Sugar cane harvester

Abstract

The present invention is provided with a conveyance device that conveys crops reaped from a field toward the rear of a machine body. The conveyance device has left and right lateral walls 22, a rotating body capable of rotating about a shaft center extending in the left-right direction, a bearing mechanism 43b that rotatably supports the rotating body, and a support member 43a that supports the bearing mechanism 43b. The lateral walls 22 are provided with positioning holes (62L1, 62L2, 62R1, 62R2). The support member 43a is provided with positioning protrusions (61L, 61L, 61R1, 61R2) that can be inserted into the positioning holes (62L1, 62L2, 62R1, 62R2). The support member 43a is attached to the lateral walls 22 in a state where the positioning protrusions (61L1, 61L2, 61R1, 61R2) are inserted in the positioning holes (62L1, 62L2, 62R1, 62R2).

Description

sugarcane harvester

[0001] The present invention relates to a sugarcane harvester equipped with a transport device that transports crops harvested from a field toward the rear of the machine body.

[0002] 2. Description of the Related Art Conventional sugarcane harvesters include those that are equipped with a transport device that transports crops harvested from a field toward the rear of the machine body, as described in Patent Document 1, for example.

[0003] Japanese Patent Application Publication No. 2022-101171

[0004] In such a sugarcane harvester, the conveying device is provided with upper and lower rotating bodies that can rotate around an axis that runs in the left-right direction, and the rotating bodies are arranged at intervals along the direction in which the crop is conveyed.

[0005] In addition, some transport devices for sugarcane harvesters are provided with a motor for driving each rotor, and the motor is attached to the rotor with its output shaft inserted in the direction of the rotor's rotation shaft through a hole formed in the side wall of the transport device.

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

[0007] In such a conveying device, if the support members are not attached to the side walls in the correct positions during manufacturing, problems may occur, such as the rotor not rotating properly. Attaching the support members to the side walls in the correct positions requires measurements, etc., which increases the number of steps and work time, and there is room for improvement.

[0008] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a means for facilitating the assembly of a transport device for transporting crops harvested from a field toward the rear of the machine body in a sugarcane harvester.

[0009] The sugarcane harvester of the present invention is equipped with a transport device that transports crops harvested from a field toward the rear of the machine body, and the transport device has left and right side walls, a rotating body that can rotate 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, and the side walls are provided with positioning holes, and the support members are provided with positioning protrusions that can be inserted into the positioning holes, and the support members are attached to the side walls with the positioning protrusions inserted into the positioning holes.

[0010] According to this invention, when the support member that supports the rotor via the bearing mechanism is attached to the side wall, the support member can be attached to the side wall in an accurate position simply by inserting the positioning protrusions on the support member into the positioning holes on the side wall. As a result, the support member can be easily attached to the accurate position, which makes it easier to assemble the conveying device.

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

[0012] Generally, choppers are equipped with blades for cutting crops. For example, when the blades become worn, the support member and the rotor may need to be removed frequently to replace the blades. Even in such cases, the above-described configuration makes it possible to easily attach the support member that supports the chopper to an accurate position on 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 a rotating body. A gear case housing such gears needs to be attached to a precise position on the side wall. With the above-described configuration, it is possible to easily attach a gear case that supports a rotating body and houses multiple gears to a precise position on 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 in which such a flywheel is housed is also heavy. With the above-described configuration, even a heavy gear case can be easily attached to the side wall at an accurate position.

[0017] In the present invention, it is preferable that a motor serving as a drive source for the rotating body is supported on the support member.

[0018] Generally, motors are heavy, and the support member on which such motors are supported is also heavy. With the above-described configuration, even a heavy support member can be easily attached to the side wall in an accurate position.

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

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

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

[0022] According to this configuration, the left and right side walls can be accurately positioned relative to each other by using a jig or the like that is inserted into the left and right side walls. In this state, by welding a frame or the like that is provided across the left and right side walls, it is possible to manufacture a conveying device that is configured so that the left and right side walls are accurately positioned.

