Sugar cane harvester

Abstract

To provide a sugar cane harvester so structured that the bottom part of a second transport device are easy to exchange.SOLUTION: A sugar cone harvester includes a reaping part, a first transport device and a sorting device. A retention part capable of catching and retaining crops falling from the sorting device, and a second transport device that transports the crops in the retention part in an upward inclined direction and discharges them from a terminal part are provided. The second transport device comprises: lateral parts on one side and the other side arranged oppositely to each other at an interval; bottom parts 49, 50, 56 arranged across lower parts of the lateral parts on one side and the other side; and a transport body driven to move toward the terminal part of the second transport device along the lateral parts at a position above upper parts of the bottom parts 49, 50, 56 in order to transport the crops. The bottom parts 49, 50, 56 are divided into a plurality of parts in a crosswise direction across the lateral parts on one side and the other side.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to an arrangement for transporting crop to a transport vehicle in a sugarcane harvester. [Background technology]

[0002] As disclosed in Patent Document 1, there is a sugarcane harvester that is provided with a reaping unit, a first conveying device, a sorting device, a storage unit, and a second conveying device. In Patent Document 1, crops in a field are harvested by a harvesting unit, and the harvested crops are transported diagonally upward and backward by a first transport device. The crops are supplied from the terminal end of the first transport device to a sorting device, where impurities are separated, and the crops fall from the sorting device to a storage unit and the starting end of a second transport device. The dropped crops are transported diagonally upward by a second transport device, and from the terminal end of the second transport device, they are supplied to the loading platform of a transport vehicle such as a truck that accompanies the sugarcane harvester. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-101182 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the second conveying device has one and the other side portions, a bottom portion, and a conveying body, and the conveying body is driven to move along the bottom portion toward the terminal end of the second conveying device, causing the crops to rub against the bottom portion while being conveyed. As a result, the bottom portion of the second conveying device is prone to wear, and the bottom portion of the second conveying device needs to be replaced from time to time.

[0005] In the second conveying device, which is provided with one and other side portions, a bottom portion, and a conveying body, the worker holds the bottom portion and lifts it upward between the one and other side portions to remove it, and holds the bottom portion and passes it downward between the one and other side portions from above to attach it. In this case, if the bottom is a single piece that spans one and the other side portions, when the bottom is removed (attached) by passing between the one and the other side portions, the edge of the bottom is expected to rub against the side portions, making it difficult to remove and attach the bottom.

[0006] The present invention aims to configure a sugarcane harvester such that the bottom of the second conveying device can be easily replaced. [Means for solving the problem]

[0007] The sugarcane harvester of the present invention includes a reaping unit that reaps crops in a field, a first conveying device that conveys the crops reaped by the reaping unit diagonally upward and backward, a sorting device that is provided at the end of the first conveying device and that separates and discharges impurities from the crops that drop from the end of the first conveying device using sorting wind, a storage unit that is provided below the sorting device and is capable of receiving and storing the crops that drop from the sorting device, and a storage unit that extends diagonally upward from the storage unit and is configured to store the crops. The second conveying device is provided with a second conveying device that conveys the crops diagonally upward and discharges them from the terminal end, and the second conveying device has one and other side portions arranged facing each other at a predetermined distance, a bottom portion arranged across the lower part of one and other side portions, and a conveying body that is driven to move above the bottom along the side portions toward the terminal end of the second conveying device to convey the crops, and the bottom portion is divided into multiple parts in the width direction across the one and other side portions.

[0008] According to the present invention, in the second conveying device, the bottom is divided into multiple parts in the width direction spanning one and the other horizontal portions, and the width of one bottom part is smaller than the width spanning one and the other horizontal portions. The worker can move the bottom part slightly away from the side parts by holding the bottom part and moving it slightly towards the center position between one and the other side parts, so that when the worker then lifts the bottom part up to remove it, the bottom part is less likely to rub against the side parts.

[0009] The worker holds the bottom and moves the center part slightly away from the side parts downward to prevent the bottom from rubbing against the side parts. After this, the worker moves the bottom part laterally toward one or the other side part to attach it.

[0010] This reduces the chance of the bottom rubbing against the side when the bottom is removed (attached), making it easier to remove and attach the bottom, and improving the workability of replacing the bottom of the second conveying device.

[0011] In the present invention, it is preferable that a support portion is provided for supporting the bottom portion from below.

[0012] According to the present invention, removal of the bottom is achieved by lifting the bottom from the support, and installation of the bottom is achieved by placing the bottom on the support. This is advantageous in terms of improving the workability of replacing the bottom of the second transport device.

[0013] According to the present invention, the bottom is supported from below by the support, and the support is not located above the bottom. This allows the crops to be transported smoothly when they are rubbed against the bottom of the transport body while being transported.

[0014] In the present invention, it is preferable that the support portions are provided along the direction of movement of the transport body so as to be along both ends of the adjacent bottom portions and support both ends of the bottom portions.

[0015] According to the present invention, both ends of adjacent bottom parts are supported by the support parts over a long range along the longitudinal direction of the bottom parts, so that the adjacent bottom parts are stably supported.

[0016] In the present invention, it is preferable that the support portion is provided along a direction perpendicular to the direction of movement of the transport body and is provided with a fixing portion that fixes the bottom portion placed on the support portion to the support portion.

[0017] According to the present invention, the bottom is divided into multiple parts in the width direction across one and the other horizontal portions, while the support parts are arranged along a direction (width direction) perpendicular to the movement direction of the conveying body, making it easier to provide fixing parts for fixing the bottom to the support parts.

[0018] In the present invention, it is preferable that the fixing part has a stud bolt attached to the underside of the bottom part and protruding downward, an opening formed in the support part and into which the stud bolt is inserted, and a nut attached to and tightened on the stud bolt.

[0019] According to the present invention, the nuts are removed from the stud bolts of the bottom part, and the bottom part is then easily lifted and removed from the support. The bottom is easily attached to the support by inserting the stud bolts in the bottom into the openings in the support, placing the bottom on the support, and tightening nuts onto the stud bolts in the bottom. This is advantageous in terms of improving the workability of replacing the bottom of the second transport device.

[0020] In the present invention, it is preferable that the opening is an elongated hole extending along the direction of movement of the conveying body.

[0021] Due to manufacturing errors in the second conveying device, changes over time, expansion and contraction due to heat, etc., the positional relationship between the stud bolts on the bottom and the openings in the support part may change slightly along the direction of movement of the conveying body.

[0022] According to the present invention, the opening of the support part is an elongated hole that is aligned with the direction of movement of the conveying body, so even if the positional relationship between the bottom stud bolt and the opening of the support part changes slightly along the direction of movement of the conveying body, the bottom stud bolt can be easily inserted into the opening of the support part. This is advantageous in terms of improving the workability of replacing the bottom of the second transport device.

[0023] In the present invention, it is preferable that the portions of both horizontal portions above the bottom are provided with a chain guide arranged along the bottom, and a conveying chain supported and guided by the chain guide and driven along the chain guide toward the terminal end of the second conveying device, the conveying body is attached across the conveying chain of one horizontal portion and the conveying chain of the other horizontal portion, and is driven to move toward the terminal end of the second conveying device by the conveying chain, and the conveying chain and the chain guide are arranged on the horizontal portions so as not to protrude toward the bottom from the wall surface on the bottom side of the horizontal portion.

[0024] According to the present invention, a chain guide is provided along the bottom portion of the side portion above the bottom portion. A conveyor chain is supported and guided by the chain guide and driven along the chain guide. A conveyor body is attached across both conveyor chains and is moved and driven by the conveyor chains. According to the present invention, the conveying chain and the chain guide are provided on the lateral portion so as not to protrude from the wall surface on the bottom side of the lateral portion toward the bottom side.

[0025] This reduces the chance of the end of the bottom rubbing against the side when the bottom is removed (attached), and also reduces the chance of the end of the bottom rubbing against the conveying chain and chain guide, which is advantageous in terms of improving the ease of replacing the bottom of the second conveying device.

[0026] In the present invention, it is preferable that a plurality of mud removal openings for dropping mud downwards are provided in the bottom portion.

[0027] According to the present invention, when crops are transported by a transport body while rubbing against the bottom, mud adhering to the crops easily falls downward through the mud removal opening at the bottom, thereby reducing problems caused by mud adhering to the crops.

[0028] In the present invention, the second conveying device has a lower conveying section extending diagonally upward from the storage section and an upper conveying section extending diagonally upward from the upper end of the lower conveying section, and the attitude of the upper conveying section relative to the lower conveying section is set so that the angle of the upper conveying section relative to the horizontal plane is smaller than the angle of the lower conveying section relative to the horizontal plane, and it is preferable that the number of mud removal openings provided at the connection part between the lower conveying section and the upper conveying section at the bottom is set to a number less than the number of mud removal openings provided at parts of the bottom other than the connection part between the lower conveying section and the upper conveying section, or to zero.

[0029] When working with a sugarcane harvester, as mentioned above, the transport vehicle runs to the right or left of the sugarcane harvester, the second conveying device extends from the storage section to the side of the transport vehicle, and the terminal end of the second conveying device is positioned above the bed of the transport vehicle to perform work.

[0030] According to the present invention, the second conveying device has a lower conveying section and an upper conveying section, and is slightly bent at the connection portion between the lower conveying section and the upper conveying section. As a result, when the transport vehicle is traveling alongside the sugarcane harvester, the operator of the sugarcane harvester or the operator of the transport vehicle can easily position the terminal end of the second transport device above the center of the left and right sides of the transport vehicle's loading platform by operating the second transport device so that the aforementioned bent portion of the second transport device is positioned above the side wall (tilt board) of the loading platform of the transport vehicle.

[0031] According to the present invention, when the mud removal openings are provided at the bottom of the second conveying device, the number of mud removal openings at the aforementioned bent portion of the second conveying device is set to a number less than that at other portions of the bottom, or to zero. In the second conveying device, wear at the bent portion of the bottom is expected to progress more easily than at other portions of the bottom, so by setting the number of mud removal openings at the bent portion of the bottom to a small number or to zero, wear at the bent portion of the bottom is suppressed.

[0032] In the present invention, the second conveying device has a lower conveying section extending diagonally upward from the storage section and an upper conveying section extending diagonally upward from the upper end of the lower conveying section, and the attitude of the upper conveying section relative to the lower conveying section is set so that the angle of the upper conveying section relative to the horizontal plane is smaller than the angle of the lower conveying section relative to the horizontal plane, and it is preferable that the second conveying device is provided with a frame that is linear in side view and is connected across the lateral portion of the lower conveying section and the lateral portion of the upper conveying section.

