JP4650940B2 - Combine - Google Patents

Description

  The present invention relates to a combine that threshs a harvested cereal meal and selects and collects fine grains from the cereal.

  2. Description of the Related Art Conventionally, a traveling machine body of a combine is mounted side by side with a threshing device having a handling cylinder for threshing cereals, a rocking sorting mechanism and a wind sorting mechanism, and a grain tank. Between the threshing device and the grain tank, there is a cereal cylinder with a built-in cereal conveyor for transporting the first thing (the cereal after threshing) to the grain tank, and the second thing (cereal with branches There is provided a reduction cylinder incorporating a reduction conveyor for returning the grains and the pieces of spikes) into the threshing apparatus.

An example of this type of combine is disclosed in Patent Document 1. In the combine of Patent Literature 1, the whipping cylinder and the reduction cylinder are arranged on the side close to the object to be connected to each other. That is, a reduction cylinder extending in the front-rear direction is arranged between the threshing device and the grain tank on the side close to the threshing device, and the cereals extending in the vertical direction on the side close to the grain tank (the side far from the threshing device) A cylinder is arranged. The whipping cylinder and the reduction cylinder cross each other in a side view.
JP 2003-92919 A

  By the way, while the first thing such as a granule passes through the inside of the cereal cylinder, the second part including not only the cereal but also branch shoots and shavings etc. passes through the cereal cylinder. The reducing cylinder tends to be clogged more easily. If clogging such as branching in the reduction cylinder occurs, remove the grain tank etc. to expose the reduction cylinder, for example, remove the reduction cylinder from the threshing device, Sawdust etc. must be removed.

  However, in the conventional configuration, since the milled cylinder is located in a state of crossing the reducing cylinder before the reducing cylinder as seen from the operator (grain tank side), when performing the clogging removal work, There is a problem that the milling cylinder is in the way, the operator's hand is difficult to reach the reducing cylinder, and the work such as removing the reducing cylinder is troublesome.

  Therefore, the present invention has a technical problem to provide a combine that improves the maintainability of a reducing cylinder that is easily clogged.

In order to achieve this technical problem, the invention according to claim 1 is characterized in that a threshing device having a handling cylinder for threshing cereals, a rocking sorting mechanism and a wind sorting mechanism, and a grain tank are arranged side by side on the traveling machine body. Between the threshing apparatus and the grain tank, a cereal cylinder incorporating a cereal conveyor for conveying the first thing to the grain tank, and a second thing in the threshing apparatus A combiner provided with a reducing cylinder incorporating a reducing conveyor for returning, wherein the cerealing cylinder is disposed on a side closer to the threshing apparatus, and the reducing cylinder is disposed on the side farther from the threshing apparatus In a structure in which the end portion of the reducing cylinder and the upper portion of the swing sorting mechanism are communicated with each other via a second processing case, it extends from the starting end to the longitudinal center of the reducing cylinder. The part is a half that surrounds the reduction conveyor only half a circle. A window hole for maintenance is formed in a part from the starting end to at least the longitudinal center of the reducing cylinder, and a cover body for closing the window hole corresponds to the half cylinder part. Similarly, it is formed in a half cylinder type, and flanges are bent outwardly on both longitudinal edges of the cover body, while receiving pieces are outward on both longitudinal edges of the half cylinder The receiving pieces and the flanges corresponding to each other are overlapped and fastened .

  The present invention provides a threshing conveyor for carrying a threshing device and a grain tank side by side on a traveling machine body, and for transporting the first thing to the grain tank between the threshing device and the grain tank. The present invention relates to a combine provided with a cerealing cylinder with a built-in cup and a reduction cylinder with a built-in reduction conveyor for returning the second product into the threshing apparatus. Since the first thing such as fine grains passes through the inside of the above-mentioned milled grains, the second grain containing not only the fine grains but also branch bellflowers, shavings, etc. passes through the reduced grain. The reduction cylinder tends to be clogged more easily than the cylinder.

