Sugarcane harvester

Abstract

The present invention provides a sugarcane harvester that reduces damage to the rotating body that rotates around the lateral axis of rotation, among the rotating bodies that move while rotating along the circumferential direction of the cylindrical part of the separation device as the conveyor belt rotates. [Solution] The machine is equipped with a mobile machine body, a separation device that separates harvested crops into impurities and harvested material, and a conveyor that receives the harvested material from the separation device and transports it diagonally upward to discharge it outside the machine. The separation device has a cylindrical part 46 formed in a cylindrical shape with a pivot axis as its center, and the support mechanism has a rotating body 62 that moves while rotating along the circumferential direction of the cylindrical part as the conveyor rotates, and the rotating body 62 is configured to be rotatable about a lateral rotation axis Y3 that extends along the radial direction of the cylindrical part 46, and the part of the rotating body 62 on the pivot axis side has a small diameter part 63 that is configured to be smaller in the radial direction than the other parts of the rotating body 62.

Description

Technical Field

[0001] The present invention relates to a sugarcane harvester comprising a conveying conveyor that receives harvested crops, conveys them obliquely upward, and discharges them outside the machine.

Background Art

[0002] As a conventional sugarcane harvester, as disclosed in Patent Document 1, there is one that includes a conveying conveyor (referred to as "conveyor" in the document) that receives harvested crops from a separating device, conveys them obliquely upward, and conveys them outside the machine.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a sugarcane harvester, since the transport vehicle supplied with harvested crops from the conveying conveyor may travel on the right side or the left side of the sugarcane harvester, the conveying conveyor is configured to be rotatable in the right and left directions. Further, such a conveying conveyor is wound along the outer peripheral portion of a cylindrical portion formed in a cylindrical shape of the separating device, and is configured to be rotatably supported by the separating device by a cord-like body (chain) having a plurality of rotating bodies (referred to as "first roller" and "second roller" in the document).

[0005] The rotating body provided on the cord-like body moves while rotating along the circumferential direction of the cylindrical portion of the separating device as the conveying conveyor rotates. And among the plurality of rotating bodies, the rotating body configured to be rotatable about a horizontal rotation axis extending along the radial direction of the cylindrical portion of the separating device moves while rolling on a horizontal portion formed along the outer periphery of the cylindrical portion of the separating device.

[0006] Such a rotating body rolls around the outer circumference of the cylindrical part of the separation device, with the pivot axis of the conveyor belt as its axis. As a result, the trajectory traced by the pivot axis side of the rotating body is shorter than the trajectory traced by the other parts of the rotating body. In other words, if the rotating body rotates in accordance with the ground speed of the other parts of the rotating body, the moving speed and rotational speed do not match. This can cause the pivot axis side of the rotating body to wear down or otherwise break, indicating that there was room for improvement.

[0007] Therefore, the object of the present invention is to provide a sugarcane harvester that can reduce damage to the rotating body that rotates around the horizontal rotation axis, among the rotating bodies that move while rotating along the circumferential direction of the cylindrical part of the separation device as the conveyor belt rotates. [Means for solving the problem]

[0008] The sugarcane harvester of the present invention comprises a mobile vehicle, a separation device for separating harvested crops into impurities and harvested material, a conveyor extending diagonally upward from below the separation device, connected to the mobile vehicle in a manner that allows it to rotate around a vertical pivot axis with its lower end as a fulcrum, receiving the harvested material from the separation device and transporting it diagonally upward to discharge it outside the machine, and a support provided across the separation device and the conveyor, supporting the portion of the conveyor above its lower end, The separation device is provided with a support mechanism configured to be rotatable relative to the separation device, the separation device having a cylindrical portion formed in a cylindrical shape centered on the pivot axis, the support mechanism having a rotating body that moves while rotating along the circumferential direction of the cylindrical portion as the conveyor rotates, the rotating body being configured to be rotatable about a lateral rotation axis extending along the radial direction of the cylindrical portion, and the portion of the rotating body on the pivot axis side having a small diameter portion which is radially smaller than the other portion of the rotating body.

[0009] According to this invention, the rotating body has a small-diameter portion on the pivot axis side that is radially smaller than the rest of the rotating body. As the conveyor belt rotates and the rotating body moves along the circumferential direction of the cylindrical part, the small-diameter portion does not come into contact with the ground while rotating. As a result, even if the rotating body rotates at the same ground speed as the rest of the rotating body, the small-diameter portion does not come into contact with the ground. This reduces wear on the pivot axis side of the rotating body and reduces damage to the rotating body.

[0010] In the present invention, it is preferable that the small-diameter portion of the rotating body has an inclined surface that slopes linearly or curvilinearly toward the horizontal rotation axis as it moves inward toward the cylindrical portion.

