Combine
The introduction of a partition member with an elastically deformable first member and a rigid second member in the combine harvester addresses the issue of chaff accumulation between the threshing device and the grain tank, enhancing maintenance and equipment longevity.
Patent Information
- Application Number
- JP2023196778
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-11-20
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2043-11-20
AI Technical Summary
In combine harvesters, chaff discharged from the upper part of the handling chamber of the threshing device can accumulate between the threshing device and the grain tank, leading to maintenance issues and equipment deterioration.
A combine harvester design featuring a partition member between the handling cylinder and the grain tank, comprising an elastically deformable first member in close contact with the top plate and a more rigid second member, to prevent chaff from being discharged to the grain tank side.
The solution effectively prevents chaff from accumulating between the threshing device and the grain tank, improving maintainability and reducing the risk of equipment deterioration.
Smart Images
Figure 2025083097000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a combine harvester equipped with a threshing device and a grain tank.
Background Art
[0002] Conventionally, a combine harvester disclosed in Patent Document 1 below is known. The combine harvester disclosed in Patent Document 1 includes a cutting unit that cuts crops, a threshing device that threshes the crops cut by the cutting unit, and a grain tank (grain tank) that stores the crops threshed by the threshing device.
Prior Art Document
Patent Document
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In the above combine harvester, since a cover is provided between the threshing device and the grain tank, it is possible to prevent chaff from falling on the exhaust pipe between the threshing device and the grain tank. However, no measures have been taken to prevent chaff from being discharged from the upper part of the handling chamber of the threshing device toward the grain tank side. Therefore, the chaff discharged from the handling chamber may accumulate in the space between the threshing device and the grain tank, and there is a risk of deterioration in the maintainability of equipment and the like between the threshing device and the grain tank.
[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a combine harvester capable of preventing chaff from being discharged from the upper part of the handling chamber of the threshing device toward the grain tank side.
Means for Solving the Problems
[0006] A combine according to an embodiment of the present invention includes a cutting unit that cuts crops, a threshing device that threshes the crops cut by the cutting unit, and a grain tank that is arranged side by side with the threshing device and stores the crops threshed by the threshing device. The threshing device has a handling chamber into which crops are introduced from the cutting unit, a handling cylinder that is rotatably provided in the handling chamber and threshes the crops introduced into the handling chamber, and a top plate that covers the upper part of the handling chamber. A partition member is arranged between the handling cylinder and the grain tank to prevent chaff generated by threshing by the handling cylinder from being discharged from the upper part of the handling chamber to the grain tank side. The partition member includes a first member that is elastically deformable and is in close contact with the top plate, and a second member that has higher rigidity than the first member and is arranged in contact with the first member.
Advantages of the Invention
[0007] According to the combine of the present invention, it is possible to prevent chaff from being discharged from the upper part of the handling chamber of the threshing device to the grain tank side.
Brief Description of the Drawings
[0008]
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Mode for Carrying Out the Invention
[0009] Hereinafter, a preferred embodiment of the combine according to the present invention will be described. The combine 1 of this embodiment is a self-threshing combine. FIGS. 1 and 2 are views showing the overall configuration of the combine 1. In this embodiment, the traveling direction of the combine 1 in the working state is defined as the front. In FIGS. 1 and 2, the direction indicated by the arrow F is the front, the direction indicated by the arrow B is the rear, the direction indicated by the arrow L is the left, and the direction indicated by the arrow R is the right.
[0010] The combine 1 includes a traveling body 2 having a body frame 3 and a traveling device 4. The traveling device 4 is disposed below the body frame 3. The traveling device 4 is composed of a pair of left and right crawler traveling devices. A cabin 5 is disposed at the right front portion of the traveling body 2. A driver's seat 6 is provided inside the cabin 5. An engine (not shown) is disposed below the driver's seat 6.
[0011] The combine harvester 1 includes a cutting unit 8 that cuts crops (standing cereal straws), a threshing device 9 that threshes the crops cut by the cutting unit 8, and a grain tank 10 that stores the crops threshed by the threshing device 9. At the upper part of the grain tank 10, a grain discharging device 7 for discharging the grains in the grain tank 10 is connected. The cutting unit 8 is disposed in front of the cabin 5. The grain tank 10 and the threshing device 9 are arranged side by side in the left - right direction. The grain tank 10 is disposed behind the cabin 5. The threshing device 9 is disposed on the side (left side) of the grain tank 10.
[0012] As shown in FIG. 3, the threshing device 9 has a threshing section 11 and a sorting section 12. The threshing section 11 includes a conveying mechanism 13 that sandwiches the cut cereal straws conveyed from the cutting unit 8 and conveys them rearward, and a handling chamber 14 into which the crops are input from the cutting unit 8. The sorting section 12 is provided below the handling chamber 14. The sorting section 12 performs sorting processing while conveying the threshed product obtained in the threshing section 11. The conveying mechanism 13 is composed of a feed chain or the like.
[0013] As shown in FIGS. 3 and 4, the handling chamber 14 is formed by being partitioned by a front wall 15, a rear wall 16, an upper plate 17, a receiving net 18, a mounting member 92 (described later), etc. An entrance 19 of the handling chamber 14 is formed in the front wall 15. Below the entrance 19, a guiding member 20 for guiding the ear tip side of the cut stem straws to the entrance 19 is provided. Inside the handling chamber 14, a handling cylinder 21 for threshing the crops input into the handling chamber 14 is rotatably provided.
[0014] The handling cylinder 21 has a handling cylinder shaft 22, a cylindrical body 23 supported by the handling cylinder shaft 22, and handling teeth 24 attached to the outer peripheral portion of the body 23. The handling cylinder shaft 22 extends in the front - rear direction and is rotatably supported by the front wall 15 and the rear wall 16. The handling cylinder 21 rotates about the handling cylinder shaft 22 in the direction indicated by the arrow A1 in FIG. 4 (the direction in which the handling teeth 24 move from bottom to top on the side of the grain tank 10), and performs threshing processing on the ear tip side of the cut cereal straws conveyed by the conveying mechanism 13 with the handling action.
[0015] The receiving net 18 is provided along the outer periphery of the lower part of the handling cylinder 21. The receiving net 18 receives the threshed product that has been processed by the handling cylinder 21 and has fallen. The receiving net 18 allows single-grained grains, grains with branches, etc. among the received threshed products to leak downward from the mesh towards the sorting unit 12, and catches and prevents threshed straws (discharged straws) etc. from leaking to the sorting unit 12. After the threshed product is separated by the handling cylinder 21, the discharged straw of the harvested straw is discharged to the outside of the traveling body 2 by the discharged straw conveying mechanism 25.
[0016] As shown in FIG. 3, the sorting unit 12 includes a swinging sorting device 30 and a winnowing basket 31. The swinging sorting device 30 swings while conveying the threshed product supplied from the threshing unit 11 backward for screening. The winnowing basket 31 supplies a sorting air flow that assists in sorting the threshed product towards the swinging sorting device 30. The winnowing basket 31 is arranged at the front part of the sorting unit 12, and the sorting air flow supplied from the winnowing basket 31 flows backward and upward.