[0033] When working with a sugarcane harvester, as mentioned above, the transport vehicle runs to the right or left of the sugarcane harvester, the second conveying device extends from the storage section to the side of the transport vehicle, and the terminal end of the second conveying device is positioned above the bed of the transport vehicle to perform work.

[0034] According to the present invention, the second conveying device has a lower conveying section and an upper conveying section, and is slightly bent at the connection portion between the lower conveying section and the upper conveying section. As a result, when the transport vehicle is traveling alongside the sugarcane harvester, the operator of the sugarcane harvester or the operator of the transport vehicle can easily position the terminal end of the second transport device above the center of the left and right sides of the transport vehicle's loading platform by operating the second transport device so that the aforementioned bent portion of the second transport device is positioned above the side wall (tilt board) of the loading platform of the transport vehicle.

[0035] In this case, when the transport vehicle approaches the sugarcane harvester, the side wall (tilt board) of the transport vehicle's loading platform may come into contact with the aforementioned bent portion of the second conveying device or the lower and upper conveying sections of the second conveying device.

[0036] According to the present invention, a straight frame is connected across the lateral portion of the lower conveying section and the lateral portion of the upper conveying section of the second conveying device, reinforcing the area around the aforementioned bending portion of the second conveying device, thereby reducing damage to the second conveying device due to contact with the side wall (tilt plate) of the transport vehicle's loading platform.

[0037] In the present invention, the second conveying device has a lower conveying section extending diagonally upward from the storage section and an upper conveying section extending diagonally upward from the upper end of the lower conveying section, and the attitude of the upper conveying section relative to the lower conveying section is set so that the angle of the upper conveying section relative to the horizontal plane is smaller than the angle of the lower conveying section relative to the horizontal plane, and it is preferable that the lower conveying section is divided, at an intermediate portion between the starting end and the ending end of the lower conveying section, into a first portion from the intermediate portion to the starting end of the lower conveying section and a second portion from the intermediate portion to the ending end of the lower conveying section, and the first portion and the second portion are connected to form the lower conveying section.

[0038] When working with a sugarcane harvester, as mentioned above, the transport vehicle runs to the right or left of the sugarcane harvester, the second conveying device extends from the storage section to the side of the transport vehicle, and the terminal end of the second conveying device is positioned above the bed of the transport vehicle to perform work.

[0039] According to the present invention, the second conveying device has a lower conveying section and an upper conveying section, and is slightly bent at the connection portion between the lower conveying section and the upper conveying section. As a result, when the transport vehicle is traveling alongside the sugarcane harvester, the operator of the sugarcane harvester or the operator of the transport vehicle can easily position the terminal end of the second transport device above the center of the left and right sides of the transport vehicle's loading platform by operating the second transport device so that the aforementioned bent portion of the second transport device is positioned above the side wall (tilt board) of the loading platform of the transport vehicle.

[0040] The second conveying device is long because it extends above the side wall (tilt board) of the platform of the transport vehicle. According to the present invention, by removing the upper part (the second part of the second conveying device (lower conveying section) and the upper conveying section) from the first part of the second conveying device (lower conveying section), the height of the second conveying device is sufficiently reduced, making it easier to transport the sugarcane harvester by placing it on the bed of a truck.

[0041] In the present invention, it is preferable that the second portion and the upper conveying portion have portions having a thickness smaller than that of the first portion.

[0042] According to the present invention, since there are portions with small plate thickness in the second part and upper conveying part of the second conveying device (lower conveying section), the second part and upper conveying section of the second conveying device (lower conveying section) can be made lighter, making it easier to raise and lower the second conveying device and change its orientation, thereby improving the operability of the second conveying device.

[0043] In the present invention, a plurality of pipe frames are provided connected to the horizontal portion of the lower conveying section and the horizontal portion of the upper conveying section, and it is preferable that the pipe frames of the second section and the upper conveying section have a thickness smaller than that of the pipe frames of the first section.

[0044] According to the present invention, by adopting a pipe frame with a small plate thickness in the second part and upper conveying part of the second conveying device (lower conveying part), it is possible to easily obtain a portion with a small plate thickness in the second part and upper conveying part of the second conveying device (lower conveying part).

[0045] In the present invention, it is preferable that a connecting member be provided that connects the horizontal portion of the first portion and the horizontal portion of the second portion at a portion above the bottom portion in a side view.

[0046] According to the present invention, in addition to the first and second parts of the second conveying device (lower conveying section) being connected, a connecting member is connected across the horizontal portion of the first part and the horizontal portion of the second part of the second conveying device (lower conveying section), so that the first and second parts of the second conveying device (lower conveying section) are connected to each other with sufficient strength.

[0047] According to the present invention, since the connecting member is provided at a portion above the bottom of the second conveying device, the connecting member is effective in preventing a situation in which the second portion of the second conveying device (lower conveying section) attempts to move downward relative to the first portion, causing the upper portion of the connecting portion between the first and second portions of the second conveying device (lower conveying section) to attempt to open.

[0048] In the present invention, it is preferable that the division between the first part and the second part has, in a side view, a first division part formed along a direction perpendicular to the bottom position at the position of the bottom, a second division part formed along a direction perpendicular to the bottom at a part of the upper part of the horizontal part closer to the starting end of the lower conveying part than the first division part in a side view, and a third division part connected across the upper end of the first division part and the lower end of the second division part.

[0049] When connecting devices such as bolts are removed from the first and second parts of the second conveying device (lower conveying section), the second part of the second conveying device (lower conveying section) and the upper conveying section will tend to move downward relative to the first part of the second conveying device (lower conveying section), which is supported by the sugarcane harvester.

[0050] According to the present invention, when the second part and the upper conveying part of the second conveying device (lower conveying part) attempt to move downward, the second part and the upper conveying part of the second conveying device (lower conveying part) are supported by the third divided part, so that the second part and the upper conveying part of the second conveying device (lower conveying part) do not move downward. This allows the second part and the upper conveying part of the second conveying device (lower conveying part) to be connected and disconnected smoothly.

[0051] According to the present invention, the division between the first and second portions of the second conveying device (lower conveying section) includes a first divided portion and a second divided portion. As a result, when the second part of the second conveying device (lower conveying section) and the upper conveying section are connected, the longitudinal positioning of the second part of the second conveying device (lower conveying section) and the upper conveying section is achieved by aligning the first divided section with the second divided section, so that the second part of the second conveying device (lower conveying section) and the upper conveying section can be connected smoothly. [Brief explanation of the drawings]

[0052] [Figure 1] FIG. 2 is a left side view of the sugarcane harvester. [Figure 2] FIG. 2 is a left side view of the vicinity of the sorting device and the storage section. [Figure 3] FIG. 2 is a plan view of the vicinity of the storage section. [Figure 4] FIG. 10 is a left side view of the vicinity of the first portion of the lower conveying section of the second conveying device. [Figure 5] 5 is a cross-sectional view taken along the line VV in FIG. 4. [Figure 6] FIG. 10 is a left side view of the vicinity of the second portion of the lower conveying section and the upper conveying section of the second conveying device. [Figure 7] 10 is an exploded left side view of the vicinity of the connecting portion between the first portion and the second portion of the lower conveying section of the second conveying device. FIG. [Figure 8] 10 is a cross-sectional view of a connecting portion between a first portion and a second portion of a lower conveying section of a second conveying device. FIG. [Figure 9] FIG. [Figure 10] FIG. 10 is a cross-sectional view of the vicinity of a chain guide in the second conveying device. [Figure 11] FIG. 10 is an exploded plan view of the vicinity of a first portion of the lower transfer section of the second transfer device. [Figure 12] FIG. 10 is an exploded plan view of the vicinity of the second portion of the lower conveying section and the upper conveying section of the second conveying device. [Figure 13] FIG. 10 is a plan view showing the attached state of the bottom of the second transport device. [Figure 14] 14 is a cross-sectional view taken along the line XIV-XIV in FIG. 13. [Figure 15] 14 is a cross-sectional view taken along the line XV-XV in FIG. 13. DETAILED DESCRIPTION OF THE INVENTION

[0053] Figures 1 to 15 show a sugarcane harvester, and in Figures 1 to 15, F indicates the forward direction, B indicates the backward direction, U indicates the upward direction, D indicates the downward direction, R indicates the rightward direction, and L indicates the leftward direction.

[0054] (Overall configuration of sugarcane harvester) As shown in Fig. 1, the reaping unit 3 and the first conveying device 4 are connected to form a machine body 5. The first conveying device 4 extends obliquely upward and rearward from the rear of the reaping unit 3. The right and left front wheels 1 are attached to the right and left parts of the reaping unit 3, and the right and left rear wheels 2 are provided at the bottom of the rear part of the first conveying device 4, and the machine body 5 is supported by the front wheels 1 and the rear wheels 2. The first conveying device 4 is provided in the front-to-rear direction between the right and left rear wheels 2 in a plan view.

[0055] The driving section 6 is provided above the reaping section 3, and a headlight 17 that illuminates the area ahead of the reaping section 3 is provided at the front end of the roof section 6a of the driving section 6. A sorting device 7 is connected to the terminal end of the first conveying device 4. A storage section 8 is provided below the sorting device 7, and a second conveying device 9 extends from the storage section 8 diagonally upward and rearward.

[0056] (Sugarcane harvester in operation) As shown in Figure 1, as the machine body 5 moves forward, the crops in the field are felled forward by the reaping unit 3, the bases of the plants are cut, and the crops are supplied from the bases to the first conveying device 4. The crops supplied to the first conveying device 4 are transported diagonally backward along the first conveying device 4, and at the end of the first conveying device 4, they are cut to a predetermined length and supplied to the upper part of the interior of the sorting device 7.

[0057] As shown in Figures 1 and 2, crops supplied to the sorting device 7 pass through the inside of the sorting device 7 and fall into the storage section 8 below. The sorting device 7 is equipped with a sorting fan 13, which generates a sorting wind directed upward inside the sorting device 7. The crops fall into the storage section 8 below. Impurities are separated from the crops by the sorting wind and are discharged from the discharge outlet 14 of the sorting device 7.

[0058] A transport vehicle such as a truck travels to the right or left of the sugarcane harvester, and a second conveying device 9 extends from the storage section 8 laterally toward the transport vehicle, with the terminal end of the second conveying device 9 located above the bed of the transport vehicle. The crops that fall into the storage section 8 are transported diagonally upward by the second conveying device 9 and supplied from the terminal end of the second conveying device 9 to the bed of the transport vehicle.

