combine

Abstract

To provide a combine capable of preventing waste straw from being discharged to a grain tank side from the upper part of a threshing chamber of a thresher.SOLUTION: A combine 1 includes a reaping part 8 for reaping crops, a thresher 9 for subjecting the crops reaped by the reaping part 8 to threshing processing, and a grain tank 10 arranged alongside the thresher 9 for storing the crops threshed by the thresher 9. The thresher 9 includes a threshing chamber 14 to which the crops are fed from the reaping part 8, a threshing cylinder 21 provided rotatably in the threshing chamber 14 for threshing the crops fed to the threshing chamber 14, and a top plate 50 for covering a space above the threshing chamber 14. A partitioning member 100 is arranged between the threshing cylinder 21 and the grain tank 10 for preventing waste straw generated in the threshing by the threshing cylinder 21 from being discharged to a grain tank 10 side from the upper part of the threshing chamber 14. The partitioning member 100 includes a first member 101 that can be elastically deformed and comes in close contact with the top plate 50 and a second member 102 whose rigidity is higher than that of the first member 101, and which is arranged abutting against the first member 101.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a combine harvester provided with a threshing apparatus and a grain tank.

Background Art

[0002] Conventionally, the combine harvester disclosed in the following Patent Document 1 is known. The combine harvester disclosed in Patent Document 1 comprises: a reaping unit that reaps crops; a threshing apparatus that performs threshing processing on crops reaped by the reaping unit; and a grain tank that stores crops threshed by the threshing apparatus.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of Invention

Problem to be Solved by the Invention

[0004] The above combine harvester is provided with a cover extending between the threshing apparatus and the grain tank, thereby preventing straw debris from falling onto the exhaust pipe located between the threshing apparatus and the grain tank. However, no measures have been taken to prevent straw debris from being discharged toward the grain tank side from the upper part of the threshing chamber of the threshing apparatus. Therefore, straw debris discharged from the threshing chamber accumulates in the space between the threshing apparatus and the grain tank, which may reduce the maintainability of equipment and the like disposed between the threshing apparatus and the grain tank.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a combine harvester that can prevent straw debris from being discharged toward the grain tank side from the upper part of the threshing chamber of a threshing apparatus.

Means for Solving the Problem

[0006] A combine harvester according to one embodiment of the present invention comprises a harvesting unit for cutting crops, a threshing device for threshing the crops cut by the harvesting unit, and a grain tank arranged alongside the threshing device for storing the crops threshed by the threshing device. The threshing device includes a threshing chamber into which crops are fed from the harvesting unit, a threshing drum rotatably provided within the threshing chamber for threshing the crops fed into the threshing chamber, and a top plate covering the top of the threshing chamber. A partition member is provided between the threshing drum and the grain tank to prevent straw debris generated by threshing by the threshing drum from being discharged from the top of the threshing chamber towards the grain tank. 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 more rigid than the first member and is positioned in contact with the first member. [Effects of the Invention]

[0007] According to the combine harvester of the present invention, it is possible to prevent straw waste from being discharged from the upper part of the threshing chamber of the threshing device towards the grain tank. [Brief explanation of the drawing]

[0008] [Figure 1] This is a side view showing the overall configuration of a combine harvester. [Figure 2] This is a plan view showing the overall configuration of the combine harvester. [Figure 3] This is a longitudinal cross-sectional side view showing a threshing machine. [Figure 4] This is a longitudinal front view showing a portion of the grain tank and threshing equipment. [Figure 5] This is a side view of the space between the grain tank and the threshing machine, as seen from the grain tank side. [Figure 6] This is a longitudinal cross-sectional front view showing the grain tank, threshing equipment, etc. [Figure 7] This is a schematic front view showing the drum, top plate, wall structure, etc. [Figure 8] This is a front view showing the top panel in the open position. [Figure 9] This is a plan view showing the hoisting drum, partition members, mounting members, etc. [Figure 10]It is a diagram showing a state where the first cover is removed from the first connection body to open the first inspection opening. [Figure 11] It is a diagram showing a state where the second cover is removed from the second connection body to open the second inspection opening. [Figure 12] It is a front view showing a top plate, a partition member, a wall structure, and the like. [Figure 13] It is a perspective view showing a part of the wall structure. [Figure 14] It is a perspective view showing a mounting member, a receiving screen, a threshing cylinder, and a partition member. [Figure 15] It is a longitudinal front view for explaining a state where straw waste discharged from an upper part of a threshing chamber strikes the partition member. [Figure 16] It is a perspective view showing a mounting member, a partition member, and a cover member. [Figure 17] It is a side view of the top plate, the threshing cylinder, the partition member, the mounting member, and the like as viewed from the grain tank side. [Figure 18] It is a perspective view of the partition member. [Figure 19] It is a side view of the partition member. [Figure 20] It is a front view of the partition member. [Figure 21] It is a front view showing a state where the partition member is elastically deformed by the weight of the top plate. [Figure 22] It is a front view showing the top plate, the partition member, the protruding portion, and the like. [Figure 23] It is a side view showing the top plate, the partition member, the protruding portion, and the like. [Figure 24] It is a front view showing a first modified example of the partition member. [Figure 25] It is a front view showing a second modified example of the partition member. [Figure 26] It is a front view showing a third modified example of the partition member. [Figure 27] It is a front view showing a fourth modified example of the partition member. [Figure 28] It is a front view showing a fifth modified example of the partition member. [Figure 29] It is a side view showing a sixth modified example of the partition member. [Figure 30] This is a side view showing the seventh modified example of the partition member. [Figure 31] This is a side view showing the eighth example of modification of the partition member. [Figure 32] This is a front view showing the ninth modified example of the partition member. [Figure 33] This is a front view showing the tenth modified example of the partition member. [Figure 34] This is a front view showing the 11th modified example of the partition member. [Modes for carrying out the invention]

[0009] The following describes preferred embodiments of the combine harvester according to the present invention. The combine harvester 1 of this embodiment is a self-propelled combine harvester. Figures 1 and 2 show the overall configuration of the combine harvester 1. In this embodiment, the direction of travel of the combine harvester 1 in the working state is defined as forward. In Figures 1 and 2, the direction indicated by arrow F is forward, the direction indicated by arrow B is backward, the direction indicated by arrow L is to the left, and the direction indicated by arrow R is to the right.