[0017] The swinging sorting device 30 includes a sieve case 32. The sieve case 32 includes a grain pan 33, a first sieve wire 34, a second sieve wire 35, a chaff sieve 36, a straw rack 37, etc. The grain pan 33 sorts the threshed product that has leaked from the front part of the receiving net 18 by the specific gravity difference and conveys it backward. The first sieve wire 34 loosens the threshed product sent from the grain pan 33 and supplies it to the chaff sieve 36.
[0018] The chaff sieve 36 screens the threshed product that has leaked from the rear part of the receiving net 18 and the threshed product from the first sieve wire 34 while conveying them backward. The second sieve wire 35 loosens the threshed product from the chaff sieve 36 and supplies it to the straw rack 37. The straw rack 37 screens the threshed product from the second sieve wire 35 and the threshed product from the chaff sieve 36 while conveying them backward. The discharged straw that has not leaked through in the straw rack 37 is discharged to the outside of the traveling body 2 from a dust discharge port (not shown) behind the swinging sorting device 30.
[0019] Behind the handling cylinder 21 and above the straw rack 37, a dust exhaust fan 38 is provided. The dust exhaust fan 38 sucks the straw scraps and the like conveyed by the sorting air from the winnowing fan 31 and discharges them to the outside of the traveling machine body 2 through the dust exhaust port.
[0020] The sorting unit 12 sorts the threshed product threshed by the threshing unit 11 into first-grade products (single-grained grains), second-grade products (forked grains, grains with attached branches, etc.), and third-grade products (straw scraps, chopped cereal straws, etc.) according to the above-described configuration. Among the sorted threshed products, the first-grade products and the second-grade products are recovered by a recovery unit 40 described later. The third-grade products are discharged to the outside of the traveling machine body 2.
[0021] As shown in FIG. 3, the threshing device 9 includes a recovery unit 40 that recovers the grains and the like obtained by sorting by the sorting unit 12. The recovery unit 40 includes a first-grade product recovery unit 41 that recovers the first-grade products and a second-grade product recovery unit 42 that recovers the second-grade products. A first screw 43 is disposed in the first-grade product recovery unit 41. The first screw 43 conveys the recovered first-grade products toward the right. A second screw 44 is disposed in the second-grade product recovery unit 42. The second screw 44 conveys the recovered second-grade products toward the right.
[0022] As shown in FIGS. 3 and 5, a first conveyor 45 that moves the first-grade products conveyed by the first screw 43 upward and conveys them to the grain tank 10 is connected to the right end portion of the first screw 43. A second conveyor 46 that moves the second-grade products conveyed by the second screw 44 upward and returns them to the swing sorting device 30 is connected to the right end portion of the second screw 44.
[0023] As shown in FIGS. 2 to 7 and the like, the threshing device 9 includes a top plate 50 that covers the upper part of the handling chamber 14. The top plate 50 constitutes an openable upper lid of the threshing device 9. Further, the threshing device 9 includes a cylinder 60 for opening and closing the top plate 50 (see FIG. 7). By extending the rod of the cylinder 60, the top plate 50 can be opened upward (see arrow A2 in FIG. 7). Along with the opening of the top plate 50, the handling cylinder 21 rises together with the top plate 50.
[0024] As shown in FIGS. 2 and 7, the top plate 50 has a first plate 51, a second plate 52, and a third plate 53. The first plate 51, the second plate 52, and the third plate 53 are arranged side by side in the left - right direction. The first plate 51 constitutes the right part of the top plate 50. The third plate 53 constitutes the left part of the top plate 50. The second plate 52 is arranged between the first plate 51 and the third plate 53.
[0025] The first plate 51 and the second plate 52 are connected by a hinge 54 (see FIGS. 7 and 8). On the lower surface of the second plate 52, a protrusion 55 protruding downward from the lower surface is provided. The protrusion 55 extends in the arrangement direction (left - right direction) of the threshing device 9 and the grain tank 10. The lower surface 55a of the protrusion 55 is inclined so that the amount of downward protrusion increases as it goes to the right (the first plate 51 side). A plurality (two in this embodiment) of protrusions 55 are provided at intervals in the front - rear direction. The second plate 52 and the third plate 53 are not connected, and one end (upper end) of a cylinder 60 is connected to the lower part of the third plate 53.
[0026] When the rod of the cylinder 60 extends, the left part of the third plate 53 rises, and the upper surface of the third plate 53 moves right - downward along the lower surface of the second plate 52 (see arrow A3 in FIG. 8). At this time, the upper surface of the third plate 53 moves along the lower surface of the protrusion 55 of the second plate 52. That is, the protrusion 55 has a function of guiding the movement of the third plate 53. As the third plate 53 moves, the second plate 52 rises with the hinge 54 as a fulcrum (see arrow A4 in FIG. 8). Thereby, the top plate 50 (the second plate 52 and the third plate 53) is opened upward, and along with the opening of the top plate 50 (the second plate 52 and the third plate 53), the handling cylinder 21 rises and is exposed.
[0027] When the handling cylinder 21 rises as the top plate 50 is opened, it rotates upward with the shaft body 61 (see FIG. 7 etc.) as the fulcrum. As shown in FIGS. 5 and 9, the shaft body 61 extends in the front-rear direction. A gear case 62 is attached to the front part of the shaft body 61. The rear part of the shaft body 61 is supported by the machine body frame 3 via a bracket or the like. The gear case 62 incorporates a gear mechanism (bevel gear mechanism) for transmitting the rotational power transmitted from the engine to the first pulley 63 (see FIG. 7).
[0028] The rotational power from the engine is transmitted to a power transmission mechanism 26 arranged at the lower part of the space S1 (see FIGS. 5 and 6) between the grain tank 10 and the threshing device 9. The power transmission mechanism 26 has a lower pulley 64, a belt 65, and an upper pulley 66. The lower pulley 64 is arranged at the lower part of the space S1. The upper pulley 66 is arranged at the upper part of the space S1. The belt 65 extends in the vertical direction in the space S1 and is looped around the lower pulley 64 and the upper pulley 66.
[0029] The rotational power from the engine is transmitted to the lower pulley 64, and the rotational power transmitted to the lower pulley 64 is transmitted to the upper pulley 66 via the belt 65. The central axis of the upper pulley 66 is connected to a first bevel gear built into the gear case 62. The gear case 62 incorporates a second bevel gear that meshes with the first bevel gear. A first pulley 63 is connected to the central axis of the second bevel gear. The rotational power transmitted to the upper pulley 66 is transmitted to the first pulley 63 via the first bevel gear and the second bevel gear. Thereby, the first pulley 63 rotates by the rotational power transmitted from the engine. As shown in FIG. 7, the belt 65 is looped around the first pulley 63 and the second pulley 67. The second pulley 67 is attached to the handling cylinder shaft 22. Thereby, the handling cylinder 21 rotates as the first pulley 63 rotates.
