Combine harvester

Abstract

To reduce a state in which crops conveyed forward from the rear end part of a conveying device along the top plate part of the conveying device are moved forward from the upper part of the inlet part of the conveying device and wound around a horizontal feed auger in a combine harvester.SOLUTION: This combine harvester is equipped with a reaping part having a lateral feed auger 15 rotatably driven around an axial center P2 along the lateral direction and a conveying device having an inlet part 31 attached to a rear wall part 10 of the reaping part. The lateral feed auger 15 is rotationally driven in a direction from the lower portion of the inlet portion 31 toward the upper portion of the inlet portion 31 in a side view. The conveying device has a conveying body 36 rotationally driven so as to move backward along a bottom part 27 of the conveying device and move forward along a top plate part 30 of the conveying device. A cover 38 is provided over the open area of the inlet 31.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to the configuration of a reaping unit in a general-purpose combine harvester. [Background technology]

[0002] An example of a general-purpose combine harvester is disclosed in Patent Document 1. Patent Document 1 discloses a harvester having a reaping unit with a lateral feed auger that is driven to rotate around a shaft that runs in the left-right direction, and a transport device attached to the rear wall of the harvesting unit. The harvester cuts the crops in the field, and the horizontal feed auger transports the harvested crops laterally toward the entrance of the conveyor, where they are then transported rearward by the conveyor and supplied to the threshing device.

[0003] In the harvesting section, the horizontal feed auger is driven to rotate in a direction from the bottom of the entrance of the conveying device to the top of the entrance when viewed from the side, and transports the harvested crops along the left-right direction toward the entrance of the conveying device and supplies them to the bottom of the entrance of the conveying device.

[0004] The conveying device is rotationally driven so that the conveying body moves rearward along the bottom of the conveying device and moves forward along the top plate of the conveying device. The crops fed to the lower part of the entrance of the conveying device by the lateral feed auger are conveyed rearward along the bottom of the conveying device by the conveying body of the conveying device. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-27367 A (see Figs. 2 and 3) Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, combine harvesters have been used to harvest tall crops (for example, about 2 meters tall), crops that are wet after rain, and crops that are planted densely in fields. When such crops are harvested, if the crops are transported backward along the bottom of the conveying device and fed to the threshing device, the crops may not be fed properly from the conveying device to the threshing device due to factors such as the crops being long or wet, or the amount of crop being transported being large.

[0007] As mentioned above, if the crops are not fed properly from the conveying device to the threshing device, the crops may be transported forward from the rear end of the conveying device along the top plate of the conveying device by the conveying body of the conveying device, and the crops may reach the top of the entrance part of the conveying device. If this situation is repeated, clumps of crop may occur and grow above the entrance of the conveying device. When the grown clumps of crop move forward from the top of the entrance of the conveying device, the crop may become entangled around the lateral feed auger. If the crop becomes entangled around the lateral feed auger and grows, it may develop into a blockage of crop at the entrance of the conveying device.

[0008] The present invention aims to reduce the occurrence of crops transported forward from the rear end of the transport device along the top plate of the transport device in a combine harvester moving forward from the top of the entrance part of the transport device and becoming entangled in the lateral feed auger. [Means for solving the problem]

[0009] The combine harvester of the present invention is equipped with a cutting section having a lateral feed auger that is driven to rotate around an axis that runs in the left-right direction and that cuts crops in a field; a conveying device whose entrance section is attached to the rear wall of the cutting section and that conveys crops supplied to the entrance section rearward; and a threshing device to which the crops conveyed by the conveying device are supplied and that threshers the supplied crops, wherein the lateral feed auger is driven to rotate in a direction from the bottom of the entrance section to the top of the entrance section in a side view and conveys the cut crops along the left-right direction toward the entrance section and supplies them to the entrance section, and the conveying device has a conveying body that is driven to rotate so as to move rearward along the bottom of the conveying device and move forward along the top plate of the conveying device, and the crops supplied to the entrance section are conveyed rearward along the bottom by the conveying body, and a cover is provided above the opening area of ​​the entrance section.

