Combine

Abstract

To provide a combine equipped with a receiving member capable of coping with a work form in which waste straws are continuously discharged to a farm field.SOLUTION: A waste straw discharge device includes a receiving member 28 that can oscillate around a shaft core P3 along a right-left direction. The receiving member 28 is positioned at a receiving posture in which, in a state that waste straws are not received, it extends from the shaft core P3 backward, and an oscillation end part of the receiving member 28 is at a higher position than a base part of the receiving member 28. When the weight of received waste straws reaches a predetermined weight set beforehand, the receiving member 28 oscillates downward from the receiving posture, discharges the waste straws to a farm field, and returns to the receiving posture. The receiving member 28 can change its posture to a non-use posture A3, in which its extends downward from the shaft core P3.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a configuration for discharging straw into a field in a combine harvester. [Background technology]

[0002] As disclosed in Patent Document 1, some combine harvesters are equipped with a straw transporting device that transports straw, which is the grazing straw after threshing, in a sideways position from the threshing device toward the rear, and a receiving member is provided below the terminal end of the straw transporting device.

[0003] The receiving member, in a receiving position extended backward, receives the waste straw that falls from the end of the waste straw conveying device. When the weight of the waste straw received and piled up on the receiving member reaches a preset weight, the receiving member swings downward from the receiving position, and the waste straw is discharged from the receiving member into the field, and then the receiving member returns to the receiving position. As a result, when the straw after threshing comes out continuously from the threshing device and the straw transporting device, a predetermined amount of the straw is discharged onto the field in a bundle, and this state is repeated. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-54 A Summary of the Invention [Problem to be solved by the invention]

[0005] In a combine harvester, when the straw after threshing comes out continuously from the threshing device and the straw conveying device, there is a demand for an operating mode in which the straw is discharged continuously onto the field, in addition to the operating mode in which a predetermined amount of straw is discharged onto the field in a bundled state as described above. The present invention aims to configure a combine harvester equipped with a receiving member so that it can also be used in an operation in which straw is continuously discharged into a field. [Means for solving the problem]

[0006] The present invention is a combine harvester equipped with a threshing device that threshes harvested stalks, a straw conveying device that conveys the straw after threshing in a sideways position from the threshing device toward the rear, and a straw discharge device that discharges the straw from the terminal end of the straw conveying device into a field, wherein the straw discharge device has a receiving member that can swing around an axis along the left-right direction, and when the receiving member is not receiving straw, it extends rearward from the axis and is in a receiving position in which the swinging end of the receiving member is higher than the base of the receiving member, and in the receiving position, the receiving member is capable of receiving straw that has fallen from the terminal end of the straw conveying device, and when the weight of the received straw reaches a predetermined weight that has been set in advance, it swings downward from the receiving position to discharge the straw into the field and returns to the receiving position, and the receiving member can be changed to an unused position in which it extends downward from the axis.

[0007] According to the present invention, in an operation mode in which a predetermined amount of waste straw is discharged onto a farm field in a bundled state, the waste straw that falls from the terminal end of the waste straw transporting device is received and piled up by a receiving member in a receiving position. When the receiving member is in the receiving position, the swinging end of the receiving member is positioned higher than the base of the receiving member, so that the straw that falls onto the receiving member is unlikely to fall backward from the swinging end of the receiving member. When the weight of the waste straw piled up on the receiving member reaches a predetermined weight, the receiving member swings downward from the receiving position, and the waste straw is discharged from the receiving member into the field, after which the receiving member returns to the receiving position.

[0008] In a working style in which waste straw is continuously discharged into a farm field, the worker need only set the receiving member in the unused position. As a result, the waste straw that falls from the end of the waste straw transporting device is not received by the receiving member, but passes through the receiving member and is discharged into the field, and the waste straw is continuously discharged into the field.

[0009] As described above, in a combine equipped with a receiving member, in addition to the operating mode in which a predetermined amount of waste straw is discharged into the field in a bundled state, it is also possible to perform an operating mode in which waste straw is continuously discharged into the field, thereby improving the workability of the combine.

[0010] The present invention relates to a combine harvester including a threshing device for threshing harvested stalks, a straw transport device for transporting the straw after threshing in a sideways position from the threshing device toward the rear, and a straw discharge device for discharging the straw from the end of the straw transport device into a field. The straw discharge device has a receiving member that can swing about an axis along the left-right direction, and a guide member that extends downward from a position above the receiving member, and the receiving member is arranged to be movable relative to the axis when not receiving the straw. The receiving member extends rearward from the core and is positioned in a receiving position in which the swinging end of the receiving member overlaps with the lower part of the guide member in a side view, and in this receiving position the receiving member is capable of receiving waste straw that has fallen from the terminal end of the waste straw conveying device, and when the weight of the received waste straw reaches a predetermined weight that has been set in advance, the receiving member swings downward from the receiving position to discharge the waste straw into the field and then returns to the receiving position, and the receiving member is capable of changing its position to an unused position in which it is away from the lower part of the guide member and downward.

[0011] According to the present invention, in an operation mode in which a predetermined amount of waste straw is discharged onto a farm field in a bundled state, the waste straw that falls from the terminal end of the waste straw transporting device is received and piled up by a receiving member in a receiving position. A guide member is provided extending downward from a position above the receiving member, and when the receiving member is in the receiving position, the swinging end of the receiving member overlaps with the lower part of the guide member in a side view. As a result, even if the straw that has fallen onto the receiving member tries to fall rearward from the swinging end of the receiving member, the straw is likely to be stopped by the guide member, so that the straw that has fallen onto the receiving member rarely falls rearward from the swinging end of the receiving member. When the weight of the waste straw piled up on the receiving member reaches a predetermined weight, the receiving member swings downward from the receiving position, and the waste straw is discharged from the receiving member into the field, after which the receiving member returns to the receiving position.

[0012] In a working style in which waste straw is continuously discharged into a farm field, the worker need only set the receiving member in the unused position. As a result, the waste straw that falls from the end of the waste straw transporting device is not received by the receiving member, but passes through the receiving member and is discharged into the field, and the waste straw is continuously discharged into the field.

[0013] As described above, in a combine equipped with a receiving member, in addition to the operating mode in which a predetermined amount of waste straw is discharged into the field in a bundled state, it is also possible to perform an operating mode in which waste straw is continuously discharged into the field, thereby improving the workability of the combine.

[0014] In the present invention, it is preferable that the guide member be capable of being changed to a retracted position in which the guide member is positioned above the receiving member in the receiving position.