[0030] As shown in FIGS. 5 and 6, a first conveyor 45 and a second conveyor 46 are arranged in a space S1 between the grain tank 10 and the threshing device 9. The first conveyor 45 and the second conveyor 46 extend in the vertical direction in the space S1. The upper part of the first conveyor 45 is connected to the grain tank 10. The upper part of the second conveyor 46 is connected to a guide chute 71 provided on a wall plate 70 on the side of the grain tank 10 of the threshing device 9. The second material conveyed by the second conveyor 46 is returned above the chaff sieve 36 and the like in the threshing device 9 through the guide chute 71.
[0031] As shown in FIG. 5, a first connecting body 72 for connecting the first conveyor 45 and the first material recovery part 41 is provided at the lower part of the first conveyor 45. A second connecting body 73 for connecting the second conveyor 46 and the second material recovery part 42 is provided at the lower part of the second conveyor 46. The first connecting body 72 and the second connecting body 73 are located at the lower part of the space S1 between the grain tank 10 and the threshing device 9.
[0032] As shown in FIG. 10, a first inspection port 74 is provided on the first connecting body 72. The first inspection port 74 is covered by a detachable first lid 75. By removing the first lid 75, the first inspection port 74 can be opened. By opening the first inspection port 74, the first conveyor 45 and the first screw 43 can be inspected.
[0033] As shown in FIG. 11, a second inspection port 76 is provided on the second connecting body 73. The second inspection port 76 is covered by a detachable second lid 77. By removing the second lid 77, the second inspection port 76 can be opened. By opening the second inspection port 76, the second conveyor 46 and the second screw 44 can be inspected.
[0034] As shown in FIGS. 5 and 6, an exhaust pipe 80 for discharging the exhaust gas of the engine after being purified by an exhaust gas purification device (not shown) is disposed in a space S1 between the grain tank 10 and the threshing device 9. An inclined surface 10a that shifts rightward as it goes downward is formed at the lower part of the grain tank 10. The exhaust pipe 80 is disposed below this inclined surface 10a. Thereby, the whole or substantially the whole of the exhaust pipe 80 is located to the left of the left side surface (the side surface on the threshing device 9 side) 10b of the grain tank 10 (see FIG. 6). Therefore, the upper part of the exhaust pipe 80 is generally covered by the grain tank 10. Further, the upper part of the exhaust pipe 80 is covered by a cover 82.
[0035] As shown in FIG. 6, the exhaust pipe 80 extends from the front to the rear in the space S1. As shown in FIG. 5, an exhaust port 81 at the rear end of the exhaust pipe 80 opens obliquely downward to the right. The exhaust port 81 is located above the right crawler traveling device. The exhaust from the exhaust port 81 is discharged behind the right crawler traveling device.
[0036] As shown in FIG. 5, the exhaust pipe 80 extends from the front to the rear in the space S1 between the grain tank 10 and the threshing device 9. The exhaust pipe 80 is disposed so as to cross the right side of the first conveyor 45 and the second conveyor 46. The exhaust pipe 80 is disposed at a height above the first connector 72. Therefore, the exhaust pipe 80 is located at a height above the first inspection port 74. Further, the exhaust pipe 80 is disposed at a height where the vertical position overlaps with the second connector 73, and is located at a height where the vertical position overlaps with the second inspection port 76.
[0037] The exhaust pipe 80 is provided so as to be position-changeable within the space S1. Specifically, the exhaust pipe 80 is provided so as to be removable within the space S1. By changing the position of the exhaust pipe 80 (removing the exhaust pipe 80), access to the first inspection port 74 and the second inspection port 76 becomes easy. Thereby, it becomes easy to open the first inspection port 74 and the second inspection port 76 for maintenance.
[0038] As shown in FIGS. 4, 6, etc., a wall structure 90 is disposed between the handling cylinder 21 and the grain tank 10. As shown in FIGS. 6, 12, and 13, the wall structure 90 includes a wall plate 70 on the grain tank 10 side of the threshing device 9 and an upper structure 91 disposed above the wall plate 70. The wall plate 70 is disposed with one surface facing left (towards the handling cylinder 21) and the other surface facing right (towards the grain tank 10).
[0039] The upper structure 91 includes a mounting member 92 for attaching the receiving net 18. The wall structure 90 also includes a cover plate 98, which will be described later. As shown in FIGS. 4, 14, and 15, the mounting member 92 is disposed along the periphery of the handling cylinder 21 above the receiving net 18. The mounting member 92 is disposed on the grain tank 10 side of the handling cylinder 21.
[0040] As shown in FIGS. 13 to 17, etc., the mounting member 92 has a mesh plate 93, a side plate 94, and a support plate 95. The mesh plate 93 is curved in an arc shape and is disposed along the periphery of the handling cylinder 21. The mesh plate 93 is disposed on the grain tank 10 side above the receiving net 18. The receiving net 18 is attached to the lower end of the mesh plate 93. The straw debris generated by the threshing process performed as the handling cylinder 21 rotates can pass through the openings (mesh) of the mesh plate 93 (see arrow A5 in FIG. 15).
[0041] The side plate 94 includes a first side plate 941 provided at the front end of the mesh plate 93 and a second side plate 942 provided at the rear end of the mesh plate 93. As shown in FIG. 9, the first side plate 941 is attached to a first bracket 96 attached to the front portion of the shaft body 61. The second side plate 942 is attached to a second bracket 97 attached to the rear portion of the shaft body 61. As described above, the handling cylinder 21 rotates around the shaft body 61 (rotates around the shaft body 61), but the mounting member 92 does not move relative to the shaft body 61. That is, the position of the mounting member 92 is fixed.
[0042] The support plate 95 is a plate that supports the partition member 100 described later. As shown in FIG. 13 and the like, the support plate 95 extends in the front-rear direction so as to connect the first side plate 941 and the second side plate 942. As shown in FIG. 15 and the like, the support plate 95 has an inclined portion 95a and a horizontal portion 95b. The inclined portion 95a is connected to the first side plate 941 and the second side plate 942 and extends upward and to the right. The horizontal portion 95b extends to the right from the right end of the inclined portion 95a.
[0043] As shown in FIGS. 12, 15, and 16, a cover plate 98 is disposed below the horizontal portion 95b. The cover plate 98 forms a part of the upper structure 91 of the wall structure 90. The cover plate 98 is composed of a first cover plate 981 and a second cover plate 982. The first cover plate 981 and the second cover plate 982 are arranged adjacent to each other in the front-rear direction. A gear case 62 is attached to the first cover plate 981 (see FIGS. 12, 13, and 15).
[0044] The cover plate 98 (the first cover plate 981 and the second cover plate 982) has a first portion 98a, a second portion 98b, a third portion 98c, a fourth portion 98d, and a fifth portion 98e. The first portion 98a has a horizontal plane that abuts against the lower surface of the horizontal portion 95b of the support plate 95. The second portion 98b extends downward from the right end of the first portion 98a. The third portion 98c extends downward and to the right from the lower end of the second portion 98b. The fourth portion 98d extends to the right from the right lower end of the third portion 98c. The fifth portion 98e extends downward from the right end of the fourth portion 98d. The fifth portion 98e is attached to the wall plate 70 on the side of the grain tank 10 of the threshing device 9. Thereby, the cover plate 98 is fixed to the upper part of the wall plate 70.