  Therefore, when configured as in claim 1, the milling cylinder is disposed on the side close to the threshing apparatus, and the reduction cylinder is disposed on the side far from the threshing apparatus so as to extend across the milling cylinder. Therefore, if the grain tank is removed, the reducing cylinder appears on the front side of the milled cylinder when viewed from the operator (the grain tank side), and the operator's hand can be easily placed on the reducing cylinder. Can be delivered to. As a result, there is an effect that maintenance work such as clogging removal in the reducing cylinder is facilitated.

Also, the cover body can be easily attached or closed. Therefore, the labor required for the maintenance work for the reducing cylinder can be greatly reduced, and the ease of the maintenance work can be further improved.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 10). 1 is a left side view of the combine, FIG. 2 is a plan view of the combine, FIG. 3 is a front view of the combine, FIG. 4 is a side sectional view of the threshing device, FIG. 5 is a skeleton diagram showing a power transmission system of the combine, FIG. Is a front sectional view of the threshing device, FIG. 7 is a plan sectional view near the right side of the threshing device, FIG. 8 is a perspective view showing the arrangement of the second processing case with respect to the threshing device, and FIG. FIG. 10 is a side view showing a state in which the cover body is removed from the reducing cylinder. In the following description, the left side in the traveling direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the traveling direction is also simply referred to as the right side.

  First, the overall structure of the combine will be described with reference to FIGS.

  The combine according to the present embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 and 2. At the front part of the traveling machine body 1, a pre-cutting processing device 3 that takes in while harvesting cereals is mounted by a single-acting hydraulic cylinder 4 so as to be adjustable up and down. A threshing device 5 with a feed chain 6 and a grain tank 7 for storing grain after threshing are mounted on the traveling machine body 1 side by side. In this embodiment, the threshing device 5 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the traveling direction of the traveling machine body 1. The grain tank 7 is configured to be horizontally rotatable around a vertical axis (in the embodiment, a vertical auger tube 9 of a discharge auger 8 to be described later, see FIGS. 1 and 2) provided at the rear portion of the traveling machine body 1. . Between the pre-harvest processing device 3 and the grain tank 7, a driving unit 10 having a steering lever, a driving seat, and the like is provided. An engine 11 as a power source is disposed below the operation unit 10.

  The pre-cutting processing device 3 is provided with a clipper-type cutting blade device 12 below the lower frame. In front of the lower frame, there are arranged three grain culling pulling devices 13. Between the culm pulling device 13 and the front end of the feed chain 6, the culm conveying device 14 is arranged. A weeding body 15 is projected in front of the lower part of the grain raising device 13.

  The threshing device 5 includes a handling cylinder 17 for threshing and threshing arranged in the handling chamber 16, and a swing sorting mechanism 18 and a wind sorting mechanism 19 arranged below the handling chamber 16. A rotating shaft 20 (see FIGS. 4 to 6) of the handling cylinder 16 extends along the conveying direction of the cereal by the feed chain 6 (in other words, the traveling direction of the traveling machine body 1). In the lower part of the threshing device 5, the first receiving bowl 21 in which the most refined grains, etc., of the grains selected by the both sorting mechanisms 18, 19 are collected, and the grains with the branch stems, the eared grains, etc. There is provided a second receiving bowl 22 where second things gather. The two receiving rods 21 and 22 of the present embodiment are horizontally provided above the rear portions of the traveling crawlers 2 and 2 in a side view in order of the first receiving rod 21 and the second receiving rod 22 from the front side in the traveling direction of the traveling machine body 1. ing.

  The root part of the cereals conveyed from the pre-harvest processing device 3 is inherited by the feed chain 6 and is nipped and conveyed. Then, the tip part of the cereal is threshed by the handling cylinder 17 in the handling chamber 16.

  The swing sorting mechanism 18 is for performing peristaltic sorting of cereals by a handling net 23 stretched below the handling cylinder 17, a pair of front and rear feed pans 24, 25, a chaff sheave 26, and the like. The wind sorting mechanism 19 is for performing wind sorting of cereals by the tang fan 27 provided below the feed pans 24 and 25 group.

