Sugar cane harvester

Abstract

To provide a sugar cane harvester that allows a support member for supporting a rotation body to be attached to an accurate position easily in the sugar cane harvester.SOLUTION: A sugar cane harvester is equipped with a conveyance device for conveying crops reaped from a farm field to the back of a machine body. The conveyance device includes right and left side walls 22, a rotation body rotatable around a shaft core along a right-left direction, a bearing mechanism 43b for rotatably supporting the rotation body, and a support member 43a for supporting the bearing mechanism 43b. The side walls 22 are provided with positioning holes (62L1, 62L2, 62R1, 62R2). The support member 43a is provided with positioning protrusions (61L1, 61L2, 61R1, 61R2) that can be inserted into the positioning holes (62L1, 62L2, 62R1, 62R2). The support member 43a is attached to the side walls 22 in the state that the positioning protrusions (61L1, 61L2, 61R1, 61R2) are inserted into the positioning holes (62L1, 62L2, 62R1, 62R2).SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a sugarcane harvester equipped with a conveying device for conveying crops cut from a field toward the rear of the machine body.

Background Art

[0002] As a conventional sugarcane harvester, for example, as described in Patent Document 1, there is one equipped with a conveying device for conveying crops cut from a field toward the rear of the machine body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a sugarcane harvester, the conveying device is provided with upper and lower rotators that are rotatable around an axis along the left-right direction, and the rotators are arranged at intervals along the conveying direction of the crops.

[0005] Further, in the conveying device of the sugarcane harvester, there are some in which motors for driving the rotators are provided on the respective rotators. At this time, there are some in which the motors are attached to the rotators in a state where the output shafts of the motors are inserted into the rotators in the direction in which the rotation shafts of the rotators extend through holes formed in side walls of the conveying device or the like.

[0006] Some such conveying devices have a configuration in which a bearing mechanism for supporting the rotator is supported by a support member, and further, the support member is supported by a side wall of the conveying device.

[0007] In such a conveying device, during manufacturing, if the support member is not attached to the exact position on the side wall, there may be problems such as the rotating body not rotating properly. To attach the support member to the exact position on the side wall, it involves an increase in man-hours and working time, such as performing measurements, etc., so there was room for improvement.

[0008] Therefore, an object of the present invention is to provide a means for facilitating the assembly of a conveying device that conveys crops cut from a field toward the rear of the machine body in a sugarcane harvester.

Means for Solving the Problems

[0009] The sugarcane harvester of the present invention is provided with a conveying device that conveys crops cut from a field toward the rear of the machine body. The conveying device includes left and right side walls, a rotating body rotatable around an axis along the left-right direction, a bearing mechanism that rotatably supports the rotating body, and a support member that supports the bearing mechanism. A positioning hole is provided in the side wall, and a positioning protrusion that can be inserted into the positioning hole is provided in the support member. The support member is attached to the side wall with the positioning protrusion inserted into the positioning hole.

[0010] According to the present invention, when attaching the support member that supports the rotating body via the bearing mechanism to the side wall, it is only necessary to attach the support member with the positioning protrusion provided on the support member inserted into the positioning hole provided on the side wall, and it becomes possible to attach the support member to the exact position on the side wall. As a result, it becomes possible to easily attach the support member to the exact position, and the assembly of the conveying device can be facilitated.

[0011] In the present invention, it is preferable that the rotating body is a chopper for cutting crops.

[0012] Generally, a chopper is provided with a blade or the like for cutting crops. For example, when the blade is worn, it may be frequently necessary to remove the support member and further remove the rotating body in order to replace the blade or the like. Even in such a case, according to the above-described configuration, it is possible to easily attach the support member that supports the chopper to the accurate position of the side wall.

[0013] In the present invention, it is preferable that the support member is a gear case that houses a plurality of gears.

[0014] The gears housed in the gear case may rotate in conjunction with the rotation of the rotating body. The gear case housing such gears needs to be attached to the accurate position of the side wall. According to the above-described configuration, it is possible to easily attach the gear case that supports the rotating body and houses a plurality of gears to the accurate position of the side wall.

[0015] In the present invention, it is preferable that a flywheel is housed in the gear case.

[0016] Generally, a flywheel is heavy, and the gear case housing such a flywheel becomes heavy. According to the above-described configuration, even a heavy gear case can be easily attached to the accurate position of the side wall.

[0017] In the present invention, it is preferable that a motor, which is a driving source of the rotating body, is supported by the support member.