[0059] (Configuration of sorting device 7) As shown in FIG. 2, the sorting device 7 has a main body 10, an upper portion 11, a hydraulic motor 12, a sorting fan 13, an outlet 14, and the like.

[0060] The main body 10 is formed in a cylindrical shape extending in the vertical direction and is connected to the end of the first conveying device 4. A plurality of short chains 15 are attached to the lower rear part of the main body 10 and hang down (see FIG. 3).

[0061] The upper part 11 is formed in a box shape, having a top plate part 11a, right and left side parts 11b, and a front part 11c, and is attached to the upper end part of the main body part 10. The outlet 14 is formed in a box shape, having a top plate part 14a, right and left side parts 14b, is open toward the rear, and is attached to the rear part of the upper part 11.

[0062] A cylindrical member 16 is connected to the top plate portion 11a of the upper portion 11 and extends downward, and a sorting fan 13 is rotatably attached to the lower end of the cylindrical member 16. A hydraulic motor 12 is attached to the top plate portion 11a of the upper portion 11. The power of the hydraulic motor 12 is transmitted to the sorting fan 13 via a transmission shaft (not shown) inside the cylindrical member 16, and the sorting fan 13 is rotated.

[0063] As the sorting fan 13 is rotated, air below the main body 10 is introduced into the inside of the main body 10, rises inside the main body 10, passes through the sorting fan 13 and the inside of the upper part 11, and is discharged horizontally from the discharge outlet 14.

[0064] At the end of the first conveying device 4, there are provided an upper cutting blade 4a that is driven to rotate counterclockwise in FIG. 2, a lower cutting blade 4a that is driven to rotate clockwise in FIG. 2, and a guide plate 4b. The crops are cut to a predetermined length as they pass between the upper and lower cutting blades 4a of the first conveying device 4 and are released toward the rear, where they hit the guide plate 4b of the first conveying device 4 and are then thrown into the sorting device 7 (main body 10).

[0065] The crop passes through the inside of the sorting device 7 (main body 10) and falls into the storage section 8 below. Impurities are separated from the crop by the sorting wind of the sorting fan 13 and are discharged horizontally from the discharge outlet 14 of the sorting device 7.

[0066] (Support structure of storage section 8 and second transfer device 9) 1 and 2, a support frame 18 is connected to the rear lower part of the first conveying device 4. A swing frame 19 is attached to the support frame 18 so as to be swingable about an axis P1 along the vertical direction. A hydraulic cylinder 20 that swings the swing frame 19 is attached across the support frame 18 and the swing frame 19.

[0067] The starting end of the second conveying device 9 is attached to the swing frame 19 so as to be swingable around a horizontal axis P2. The storage unit 8 is provided at the starting end of the second conveying device 9, and the starting end of the second conveying device 9 forms the bottom of the storage unit 8. In this case, the axis P2 corresponds to the fulcrum of the starting end of the second conveying device 9.

[0068] A ring member 21 is attached to the main body 10 of the sorting device 7 so as to be rotatable along the outer periphery of the main body 10 of the sorting device 7. Right and left hydraulic cylinders 22 are connected to the right and left parts of the ring member 21. Right and left link members 23 are attached to the ends of the hydraulic cylinder 22 so as to be swingable around an axis P3 extending in the horizontal direction, and are attached to the second conveying device 9 so as to be swingable around an axis P4 extending in the horizontal direction.

[0069] By operating the hydraulic cylinder 22 to extend or retract, the second transfer device 9 (storage section 8) is operated to swing up and down around the axis P2, thereby changing the posture of the second transfer device 9. The state shown in Figures 1 and 2 is a state in which the hydraulic cylinder 22 is fully contracted and the second transfer device 9 is operated to the highest position.

[0070] When the swing frame 19 is swung right and left by the hydraulic cylinder 20, the ring member 21 is rotated in conjunction with this relative to the main body 10 of the sorting device 7. The second conveying device 9 (storage section 8) and the hydraulic cylinder 22 are changed in orientation to the right and left as a unit, and their orientation is changed within a range extending from the rear of the machine body 5 to the right and left outward.

[0071] When the second conveying device 9 comes into contact with the side wall (tilt) of the platform of the transport vehicle and is about to be lifted, the link member 23 swings upward around the axis P3, thereby allowing the second conveying device 9 to be lifted.

[0072] (Configuration of storage section 8) 2 and 3, the storage section 8 has a front outer wall section 24, right and left outer wall sections 25, a front section 26 of a second conveying device 9 (described later), right and left side sections 33, and a bottom section 49. The front section 26, side sections 33, and bottom section 49 of the second conveying device 9 form the bottom portion of the storage section 8.

[0073] The outer wall portion 24 is connected to the front portion 26 of the second conveying device 9 and extends diagonally forward and upward. The outer wall portion 25 is connected to the lateral portion 33 of the second conveying device 9 and extends diagonally outward and upward. The rear portion of the outer wall portion 24 and the front portion of the outer wall portion 25 are connected, and a plurality of elongated mud removal openings 24a, 25a are opened in the outer wall portions 24, 25. The chain 15 of the sorting device 7 is located above the bottom portion 49 of the second conveying device 9.

[0074] The interior of the storage section 8 (the front section 26, side section 33 and bottom section 49 of the second conveying device 9) is surrounded in plan view by the outer wall sections 24, 25 and the chain 15 of the sorting device 7. The lower end of the sorting device 7 (main body section 10) and the upper end of the storage section 8 (outer wall sections 24, 25) are arranged with a gap between them in the vertical direction.

[0075] As described above, the crops that fall from the sorting device 7 (main body 10) fall to the bottom of the storage section 8 (the front section 26, side section 33, and bottom section 49 of the second conveying device 9) and are stored there. The mud easily escapes to the outside through the mud removal openings 24a, 25a in the outer wall sections 24, 25.

[0076] (Overall configuration of second conveyance device 9) As shown in FIG. 1, the second conveying device 9 has an upper conveying section 29 and a lower conveying section 30, and is formed in the shape of a channel as a whole.

[0077] The lower conveying section 30 extends obliquely upward from the storage section 8. In the intermediate section between the starting end and the terminal end (upper end) of the lower conveying section 30, it is divided into a first section 31 extending from the intermediate section toward the starting end of the lower conveying section 30, and a second section 32 extending from the intermediate section toward the terminal end (upper end) of the lower conveying section 30. The first section 31 and the second section 32 are connected to form the lower conveying section 30.

[0078] In the lower conveying section 30, the first section 31 has a lower section 31a extending obliquely upward from the storage section 8 and an upper section 31b extending obliquely upward from the terminal end (upper end) of the lower section 31a. The upper section 31b is configured to be longer than the lower section 31a, and the second section 32 is configured to be shorter than the upper section 31b of the first section 31.

[0079] In the lower conveying section 30, the upper portion 31b and the second portion 32 of the first portion 31 are connected in a straight line. The attitude (angle) of the upper portion 31b of the first portion 31 with respect to the lower portion 31a is set so that the angles of the upper portion 31b of the first portion 31 and the second portion 32 with respect to the horizontal plane (ground) are greater than the angle of the lower portion 31a of the first portion 31 with respect to the horizontal plane (ground).

[0080] The upper conveying section 29 extends obliquely upward from the terminal end (upper end) of the lower conveying section 30, and is configured to be shorter than the upper portion 31b of the first portion 31 of the lower conveying section 30. The attitude (angle) of the upper conveying section 29 with respect to the lower conveying section 30 is set so that the angle of the upper conveying section 29 with respect to the horizontal plane (ground) is smaller than the angle of the lower conveying section 30 (the upper portion 31b and second portion 32 of the first portion 31) with respect to the horizontal plane (ground).

[0081] (Positional relationship between the sorting device 7, the storage unit 8, and the second transport device 9) For example, when the sugarcane harvester is transported mounted on the bed of a truck, the sugarcane harvester climbs up a rung provided between the bed of the truck and the ground, thereby loading the sugarcane harvester onto the bed of the truck. As shown in Figures 1 and 2, the hydraulic cylinder 22 is operated to its most contracted state, and the second conveying device 9 is operated to its highest position.

[0082] As described above, when the sugarcane harvester climbs the running board, the machine body 5 is raised at the front. In this case, the support frame 18 and the swing frame 19 are placed at the lowest position (the lowest position where the departure angle is ensured) among the heights at which the support frame 18, the swing frame 19 and the second conveying device 9 are prevented from contacting the ground, and the angle of the lower part 31a of the first part 31 of the second conveying device 9 with the horizontal plane (the ground) is set.

[0083] 1 and 2, the support frame 18 and the swing frame 19 are disposed at approximately the same height as the axle 2a of the rear wheel 2 in a side view, and are disposed at a sufficiently low position in the body 5. In this case, the position of the axle 2a of the rear wheel 2 is the lowest position mentioned above.

[0084] By positioning the support frame 18 and swing frame 19 at a low position, the vertical distance between the upper end (sorting fan 13) of the main body 10 of the sorting device 7 and the upper end of the storage section 8 (outer wall sections 24, 25) is sufficiently large.

[0085] As a result, even if the sorting fan 13 in the sorting device 7 is rotated at a low speed, the sorting wind of the sorting fan 13 easily separates the impurities from the crops and discharges them from the discharge outlet 14 of the sorting device 7. By rotating the sorting fan 13 at a low speed, the durability of the hydraulic motor 12, the sorting fan 13, etc. is improved.

[0086] (Configuration of the lower part 31a of the first section 31 in the lower conveying section 30 of the second conveying device 9) As shown in Figures 1, 3, and 4, the lower portion 31a of the first part 31 of the lower conveying section 30 is provided with right and left frames 45, 46, right and left vertical frames 47, 48, a front portion 26, right and left horizontal portions 33, bottom portions 49, 50 (see Figure 11), support frames 37, 38, 39 (see Figure 11), etc.

[0087] A vertical frame 47 is connected to the front ends of the frames 45 and 46, and the semi-cylindrical front portion 26 is connected to the vertical frame 47. As will be described later, frames 51, 52, and 53 are provided in the upper portion 31b of the first portion 31 of the lower conveying section 30. Frame 51 is connected to frames 45 and 46, frame 52 is connected to frame 45, frame 53 is connected to frame 46, and vertical frame 48 is connected to frames 46 and 51.