[0023] The sugarcane harvester of the present invention is equipped with a transport device that transports crops harvested from a field toward the rear of the machine body, and the transport device has left and right side walls, a rotating body that can rotate around an axis along the left-right direction, a motor that is attached and connected to the rotating body, and a support member that supports the motor, and the side walls are provided with a tool insertion hole into which a tool can be inserted, and 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.

[0024] According to this invention, it is possible to easily adjust the positions of the rotor and the support member by simply moving the rotor and the support member with a tool inserted into the tool insertion hole. For example, when a motor that has been removed for maintenance or the like is reconnected to the rotor, it may be necessary to adjust the positions of the rotor and the support member. Even in such cases, it is possible to easily adjust the positions.

[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, and the support member is provided with a through hole through which the output shaft passes, and that 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 have a configuration in which the motor and the rotating body are connected by inserting the output shaft of the motor into the insertion hole of the rotating body through the through hole of the support member. In such conveying devices, when the motor is removed for maintenance or the like and then reconnected to the rotating body, it is necessary to adjust the position of the insertion hole and the through hole. With the above-mentioned configuration, it is possible to easily adjust the position of the insertion hole and the through hole, which makes it easier to assemble the conveying device.

[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 position of the rotor and the support member when reconnecting the motor to the rotor after it has been removed for maintenance, etc. With the above-described configuration, it is possible to easily adjust the position even in such cases.

[0029] In the present invention, the rotating body has an upper rotating body and a lower rotating body arranged below the upper rotating body, and is configured to transport crops while sandwiching them between the upper rotating body and the lower rotating body, and it is preferable that the support member supporting the motor connected to the upper rotating body is supported on the side wall so as to be swingable.

[0030] According to this configuration, even in a conveyance device that includes an upper rotating body and a lower rotating body and that includes multiple rotating bodies, it is possible to easily perform 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 into which the tool is to be inserted can be selected depending on the direction in which the rotating body is moved, making it possible to more suitably adjust the position.

[0033] FIG. 1 is a side view of a sugarcane harvester. FIG. 2 is a side view seen from the left side showing the configuration of a conveying device. FIG. 3 is a side view seen from the left side showing the configuration of a rotating body of the conveying device. FIG. 4 is a side view seen from the right side showing the configuration of the conveying device. FIG. 5 is a diagram showing a support structure for a rotating body of a rotating body unit located at the conveying end of the conveying device. FIG. 6 is a diagram showing the configuration when a jig is inserted into the side wall of the conveying device. FIG. 7 is a diagram showing the configuration of the upper rotating body and a method of position adjustment using a tool insertion hole. FIG. 8 is a diagram showing the configuration of the upper rotating body and a method of position adjustment using a tool insertion hole.

[0034] An embodiment of 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 drawings will be referred to as "front," the direction of arrow B as "rear," the direction of arrow L as "left," and the direction of arrow R as "right." Furthermore, the direction of arrow U in the drawings will be referred to as "up," and the direction of arrow D as "down."

[0035] [Overall Configuration of Sugarcane Harvesting Machine] As shown in FIG. 1, the body of the sugarcane harvesting machine as a whole is supported by left and right front wheels 1 which are running devices and left and right rear wheels 2 which are also running devices.

[0036] The machine body is provided with a reaping section 3, a conveying device 4 arranged in a rear-up tilted position, a separation device 5 which is a post-processing device connected to the rear of the conveying device 4, a conveyor 6 which is a post-processing device extending upward in a tilted position from a location below the separation device 5, a driving section 7 arranged above the reaping section 3, and an engine 8.

[0037] With the above configuration, as the machine moves forward, the cutting blade 11 of the cutting unit 3 cuts the base of the crops in the field to cut the crops, and the crops cut by the cutting blade 11 are transported upward and to the rear of the machine by the transport device 4.

[0038] When the crop reaches the end of the conveying device 4, it is chopped at the end and fed to the separating device 5. The chopped crop passes downward inside the separating device 5 and falls to the front of the conveyor 6. Inside the separating device 5, sorting air is fed to the crop, blowing away debris, which is then separated and discharged.

[0039] The crops that fall to the front of the conveyor 6 are transported upward and rearward by the conveyor 6, and are then discharged from the discharge section at the top of the rear of the conveyor 6 onto the loading platform of an accompanying transport vehicle such as a truck (not shown) for collection.