[0045] As shown in FIG. 15, the cover plate 98 is disposed at a distance to the right of the screen plate 93. The cover plate 98 is disposed so as to cover the screen plate 93 on the right side of the screen plate 93. As shown in FIG. 9, the width (length in the front-rear direction) of the cover plate 98 is set to be equal to or greater than the width (length in the front-rear direction) of the handling cylinder 21. The front end of the cover plate 98 is located in front of the front end of the body 23 of the handling cylinder 21 in the front-rear direction. The rear end of the cover plate 98 is located in front of the rear end of the body 23 in the front-rear direction. The cover plate 98 prevents a part of the straw debris generated by threshing performed as the handling cylinder 21 rotates and passing through the openings (mesh) of the screen plate 93 from heading toward the granary tank 10 side.
[0046] As shown in FIGS. 4, 6, etc., a partition member 100 is disposed between the handling cylinder 21 and the granary tank 10. The partition member 100 prevents the straw debris generated by threshing by the handling cylinder 21 from being discharged from the upper part of the handling chamber 14 to the granary tank 10 side. As shown in FIGS. 12, 15, etc., the partition member 100 closes the space between the upper end of the wall structure 90 and the top plate 50. Specifically, the partition member 100 closes the space between the upper structure 91 and the top plate 50. More specifically, the partition member 100 closes the space between the mounting member 92 and the top plate 50. Specifically, the partition member 100 closes the space between the support plate 95 of the mounting member 92 and the top plate 50.
[0047] The partition member 100 is a member that prevents the straw debris generated by threshing by the handling cylinder 21 from being discharged from the upper part of the handling chamber 14 to the granary tank 10 side by partitioning the space between the handling cylinder 21 and the granary tank 10 together with the wall structure 90.
[0048] As shown in FIGS. 9 and 17, the partition member 100 extends in the front-rear direction. The extending direction of the partition member 100 is parallel to the rotational axis direction of the handling cylinder 21 (the extending direction of the handling cylinder axis 22). The front-rear position of the partition member 100 overlaps with the front-rear position of the handling cylinder 21. The width (length in the front-rear direction) of the partition member 100 is set to be equal to or greater than the width (length in the front-rear direction) of the cylinder body 23 of the handling cylinder 21. The front end of the partition member 100 is positioned in front of the front end of the cylinder body 23 in the front-rear direction. The rear end of the partition member 100 is positioned in front of the rear end of the cylinder body 23 in the front-rear direction. That is, the handling cylinder 21 overlaps with the partition member 100 in the front-rear position over the entire length in the front-rear direction.
[0049] As shown in FIGS. 9 and 17, the front-rear position of the partition member 100 overlaps with the front-rear position of the mounting member 92 and the cover plate 98. The width (length in the front-rear direction) of the partition member 100 is set to be equal to or greater than the width (length in the front-rear direction) of the mounting member 92 and the cover plate 98. The mounting member 92 and the cover plate 98 overlap with the partition member 100 in the front-rear position over the entire length in the front-rear direction.
[0050] As shown in FIGS. 4 and 7 etc., the partition member 100 is arranged at a position higher than the upper end of the cylinder body 23 of the handling cylinder 21. The upper end of the partition member 100 is at a position higher than the upper end of the handling cylinder 21. The lower end of the partition member 100 is at a height overlapping the handling cylinder 21 in the vertical direction. Also, the lower end of the partition member 100 is at a position higher than the shaft body 61. The partition member 100 is arranged to the left of the wall plate 70 on the side of the grain tank 10 of the threshing device 9. The left end of the partition member 100 is positioned to the left of the right end of the handling cylinder 21. The left-right position of the partition member 100 is at a position overlapping the left-right position of the receiving net 18 of the threshing device 9. That is, the left end portion of the partition member 100 is positioned to the left of the right end portion of the receiving net 18.
[0051] As shown in FIGS. 14 to 16 and the like, the partition member 100 is fixed to the attachment member 92. Specifically, the partition member 100 is fixed to the support plate 95 of the attachment member 92. More specifically, the partition member 100 is fixed to the upper surface of the horizontal portion 95b of the support plate 95. The partition member 100 is fixed to the upper surface of the horizontal portion 95b by, for example, a double-sided adhesive tape. By using a double-sided adhesive tape having an adhesive layer on both sides of the base material, cushioning properties can be imparted to the adhesive portion (boundary portion) between the partition member 100 and the attachment member 92. However, the fixing method of the partition member 100 is not particularly limited, and it may be fixed by an adhesive, for example.
[0052] FIGS. 18 to 20 show the overall shape of the partition member 100. The partition member 100 is formed in a substantially rectangular parallelepiped shape as a whole. The partition member 100 includes a first member 101 and a second member 102. The first member 101 is a member that can be elastically deformed. The second member 102 is a member having higher rigidity than the first member 101. The second member 102 is preferably a member that can be elastically deformed, but may be a member that cannot be elastically deformed. When the second member 102 is a member that can be elastically deformed, the amount of elastic deformation for the same load is smaller than that of the first member 101. That is, the elastic modulus of the second member 102 is larger than the elastic modulus of the first member 101.
[0053] As the first member 101, for example, a closed-cell foam (low-hardness rubber sponge) mainly composed of chloroprene rubber can be used. As the second member 102, for example, urethane foam can be used. However, the materials of the first member 101 and the second member 102 are not limited to these. For example, by making the first member 101 and the second member 102 foams of the same material and making the foaming ratio of the first member 101 larger than the foaming ratio of the second member 102, the rigidity of the second member 102 may be made higher than the rigidity of the first member 101.
[0054] The first member 101 has a function (sealing function) of ensuring a sealing property for closing the space between the upper end of the wall structure 90 and the top plate 50. The second member 102 has a function (shape retention function) of preventing the partition member 100 from being excessively deformed. Since the first member 101 is an elastically deformable member, it can exhibit a sealing function of reliably closing the gap between the upper end of the wall structure 90 and the top plate 50. Since the second member 102 is a member having higher rigidity than the first member 101, it is less likely to deform than the first member 101. Therefore, when the partition member 100 includes the second member 102, the partition member 100 is less likely to deform compared to the case where the partition member 100 is formed only of the first member 101, and the shape retention function of the partition member 100 can be exhibited.
[0055] The first member 101 is disposed in close contact with the top plate 50. The upper surface of the first member 101 is in close contact with the lower surface of the top plate 50. As shown in FIG. 21, the first member 101 is compressed by the weight of the top plate 50 and elastically deformed. That is, the height H1b of the first member 101 when the top plate 50 is closed (loaded) is smaller than the height H1a when the top plate 50 is open (not loaded) (H1b < H1a). Due to such elastic deformation occurring, the first member 101 can be in close contact with the top plate 50. Further, since the first member 101 is compressed by the weight of the top plate 50 and elastically deformed, it is possible to prevent the top plate 50 from floating when the top plate 50 is closed and not being completely closed on the partition member 100.