[0015] In a working mode in which straw is continuously discharged into a farm field, the operator need only set the guide member in the retracted position. As a result, the waste straw that falls from the end of the waste straw transporting device is discharged into the field with little interference from the guide member, so that the waste straw can be discharged into the field smoothly and continuously.

[0016] In the present invention, a guide portion in a rearward-facing position is provided which guides the straw that has fallen from the terminal end of the straw conveying device to the receiving member in the receiving position, and it is preferable that the unused position is set at a position forward of an imaginary line extending diagonally downward from the guide portion along the guide portion when viewed from the side.

[0017] According to the present invention, the waste straw that falls from the terminal end of the waste straw conveying device is guided by the guide section and reaches the receiving member in a receiving position, thereby reducing the chance that the waste straw that falls from the terminal end of the waste straw conveying device will reach a position outside the receiving member. This enables a stable operation in which a predetermined amount of waste straw is discharged into the field in a bundled state.

[0018] When the receiving member is set to the unused position, the receiving member is located forward of an imaginary line that extends obliquely downward from the guide portion along the guide portion in a side view. As a result, the straw that falls from the end of the straw conveying device is less likely to come into contact with the receiving member as it passes through it, which is advantageous in terms of improving the durability of the receiving member.

[0019] In the present invention, it is preferable that the non-use position is set to a position forward of an imaginary vertical line passing through the axis when viewed from the side.

[0020] According to the present invention, for example, when the combine is turned or reversed near an obstacle such as a ridge during harvesting operation, if the receiving member is set in an unused position forward of an imaginary vertical line passing through the axis, the possibility of the receiving member coming into contact with the obstacle such as the ridge is reduced, which is advantageous in terms of preventing damage to the receiving member.

[0021] In the present invention, it is preferable that the straw discharge device has an axial member that is arranged concentrically with the axial core and is capable of swinging around the axial core, and that a plurality of the receiving members are attached to the axial member at intervals along the left-right direction, and that the receiving posture and the unused posture can be set by an attitude setting device arranged at one of the left and right ends of the axial member.

[0022] According to the present invention, a shaft member that can swing around an axis is provided, and a plurality of receiving members are attached to the shaft member at intervals along the left-right direction. A posture setting device is provided at one of the left and right ends of the shaft member, and the posture setting device acts on the shaft member to set the receiving member (shaft member) to a receiving posture or a non-use posture. This allows the attitude setting device to act on all of the receiving members without any strain, making it possible to make the attitude setting device more compact.

[0023] In the present invention, the attitude setting device has a base member which can swing around the axis between a reference attitude and the reference attitude in one direction, a biasing member which biases the base member to the reference attitude, and a mounting portion which can mount and change the position of the axis member to a first mounting position and a second mounting position relative to the base member, and it is preferable that when the axis member is attached to the base member at the first mounting position, the receiving member is positioned in the receiving attitude when the base member is positioned in the reference attitude, and when the base member swings to one direction from the reference attitude, the receiving member swings downward from the receiving attitude, and when the axis member is attached to the base member at the second mounting position, the receiving member is positioned in the unused attitude when the base member is positioned in the reference attitude.

[0024] According to the present invention, by attaching the shaft member to the base member, the shaft member, the receiving member and the base member swing together around the axis and are biased together by the biasing member. When the shaft member is attached to the base member at the first attachment position, when the base member is positioned in the reference position, the receiving member is positioned in the receiving position.

[0025] The straw that falls from the end of the waste straw transport device is received by the receiving member in a receiving position, and when the weight of the waste straw received by the receiving member overcomes the biasing force of the biasing member, the base member swings from the standard position against the biasing member, the receiving member swings downward from the receiving position, and the waste straw is discharged from the receiving member into the field. After this, the base member returns to the standard position by the biasing member, and the receiving member returns to the receiving position.

[0026] According to the present invention, when the shaft member is attached to the base member at the second attachment position, the receiving member is positioned in the unused position when the base member is positioned in the reference position. When the shaft member is attached to the base member at the second mounting position and the base member is positioned in a reference position (when the receiving member is positioned in a non-use position), the base member can be swung from the reference position against the biasing member, and the receiving member can be swung forward from the non-use position. As a result, for example, during harvesting operation, even if the combine moves backwards and the receiving member in the unused position comes into contact with an obstacle, the receiving member will swing forward from the unused position upon contact with the obstacle, reducing the risk of damage to the receiving member.

[0027] As described above, in the attitude setting device, by changing the mounting position of the shaft member with respect to the oscillating base member, the receiving attitude and the unused attitude of the receiving member can be obtained, thereby simplifying the structure of the attitude setting device. When the receiving member is in the unused position, damage to the receiving member can be reduced, which is advantageous in terms of preventing damage to the receiving member.

[0028] In the present invention, it is preferable that the receiving member is capable of being changed to a stored position in which it extends upward from the axis.

[0029] According to the present invention, for example, when a combine harvester is loaded onto the platform of a truck or the like or a container and transported, an operator need only set the receiving member in the stored position. This makes it easier to create space between the lower part of the rear of the combine and the floor of the loading platform (container), making it easier to place other transported items in this space, which is advantageous in terms of improving the transport efficiency of the combine.

[0030] In the present invention, it is preferable that the straw discharge device has an axial member that is arranged concentrically with the axial core and is capable of swinging around the axial core, and that a plurality of the receiving members are attached to the axial member at intervals along the left-right direction, and that the receiving posture, the non-use posture and the storage posture can be set, and that the device is equipped with a posture setting device arranged at one of the left and right ends of the axial member.

[0031] According to the present invention, a shaft member that can swing around an axis is provided, and a plurality of receiving members are attached to the shaft member at intervals along the left-right direction. A posture setting device is provided at one of the left and right ends of the shaft member, and the posture setting device acts on the shaft member to set the receiving member (shaft member) to a receiving posture, a non-use posture, or a stored posture. This allows the attitude setting device to act on all of the receiving members without any strain, making it possible to make the attitude setting device more compact.

[0032] In the present invention, the attitude setting device has a base member that can swing around the axis to a reference attitude and in one direction from the reference attitude, a biasing member that biases the base member to the reference attitude, and a mounting portion that can mount and change the position of the axis member to a first mounting position, a second mounting position, and a third mounting position relative to the base member, and it is preferable that when the axis member is attached to the base member at the first mounting position, the receiving member is positioned in the receiving attitude when the base member is located in the reference attitude, and when the base member swings to one direction from the reference attitude, the receiving member swings downward from the receiving attitude, and when the axis member is attached to the base member at the second mounting position, the receiving member is positioned in the non-use attitude when the base member is located in the reference attitude, and when the axis member is attached to the base member at the third mounting position, the receiving member is positioned in the stored attitude when the base member is located in the reference attitude.