[0010] According to the present invention, if crops transported backward along the bottom of the conveying device are not fed to the threshing device but are transported forward along the top plate of the conveying device and reach the top of the entrance part of the conveying device, the movement of the crops forward from the top of the entrance part of the conveying device is likely to be stopped by the cover. Even if clumps of crops occur above the entrance of the conveying device, the cover tends to prevent the clumps of crops from moving forward from above the entrance of the conveying device.

[0011] This reduces the likelihood of the crop moving forward from the top of the entrance of the conveyor and becoming entangled in the traverse auger. By reducing the amount of crops getting wrapped around the lateral feed auger, it is possible to prevent the crops from clogging the entrance of the conveying device, which allows the crops to be smoothly supplied from the lateral feed auger to the entrance of the conveying device, thereby improving the crop conveying performance.

[0012] In the present invention, it is preferable that the cover be provided across the entire width of the inlet portion in the left-right direction.

[0013] According to the present invention, the cover functions across the entire width of the entrance of the conveying device in the left-right direction, and the cover's function of stopping the movement of crops forward from the top of the entrance of the conveying device is enhanced, which is advantageous in terms of reducing the amount of crops getting entangled around the lateral feed auger and improving crop transport performance.

[0014] In the present invention, it is preferable that the cover is provided at a position forward of a front end of a movement locus of the conveying body in a side view.

[0015] According to the present invention, the cover is provided at a position forward of the front end of the movement path of the conveying body of the conveying device, so that a space is created between the cover and the front end of the movement path of the conveying body of the conveying device. This means that crops that have been transported forward along the top plate of the conveying device and reached the top of the entrance of the conveying device will move from the top of the entrance of the conveying device through the aforementioned space to the bottom of the entrance of the conveying device due to the rotation of the conveying body of the conveying device, and will then be transported backward along the bottom of the conveying device, which is advantageous in terms of preventing crops from clogging at the entrance of the conveying device and improving crop transport performance.

[0016] In the present invention, it is preferable that the cover is provided at a position higher than the position of an upper end of the outer periphery of the traverse auger in a side view.

[0017] When the cover is used to stop the movement of crops forward from above the entrance of the conveying device, it is preferable that the cover extends downward sufficiently long, but in this configuration, the area of ​​the entrance of the conveying device is reduced by the cover.

[0018] According to the present invention, the cover is provided at a position higher than the position of the upper end of the outer periphery of the traverse auger, and the cover does not extend downward more than necessary, so that the area of ​​the entrance of the conveying device is secured. This maintains the cover's function of stopping crops from moving forward from the top of the entrance of the conveying device while ensuring the area of ​​the entrance of the conveying device, which is advantageous in terms of preventing crops from clogging at the entrance of the conveying device and improving crop transport performance.

[0019] In the present invention, it is preferable that the cover be provided closer to the traverse auger than the rear wall portion in a side view.

[0020] When crops become entangled around the traverse auger, the rotation of the traverse auger causes the crops entangled around the traverse auger to rotate so as to move from the bottom to the top of the entrance of the conveying device.

[0021] According to the present invention, the cover is provided closer to the lateral feed auger than the rear wall of the cutting section, and the cover is in a state where it is close to the outer periphery of the lateral feed auger. Therefore, as described above, when the crop wrapped around the lateral feed auger moves from the bottom to the top of the entrance part of the conveying device, the crop wrapped around the lateral feed auger is likely to come into contact with the cover, and part of the crop wrapped around the lateral feed auger is likely to be removed from the lateral feed auger by the cover. This allows the cover to suppress the growth of crops that have become entangled around the lateral feed auger, which is advantageous in terms of reducing the amount of crops that have become entangled around the lateral feed auger and improving crop transport performance.

[0022] In the present invention, it is preferable that the cover overlaps with the outer periphery of the traverse auger when viewed downward in a direction along the rear wall portion from a position above the cover.

