rear side vertical surface 6c, and the upper side surface 6d in the first concave portion Q1 of the grain tank 6. It is installed so as to cover the location and insulate heat.

6 d of upper side surfaces in the 1st recessed part Q1 of the grain tank 6 are formed in the inclined attitude substantially parallel to the bottom inclined surface 6a. That is, the upper side surface 6d is formed in an inclined posture where the end of the right side of the body (opposite side to the threshing device) connected to the inner vertical surface 6b is at the lowest position and becomes higher toward the left side of the body (on the side of the threshing device). has been

As shown in FIG. 13, the upper surface 77 which covers the location opposed to the upper surface 6d of the grain tank 6 in the heat shield 76 is the upper surface 6d of the grain tank 6 ), it is installed in an inclination posture used as a higher position toward the threshing device 5 side. By placing the upper surface 77 in an inclined posture in this way, the space above the second exhaust gas processing device 58 can be widened, and the heat generated in the second exhaust gas processing device 58 is contained within the narrow space. It prevents overfilling and makes it easier to dissipate heat.

The upper surface 77 of the inclined thermal shield cover 76 is divided into a proximal end side portion 77a and an extension side portion 77b following it. The proximal end portion (77a) has a rear side surface (79) opposite to the rear side vertical surface (6c) of the inner side surface (78) and the grain tank (6) opposite to the inner vertical surface (6b) of the grain tank (6) and are integrally formed together. The lower end of the extension side portion 77b of the upper surface 77 is fixed to the proximal end side portion 77a of the upper surface 77 by connecting bolts at a plurality of places. By releasing the bolted connection, the extending side portion 77b can be removed.

13 and 14, the rear side surface 79 of the heat shield cover 76 covering the location facing the rear side vertical surface 6c of the grain tank 6 is the rear side vertical surface 6c Located between the inclined surface portion 79a along the aircraft, the horizontally extending installation surface portion 79b along the aircraft left and right direction, and the horizontally extending installation surface portion 79b and the extension side portion 77b of the upper surface 77 It is equipped with the upper side extension mounting surface part 79c which does, and the location which opposes the rear side vertical surface 6c of the grain tank 6 is covering substantially the whole area. An insertion portion 80 through which the exhaust gas outflow pipe 73 is inserted is formed at a location on the upper side of the horizontally extending installation surface portion 79b. The upper side extension mounting surface portion 79c has a porous member 81 as a ventilation portion. The porous member 81 is formed of a mesh body. The porous member 81 is not limited to a mesh body, and may be a porous plate body or the like formed by drilling a large number of holes.

On the inner side surface 78 of the heat shield cover 76 covering the location facing the inner side vertical surface 6b of the grain tank 6 (corresponding to the side surface on the side opposite to the threshing device 5 side), a porous shape as a ventilation portion A member 82 is provided. The porous member 82 is formed of a mesh body. The porous member 82 is not limited to a mesh body, and may be a porous plate body or the like formed by drilling a large number of holes.

A recessed portion 83 recessed toward the threshing device 5 side is formed on the lower side of the body front portion of the inner surface 78. By forming the concave part 83, the working space for an operator to put his or her hand into the driving part 8 is secured in the state which switched the grain tank 6 to the projecting posture.

As shown in FIG. 14 , a location on the left side of the body facing the threshing device 5 in the periphery of the second exhaust gas treatment device 58 is not covered with the heat shield cover 76 and is in an open state. This opened location overlaps with the inlet port 26 of the sorting wind of the tuyere 23 in the threshing device 5 and the side view. When the tuyere 23 rotates and sucks outside air through the inlet 26, the air around the second exhaust gas processing device 58 is also sucked in.

The air around the second exhaust gas processing device 58 has a high temperature due to heat generated in the second exhaust gas processing device 58 . During the harvesting operation in which the tuyere 23 is operating, such high-temperature air is sucked in by the tuyere 23 and passed through the inside of the threshing device 5, and then discharged to the outside of the machine. At this time, along with the air around the second exhaust gas processing device 58 being sucked in by the tuyere 23, the air in the motor unit 8 is also sucked in as well. In addition, since low-temperature air from the outside is sucked in through the porous member 82 on the inner surface 78, the temperature of the air around the second exhaust gas processing device 58 is lowered.

In a state where the tuyere 23 is not operating, such as during road driving, the air around the second exhaust gas treatment device 58 is not sucked in by the tuyere 23, but the second exhaust gas treatment device ( Since the air around 58 is discharged to the outside through the porous member 82 on the inner surface 78, the narrow space inside the heat shield cover 76 is not filled with heat.