[0033] According to the present invention, by attaching the shaft member to the base member, the shaft member, the receiving member and the base member swing together around the axis and are biased together by the biasing member. When the shaft member is attached to the base member at the first attachment position, when the base member is positioned in the reference position, the receiving member is positioned in the receiving position.

[0034] The straw that falls from the end of the waste straw transport device is received by the receiving member in a receiving position, and when the weight of the waste straw received by the receiving member overcomes the biasing force of the biasing member, the base member swings from the standard position against the biasing member, the receiving member swings downward from the receiving position, and the waste straw is discharged from the receiving member into the field. After this, the base member returns to the standard position by the biasing member, and the receiving member returns to the receiving position.

[0035] According to the present invention, when the shaft member is attached to the base member at the second attachment position, the receiving member is positioned in the unused position when the base member is positioned in the reference position. When the shaft member is attached to the base member at the second mounting position and the base member is positioned in a reference position (when the receiving member is positioned in a non-use position), the base member can be swung from the reference position against the biasing member, and the receiving member can be swung forward from the non-use position. As a result, for example, during harvesting operation, even if the combine moves backwards and the receiving member in the unused position comes into contact with an obstacle, the receiving member will swing forward from the unused position upon contact with the obstacle, reducing the risk of damage to the receiving member. According to the present invention, when the shaft member is attached to the base member at the third attachment position, when the base member is in the reference position, the receiving member is in the stored position.

[0036] As described above, in the attitude setting device, by changing the mounting position of the shaft member with respect to the oscillating base member, the receiving attitude, the unused attitude and the stored attitude of the receiving member can be obtained, thereby simplifying the structure of the attitude setting device. When the receiving member is in the unused position, damage to the receiving member can be reduced, which is advantageous in terms of preventing damage to the receiving member.

[0037] In the present invention, it is preferable that the threshing device be provided with a dust discharge outlet at the rear of the threshing device for discharging straw dust and the like generated by the threshing device, and a partition wall portion be provided between the dust discharge outlet and the receiving member for guiding the straw dust from the dust discharge outlet to a field.

[0038] In a combine harvester, a dust discharge port is provided at the rear of the threshing device, and straw dust and the like generated by the threshing device are discharged from the dust discharge port. According to the present invention, a partition wall portion is provided between the dust outlet and the receiving member, and the straw waste discharged from the dust outlet is guided to the partition wall portion and discharged into the field with little adhesion to the straw waste discharge device (receiving member). This reduces malfunctions of the straw discharge device caused by straw scraps adhering to the straw discharge device.

[0039] In the present invention, it is preferable that the partition wall portion is a guide portion in a rearward-leaning position that guides the waste straw that has fallen from the terminal end of the waste straw conveying device to the receiving member in the receiving position.

[0040] According to the present invention, the waste straw that falls from the terminal end of the waste straw conveying device is guided by the partition wall portion and reaches the receiving member in a receiving position, so that the waste straw that falls from the terminal end of the waste straw conveying device is less likely to reach a position outside the receiving member. This enables a stable operation in which a predetermined amount of waste straw is discharged into the field in a bundled state.

[0041] In the present invention, a cover is provided having an upper portion, right and left side portions, and a rear portion, and is provided between the dust outlet and the receiving member, and it is preferable that the rear portion is the partition wall portion.

[0042] According to the present invention, the straw waste discharged from the dust discharge port is guided by the cover and discharged into the field with little adhesion to the straw waste discharge device (receiving member). In this case, the cover has an upper portion, right and left side portions, and a rear portion, which sufficiently prevents the straw dust discharged from the dust outlet from flying up, which is advantageous in reducing malfunctions of the straw discharge device caused by straw dust adhering to the straw discharge device. [Brief description of the drawings]

[0043] [Figure 1] FIG. [Diagram 2] FIG. 2 is a plan view of the rear of the combine. [Diagram 3] FIG. 2 is a rear view of the rear of the combine harvester. [Figure 4] FIG. 2 is a left side view of the guide member and the lock member in the rear cover of the combine harvester. [Diagram 5] FIG. 2 is a plan view of the guide member and the lock member in the rear cover of the combine harvester. [Figure 6] This is a left side view of the vicinity of the receiving member (in the receiving position and in the downward position) in the straw discharge device. [Figure 7] 11 is a right side vertical sectional view of the attitude setting device in the vicinity of the base member. FIG. [Figure 8] 4 is a cross-sectional plan view of the vicinity of the base member in the attitude setting device. FIG. [Figure 9] 1 is a left side view of the vicinity of the receiving member (in an unused position) in the straw discharge device. FIG. [Figure 10] 1 is a left side view of the straw discharge device in the vicinity of the receiving member (in a stored position). FIG. [Figure 11] FIG. 2 is a left side view of a combine harvester according to a first alternative embodiment of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0044] 1 to 11 show a head-feeding combine harvester, and in FIGS. 1 to 11, F indicates the forward direction, B indicates the rearward direction, U indicates the upward direction, D indicates the downward direction, R indicates the rightward direction, and L indicates the leftward direction.

[0045] (Overall configuration of the combine) As shown in Fig. 1, right and left crawler-type traveling devices 2 are attached to a machine body 1, and the machine body 1 is supported by the traveling devices 2. A reaping unit 3 and a driving unit 4 are provided at the front of the machine body 1, and a threshing device 5 and a grain tank 6 are provided at the rear of the machine body 1. A straw discharge device 41 is provided at the rear of the machine body 1, behind the threshing device 5 and the grain tank 6.

[0046] As the machine body 1 advances, the culms in the field are cut by the cutting unit 3, and the cut culms are conveyed rearward while being changed into a sideways position, and the bases of the culms are handed over to the feed chain 7 of the threshing device 5 and conveyed rearward. While the bases of the culms are conveyed rearward by the feed chain 7, the tips of the culms are threshed by the threshing device 5, and the grains are collected and stored in the grain tank 6.

[0047] As shown in Figures 1, 2, and 3, after the threshing process, the stalks are transported diagonally to the rear right from the threshing device 5 in a sideways position as straw by the straw transporting device 8, and are supplied from the terminal end of the straw transporting device 8 to the straw discharge device 41, from which they are discharged into the field. The straw discharge device 41 has a cover 10, a guide plate 27 (corresponding to a guide portion) (corresponding to a partition wall portion), a shaft member 34, a receiving member 28, a guide member 33, etc., as described below.