[0040] [Configuration of the Conveying Device] The conveying device 4 is shown in Figures 2 to 4. Figure 2 is a side view of the conveying device 4 seen from the left side, showing the left side wall 22. Figure 3 is a side view of the conveying device 4 seen from the left side, similar to Figure 2, but with the left side wall 22 omitted and showing the right side wall 22. Figure 4 is a side view of the conveying device 4 seen from the right side, showing the right side wall 22.

[0041] As shown in Figures 2 to 4, the conveying device 4 has left and right side walls 22, and a plurality of frames 23 are connected across the upper and lower parts of the left and right side walls 22, so that the side walls 22 and the frames 23 form a box-shaped structure.

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

[0043] Each of the rotor units 31 to 36 has an upper rotor 31 a, 32 a, 33 a, 34 a, 35 a, 36 a (each corresponding to an "upper rotor" in the present invention) that can rotate about an axis along the left-right direction, and a lower rotor 31 b, 32 b, 33 b, 34 b, 35 b, 36 b (each corresponding to a "lower rotor" in the present invention) that can also rotate about an axis along the left-right direction. The rotor units 31 to 36 are arranged at intervals along the direction in which the crops are transported.

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

[0045] 7, the rotor 31a includes a cylindrical main body 25 and a plurality of sweeping members 26. The sweeping members 26 are plate-like members with uneven edges, and are radially connected to the outer periphery of the cylindrical main body 25. Although not shown, the rotors 32a to 35a and the lower rotors 32b to 35b also have the same configuration as the rotor 31a.

[0046] As shown in Figure 8, the rotor 31b, which is located furthest forward among the lower rotors 31b to 35b, has a scraping member 26F radially connected to the main body 25, the scraping member 26F having a shape such that the width of the left and right end portions is narrower than the width of the left and right central portion.

[0047] In the rotor unit 36 ​​located at the end of the conveying section of the conveying device 4, an upper rotor 36a and a lower rotor 36b have a plurality of horizontally elongated chopping blades 27 radially connected to the outer periphery of the cylindrical main body 25. The rotors 36a and 36b of the rotor unit 36 ​​are so-called choppers that cut the crops.

[0048] With the above configuration, when the base of a crop harvested by the harvesting unit 3 is supplied to the transport device 4, the base of the crop is pulled in between the upper rotor 31a and the lower rotor 31b. The crop is transported while being sandwiched between the upper rotors 31a to 35a and the lower rotors 31b to 35b, with the base of the crop leading the top of the crop.

[0049] When the crop reaches the end of the conveying device 4, it is clamped between the upper rotor 36a and the lower rotor 36b, shredded by the shredding blade 27, and supplied to the top of the separating device 5.

[0050] [Support structure of upper rotating body of rotating body unit in conveying device] As shown in Figures 2 to 4, a swing support member 28 is provided for the rotating body units 31 to 35 to support the upper rotating bodies 31a to 35a so that they can swing up and down.

[0051] In the transport device 4, a swing support member 28 is supported by the left and right side walls 22 so as to be swingable up and down about axes P1, P2, P3, P4, and P5 extending in 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) that rotatably supports the rotating bodies 31 a, 33 a, and 35 a 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 that rotatably supports the rotating bodies 32a and 34a is supported by the right swing support member 28.

[0054] As shown in Figure 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 the hydraulic motor M that drives the rotating bodies 32a, 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 the hydraulic motor M that drives the rotating bodies 31a, 33a, and 35a is supported by the right swing support member 28.

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

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

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

[0059] In addition, the rotating bodies 32a, 34a are supported on the left side wall 22 via the left oscillating support member 28, the left upper motor support member 41, and the hydraulic motor M, and are supported on the left side wall 22 via the right upper bearing mechanism 44 and the right oscillating support member 28.

[0060] 2 to 4, an opening 22a having an arc shape in a side view is formed in the side wall 22. 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 of the rotating body unit in the conveying device] As shown in Figure 2, a lower motor support member 42 (corresponding to the "support member" of the present invention) that supports the hydraulic motor M that drives 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 the hydraulic motor M that drives the rotating bodies 32b, 33b, 34b, and 35b is supported on the right side wall 22.