The heat shield cover 76 is fixedly supported by fixing with bolts at a plurality of places to a support part (not shown) on the body side. When the grain tank 6 is switched to the protruding posture, the heat shield cover 76 remains on the body side. After switching the grain tank 6 to the protruding posture, in the case of carrying out maintenance work by switching the driving unit structure 36 to the protruding posture, the extending side portion 77b of the upper surface 77 of the heat shield cover 76 ) and the upper side extension mounting surface portion 79c are removed. Thereby, it is possible to avoid interference with the heat shield cover 76 due to rotation of the driving unit structure 36 . The upper side extension mounting surface portion 79c is integrally connected with the extension side portion 77b of the upper surface 77, so handling is easy.

In this way, the heat shield cover 76 is provided with a gap between the second exhaust gas treatment device 58 and the grain tank 6, and forms a heat insulation layer with air to form a second exhaust gas. It is made difficult for the heat|fever from the processing apparatus 58 to be transmitted to the grain tank 6.

A portion on the front side of the body facing the motor unit 8 in the periphery of the second exhaust gas processing device 58 is not covered with the heat shield cover 76 and is in an open state. The communication connection pipe 71 connecting the first exhaust gas processing device 57 and the second exhaust gas processing device 58 provided in the motor unit 8 should be properly disposed so as not to interfere with the heat shield cover 76. can

〔vent pipe〕

Between the threshing apparatus 5 and the grain tank 6, the exhaust pipe 75 extends upward so that the exhaust port 84 may be located above the upper end of the threshing apparatus 5. An exhaust port 84 is formed at the upper end of the exhaust pipe 75, and the upper end of the exhaust pipe 75 extends toward the threshing device 5 side.

As shown in FIGS. 4 and 12, the exhaust pipe 75 is a first exhaust pipe 75A as a vertically extending pipe located on the side of the second exhaust gas treatment device 58 and a pipe located on the side of the exhaust port 84. A second exhaust pipe 75B as an upper end of the exhaust pipe 75 is provided. The first exhaust pipe 75A extends upward and downward from a location corresponding to the exhaust gas outlet 74 of the second exhaust gas processing device 58 in a rearward upward inclined posture. The 2nd exhaust pipe 75B is curved with respect to the 1st exhaust pipe 75A, and is extended toward the threshing apparatus side.

75 A of 1st exhaust pipes are extended from the exit part of the exhaust gas outflow pipe 73 to the position corresponding to the upper end part of the threshing apparatus 5. As shown in FIG. 12, this first exhaust pipe 75A has a double pipe structure of a cylindrical inner pipe 85 positioned on the inner side and a cylindrical outer pipe 86 positioned on the outer side. There is, and the cover member 87 of cross section substantially U-shaped which covers the 2nd recessed part Q2 side of the grain tank 6 in the outer tube 86 is provided. In this way, the heat of the exhaust gas passing through the inside of the inner tube 85 is prevented from being transferred to the outside.

The inner tube 85 is fixed to the outer tube 86 in a state of being internally inserted into the outer tube 86, and protrudes upward from the end of the outer tube 86. The body front part side location of the outer tube 86 is supported by the right side wall of the threshing device 5 via the mounting bracket 88. The outer pipe 86 is supported by a connecting member 89 for supporting the grain conveyor 22 on the side wall on the right side of the threshing device 5. The cover member 87 is fixed to the mounting bracket 90 provided on the outer tube 86 by means of a bolt connection.

As shown in Fig. 12, the second exhaust pipe 75B is provided with a larger diameter than the inner pipe 85 of the first exhaust pipe 75A, and the upper portion of the second exhaust pipe 75B in the exhaust flow direction and the inner pipe The locations below the exhaust flow direction of 85 overlap along the exhaust flow direction, and a gap is formed in the radial direction therebetween. It is possible to cool the exhaust gas by sucking outside air into the inside through the gap by the ejector action accompanying the flow of the exhaust gas.

An exhaust port is formed in the 2nd exhaust pipe 75B, the 2nd exhaust pipe 75B is curved with respect to the 1st exhaust pipe 75A, and is facing the threshing apparatus 5 side. The 2nd exhaust pipe 75B is constituted by a cylindrical body having a substantially circular cross section, and is curved toward the threshing device 5 side toward the upper side as viewed in the front-and-back direction of the body, so as to bend in a substantially arcuate shape. The threshing device 5 It is installed extending toward the side. An exhaust port 84 is formed on the end face of the distal end of the second exhaust pipe 75B. The exhaust port 84 is formed in a shape in which the upper rim protrudes from the lower rim to the side that is spaced apart from the grain tank 6, that is, to the left side of the body. The exhaust port 84 is formed in a rectilinear shape when viewed from the front-back direction in an inclined posture in which the cylindrical body is located outside the upper side than the lower side.

And, as shown in FIG. 4, the exhaust port 84 of the second exhaust pipe 75B allows the upper structure 27 of the threshing device 5 to swing to the open position, so that the lower edge of the exhaust port 84 It is formed in the inclined shape retreated to the grain tank 6 side rather than the upper edge.