[0018] Generally, a motor is heavy, and the support member supporting such a motor becomes heavy. According to the above-described configuration, even a heavy support member can be easily attached to the accurate position of the side wall.

[0019] In the present invention, it is preferable that a plurality of the positioning protrusions are provided on the support member, and a plurality of the positioning holes corresponding to the positioning protrusions are provided on the side wall.

[0020] According to this configuration, by arranging a plurality of positioning holes and positioning protrusions on the support member and the side wall, it becomes possible to attach the support member to the side wall at a more accurate position.

[0021] In the present invention, it is preferable that the positioning holes are provided at the same positions facing each other on the left and right side walls.

[0022] According to this configuration, by using a jig or the like that is inserted into the left and right side walls, the positions of the left and right side walls can be made accurate. In this state, by welding a frame or the like provided across the left and right side walls, it becomes possible to manufacture a conveying device configured such that the left and right side walls are in accurate positions.

[0023] The sugarcane harvester of the present invention is provided with a conveying device that conveys crops cut from a field toward the rear of the machine body. The conveying device includes left and right side walls, a rotating body that can rotate around an axis along the left - right direction, a motor attached in a state of being connected to the rotating body, and a support member that supports the motor. The side wall is provided with a tool insertion hole into which a tool can be inserted. By moving the rotating body or the support member using the tool inserted into the tool insertion hole, the position adjustment between the rotating body and the support member can be achieved.

[0024] According to this invention, it becomes possible to easily adjust the positions of the rotating body and the support member only by moving the rotating body and the support member with the tool inserted into the tool insertion hole. For example, when reconnecting the motor removed for maintenance or the like to the rotating body again, it may be necessary to adjust the positions of the rotating body and the support member, but even in such a case, it becomes possible to easily perform the position adjustment.

[0025] In the present invention, it is preferable that the rotating body is provided with an insertion hole into which the output shaft of the motor can be inserted, the support member is provided with a through hole through which the output shaft passes, and the positions of the insertion hole and the through hole can be adjusted by moving the rotating body or the support member using a tool inserted into the tool insertion hole.

[0026] Some conveying devices are configured such that the output shaft of the motor is inserted into the insertion hole of the rotating body through the through hole of the support member, thereby connecting the motor and the rotating body. In such a conveying device, when reconnecting the removed motor to the rotating body during maintenance or the like, it is necessary to adjust the positions of the insertion hole and the through hole. According to the above configuration, it becomes possible to easily adjust the positions of the insertion hole and the through hole, and the assembly of the conveying device can be facilitated.

[0027] In the present invention, it is preferable that the insertion hole is spline-fitted with the output shaft.

[0028] When the insertion hole and the output shaft are spline-fitted, it may be necessary to adjust the positions of the rotating body and the support member when reconnecting the removed motor to the rotating body during maintenance or the like. According to the above configuration, even in such a case, it becomes possible to easily perform the position adjustment.

[0029] In the present invention, the rotating body has an upper rotating body and a lower rotating body disposed below the upper rotating body, and is configured to convey a crop while sandwiching it between the upper rotating body and the lower rotating body. It is preferable that the support member that supports the motor connected to the upper rotating body is swingably supported by the side wall.

[0030] According to this configuration, even in a conveying device including an upper rotating body and a lower rotating body and a large number of rotating bodies, it becomes possible to easily perform the position adjustment.

[0031] In the present invention, it is preferable that a plurality of the tool insertion holes are provided for one of the rotating bodies.

[0032] According to this configuration, the tool insertion hole for inserting the tool can be selected according to the direction of moving the rotating body, and the position adjustment can be performed more preferably.

Brief Description of the Drawings

[0033]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0034] The modes for carrying out the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of arrow F in the figure is "front", the direction of arrow B is "rear", the direction of arrow L is "left", and the direction of arrow R is "right". Also, the direction of arrow U in the figure is "up", and the direction of arrow D is "down".

[0035] 〔Overall Configuration of Sugarcane Harvester〕 As shown in FIG. 1, the body of the sugarcane harvester as a whole is supported by the left and right front wheels 1 as traveling devices and the left and right rear wheels 2 as traveling devices.

[0036] The cutting unit 3, the conveying device 4 provided in a rear-rising inclined posture, the separating device 5 which is a post-treatment device connected to the rear part of the conveying device 4, the conveyor 6 which is a post-treatment device extending upward in an inclined posture from a position below the separating device 5, the operation unit 7 provided above the cutting unit 3, and the engine 8 are provided on the machine body.