[0010] The combine harvester 1 comprises a mobile body 2 having a machine frame 3 and a running gear 4. The running gear 4 is located below the machine frame 3. The running gear 4 consists of a pair of left and right crawler running gears. A cabin 5 is located at the front right of the mobile body 2. A driver's seat 6 is provided inside the cabin 5. An engine (not shown) is located below the driver's seat 6.

[0011] The combine harvester 1 comprises a harvesting unit 8 for cutting crops (planted grain stalks), a threshing device 9 for threshing the crops cut by the harvesting unit 8, and a grain tank 10 for storing the crops threshed by the threshing device 9. A grain discharge device 7 for discharging the grain from the grain tank 10 is connected to the top of the grain tank 10. The harvesting unit 8 is located 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 located behind the cabin 5. The threshing device 9 is located to the side (left) of the grain tank 10.

[0012] As shown in Figure 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 grips the harvested grain stalks conveyed from the harvesting section 8 and conveys them toward the rear, and a handling chamber 14 into which the crop is fed from the harvesting section 8. The sorting section 12 is located below the handling chamber 14. The sorting section 12 sorts the threshed material obtained from the threshing section 11 while conveying it. The conveying mechanism 13 is composed of a feed chain, etc.

[0013] As shown in Figures 3 and 4, the threshing chamber 14 is formed by partitions consisting of a front wall 15, a rear wall 16, an upper plate 17, a receiving net 18, and mounting members 92 (described later). An entrance 19 to the threshing chamber 14 is formed in the front wall 15. Below the entrance 19, a guide member 20 is provided to guide the ear end of the harvested stalks into the entrance 19. Inside the threshing chamber 14, a threshing cylinder 21 for threshing the crops fed into the threshing chamber 14 is rotatably installed.

[0014] The threshing drum 21 has a threshing drum shaft 22, a cylindrical body 23 supported by the threshing drum shaft 22, and threshing teeth 24 attached to the outer circumference of the body 23. The threshing drum shaft 22 extends in the front-rear direction and is rotatably supported by the front wall 15 and the rear wall 16. The threshing drum 21 rotates around the threshing drum shaft 22 in the direction indicated by arrow A1 in Figure 4 (the direction in which the threshing teeth 24 move from bottom to top on the grain tank 10 side), thereby threshing the ear end of the harvested grain stalks conveyed by the conveying mechanism 13.

[0015] The receiving net 18 is installed along the outer circumference of the lower part of the threshing drum 21. The receiving net 18 receives the threshed material that has been processed and fallen by the threshing drum 21. The receiving net 18 allows single grains and grains with stems attached to leak through the mesh toward the sorting section 12, while also receiving threshed grain stalks (discarded stalks) to prevent them from leaking into the sorting section 12. After the threshed material has been separated by the threshing drum 21, the discarded straw from the harvested grain stalks is discharged to the outside of the traveling machine body 2 by the discarded straw conveying mechanism 25.

[0016] As shown in Figure 3, the sorting unit 12 is equipped with an oscillating sorting device 30 and a winnowing machine 31. The oscillating sorting device 30 oscillates and sorts the threshed material supplied from the threshing unit 11 by conveying it towards the rear. The winnowing machine 31 supplies sorting air to the oscillating sorting device 30 to assist in sorting the threshed material. The winnowing machine 31 is located at the front of the sorting unit 12, and the sorting air supplied from the winnowing machine 31 flows towards the rear and upward.

[0017] The oscillating sorting device 30 is equipped with a sieve case 32. The sieve case 32 is equipped with 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 material that has leaked down from the front of the receiving screen 18 based on the difference in specific gravity and conveys it to the rear. The first sieve wire 34 loosens the threshed material sent from the grain pan 33 and supplies it to the chaff sieve 36.

[0018] The chaff sieve 36 screens and separates the threshed material that has leaked from the rear of the receiving screen 18 and the threshed material from the first sieve wire 34 while conveying them towards the rear. The second sieve wire 35 loosens the threshed material from the chaff sieve 36 and supplies it to the straw rack 37. The straw rack 37 screens and separates the threshed material from the second sieve wire 35 and the threshed material from the chaff sieve 36 while conveying them towards the rear. Any straw that does not leak down in the straw rack 37 is discharged to the outside of the traveling machine 2 through a dust outlet (not shown) located at the rear of the oscillating sorting device 30.

[0019] A dust removal fan 38 is provided behind the threshing drum 21 and above the straw rack 37. The dust removal fan 38 sucks in the stalks and other debris that have been transported by the sorting air from the winnowing machine 31 and discharges them to the outside of the traveling machine 2 through the dust removal port.

[0020] The sorting unit 12, with the configuration described above, sorts the threshed material from the threshing unit 11 into three categories: 1st grade (single grains), 2nd grade (forked grains, grains with attached stems, etc.), and 3rd grade (culm waste, torn culm, etc.). Of the sorted threshed material, the 1st and 2nd grades are collected by the recovery unit 40, which will be described later. The 3rd grade is discharged to the outside of the traveling machine 2.

[0021] As shown in Figure 3, the threshing apparatus 9 is equipped with a recovery unit 40 for recovering grains and other materials obtained by sorting by the sorting unit 12. The recovery unit 40 includes a first-grade recovery unit 41 for recovering first-grade materials and a second-grade recovery unit 42 for recovering second-grade materials. The first-grade recovery unit 41 is equipped with a first-grade screw 43. The first-grade screw 43 conveys the recovered first-grade materials to the right. The second-grade recovery unit 42 is equipped with a second-grade screw 44. The second-grade screw 44 conveys the recovered second-grade materials to the right.

[0022] As shown in Figures 3 and 5, the right end of the first screw 43 is connected to the first conveyor 45, which moves the first material conveyed by the first screw 43 upwards and transports it to the grain tank 10. The right end of the second screw 44 is connected to the second conveyor 46, which moves the second material conveyed by the second screw 44 upwards and returns it to the oscillating sorting device 30.

[0023] As shown in Figures 2 to 7, the threshing device 9 is equipped with a top plate 50 that covers the top of the threshing chamber 14. The top plate 50 constitutes an openable and closable top lid of the threshing device 9. The threshing device 9 is also equipped with a cylinder 60 for opening and closing the top plate 50 (see Figure 7). By extending the rod of the cylinder 60, the top plate 50 can be opened upwards (see arrow A2 in Figure 7). As the top plate 50 is opened, the threshing drum 21 rises together with the top plate 50.