[0063] As shown in Figure 8, the rotor 31b is formed with an insertion hole 51 into which the output shaft Ms of the hydraulic motor M can be inserted. The left lower motor support member 42 is formed with a through hole 42h through which the output shaft Ms passes. Note that although Figure 8 shows the configuration of the rotor 31b, the rotors 32b to 35b also have a similar configuration.

[0064] The insertion hole 51 is a hole that extends in the direction of the rotation axis of the rotor 31b. The output shaft Ms passes through the through hole 42h and is spline-fitted into the insertion hole 51, thereby being attached in a connected state to the rotors 31b and 32b. In the rotor 31b, the insertion hole 51 is formed on the left side wall 22 side. In the rotors 33b and 34b, the insertion hole 51 is formed on the right side wall 22 side. In the rotors 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 supported on the left side wall 22 via the left lower motor support member 42 and the hydraulic motor M, and is supported on the right side wall 22 via the right lower bearing mechanism 45.

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

[0069] The rotating bodies 32b, 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] 2, a hydraulic motor M that drives the rotors 36a, 36b provided in a rotor unit 36 ​​located at the transfer terminal end of the transfer device 4 is supported on the left side wall 22. The hydraulic motor M is supported on the left side wall 22 via a rear motor support portion 43.

[0071] The rear motor support portion 43 has a plate-shaped 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 mechanisms" of the present invention) that rotatably support the rotating bodies 36a and 36b, respectively.

[0072] As shown in Figure 6, the plate-like member 43a is provided with two left positioning protrusions 61L1 and 61L2 (corresponding to "positioning protrusions" in this invention). The left side wall 22 is formed with left positioning holes 62L1 and 62L2 (corresponding to "positioning holes" in this invention) corresponding to the left positioning protrusions 61L1 and 61L2, 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 with the left side positioning protrusion 61L1 provided on the plate-shaped member 43a inserted into the left side positioning hole 62L1, and the left side positioning protrusion 61L2 provided on the plate-shaped member 43a inserted into the left side positioning hole 62L2.

[0074] The two rear support mechanisms 43b support hydraulic motors M that drive the rotors 36a, 36b, respectively. Although not shown, the hydraulic motors M are attached in a state where they are connected to the rotors 36a, 36b by spline-fitting with the output shafts Ms of the hydraulic motors 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 that rotates by the power from the gears 52a and 52b.

[0076] A rear bearing mechanism 55 (corresponding to the "bearing mechanism" of the present invention) that supports the rotating body 36a is provided inside the gear 52a, and a rear bearing mechanism 55 that supports 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 "positioning protrusions" in the present invention). Right side wall 22 is formed with right positioning holes 62R1 and 62R2 (corresponding to "positioning holes" in the present invention) corresponding to the right positioning protrusions 61R1 and 61R2, respectively. 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 with the right positioning protrusion 61R1 inserted into the right positioning hole 62R1 and the right positioning protrusion 61R2 inserted into the right positioning hole 62R2.

[0079] 6, the left side positioning hole 62L1 formed in the left side wall 22 and the right side positioning hole 62R1 formed in the right side wall 22, and the left side positioning hole 62L2 formed in the left side wall 22 and the right side positioning hole 62R2 formed in the right side wall 22 are provided at the same positions facing each other on the left and right side walls 22. In other words, when the conveyance device 4 is assembled with the left and right side walls 22 facing each other, the left side positioning hole 62L1 and the right side positioning hole 62R1 are aligned in a side view, and the left side positioning hole 62L2 and the right side positioning hole 62R2 are aligned in a side view.

[0080] 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 assembling the conveying device 4. 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 be 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. Furthermore, 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.

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

[0083] Thereafter, the six sets of rotating body units 31 to 36 are attached to form the transport device 4.

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

[0085] In this embodiment, each of the upper rotors 31 a to 35 a is provided with one tool insertion hole 56. The tool insertion holes 56 are formed below the axes P1, P2, P3, P4, and P5 of the swing support members 28 in the left and right side walls 22 and in front of the upper rotors 31 a to 35 a.