  The threshing that has been threshed by the handling cylinder 17 and leaked from the handling net 23 falls onto the pair of front and rear feed pans 24, 25 that swing back and forth below the handling net 23, and is subjected to sorting while being moved backward. It is sent to the chaff sheave 26. At this time, the threshing on the feed pans 24 and 25 and the chaff sheave 26 is subjected to a sorting wind flowing backward from the Kara fan 27. Due to the interaction between the swing sorting and the wind sorting, the threshing is separated into grains and swarf.

  Of the cereal grains, the most refined ones pass through the Glen sheave 28 provided below the chaff sheave 26 and are collected in the most receiving bowl 21 while being guided by the cereal board. A second item such as a grain with a branch stem cannot be passed through the Glen sieve 28 and is collected in a second receiving rod 22 behind the first receiving rod 21. The sawdust is sucked into a suction fan 29 disposed at the rear part of the threshing device 5 and then discharged from the discharge port 30 provided at the rear part of the threshing device 5 to the outside of the machine.

  The first conveyor bowl 21 is internally provided with a first conveyor 31 that conveys the first article in the lateral direction along the first receptacle 21. A second conveyor 32 that conveys the second item in the horizontal direction along the second receiving rod 22 is internally provided.

  A cerealing cylinder 33 extending in the vertical direction is connected to a terminal portion that protrudes outward from one side wall 5a (right side wall in the embodiment) of the threshing device 5 near the grain tank 7 in the first receiving bowl 21. ing. Of the second receiving trough 22, the end portion protruding outward from one side wall 5 a near the grain tank 7 in the threshing device 5 is connected to the milling cylinder 33 via an annular mounting seat 76 (see FIG. 7). A reduction cylinder 34 that crosses and extends in the front-rear direction is connected in communication. Therefore, the whipping cylinder 33 and the reduction cylinder 34 are located between the threshing device 5 and the grain tank 7.

  In the present embodiment, the milling cylinder 33 is arranged on the side close to the one side wall 5a of the threshing device 5 so that the milling cylinder 33 and the reduction cylinder 34 do not interfere with each other, and the side near the grain tank 7 (threshing apparatus 5 on the side far from the one side wall 5a) (see FIGS. 6, 7 and 9).

  In the whipping cylinder 33, a whipping conveyor 35 is provided for carrying the first item toward the grain tank 7. In the reduction cylinder 34, a reduction conveyor 36 is provided for returning the second product to the swing sorting mechanism 18 for conveyance.

  The terminal part (upper end part) of the whipping cylinder 33 is one side (near the threshing device 5 in the grain tank 7) in a working posture in which the grain tank 7 is moved close to the threshing device 5 by horizontal rotation ( In the embodiment, it is configured to communicate with a receiving port (not shown) formed on the left side).

  The upper end portion of the first feed pan 24 in the end portion (front end portion) of the reducing cylinder 34 and the one side wall 5a (right side wall in the embodiment) of the threshing device 5 is the second processing cylinder for threshing the second thing again. 81 is communicated via a second processing case 80 having a built-in function.

  The first thing collected in the first receiving bowl 21 is accumulated in the grain tank 7 via the first conveyor 31 and the cereal conveyor 35. The first item in the grain tank 7 is carried out of the machine (for example, a truck bed) via the discharge auger 8. The second product collected in the second receiving bowl 22 is returned to the first feed pan 24 in the threshing device 5 through the second conveyor 32, the reduction conveyor 36, and the second processing cylinder 81, and re-sorted. .

  In addition, the waste handed over to the waste chain 37 from the rear end of the feed chain 6 is discharged to the rear of the traveling machine body 1 in a long state, or is appropriately lengthened by the waste cutter 38 (see FIG. 5). After being cut short, it is discharged to the rear of the traveling machine body 1.

  Next, the power transmission system of the combine will be described with reference to FIG.

  The engine 11 is driven by an output shaft 41 projecting from the engine 11 to drive the left and right traveling crawlers 2, 2, a traveling mission device 42, a threshing device 5, a cutting pretreatment device 3, and a discharge auger 8. Divided in one direction and transmitted.