[0011] This configuration makes it possible to create a rotating body with a small diameter portion by simply performing a task during manufacturing: creating an inclination on the pivot axis side of the existing rotating body.

[0012] In the present invention, it is preferable that the rotating body is provided in multiple units.

[0013] This configuration distributes the load caused by supporting the conveyor belt across multiple rotating bodies, thereby reducing the load on each individual rotating body.

[0014] In the present invention, it is preferable that at least one of the plurality of rotating bodies is located in front of the pivot axis.

[0015] In this configuration, the conveyor belt, which is often located at the rear end of the traveling machine, is supported by a rotating body located in front of the pivot axis, that is, in front of the separation device. The rotating body, located in front of the pivot axis, is positioned on the opposite side of the separation device from the conveyor belt, meaning it is positioned at a location where the load caused by supporting the conveyor belt is high. By positioning the rotating body in this way, it becomes possible to provide a configuration that more firmly supports the conveyor belt.

[0016] In the present invention, it is preferable that five of the rotating bodies are provided.

[0017] According to this configuration, since the load caused by the support of the conveyor is distributed among the five rotating bodies, it is possible to reduce the load on each rotating body.

[0018] In the present invention, it is preferable that the support mechanism has two flanges extending along the circumferential direction of the cylindrical portion and arranged side by side in the vertical direction, and the rotating body is arranged between the two flanges.

[0019] According to this configuration, the rotating body is configured to move while rolling between the two flanges, and it is possible to avoid inconveniences such as the rotating body coming off the wheels.

[0020] In the present invention, it is preferable that the support mechanism is configured to be rotatable about a vertical rotation axis extending along the swivel axis direction, and has a sub-rotating body that moves while rotating the outer peripheral surface of the cylindrical portion as the conveyor swivels.

[0021] According to this configuration, the conveyor is supported by a rotating body having a rotation axis in the radial direction of the cylindrical portion and a sub-rotating body having a rotation axis along the swivel axis direction, and is thus supported more preferably.

[0022] In the present invention, it is preferable that the rotating body is arranged at a location on the outer periphery of the cylindrical portion where the sub-rotating body is not arranged.

[0023] According to this configuration, two types of rotating bodies with different axial directions are not present at the same location, and it is possible to avoid the configuration of the support mechanism becoming complicated.

Brief Description of the Drawings

[0024] [Figure 1] It is a side view of a sugarcane harvester. [Figure 2] It is a plan view of a sugarcane harvester. [Figure 3] It is a side view showing the configurations of the conveying device and the separating device. [Figure 4] It is a cross-sectional view showing the configurations of the conveying device and the separating device. [Figure 5] It is a plan view showing the configuration of the upper support mechanism. [Figure 6] It is a plan view showing the configurations of the conveyor support frame body and the swivel frame body. [Figure 7] It is a plan view showing the configurations of the conveyor support frame body and the swivel frame body. [Figure 8] It is a plan view showing the configuration of the vertical rotating roller. [Figure 9] It is a cross-sectional view taken along line IX in FIG. 8.

Embodiments for Carrying out the Invention

[0025] The embodiments for carrying out the present invention will be described based on the drawings. In the following description, unless otherwise specified, the direction of arrow F in the figures is taken as "front", the direction of arrow B as "rear", the direction of arrow L as "left", and the direction of arrow R as "right". Also, the direction of arrow U in the figures is taken as "up" and the direction of arrow D as "down".

[0026] 〔Overall Configuration of Sugarcane Harvester〕 As shown in FIG. 1, the sugarcane harvester includes a traveling body, and left and right front wheels 1 provided on the traveling body that can be steered and left and right rear wheels 2 that cannot be steered and are rotationally driven. The traveling body can travel by driving the rear wheels 2.

[0027] As shown in FIGS. 1 and 2, the traveling body is provided with an operation unit 3, a cutting unit 4, a topping unit 5, a conveying device 6, a separating device 7, a conveying conveyor 8, an engine 9, and the like.

[0028] The harvesting unit 4 cuts the crop (sugarcane) planted in the field. The topper 5 cuts the upper leaf portion of the crop. The conveying device 6 conveys the crop harvested by the harvesting unit 4 upwards and rearwards. The separation device 7 is located at the rear of the traveling machine and separates the crop being conveyed by the conveying device 6 into impurities and harvested material (sugarcane). The conveying conveyor 8 is connected to the rear of the traveling machine and is capable of rotating around a vertical pivot axis X1 with its lower end as a pivot point. It receives the harvested material from the separation device 7 and conveys it diagonally upwards to discharge it outside the machine. The engine 9, which is the drive source, supplies power to various parts of the machine.