[0037] With the above configuration, as the machine body advances, the base of the crop in the field is cut by the cutting blade 11 of the cutting unit 3 and the crop is cut, and the crop cut by the cutting blade 11 is conveyed upward to the rear of the machine body by the conveying device 4.

[0038] When the crop reaches the conveyance end portion of the conveying device 4, the crop is shredded at the conveyance end portion of the conveying device 4 and supplied to the separating device 5. While the shredded crop passes downward inside the separating device 5, it falls onto the front portion of the conveyor 6. Sorting air is supplied to the crop inside the separating device 5, and the debris is blown off, separated, and discharged.

[0039] The crop that has fallen onto the front portion of the conveyor 6 is conveyed upward to the rear by the conveyor 6, and is discharged from the discharge portion at the upper part of the rear portion of the conveyor 6 and released onto the loading platform of a transport vehicle (not shown) such as a truck following alongside for collection.

[0040] 〔Configuration of the conveying device〕 The conveying device 4 is shown in FIGS. 2 to 4. FIG. 2 is a side view of the conveying device 4 viewed from the left side, showing the left side wall 22. FIG. 3 is a side view of the conveying device 4 viewed from the left side in the same manner as FIG. 2, but the left side wall 22 is omitted and the right side wall 22 is shown. FIG. 4 is a side view of the conveying device 4 viewed from the right side, showing the right side wall 22.

[0041] As shown in FIGS. 2 to 4, in the conveying device 4, left and right side walls 22 are provided, and a plurality of frames 23 are connected across the upper and lower portions of the left and right side walls 22, and a box-shaped structure is formed by the side walls 22 and the frames 23.

[0042] Inside the aforementioned structure, six sets of rotating body units 31, 32, 33, 34, 35, and 36 are supported. The front part of the side wall 22 is connected to the rear part of the cutting part 3, and the rear part of the side wall 22 is connected to the separating device 5 (see FIG. 1).

[0043] Each of the rotating body units 31 to 36 has an upper rotating body 31a, 32a, 33a, 34a, 35a, 36a (each corresponding to the "upper rotating body" of the present invention) that can rotate around an axis along the left-right direction, and a lower rotating body 31b, 32b, 33b, 34b, 35b, 36b (each corresponding to the "lower rotating body" of the present invention) that can rotate around an axis along the left-right direction. The rotating body units 31 to 36 are arranged at intervals along the conveying direction of the crop.

[0044] The upper rotating bodies 31a to 36a are rotationally driven counterclockwise in FIG. 2 by the driving force of the hydraulic motor M, which is the driving source. The lower rotating bodies 31b to 36b are rotationally driven clockwise in FIG. 2 by the driving force of the hydraulic motor M, which is the driving source. With these configurations, the upper rotating bodies 31a to 36a and the lower rotating bodies 31b to 36b are rotationally driven in opposite directions to each other.

[0045] As shown in FIG. 7, the rotating body 31a includes a cylindrical main body part 25 and a plurality of scraping members 26. The scraping member 26 is a plate-like member with an end formed in an uneven shape, and is radially connected to the outer peripheral part of the cylindrical main body part 25. Although not shown, the rotating bodies 32a to 35a and the lower rotating bodies 32b to 35b also have the same configuration as the rotating body 31a.

[0046] Among the lower rotating bodies 31b to 35b, the rotating body 31b located at the frontmost position has scraping members 26F whose left and right both-side end parts are configured in a shape narrower than the width of the left and right central parts, and are radially connected to the main body part 25, as shown in FIG. 8.

[0047] In the rotating body unit 36 located at the conveyance end portion of the conveyance device 4, in the upper rotating body 36a and the lower rotating body 36b, a plurality of horizontally long slitting blades 27 are radially connected to the outer peripheral portion of the cylindrical main body portion 25. The rotating body 36a and the rotating body 36b of the rotating body unit 36 are so-called choppers for cutting crops.

[0048] With the above configuration, when the base of the crop cut by the cutting unit 3 is supplied to the conveyance device 4, the base of the crop is drawn between the upper rotating body 31a and the lower rotating body 31b. The crop is conveyed with the base of the crop leading with respect to the upper part of the crop while being sandwiched between the upper rotating bodies 31a to 35a and the lower rotating bodies 31b to 35b.