[0023] According to the present invention, the cover and the outer periphery of the lateral feed auger overlap when viewed in that direction, and the function of the cover to remove part of the crop that has become wrapped around the lateral feed auger is enhanced, which is advantageous in terms of reducing the amount of crop that gets wrapped around the lateral feed auger and improving crop transport performance.

[0024] In the present invention, it is preferable that the distance between the cover and the outer periphery of the lateral feed auger in a side view is smaller than the distance between the cover and the movement trajectory of the transport body in a side view.

[0025] According to the present invention, the distance between the cover and the outer periphery of the lateral feed auger is small, and the function of the cover to remove part of the crop wrapped around the lateral feed auger is enhanced, which is advantageous in terms of reducing the amount of crop that wraps around the lateral feed auger and improving crop transport performance.

[0026] In the present invention, it is preferable that the cover, when viewed from the side, has a first portion extending from the upper part of the opening area of ​​the inlet portion toward the axis of the lateral feed auger, and a second portion extending downward from the lower end of the first portion along the rear wall portion.

[0027] According to the present invention, when the rotation of the traverse auger causes the crops wound around the traverse auger to come into contact with the cover, the crops wound around the traverse auger first come into contact with the lower part of the second portion of the cover. The second part of the cover extends downward along the rear wall of the cutting section and is oriented in the direction of rotation of the outer periphery of the lateral feed auger, so that the second part of the cover easily bites into the crops wrapped around the lateral feed auger and separates some of the crops from the lateral feed auger.

[0028] According to the invention, a portion of the crop separated by the second portion of the cover reaches from the second portion of the cover to the first portion. The first part of the cover extends from above the opening area of ​​the entrance of the conveying device toward the axis of the cross-feed auger and is oriented in a manner that intersects with the rotation direction of the outer periphery of the cross-feed auger, so that some of the crops separated by the second part of the cover are guided by the first part of the cover in a direction away from the cross-feed auger in the radial direction and removed from the cross-feed auger.

[0029] This allows the cover to be configured in a shape suitable for removing parts of the crop that have become wrapped around the lateral feed auger, and the cover's function of removing parts of the crop that have become wrapped around the lateral feed auger is enhanced, which is advantageous in terms of reducing the amount of crop that gets wrapped around the lateral feed auger and improving crop transport performance. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. 2 is a longitudinal sectional left side view of the reaping unit and the transport device. [Figure 4] FIG. 2 is a cross-sectional plan view of the reaping unit and the transport device. [Figure 5] FIG. 10 is a plan view of the traverse auger and the conveying device in a state where the traverse auger is deployed. [Figure 6] FIG. [Figure 7] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0031] Figures 1 to 7 show a general-purpose combine harvester, and in Figures 1 to 7, F indicates the forward direction, B indicates the backward direction, U indicates the upward direction, D indicates the downward direction, R indicates the right direction, and L indicates the left direction.

[0032] (Overall configuration of the combine) As shown in Figures 1 and 2, a crawler-type traveling device 2 is provided on a machine frame 1, and a driving section 3 is provided on the right part of the front of the machine frame 1. A threshing device 4 is provided on the left part of the machine frame 1, a grain tank 5 is provided on the right part of the machine frame 1, and a crop discharge device 6 is attached to the lower part of the rear of the grain tank 5.

[0033] The conveying device 7 is attached to the front of the threshing device 4 so as to be able to swing up and down about an axis P1 along the left-right direction, and extends forward from the threshing device 4. The reaping unit 8 is attached to the front of the conveying device 7, and the reaping unit 8 and the conveying device 7 can be raised and lowered together about the axis P1.

[0034] As the combine moves forward, crops in the field are cut by the cutting unit 8, and the cut crops are supplied from the cutting unit 8 to the conveying device 7, transported rearward by the conveying device 7, and then supplied from the conveying device 7 to the threshing device 4. The crops are threshed by the threshing device 4, and the threshed and collected crops are stored in the grain tank 5. When the grain tank 5 is full, the crops in the grain tank 5 are discharged by the discharge device 6.