[0048] A grain discharge device 9 extends upward from the rear lower part of the grain tank 6. When the grain tank 6 becomes full, the grains stored in the grain tank 6 are discharged from the grain discharge device 9 and transferred to another truck (not shown) or the like.

[0049] (Correspondence to claims regarding the overall structure of the combine harvester) The system is equipped with a threshing device 5 that threshes the harvested stalks, a straw transporting device 8 that transports the straw after threshing in a horizontal position from the threshing device 5 to the rear, and a straw discharge device 41 that discharges the straw from the terminal end of the straw transporting device 8 into the field.

[0050] (Straw Discharge Device Cover Configuration) As shown in Figures 1, 2 and 3, a cover 10 is attached to the rear of the fuselage 1. The cover 10 is formed in a box shape with a flat right side portion 11 (corresponding to a side portion), a left side portion 12 (corresponding to a side portion), a rear side portion 13 (corresponding to a partition wall portion) and an upper side portion 14, and a large space is formed inside the cover 10. The front side portion and lower side portion of the cover 10 are open, and the upper side portion 14 is inclined downward toward the rear.

[0051] Flat rubber cover plates 15 are attached to the lower ends of the right side portion 11, the left side portion 12, and the rear side portion 13 of the cover 10. Straw dust and the like coming out of the dust outlet 5a (see FIG. 1) at the rear of the threshing device 5 enters the space inside the cover 10 and is guided downward by the cover 10, the cover plate 15, and a guide plate 27 described later, and is discharged into the field.

[0052] As shown in Figures 2 and 3, a frame 16 supporting the lower part of the grain discharge device 9 is provided on the machine body 1 along the vertical direction, and a right side part 11 of the cover 10 is attached to the frame 16 so as to be swingable about an axis P1 along the vertical direction. The state shown in Figures 1, 2 and 3 is a state in which the cover 10 is operated to a working position connected to the rear part of the threshing device 5.

[0053] The cover 10 is swung rearward around the axis P1 and operated to a non-working position rearward and away from the dust outlet 5a of the threshing device 5, allowing an operator to perform maintenance work on the inside of the threshing device 5 through the dust outlet 5a of the threshing device 5.

[0054] 1, covers 23, 24 are detachably provided across the rear of the left part of the threshing device 5 and the left part 12 of the cover 10, and the left side of the dust outlet 5a of the threshing device 5 is covered by the covers 23, 24. The covers 23, 24 are formed by bending a plate material, and the lower part of the cover 23 and the upper part of the cover 24 are connected by spot welding at multiple points.

[0055] (Configuration for holding the cover in the working position) As shown in FIGS. 4 and 5, a guide member 17 is connected to an upper portion of the front part of the left side part 12 of the cover 10. As shown in FIG.

[0056] In the guide member 17, a first portion 17a is connected to the left side portion 12 of the cover 10 and extends leftward, and a second portion 17b extends forward from the left end of the first portion 17a. A recess 17c that is open forward is provided in the second portion 17b, and a pin 17d is connected to an upper portion of the second portion 17b.

[0057] A lock member 18 is attached to the second portion 17b of the guide member 17 so as to be swingable about an axis P2 along the left-right direction. In the locking member 18, an engagement portion 18a extends forward from the front portion of the locking member 18, and a handle portion 18b extends downward from the rear portion of the locking member 18. A first opening 18c and a second opening 18d are provided in the rear portion of the locking member 18.

[0058] In the locking member 18, a pin 18e is connected to the front part of the locking member 18, and a contact part 18f is provided on the upper part of the locking member 18. A spring 19 is connected across the pin 17d of the guide member 17 and the pin 18e of the locking member 18, and the spring 19 biases the locking member 18 in the clockwise direction in FIG.

[0059] 4 and 5 is a state in which the abutment portion 18f of the locking member 18 abuts against the pin 17d of the guide member 17, causing the locking member 18 to stop at the position shown in FIGS.

[0060] A pin-shaped engaged portion 20a is provided on the frame 20 connected to the rear left part of the threshing device 5. The state shown in Figures 4 and 5 is a state in which the cover 10 is operated to the working position connected to the rear part of the threshing device 5. The engaged portion 20a of the frame 20 enters the recess 17c of the guide member 17, and the engaging portion 18a of the locking member 18 engages with the engaged portion 20a of the frame 20, and the cover 10 is fixed in the working position.

[0061] The operator holds the handle portion 18b of the locking member 18 and moves it backward, and by swinging the locking member 18 counterclockwise in Fig. 4, the engaging portion 18a of the locking member 18 can be moved downward away from the engaged portion 20a of the frame 20. This allows the operator to operate the cover 10 to the non-operating position.

[0062] (Control configuration for operation of cover to non-working position) 4 and 5, there are provided a stepped pin-shaped restraining member 21 and a retaining pin 22. With the cover 10 fixed in the working position, the worker inserts the restraining member 21 into the first opening 18c of the locking member 18 and attaches the retaining pin 22 to the end of the restraining member 21.

[0063] As a result, even if the handle portion 18b of the locking member 18 is operated backward (even if the locking member 18 is operated to swing counterclockwise in Figure 4), the restraining member 21 comes into contact with the first portion 17a of the guide member 17, and the locking member 18 is not operated to swing from the position shown in Figure 4.

[0064] When the worker operates the cover 10 to the non-operating position, the worker removes the retaining pin 22 from the restraining member 21, and removes the restraining member 21 from the first opening 18c of the locking member 18. The worker inserts the restraining member 21 into the second opening 18d of the locking member 18, and attaches the retaining pin 22 to the end of the restraining member 21.

[0065] This allows the operator to grasp handle portion 18b of locking member 18 and move it backward to swing locking member 18 counterclockwise in FIG. 4, thereby operating cover 10 to the non-work position.

[0066] When the worker operates the cover 10 to the working position and engages the engaging portion 18a of the locking member 18 with the engaged portion 20a of the frame 20 (see Figure 4), he removes the anti-slip pin 22 from the restraining member 21, removes the restraining member 21 from the second opening 18d of the locking member 18, inserts the restraining member 21 into the first opening 18c of the locking member 18, and attaches the anti-slip pin 22 to the end of the restraining member 21.