[0088] The horizontal portions 33 are connected to the frames 45 and extend upward. Bottom portions 49, 50 are provided across the lower portions of the right and left horizontal portions 33 (right and left frames 45). As described above, the outer wall 25 of the storage unit 8 is connected to the horizontal portion 33 and extends obliquely outward and upward. The frame 46 (the second conveying device 9 and the storage unit 8) is attached to the swing frame 19 so as to be swingable around the axis P2.

[0089] (Configuration of upper portion 31b of first section 31 in lower conveying section 30 of second conveying device 9) As shown in Figures 1, 3, 4, and 5, the upper portion 31b of the first part 31 of the lower conveying section 30 is provided with right and left frames 51, 52, 53, right and left vertical frames 54, 55, right and left horizontal portions 34, a bottom portion 56 (see Figure 11), support frames 37, 38, 39 (see Figure 11), a horizontal frame 57, covers 58, 59, etc.

[0090] Vertical frames 54 and 55 are connected across frames 51, 52, and 53, a horizontal frame 57 is connected across frame 53, and a flat cover 58 is connected to the horizontal frame 57.

[0091] The horizontal portion 34 has a first side wall 41 and a second side wall 42. The first side wall 41 is connected across the frames 51, 52, and the second side wall 42 is connected to the frame 51 and extends upward. A bottom portion 56 is provided across the lower parts of the first side walls 41 of the right and left horizontal portions 34 (the right and left frames 52).

[0092] The second side wall 42 of the horizontal portion 34 has a lower portion 42a and an upper portion 42b. The upper portion 42b extends vertically upward from the frame 51. The lower portion 42a extends diagonally outward and upward from the frame 51, is connected to the outer wall portion 25 of the storage portion 8, and is located below the sorting device 7 (main body portion 10) (see FIG. 2).

[0093] 4, in a side view, in a direction perpendicular to the bottom 56 (frame 52), a distance L1 is assumed to be from the bottom 56 (frame 52) to the upper end of the lower portion 42a of the second side wall 42, and a distance L2 is assumed to be from the bottom 56 (frame 52) to the upper end of the upper portion 42b of the second side wall 42. Distance L1 is shorter than distance L2.

[0094] As shown in Figure 3, in a plan view, a distance W1 between the upper ends of the lower portions 42a of the right and left second side walls 42 is assumed, and a distance W2 between the upper ends of the upper portions 42b of the right and left second side walls 42 is assumed.

[0095] The distance W2 is the same throughout the entire upper portion 42b of the second side wall 42. The distance W1 is approximately the same as the distance W2 at the connecting portion between the lower portion 42a and the upper portion 42b of the second side wall 42, and becomes larger than the distance W2 at a position closer to the storage section 8 (outer wall portion 25).

[0096] (Configuration of the cover 59 of the second transfer device 9) As shown in FIGS. 2 to 5, in the upper portion 31b of the first part 31 of the lower conveying section 30 of the second conveying device 9, a cover 59 is attached across the upper ends of the upper portions 42b of the right and left second side walls 42.

[0097] The cover 59 has a flat plate portion 59a attached to the upper end of the upper portion 42b of the second side wall 42 (horizontal portion 34), and a plurality of reinforcing frames 59b attached to the lower surface of the flat plate portion 59a. An upper end portion 59c of the cover 59 is located at the dividing portion (connecting portion) between the first portion 31 and the second portion 32 of the lower conveying section 30, and a lower end portion 59d of the cover 59 is located at the connecting portion between the lower portion 42a and the upper portion 42b of the second side wall 42.

[0098] As shown in FIG. 2, it is assumed that an imaginary line LL1 is an extension of the top plate portion 14a of the discharge port 14 of the sorting device 7 in a side view. In this case, the area below the imaginary line LL1 corresponds to the flow area of ​​the impurities flowing outward from the discharge port 14 of the sorting device 7, and the imaginary line LL1 corresponds to the upper end of the flow area.

[0099] 1 and 2 show a state in which the hydraulic cylinder 22 is fully contracted and the second conveying device 9 is fully raised. In this state, the upper end 59c of the cover 59 is located above the imaginary line LL1 (the upper end of the flow area) in a side view.

[0100] When the hydraulic cylinder 22 is fully extended and the second conveying device 9 is lowered to its lowest position, the upper end 59c of the cover 59 is positioned above the imaginary line LL1 (the upper end of the flow area) or at a position substantially flush with the imaginary line LL1 (the upper end of the flow area). This reduces the chance of impurities discharged from the discharge port 14 of the sorting device 7 getting into the crops on the second conveying device 9.

[0101] (Configuration of spillage prevention part 27) - 1 2, 3, and 4, there are provided right and left spill prevention parts 27 made of elastically deformable rubber plates. The spill prevention parts 27 are attached across the upper end of the outer wall part 25 of the storage part 8 and the upper end of the lower part 42a of the second side wall 42 of the second conveying device 9.

[0102] In this case, the lower portion 42a of the second side wall 42 of the second conveying device 9 corresponds to the portion of the horizontal section 34 located below the sorting device 7, and corresponds to the installation portion of the horizontal section 34 where the spillage prevention unit 27 is provided. The upper portion 42b of the second side wall 42 of the second conveying device 9 corresponds to the non-installation portion of the horizontal section 34 where the spillage prevention unit 27 is not provided.

[0103] The spill prevention portion 27 extends almost vertically upward from the upper end of the outer wall portion 25 of the storage portion 8. The spill prevention portion 27 extends obliquely upward and laterally inward (to the left-right center of the storage portion 8) from the upper end of the lower portion 42a of the second side wall 42 of the second conveying device 9.

[0104] As shown in Figure 4, in a side view, a distance L2 is assumed to be from the bottom 56 (frame 52) to the upper end of the upper portion 42b of the second side wall 42 in a direction perpendicular to the bottom 56 (frame 52), and a distance L3 is assumed to be from the bottom 56 (frame 52) to the upper end of the spill prevention portion 27.

[0105] Distance L3 is approximately the same as distance L2 at the connection between lower portion 42a and upper portion 42b of second side wall 42, and the closer to storage section 8 (outer wall portion 25), the greater the value of distance L2.

[0106] As shown in Figure 3, in a planar view, a distance W1 between the upper ends of the lower portions 42a of the right and left second side walls 42 is assumed, a distance W2 between the upper ends of the upper portions 42b of the right and left second side walls 42 is assumed, and a distance W3 between the upper ends of the right and left spill prevention portions 27 is assumed.

[0107] The distance W3 is approximately the same as the distance W2 at the connection between the lower portion 42a and the upper portion 42b of the second side wall 42, and becomes larger than the distance W2 at a position closer to the storage section 8 (outer wall portion 25). The distance W3 is slightly smaller than the distance W1.

[0108] As described above, when crops are loaded from the first conveying device 4 into the inside of the sorting device 7 (main body 10), pass through the inside of the sorting device 7 (main body 10), and fall into the storage section 8, the crops are prevented from spilling out of the storage section 8 by the outer wall sections 24, 25 of the storage section 8, the chain 15 of the sorting device 7 (main body 10), and the spill prevention section 27.

[0109] (Configuration of spillage prevention part 27) - 2 When working with a sugarcane harvester, as described above, the transport vehicle runs to the right or left of the sugarcane harvester, the second conveying device 9 extends from the storage section 8 to the side of the transport vehicle, and the upper conveying section 29 of the second conveying device 9 is positioned above the loading platform of the transport vehicle, and work is carried out in this state.

[0110] Since the lower conveying section 30 and the upper conveying section 29 of the second conveying device 9 are connected in a slightly bent state (see Figure 1), the operator of the sugarcane harvester or the operator of the transport vehicle can easily position the upper conveying section 29 of the second conveying device 9 above the center of the left and right sides of the transport vehicle's loading platform by operating the device so that the connecting part between the lower conveying section 30 and the upper conveying section 29 of the second conveying device 9 is positioned above the side wall (tilt board) of the transport vehicle's loading platform.

[0111] In the above-described state, the second conveying device 9 may come into contact with the side wall (tilt) of the platform of the transport vehicle and attempt to be lifted. When the second conveying device 9 attempts to be lifted, the link member 23 (see FIG. 2) swings upward around the axis P3, thereby allowing the second conveying device 9 to be lifted.

[0112] As shown in Figure 2, when the hydraulic cylinder 22 is fully contracted and the second conveying device 9 is operated to the highest position, if the second conveying device 9 is lifted, the spill prevention part 27 may rise together with the second conveying device 9 and come into contact with and be pressed against the sorting device 7 (main body part 10).

[0113] Even if the second conveying device 9 rises and the spill prevention part 27 comes into contact with the sorting device 7 (main body part 10), the spill prevention part 27 elastically deforms, thereby absorbing the contact between the spill prevention part 27 and the sorting device 7 (main body part 10).

[0114] Since the spill prevention section 27 extends diagonally upward and laterally inward (toward the left-right center of the storage section 8) from the upper end of the lower part 42a of the second side wall 42 of the second conveying device 9 (see Figure 3), the spill prevention section 27 is likely to elastically deform laterally inward (toward the left-right center of the storage section 8) upon contact with the sorting device 7 (main body section 10).

[0115] (Configuration of the second portion 32 and the upper conveying portion 29 in the lower conveying portion 30 of the second conveying device 9)-1 As shown in Figure 6, the second part 32 of the lower conveying section 30 is provided with right and left frames 61, 62, 63, right and left vertical frames 64, right and left horizontal sections 35, a bottom 65 (see Figure 12), support frames 37, 38, 39 (see Figure 12), a horizontal frame 66, etc.

[0116] The upper conveying section 29 is provided with right and left frames 71, 72, 73, right and left vertical frames 74, right and left horizontal sections 36, a bottom section 75 (see FIG. 12), support frames 37, 38, 39 (see FIG. 12), a horizontal frame 76, and the like.

[0117] In the second portion 32 of the lower conveying section 30, a vertical frame 64 is connected across the frames 61, 62, and 63, and a horizontal frame 66 is connected across the frame 63. The horizontal portion 35 has a first side wall 43 and a second side wall 44. The first side wall 43 is connected across the frames 61, 62, and the second side wall 44 is connected to the frame 61 and extends upward. A bottom portion 65 is provided across the lower parts of the first side walls 43 of the right and left horizontal portions 35 (the right and left frames 62).

[0118] In the upper conveying section 29, a vertical frame 74 is connected across frames 71, 72, and 73, and a horizontal frame 76 is connected across frame 73. A horizontal section 36 is connected across frames 71 and 72. A bottom section 75 is provided across the lower parts of the right and left horizontal sections 36 (right and left frames 72).