[0049] When the crop reaches the conveyance end portion of the conveyance device 4, the crop is sandwiched between the upper rotating body 36a and the lower rotating body 36b, shredded by the slitting blades 27, and supplied to the upper part of the separation device 5.

[0050] 〔Support configuration of the upper rotating body of the rotating body unit in the conveyance device〕 As shown in FIGS. 2 to 4, swing support members 28 are provided for swingably supporting the upper rotating bodies 31a to 35a vertically with respect to the rotating body units 31 to 35.

[0051] In the conveyance device 4, the swing support members 28 are supported by the left and right side walls 22 so as to be swingable vertically around the axial centers P1, P2, P3, P4, P5 along the left - right direction.

[0052] As shown in FIG. 2, on the left side wall 22, a left upper bearing mechanism 44 (corresponding to the "bearing mechanism" of the present invention) for rotatably supporting the rotating bodies 31a, 33a, 35a is supported by the left swing support member 28.

[0053] As shown in FIG. 4, on the right side wall 22, a right upper bearing mechanism 44 for rotatably supporting the rotating bodies 32a, 34a is supported by the right swing support member 28.

[0054] As shown in FIG. 2, on the left side wall 22, a left upper motor support member 41 (corresponding to the "support member" of the present invention) that supports a hydraulic motor M for driving the rotating bodies 32a and 34a is supported by the left swing support member 28.

[0055] As shown in FIG. 4, on the right side wall 22, a right upper motor support member 41 that supports a hydraulic motor M for driving the rotating bodies 31a, 33a, and 35a is supported by the right swing support member 28.

[0056] As shown in FIG. 7, an insertion hole 51 into which the output shaft Ms of the hydraulic motor M can be inserted is formed in the rotating body 31a. A through hole 41h through which the output shaft Ms passes is formed in the right upper motor support member 41. Note that FIG. 7 shows the configuration of the rotating body 31a, but the rotating bodies 32a to 35a also have the same configuration.

[0057] The insertion hole 51 is a hole extending in the direction in which the rotation axes of the rotating bodies 31a to 35a extend. The output shaft Ms passes through the through hole 41h and is attached in a state of being spline-fitted with the insertion hole 51, thereby being connected to the rotating bodies 31a to 35a. In the rotating bodies 32a and 34a, the insertion hole 51 is formed on the left side wall 22 side. In the rotating bodies 31a, 33a, and 35a, the insertion hole 51 is formed on the right side wall 22 side.

[0058] With this configuration, the rotating bodies 31a, 33a, and 35a are configured to be supported by the left side wall 22 via the left upper bearing mechanism 44 and the left swing support member 28, and are configured to be supported by the right side wall 22 via the right swing support member 28, the right upper motor support member 41, and the hydraulic motor M.

[0059] Also, the rotating bodies 32a and 34a are configured to be supported by the left side wall 22 via the left swing support member 28, the left upper motor support member 41, and the hydraulic motor M, and are configured to be supported by the left side wall 22 via the right upper bearing mechanism 44 and the right swing support member 28.

[0060] As shown in FIGS. 2 to 4, an arcuate opening 22a is formed in the side wall 22 in a side view. The upper motor support member 41 and the upper bearing mechanism 44 move within the opening 22a when the swing support member 28 swings.

[0061] 〔Support structure of the lower rotating body in the conveying device〕 As shown in FIG. 2, a lower motor support member 42 (corresponding to the "support member" of the present invention) that supports a hydraulic motor M for driving the rotating bodies 31b, 32b, and 35b is supported on the left side wall 22.

[0062] As shown in FIG. 4, a lower motor support member 42 (corresponding to the "support member" of the present invention) that supports a hydraulic motor M for driving the rotating bodies 32b, 33b, 34b, and 35b is supported on the right side wall 22.

[0063] As shown in FIG. 8, an insertion hole 51 into which the output shaft Ms of the hydraulic motor M can be inserted is formed in the rotating body 31b. A through hole 42h through which the output shaft Ms passes is formed in the left lower motor support member 42. Note that FIG. 8 shows the configuration of the rotating body 31b, but the rotating bodies 32b to 35b also have the same configuration.

[0064] The insertion hole 51 is a hole extending in the direction in which the rotation axis of the rotating body 31b extends. The output shaft Ms passes through the through hole 42h and is attached in a state of being spline-fitted with the insertion hole 51 to be connected to the rotating bodies 31b and 32b. In the rotating body 31b, the insertion hole 51 is formed on the left side wall 22 side. In the rotating bodies 33b and 34b, the insertion hole 51 is formed on the right side wall 22 side. In the rotating bodies 32b and 35b, the insertion hole 51 is formed on both the left side wall 22 side and the right side wall 22 side.