[0067] (Configuration of guide member in straw discharge device) 1, 2 and 3, a cover 29 is attached to the upper rear part of the threshing device 5, and the upper end of the straw transporting device 8 is covered by the cover 29. A frame 30 bent into a channel shape in a plan view is connected to the cover 29 and extends rearward. A bracket 31 and a hook-shaped receiving portion 32 are connected to the left and right portions of the rear part of the frame 30.

[0068] A plurality of rod-shaped guide members 33 are attached to the bracket 31 and extend downward. The position in which the guide members 33 extend downward from the bracket 31 is a guiding position A5 of the guide members 33.

[0069] The guide member 33 is attached to the bracket 31 so as to be able to swing left and right. When the guide member 33 is not in use, the worker can set the guide member 33 to a retracted position A6 (see dashed line in Figure 3) along the left and right portions of the frame 30 by lifting the guide member 33 upward and to the left and hanging it on the receiving portion 32.

[0070] When the guide member 33 is set to the retracted position A6, the guide member 33 extends leftward from the bracket 31. In this case, since the bracket 31 is connected to the right part of the left and right parts of the frame 30, even if the guide member 33 is set to the retracted position A6, the end of the guide member 33 does not extend leftward from the left part of the threshing device 5.

[0071] (Configuration of receiving member in waste straw discharge device) 1, 2 and 3, a square pipe-like frame 25 and a flat plate-like frame 26 are connected to the right and left parts of the upper part of the rear side part 13 of the cover 10 and extend obliquely downward toward the rear. A flat guide plate 27 is connected across the frames 25 and 26 in a rearward-leaning position.

[0072] The shaft member 34 is attached across the frames 25, 26. The shaft member 34 is attached to the frames 25, 26 so as to be swingable around an axis P3 along the left-right direction and so as to be movable along the axis P3.

[0073] A plurality of elongated flat receiving members 28 are connected to the right part of the shaft member 34 at intervals along the left-right direction. The receiving members 28 are disposed below the right part of the lower part of the guide plate 27 and below the guide member 33 in the guiding position A5. As will be described later, the receiving member 28 is capable of changing its position among a receiving position A1, a non-use position A3 (see FIG. 9), and a storage position A4 (see FIG. 10).

[0074] (Configuration of the posture setting device that determines the posture of the receiving member) 3, 6, 7 and 8, the attitude setting device 42 is provided on the left end of the shaft member 34. As will be described later, the attitude setting device 42 has a base member 35, an adjustment lever 36, a spring 37 (corresponding to a biasing member), an attachment member 38, a spring receiving portion 39, a spring 40, etc.

[0075] 6, 7 and 8, inside the frame 25, a base member 35 having a triangular shape in a side view is attached to a shaft member 34 so as to be rotatable about a central axis P3. A first attachment hole 35a (corresponding to the attachment portion), a second attachment hole 35b (corresponding to the attachment portion), and a third attachment hole 35c (corresponding to the attachment portion) are formed in the base member 35. Two pins 35d and 35e are connected to the base member 35.

[0076] The first contact portion 25a and the second contact portion 25b are provided on the lower part of the frame 25. Within the range in which the pin 35d of the base member 35 spans the first contact portion 25a and the second contact portion 25b of the frame 25, the base member 35 is able to swing around the axis P3.

[0077] The attitude in which the pin 35d of the board member 35 abuts on the first abutment portion 25a of the frame 25 is the reference attitude B1 of the board member 35, and the attitude in which the pin 35d of the board member 35 abuts on the second abutment portion 25b of the frame 25 is the swing attitude B2 of the board member 35. The pin 35e of the board member 35 is not located within the range of the first abutment portion 25a and the second abutment portion 25b of the frame 25, and therefore does not abut on the first abutment portion 25a and the second abutment portion 25b of the frame 25.

[0078] An adjustment lever 36 is attached to the upper part of the frame 25 so as to be swingable up and down about an axis P4 along the left-right direction. By attaching the adjustment lever 36 to a lever guide 25c of the frame 25, the up-down position of the adjustment lever 36 can be set arbitrarily.

[0079] A spring 37 is attached across the pins 35d, 35e of the base member 35 and the adjustment lever 36, and the base member 35 is biased to the reference position B1 by the spring 37. The biasing force of the spring 37 is changed by vertically changing the attachment position of the adjustment lever 36 in the lever guide 25c of the frame 25.

[0080] Inside the frame 25, a mounting member 38 is connected to the shaft member 34, and a pin 38a is connected to an end of the mounting member 38. Outside the frame 25, a spring bearing portion 39 is connected to the shaft member 34, and a spring 40 is provided between the frame 25 and the spring bearing portion 39, and the spring 40 urges the shaft member 34 to the right (upward in FIG. 8).

[0081] (Function of the posture setting device that determines the posture of the receiving member) As shown in Figures 6, 7 and 8, by operating the receiving member 28 (shaft member 34) to the left (downward in Figure 8), the pin 38a of the mounting member 38 is removed from the first mounting hole 35a, the second mounting hole 35b and the third mounting hole 35c of the base member 35.

[0082] Next, the receiving member 28 (shaft member 34) is rotated relative to the base member 35 and rotated to the right (upward in Figure 8), so that the pin 38a of the shaft member 34 (mounting member 38) is inserted into one of the first mounting hole 35a, the second mounting hole 35b, and the third mounting hole 35c of the base member 35 and attached.

[0083] The spring 40 biases the receiving member 28 (shaft member 34) to the right (upward in Figure 8), and biases the pin 38a of the shaft member 34 (mounting member 38) in the direction toward the first mounting hole 35a (second mounting hole 35b, third mounting hole 35c) of the base member 35.

[0084] When pin 38a of shaft member 34 (mounting member 38) is inserted into one of the first mounting hole 35a, the second mounting hole 35b, and the third mounting hole 35c of the base member 35, the mounting posture of the receiving member 28 relative to the base member 35 is changed, and the receiving member 28 (shaft member 34) and the base member 35 become able to swing up and down together around the axis P3.

[0085] (Receiving position and downward position of receiving member) The state shown in Figures 6, 7, and 8 is a state in which the pin 38a of the shaft member 34 (mounting member 38) is inserted into and mounted in the first mounting hole 35a of the base member 35, and the receiving member 28 is mounted at the first mounting position relative to the base member 35.

[0086] 6, 7 and 8, when the base member 35 is in the reference position B1, the receiving member 28 is in the receiving position A1 extended obliquely upward and rearward from the shaft member 34 (axis center P3). The spring 37 biases the base member 35 to the reference position B1, and biases the receiving member 28 to the receiving position A1.