[0056] The second member 102 is disposed in contact with the first member 101. The first member 101 and the second member 102 are adhered to each other. However, the first member 101 and the second member 102 do not necessarily have to be adhered to each other. In the case of the present embodiment, the first member 101 and the second member 102 are disposed so as to overlap in the vertical direction. The first member 101 is located above the second member 102. Therefore, the first member 101 is in contact (close contact) with the top plate 50, but the second member 102 is not in contact with the top plate 50. That is, the partition member 100 includes the first member 101 that contacts the top plate 50 and the second member 102 that does not contact the top plate 50.
[0057] Since the rigidity of the second member 102 is higher than that of the first member 101, even when the first member 101 is elastically deformed by the weight of the top plate 50, the second member 102 does not elastically deform. That is, the height H2b of the second member 102 when the top plate 50 is closed on the first member 101 is the same as the height H2a when the top plate 50 is open (H2a = H2b). However, the second member 102 may elastically deform by an amount smaller than that of the first member 101 when the first member 101 is elastically deformed by the weight of the top plate 50.
[0058] As shown in FIG. 20, the height H1 of the first member 101 is lower than the height H2 of the second member 102. In other words, the height H2 of the second member 102 is higher than the height H1 of the first member 101. In this way, by making the height H2 of the second member 102, which has higher rigidity than the first member 101, higher than the height H1 of the first member 101, it is possible to prevent the partition member 100 from being excessively deformed (compressed deformation) by the weight of the top plate 50.
[0059] As shown in FIG. 20, the first member 101 has a length W1 in the left - right direction (the length in the arrangement direction of the threshing device 9 and the grain tank 10) that is larger than the height H1 (W1 > H1). Thereby, the first member 101 stands stably and is less likely to fall. Therefore, it is possible to prevent the first member 101 from falling to the side of the grain tank 10 or the opposite side due to the impact of straw debris generated by threshing by the threshing cylinder 21 or the opening - closing operation of the top plate 50.
[0060] The width W2 of the second member 102 is equal to the width W1 of the first member 101 (W1 = W2). However, the width W2 of the second member 102 may be larger than the width W1 of the first member 101 (W1 < W2). That is, it is preferable to set the width W2 of the second member 102 to be equal to or larger than the width W1 of the first member 101 (W1 ≤ W2). By setting it in this way, since the entire lower surface of the first member 101 can be adhered to the upper surface of the second member 102, the first member 101 and the second member 102 are firmly integrated, and the first member 101 is less likely to come off from the second member 102.
[0061] As shown in FIG. 18 and the like, the partition member 100 is provided with a recess 100a. The recess 100a is recessed downward from the upper surface of the partition member 100. The recess 100a is a portion into which the protrusion 55 provided on the top plate 50 fits. Therefore, the recess 100a is provided at a position corresponding to the protrusion 55. In the case of the present embodiment, since two protrusions 55 are provided at intervals in the front-rear direction, the recess 100a is provided at two locations corresponding to the protrusions 55. By providing the recess 100a in the partition member 100, when the top plate 50 is closed, it is possible to prevent the protrusion 55 from resting on the partition member 100 and the top plate 50 from floating (not closing completely).
[0062] The recess 100a is provided in the first member 101. The depth of the recess 100a is equal to or greater than the height of the first member 101. That is, the depth of the recess 100a is the same as the height of the first member 101 or greater than the height of the first member 101. When the depth of the recess 100a is the same as the height of the first member 101, the recess 100a is provided only in the first member 101. When the depth of the recess 100a is greater than the height of the first member 101, the recess 100a is provided so as to extend from the first member 101 to the second member 102. However, the recess 100a does not reach the lower end of the second member 102.
[0063] The depth of the recess 100a is set according to the height of the protrusion 55. When the depth of the recess 100a is the same as the height of the protrusion 55, the protrusion 55 fits within the depth of the recess 100a, so the partition member 100 will not be deformed by being pushed by the protrusion 55. However, due to errors during the manufacture or assembly of the protrusion 55, the height of the protrusion 55 may be greater than the depth of the recess 100a. Even in this case, by making the second member 102 an elastically deformable member, the portion of the second member 102 that contacts the protrusion 55 (the portion being pushed) deforms downward. By thus deforming the second member 102, the error can be absorbed.
[0064] As shown in FIG. 22, the lower surface 55a of the protruding portion 55 is inclined such that the amount of downward protrusion increases as it goes rightward. In the range where the partitioning member 100 and the protruding portion 55 overlap in the left - right direction, at the position P1 where the lower surface 55a of the protruding portion 55 is the highest, the height of the lower surface 55a of the protruding portion 55 and the height of the upper end of the second member 102 are the same (or approximately the same). On the other hand, at the position P2 to the right of the position P1 where the lower surface 55a of the protruding portion 55 is the highest in the range where the partitioning member 100 and the protruding portion 55 overlap in the left - right direction, the height of the lower surface 55a of the protruding portion 55 is lower than the height of the upper end of the second member 102. Therefore, when the depth of the concave portion 100a is the same as the height of the protruding portion 55 at the position P1, at the position P2, the second member 102 hits the protruding portion 55 and is pushed downward. At this time, by making the second member 102 a member that can be elastically deformed, the portion of the second member 102 that hits the protruding portion 55 (the portion being pushed) is recessed downward and deformed (see the enlarged circular view in FIG. 23). By this deformation of the second member 102, the inclination of the protruding portion 55 can be absorbed.
[0065] As shown in FIG. 23, the width W3, which is the length of the concave portion 100a in the front - rear direction, is larger than the width W4, which is the length of the protruding portion 55 in the front - rear direction (W3>W4). Thereby, the clearance (clearance) between the concave portion 100a and the protruding portion 55 can absorb the mounting error of the position of the protruding portion 55 in the front - rear direction. Therefore, in the front - rear direction, the protruding portion 55 can be completely housed in the concave portion 100a. Since the protruding portion 55 is housed in the concave portion 100a, the protruding portion 55 is sandwiched between the partitioning members 100 from the front and rear, so the positional relationship between the protruding portion 55 and the partitioning member 100 is stabilized.
[0066] As described above, the depth of the recess 100a is equal to or greater than the height of the first member 101. Therefore, as shown in FIGS. 18, 19, etc., the first member 101 is divided by the recess 100a into a plurality of members. In the case of this embodiment, the first member 101 is divided into three by two recesses 100a. However, the first member 101 may be divided into two by one recess 100a, or may be divided into four or more by three or more recesses 100a. Since the number of the recesses 100a is set to a number corresponding to the number of the protruding portions 55, the number of divisions of the first member 101 is determined corresponding to the number of the protruding portions 55.