[0119] In the second portion 32 of the lower conveying section 30 and the upper conveying section 29, frames 61 and 71 are connected, and frames 62 and 72 are connected. Frame 73 is connected across frames 62 and 63, vertical frame 64, and horizontal section 35 (first side wall 43), and is connected to frames 71 and 72 and vertical frame 74. Right and left frames 67 are connected to vertical frames 64 and 74, the first side wall 43 of horizontal section 35, and horizontal section 36.

[0120] This connects the second portion 32 of the lower conveying section 30 to the upper conveying section 29. As described above, the attitude (angle) of the upper conveying section 29 relative to the lower conveying section 30 is set so that the angle of the upper conveying section 29 relative to the horizontal plane (ground surface) is smaller than the angle of the lower conveying section 30 (the upper portion 31b and second portion 32 of the first portion 31) relative to the horizontal plane (ground surface). In this case, the frames 67, 73 correspond to a linear frame in a side view that connects the horizontal portion 35 (first side wall 43) of the lower conveying section 30 (second portion 32) and the horizontal portion 36 of the upper conveying section 29.

[0121] (Configuration of the second portion 32 and the upper conveying portion 29 in the lower conveying portion 30 of the second conveying device 9)-2 6, right and left guide frames 68 are connected across the ends of the horizontal frames 66 of the second portion 32 of the lower conveying section 30 and the ends of the horizontal frames 76 of the upper conveying section 29. A flat guide plate 69 is connected across the right and left guide frames 68.

[0122] As mentioned above, when the transport vehicle travels to the right or left of the sugarcane harvester and the upper transport section 29 of the second transport device 9 is positioned above the bed of the transport vehicle, if the second transport device 9 comes into contact with the side wall (tilt plate) of the bed of the transport vehicle, it is mainly the guide frame 68 and guide plate 69 that come into contact with the side wall (tilt plate) of the bed of the transport vehicle, thereby preventing damage to the second transport device 9 due to contact with the side wall (tilt plate) of the bed of the transport vehicle.

[0123] Lights 77 are attached to the right and left portions of the lower conveying section 30 near the connection between the second section 32 and the upper conveying section 29. Lights 78 are attached to the right and left portions of the upper conveying section 29 near the terminal end (upper end) thereof. The lights 77 and 78 illuminate the areas near the second section 32 and the upper conveying section 29 of the lower conveying section 30 and the guide plate 69, and illuminate the area below the guide plate 69.

[0124] When the operator of the driver's section 6 of the sugarcane harvester turns on the headlight 17 (see Figure 1), lights 77, 78 are automatically turned on in conjunction with this. By turning on lights 77, 78 during nighttime work, it becomes easier for the operator of the sugarcane harvester or the operator of the transport vehicle to visually check the connecting part between the lower transport section 30 and the upper transport section 29 of the second transport device 9 and the side wall (tilt board) of the loading platform of the transport vehicle.

[0125] (Connection structure between the first part 31 and the second part 32 of the lower conveying section 30 of the second conveying device 9)-1 As shown in Figures 7 and 8, right and left first flanges 81, right and left second flanges 82, and right and left third flanges 83 are connected to the terminal end (upper end) of the first part 31 (upper part 31b) of the lower conveying section 30.

[0126] The first flange 81 is connected across the ends of the frames 52, 53 and the lower end of the first side wall 41 (horizontal portion 34), and is formed along a direction perpendicular to the bottom portion 56 (frames 52, 53) in a side view.

[0127] The second flange 82 is connected across the end of the frame 51 and the upper end of the first side wall 41 (horizontal portion 34), and is located closer to the starting end (storage portion 8) of the lower conveying section 30 than the first flange 81 when viewed from the side, and is formed along a direction perpendicular to the bottom 56 (frame 51).

[0128] The third flange 83 is connected to the end of the upper and lower middle part of the first side wall 41 (horizontal portion 34), and is connected across the upper end of the first flange 81 and the lower end of the second flange 82, and is inclined relative to the bottom 56 (frames 51, 52) when viewed from the side.

[0129] The starting end (lower end) of the second portion 32 of the lower conveying section 30 is connected to right and left first flanges 91, right and left second flanges 92, and right and left third flanges 93. The first flange 91 is connected across the ends of the frames 62, 63 and the lower end of the first side wall 43 (horizontal portion 35), and is formed along a direction perpendicular to the bottom portion 65 (frames 62, 63) in a side view.

[0130] The second flange 92 is connected across the end of the frame 61 and the upper end of the first side wall 43 (horizontal portion 35), and is located closer to the starting end (storage section 8) of the lower conveying section 30 than the first flange 91 when viewed from the side, and is formed along a direction perpendicular to the bottom 65 (frame 61).

[0131] The third flange 93 is connected to the end of the upper and lower middle part of the first side wall 43 (horizontal portion 35), and is connected across the upper end of the first flange 91 and the lower end of the second flange 92, and is inclined relative to the bottom 65 (frames 61, 62) when viewed from the side.

[0132] In this case, the first flanges 81, 91 correspond to the first divided portion, the second flanges 82, 92 correspond to the second divided portion, and the third flanges 83, 93 correspond to the third divided portion.

[0133] A channel-shaped support frame 40 is connected across the ends of the right and left frames 52. A channel-shaped support frame 60 is connected across the ends of the right and left frames 62. An angled cross frame 79 is connected across the ends of the right and left frames 53. An angled cross frame 80 is connected across the ends of the right and left frames 63.

[0134] (Connection structure between the first part 31 and the second part 32 of the lower conveying section 30 of the second conveying device 9)-2 As shown in Figures 7 and 8, the terminal end (upper end) of the first part 31 of the lower conveying section 30 and the starting end (lower end) of the second part 32 are aligned, and the first flanges 81, 91, the second flanges 82, 92, the third flanges 83, 93, the support frames 40, 60, and the horizontal frames 79, 80 are aligned.

[0135] The right and left guide plates 28 are connected to the terminal ends (upper ends) of the first side walls 41 (horizontal portions 34). When the terminal end (upper end) of the first portion 31 of the lower conveying section 30 and the starting end (lower end) of the second portion 32 are aligned, the positions of the first side walls 41 (horizontal portions 34) and the first side walls 43 (horizontal portions 35) are aligned by the guide plates 28.

[0136] The lower portions of the first flanges 81 and 91 are connected by a bolt 70 . The bolts 70 connect the upper and lower intermediate portions of the first flanges 81, 91 to the support frames 40, 60. The bolts 70 connect the upper portions of the first flanges 81 and 91, connect the second flanges 82 and 92, and connect the third flanges 83 and 93. The horizontal frames 79 and 80 are connected by the bolts 70 .

[0137] (Configuration of the connecting member 84 connecting the first portion 31 and the second portion 32 of the lower conveying section 30 of the second conveying device 9) As shown in FIGS. 7 and 8, in the lower conveying section 30, a connecting member 84 connects the horizontal portion 34 of the first section 31 (upper section 31b) and the horizontal portion 35 of the second section 32.

[0138] 9, the connecting member 84 has right and left first frames 85, right and left second frames 86, and a third frame 87. The first frame 85 is formed in a square pipe shape, and flat plate-shaped mounting portions 85a, 85b, and 85c are connected to the first frame 85.

[0139] The second frame 86 is formed in a channel shape and is provided with mounting portions 86a and 86b, and is connected to the middle portion of the first frame 85 and extends upward. The third frame 87 is formed by connecting a square pipe material and a channel material, and is connected to the upper end portion of the second frame 86.

[0140] (Connection state between the first portion 31, the second portion 32, and the connecting member 84 of the lower conveying section 30 of the second conveying device 9) 7, 8 and 9, flat plate-shaped mounting portions 51a and 51b are connected to a frame 51. Flat plate-shaped mounting portions 61a and 61b are connected to a frame 61.

[0141] The terminal end (upper end) of the second side wall 42 (upper portion 42b) of the horizontal portion 34 is bent to provide an attachment portion 42c, and an angled attachment portion 42d is connected to the second side wall 42 (upper portion 42b) of the horizontal portion 34. The starting end (lower end) of the second side wall 44 of the horizontal portion 35 is bent to provide an attachment portion 44a, and an angled attachment portion 44b is connected to the second side wall 44 of the horizontal portion 35.

[0142] The attachment portions 85a and 85c of the connecting member 84 (first frame 85) are inserted into the gap between the frame 51 and the second side wall 42 (upper portion 42b). The attachment portion 85a of the connecting member 84 (first frame 85) and the attachment portion 51a of the frame 51 are connected by a bolt 88. The mounting portion 85c of the connecting member 84 (first frame 85) and the mounting portion 51b of the frame 51 are connected by a bolt 88. The first frame 85 of the connecting member 84 and the mounting portion 42d of the second side wall 42 (upper portion 42b) are connected by bolts 88. A bolt 88 connects the attachment portion 86a of the connecting member 84 (second frame 86) and the attachment portion 42c of the second side wall 42 (upper portion 42b).

[0143] The attachment portions 85b and 85c of the connecting member 84 (first frame 85) are inserted into the gap between the frame 61 and the second side wall 44. The attachment portion 85b of the connecting member 84 (first frame 85) and the attachment portion 61a of the frame 61 are connected by a bolt 88. The mounting portion 85c of the connecting member 84 (first frame 85) and the mounting portion 61b of the frame 61 are connected by a bolt 88. The first frame 85 of the connecting member 84 and the mounting portion 44b of the second side wall 44 are connected by a bolt 88. The bolts 88 connect the attachment portion 86b of the connecting member 84 (second frame 86) and the attachment portion 44a of the second side wall 44.

[0144] Various hydraulic hoses (not shown) and harnesses (not shown) pass through the inside of the third frame 87 of the connecting member 84, and the hydraulic hoses and harnesses are arranged so as to straddle the upper part of the second conveying device 9 (lower conveying section 30).

[0145] (Relationship between the first portion 31 of the lower conveying section 30, the second portion 32 of the lower conveying section 30, and the upper conveying section 29 in the second conveying device 9) As shown in Figures 4, 5 and 6, in the first portion 31 of the lower conveying section 30, the frames 45, 46, the vertical frames 47, 48, the frames 51, 52, 53, the vertical frames 54, 55 and the horizontal frame 57 are square pipe frames, angle frames and channel frames.