[0035] (Configuration of reaping unit 8) 1 and 2, the reaping unit 8 is provided with a bottom 9, a rear wall 10, side walls 11, a cutting device 12, a divider 13, a raking reel 14, and a lateral feed auger 15. The bottom 9, the rear wall 10, and the right and left side walls 11 are connected to form the framework of the reaping unit 8.

[0036] As shown in Figures 3 and 4, a clipper-type cutting device 12 is attached to the front of the bottom 9, and right and left dividers 13 are attached to the front of the side wall portions 11. A take-in reel 14 is provided above the cutting device 12. A transverse feed auger 15 is attached across the right and left side wall portions 11 so as to be rotatable about an axis P2 extending in the left-right direction.

[0037] As the combine moves forward, the crops in the field are divided by the divider 13, raked backward by the raking reel 14, and the base of the crops is cut by the cutting device 12, and the crops are harvested.

[0038] Crops cut on the right side of the cutting unit 8 are transported leftward by the horizontal feed auger 15, and are supplied from the horizontal feed auger 15 to the conveying device 7. Crops cut on the left side of the cutting unit 8 are transported rightward by the horizontal feed auger 15, and are supplied from the horizontal feed auger 15 to the conveying device 7. The crops are transported rearward by the conveying device 7, and are supplied from the conveying device 7 to the threshing device 4.

[0039] (Configuration of horizontal feed auger 15) As shown in FIGS. 3, 4 and 5, the traverse auger 15 includes a main body 16, a first helical portion 21, a second helical portion 22, and raking members 17, 18, 19, 20, 23, 24, 25 and 26.

[0040] The main body 16 is cylindrical and rotatably attached to the right and left side walls 11 around the axis P2. The first spiral portion 21 is flat and attached to the outer periphery of the main body 16, extending from a position offset leftward from the center of the main body 16 to the right end of the main body 16.

[0041] The second spiral portion 22 is formed in a flat plate shape and is attached to the outer periphery of the main body portion 16, spanning from a position offset leftward from the center position of the main body portion 16 to the left end portion of the main body portion 16. The first spiral portion 21 is formed to be longer than the second spiral portion 22.

[0042] The main body 16, the first spiral portion 21, and the second spiral portion 22 are rotated integrally in the rotation direction A1. When the first spiral portion 21 and the second spiral portion 22 are rotated in the rotation direction A1, they move in a direction from the bottom 9 of the reaping unit 8 toward the lower portion of an inlet 31 of the conveying device 7 (described later) and from the lower portion of the inlet 31 of the conveying device 7 toward the upper portion of the inlet 31 (see FIG. 3).

[0043] Sweeping members 17, 18, 19, 20, 23, 24, and 25 are provided on the outer periphery of the main body 16 in a region in front of the inlet 31 of the conveying device 7. Sweeping member 26 is provided on the right side of the outer periphery of the main body 16.

[0044] The sweeping members 17-20, 23-26 are configured to be able to protrude and retract radially into the main body 16. Each of the sweeping members 17-20, 23-26 protrudes from the main body 16 in a phase above, below, or in front of the main body 16, and retracts into the main body 16 in a phase behind the main body 16 (a phase facing an inlet 31 of the conveying device 7, which will be described later).

[0045] The crops cut at the right side of the cutting section 8 are scraped in by the scraping member 26, transported to the left by the first spiral section 21, and supplied to the entrance section 31 of the conveying device 7 from near the end 21a of the first spiral section 21, and are scraped into the entrance section 31 of the conveying device 7 by the scraping members 17-20, 23-25.

[0046] The crops cut at the left side of the cutting section 8 are transported to the right by the second spiral section 22 and supplied to the entrance section 31 of the conveying device 7 from near the end 22a of the second spiral section 22, and are scraped into the entrance section 31 of the conveying device 7 by the scraping members 17-20, 23-25.