[0067] Here, referring to FIG. 15, the operation (function) of the partition member 100 will be described in detail. When the handling cylinder 21 rotates and threshing is performed, the chaff generated during threshing is bounced upward along with the rotation of the handling cylinder 21. The chaff is also carried upward by the sorting air generated by the rotation of the winnowing basket 31. As a result, the chaff passes through the openings (meshes) of the wire mesh plate 93 of the mounting member 92 and moves upward, and a part of it heads toward the space between the wall structure 90 and the top plate 50 (see arrow A5 in FIG. 15). However, since the space between the wall structure 90 and the top plate 50 is blocked by the partition member 100, the chaff cannot move through the space between the wall structure 90 and the top plate 50 to the side of the grain tank 10. That is, the movement of the chaff to the side of the grain tank 10 is blocked by the partition member 100. The chaff whose movement to the side of the grain tank 10 is blocked by the partition member 100 falls and returns into the handling chamber 14, so it is not discharged to the side of the grain tank 10.
[0068] By the above-described operation, the partition member 100 prevents the chaff generated by the threshing by the handling cylinder 21 from being discharged from the upper part of the handling chamber 14 to the side of the grain tank 10. More specifically, the partition member 100 prevents the chaff generated by the threshing by the handling cylinder 21 from being discharged from the upper part of the handling chamber 14 to the space S1 between the threshing device 9 and the grain tank 10.
[0069] Here, as described above, the partition member 100 is located at a position higher than the upper end of the body 23 of the handling cylinder 21 and to the left of the wall plate 70 on the side of the grain tank 10 of the threshing device 9. Also, the left end of the partition member 100 is located to the left of the right end of the handling cylinder 21. Thereby, the partition member 100 can prevent the discharge of the straw chips flipped upward by the rotation of the handling cylinder 21 toward the grain tank 10 at a position near the handling chamber 14. Therefore, compared with the case where the partition member 100 is arranged at another position (for example, inside the space S1), the discharge of the straw chips toward the grain tank 10 can be surely and easily prevented.
[0070] When there is no partition member 100, the straw chips generated by threshing with the handling cylinder 21 are discharged from the upper part of the handling chamber 14 to the space S1, so that the straw chips accumulate above or near the articles arranged in the space S1. Therefore, when performing maintenance on the articles, the deposited straw chips must be removed, which takes time and effort for maintenance. However, when there is the partition member 100, the deposition of the straw chips above or near the articles arranged in the space S1 can be prevented, so that the labor for maintenance can be reduced.
[0071] As described above, in the space S1 between the threshing device 9 and the grain tank 10, an exhaust pipe 80, a first conveyor 45, a second conveyor 46, etc. are arranged. When straw chips accumulate near the lower parts of the first conveyor 45 and the second conveyor 46 arranged in the space S1, a part or the whole of the first lid 75 and the second lid 77 are covered with the straw chips. Therefore, when removing the first lid 75 and the second lid 77 to open the first inspection port 74 and the second inspection port 76 for maintenance (such as inspection), it takes time and effort to remove the straw chips covering the first lid 75 and the second lid 77. However, when there is the partition member 100, the first lid 75 and the second lid 77 are not covered with the straw chips. Therefore, the labor for removing the straw chips covering the first lid 75 and the second lid 77 is saved, and it becomes possible to reduce the labor for maintenance.
[0072] In addition, in the space S1, a compressor 110 that forms part of an air conditioner unit (not shown), a clutch mechanism 111 including a threshing clutch and a cutting clutch, a power transmission mechanism 26 for transmitting the rotational power of the engine to the handling cylinder 21, etc. are also arranged (see FIGS. 5 and 6). When chaff is discharged into the space S1, the chaff adheres to these mechanisms and devices, so it takes time to remove the adhered chaff during maintenance. However, by preventing the chaff from being discharged into the space S1 by the partition member 100, it is possible to prevent the chaff from adhering to the mechanisms and devices arranged in the space S1, so the labor for maintenance can be reduced.
[0073] FIG. 24 shows a first modification example of the partition member 100. In the partition member 100 of the first modification example, the first member 101 and the second member 102 are arranged side by side in the horizontal direction. Specifically, the first member 101 and the second member 102 are arranged side by side in the left-right direction. The second member 102 is arranged on the right side (the side of the grain tank 10) of the first member 101. The height of the first member 101 is higher than the height of the second member 102.
[0074] In the partition member 100 of the first modification example, the first member 101 abuts on the top plate 50, and the second member 102 does not abut on the top plate 50. By the first member 101 abutting on the top plate 50 and elastically deforming, it can be in close contact with the top plate 50. The second member 102 can prevent the first member 101 from falling by abutting on the side surface (right surface) of the first member 101.
[0075] FIG. 25 shows a second modification example of the partition member 100. When the first member 101 and the second member 102 are arranged side by side in the horizontal direction (left-right direction), as shown in FIG. 25, the arrangement of the first member 101 and the second member 102 may be the reverse of that in the first modification example. That is, the second member 102 may be arranged on the left side (the side opposite to the grain tank 10 side) of the first member 101. In the case of the partition member 100 of the second modification example, by adhering and integrating the first member 101 and the second member 102, the partition member 100 stands up stably, so it is possible to prevent the first member 101 from falling.
[0076] Figure 26 shows a third modification example of the partition member 100. When the first member 101 and the second member 102 are arranged side by side in the horizontal direction (left - right direction), as shown in Figure 26, the first member 101 may be sandwiched between the two second members 102. The height of the first member 101 is higher than the heights of the two second members 102. In the case of the partition member 100 of the third modification example, it is possible to more reliably prevent the first member 101 from falling.
[0077] Figure 27 shows a fourth modification example of the partition member 100. As shown in Figure 27, the partition member 100 may be configured by stacking three or more members in the vertical direction. The partition member 100 of the fourth modification example includes a third member 103 in addition to the first member 101 and the second member 102, and the first member 101, the second member 102, and the third member 103 are arranged so as to overlap in the vertical direction. The third member 103 is arranged between the first member 101 and the second member 102. The rigidity of the third member 103 is higher than that of the first member 101 and lower than that of the second member 102. In the case of the partition member 100 of the fourth modification example, by making the rigidity (resistance to deformation) of the partition member 100 change step - by - step in the vertical direction, it is possible to prevent stress from concentrating on a part of the partition member 100.
[0078] Figure 28 shows a fifth modification example of the partition member 100. The partition member 100 of the fifth modification example is the same as that shown in Figure 20 in that the first member 101 and the second member 102 are arranged so as to overlap in the vertical direction, but is different in that the boundary surface 100b between the first member 101 and the second member 102 is inclined. The boundary surface 100b, which is the adhesion surface between the first member 101 and the second member 102, is inclined with respect to the horizontal direction. Specifically, the boundary surface 100b between the first member 101 and the second member 102 shifts upward from the left side toward the right side (toward the green tank 10 side). In the case of the partition member 100 of the fifth modification example, since the adhesion area between the first member 101 and the second member 102 can be increased, the first member 101 and the second member 102 can be firmly integrated. Also, it is possible to make it difficult for the first member 101 to fall to the right side (toward the green tank 10 side).