[0146] In the second portion 32 of the lower conveying section 30 and the upper conveying section 29, the frames 61, 62, 63 and the vertical frame 64, the frames 71, 72, 73 and the vertical frame 74, and the horizontal frames 66, 76 are round pipe frames, square pipe frames, angle frames, and channel frames.

[0147] The thicknesses of the frames 61 to lateral frames 76 of the second part 32 of the lower conveying section 30 and the upper conveying section 29 are set to be smaller than the smallest thickness of the frame 45 to lateral frame 57 of the first part 31 of the lower conveying section 30.

[0148] (Crop transport structure in the second transport device 9)-1 As shown in FIGS. 5 and 10, the lower ends of the horizontal portions 33 to 36 are located above the bottom portions 49, 50, 56, 65, and 75, and are bent outward laterally.

[0149] Right and left chain guides 89 are formed between the lower ends of the horizontal sections 33 to 36 and the frames 45, 52, 62, and 72. The chain guides 89 are channel-shaped spaces that extend laterally outward from the horizontal sections 33 to 36, and are formed in the horizontal sections 33 to 36 so as to extend along the upper side of the bottom sections 49, 50, 56, 65, and 75, spanning from the starting end (see FIG. 4) of the lower conveying section 30 (the lower portion 31a of the first section 31) to the terminal end (see FIG. 6) of the upper conveying section 29.

[0150] Right and left angled chain guides 90 are connected to the frames 46, 53, 63, and 73. The chain guides 90 are provided along the underside of the bottoms 49, 50, 56, 65, and 75, spanning from the starting end (see FIG. 4) of the lower conveying section 30 (the lower portion 31a of the first section 31) to the terminal end (see FIG. 6) of the upper conveying section 29.

[0151] A slide plate 94 is attached to the chain guide 89 (the lower ends of the horizontal portions 33 to 36 and the frames 45, 52, 62, 72) and the chain guide 90 with a square root bolt 95 and a nut 96.

[0152] The square root bolt 95 has a dish-shaped (conical) head 95a, a threaded portion 95b, and a rotation prevention portion 95c. The rotation prevention portion 95c is formed in a square shape and is provided at the connection portion between the head 95a and the threaded portion 95b.

[0153] A dish-shaped (conical) opening is formed in the slide plate 94. The head 95a and anti-rotation portion 95c of the square root bolt 95 are inserted into the opening of the slide plate 94, and a nut 96 is attached to and tightened with the threaded portion 95b of the square root bolt 95. The anti-rotation portion 95c of the square root bolt 95 bites into the opening of the slide plate 94, thereby preventing the square root bolt 95 from rotating and allowing the nut 96 to be tightened smoothly, with the slide plate 94 and the head 95a of the square root bolt 95 being flush with each other.

[0154] (Crop transport structure in the second transport device 9)-2 11 and 12, right and left driven wheels 97 are rotatably mounted at the starting end of the lower conveying section 30 (the lower part 31a of the first section 31). A support plate 99 is attached across the right and left frames 72, 73 at the terminal end of the upper conveying section 29. Right and left drive wheels 98 are rotatably mounted on the support plate 99, and a hydraulic motor 100 that drives the drive wheels 98 is attached to the support plate 99.

[0155] 5, 10, 11, and 12, right and left conveyor chains 101 are attached across the driven wheels 97 and the driving wheels 98. The conveying portion (upper portion) of the conveyor chain 101 is disposed on the chain guide 89 (slide plate 94), and the returning portion (lower portion) of the conveyor chain 101 is disposed on the chain guide 90 (slide plate 94). A large number of conveyor bodies 102, each rectangular in front view, are attached across the right and left conveyor chains 101 and are arranged at predetermined intervals along the movement direction of the conveyor chain 101.

[0156] The chain guide 89, slide plate 94, and conveying chain 101 do not protrude from the inner wall surfaces (bottoms 49, 50, 56, 65, 75 side) of the horizontal portions 33 to 36 toward the inner side (bottoms 49, 50, 56, 65, 75 side) of the second conveying device 9 (see Figures 5 and 10).

[0157] As the drive wheel 98 is rotated by the hydraulic motor 100, the conveying chain 101 and the conveying body 102 move above the bottoms 49, 50, 56, 65, 75 from the starting end of the lower conveying section 30 (the lower part 31a of the first part 31) to the terminal end of the upper conveying section 29, while being guided by the chain guide 89.

[0158] As mentioned above, the crops that fall into the storage section 8 are transported by the conveying chain 101 and the conveying body 102 along the bottoms 49, 50, 56, 65, 75 toward the end of the upper conveying section 29, and fall downward from the position of the drive wheels 98 and support plate 99, and are supplied to the loading platform of the transport vehicle accompanying the sugarcane harvester.

[0159] After passing through the drive wheel 98, the conveying chain 101 and conveying body 102 are guided by the chain guide 90 and move below the bottoms 49, 50, 56, 65, and 75 from the end of the upper conveying section 29 to the beginning of the lower conveying section 30 (the lower part 31a of the first part 31).

[0160] (Configuration of bottom portions 49, 50, 56, 65, 75 in second conveying device 9) 11 and 12, the bottom portions 49, 50, 56, 65, and 75 are formed in a flat plate shape. Two bottom portions 49, 50, 65, and 75 are provided, and four bottom portions 56 are provided. The bottom portions 49, 50, 56, 65, and 75 are divided into multiple portions in the width direction (width direction of the second conveying device 9) across one and the other horizontal portions 33 to 36.

[0161] Stud bolts 104 are attached to the underside of one end and the other end and the middle part of the bottom parts 56, 65, 75 and protrude downward. Mud removal openings 106 are opened in parts of the bottom parts 56, 65, 75 where no stud bolts 104 are provided. The mud removal openings 106 are elongated holes that run along the direction of movement of the conveyor chain 101 and the conveyor body 102 (the longitudinal direction of the bottom parts 56, 65, 75).

[0162] The bottom 75 has portions 75a, 75b near one and the other ends where the mud removal openings 106 are not opened. The portion 75a of the bottom 75 is located at the connecting portion (see FIG. 6) between the lower conveying section 30 (second portion 32) and the upper conveying section 29, and is located at a portion where the angle with respect to the horizontal plane (ground) changes, so the mud removal openings 106 are not opened in the portion 75a of the bottom 75. The portion 75b of the bottom 75 is located on the support plate 99, so the mud removal openings 106 are not opened in the portion 75b of the bottom 75.

[0163] Stud bolts 104 are attached to the undersides of one and the other ends of the bottom portions 49, 50 and protrude downward. Because the bottom portion 49 is located below the sorting device 7 (see Figures 2 and 3), the mud removal opening 106 is not opened in the bottom portion 49.

[0164] The bottom 50 is located at the connection between the lower part 31a and the upper part 31b of the lower conveying section 30 (first part 31) (see Figures 2 and 3), and is located at the part where the angle with respect to the horizontal plane (ground) changes, so the mud removal opening 106 is not opened in the bottom 50.

[0165] As mentioned above, when the crops that have fallen into the storage section 8 are transported along the bottoms 49, 50, 56, 65, and 75 by the conveying chain 101 and the conveying body 102, the mud adhering to the crops tends to fall downward through the mud removal openings 106 in the bottoms 56, 65, and 75.

[0166] (Mounting structure of bottom portions 49, 50, 56, 65, 75 in second conveying device 9) 11 and 12, in the second conveying device 9 (the lower conveying section 30 and the upper conveying section 29), the support frames 37, 38, 40, and 60 are connected across the right and left frames 45, 52, 62, and 72. The support frames 37, 38, 40, and 60 are provided along a direction perpendicular to the movement direction of the conveying body 102 (the longitudinal direction of the second conveying device 9).

[0167] A support frame 39 divided into a plurality of pieces is connected to the left and right central portions of the support frames 37, 38, 40, and 60 along the movement direction of the conveying body 102 (the longitudinal direction of the second conveying device 9).

[0168] 13, openings 103 are formed in the support frames 37, 38, 40, the frames 45, 52, 62, 72, and the support plate 99. The openings 103 are elongated holes extending in the movement direction of the conveyor 102 (the longitudinal direction of the second conveyor device 9). In this case, the support frames 37, 38, and 39 correspond to the support portion, and the opening 103, the stud bolt 104, and the nut 105 correspond to the fixing portion.

[0169] (Mounting structure of bottom portions 49, 50 in second conveying device 9) 11, 13, 14, and 15, in the lower portion 31a (see FIG. 4) of the lower conveying section 30 (first portion 31), two bottom portions 49 are arranged side by side along the width direction of the lower conveying section 30, and two bottom portions 50 are arranged side by side along the width direction of the lower conveying section 30. The bottom portions 49, 50 are arranged side by side along the movement direction of the conveying body 102 (the longitudinal direction of the second conveying device 9).

[0170] The bottom portions 49 and 50 are placed on the support frames 37, 38, 39 and the frame 46 and are supported from below by the support frames 37, 38, 39 and the frame 46. Both ends of the bottom portions 49 adjacent to each other in the width direction of the lower conveying section 30 are supported by the support frames 39. Both ends of the bottom portions 50 adjacent to each other in the width direction of the lower conveying section 30 are supported by the support frames 39.

[0171] Stud bolts 104 on the bottoms 49, 50 are inserted into openings 103 in the support frames 37, 38, 39 and frame 46, and nuts 105 are attached to the stud bolts 104 on the bottoms 49, 50 and tightened.

[0172] Both the ends of the bottom 49 and the bottom 50, which are adjacent in the movement direction of the conveying body 102 (longitudinal direction of the second conveying device 9), are supported by the support frame 38, and the stud bolts 104 of the bottom 49 and the stud bolts 104 of the bottom 50 are inserted into one opening 103.

[0173] (Mounting structure of bottom portion 56 in second conveying device 9) As shown in Figures 11, 13, 14, and 15, in the upper part 31b (see Figure 4) of the lower conveying section 30 (first part 31), two bottoms 56 are arranged side by side along the width direction of the lower conveying section 30, and two bottoms 56 are arranged side by side along the movement direction of the conveying body 102 (the longitudinal direction of the second conveying device 9).

[0174] The bottom portion 56 is placed on the support frames 37, 38, 39, 40 and the frame 52, and is supported from below by the support frames 37, 38, 39, 40 and the frame 52. Both ends of the bottom portion 56 that are adjacent in the width direction of the lower conveying section 30 are supported by the support frame 39.

[0175] Stud bolts 104 on the bottom 56 are inserted into openings 103 in the support frames 37, 38, 39, 40 and frame 52, and nuts 105 are attached to the stud bolts 104 on the bottom 56 and tightened.