[0087] In the receiving posture A1, the swinging end (rear end) of the receiving member 28 is located at a position higher than the base (shaft member 34) of the receiving member 28. The lower part of the guide member 33 in the guiding posture A5 is located between the swinging ends (rear end) of the receiving member 28 in the receiving posture A1, and the swinging end (rear end) of the receiving member 28 and the lower part of the guide member 33 overlap in a side view.

[0088] When the base member 35 is in the swing position B2 (see the dashed line in FIG. 6), the receiving member 28 is in the downward position A2 extended diagonally downward and rearward from the shaft member 34 (axis center P3). The receiving member 28 in the downward position A2 is located rearward of an imaginary vertical line C1 passing through the axis center P3 in a side view, and is along an imaginary line C2 extending diagonally downward from the guide plate 27 along the guide plate 27.

[0089] (Receiving member non-use and storage positions) The state shown in Figure 9 is a state in which pin 38a of shaft member 34 (mounting member 38) is inserted into and mounted in second mounting hole 35b of base member 35, and receiving member 28 is mounted at a second mounting position relative to base member 35.

[0090] 9, when the base member 35 is in the reference position B1 (see FIG. 7), the receiving member 28 is in the unused position A3 extended obliquely downward and forward from the shaft member 34 (axis center P3). The spring 37 biases the base member 35 to the reference position B1, and biases the receiving member 28 to the unused position A3.

[0091] The receiving member 28 in the unused position A3 is located forward of an imaginary vertical line C1 passing through the axis P3 in a side view. When the base member 35 swings from the reference position B1 to the swing position B2 (see FIG. 7), the receiving member 28 swings forward from the unused position A3.

[0092] The state shown in Figure 10 is a state in which pin 38a of shaft member 34 (mounting member 38) is inserted into and mounted in third mounting hole 35c of base member 35, and receiving member 28 is mounted at the third mounting position relative to base member 35.

[0093] 10, when the base member 35 is in the reference position B1 (see FIG. 7), the receiving member 28 is in the storage position A4 extended upward from the shaft member 34 (axis core P3). The spring 37 biases the base member 35 to the reference position B1, and biases the receiving member 28 to the storage position A4.

[0094] (Correspondence to claims regarding receiving parts) - 1 The straw discharge device 41 has a shaft member 34 that is arranged concentrically with the axis P3 and is swingable around the axis P3, and a plurality of receiving members 28 are attached to the shaft member 34 at intervals along the left-right direction.

[0095] The shaft member 34 is provided with a position setting device 42 that can set a receiving position A1 and a non-use position A3 and is provided at one of the left and right ends of the shaft member 34. The attitude setting device 42 has a base member 35 which can swing to a reference attitude B1 in one direction around an axis P3, a biasing member (spring 37) which biases the base member 35 to the reference attitude B1, and mounting portions (first mounting hole 35a, second mounting hole 35b) which can mount the shaft member 34 to a first mounting position and a second mounting position relative to the base member 35 and change its position.

[0096] When the shaft member 34 is attached to the base member 35 at the first mounting position, when the base member 35 is positioned in the reference position B1, the receiving member 28 is positioned in the receiving position A1, and when the base member 35 swings to one side from the reference position B1, the receiving member 28 swings downward from the receiving position A1. When the shaft member 34 is attached to the base member 35 at the second attachment position, when the base member 35 is in the reference position B1, the receiving member 28 is in the non-use position A3.

[0097] (Correspondence to claims regarding receiving parts) - 2 The receiving member 28 is capable of being changed to a storage position A4 in which it is extended upward from the axis P3. A position setting device 42 is provided at one of the left and right ends of the shaft member 34 and can set the receiving position A1, the non-use position A3, and the storage position A4.

[0098] The attitude setting device 42 has a base member 35 which can swing to a reference attitude B1 in one direction around an axis P3, a biasing member (spring 37) which biases the base member 35 to the reference attitude B1, and mounting portions (first mounting hole 35a, second mounting hole 35b, third mounting hole 35c) which can mount the shaft member 34 to a first mounting position, a second mounting position and a third mounting position relative to the base member 35 and change its position.

[0099] When the shaft member 34 is attached to the base member 35 at the first mounting position, when the base member 35 is positioned in the reference position B1, the receiving member 28 is positioned in the receiving position A1, and when the base member 35 swings to one side from the reference position B1, the receiving member 28 swings downward from the receiving position A1. When the shaft member 34 is attached to the base member 35 at the second attachment position, when the base member 35 is in the reference position B1, the receiving member 28 is in the non-use position A3. When the shaft member 34 is attached to the base member 35 at the third attachment position, when the base member 35 is in the reference position B1, the receiving member 28 is in the storage position A4.

[0100] (Working mode of the straw discharge device) - 1 6, 7 and 8, in an operation mode in which a predetermined amount of waste straw is discharged into a farm field in a bundled state, the worker inserts pin 38a of shaft member 34 (mounting member 38) into first mounting hole 35a of base member 35 to mount it, and mounts receiving member 28 at a first mounting position relative to base member 35. Due to the biasing force of spring 37, base member 35 is positioned at reference position B1, and receiving member 28 is positioned at receiving position A1.

[0101] As shown in Figures 1, 2, and 3, after threshing, the stalks are transported diagonally to the rear right from the threshing device 5 in a sideways position as straw by the straw transport device 8, and fall from the end of the straw transport device 8.

[0102] The straw falls along the upper portion 14 of the cover 10 and the guide plate 27, and is received and piled up by the receiving member 28 in the receiving position A1. In this case, since the guide member 33 is in the guiding position A5, the amount of straw that falls from the receiving member 28 to the rear side is reduced.

[0103] As shown in Figures 6, 7, and 8, when the weight of the waste straw accumulated on the receiving member 28 reaches a predetermined weight corresponding to the biasing force of the spring 37, the base member 35 swings from the reference position B1 toward the swinging position B2, and the receiving member 28 swings toward the downward position A2 (see dashed line in Figure 6).

[0104] As a result, the receiving member 28 swings downward from the receiving position A1 and moves downward away from the lower part of the guide member 33, and the straw is discharged from the receiving member 28 into the field. After this, the base member 35 returns to the reference position B1 by the spring 37, and the receiving member 28 returns to the receiving position A1. Thereafter, this state is repeated.

[0105] In this case, when the receiving member 28 reaches the downward position A2 (see dotted line in Figure 6) (when the base member 35 reaches the swing position B2), the pin 35d of the base member 35 hits the second contact portion 25b of the frame 25 and is stopped, so that the receiving member 28 cannot swing forward beyond the downward position A2.