[0065] As shown in FIG. 2, a left lower bearing mechanism 45 (corresponding to the "bearing mechanism" of the present invention) that rotatably supports the rotating bodies 33b and 34b is supported on the left side wall 22.

[0066] As shown in FIG. 4, a right lower bearing mechanism 45 (corresponding to the "bearing mechanism" of the present invention) that rotatably supports the rotating body 31b is supported on the right side wall 22.

[0067] With this configuration, the rotating body 31b is configured to be supported by the left side wall 22 via the left lower motor support member 42 and the hydraulic motor M, and is also configured to be supported by the right side wall 22 via the right lower bearing mechanism 45.

[0068] The rotating bodies 33b and 34b are configured to be supported by the left side wall 22 via the left lower bearing mechanism 45, and are also configured to be supported by the right side wall 22 via the right lower motor support member 42 and the hydraulic motor M.

[0069] The rotating bodies 32b and 35b are configured to be supported by the left and right side walls 22 via the left and right lower motor support members 42 and the hydraulic motor M.

[0070] 〔Support configuration of the rotating body of the rotating body unit located at the conveyance end portion of the conveyance device〕 As shown in FIG. 2, a hydraulic motor M that drives the rotating bodies 36a and 36b provided in the rotating body unit 36 located at the conveyance end portion of the conveyance device 4 is supported on the left side wall 22. The hydraulic motor M is supported on the left side wall 22 via the rear motor support portion 43.

[0071] The rear motor support portion 43 includes a plate-like member 43a (corresponding to the "support member" of the present invention) attached to the left side wall 22, and two rear support mechanisms 43b (corresponding to the "bearing mechanism" of the present invention) that rotatably support the rotating bodies 36a and 36b, respectively.

[0072] As shown in Fig. 6, the plate-like member 43a is provided with two left positioning protrusions 61L1 and 61L2 (corresponding to the "positioning protrusion" of the present invention). On the left side wall 22, left positioning holes 62L1 and 62L2 (corresponding to the "positioning hole" of the present invention) corresponding to the left positioning protrusions 61L1 and 61L2 are formed respectively. The left positioning protrusion 61L1 is configured to be insertable into the left positioning hole 62L1, and the left positioning protrusion 61L2 is configured to be insertable into the left positioning hole 62L2.

[0073] The rear motor support portion 43 is attached to the left side wall 22 in a state where the left positioning protrusion 61L1 provided on the plate-like member 43a is inserted into the left positioning hole 62L1 and the left positioning protrusion 61L2 provided on the plate-like member 43a is inserted into the left positioning hole 62L2.

[0074] Hydraulic motors M for driving the rotating bodies 36a and 36b are respectively supported by the two rear support mechanisms 43b. Although not shown, it is attached in a state of being connected to the rotating bodies 36a and 36b by spline fitting with the output shaft Ms of the hydraulic motor M.

[0075] As shown in Fig. 6, a gear case 54 (corresponding to the "support member" of the present invention) is supported on the right side wall 22. As shown in Fig. 4, the gear case 54 houses a gear 52a connected to the rotating body 36a, a gear 52b connected to the rotating body 36b and meshing with the gear 52a, and a flywheel 53 rotated by the power from the gears 52a and 52b.

[0076] A rear bearing mechanism 55 (corresponding to the "bearing mechanism" of the present invention) for supporting the rotating body 36a is provided inside the gear 52a, and a rear bearing mechanism 55 for supporting the rotating body 36b is provided inside the gear 52b.

[0077] The gear case 54 is provided with two right positioning protrusions 61R1 and 61R2 (corresponding to the "positioning protrusions" of the present invention). On the right side wall 22, right positioning holes 62R1 and 62R2 (corresponding to the "positioning holes" of the present invention) corresponding to the respective right positioning protrusions 61R1 and 61R2 are formed. The right positioning protrusion 61R1 is configured to be insertable into the right positioning hole 62R1, and the right positioning protrusion 61R2 is configured to be insertable into the right positioning hole 62R2.

[0078] The gear case 54 is attached to the right side wall 22 in a state where the right positioning protrusion 61R1 is inserted into the right positioning hole 62R1 and the right positioning protrusion 61R2 is inserted into the right positioning hole 62R2.