  The traveling mission device 42 includes a traveling HST transmission mechanism 43 that includes a hydraulic pump and a hydraulic motor, and a turning HST transmission mechanism 44 that also includes a hydraulic pump and a hydraulic motor. The branching power from the output shaft 41 of the engine 11 toward the traveling mission device 42 is transmitted to the traveling pump shaft 45 of the traveling HST transmission mechanism 43, and the turning of the turning HST transmission mechanism 44 from the traveling pump shaft 45. Power is transmitted to the pump shaft 46.

  In both the traveling and turning HST transmission mechanisms 43 and 44, the pressure oil is appropriately sent from the hydraulic pump to the hydraulic motor by the power transmitted to the pump shafts 45 and 46. Then, by adjusting the inclination angle of the rotary swash plate in the hydraulic pump according to the operation amount of the steering lever provided in the operation unit 10, the discharge direction and the discharge amount of the pressure oil to the hydraulic motor are changed, and the traveling The rotation direction and the number of rotations of the motor shaft for turning or turning (not shown) and the driving speed and driving direction of the left and right traveling crawlers 2 and 2 are arbitrarily adjusted.

  The branching power from the output shaft 41 of the engine 11 to the discharge auger 8 is transmitted to the bottom conveyor 48 in the grain tank 7 and the vertical conveyor 49 in the vertical auger cylinder 9 in the discharge auger 8 via the tank input shaft 47. Then, power is transmitted to the discharge conveyor 51 in the horizontal auger cylinder of the discharge auger 8 via the connection screw 50.

  The branching power from the output shaft 41 of the engine 11 to the threshing device 5 and the pre-cutting processing device 3 is transmitted to the tang shaft 53 of the tang fan 57 via the threshing clutch 52, and branches from the tang shaft 53 in two directions. Power is transmitted.

  One of the power from the tang shaft 53 is transmitted to the first conveyor 31 and the cereal conveyor 35, the second conveyor 32 and the reduction conveyor 36, the suction shaft 54 of the suction fan 29, and the waste cutter 38.

  The other power from the tang shaft 53 is transmitted via the handling cylinder input shaft 55 by branching in three further directions: the pre-cutting processing device 3, the handling cylinder 17, and the second processing cylinder 81.

  The branching power from the handling cylinder input shaft 55 to the cutting pretreatment device 3 is once transmitted to the cutting transmission mechanism 56, and part of it is transmitted to the front end of the feed chain 6 through the swinging shaft 57 and the feed chain shaft 58. The The remaining branching power is transmitted from the cutting shaft 59 to the cutting input shaft 61 via the cutting clutch 60, and is transmitted from the cutting input shaft 61 to each part of the cutting pretreatment device 3.

  In the present embodiment, the power transmitted to the cutting input shaft 61 is transmitted to the lateral transmission shaft 63 via the longitudinal transmission shaft 62, and then, from the lateral transmission shaft 63, the three pulling transmission shafts 64 and the cutting blade drive shaft. Power is transmitted to 65. The power transmitted to each pulling transmission shaft 64 drives each pulling tine (not shown) of the culm pulling device 13 through the pulling sprocket shaft 66 and the pulling sprocket 67 fixed thereto. The power transmitted to the cutting blade drive shaft 65 drives the cutting blade device 12.

  The power is branched and transmitted from the left and right pulling transmission shafts 64 to the lower conveyance driving shaft 68 disposed between the adjacent pulling transmission shafts 64 and 64. The power transmitted to the lower left conveying drive shaft 68 is transmitted to the lower left conveying chain 70 of the cereal conveying device 14, the left star wheel 71 in the cereal whipping device 13, and the left driving sprocket 69 fixed thereto. The scraping belt 72 is driven. The power transmitted to the lower right transport drive shaft 68 is transmitted to the right lower and center star of the cereal haul raising device 13 through the lower right transport chain 70 of the cereal haul transport device 14 via the right drive sprocket 69 fixed thereto. The wheel 71 and the scraping belt 72 are driven.