[0047] (Configuration of the conveying device 7) As shown in Figures 3, 4, and 5, the conveying device 7 includes a bottom 27, right and left wall portions 28, 29, a top plate portion 30, an inlet portion 31, a drive shaft 32, a rotating body 33, right and left conveying chains 34, 35, a conveying body 36, a dust exhaust fan 37, etc.

[0048] The entire conveying device 7 is configured as a cylinder with a rectangular cross section, with a bottom 27, right and left wall sections 28, 29, and a top plate section 30 connected together. A rectangular entrance section 31 is formed at the front of the conveying device 7 by the front end of the bottom 27, the front ends of the walls 28, 29, and the front end of the top plate section 30, and the entrance section 31 is attached to a portion of the rear wall section 10 of the reaping unit 8 that is offset leftward from the center in the left-right direction.

[0049] A drive shaft 32 is provided rotatably around an axis P1 (see FIG. 1). A cylindrical rotor 33 is provided at the front of the conveying device 7 rotatably around an axis P3 extending in the left-right direction.

[0050] The right conveying chain 34 is attached between the right part of the drive shaft 32 and the right part of the rotating body 33, and the left conveying chain 35 is attached between the left part of the drive shaft 32 and the left part of the rotating body 33. A plurality of rod-shaped conveying bodies 36 are attached between the right and left conveying chains 34, 35, and each of the conveying bodies 36 is attached to the conveying chains 34, 35 at a predetermined interval in the front-to-rear direction.

[0051] 1, the rotating body 33 and the conveying chains 34, 35 are rotated in the rotation direction A2 around the axes P1, P3. The conveying body 36 moves backward along the bottom portion 27 and forward along the top plate portion 30.

[0052] 1 and 2, a dust exhaust fan 37 is provided on the top panel 30 of the transfer device 7. Dust inside the transfer device 7 is sucked by the dust exhaust fan 37 and discharged to the outside of the transfer device 7.

[0053] (Positional Relationship Between the First Spiral Section 21, the Second Spiral Section 22, and the Conveyor Device 7) As shown in FIG. 5, a right imaginary line L12 is assumed to extend from the right conveyor chain 34 of the conveyor device 7 in the front-rear direction in a plan view. A left imaginary line L22 extending from the left conveyor chain 35 of the conveyor device 7 along the front-rear direction is assumed. A central imaginary line L31 is assumed to extend from the left-right central position between the right and left conveyor chains 34, 35 of the conveyor device 7 along the front-rear direction.

[0054] The end 21a of the first spiral portion 21 is located slightly to the right of the central imaginary line L31 (opposite the side to which the conveying device 7 is biased) and is located to the left of the right imaginary line L12. As a result, the end 21a of the first spiral portion 21 is located between the right imaginary line L12 and the left imaginary line L22.

[0055] The end 21a of the first spiral portion 21 is located between the central imaginary line L31 and the right imaginary line L12 (the imaginary line on the opposite side of the right and left imaginary lines L12, L22 to the side to which the conveying device 7 is biased). The end 21a of the first spiral portion 21 is located in front of the left-right center between the right and left conveying chains 34, 35 of the conveying device 7.

[0056] An end 22a of the second spiral portion 22 is located on the left side of the central imaginary line L31 (the side to which the conveying device 7 is biased), and is located slightly to the right of the left imaginary line L22. As a result, the end 22a of the second spiral portion 22 is located between the central imaginary line L31 and the left imaginary line L22 (the imaginary line on the side where the conveying device 7 is biased, out of the right and left imaginary lines L12, L22).

[0057] When a distance W1 in the left-right direction between the end 21a of the first spiral portion 21 and the central virtual line L31 is compared with a distance W2 in the left-right direction between the end 22a of the second spiral portion 22 and the central virtual line L31, the distance W1 is smaller than the distance W2. As a result, the end 21a of the first spiral portion 21 is located closer to the central virtual line L31 than the end 22a of the second spiral portion 22.