[0029] The driver's unit 3 is located high up at the front of the vehicle and is surrounded by the cabin 10. Inside the cabin 10 are the driver's seat, steering wheel, control panel, etc. There are openable doors on both the left and right sides of the cabin 10.

[0030] [Configuration of the harvesting unit and conveying device] As shown in Figure 1, the harvesting unit 4 is located at the front lower part of the traveling machine. The harvesting unit 4 is equipped with left and right grass dividers 11 and a harvesting header 12. The left and right grass dividers 11 separate and guide the crops to be harvested from the planted crops. The harvesting header 12 cuts the crops to be planted in the field and sends them to the rear. The left and right grass dividers 11 are equipped with vertically oriented grass divider rotating bodies 13 that are rotationally driven.

[0031] The harvesting header 12 is positioned behind the left and right weed dividers 11. Rollers are located within the area enclosed by the left and right side walls of the harvesting header 12. The rollers push the crops forward and then sweep them in backward. The harvesting header 12 is also equipped with a cutting device 15 for cutting the base of the crop plants. The cutting device 15 is located behind the left and right weed dividers 11. The cutting device 15 is equipped with a pair of rotary cutters on the left and right sides. The rotary cutters rotate around an upper and lower axis to cut the base of the crop plants.

[0032] As shown in Figure 3, the starting end of the conveying device 6 is connected to the rear of the cutting device 15. The conveying device 6 is positioned in an upward-sloping position to convey the crops towards the rear and upward of the machine. The conveying device 6 has a conveying path formed by a roughly rectangular cylindrical structure. The conveying device 6 is equipped with scraping rotating bodies 16 on both the upper and lower sides of the transport path. The scraping rotating bodies 16 are provided at appropriate intervals in the conveying direction. The scraping rotating bodies 16 on both the upper and lower sides are driven to rotate in opposite directions. The long crops cut by the cutting unit 4 are conveyed to the rear while being held between the scraping rotating bodies 16 on both the upper and lower sides.

[0033] The conveying device 6 is equipped with a pair of upper and lower cutting rollers 16C at the end of the conveying process, and each cutting roller 16C is equipped with a cutting blade that extends radially outward. Long crops are cut to a predetermined length by being gripped by the cutting blades of the cutting rollers 16C at the end of the conveying process. The "predetermined length" is, for example, a length that is easy to handle in subsequent transport and processing processes.

[0034] [Damper configuration] As shown in Figures 3 and 4, a damper 17 is provided across the transport terminal of the transport device 6 and the separation device 7 to adjust the discharge angle of the crops discharged from the transport device 6. The damper 17 is made of a plate-shaped member. The central part of the damper 17 in the front-rear direction is bent, and the portion of the damper 17 on the transport device 6 side is inclined to be lower towards the front.

[0035] The front end of the damper 17 is supported by the conveying device 6, and the rear end of the damper 17 is supported by the separation device 7. Specifically, it is configured as follows: The separation device 7 is equipped with an input section 40 for receiving crops discharged from the conveying device 6. The input section 40 is equipped with an input port 40A and a connecting section 40B that connects the conveying end of the conveying device 6 to the input port 40A. The input port 40A is an opening formed in the side wall of the separation section 41, which will be described later. The connecting section 40B is equipped with a side wall section 40Ba that is connected to the side wall of the conveying device 6 and an upper wall section 40Bb that is connected to the upper wall of the conveying device 6. The front end of the damper 17 is supported by the left and right side walls of the conveying device 6 so as to be able to swing around the pivot axis Y1, and the rear end of the damper 17 is supported by the side wall section 40Ba.

[0036] The rear end of the damper 17 is provided with a bolt hole 17a for fastening and fixing to the side wall portion 40Ba, and multiple fastening holes 71 of different heights are formed in the left and right side wall portions 40Ba. After swinging the damper 17 around the pivot axis Y1, the angle of the damper 17 can be adjusted by selecting one of the multiple fastening holes 71 and fastening the selected fastening hole 71 to the bolt hole 17a of the damper 17 with a bolt.

[0037] A sheet-like member 72 is supported above the input opening 40A to cover the gap between the damper 17 and the input opening 40A. Specifically, a support portion 73 for supporting the sheet-like member 72 is provided in the portion of the separation portion 41 described later that is above the upper end of the input opening 40A. The sheet-like member 72 is bent so that its two opposing edges overlap, and the overlapped portion is supported by the support portion 73. In this embodiment, the sheet-like member 72 is made of a flexible sheet such as polyethylene. The lower end of the bent sheet-like member 72 abuts against the damper 17, thereby covering the gap between the damper 17 and the input opening 40A.

[0038] [Configuration of the separation device] As shown in Figures 3 to 5, the separation device 7 is equipped with an input section 40, a separation section 41, a hood section 42, and a fan 43. A hopper 19 (see Figure 1) is provided directly below the separation device 7 and behind and below the rear end of the conveying device 6 to receive the crops discharged downward from the conveying device 6. The crops received in the hopper 19 are guided to the starting end of the conveying conveyor 8.