  The power transmitted to the cutting input shaft 61 also branches to the vertical conveying chain, the upper conveying tine (both not shown), and the tip conveying tine 74 of the cereal conveying device 14 via the vertical axis 73. Is transmitted.

  On the other hand, branching power from the handling cylinder input shaft 55 toward the handling cylinder 17 is transmitted to the rotating shaft 20 of the handling cylinder 17 and the waste chain 37. The branching power from the handling cylinder input shaft 55 toward the second processing cylinder 81 is transmitted from the processing cylinder input shaft 75 to the rotating shaft 82 of the second processing cylinder 81 by transmission of a belt 77 and a pulley 78 (FIGS. 5 and 7). And FIG. 9).

  Next, with reference to FIGS. 6 to 10, an arrangement relationship between the whipping cylinder, the reduction cylinder, and the grain tank will be described.

  As described above, the whipping cylinder 33 and the reduction cylinder 34 are arranged between the threshing device 5 and the grain tank 7 so as to cross each other in a side view without interfering with each other. The whipping cylinder 33 is arranged on the side close to the one side wall 5a of the threshing apparatus 5, while the reduction cylinder 34 is arranged on the side close to the grain tank 7 (the side far from the one side wall 5a of the threshing apparatus 5). ing.

  A starting end portion (rear end portion) of the reducing cylinder 34 and a terminal portion protruding outward from one side wall 5a of the threshing device 5 in the second receiving trough 22 communicate with each other via an annular mounting seat 76. . Moreover, the 2nd process cylinder 81 which rethreshs the 2nd thing was built in the terminal part (front end part) of the reduction | restoration cylinder 34, and the upper location of the 1st feed pan 24 among the one side walls 5a of the threshing device 5. The second processing case 80 communicates. Therefore, the outer periphery of the midway portion in the whipping cylinder 33 is surrounded by the one side wall 5a, the attachment seat 76, the reduction cylinder 34, and the second processing case 80 in plan view (see FIG. 7).

  Thus, between the threshing device 5 and the grain tank 7, the whipping tube 33 is arranged on the side close to the one side wall 5 a of the threshing device 5, and the reduction tube 34 is far from the one side wall 5 a of the threshing device 5. If it is arranged to extend so as to intersect with the whipping cylinder 33, even if it is the case of the Glen tank specification, if the grain tank 7 is opened horizontally and rotated, the worker (grain) Since the reduction cylinder 34 that is likely to be clogged appears on the front side of the cereal barrel 33 as viewed from the tank 7 side), the operator's hand can easily reach the reduction cylinder 34. This facilitates maintenance work such as clogging in the reducing cylinder 34.

  A maintenance window hole 103 opened toward the grain tank 7 is formed in a portion from the starting end to the longitudinal center of the reduction cylinder 34. The window hole 103 is closed by a detachable or openable cover body 102.

  In the present embodiment, the part from the starting end to the longitudinal center of the reducing cylinder 34 is a half-divided cylindrical portion 101 that surrounds the reducing conveyor 36 only half a circle. And the opening for the grain tank 7 in this half cylinder part 101 becomes the window hole 103 for a maintenance (refer FIG.7 and FIG.10).

  As shown in FIG. 7, the cover body 102 of the present embodiment is similarly formed in a half cylinder shape corresponding to the half cylinder portion 101 of the reduction cylinder 34. The cover body 102 is configured to be detachable (attachable / detachable) with respect to the half tubular portion 101 of the reduction cylinder 34. In this case, flanges 105, 105 are formed outwardly bent at both longitudinal edges of the cover body 102, while the cover body 102 is disposed at both longitudinal edges of the half tubular portion 101 of the reduction cylinder 34. The receiving pieces 104, 104 that overlap the flange 105 are bent outward. The receiving piece 104 and the flange 105 corresponding to each other are overlapped, and the overlapping portions 104 and 105 are fastened with bolts and nuts. In this way, the part from the starting end to the longitudinal center of the reduction conveyor 36 is covered with the half tubular portion 101 and the cover body 102.