[0058] As shown in Figures 3 and 5, when comparing the distance W3 from the end 21a of the first spiral portion 21 to the end 22a of the second spiral portion 22 when moving toward the upstream side of the rotation direction A1 with the distance W4 from the end 21a of the first spiral portion 21 to the end 22a of the second spiral portion 22 when moving toward the downstream side of the rotation direction A1, the distance W3 is slightly larger than the distance W4.

[0059] (Positional relationship between the scraping members 17-20, 23-25 ​​and the conveying device 7) As shown in Figure 5, in a plan view, a right wall virtual line L13 is imagined extending in the front-to-rear direction from the right wall 28 of the conveying device 7 (the wall of the conveying device 7 on the opposite side to the side to which the conveying device 7 is biased). A left wall imaginary line L23 is assumed to extend in the front-to-rear direction from the left wall 29 of the transport device 7 (the wall of the transport device 7 on the side to which the transport device 7 is biased). A first passing locus L11 along which the end 21a of the first spiral portion 21 passes as the traverse auger 15 rotates is assumed. A second passing locus L21 along which the end 22a of the second spiral portion 22 passes as the traverse auger 15 rotates is assumed.

[0060] The sweeping members 17 to 20, 23 to 25 are located between the right wall imaginary line L13 and the left wall imaginary line L23, and are provided in the main body 16 in front of the entrance 31 of the conveying device .

[0061] The sweeping member 20 is provided at a position on the first passing locus L11, adjacent to the right side of the end 22a of the second spiral portion 22 on the upstream side in the rotation direction A1. The sweeping member 25 is provided between the second passing trajectory L21 and the left wall imaginary line L23, and is provided at a position adjacent to the left lateral side on the upstream side of the end 22a of the second spiral portion 22 in the rotation direction A1.

[0062] The number of suction members 17, 18, 19 provided between the first passing trajectory L11 and the right wall virtual line L13 is greater than the number of suction members 23, 24 provided between the first passing trajectory L11 and the second passing trajectory L21.

[0063] The sweeping member 18 is provided at a position adjacent to the right side of the end 21a of the first spiral portion 21 on the upstream side in the rotation direction A1, and is provided on the right side of the central imaginary line L31. The sweeping member 24 is provided at a position adjacent to the left side of the end 21a of the first spiral portion 21 on the upstream side in the rotation direction A1, and is provided on the left side of the central imaginary line L31. The sweeping member 17 is provided at a position adjacent to the end 21a of the first spiral portion 21 on the right side of the downstream side in the rotation direction A1, and is provided on the right side of the central imaginary line L31. The sweeping member 23 is provided at a position adjacent to the end 21a of the first spiral portion 21 on the left side downstream in the rotation direction A1, and is provided on the left side of the central imaginary line L31.

[0064] As a result, the sweeping members 17, 18 are provided laterally to the right of the end 21a of the first helical portion 21, and the sweeping members 23, 24 are provided laterally to the left of the end 21a of the first helical portion 21. The end 21a of the first helical portion 21 is surrounded by the sweeping members 17, 18, 23, 24.

[0065] (Cover 38 configuration) 3 and 4, a cover 38 is provided above the entrance 31 of the conveying device 7. As shown in FIGS. 6 and 7, the cover 38 is made of a plate material and has a first portion 38a, a second portion 38b, and right and left third portions 38c.

[0066] A third portion 38c of the cover 38 is attached to the rear wall 10 of the reaping unit 8. When viewed along the direction H1, which is the movement direction of the conveying body 36 of the conveying device 7, the cover 38 is provided at the top within the range of the opening area of ​​the entrance 31 of the conveying device 7. The cover 38 is provided across the entire width of the entrance 31 of the conveying device 7 in the left-right direction.

[0067] In a side view, the first portion 38a of the cover 38 extends from the upper edge portion (the upper portion of the opening area) of the entrance portion 31 of the conveying device 7 toward the axis P2 of the lateral feed auger 15. In a side view, the second portion 38b of the cover 38 extends downward from the lower end portion of the first portion 38a of the cover 38 along the rear wall portion 10 of the reaping unit 8.