[0079] 〔Use of the positioning holes and positioning protrusions during assembly of the conveying device〕 As shown in FIG. 6, the left positioning hole 62L1 formed in the left side wall 22 and the right positioning hole 62R1 formed in the right side wall 22, and the left positioning hole 62L2 formed in the left side wall 22 and the right positioning hole 62R2 formed in the right side wall 22 are provided at the same position facing each other on the left and right side walls 22. In other words, in a state where the conveying device 4 is assembled with the left and right side walls 22 facing each other, the left positioning hole 62L1 and the right positioning hole 62R1 are at positions that coincide in side view, and the left positioning hole 62L2 and the right positioning hole 62R2 are at positions that coincide in side view.

[0080] In the assembly of the conveying device 4, two jigs TL that can be inserted into the left positioning hole 62L1, the right positioning hole 62R1, the left positioning hole 62L2, and the right positioning hole 62R2 are used. In this embodiment, the left positioning hole 62L1, the right positioning hole 62R1, the left positioning hole 62L2, and the right positioning hole 62R2 are formed to have the same size.

[0081] The jig TL is configured to be long. When assembling the conveying device 4, one side and the other side of the first jig TL are inserted into the left positioning hole 62L1 and the right positioning hole 62R1, respectively. Further, one side and the other side of the second jig TL are inserted into the left positioning hole 62L2 and the right positioning hole 62R2, respectively.

[0082] In this state, a plurality of frames 23 are connected by welding or the like across the upper and lower portions of the left and right side walls 22. Thereby, a box-shaped structure is formed by the side walls 22 and the frames 23.

[0083] Thereafter, the conveying device 4 is configured by attaching six sets of rotating body units 31 to 36.

[0084] 〔Configuration of tool insertion holes〕 As shown in FIGS. 2 and 4, a plurality of tool insertion holes 56 into which tools such as a driver can be inserted are formed in the left and right side walls 22.

[0085] In the present embodiment, in the upper rotating bodies 31a to 35a, one tool insertion hole 56 is provided for each rotating body. The tool insertion holes 56 are respectively formed below the axial centers P1, P2, P3, P4, P5 of the swing support members 28 in the left and right side walls 22 and in front of the upper rotating bodies 31a to 35a.

[0086] During maintenance, the hydraulic motor M that drives the rotating bodies 31a to 35a is removed from the upper motor support member 41. Here, the case where the hydraulic motor M that drives the rotating body 31a is removed from the upper motor support member 41 will be described.

[0087] When removing the hydraulic motor M, the output shaft Ms of the hydraulic motor M that supports the rotating body 31a is pulled out from the insertion hole 51 of the rotating body 31a. As a result, as shown by the solid line in FIG. 7, the rotating body 31a tilts downward. As a result, the positions of the insertion hole 51 of the rotating body 31a and the through hole 41h of the upper motor support member 41 are displaced.

[0088] When attaching the hydraulic motor M to the upper motor support member 41, the position of the insertion hole 51 of the rotating body 31a and the through hole 41h of the upper motor support member 41 is adjusted. At this time, the rotating body 31a is moved using the tool DR inserted into the tool insertion hole 56 on the right side wall 22. Here, with the tool DR inserted into the tool insertion hole 56, the swing support member 28 may be fixed in a state of being swung upward, and the rotating body 31a may be moved using another tool inserted from the opening 22a located below the rotating body 31a. As a result, as shown by the two-dot chain line in FIG. 7, the position of the rotating body 31a and the upper motor support member 41 is adjusted. As a result, the position of the insertion hole 51 and the through hole 41h is adjusted. If the central axis of the insertion hole 51 and the central axis of the through hole 41h are aligned by the position adjustment, it becomes possible to easily insert the output shaft Ms through the through hole 41h into the insertion hole 51.

[0089] As shown in FIGS. 2 and 4, in the present embodiment, in the lower rotating bodies 31b to 35b, two tool insertion holes 56 are provided for each rotating body. One of the two tool insertion holes 56 is formed below each of the lower rotating bodies 31b to 35b of the left and right side walls 22, and the other is formed in front of the lower portions of each of the lower rotating bodies 31b to 35b of the left and right side walls 22.

[0090] During maintenance, the hydraulic motor M that drives the rotating bodies 31b to 35b is removed from the lower motor support member 42. Here, the case of removing the hydraulic motor M that drives the rotating body 31b from the lower motor support member 42 will be described.