  As described above, a maintenance window hole 103 is opened toward the grain tank 7 at a portion near the starting end of the reduction cylinder 34, and the window hole 103 is closed with a detachable or openable cover body 102. Is used, it is possible to remove or open the cover body 102 quickly without removing the entire reduction cylinder 34 from the threshing device 5 and quickly remove the branch stalks, sawdust, etc. clogged in the reduction cylinder 34. . Further, the cover body 102 can be easily attached or closed. Therefore, the labor required for the maintenance work on the reduction cylinder 34 can be greatly reduced, and the ease of the maintenance work can be further improved.

  The grain tank 7 is a substantially box-shaped one manufactured by a blow molding method or the like using a synthetic resin as a material. The upper side end of the grain tank 7 near the threshing device 5 is over the reduction cylinder 34 from above when the grain tank 7 is in the working posture shown by solid lines in FIGS. 2 and 6. It is in the form of hangs. In other words, due to the presence of the overhang-like overhanging portion 106, the lower part of the side end of the grain tank 7 near the threshing device 5 is a recessed portion 107 that is recessed inward. In a state where the grain tank 7 is in the working posture, a space for avoiding interference with the grain tank 7 of the reduction cylinder 34 is formed between the recessed portion 107 of the grain tank 7 and the whipped cylinder 33. (See FIG. 6).

  According to this structure, since the overhang | projection part 106 formed in the side end upper part near the threshing apparatus 5 in the grain tank 7 is located in the dead space above the reduction | restoration cylinder 34 at the time of a working posture, this dead space is utilized effectively. And the volume (accommodation amount) of the grain tank 7 can be expanded by the part of the overhang | projection part 106, without enlarging the horizontal width dimension as the traveling body 1 whole.

  The second processing case 80 that connects the terminal portion of the reducing cylinder 34 and the upper portion of the first feed pan 24 in the one side wall 5a of the threshing device 5 is formed in a horizontally long cylindrical shape. As shown in FIGS. 6 and 7, the second processing case 80 is fitted into a fitting hole 85 formed at a location above the first feed pan 24 in the one side wall 5 a near the grain tank 7 in the threshing device 5. And is arranged so as to straddle the inside and outside of the threshing device 5. In this case, the axis 80a of the second processing case 80 extends in a direction (left and right lateral direction) intersecting the threshing conveyance direction W by the first feed pan 24 in plan view. The direction in which the axis 80a of the second processing case 80 extends is the same direction as the side-by-side direction of the whipping cylinder 33 and the reduction cylinder 34 (see FIGS. 6 and 7).

  A side end portion of the second processing case 80 located outside the threshing device 5 is closed with a lid plate 84. In addition, an inlet (not shown) that opens upward is formed on the outer peripheral upper portion of the second processing case 80 outside the threshing device 5. The terminal portion of the reduction cylinder 34 is connected to the insertion port. With this configuration, the second item conveyed to the end of the reduction cylinder 34 by the reduction conveyor 36 falls smoothly into the second processing case 80.

  In the second processing case 80, a discharge port that opens in a direction (left and right lateral direction) that intersects the conveying direction W of the threshing by the first feed pan 24 in a plan view at the side end located inside the threshing device 5. 89. A blocking plate 90 that covers at least the downstream side in the conveying direction W of threshing by the first feed pan 24 is provided on the outer peripheral side from the discharge port 89. This blocking plate 90 is affected by the wind formed by the rotation of the second processing cylinder 81, and the second thing after rethreshing is downstream from the discharge port 89 of the second processing case 80 in the transport direction W. It is intended to block the flow.

  In the present embodiment, the blocking plate 90 extends from the side end in the threshing device 5 in the second processing case 80 in a direction (horizontal direction) that intersects the transport direction W in plan view. That is, the blocking plate 90 is integrally connected to the side end portion (the peripheral portion of the discharge port 89) on the discharge port 89 side in the second processing case 80.