[0068] (Positional relationship between the cover 38 and each part) As shown in FIG. 6, when the reaping unit 8 is lowered to the ground, the cover 38 is located forward of the rear wall 10 of the reaping unit 8 (on the side of the lateral feed auger 15).

[0069] A movement locus L41 is assumed in a side view of the conveying body 36 of the conveying device 7. When the reaping unit 8 is lowered to the ground, the cover 38 is located forward of the front end of the movement locus L41 (toward the lateral feed auger 15).

[0070] In the traverse auger 15, the upper ends of the outer peripheries of the first spiral portion 21 and the second spiral portion 22 are defined as upper end portions 15a of the outer periphery of the traverse auger 15. When the cutting unit 8 is lowered to the ground, the cover 38 is provided at a position higher than the position of the upper end portions 15a of the outer periphery of the traverse auger 15 in a side view.

[0071] When viewed along direction H1, which is the movement direction of conveyor 36 of conveying device 7, cover 38 overlaps with the movement trajectories of first spiral portion 21 and second spiral portion 22, and also with the movement trajectories of sweeping members 17-20, 23-25. The lower end of second portion 38b of cover 38 is located at approximately the same height as the upper portion of movement trajectory L41, and is located at a higher position than conveying chains 34, 35 of conveying device 7.

[0072] When viewed downward in the direction H2 along the rear wall portion 10 of the cutting section 8 from a position above the cover 38, the cover 38 overlaps with the movement trajectories of the first spiral portion 21 and the second spiral portion 22, and also overlaps with the movement trajectories of the scraping members 17-20, 23-25.

[0073] A distance W5 is assumed between the lower end of the second portion 38b of the cover 38 in a side view and the outer peripheries of the first spiral portion 21 and the second spiral portion 22 of the traverse auger 15. A distance W6 is assumed between the lower end of the second portion 38b of the cover 38 in a side view and the movement locus L41. In this case, the distance W5 is smaller than the distance W6.

[0074] (First Alternative Embodiment of the Invention) A flat cover 38 may be provided along the rear wall 10 of the cutting unit 8 so as not to extend beyond the rear wall 10 of the cutting unit 8 to the front side (the side of the cross-feed auger 15).

[0075] (Second Alternative Embodiment of the Invention) The cover 38 may be provided on the rear side (inside the conveying device 7) of the rear wall 10 of the cutting unit 8, and may be configured so as not to extend from the rear wall 10 of the cutting unit 8 to the front side (towards the cross-feed auger 15). According to this configuration, when viewed from the direction H2, the cover 38 and the front portion of the movement locus L41 overlap with each other.

[0076] (Third Alternative Embodiment of the Invention) When viewed from the direction H1, the lower end of the second portion 38b of the cover 38 may be configured to be located below the upper portion of the movement trajectory L41. According to this configuration, when viewed from the direction H1, the cover 38 and the upper portion of the movement locus L41 overlap with each other.

[0077] (Fourth Alternative Embodiment of the Invention) Instead of the cover 38 being made of a plate material, the cover 38 may be configured in a comb shape in which thin rods extending in the vertical direction are provided at intervals in the horizontal direction. As described above, when the cover 38 is configured in a comb shape, a rod-shaped member extending in the left-right direction may be configured to be connected to the lower ends of each of the thin rod members extending in the up-down direction.

[0078] (Correspondence to claims)-1 The machine is provided with a reaping unit 8 that has a lateral feed auger 15 that is driven to rotate around an axis P2 that extends in the left-right direction and that reaps crops in the field. The entrance 31 is attached to the rear wall 10 of the reaping unit 8, and a conveying device 7 is provided to convey the crops fed to the entrance 31 rearward. The threshing device 4 is provided to receive the crops transported by the transport device 7 and thresh the crops.

[0079] The horizontal feed auger 15 is driven to rotate in a direction from the bottom of the entrance section 31 to the top of the entrance section 31 when viewed from the side, and transports the harvested crops along the left-right direction toward the entrance section 31 and supplies them to the entrance section 31.