[0176] Both ends of adjacent bottom portions 56 in the movement direction of the conveying body 102 (longitudinal direction of the second conveying device 9) are supported by the support frame 38, and two stud bolts 104 of adjacent bottom portions 56 are inserted into one opening 103.

[0177] Of the four bottom portions 56, the upper two bottom portions 56 extend into the second portion 32 of the lower conveying section 30. The upper two bottom portions 56 are placed on the support frames 38, 39, 60 and frame 62 in the second portion 32 of the lower conveying section 30, and are supported from below by the support frames 38, 39, 60 and frame 62.

[0178] The two upper stud bolts 104 of the bottom 56 are inserted into openings 103 in the support frame 38 and frame 62 of the second part 32 of the lower conveying section 30, and nuts 105 are attached to the stud bolts 104 of the bottom 56 and tightened.

[0179] (Mounting structure of bottom portion 65 in second conveying device 9) As shown in FIGS. 12 to 15, in the second portion 32 of the lower conveying section 30, two bottom portions 65 are provided side by side along the width direction of the lower conveying section 30.

[0180] The bottom portion 65 is placed on the support frames 37, 38, 39 and the frame 62, and is supported from below by the support frames 37, 38, 39 and the frame 62. Both ends of the bottom portion 65 that are adjacent in the width direction of the lower conveying section 30 are supported by the support frame 39.

[0181] Stud bolts 104 on the bottom 65 are inserted into openings 103 in the support frames 37, 38, 39 and frame 62, and nuts 105 are attached to the stud bolts 104 on the bottom 65 and tightened.

[0182] As described above, the two bottoms 56 on the upper side of the upper part 31b of the lower conveying section 30 (first part 31) extend to the second part 32 of the lower conveying section 30, and the bottoms 56, 65 are arranged side by side along the movement direction of the conveying body 102 (the longitudinal direction of the second conveying device 9). Both ends of adjacent bottoms 56, 65 in the movement direction of the conveying body 102 (longitudinal direction of the second conveying device 9) are supported by the support frame 38, and two stud bolts 104 of adjacent bottoms 56, 65 are inserted into one opening 103.

[0183] (Mounting structure of bottom portion 75 in second conveying device 9) As shown in FIGS. 12 to 15, the upper conveying section 29 has two bottoms 75 arranged side by side along the width direction of the upper conveying section 29.

[0184] The bottom portion 75 is placed on the support frames 37, 38, and 39, the frame 72, and the support plate 99, and is supported from below by the support frames 37, 38, and 39, the frame 72, and the support plate 99. Both ends of the bottom portion 75 that are adjacent in the width direction of the upper conveying section 29 are supported by the support frame 39.

[0185] Stud bolts 104 in the bottom 75 are inserted into openings 103 in the support frames 37, 38, 39 and frame 62 and support plate 99, and nuts 105 are attached to the stud bolts 104 in the bottom 75 and tightened.

[0186] The bottoms 65 and 75 of the lower conveying section 30 (second portion 32) are arranged side by side along the movement direction of the conveying body 102 (the longitudinal direction of the second conveying device 9). Both ends of adjacent bottoms 65, 75 in the movement direction of the conveying body 102 (longitudinal direction of the second conveying device 9) are supported by the support frame 38, and two stud bolts 104 of adjacent bottoms 65, 75 are inserted into one opening 103.

[0187] (Removal of bottom parts 49, 50, 56, 65, 75 in second conveying device 9) The operation of removing the bottom parts 49, 50, 56, 65, 75 by an operator from the state shown in FIGS. 11 to 15 will be described below with reference to the bottom part 56.

[0188] The worker removes the conveying body 102 (see FIG. 5) located above the bottom portion 56 to be removed from the conveying chain 101, and removes the nuts 105 from the stud bolts 104 on the bottom portion 56. The worker lifts the bottom portion 56 slightly and pulls the stud bolts 104 on the bottom portion 56 upward through the openings 103 in the support frames 37, 38, 39 and frame 52.

[0189] The chain guide 89, slide plate 94, and conveyor chain 101 do not protrude from the inner wall surface (bottom 56 side) of the horizontal section 33 toward the inner side (bottom 56 side) of the lower conveyor section 30 (see Figures 5 and 10). As a result, when an operator lifts the bottom section 56, the end of the bottom section 56 is less likely to rub against the chain guide 89, slide plate 94, and conveyor chain 101.

[0190] The worker moves the bottom portion 56 toward the center of the left and right of the lower conveying section 30, and lifts it upward to remove it away from the side portions 34. By moving the bottom portion 56 away from the side portions 34, the end portion of the bottom portion 56 is less likely to rub against the side portions 33 when the worker lifts the bottom portion 56 upward to remove it. To install the bottom 56, the operator simply performs the above steps in reverse order. The removal and installation of the bottoms 49, 50, 65, and 75 are similar to those described above.

[0191] When the vertical distance between the conveying body 102 and the bottom portions 49, 50, 56, 65, and 75 is set to a large value, the worker can remove the stud bolts 104 of the bottom portions 49, 50, 56, 65, and 75 upward through the openings 103 by lifting the bottom portions 49, 50, 56, 65, and 75 until they come into contact with the conveying body 102. This allows the worker to remove and install the bottom portions 49, 50, 56, 65, and 75 without removing the conveying body 102 from the conveying chain 1010.

[0192] (First Alternative Embodiment of the Invention) The bottom portions 49, 50, 56, 65, 75 may be divided into three or four portions in the width direction across the one and other horizontal portions 33 to . The number of divisions of the bottom portions 49, 50, 56, 65, and 75 may be set to be different from each other.

[0193] (Second Alternative Embodiment of the Invention) The mud removal openings 106 may be opened in the portion 75a of the bottom 75 in a number less than the number of mud removal openings 106 in the portions of the bottoms 56, 65, 75 where the mud removal openings 106 are opened.

[0194] The mud removal openings 106 may be opened in the bottom portions 49, 50 in a number less than the number of mud removal openings 106 in the portions of the bottom portions 56, 65, 75 where the mud removal openings 106 are opened.

[0195] (Third Alternative Embodiment of the Invention) In the second conveying device 9, some of the plate thicknesses of the second part 32 of the lower conveying section 30 and the frame 61 to the horizontal frame 76 of the upper conveying section 29 may be set to be smaller than the plate thickness of the frame 45 to the horizontal frame 57 of the first part 31 of the lower conveying section 30.

[0196] (Fourth Alternative Embodiment of the Invention) In the second conveying device 9, the thickness of the second portion 32 of the lower conveying section 30 and the bottoms 65, 75 of the upper conveying section 29 may be set to be smaller than the thickness of the bottoms 49, 50, 56 of the first portion 31 of the lower conveying section 30. In this case, one of the thicknesses of the second portion 32 of the lower conveying section 30 and the bottom portions 65, 75 of the upper conveying section 29 may be set to be smaller than the thickness of the bottom portions 49, 50, 56 of the first portion 31 of the lower conveying section 30.

[0197] (Fifth Alternative Embodiment of the Invention) In the second conveying device 9, the plate thickness of the second portion 32 of the lower conveying section 30 and the horizontal portions 35, 36 of the upper conveying section 29 may be set to be smaller than the plate thickness of the horizontal portions 33, 33 of the first portion 31 of the lower conveying section 30. In this case, one of the plate thicknesses of the second portion 32 of the lower conveying section 30 and the horizontal portions 35, 36 of the upper conveying section 29 may be set to be smaller than the plate thickness of the horizontal portions 33, 33 of the first portion 31 of the lower conveying section 30.

[0198] (Sixth Alternative Embodiment of the Invention) The chain guide 89 may be provided at the vertical intermediate portion of the horizontal portions 33-36 (first side walls 41, 43) instead of being formed between the lower end portions of the right and left horizontal portions 33-36 and the right and left frames 46, 52, 62, 72.

[0199] (Seventh Alternative Embodiment of the Invention) The spill prevention portion 27 may be made of a metal plate or a synthetic resin plate that is difficult to deform elastically, instead of a rubber plate that is elastically deformable.

[0200] According to the above-mentioned configuration, the spill prevention part 27 is attached to the storage part 8 (second conveying device 9) so as to be slidable in the vertical direction, and a spring (not shown) may be provided to bias the spill prevention part 27 to its original position. Alternatively, the lower part of the spill prevention part 27 may be attached to the storage part 8 (second conveying device 9) so as to be swingable in the left-right direction, and a spring (not shown) may be provided to bias the spill prevention part 27 to its original position.

[0201] As a result, when the spill prevention part 27 comes into contact with the sorting device 7 (main body part 10), the spill prevention part 27 slides or swings relative to the storage part 8 (second conveying device 9), thereby absorbing the contact between the spill prevention part 27 and the sorting device 7 (main body part 10). When the spill prevention part 27 moves away from the sorting device 7 (main body part 10), the spill prevention part 27 returns to its original position by the spring.

[0202] (Correspondence to claims)-1 A reaping unit 3 is provided to reap crops in the field. The machine is provided with a first conveying device 4 that conveys the crops cut by the cutting section 3 diagonally upward and rearward. A sorting device 7 is provided at the end of the first conveying device 4, and separates and discharges impurities from the crops dropping from the end of the first conveying device 4 using sorting air. A storage section 8 is provided below the sorting device 7 and is capable of receiving and storing the crops that fall from the sorting device 7. A second conveying device 9 is provided which extends obliquely upward from the storage section 8 and conveys the crops in the storage section 8 obliquely upward and discharges them from the terminal end.

[0203] The second conveying device 9 has one and other horizontal portions 33-36 arranged facing each other at a predetermined distance, bottom portions 49, 50, 56, 65, 75 arranged across the lower parts of the one and other horizontal portions 33-36, and a conveying body 102 that is driven to move above the bottom portions 49, 50, 56, 65, 75 along the horizontal portions 33-36 toward the terminal end of the second conveying device 9 to convey the crops. The bottom portions 49, 50, 56, 65, 75 are divided into a plurality of portions in the width direction across the one and other horizontal portions 33 to .

[0204] (Correspondence to claims)-2 With the above configuration, the bottoms 49, 50, 56, 65, 75 are provided with support portions (support frames 37, 38, 39, 40, 60) that support the bottoms 49, 50, 56, 65, 75 from below.

[0205] The support portion (support frame 39) is provided along the movement direction of the conveying body 102 so as to be along both ends of the adjacent bottom portions 49, 50, 56, 65, 75, and supports both ends of the bottom portions 49, 50, 56, 65, 75.