[0024] As shown in Figures 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 positioned 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 Figures 7 and 8). The lower surface of the second plate 52 is provided with a projection 55 that protrudes downward from that lower surface. The projection 55 extends in the direction of alignment (left-right direction) between the threshing device 9 and the grain tank 10. The lower surface 55a of the projection 55 is inclined such that the amount of downward projection increases towards the right (towards the first plate 51). Multiple projections 55 are provided at intervals in the front-rear direction (two in this embodiment). The second plate 52 and the third plate 53 are not connected, and one end (upper end) of the cylinder 60 is connected to the lower part of the third plate 53.

[0026] When the rod of cylinder 60 is extended, the left side of the third plate 53 rises, and the upper surface of the third plate 53 moves downward and to the right along the lower surface of the second plate 52 (see arrow A3 in Figure 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. In other words, the protrusion 55 has the 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 the pivot point (see arrow A4 in Figure 8). As a result, the top plate 50 (second plate 52 and third plate 53) opens upward, and the hoisting cylinder 21 rises and is exposed in conjunction with the opening of the top plate 50 (second plate 52 and third plate 53).

[0027] As the hoisting drum 21 rises with the opening of the top plate 50, it rotates upward around the shaft 61 (see Figure 7, etc.) as a pivot point. As shown in Figures 5 and 9, the shaft 61 extends in the front-rear direction. A gear case 62 is attached to the front of the shaft 61. The rear of the shaft 61 is supported by the machine frame 3 via brackets, etc. The gear case 62 contains a gear mechanism (bevel gear mechanism) for transmitting rotational power transmitted from the engine to the first pulley 63 (see Figure 7).

[0028] The rotational power from the engine is transmitted to a power transmission mechanism 26 located in the lower part of the space S1 (see Figures 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 located in the lower part of space S1. The upper pulley 66 is located in the upper part of space S1. The belt 65 extends vertically in space S1 and is stretched between the lower pulley 64 and the upper pulley 66.

[0029] 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 belt 65. The central axis of the upper pulley 66 is connected to a first bevel gear housed in a gear case 62. The gear case 62 also houses a second bevel gear that meshes with the first bevel gear. The 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 and second bevel gears. As a result, the first pulley 63 rotates due to the rotational power transmitted from the engine. As shown in Figure 7, belt 65 is stretched across the first pulley 63 and the second pulley 67. The second pulley 67 is attached to the threshing drum shaft 22. As a result, the threshing drum 21 rotates in conjunction with the rotation of the first pulley 63.

[0030] As shown in Figures 5 and 6, a first conveyor 45 and a second conveyor 46 are arranged in the space S1 between the grain tank 10 and the threshing device 9. The first conveyor 45 and the second conveyor 46 extend vertically in 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 in the wall plate 70 on the grain tank 10 side of the threshing device 9. The second material conveyed by the second conveyor 46 is returned to the upper part of the chaff sieve 36 etc. inside the threshing device 9 via the guide chute 71.

[0031] As shown in Figure 5, a first connecting body 72 is provided at the bottom of the first conveyor 45, connecting the first conveyor 45 to the first material collection unit 41. A second connecting body 73 is provided at the bottom of the second conveyor 46, connecting the second conveyor 46 to the second material collection unit 42. The first connecting body 72 and the second connecting body 73 are located at the bottom of the space S1 between the grain tank 10 and the threshing device 9.

[0032] As shown in Figure 10, the first connecting body 72 is provided with a first inspection opening 74. The first inspection opening 74 is covered by a removable first cover 75. By removing the first cover 75, the first inspection opening 74 can be opened. By opening the first inspection opening 74, the first conveyor 45 and the first screw 43 can be inspected.

[0033] As shown in Figure 11, the second connector 73 is provided with a second inspection opening 76. The second inspection opening 76 is covered by a removable second cover 77. By removing the second cover 77, the second inspection opening 76 can be opened. By opening the second inspection opening 76, the second conveyor 46 and the second screw 44 can be inspected.

[0034] As shown in Figures 5 and 6, an exhaust pipe 80 is located in the space S1 between the grain tank 10 and the threshing device 9 to discharge the engine exhaust after it has been purified by an exhaust purification device (not shown). The lower part of the grain tank 10 has a sloping surface 10a that slopes downwards and to the right. The exhaust pipe 80 is located below this sloping surface 10a. As a result, the entire or nearly entire exhaust pipe 80 is located to the left of the left side (the side facing the threshing device 9) 10b of the grain tank 10 (see Figure 6). Therefore, the upper part of the exhaust pipe 80 is generally covered by the grain tank 10. The upper part of the exhaust pipe 80 is also covered by a cover 82.

[0035] As shown in Figure 6, the exhaust pipe 80 extends from front to rear within space S1. As shown in Figure 5, the exhaust port 81 at the rear end of the exhaust pipe 80 opens diagonally downward to the right. The exhaust port 81 is located above the right-side crawler track. The exhaust from the exhaust port 81 is discharged to the rear of the right-side crawler track.

[0036] As shown in Figure 5, the exhaust pipe 80 extends from front to rear in the space S1 between the grain tank 10 and the threshing device 9. The exhaust pipe 80 is positioned to cross to the right of the first conveyor 45 and the second conveyor 46. The exhaust pipe 80 is positioned above the height of the first connector 72. Therefore, the exhaust pipe 80 is positioned above the height of the first inspection opening 74. Furthermore, the exhaust pipe 80 is positioned at a height that coincides with the vertical position of the second connector 73, and at a height that coincides with the vertical position of the second inspection opening 76.

[0037] The exhaust pipe 80 is provided in a position that can be changed within space S1. Specifically, the exhaust pipe 80 is provided in a removable position within space S1. By changing the position of the exhaust pipe 80 (by removing the exhaust pipe 80), access to the first inspection port 74 and the second inspection port 76 becomes easier. This makes it easier to open the first inspection port 74 and the second inspection port 76 and perform maintenance.