[0080] The conveying device 7 has a conveying body 36 that is rotationally driven to move rearward along the bottom 27 of the conveying device 7 and forward along the top plate 30 of the conveying device 7, and the crops supplied to the entrance portion 31 are conveyed rearward along the bottom 27 by the conveying body 36. A cover 38 is provided over the opening area of ​​the inlet portion 31 .

[0081] (Correspondence to claims)-2 The cover 38 is provided across the entire width of the inlet portion 31 in the left-right direction. The cover 38 is provided at a position forward of the front end of the movement locus L41 of the conveyor 36 in a side view. The cover 38 is provided at a position higher than the position of the upper end portion 15a of the outer periphery of the traverse auger 15 in a side view. The cover 38 is provided on the side of the transverse feed auger 15 relative to the rear wall portion 10 in a side view.

[0082] (Correspondence to claims) - 3 The cover 38 overlaps with the outer periphery of the traverse auger 15 when viewed downward in the direction H2 along the rear wall portion 10 from a position above the cover 38. A distance W5 between the cover 38 and the outer periphery of the transverse auger 15 in a side view is smaller than a distance W6 between the cover 38 and the movement locus L41 of the conveying body 36 in a side view.

[0083] When viewed from the side, the cover 38 has a first portion 38a extending from the upper part of the opening area of ​​the inlet portion 31 toward the axis P2 of the cross-feed auger 15, and a second portion 38b extending downward from the lower end of the first portion 38a along the rear wall portion 10. [Industrial Applicability]

[0084] The present invention can be applied to general-purpose combine harvesters. [Explanation of symbols]

[0085] 4. Threshing equipment 7. Conveyor equipment 8 Reaping section 10 Rear wall 15 Horizontal feed auger 15a Upper end 27 Bottom 30 Top plate 31 Entrance 36 Transporter 38 カバー 38a Part 1 38b Part 2 H2 direction L41 movement trajectory P2 shaft core W5 interval W6 interval

Claims

1. a reaping unit having a lateral feed auger that is driven to rotate around an axis along the left-right direction and that reaps crops in a field; a conveying device having an inlet attached to a rear wall of the reaping unit and conveying the crops supplied to the inlet rearward; a threshing device to which the crops transported by the transport device are supplied and which threshes the supplied crops, The lateral feed auger is rotationally driven in a direction from a lower portion of the entrance portion to an upper portion of the entrance portion in a side view, and transports the harvested crops along a left-right direction toward the entrance portion and supplies the harvested crops to the entrance portion; the conveying device has a conveying body that is rotationally driven to move rearward along the bottom of the conveying device and forward along the top plate of the conveying device, and the crops supplied to the inlet are conveyed rearward along the bottom by the conveying body; A combine harvester having a cover provided on the upper part of the opening area of ​​the entrance portion.

2. The combine harvester according to claim 1, wherein the cover is provided across the entire width of the entrance portion in the left-right direction.

3. The combine harvester according to claim 1, wherein the cover is provided at a position forward of a front end of a movement locus of the transport body in a side view.

4. The combine harvester according to claim 1, wherein the cover is provided at a position higher than the position of an upper end of the outer periphery of the lateral feed auger in a side view.

5. The combine harvester according to claim 1, wherein the cover is provided closer to the lateral feed auger than the rear wall portion in a side view.

6. The combine harvester according to claim 5, wherein the cover overlaps with an outer periphery of the lateral feed auger when viewed downward in a direction along the rear wall portion from a position above the cover.

7. The combine harvester according to claim 5, wherein a distance between the cover and an outer periphery of the lateral feed auger in a side view is smaller than a distance between the cover and a movement trajectory of the transport body in a side view.

8. The combine harvester described in claim 5, wherein the cover has, in a side view, a first portion extending from an upper portion of the opening area of ​​the inlet portion toward the axis of the lateral feed auger, and a second portion extending downward from a lower end of the first portion along the rear wall portion.

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