[0079] Figure 29 shows a sixth modified example of the partition member 100. In the partition member 100 of the sixth modified example, the depth of the concave portion 100a is smaller than the height of the first member 101. Therefore, the first member 101 is a continuous single member without being divided by the concave portion 100a. In the case of the partition member 100 of the sixth modified example, the strength of the first member 101 can be increased.
[0080] Figure 30 shows a seventh modified example of the partition member 100. In the partition member 100 of the seventh modified example, the first member 101 and the second member 102 are arranged side by side in the longitudinal direction (front-rear direction) of the partition member 100. The first member 101 is sandwiched between the second members 102 from both the front and rear sides. The first member 101 includes a portion where the concave portion 100a is provided, and the second member 102 does not include a portion where the concave portion 100a is provided. In the case of the partition member 100 of the seventh modified example, the overall strength of the partition member 100 can be increased.
[0081] Figure 31 shows an eighth modified example of the partition member 100. In the partition member 100 of the eighth modified example, the first member 101 and the second member 102 are arranged overlapping in the vertical direction, but the concave portion 100a is not provided. Therefore, the upper surface of the first member 101 is formed as a flat surface. The partition member 100 of the eighth modified example can be adopted when the protruding portion 55 is not provided on the top plate 50, or when the partition member 100 and the protruding portion 55 are in a position where they do not interfere with each other.
[0082] Figure 32 shows a ninth modified example of the partition member 100. In the partition member 100 of the ninth modified example, the shape seen from the front or the rear is trapezoidal. The trapezoid has a lower side larger than the upper side. The first member 101 and the second member 102 both have a trapezoidal shape when seen from the front or the rear. The lower side of the trapezoid of the first member 101 and the upper side of the trapezoid of the second member 102 are adhered. The length of the lower side of the trapezoid of the first member 101 is the same as the length of the upper side of the trapezoid of the second member 102. In the case of the partition member 100 of the ninth modified example, since the lower side of the partition member 100 is larger than the upper side, the partition member 100 is more stable and less likely to fall over.
[0083] FIG. 33 shows a tenth modification example of the partition member 100. In the partition member 100 of the tenth modification example, the upper, left, and right sides of the second member 102 are covered by the first member 101. Therefore, the upper, left, and right surfaces of the partition member 100 are composed of the first member 101. The lower surface of the partition member 100 is composed of the first member 101 and the second member 102. In the case of the partition member 100 of the tenth modification example, the second member 102 serves as a core material located inside the first member 101, and excessive deformation of the partition member 100 can be suppressed.
[0084] FIG. 34 shows an eleventh modification example of the partition member 100. In the partition member 100 of the eleventh modification example, the upper, lower, left, and right sides of the second member 102 are covered by the first member 101. Therefore, the upper, lower, left, and right surfaces of the partition member 100 are composed of the first member 101. In the case of the partition member 100 of the eleventh modification example, the second member 102 serves as a core material located inside the first member 101, and excessive deformation of the partition member 100 can be suppressed. Also, since the periphery of the first member 101 is surrounded by the second member 102, separation between the first member 101 and the second member 102 can be prevented.
[0085] As described above, a plurality of examples of the shape of the partition member 100 have been illustrated and described. However, the shape of the partition member 100 is not limited to the illustrated shape, and other shapes may be used.
[0086] Also, regarding the arrangement of the partition member 100, in the above-described embodiment, the partition member 100 was fixed to the attachment member 92, but it may be fixed to other parts. For example, the partition member 100 may be fixed to the cover plate 98. Also, the partition member 100 may be attached to the lower surface of the top plate 50. That is, as long as the partition member 100 can block the space between the wall structure 90 and the top plate 50 when the top plate 50 is closed, it may be fixed to a part other than the attachment member 92.
[0087] A preferred embodiment of the present invention provides the combine 1 described in the following items.
[0088] (Item 1) A combine harvester 1 comprising a cutting unit 8 for cutting crops, a threshing device 9 for threshing the crops cut by the cutting unit 8, and a grain tank 10 arranged side by side with the threshing device 9 for storing the crops threshed by the threshing device 9. The threshing device 9 includes a handling chamber 14 into which crops are fed from the cutting unit 8, a handling cylinder 21 rotatably provided in the handling chamber 14 for threshing the crops fed into the handling chamber 14, and a top plate 50 covering the upper part of the handling chamber 14. A partition member 100 is arranged between the handling cylinder 21 and the grain tank 10 to prevent chaff generated by threshing by the handling cylinder 21 from being discharged from the upper part of the handling chamber 14 to the grain tank 10 side. The partition member 100 includes a first member 101 that is elastically deformable and in close contact with the top plate 50, and a second member 102 that is more rigid than the first member 101 and is arranged in contact with the first member 101.
[0089] According to the combine harvester 1 according to this Item 1, it is possible to prevent chaff from being discharged from the upper part of the handling chamber 14 of the threshing device 9 to the grain tank 10 side. Specifically, since a partition member 100 for preventing chaff generated by threshing by the handling cylinder 21 from being discharged from the upper part of the handling chamber 14 to the grain tank 10 side is arranged between the handling cylinder 21 and the grain tank 10, it is possible to prevent chaff from being discharged from the upper part of the handling chamber 14 to the grain tank 10 side. More specifically, since the first member 101 is in close contact with the top plate 50, it is possible to prevent chaff from being discharged through the vicinity of the top plate 50 from the upper part of the handling chamber 14. Further, since the second member 102, which is more rigid than the first member 101, is arranged in contact with the first member 101, excessive deformation of the partition member 100 is prevented. By the cooperation of the sealing function of the first member 101 and the shape-retaining function of the second member 102, the partition member 100 can surely prevent chaff from being discharged from the upper part of the handling chamber 14 to the grain tank 10 side.
[0090] (Item 2) The combine 1 according to item 1 includes a wall structure 90 disposed between the handling cylinder 21 and the grain tank 10, and the partition member 100 closes the space between the upper end of the wall structure 90 and the top plate 50.
[0091] According to the combine 1 according to this item 2, it is possible to prevent the straw debris generated by threshing by the handling cylinder 21 from being discharged to the grain tank 10 side through the space between the upper end of the wall structure 90 disposed between the handling cylinder 21 and the grain tank 10 and the top plate 50.
[0092] (Item 3) The wall structure 90 includes a wall plate 70 on the grain tank 10 side of the threshing device 9 and an upper structure 91 disposed above the wall plate 70, and the partition member 100 closes the space between the upper structure 91 and the top plate 50. The combine 1 according to item 2.
[0093] According to the combine 1 according to this item 3, it is possible to prevent the straw debris generated by threshing by the handling cylinder 21 from being discharged to the grain tank 10 side through the space between the upper structure 91 disposed above the wall structure 90 and the top plate 50.
[0094] (Item 4) The threshing device 9 has a receiving net 18 provided along the outer periphery of the handling cylinder 21 and a mounting member 92 for mounting the receiving net 18. The upper structure 91 includes the mounting member 92, and the partition member 100 is fixed to the mounting member 92. The combine 1 according to item 3.