  Further, when the blocking plate 90 is viewed from the threshing device 5, the blocking plate 90 is curved obliquely downward toward the upstream side in the transport direction W in the first feed pan 24. In particular, the side view shape of the blocking plate 90 in the present embodiment is formed in a C shape so as to substantially surround the outer periphery of the discharge port 89 (see FIGS. 6 to 8). In other words, the side view shape of the blocking plate 90 is an arc shape along the rotation direction R (details will be described later) of the second processing cylinder 81. A notch 91 for allowing the inside of the second processing case 80 to face the front surface of the first feed pan 24 is provided between the circumferential edges of the blocking plate 90 in the first feed pan 24. It opens obliquely downward toward the upstream side (front side) in the direction W. The blocking plate 90 of the present embodiment surrounds a range of about 270 ° excluding the notch 91 in the outer periphery of the discharge port 89 in a side view.

  Furthermore, in this embodiment, the side end part (the side where the blocking plate 90 is extended) on the discharge port 89 side in the second processing case 80 is against the fitting hole 85 formed in the one side wall 5a of the threshing device 5. It is fitted from the outside. The second processing case 80 is detachably fastened to the threshing device 5. In this case, the flange 86 formed on the outer peripheral surface of the second processing case 80 is brought into contact with one side wall 5a of the threshing device 5, and threshing is performed from the outer surface side of the flange 86 (the end surface side opposite to the threshing device 5). A mounting bolt 87 is screwed toward one side wall 5a of the device 5.

  Inside the second processing case 80, a second processing cylinder 81 for rethreshing the second item is provided. The second processing cylinder 81 includes a rotating shaft 82 that extends in a direction (horizontal direction in the left and right directions) intersecting the conveying direction W of the threshing by the first feed pan 24. The extending direction of the rotating shaft 82 of the second processing cylinder 81 intersects (substantially orthogonal) with the extending direction of the rotating shaft 20 of the handling cylinder 17. The second processing cylinder 81 is configured to be rotatable around its rotation shaft 82. The rotation direction R of the second processing cylinder 81 is set to be counterclockwise in FIG. On the outer peripheral surface of the second processing cylinder 81, a large number of rotating teeth 83 project outward in the radial direction. On the inner peripheral surface of the second processing case 80, a plurality of tooth bars 88 (see FIG. 7) have a radius. It protrudes inward. The rotation tooth 83 and the tooth bar 88 are set so as to have a positional relationship that does not interfere with each other when the second processing cylinder 81 is rotated around the rotation shaft 82.

  In the present embodiment, one end portion of the rotation shaft 82 in the second processing cylinder 81 is pivotally supported with respect to the lid plate 84. A pulley 78 for power transmission is fixed to a portion of the rotating shaft 82 that protrudes outward from the cover plate 84. The other end of the rotating shaft 82 is rotatably supported with respect to a support arm 93 fixed to the inner peripheral side of the blocking plate 90 by bolting. That is, the rotation shaft 82 of the second processing cylinder 81 is stably supported in a state where it is bridged between the lid plate 84 and the support arm 93 in a doubly supported beam shape.

  As described above, the whipping cylinder 33 is configured to extend in the up-and-down direction, while the reduction cylinder 34 is configured to extend in the front-rear direction so as to intersect with the whipping cylinder 33, and the terminal portion of the reduction cylinder 34 and the threshing device If the structure which connects the upper part of the 1st feed pan 24 among the one side wall 5a of 5 via the 2nd processing case 80 of right-and-left horizontally long cylinder shape is employ | adopted, arrangement | positioning of the cerealing cylinder 33 and the reduction | restoration cylinder 34 will be carried out. In relation, since the one side wall 5a of the threshing device 5 and the reduction cylinder 34 are separated, the length of the second processing case 80 in the direction of the axis 80a can be made longer than that in the conventional case.

  In particular, in the present embodiment, a configuration is adopted in which the other end portion of the rotation shaft 82 in the second processing cylinder 81 is rotatably supported with respect to the support arm 93 fixed to the inner peripheral side of the shielding plate. The length of the rotating shaft 82 of the second processing cylinder 81 and the entire second processing case 80a, including the length of the blocking plate 90 extending from the side end in the threshing device 5 in the second processing case 80, The length in the direction of the axis 80a can be increased.