[0206] The support parts (support frames 37, 38, 40) are provided along a direction perpendicular to the direction of movement of the conveyance body 102. Fixing parts (stud bolts 104 and nuts 105) are provided to fix the bottom parts 49, 50, 56, 65, 75 placed on the support parts (support frames 37, 38, 40) to the support parts (support frames 37, 38, 40).

[0207] The fixing portion has a stud bolt 104 attached to the underside of the bottom portion 49, 50, 56, 65, 75 and protruding downward, an opening 103 opened in the support portion (support frame 37, 38, 40) and into which the stud bolt 104 is inserted, and a nut 105 attached to the stud bolt 104 and tightened. The opening 103 is a long hole extending along the direction of movement of the carrier 1102 .

[0208] (Correspondence to claims)-3 With the above-described configuration, the chain guides 89 are provided along the bottom portions 49, 50, 56, 65, 75 in the portions of both horizontal portions 33 to 36 above the bottom portions 49, 50, 56, 65, 75. A conveying chain 101 is supported and guided by the chain guide 89 and driven along the chain guide 89 toward the terminal end of the second conveying device 9 . A conveying body 102 is attached across the conveying chains 101 of one horizontal portion 33-36 and the conveying chains 101 of the other horizontal portion 33-36, and is driven by the conveying chains 101 to move toward the terminal end of the second conveying device 9.

[0209] The conveying chain 101 and the chain guide 89 are provided on the horizontal portions 33 to 36 so as not to protrude from the wall surface of the horizontal portions 33 to 36 on the side of the bottom portions 49, 50, 56, 65, 75 toward the bottom portions 49, 50, 56, 65, 75.

[0210] (Correspondence to claims)-4 With the above configuration, the second conveying device 9 has a lower conveying section 30 extending obliquely upward from the storage section 8, and an upper conveying section 29 extending obliquely upward from the upper end of the lower conveying section 30. The orientation of the upper conveying section 29 relative to the lower conveying section is set so that the angle of the upper conveying section 29 relative to the horizontal plane is smaller than the angle of the lower conveying section 30 relative to the horizontal plane.

[0211] A plurality of mud drain openings 106 are provided in the bottoms 56, 65, 75 for allowing mud to fall downward. The number of mud removal openings 106 provided at the connection portion (portion 75a) between the lower conveying section 30 and the upper conveying section 29 at the bottom 75 is set to be less than the number of mud removal openings 106 provided at the bottoms 56, 65, 75 in portions other than the connection portion between the lower conveying section 30 and the upper conveying section 29, or to be zero.

[0212] The horizontal portion 35 of the lower conveying section 30 and the horizontal portion 36 of the upper conveying section 29 are connected to each other by frames 67 and 73 that are linear in side view. The lower conveying section 30 is divided at an intermediate portion between the starting end and the ending end of the lower conveying section 30 into a first portion 31 from the intermediate portion toward the starting end of the lower conveying section 30, and a second portion 32 from the intermediate portion toward the ending end of the lower conveying section 30, and the first portion 31 and the second portion 32 are connected to form the lower conveying section 30.

[0213] The second section 32 and the upper conveying section 29 have portions with a thinner plate thickness than the first section 31. A plurality of pipe frames (frames 45 to 57, frames 61 to 76) are provided which are connected to the horizontal sections 33, 35 of the lower conveying section 30 and the horizontal section 36 of the upper conveying section 29. Some of the pipe frames (frames 61 to 76) of the second section 32 and the upper conveying section 29 have a thinner plate thickness than the pipe frames (frames 45 to 57) of the first section 31.

[0214] A connecting member 84 is provided that connects the horizontal portion 34 of the first portion 31 and the horizontal portion 35 of the second portion 32 in a portion above the bottom portions 56, 65 in a side view. The divided portion between the first section 31 and the second section 32 has a first divided portion (first flanges 81, 91) formed along a direction perpendicular to the bottoms 56, 65 in a side view. In a side view, the divided portion has a second divided portion (second flanges 82, 92) provided in a portion of the upper part of the horizontal portions 34, 35 closer to the starting end of the lower conveying section 30 than the first divided portion (first flanges 81, 91), and along a direction perpendicular to the bottoms 56, 65. The divided portion has a third divided portion (third flanges 83, 93) connected across the upper end of the first divided portion (first flanges 81, 91) and the lower end of the second divided portion (second flanges 82, 92). [Industrial Applicability]

[0215] The present invention is applicable to sugarcane harvesters. [Explanation of symbols]

[0216] 3 Reaping section 4. First conveying device 7. Sorting equipment 8. Storage section 9 Second conveying device 29 Upper conveying section 30 Lower conveying section 31 Part 1 32 Part 2 33 Horizontal 34 Horizontal section 35 Horizontal 36 Horizontal section 37 Support frame (support part) 38 Support frame (support part) 39 Support frame (support part) 40 Support frame (support part) 49 Bottom 50 bottom 56 Bottom 60 Support frame (support part) 65 Bottom 67 frames 73 frames 75 Bottom 81 1st division part 82 Second division part 83 Third division part 84 Connecting member 89 Chain Guide 91 1st division part 92 Second division part 93 Third division part 101 Conveyor chain 102 Carrier 103 Opening (fixed part) 104 Stud bolt (fixed part) 105 Nut (fixed part) 106 Mud removal opening

Claims

1. a reaping unit that reaps crops in the field; a first conveying device that conveys the crops cut by the cutting unit diagonally upward and rearward; a sorting device provided at a terminal end of the first conveying device, which separates and discharges impurities from the crops dropping from the terminal end of the first conveying device by using sorting air; a storage section provided below the sorting device and capable of receiving and storing crops that fall from the sorting device; a second conveying device extending obliquely upward from the storage section, conveying the crops in the storage section obliquely upward and discharging them from a terminal end, the second conveying device has one and the other side portions that are arranged to face each other with a predetermined gap therebetween, a bottom portion that is arranged across the lower parts of the one and the other side portions, and a conveying body that is driven to move above the bottom portion along the side portions toward the terminal end of the second conveying device to convey the crops; A sugarcane harvester in which the bottom portion is divided into multiple portions in a width direction spanning one and the other of the horizontal portions.

2. 2. The sugarcane harvester according to claim 1, further comprising a support portion for supporting the bottom portion from below.

3. The sugarcane harvester according to claim 2 , wherein the support portions are provided along the direction of movement of the transport body so as to be along both ends of the adjacent bottom portions and support both ends of the bottom portions.

4. the support portion is provided along a direction perpendicular to the moving direction of the conveying body, 3. The sugarcane harvester according to claim 2, further comprising a fixing portion for fixing the bottom portion placed on the support portion to the support portion.

5. 5. The sugarcane harvester according to claim 4, wherein the fixing portion includes a stud bolt attached to the underside of the bottom portion and protruding downward, an opening formed in the support portion and into which the stud bolt is inserted, and a nut attached to and tightened around the stud bolt.

6. The sugarcane harvester according to claim 5, wherein the opening is a slot extending along the direction of movement of the carrier.

7. a chain guide provided along the bottom portion at a portion of each of the lateral portions above the bottom portion; a conveying chain supported and guided by the chain guide and driven along the chain guide toward the terminal end of the second conveying device; the conveying body is attached across the conveying chain of one of the horizontal sections and the conveying chain of the other horizontal section, and is driven to move by the conveying chain toward the terminal end of the second conveying device, 2. The sugarcane harvester according to claim 1, wherein the conveying chain and the chain guide are provided on the lateral portion so as not to protrude from a wall surface of the lateral portion on the side of the bottom portion toward the bottom portion.

8. 2. The sugarcane harvester according to claim 1, wherein the bottom is provided with a plurality of mud removal openings for dropping mud downward.

9. The second transport device has a lower transport section extending obliquely upward from the storage section and an upper transport section extending obliquely upward from an upper end of the lower transport section, and the attitude of the upper transport section relative to the lower transport section is set so that the angle of the upper transport section relative to the horizontal plane is smaller than the angle of the lower transport section relative to the horizontal plane, A sugarcane harvester as described in claim 8, wherein the number of mud removal openings provided at the connection portion between the lower conveying section and the upper conveying section at the bottom is set to a number less than the number of mud removal openings provided at the part of the bottom other than the connection portion between the lower conveying section and the upper conveying section, or to zero.

10. The second transport device has a lower transport section extending obliquely upward from the storage section and an upper transport section extending obliquely upward from an upper end of the lower transport section, and the attitude of the upper transport section relative to the lower transport section is set so that the angle of the upper transport section relative to the horizontal plane is smaller than the angle of the lower transport section relative to the horizontal plane, The sugarcane harvester according to claim 1, further comprising a frame that is linear in side view and connects the horizontal portion of the lower conveying section and the horizontal portion of the upper conveying section.

11. The second transport device has a lower transport section extending obliquely upward from the storage section and an upper transport section extending obliquely upward from an upper end of the lower transport section, and the attitude of the upper transport section relative to the lower transport section is set so that the angle of the upper transport section relative to the horizontal plane is smaller than the angle of the lower transport section relative to the horizontal plane, 2. The sugarcane harvester of claim 1, wherein the lower conveying section is divided at an intermediate portion between the starting end and the terminal end of the lower conveying section into a first portion from the intermediate portion to the starting end side of the lower conveying section, and a second portion from the intermediate portion to the terminal end side of the lower conveying section, and the first portion and the second portion are connected to form the lower conveying section.

12. The sugarcane harvester according to claim 11, wherein the second section and the upper conveying section have portions with a thickness smaller than that of the first section.

13. a plurality of pipe frames connected to the horizontal portion of the lower conveying section and the horizontal portion of the upper conveying section; The sugarcane harvester according to claim 12, wherein some of the pipe frames of the second section and the upper conveying section have a thickness smaller than that of the pipe frames of the first section.

14. The sugarcane harvester according to claim 11, further comprising a connecting member that connects the lateral portion of the first section and the lateral portion of the second section at a portion above the bottom portion in a side view.

15. 12. The sugarcane harvester according to claim 11, wherein the dividing portion between the first portion and the second portion comprises: a first dividing portion formed along a direction perpendicular to the bottom in a side view; a second dividing portion formed along a direction perpendicular to the bottom in a side view at a portion of the upper part of the horizontal portion closer to the starting end of the lower conveying section than the first dividing portion; and a third dividing portion connected across an upper end of the first dividing portion and a lower end of the second dividing portion.

Images