[0106] Due to a change in the weight of the waste straw received and piled up by the receiving member 28, the receiving member 28 may swing downward from the receiving position A1 and then return to the receiving position A1 before reaching the downward position A2 (see dotted line in Figure 6). Due to a change in the weight of the waste straw received and piled up by the receiving member 28, the receiving member 28 may swing from the receiving position A1 to the downward position A2, stop at the downward position A2, and then return to the receiving position A1.

[0107] (Correspondence to claims regarding the working mode of the straw discharge device) The straw discharge device 41 has a receiving member 28 that is swingable about an axis P3 that extends in the left-right direction. The straw discharge device 41 has a receiving member 28 that is swingable about an axis P3 along the left-right direction, and a guide member 33 that extends downward from a position above the receiving member 28.

[0108] When not receiving any waste straw, the receiving member 28 extends rearward from the axis P3 and is in a receiving position A1 in which the swinging end of the receiving member 28 is higher than the base of the receiving member 28. When not receiving any waste straw, the receiving member 28 extends rearward from the axis P3 and is positioned in a receiving position A1 in which the swinging end of the receiving member 28 overlaps with the lower part of the guide member 33 in a side view.

[0109] The receiving member 28 is capable of receiving waste straw that has fallen from the terminal end of the waste straw conveying device 8 in the receiving position A1, and when the weight of the received waste straw reaches a predetermined weight set in advance, it swings downward from the receiving position A1 to discharge the waste straw into the field and then returns to the receiving position A1.

[0110] (Working mode of the straw discharge device) - 2 9, in an operation mode in which straw is continuously discharged into a farm field, an operator inserts pin 38a of shaft member 34 (mounting member 38) into second mounting hole 35b of base member 35 to mount receiving member 28 at the second mounting position relative to base member 35. Due to the biasing force of spring 37, base member 35 is positioned in reference position B1, and receiving member 28 is positioned in non-use position A3.

[0111] The straw that falls from the end of the straw transport device 8 falls along the upper part 14 of the cover 10 and the guide plate 27, and is discharged into the field without coming into contact with the receiving member 28 in the unused position A3. In this case, the operator may set the guide member 33 to the retracted position A6 (see the dashed line in FIG. 3).

[0112] (Correspondence to claims regarding the working mode of the straw discharge device) The receiving member 28 is capable of being changed to a non-use position A3 in which it extends downward from the axis P3. The receiving member 28 is capable of being changed to a non-use position A3 in which the receiving member 28 is spaced downward from the lower portion of the guide member 33.

[0113] The waste straw transport device 8 is provided with a guide portion (guide plate 27) in a downwardly-descending position that guides the waste straw that has fallen from the end portion thereof to a receiving member 28 in a receiving position A1. The unused position A3 is set in a position forward of an imaginary line C2 that extends obliquely downward from the guide portion (guide plate 27) along the guide portion (guide plate 27) in a side view. The non-use position A3 is set to a position forward of an imaginary vertical line C1 passing through the axis P3 in a side view. The guide member 33 is capable of changing its position to a retracted position A6 in which it is positioned above the receiving member 28 in the receiving position A1.

[0114] (Working mode of the straw discharge device) - 3 As shown in Fig. 10, for example, when the combine harvester is loaded onto a bed of a truck or the like or a container for transportation, the operator inserts pin 38a of shaft member 34 (mounting member 38) into third mounting hole 35c of base member 35 to mount it, and mounts receiving member 28 at a third mounting position relative to base member 35. Due to the biasing force of spring 37, base member 35 is positioned at reference position B1, and receiving member 28 is positioned at storage position A4. The operator sets guide member 33 to retracted position A6 (see dashed line in Fig. 3).

[0115] This creates a space between the lower part of the rear of the combine (machine body 1) (the cover plate 15 and the receiving member 28) and the floor of the loading platform (container). The reaping unit 3 removed from the machine body 1 and other transported items are placed in this space.

[0116] (Correspondence to claims on the cover) A dust outlet 5a is provided at the rear of the threshing device 5 and is used to discharge straw dust and other waste generated by the threshing device 5. A partition wall portion (rear side portion 13 of cover 10, guide plate 27) is provided between the dust outlet 5a and the receiving member 28 to guide the straw waste from the dust outlet 5a to the farm field.

[0117] The partition wall portion (guide plate 27) is a guide portion (guide plate 27) in a rearward-leaning position that guides the waste straw that has fallen from the terminal end of the waste straw transport device 8 to the receiving member 28 in the receiving position A1. A cover 10 is provided having an upper side portion 14, right and left side portions (right side portion 11 and left side portion 12), and a rear side portion 13, and is provided between the dust outlet 5a and the receiving member 28, and the rear side portion 13 is a partition wall portion.

[0118] (First Alternative Embodiment of the Invention) As shown in Fig. 11, a waste straw cutter 43 may be provided inside the cover 10. The waste straw cutter 43 is capable of cutting the waste straw into small pieces of a predetermined short length.

[0119] According to the above-mentioned configuration, the upper portion 14 of the cover 10 is preferably configured so as to be capable of being opened and closed vertically with the rear portion of the upper portion 14 as a fulcrum. When the upper part 14 of the cover 10 is operated to the closed position (see solid line in Figure 11), the waste straw falls from the end of the waste straw conveying device 8, along the upper part 14 of the cover 10 and the guide plate 27, and into the waste straw discharge device 41 (receiving member 28 in receiving position A1). When the upper part 14 of the cover 10 is operated to the open position (see dotted line in Figure 11), the waste straw enters the inside of the cover 10 from the end of the waste straw conveying device 8 and is supplied to the waste straw cutter 43 where it is cut into small pieces.

[0120] (Second Alternative Embodiment of the Invention) In the base member 35, the first mounting hole 35a and the second mounting hole 35b may be provided, and the third mounting hole 35c (storage position A4) may be eliminated.

[0121] According to the above-described configuration, for example, when the combine harvester is loaded onto the bed of a truck or the like or into a container for transport, an operator inserts and attaches the pin 38a of the shaft member 34 (mounting member 38) into the second mounting hole 35b of the base member 35, attaches the receiving member 28 to the second mounting position relative to the base member 35, and positions the receiving member 28 in the non-use position A3.

[0122] (Third Alternative Embodiment of the Invention) In the receiving member 28, the non-use position A3 may be set to the same position as the lower position A2. In the receiving member 28, the non-use position A3 may be set to a position between the lower position A2 and the vertical line C1, or may be set to the position of the vertical line C1. An attitude setting device 42 may be provided at the right end of the shaft member 34 .