[0038] As shown in Figures 4 and 6, a wall structure 90 is positioned between the threshing drum 21 and the grain tank 10. As shown in Figures 6, 12, and 13, the wall structure 90 includes a wall plate 70 on the grain tank 10 side of the threshing apparatus 9 and an upper structure 91 positioned above the wall plate 70. The wall plate 70 is positioned with one side facing left (towards the threshing drum 21) and the other side facing right (towards the grain tank 10).

[0039] The superstructure 91 includes mounting members 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 Figures 4, 14, and 15, the mounting members 92 are positioned above the receiving net 18, along the perimeter of the threshing drum 21. The mounting members 92 are positioned on the grain tank 10 side of the threshing drum 21.

[0040] As shown in Figures 13 to 17, 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 arranged along the circumference of the threshing drum 21. The mesh plate 93 is positioned 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. Straw shavings generated by the threshing process performed as the threshing drum 21 rotates can pass through the openings (mesh) of the mesh plate 93 (see arrow A5 in Figure 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 Figure 9, the first side plate 941 is attached to a first bracket 96 mounted on the front of the shaft 61. The second side plate 942 is attached to a second bracket 97 mounted on the rear of the shaft 61. As described above, the hoisting cylinder 21 rotates around the shaft 61, but the mounting member 92 does not move relative to the shaft 61. In other words, the position of the mounting member 92 is fixed.

[0042] The support plate 95 is a plate that supports the partition member 100, which will be described later. As shown in Figure 13, 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 Figure 15, 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 Figures 12, 15, and 16, a cover plate 98 is positioned below the horizontal section 95b. The cover plate 98 constitutes part of the upper structure 91 of the wall structure 90. The cover plate 98 consists of a first cover plate 981 and a second cover plate 982. The first cover plate 981 and the second cover plate 982 are positioned adjacent to each other in the front-rear direction. A gear case 62 is attached to the first cover plate 981 (see Figures 12, 13, and 15).

[0044] The cover plate 98 (first cover plate 981, 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 surface 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 to the right from the lower end of the second portion 98b. The fourth portion 98d extends to the right from the lower right 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 grain tank 10 side of the threshing device 9. As a result, the cover plate 98 is fixed to the upper part of the wall plate 70.

[0045] As shown in Figure 15, the cover plate 98 is positioned to the right of the mesh plate 93 with a gap in between. The cover plate 98 is positioned to the right of the mesh plate 93 and covers the mesh plate 93. As shown in Figure 9, the width (length in the front-to-back direction) of the cover plate 98 is set to be greater than or equal to the width (length in the front-to-back direction) of the threshing drum 21. The front end of the cover plate 98 is located in front of the front end of the body 23 of the threshing drum 21 in the front-to-back direction. The rear end of the cover plate 98 is located in front of the rear end of the body 23 in the front-to-back direction. The cover plate 98 prevents some of the straw debris generated by threshing as the threshing drum 21 rotates and passing through the opening (mesh) of the mesh plate 93 from moving towards the grain tank 10.

[0046] As shown in Figures 4 and 6, a partition member 100 is positioned between the threshing drum 21 and the grain tank 10. The partition member 100 prevents straw shavings generated by threshing with the threshing drum 21 from being discharged from the top of the threshing chamber 14 towards the grain tank 10. As shown in Figures 12 and 15, the partition member 100 closes the space between the upper end of the wall structure 90 and the top plate 50. More 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.

[0047] The partition member 100, together with the wall structure 90, partitions the space between the threshing drum 21 and the grain tank 10, thereby preventing the straw shavings generated by the threshing drum 21 from being discharged from the top of the threshing chamber 14 towards the grain tank 10.

[0048] As shown in Figures 9 and 17, the partition member 100 extends in the front-rear direction. The extension direction of the partition member 100 is parallel to the rotation axis direction of the threshing drum 21 (extension direction of the threshing drum shaft 22). The front-rear position of the partition member 100 overlaps with the front-rear position of the threshing drum 21. The width (length in the front-rear direction) of the partition member 100 is set to be greater than or equal to the width (length in the front-rear direction) of the body 23 of the threshing drum 21. The front end of the partition member 100 is located in front of the front end of the body 23 in the front-rear direction. The rear end of the partition member 100 is located in front of the rear end of the body 23 in the front-rear direction. In other words, the front-rear position of the partition member 100 overlaps with that of the threshing drum 21 along its entire length in the front-rear direction.

[0049] As shown in Figures 9 and 17, the front-to-back position of the partition member 100 overlaps with the front-to-back positions of the mounting member 92 and the cover plate 98. The width (front-to-back length) of the partition member 100 is set to be greater than or equal to the width (front-to-back length) of the mounting member 92 and the cover plate 98. The front-to-back positions of the mounting member 92 and the cover plate 98 overlap with those of the partition member 100 over their entire length in the front-to-back direction.

[0050] As shown in Figures 4 and 7, the partition member 100 is positioned higher than the upper end of the body 23 of the threshing drum 21. The upper end of the partition member 100 is higher than the upper end of the threshing drum 21. The lower end of the partition member 100 is at the same height as the threshing drum 21 in the vertical direction. Also, the lower end of the partition member 100 is higher than the shaft 61. The partition member 100 is positioned to the left of the wall plate 70 on the grain tank 10 side of the threshing device 9. The left end of the partition member 100 is located to the left of the right end of the threshing drum 21. The left-right position of the partition member 100 coincides with the left-right position of the receiving net 18 of the threshing device 9. In other words, the left end of the partition member 100 is located to the left of the right end of the receiving net 18.

[0051] As shown in Figures 14 to 16, the partition member 100 is fixed to the mounting member 92. More specifically, the partition member 100 is fixed to the support plate 95 of the mounting 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, double-sided adhesive tape. By using double-sided adhesive tape having adhesive layers on both sides of the base material, cushioning can be provided at the adhesive portion (boundary portion) between the partition member 100 and the mounting member 92. However, the method of fixing the partition member 100 is not particularly limited, and it may be fixed by, for example, adhesive.

[0052] Figures 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 an elastically deformable member. The second member 102 is a member with higher rigidity than the first member 101. It is preferable that the second member 102 is an elastically deformable member, but it may also be an elastically indeformable member. If the second member 102 is an elastically deformable member, the amount of elastic deformation under the same load is smaller than that of the first member 101. In other words, the elastic modulus of the second member 102 is greater than that of the first member 101.