[0086] During maintenance, the hydraulic motors M that drive the rotating bodies 31a to 35a are removed from the upper motor support member 41. Here, a 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 the hydraulic motor M is removed, the output shaft Ms of the hydraulic motor M, which supports the rotating body 31a, is pulled out of the insertion hole 51 of the rotating body 31a. As a result, the rotating body 31a tilts downward as shown by the solid line in Figure 7. As a result, the insertion hole 51 of the rotating body 31a and the through hole 41h of the upper motor support member 41 become misaligned.

[0088] When attaching the hydraulic motor M to the upper motor support member 41, 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 adjusted. At this time, the rotating body 31a is moved using a tool DR inserted into the tool insertion hole 56 of the right side wall 22. Alternatively, the swing support member 28 may be swung upward and fixed using the tool DR inserted into the tool insertion hole 56, and the rotating body 31a may be moved using another tool inserted through the opening 22a located below the rotating body 31a. This results in the positional adjustment between the rotating body 31a and the upper motor support member 41, as indicated by the two-dot chain line in FIG. 7 . As a result, the positions of the insertion hole 51 and the through hole 41h are adjusted. Once the central axes of the insertion hole 51 and the through hole 41h are aligned by this positional adjustment, the output shaft Ms can be easily inserted into the insertion hole 51 by passing through the through hole 41h.

[0089] 2 and 4, in this embodiment, each of the lower rotating bodies 31b to 35b is provided with two tool insertion holes 56. One of the two tool insertion holes 56 is formed below the lower rotating body 31b to 35b of the left and right side walls 22, and the other is formed in the front of the lower portion of the lower rotating body 31b to 35b of the left and right side walls 22.

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

[0091] When the hydraulic motor M is removed, the output shaft Ms of the hydraulic motor M, which supports the rotating body 31b, is pulled out of the insertion hole 51 of the rotating body 31b. As a result, the rotating body 31b tilts downward. As a result, the insertion hole 51 of the rotating body 31b and the through hole 42h of the lower motor support member 42 become misaligned.

[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 a tool DR inserted into the tool insertion hole 56 of the left side wall 22. This adjusts the position of the rotating body 31b and the lower motor support member 42. As a result, the position of the insertion hole 51 and the through hole 42h is adjusted. If the central axes of the insertion hole 51 and the through hole 42h are aligned by this position adjustment, the output shaft Ms can be easily inserted into the insertion hole 51 by passing through the through hole 42h.

[0093] Other Embodiments Hereinafter, other embodiments in which the above-described embodiment is modified will be described.

[0094] (1) In the above embodiment, the upper rotor 36a and the lower rotor 36b are configured as so-called choppers that cut crops, but the present invention is not limited to the above embodiment. For example, the upper rotor 36a and the lower rotor 36b may have a plurality of scraping members 26 radially connected to the outer periphery of the cylindrical main body 25, similar to the upper rotors 31a to 35a and the rotors 31b to 35b.

[0095] (2) In the above embodiment, the gear case 54 is provided on the right side wall 22. 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. Furthermore, the gear case 54 may not include the flywheel 53.

[0096] (3) In the above embodiment, a configuration in which the upper rotating bodies 31a to 36a and the lower rotating bodies 31b to 36b are each provided with a hydraulic motor M as a drive source has been described as an example, but the present invention is not limited to the above embodiment. For example, a configuration in which an electric motor is provided instead of the hydraulic motor M may be adopted. Also, a configuration in which a chain is provided to transmit drive force to the upper rotating bodies 31a to 36a and the lower rotating bodies 31b to 36b, and the power of the hydraulic motor M is transmitted to the upper rotating bodies 31a to 36a and the lower rotating bodies 31b to 36b via the chain may be adopted.

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

[0098] (5) In the above embodiment, the position of the insertion hole 51 and the passage hole (41h, 42h) can be adjusted by moving the rotors 31a to 35a or the rotors 31b to 35b using the tool DR inserted into the tool insertion hole 56. However, the present invention is not limited to the above embodiment. For example, the position of the insertion hole 51 and the passage hole (41h, 42h) can be adjusted 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 embodiment, the insertion hole 51 is described as being spline-fitted with the output shaft Ms, but the present invention is not limited to the above embodiment. For example, the output shaft Ms may be fixed in place by a seal or the like that can hold the output shaft Ms inserted into the insertion hole 51.