[0091] When removing the hydraulic motor M, the output shaft Ms of the hydraulic motor M that supports the rotating body 31b is pulled out from the insertion hole 51 of the rotating body 31b. As a result, the rotating body 31b tilts downward. As a result, the positions of the insertion hole 51 of the rotating body 31b and the through hole 42h of the lower motor support member 42 are displaced.

[0092] As shown in FIG. 8, when attaching the hydraulic motor M to the lower motor support member 42, the position of the insertion hole 51 of the rotating body 31b and the through hole 42h of the lower motor support member 42 is adjusted. At this time, the rotating body 31b is moved using the tool DR inserted into the tool insertion hole 56 of the left side wall 22. Thereby, the position of the rotating body 31b and the lower motor support member 42 is adjusted. As a result, the position of the insertion hole 51 and the through hole 42h is adjusted. If the central axis of the insertion hole 51 and the central axis of the through hole 42h are aligned by the position adjustment, it becomes possible to easily insert the output shaft Ms into the insertion hole 51 through the through hole 42h.

[0093] 〔Alternative Embodiment〕 Hereinafter, an alternative embodiment in which changes are made to the above embodiment will be exemplified.

[0094] (1) In the above embodiment, the upper rotating body 36a and the lower rotating body 36b have been described by taking as an example the configuration of a so-called chopper for cutting crops. However, the present invention is not limited to the above embodiment. For example, the upper rotating body 36a and the lower rotating body 36b may have a plurality of scraping members 26 radially connected to the outer peripheral portion of the cylindrical main body portion 25, similar to the upper rotating bodies 31a to 35a and the rotating bodies 31b to 35b.

[0095] (2) In the above embodiment, the configuration in which the gear case 54 is provided on the right side wall 22 has been described by taking as an example. However, the present invention is not limited to the above embodiment. For example, the gear case 54 may not be provided, and a support member similar to that on the left side may be provided on the right side wall 22. Further, the configuration may be such that the flywheel 53 is not provided in the gear case 54.

[0096] (3) In the above-described embodiment, a configuration in which each of the upper rotators 31a to 36a and the lower rotators 31b to 36b is provided with a hydraulic motor M as a drive source has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, a configuration in which an electric motor is provided instead of the hydraulic motor M may be used. Further, a chain for transmitting a driving force to the upper rotators 31a to 36a and the lower rotators 31b to 36b may be provided, and a configuration in which the power of the hydraulic motor M is transmitted to the upper rotators 31a to 36a and the lower rotators 31b to 36b via the chain may be used.

[0097] (4) In the above-described embodiment, a configuration in which a plurality of positioning protrusions are provided on the plate-like member 43a and the gear case 54 has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, a configuration in which one positioning protrusion is provided on each of the plate-like member 43a and the gear case 54 may be used.

[0098] (5) In the above-described embodiment, a configuration in which the position adjustment between the insertion hole 51 and the through holes (41h, 42h) can be performed by moving the rotators 31a to 35a or the rotators 31b to 35b using the tool DR inserted into the tool insertion hole 56 has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the position adjustment between the insertion hole 51 and the through holes (41h, 42h) may be configured to be possible by moving the upper motor support member 41 or the lower motor support member 42 using the tool DR inserted into the tool insertion hole 56.

[0099] (6) In the above-described embodiment, a configuration in which the insertion hole 51 is spline-fitted to the output shaft Ms has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the output shaft Ms may be fixed with a sealing material or the like that can be held in a state of being inserted into the insertion hole 51.

[0100] (7) In the above-described embodiment, the configuration in which the upper rotators 31a to 35a are supported so as to be swingable up and down has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the upper rotators 31a to 35a may be supported in a state where they cannot swing, similar to the lower rotators 31b to 35b.

[0101] (8) In the above-described embodiment, the configuration in which one tool insertion hole 56 is provided for each of the upper rotators 31a to 35a has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, two or more tool insertion holes 56 may be provided for each of the upper rotators 31a to 35a.

[0102] (9) In the above-described embodiment, the configuration in which two tool insertion holes 56 are provided for each of the lower rotators 31b to 35b has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, one tool insertion hole 56 may be provided for each of the lower rotators 31b to 35b, or three or more tool insertion holes 56 may be provided.

[0103] (10) In the above-described embodiment, the configuration in which the left positioning holes 62L1, the right positioning holes 62R1, the left positioning holes 62L2, and the right positioning holes 62R2 are provided as positioning holes has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, only the left positioning holes 62L1 and the right positioning holes 62R1, or only the left positioning holes 62L2 and the right positioning holes 62R2 may be provided as positioning holes.