[0053] For example, the first member 101 can be a closed-cell foam (low-hardness rubber sponge) mainly composed of chloroprene rubber. For example, the second member 102 can be foamed urethane. However, the materials of the first member 101 and the second member 102 are not limited to these. For example, the first member 101 and the second member 102 can be made of the same foam material, and the foaming ratio of the first member 101 can be made greater than that of the second member 102, thereby increasing the rigidity of the second member 102 compared to the rigidity of the first member 101.

[0054] The first member 101 has a function (sealing function) for ensuring sealing performance to close the gap between the upper end of the wall structure 90 and the top plate 50. The second member 102 has a function (shape-retaining function) for preventing excessive deformation of the partition member 100. Since the first member 101 is an elastically deformable member, it can exert the 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 with higher rigidity than the first member 101, it is less deformable 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 a case where the partition member 100 is formed only of the first member 101, and the shape-retaining function of the partition member 100 can be exerted.

[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 deforms. That is, for the first member 101, the height H1b when the top plate 50 is closed (placed thereon) is smaller than the height H1a when the top plate 50 is open (not placed thereon) (H1b<H1a). The occurrence of such elastic deformation allows the first member 101 to be in close contact with the top plate 50. In addition, since the first member 101 is compressed by the weight of the top plate 50 and elastically deforms, when the top plate 50 is closed, it is possible to prevent the top plate 50 from resting on the partition member 100 and being unable to close completely (the top plate 50 floating).

[0056] The second member 102 is disposed in contact with the first member 101. The first member 101 and the second member 102 are bonded to each other. However, the first member 101 and the second member 102 do not need to be bonded. In the case of the present embodiment, the first member 101 and the second member 102 are disposed overlapping each other in the vertical direction. The first member 101 is located above the second member 102. Therefore, although the first member 101 is in contact (close contact) with the top plate 50, 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 is in contact with the top plate 50 and the second member 102 that is not in contact with 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 is not elastically deformed. That is, for the second member 102, the height H2b 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, when the first member 101 is elastically deformed by the weight of the top plate 50, the second member 102 may be elastically deformed by a smaller amount than the first member 101.

[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. By setting the height H2 of the second member 102, which has higher rigidity than the first member 101, to be higher than the height H1 of the first member 101 in this manner, excessive deformation (compressive deformation) of the partition member 100 caused by the weight of the top plate 50 can be prevented.

[0059] As shown in FIG. 20, for the first member 101, the length W1 in the left-right direction (the length in the arrangement direction of the threshing device 9 and the grain tank 10) is larger than the height H1 (W1>H1). This allows the first member 101 to stand stably and is less likely to topple over. Therefore, the first member 101 can be prevented from toppling toward the grain tank 10 side or the opposite side due to the collision of straw scraps generated during threshing by the threshing cylinder 21 and 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). In other words, the width W2 of the second member 102 is preferably set to be not less than the width W1 of the first member 101 (W1≦W2). By this setting, the entire lower surface of the first member 101 can be bonded to the upper surface of the second member 102, so that the first member 101 and the second member 102 are firmly integrated, and the first member 101 is less likely to detach from the second member 102.

[0061] As shown in Figure 18, etc., 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 the part into which the projection 55 provided on the top plate 50 is fitted. Therefore, the recess 100a is provided in a position corresponding to the projection 55. In this embodiment, since there are two projections 55 spaced apart in the front-rear direction, the recess 100a is provided in two locations corresponding to the projections 55. By providing the recess 100a in the partition member 100, it is possible to prevent the projection 55 from resting on the partition member 100 and causing the top plate 50 to float (not close completely) when the top plate 50 is closed.

[0062] The recess 100a is provided in the first member 101. The depth of the recess 100a is greater than or equal to the height of the first member 101. That is, the depth of the recess 100a is equal to or greater than the height of the first member 101. If the depth of the recess 100a is equal to the height of the first member 101, the recess 100a is provided only in the first member 101. If 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 extend to the lower end of the second member 102.

[0063] The depth of the recess 100a is set to match 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, and the partition member 100 is not pressed and deformed by the protrusion 55. However, due to manufacturing or assembly errors 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 part of the second member 102 that contacts the protrusion 55 (the part that is pressed) deforms downward. This deformation of the second member 102 allows the error to be absorbed.

[0064] As shown in Figure 22, the lower surface 55a of the protrusion 55 is inclined such that the amount of downward protrusion increases as it moves to the right. In the range where the partition member 100 and the protrusion 55 overlap in the left-right direction, at position P1 where the lower surface 55a of the protrusion 55 is at its highest, the height of the lower surface 55a of the protrusion 55 and the height of the upper end of the second member 102 are the same (or approximately the same). On the other hand, in the range where the partition member 100 and the protrusion 55 overlap in the left-right direction, at position P2 to the right of position P1 where the lower surface 55a of the protrusion 55 is at its highest, the height of the lower surface 55a of the protrusion 55 is lower than the height of the upper end of the second member 102. Therefore, if the depth of the recess 100a is the same as the height of the protrusion 55 at position P1, at position P2, the second member 102 will hit the protrusion 55 and be pushed downward. 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 that is pressed) deforms by being indented downward (see the enlarged circled view in Figure 23). This deformation of the second member 102 can absorb the inclination of the protrusion 55.

[0065] As shown in Figure 23, the width W3, which is the length of the recess 100a in the front-rear direction, is greater than the width W4, which is the length of the protrusion 55 in the front-rear direction (W3 > W4). As a result, the gap (clearance) between the recess 100a and the protrusion 55 can absorb mounting errors in the front-rear position of the protrusion 55. Therefore, the protrusion 55 can be completely housed within the recess 100a in the front-rear direction. Because the protrusion 55 is housed within the recess 100a, the protrusion 55 is sandwiched between the partition member 100 from the front and rear, thus stabilizing the positional relationship between the protrusion 55 and the partition member 100.

[0066] As described above, the depth of the recess 100a is greater than or equal to the height of the first member 101. Therefore, as shown in Figures 18 and 19, the first member 101 is divided into multiple members by the recess 100a. In 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 into four or more by three or more recesses 100a. The number of recesses 100a is set to a number corresponding to the number of protrusions 55, so the number of divisions of the first member 101 is determined in accordance with the number of protrusions 55.