[0095] According to the combine 1 according to this item 4, since the partition member 100 is fixed to the mounting member 92 for mounting the receiving net 18 provided along the outer periphery of the handling cylinder 21, the partition member 100 can be disposed in the vicinity of the outer periphery of the handling cylinder 21.
[0096] (Item 5) The handling cylinder 21 includes a handling cylinder shaft 22, a cylinder body 23 supported by the handling cylinder shaft 22, and handling teeth 24 attached to the outer peripheral portion of the cylinder body 23. The partition member 100 is disposed at a position higher than the upper end of the cylinder body 23 of the handling cylinder 21. The combine 1 according to any one of Items 1 to 4 above.
[0097] According to the combine 1 according to this Item 5, since the partition member 100 is disposed at a position higher than the upper end of the cylinder body 23 of the handling cylinder 21, the partition member 100 can surely block the movement of the chaff fragments flipped upward by the rotation of the handling cylinder 21 toward the granary tank 10.
[0098] (Item 6) The first member 101 and the second member 102 are disposed overlapping in the vertical direction, and the first member 101 is located above the second member 102. The combine 1 according to any one of Items 1 to 5 above.
[0099] According to the combine 1 according to this Item 6, the first member 101 can be brought into close contact with the top plate 50 by elastic deformation, and the second member 102 having higher rigidity than the first member 101 can prevent excessive deformation of the partition member 100 downward.
[0100] (Item 7) The height of the first member 101 is lower than the height of the second member 102. The combine 1 according to Item 6 above.
[0101] According to the combine 1 according to this Item 7, since the ratio of the second member 102 in the height direction of the partition member 100 is larger than the ratio of the first member 101, excessive deformation of the partition member 100 downward can be more surely prevented.
[0102] (Item 8) The first member 101 has a length in the arrangement direction of the threshing device 9 and the granary tank 10 that is larger than the height. The combine 1 according to any one of Items 1 to 7 above.
[0103] According to the combine harvester 1 related to this item 8, the first member 101 stands stably and is less likely to fall. Therefore, it is possible to prevent the first member 101 from falling due to the impact of straw debris generated by threshing with the threshing cylinder 21 or the opening and closing operation of the top plate 50.
[0104] (Item 9) The first member 101 and the second member 102 are arranged side by side in the horizontal direction, and the height of the first member 101 is higher than the height of the second member 102. The combine harvester 1 according to any one of Items 1 to 5.
[0105] According to the combine harvester 1 related to this item 9, the first member 101 can be in close contact with the top plate 50 by elastically deforming when it abuts against the top plate 50. The second member 102 can prevent the first member 101 from falling by abutting against the side surface of the first member 101.
[0106] (Item 10) On the lower surface of the top plate 50, a protruding portion 55 that protrudes downward from the lower surface and extends in the arrangement direction of the threshing device 9 and the grain tank 10 is provided, and in the partition member 100, a recess 100a into which the protruding portion 55 is fitted is provided. The combine harvester 1 according to any one of Items 1 to 9.
[0107] According to the combine harvester 1 related to this item 10, when the top plate 50 is closed, it is possible to prevent the protruding portion 55 from resting on the partition member 100 and the top plate 50 from floating (not closing completely).
[0108] (Item 11) The recess 100a is provided in the first member 101. The combine harvester 1 according to Item 10.
[0109] According to the combine harvester 1 related to this item 11, it is possible to suppress the first member 101 from being excessively deformed when the protruding portion 55 hits the first member 101.
[0110] (Item 12) The depth of the recess 100a is equal to or greater than the height of the first member 101. The combine harvester 1 according to Item 11.
[0111] According to the combine harvester 1 related to this item 12, it is possible to prevent the first member 101 from being excessively deformed when the protruding portion 55 hits the first member 101.
[0112] As described above, the embodiments of the present invention have been described. However, it should be considered that all the disclosed embodiments are illustrative and not restrictive in all respects. The scope of the present invention is shown not by the above description but by the claims, and all modifications within the meaning and scope equivalent to the claims are intended to be included.
Explanation of reference numerals
[0113] 1 Combine harvester 8 Reaping part 9 Threshing device 10 Grain tank 14 Operator's cab 18 Receiving net 21 Operator's drum 22 Operator's drum shaft 23 Body 24 Operator's teeth 50 Top plate 55 Protruding portion 70 Wall plate 90 Wall structure 91 Upper structure 92 Mounting member 100 Partition member 100a Recess 101 First member 102 Second member
Claims
1. A cutting unit for cutting crops, A threshing device for threshing the crops cut by the cutting unit, A grain tank arranged side by side with the threshing device for storing the crops threshed by the threshing device, Comprising, The threshing device has a handling chamber into which crops are input from the cutting unit, a handling cylinder rotatably provided in the handling chamber for threshing the crops input into the handling chamber, and a top plate covering the upper part of the handling chamber. A partition member is arranged between the handling cylinder and the grain tank to prevent the straw debris generated by threshing by the handling cylinder from being discharged from the upper part of the handling chamber to the grain tank side. The combine harvester, wherein the partition member includes a first member that is elastically deformable and in close contact with the top plate, and a second member that is higher in rigidity than the first member and is arranged in contact with the first member.
2. Comprising a wall structure arranged between the handling cylinder and the grain tank, The combine harvester according to claim 1, wherein the partition member closes the space between the upper end of the wall structure and the top plate.
3. The wall structure includes a wall plate on the grain tank side of the threshing device and an upper structure arranged above the wall plate. The combine harvester according to claim 2, wherein the partition member closes the space between the upper structure and the top plate.
4. The threshing device has a receiving net provided along the outer periphery of the handling cylinder and a mounting member for mounting the receiving net. The upper structure includes the mounting member. The combine harvester according to claim 3, wherein the partition member is fixed to the mounting member.
5. The handling cylinder has a handling cylinder shaft, a cylinder body supported by the handling cylinder shaft, and handling teeth attached to the outer peripheral portion of the cylinder body. The combine harvester according to any one of claims 1 to 4, wherein the partition member is arranged at a position higher than the upper end of the cylinder body.
6. The first member and the second member are arranged overlapping in the vertical direction. The combine harvester according to any one of claims 1 to 4, wherein the first member is located above the second member.
7. The combine harvester according to claim 6, wherein the height of the first member is lower than the height of the second member.
8. The combine harvester according to any one of claims 1 to 4, wherein the first member has a length in the arrangement direction of the threshing device and the grain tank that is larger than the height.
9. The first member and the second member are arranged side by side in the horizontal direction. The combine according to any one of claims 1 to 4, wherein the height of the first member is higher than the height of the second member.
10. On the lower surface of the top plate, a protruding portion is provided that protrudes downward from the lower surface and extends in the arrangement direction of the threshing device and the grain tank. The combine according to any one of claims 1 to 4, wherein the partition member is provided with a recess into which the protruding portion fits.
11. The combine according to claim 10, wherein the recess is provided in the first member.
12. The combine according to claim 11, wherein the depth of the recess is equal to or greater than the height of the first member.
Citation Information
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