  Thereby, the distance which the 2nd thing moves in the 2nd processing case 80 for rethreshing will be ensured enough, and the improvement of the rethreshing function of the 2nd thing by the 2nd processing drum 81 will be aimed at. Can do.

  In the threshing device 5, a hook-shaped member 92 that protrudes obliquely downward toward the inside of the threshing device 5 is provided at an upper portion of the second processing case 80 in the inner surface of the right side wall 5 a. The bowl-shaped member 92 covers and hides almost the entire side end portion (including the blocking plate 90) in the threshing device 5 in the second processing case 80 in plan view. Due to the presence of the bowl-shaped member 92, threshing and dust are prevented from accumulating on the protruding portion of the second processing case 80 into the threshing device 5. Since the bowl-shaped member 92 itself is inclined obliquely downward toward the inside of the threshing device 5, most of the cereal grains and dust trying to be placed on the inclined surface of the bowl-shaped member 92 slide down on the first feed pan 24. It will be.

  In addition, the bowl-shaped member 92 of the present embodiment is inclined obliquely downward toward the inside of the threshing device 5 and is inclined obliquely downward and backward. By such inclination, the cereals flying toward the bowl-shaped member 92 are dropped toward the rear part of the first feed pan 24, and the cereals falling on the first feed pan 24 are dispersed.

  The configuration of each part in the present invention is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

It is a left view of a combine. It is a top view of a combine. It is a front view of a combine. It is side surface sectional drawing of a threshing apparatus. It is a skeleton figure which shows the power transmission system of a combine. It is front sectional drawing of a threshing apparatus. It is a plane sectional view near the right side in the threshing apparatus. It is a perspective view which shows the arrangement | positioning aspect of the 2nd process case with respect to a threshing apparatus. It is a perspective view which shows the arrangement | positioning relationship between a whipping cylinder and a reduction | restoration cylinder. It is a side view which shows the state which removed the cover body from the reduction | restoration cylinder.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Traveling crawler 5 Threshing device 5a One side wall 6 Feed chain 17 Handling cylinder 18 Oscillation sorting mechanism 19 Wind sorting mechanism 24 First feed pan 25 Second feed pan 26 Chaff sheave 27 Kara fan 28 Glen sheave 31 First conveyor 32 Two Number conveyor 33 Flouring cylinder 34 Reduction cylinder 35 Grain conveyor 36 Reduction conveyor 80 Second processing case 81 Second processing cylinder 82 Rotating shaft 101 of the second processing cylinder 101 Divided cylindrical portion 102 Cover body 103 Window hole

Claims (1)

A threshing device having a handling cylinder for threshing cereals, a swing sorting mechanism and a wind sorting mechanism, and a grain tank are mounted side by side on the traveling machine body, and between the threshing apparatus and the grain tank, , A whipping cylinder incorporating a cereal conveyor for transporting the first thing to the grain tank, and a reducing cylinder incorporating a reduction conveyor for returning the second thing into the threshing device are provided. A combine,
The milling cylinder is arranged on the side close to the threshing device, the reduction cylinder is arranged on the side far from the threshing apparatus so as to extend across the milling cylinder, and the end of the reduction cylinder and the swinging In the structure that communicates with the upper part of the sorting mechanism through the second processing case,
The part from the starting end to the longitudinal center of the reducing cylinder is formed by a half-cylinder-shaped portion that surrounds the reducing conveyor only a half circumference, and a maintenance window hole is formed at least from the starting end of the reducing cylinder to the longitudinal center. The cover body for closing the window hole is also formed in a half cylinder shape corresponding to the half cylinder portion,
While the flanges are bent outwardly at both longitudinal edges of the cover body, receiving pieces are formed outwardly bent at both longitudinal edges of the halved cylindrical part, and the receiving pieces corresponding to each other The combine characterized by overlapping and fastening with the said flange .

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