[0067] Here, with reference to Figure 15, the function of the partition member 100 will be explained in detail. When the threshing drum 21 rotates and threshing is performed, the straw shavings generated by the threshing are thrown upward as the threshing drum 21 rotates. The straw shavings are also carried upward by the sorting air generated by the rotation of the winnowing machine 31. As a result, the straw shavings move upward through the opening (mesh) of the mesh plate 93 of the mounting member 92, and some of them head towards the space between the wall structure 90 and the top plate 50 (see arrow A5 in Figure 15). However, since the space between the wall structure 90 and the top plate 50 is blocked by the partition member 100, the straw shavings cannot move towards the grain tank 10 by passing through the space between the wall structure 90 and the top plate 50. In other words, the movement of the straw shavings towards the grain tank 10 is blocked by the partition member 100. The straw waste, whose movement toward the grain tank 10 is blocked by the partition member 100, falls back into the handling chamber 14 and is therefore not discharged toward the grain tank 10.

[0068] Through the actions described above, the partition member 100 prevents the straw shavings generated by threshing with the threshing drum 21 from being discharged from the top of the threshing chamber 14 towards the grain tank 10. More specifically, the partition member 100 prevents the straw shavings generated by threshing with the threshing drum 21 from being discharged from the top of the threshing chamber 14 into the space S1 between the threshing device 9 and the grain tank 10.

[0069] As described above, the partition member 100 is positioned higher than the upper end of the body 23 of the threshing drum 21 and to the left of the wall plate 70 on the grain tank 10 side of the threshing device 9. Furthermore, the left end of the partition member 100 is positioned to the left of the right end of the threshing drum 21. As a result, the partition member 100 can prevent the discharge of straw debris, which is thrown upward by the rotation of the threshing drum 21, towards the grain tank 10 in the vicinity of the threshing chamber 14. Therefore, compared to the case where the partition member 100 is positioned in another location (for example, inside space S1), it is possible to reliably and easily prevent the discharge of straw debris towards the grain tank 10.

[0070] If the partition member 100 is absent, the straw shavings generated by threshing with the threshing drum 21 are discharged from the top of the threshing chamber 14 into space S1, causing the straw shavings to accumulate above or near the objects placed in space S1. Therefore, when maintaining the objects, the accumulated straw shavings must be removed, making maintenance time-consuming. However, if the partition member 100 is present, the accumulation of straw shavings above or near the objects placed in space S1 is prevented, thus reducing the effort required for maintenance.

[0071] As described above, the space S1 between the threshing device 9 and the grain tank 10 contains the exhaust pipe 80, the first conveyor 45, the second conveyor 46, and the like. When straw debris accumulates near the bottom of the first conveyor 45 and the second conveyor 46 located in space S1, part or all of the first lid 75 and the second lid 77 are covered with straw debris. Therefore, when removing the first lid 75 and the second lid 77 and opening the first inspection port 74 and the second inspection port 76 for maintenance (inspection, etc.), it is time-consuming to remove the straw debris covering the first lid 75 and the second lid 77. However, with the partition member 100 in place, the first lid 75 and the second lid 77 are no longer covered with straw debris. Therefore, the time and effort required to remove the straw debris covering the first lid 75 and the second lid 77 is eliminated, and maintenance effort is reduced.

[0072] Furthermore, space S1 also contains a compressor 110 that constitutes part of an air conditioning unit (not shown), a clutch mechanism 111 including a threshing clutch and a harvesting clutch, and a power transmission mechanism 26 for transmitting engine rotational power to the threshing drum 21 (see Figures 5 and 6). When straw debris is discharged into space S1, it adheres to these mechanisms and devices, requiring extra effort to remove the attached straw debris during maintenance. However, by preventing straw debris from being discharged into space S1 with the partition member 100, it is possible to prevent straw debris from adhering to the mechanisms and devices located within space S1, thereby reducing the effort required for maintenance.

[0073] Figure 24 shows a first modified example of the partition member 100. In the first modified example of the partition member 100, the first member 101 and the second member 102 are arranged horizontally side by side. More 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 located to the right of the first member 101 (towards the grain tank 10). The height of the first member 101 is greater than the height of the second member 102.

[0074] In the first modified example, the partition member 100 has a first member 101 that abuts against the top plate 50, while the second member 102 does not abut against the top plate 50. The first member 101 can be made to fit closely to the top plate 50 by elastically deforming upon contact with the top plate 50. The second member 102 abuts against the side (right side) of the first member 101, thereby preventing the first member 101 from tipping over.

[0075] Figure 25 shows a second modified example of the partition member 100. When the first member 101 and the second member 102 are arranged side by side horizontally (left and right), the arrangement of the first member 101 and the second member 102 may be reversed from that of the first modified example, as shown in Figure 25. That is, the second member 102 may be placed to the left of the first member 101 (opposite side from the grain tank 10). In the case of the partition member 100 of the second modified example, the partition member 100 can stand upright stably by bonding the first member 101 and the second member 102 together, thereby preventing the first member 101 from falling over.

[0076] Figure 26 shows a third modified example of the partition member 100. When the first member 101 and the second member 102 are arranged side by side horizontally (left and right), the first member 101 may be placed between the two second members 102, as shown in Figure 26. The height of the first member 101 is greater than the height of the two second members 102. In the case of the partition member 100 of the third modified example, it is possible to more reliably prevent the first member 101 from falling over.

[0077] Figure 27 shows a fourth modified example of the partition member 100. As shown in Figure 27, the partition member 100 may be made up of three or more members stacked vertically. The partition member 100 of the fourth modified example includes a third member 103 in addition to the first member 101 and the second member 102, with the first member 101, the second member 102, and the third member 103 stacked vertically. The third member 103 is positioned 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 modified example, the rigidity (resistance to deformation) of the partition member 100 changes in steps vertically, which prevents stress from concentrating in a part of the partition member 100.