The tip of the exhaust pipe 75 is located lower than the upper end of the grain tank 6, and the tip of the exhaust pipe 75 is located lower than the horizontal feed screw conveyor 9B of the unloader 9 in the storage position. there is. Therefore, there is no fear that the exhaust pipe 75 interferes with the horizontal feed screw conveyor 9B not only in a state where the horizontal feed screw conveyor 9B is stored in the stored position, but also when it is removed from the stored position due to gas vibration or the like. .

The exhaust gas discharged from the engine 34 is subjected to purification treatment to reduce diesel particulates in the first exhaust gas treatment device 57, and nitrogen oxides contained in the exhaust gas are removed in the second exhaust gas treatment device 58. A purification process for reducing is performed, and the exhaust gas having completed the purification process is discharged through an exhaust pipe 75 to the outside of the body.

[Other Embodiments]

(1) In the above embodiment, the heat shield cover 76 is installed at each of the upper side location, the location corresponding to the side opposite to the threshing device 5, and the rear side location around the second exhaust gas treatment device 58. It was shown that only the corresponding location was covered, and the location on the side of the body facing the threshing device 5 and the location on the front side of the body facing the motor unit 8 were in an open state, but instead of this configuration, the threshing device ( It is good also as a structure to cover with the heat shield cover 76 also the location on the body side facing 5) and the location on the front side of the body facing the motor unit 8.

(2) In the above embodiment, the inner side surface 78 on the opposite side to the threshing device 5 side in the heat shield cover 76 has a configuration provided with a ventilation part (porous member 82), but such It is good also as a structure which does not have a ventilation part.

(3) In the above embodiment, the upper surface 77 of the heat shield cover 76 has a configuration in which it is installed in an inclined posture, but it is good as a configuration in which the upper surface 77 is installed in a horizontal posture instead of this configuration.

(4) In the above embodiment, the heat shield cover 76 is configured to cover the second exhaust gas treatment device 58 that purifies the exhaust gas using selective catalytic reduction (SCR). It is good also as a structure which covers the 1st exhaust gas processing apparatus 57 which reduces nitrogen oxide.

(5) In the above embodiment, it was shown that it was applied to a cutting-off type combine, but the present invention can also be applied to a normal type combine.

INDUSTRIAL APPLICABILITY The present invention can be applied to a combine equipped with an exhaust gas treatment device that purifies engine exhaust gas.

5: Exhaust device
6 : Grain Tank
6a: slope part
6b: inner longitudinal plane
6c: rear side
6d: upper side
8: prime mover
26: ventilation part
58: second exhaust gas treatment device (exhaust gas treatment device)
76: heat shield cover
77: upper surface
82: ventilation part (porous member)
Q1: recessed part

Claims (7)

A driving unit located on the front side of the body and equipped with an engine, a grain tank located on the rear side of the driving unit and storing grains after threshing with a threshing device, and an exhaust gas that purifies the exhaust gas of the engine. Equipped with a processing device;
The exhaust gas processing device is disposed below the grain tank, in a state in which the grain tank overlaps with the grain tank in plan view, in a vertical posture in which the longitudinal direction follows the vertical direction of the body,
Between the grain tank and the exhaust gas treatment device, a heat shield cover for blocking heat of the exhaust gas treatment device is provided,
The grain tank is formed in a shape that narrows downward when viewed from the front, and a concave portion that is recessed toward the inside of the tank is formed on the front side of the body of the inclined surface portion of the shape that narrows downward,
The concave portion is formed by the inner longitudinal plane of the vertical position and the front-back direction, the rear side vertical plane of the vertical position and the left-right direction, and the upper surface located on the upper side. surrounded,
The exhaust gas treatment device is disposed in a state entering the concave portion,
The heat shield cover covers and shields a location facing each of the inner vertical surface, the rear vertical surface, and the upper surface in the concave portion of the grain tank. According to claim 1,
The exhaust gas treatment device is disposed in a state entering the lower side of the threshing device side of the front body of the grain tank,
The heat shield cover covers, among the periphery of the exhaust gas treatment device, an upper side location, a location corresponding to the side opposite to the threshing device, and a location corresponding to each of the rear side location. delete According to claim 1,
The upper side surface in the concave portion is installed in an inclined posture to be in a higher position as it goes toward the threshing device,
The combine in which the upper surface of the said heat shield cover is installed in the inclined posture along the said upper side surface in the said concave part. According to claim 1 or 2,
A portion on the side of the body facing the threshing device in the periphery of the exhaust gas processing device is in an open state without being covered with the heat shield cover, and this open portion is viewed from the side with the intake port of the sorting wind in the threshing device. Duplicated combine. According to claim 5,
The combine in which a ventilation part is formed in the side surface on the side opposite to the said threshing apparatus side in the said heat shield cover. According to claim 1 or 2,
The combine according to claim 1, wherein a portion of the exhaust gas treatment device on the front side of the machine facing the motor unit is left open without being covered with the heat shield cover.

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