[0100] (7) In the above embodiment, the upper rotors 31 a to 35 a are supported so as to be able to swing up and down, but the present invention is not limited to the above embodiment. For example, the upper rotors 31 a to 35 a may be supported so as not to be able to swing, similar to the lower rotors 31 b to 35 b.

[0101] (8) In the above embodiment, one tool insertion hole 56 is provided for each of the upper rotating bodies 31 a to 35 a. However, the present invention is not limited to the above embodiment. For example, two or more tool insertion holes 56 may be provided for each of the upper rotating bodies 31 a to 35 a.

[0102] (9) In the above embodiment, two tool insertion holes 56 are provided for each of the lower rotors 31b to 35b, but the present invention is not limited to the above embodiment. For example, one tool insertion hole 56 may be provided for each of the lower rotors 31b to 35b, or three or more tool insertion holes 56 may be provided for each of the lower rotors 31b to 35b.

[0103] (10) In the above embodiment, the left positioning hole 62L1, the right positioning hole 62R1, the left positioning hole 62L2, and the right positioning hole 62R2 are provided as positioning holes. However, the present invention is not limited to the above embodiment. For example, the positioning holes may be provided only with the left positioning hole 62L1 and the right positioning hole 62R1, or only with the left positioning hole 62L2 and the right positioning hole 62R2.

[0104] (11) In the above embodiment, the left positioning hole 62L1, the right positioning hole 62R1, the left positioning hole 62L2, and the right positioning hole 62R2 are described as being the same size, but the present invention is not limited to the above embodiment, and they may each be formed to different sizes.

[0105] 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, unless a contradiction occurs. Furthermore, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these, and can be modified as appropriate within the scope of the purpose of the present invention.

[0106] INDUSTRIAL APPLICABILITY The present invention can be used in a sugarcane harvester equipped with a transport device that transports crops harvested from a field toward the rear of the machine body.

[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: Passing hole 42: Lower motor support member (support member) 42h: Passing hole 43a: Plate-shaped 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 side positioning protrusion (positioning protrusion) 61L2: Left side positioning protrusion (positioning protrusion) 61R1: Right side positioning protrusion (positioning protrusion) 61R2: Right side positioning protrusion (positioning protrusion) 62L1: Left side positioning hole (positioning hole) 62L2: Left side positioning hole (positioning hole) 62R1: Right side positioning hole (positioning hole) 62R2: Right side positioning hole (positioning hole) M: Hydraulic motor (motor) Ms: Output shaft

Claims

1. A sugarcane harvester is provided with a conveying device for conveying the crops cut from the 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 for rotatably supporting the rotating body, and a support member for supporting the bearing mechanism. A positioning hole is provided in the side wall, and a positioning protrusion insertable into the positioning hole is provided on the support member. The support member is attached to the side wall with the positioning protrusion 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 or 2, 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 any one of claims 1 to 4, wherein a motor, which is a driving source of the rotating body, is supported by the support member.

6. The sugarcane harvester according to any one of claims 1 to 5, wherein 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 in the side wall.

7. The sugarcane harvester according to any one of claims 1 to 6, wherein the positioning holes are provided at the same position facing each other in the left and right side walls.

8. A sugarcane harvester is provided with a conveying device for conveying the crops cut from the 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 motor attached in a state of being connected to the rotating body, and a support member for supporting the motor. A tool insertion hole into which a tool can be inserted is provided in the side wall. The position adjustment between the rotating body and the support member can be achieved by moving the rotating body or the support member using the tool inserted into the tool insertion hole.

9. 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. The sugarcane harvester according to claim 8.

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

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 support member that supports the motor connected to the upper rotating body is swingably supported by the side wall. The sugarcane harvester according to any one of claims 8 to 10.

12. A plurality of the tool insertion holes are provided for one of the rotating bodies. The sugarcane harvester according to any one of claims 8 to 11.

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