[0078] Figure 28 shows a fifth modified example of the partition member 100. The partition member 100 in the fifth modified example is the same as shown in Figure 20 in that the first member 101 and the second member 102 are arranged to overlap in the vertical direction, but it differs in that the interface 100b between the first member 101 and the second member 102 is inclined. The interface 100b, which is the bonding surface between the first member 101 and the second member 102, is inclined with respect to the horizontal direction. More specifically, the interface 100b between the first member 101 and the second member 102 moves upward from the left side toward the right side (grain tank 10 side). In the case of the partition member 100 in the fifth modified example, the bonding area between the first member 101 and the second member 102 can be increased, so the first member 101 and the second member 102 can be firmly integrated. In addition, the first member 101 can be made less likely to tip to the right side (grain tank 10 side).

[0079] Figure 29 shows a sixth modified example of the partition member 100. In the sixth modified example of the partition member 100, the depth of the recess 100a is smaller than the height of the first member 101. Therefore, the first member 101 is not divided by the recess 100a but remains a single continuous member. In the case of the sixth modified example of the partition member 100, 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 seventh modified example of the partition member 100, the first member 101 and the second member 102 are arranged side by side in the longitudinal direction (front-to-back direction) of the partition member 100. The first member 101 is sandwiched between the second member 102 from both the front and back sides. The first member 101 includes the portion with the recess 100a, while the second member 102 does not include the portion with the recess 100a. In the case of the seventh modified example of the partition member 100, 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 eighth modified example of the partition member 100, the first member 101 and the second member 102 are arranged to overlap in the vertical direction, but the recess 100a is not provided. Therefore, the upper surface of the first member 101 is formed as a flat surface. The eighth modified example of the partition member 100 can be used when the top plate 50 does not have a protrusion 55, or when the partition member 100 and the protrusion 55 are in a position where they do not interfere with each other.

[0082] Figure 32 shows the ninth modified example of the partition member 100. In the ninth modified example, the partition member 100 has a trapezoidal shape when viewed from the front or rear. In a trapezoid, the bottom edge is larger than the top edge. Both the first member 101 and the second member 102 have trapezoidal shapes when viewed from the front or rear. The bottom edge of the trapezoid of the first member 101 and the top edge of the trapezoid of the second member 102 are glued together. The length of the bottom edge of the trapezoid of the first member 101 and the length of the top edge of the trapezoid of the second member 102 are the same. In the case of the partition member 100 of the ninth modified example, because the bottom edge of the partition member 100 is larger than the top edge, the partition member 100 becomes more stable and less likely to tip over.

[0083] Figure 33 shows the tenth modified example of the partition member 100. In the tenth modified example of the partition member 100, the upper, left, and right sides of the second member 102 are covered by the first member 101. Therefore, the top, left, and right surfaces of the partition member 100 are made of the first member 101. The bottom surface of the partition member 100 is made of the first member 101 and the second member 102. In the case of the tenth modified example of the partition member 100, the second member 102 acts as a core material located inside the first member 101, which can suppress excessive deformation of the partition member 100.

[0084] Figure 34 shows the 11th modified example of the partition member 100. In the 11th modified example of the partition member 100, the upper, lower, left, and right sides of the second member 102 are covered by the first member 101. Therefore, the top, bottom, left, and right surfaces of the partition member 100 are made of the first member 101. In the case of the partition member 100 of the 11th modified example, the second member 102 acts as a core material located inside the first member 101, which can suppress excessive deformation of the partition member 100. In addition, since the periphery of the first member 101 is surrounded by the second member 102, separation of the first member 101 and the second member 102 can be prevented.

[0085] Although several examples of the shape of the partition member 100 have been illustrated and explained above, the shape of the partition member 100 is not limited to the illustrated shapes and may be other shapes.

[0086] Furthermore, regarding the arrangement of the partition member 100, in the embodiment described above, the partition member 100 was fixed to the mounting member 92, but it may be fixed to other parts. For example, the partition member 100 may be fixed to the cover plate 98. Alternatively, the partition member 100 may be attached to the underside of the top plate 50. In other words, the partition member 100 may be fixed to a part other than the mounting member 92, as long as it can close the gap between the wall structure 90 and the top plate 50 when the top plate 50 is closed.

[0087] A preferred embodiment of the present invention provides a combine harvester 1 as described in the following section.

[0088] (Item 1) The system comprises 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 alongside the threshing device 9 for storing the crops threshed by the threshing device 9. The threshing device 9 includes a threshing chamber 14 into which crops are fed from the cutting unit 8, a threshing drum 21 rotatably installed within the threshing chamber 14 for threshing the crops fed into the threshing chamber 14, and a top plate 50 covering the top of the threshing chamber 14. A combine harvester 1 is provided, wherein a partition member 100 is positioned between the threshing drum 21 and the grain tank 10 to prevent straw shavings generated by threshing by the threshing drum 21 from being discharged from the top of the threshing chamber 14 towards the grain tank 10, and 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 positioned in contact with the first member 101.

[0089] According to the combine harvester 1 described in item 1, it is possible to prevent straw waste from being discharged from the top of the threshing chamber 14 of the threshing device 9 towards the grain tank 10. More specifically, a partition member 100 is positioned between the threshing drum 21 and the grain tank 10 to prevent straw waste generated by threshing by the threshing drum 21 from being discharged from the top of the threshing chamber 14 towards the grain tank 10. More specifically, the first member 101 is in close contact with the top plate 50, which prevents straw waste from being discharged from the top of the threshing chamber 14 through the vicinity of the top plate 50. Furthermore, the second member 102, which has higher rigidity than the first member 101, is positioned in contact with the first member 101, which prevents the partition member 100 from deforming excessively. The sealing function of the first member 101 and the shape-retaining function of the second member 102 work together to reliably prevent the straw waste from being discharged from the top of the handling chamber 14 towards the grain tank 10, as achieved by the partition member 100.

[0090] (Item 2) The combine harvester 1 according to Item 1, comprising a wall structure 90 positioned between the threshing drum 21 and the grain tank 10, wherein 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 harvester 1 relating to item 2, it is possible to prevent the straw waste generated by threshing with the threshing drum 21 from being discharged to the grain tank 10 side by passing between the upper end of the wall structure 90, which is positioned between the threshing drum 21 and the grain tank 10, and the top plate 50.

[0092] (Item 3) The combine harvester 1 according to Item 2, wherein 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 positioned above the wall plate 70, and the partition member 100 closes the space between the upper structure 91 and the top plate 50.