[0104] (11) In the above-described embodiment, the configuration in which the left positioning holes 62L1, the right positioning holes 62R1, the left positioning holes 62L2, and the right positioning holes 62R2 are formed to have the same size has been described as an example. However, the present invention is not limited to the above-described embodiment, and they may be formed to have different sizes.

[0105] Furthermore, the configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction. In addition, the embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be appropriately modified within the scope not departing from the object of the present invention.

Industrial Applicability

[0106] The present invention can be used in a sugarcane harvester equipped with a conveying device that conveys crops cut from a field toward the rear of the machine body.

Explanation of Signs

[0107] 4: Conveying device 22: Side wall 31a, 32a, 33a, 34a, 35a: Rotating body (upper rotating body) 31b, 32b, 33b, 34b, 35b: Rotating body (lower rotating body) 36a, 36b: Rotating body (chopper) 41: Upper motor support member (support member) 41h: Through hole 42: Lower motor support member (support member) 42h: Through hole 43a: Plate-like member (support member) 43b: Rear support mechanism (bearing mechanism) 44: Upper bearing mechanism (bearing mechanism) 45: Lower bearing mechanism (bearing mechanism) 51: Insertion hole 52a, 52b: Gear 53: Flywheel 54: Gear case (support member) 55: Rear bearing mechanism (bearing mechanism) 56: Tool insertion hole 61L1: Left positioning protrusion (positioning protrusion) 61L2: Left positioning protrusion (positioning protrusion) 61R1: Right positioning protrusion (positioning protrusion) 61R2: Right positioning protrusion (positioning protrusion) 62L1: Left positioning hole (positioning hole) 62L2: Left positioning hole (positioning hole) 62R1: Right positioning hole (positioning hole) 62R2: Right positioning hole (positioning hole) M: Hydraulic motor (motor) Ms: Output shaft

Claims

1. A conveying device for conveying crops cut from a field toward the rear of the machine body is provided, The conveying device is left and right side walls, a rotating body rotatable around an axis along the left-right direction, a bearing mechanism that rotatably supports the rotating body, and a support member that supports the bearing mechanism, A positioning hole is provided in the side wall, The support member is provided with a positioning projection that can be inserted into the positioning hole, A sugarcane harvester in which the support member is attached to the side wall with the positioning projection inserted into the positioning hole.

2. The sugarcane harvester according to claim 1, wherein the rotating body is a chopper for cutting crops.

3. The sugarcane harvester according to claim 1, wherein the support member is a gear case for housing a plurality of gears.

4. The sugarcane harvester according to claim 3, wherein a flywheel is housed in the gear case.

5. The sugarcane harvester according to claim 1, wherein a motor, which is a drive source of the rotating body, is supported by the support member.

6. The sugarcane harvester according to claim 1, wherein a plurality of the positioning projections are provided on the support member, and a plurality of the positioning holes corresponding to the positioning projections are provided on the side wall.

7. The sugarcane harvester according to claim 1, wherein the positioning holes are provided at the same position facing each other on the left and right side walls.

8. A conveying device for conveying crops cut from a field toward the rear of the machine body is provided, The conveying device is left and right side walls, a rotating body rotatable around an axis along the left-right direction, a motor attached in a state of being connected to the rotating body, and a support member that supports the motor, A tool insertion hole into which a tool can be inserted is provided in the side wall, A sugarcane harvester is configured such that the position of the rotating body and the support member can be adjusted by moving the rotating body or the support member using a tool inserted into the tool insertion hole.

9. An insertion hole into which the output shaft of the motor can be inserted is provided in the rotating body, A through hole through which the output shaft passes is provided in the support member, The sugarcane harvester according to claim 8, wherein the positions of the insertion hole and the through hole can be adjusted by moving the rotating body or the support member using a tool inserted into the tool insertion hole.

10. The sugarcane harvester according to claim 9, wherein the insertion hole is spline-fitted with the output shaft.

11. The rotating body has an upper rotating body and a lower rotating body disposed below the upper rotating body, and is configured to convey the crop while sandwiching it between the upper rotating body and the lower rotating body. The sugarcane harvester according to claim 8, wherein the support member that supports the motor connected to the upper rotating body is swingably supported by the side wall.

12. The sugarcane harvester according to claim 8, wherein a plurality of the tool insertion holes are provided for one of the rotating bodies.

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