[0123] (Fourth Alternative Embodiment of the Invention) A feed chain 7 may be provided on the right side of the threshing device 5, and the waste straw may be transported diagonally left and rearward from the threshing device 5 in a sideways position by a waste straw transporting device 8. According to the above-mentioned configuration, the receiving member 28 may be provided on the left side of the shaft member 34, and the guide member 33 may be attached to the left side of the left and right portions of the frame 30. [Industrial Applicability]

[0124] The present invention can be applied to a head-feeding type combine harvester. [Explanation of symbols]

[0125] 5. Threshing Equipment 5a Dust exhaust port 8. Waste straw transport device 10. Cover 11 Right side (side) 12 Left side (side) 13 Rear side (partition wall) 14 Upper part 27 Guide board (guide section) (partition wall section) 28 Receiving member 33 Guide member 34 Shaft member 35 Substrate materials 35a First mounting hole (mounting portion) 35b Second mounting hole (mounting portion) 35c 3rd mounting hole (mounting part) 37 Spring (biasing member) 41 Waste straw discharge device 42 Attitude setting device A1 Acceptance attitude A3 Non-use position A4 Storage position A6 Retreat position B1 Reference posture C1 plumb line C2 Virtual Line P3 axis center

Claims

1. a threshing device for threshing the harvested stalks; A waste straw conveying device that conveys the waste straw after the threshing process in a sideways position from the threshing device to the rear; A combine harvester comprising a waste straw discharge device that discharges waste straw from the end of the waste straw conveying device into a farm field, The straw discharge device has a receiving member that can swing around an axis along the left-right direction, The receiving member is extended rearward from the axis when not receiving the waste straw, and is in a receiving position in which the swing end of the receiving member is higher than the base of the receiving member, The receiving member is capable of receiving waste straw that has fallen from the terminal end of the waste straw conveying device in the receiving position, and when the weight of the received waste straw reaches a predetermined weight set in advance, the receiving member swings downward from the receiving position to discharge the waste straw into the field and returns to the receiving position. The combine harvester has a receiving member that can be changed to an unused position in which it extends downward from the shaft core.

2. a threshing device for threshing the harvested stalks; A waste straw conveying device that conveys the waste straw after the threshing process in a sideways position from the threshing device to the rear; A combine harvester comprising a waste straw discharge device that discharges waste straw from the end of the waste straw conveying device into a farm field, The straw discharge device has a receiving member that can swing around an axis along the left-right direction, and a guide member that extends downward from a position above the receiving member, The receiving member extends rearward from the axis when not receiving the straw, and is positioned in a receiving position in which the swing end of the receiving member overlaps with the lower part of the guide member in a side view, The receiving member is capable of receiving waste straw that has fallen from the terminal end of the waste straw conveying device in the receiving position, and when the weight of the received waste straw reaches a predetermined weight set in advance, the receiving member swings downward from the receiving position to discharge the waste straw into the field and returns to the receiving position. The receiving member is capable of being changed to an unused position away from the lower portion of the guide member.

3. The combine harvester according to claim 2 , wherein the guide member is capable of being changed to a retracted position in which the guide member is positioned above the receiving member in the receiving position.

4. A guide portion in a rearward downward position is provided to guide the waste straw that has fallen from the end portion of the waste straw conveying device to the receiving member in the receiving position, The combine harvester according to claim 1 or 2, wherein the unused position is set in a position forward of an imaginary line extending obliquely downward from the guide portion along the guide portion in a side view.

5. The combine harvester according to claim 4, wherein the unused position is set to a position forward of an imaginary vertical line passing through the shaft center in a side view.

6. The straw discharge device has a shaft member that is concentric with the shaft core and can swing around the shaft core, A plurality of the receiving members are attached to the shaft member at intervals along the left-right direction, 3. The combine harvester according to claim 1, further comprising a position setting device that is capable of setting the receiving position and the unused position and that is provided at one of the left and right ends of the shaft member.

7. the attitude setting device has a base member that is swingable about the axis to a reference attitude and in one direction from the reference attitude, a biasing member that biases the base member to the reference attitude, and a mounting portion that is capable of mounting the axis member to a first mounting position and a second mounting position relative to the base member and changing the position thereof, When the shaft member is attached to the base member at the first attachment position, when the base member is positioned at the reference position, the receiving member is positioned at the receiving position, and when the base member swings in one direction from the reference position, the receiving member swings downward from the receiving position, The combine harvester according to claim 6 , wherein when the shaft member is attached to the base member at the second attachment position, the receiving member is positioned in the unused position when the base member is positioned in the reference position.

8. The combine harvester according to claim 1 or 2, wherein the receiving member is capable of being changed to a stored position in which the receiving member is extended upward from the shaft core.

9. The straw discharge device has a shaft member that is concentric with the shaft core and can swing around the shaft core, A plurality of the receiving members are attached to the shaft member at intervals along the left-right direction, The combine harvester according to claim 8, further comprising a position setting device that is capable of setting the receiving position, the non-use position and the stored position and is provided at one of the left and right ends of the shaft member.

10. the attitude setting device has a base member that is swingable about the axis to a reference attitude and in one direction from the reference attitude, a biasing member that biases the base member to the reference attitude, and a mounting portion that is mountable to and positionable at a first mounting position, a second mounting position, and a third mounting position with respect to the base member, When the shaft member is attached to the base member at the first attachment position, when the base member is positioned at the reference position, the receiving member is positioned at the receiving position, and when the base member swings in one direction from the reference position, the receiving member swings downward from the receiving position, When the shaft member is attached to the base member at the second attachment position, when the base member is positioned at the reference position, the receiving member is positioned at the unused position, The combine harvester according to claim 9 , wherein, when the shaft member is attached to the base member at the third attachment position, the receiving member is positioned in the stored position when the base member is positioned in the reference position.

11. A dust outlet provided at the rear of the threshing device for discharging straw dust and the like generated by the threshing device; 3. The combine harvester according to claim 1, further comprising a partition wall portion disposed between the dust outlet and the receiving member for guiding straw dust from the dust outlet to a farm field.

12. The combine harvester according to claim 11, wherein the partition wall portion is a guide portion in a rearward-leaning position that guides the waste straw that has fallen from the terminal end of the waste straw transporting device to the receiving member in the receiving position.

13. A cover having an upper portion, right and left side portions, and a rear portion is provided between the dust outlet and the receiving member. The combine according to claim 11, wherein the rear side portion is the partition wall portion.

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