[0093] According to the combine harvester 1 relating to item 3, it is possible to prevent the straw shavings generated by threshing with the threshing drum 21 from being discharged to the grain tank 10 side by passing between the upper structure 91, which is positioned above the wall structure 90, and the top plate 50.

[0094] (Item 4) The combine harvester 1 according to Item 3, wherein the threshing device 9 has a receiving net 18 provided along the outer circumference of the threshing drum 21 and a mounting member 92 for attaching 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.

[0095] According to the combine harvester 1 relating to item 4, the partition member 100 is fixed to a mounting member 92 for attaching a receiving net 18 provided along the outer circumference of the threshing drum 21, so the partition member 100 can be positioned near the outer circumference of the threshing drum 21.

[0096] (Item 5) The combine harvester 1 according to any one of Items 1 to 4, wherein the threshing drum 21 has a threshing drum shaft 22, a body 23 supported by the threshing drum shaft 22, and threshing teeth 24 attached to the outer circumference of the body 23, and the partition member 100 is positioned higher than the upper end of the body 23.

[0097] According to the combine harvester 1 relating to item 5, since the partition member 100 is positioned higher than the upper end of the body 23 of the threshing drum 21, the partition member 100 can reliably block the movement of the straw debris, which is thrown upward by the rotation of the threshing drum 21, toward the grain tank 10.

[0098] (Item 6) The combine harvester 1 according to any one of items 1 to 5, wherein the first member 101 and the second member 102 are arranged to overlap in the vertical direction, and the first member 101 is located above the second member 102.

[0099] According to the combine harvester 1 relating to 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, which has higher rigidity than the first member 101, can prevent excessive downward deformation of the partition member 100.

[0100] (Item 7) The combine harvester 1 according to Item 6, wherein the height of the first member 101 is lower than the height of the second member 102.

[0101] According to the combine harvester 1 relating to item 7, the proportion of the second member 102 to the height of the partition member 100 is greater than the proportion of the first member 101, thus making it possible to more reliably prevent excessive downward deformation of the partition member 100.

[0102] (Item 8) The first member 101 is a combine harvester 1 according to any one of Items 1 to 7, wherein the length in the direction of alignment between the threshing device 9 and the grain tank 10 is greater than the height.

[0103] According to the combine harvester 1 described in item 8, the first member 101 stands upright stably and is less likely to fall over. Therefore, it is possible to prevent the first member 101 from falling over due to collisions with straw debris generated during threshing by the threshing drum 21 or due to the opening and closing operation of the top plate 50.

[0104] (Item 9) The combine harvester 1 according to any one of Items 1 to 5, wherein 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 greater than the height of the second member 102.

[0105] According to the combine harvester 1 described in item 9, the first member 101 can be brought into close contact with the top plate 50 by elastically deforming upon contact with the top plate 50. The second member 102 can prevent the first member 101 from falling over by coming into contact with the side surface of the first member 101.

[0106] (Item 10) The combine harvester 1 according to any one of items 1 to 9, wherein the lower surface of the top plate 50 is provided with a projection 55 that protrudes downward from the lower surface and extends in the direction in which the threshing device 9 and the grain tank 10 are aligned, and the partition member 100 is provided with a recess 100a into which the projection 55 is fitted.

[0107] According to the combine harvester 1 related to item 10, when the top plate 50 is closed, the protruding part 55 rests on the partition member 100, preventing 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 as described in Item 10.

[0109] According to the combine harvester 1 relating to item 11, the protruding portion 55 can prevent the first member 101 from deforming excessively due to contact with the first member 101.

[0110] (Item 12) The combine harvester 1 according to Item 11, wherein the depth of the recess 100a is greater than or equal to the height of the first member 101.

[0111] According to the combine harvester 1 relating to item 12, the protruding portion 55 can contact the first member 101, thereby preventing the first member 101 from being excessively deformed.

[0112] While embodiments of the present invention have been described above, the embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope of equivalence to the claims are intended to be included. [Explanation of symbols]

[0113] 1 combine harvester 8 Reaping part 9. Threshing machine 10 Glen Tank 14 Handling room 18 Receiving net 21. 22. Shaft 23 Torso 24 teeth 50 Top plate 55 Protrusion 70 wall board 90 Wall structure 91 Superstructure 92 Mounting components 100 Partition Members 100a recess 101 First Member 102 Second Member

Claims

1. The harvesting section for cutting crops, A threshing device for threshing crops harvested by the aforementioned harvesting unit, A grain tank is arranged alongside the threshing apparatus and stores the crops that have been threshed by the threshing apparatus. Equipped with, The threshing apparatus comprises a threshing chamber into which crops are fed from the harvesting section, a threshing cylinder rotatably mounted within the threshing chamber for threshing the crops fed into the threshing chamber, and a top plate covering the top of the threshing chamber. A partition member is placed between the threshing drum and the grain tank to prevent the straw shavings generated by the threshing drum from being discharged from the top of the threshing chamber towards the grain tank. The partition member of the combine harvester includes a first member that is elastically deformable and in close contact with the top plate, and a second member that is more rigid than the first member and is positioned in contact with the first member.

2. The wall structure is provided between the threshing drum 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 apparatus and an upper structure positioned 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 apparatus includes a receiving net provided along the outer circumference of the threshing drum and a mounting member for attaching the receiving net. The aforementioned 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 aforementioned threshold comprises a threshold shaft, a body supported by the threshold shaft, and threshold teeth attached to the outer circumference of the body. The combine harvester according to any one of claims 1 to 4, wherein the partition member is positioned higher than the upper end of the body.

6. The first member and the second member are arranged to overlap 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 first member is a combine harvester according to any one of claims 1 to 4, wherein the length in the direction in which the threshing device and the grain tank are aligned is greater than the height.

9. The first member and the second member are arranged side by side in the horizontal direction. The combine harvester according to any one of claims 1 to 4, wherein the height of the first member is greater than the height of the second member.

10. The lower surface of the top plate is provided with a projection that protrudes downward from the lower surface and extends in the direction in which the threshing device and the grain tank are aligned. The combine harvester according to any one of claims 1 to 4, wherein the partition member is provided with a recess into which the protruding portion is fitted.

11. The combine harvester according to claim 10, wherein the recess is provided in the first member.

12. The combine harvester according to claim 11, wherein the depth of the recess is greater than or equal to the height of the first member.

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