[0039] The separation section 41 is formed in a cylindrical shape in a plan view. The lower end of the separation section 41 is open downwards. The separation section 41 separates the harvested crop into impurities and harvested crop, guiding the impurities upwards and the harvested crop downwards.

[0040] The fan 43 is configured to rotate around the pivot axis X1 by the power of the hydraulic motor 43M. The fan 43 is installed sandwiched between the hood section 42 and the separation section 41. The separation device 7 separates and discharges to the outside fine stem fragments, leaf fragments, and other impurities contained in the crops discharged from the end of the conveying device 6 by the ventilation action of the fan 43.

[0041] In this embodiment, the hood section 42 is configured to rotate in accordance with the rotation of the conveyor belt 8. The hood section 42 is provided above the separation section 41 so as to be rotatable around the pivot axis X1, and the direction of discharge of foreign matter can be changed. The pivot axis X1 is also the pivot axis of the hood section 42 (see Figure 2). The hood section 42 is equipped with left and right contact members 44. When the hood section 42 rotates, the contact members 44 swing together with the hood section 42. When the contact members 44 come into contact with the restricting member 45, further swinging of the hood section 42 is restricted.

[0042] The harvested material, being heavier than the impurities, falls downwards without being sucked up by the fan 43. As described above, the fallen harvested material is caught in the hopper 19 and guided to the starting end of the conveyor belt 8.

[0043] [Conveyor system configuration] As shown in Figure 1, the conveyor belt 8 is configured to extend diagonally upward from below the separation device 7. The conveyor belt 8 has a pair of left and right side walls 24 positioned in an upward sloping position, and a conveyor belt (not shown) is rotatably supported between the right and left side plates. It is configured to receive the harvested material from the separation device 7, transport it diagonally upward, and discharge it outside the machine.

[0044] As shown in Figure 1, a swivel frame 21 that supports the conveyor belt 8 from below is pivotably connected to a conveyor support frame 20 located at the rear end of the mobile unit. As shown in Figures 6 and 7, the swivel frame 21 is configured to swivel around a pivot axis X1. A pair of hydraulically driven swivel hydraulic cylinders 22S are pivotably connected to both the conveyor support frame 20 and the swivel frame 21. The swivel hydraulic cylinders 22S rotate the conveyor belt 8 left and right. With this configuration, the conveyor belt 8 is connected to the mobile unit in a state that allows it to swivel around a vertical pivot axis X1, with its lower end as a pivot point.

[0045] As shown in Figures 3 and 4, a bearing member 28 is provided on the upper part of the swivel frame body 21. The bearing member 28 supports the pivot axis 23 of the conveyor belt 8. The pivot axis 23 is connected to the frame body of the conveyor belt 8. A lateral axis Y2 exists at the center of the pivot axis 23, and the conveyor belt 8 is configured to swing up and down around the lateral axis Y2 with its lower end as a pivot point. The lateral axis Y2 is the pivot axis of the conveyor belt 8.

[0046] [Configuration of the upper support mechanism of the conveyor belt] As shown in Figures 1 to 4, an upper support mechanism 50 (corresponding to the "support mechanism" of the present invention) is provided, extending across the separation device 7 and the conveyor belt 8, supporting a portion above the lower end of the conveyor belt 8, and configured to be rotatable relative to the separation device 7.

[0047] As shown in Figure 5, the upper support mechanism 50 includes a pair of left and right lifting hydraulic cylinders 51 connected to the rear of the separation device 7 and the conveyor belt 8, respectively; a cable-like body 52 wound around the separation device 7 and having a right cable-like body 52R and a left cable-like body 52L; a pair of left and right first connecting bodies 53 that connect the lifting hydraulic cylinders 51 and the cable-like body 52; a second connecting body 54 that connects the right cable-like body 52R and the left cable-like body 52L; and a plate-like member 55 that connects the pair of left and right first connecting bodies 53.

[0048] Two hydraulically driven lifting hydraulic cylinders 51 are connected to the separation device 7 and the conveyor belt 8, respectively, and the lifting hydraulic cylinders 51 drive the conveyor belt 8 to swing up and down. The ends of the two lifting hydraulic cylinders 51 are connected to protrusions 24a provided on each of the pair of side walls 24 of the conveyor belt 8.

[0049] The right cable-like body 52R and the left cable-like body 52L are so-called chains. The separation device 7 has a cylindrical part 46 formed in a cylindrical shape with a pivot axis X1 at the upper part of the separation section 41. The right cable-like body 52R and the left cable-like body 52L are wound around the outer circumference of the cylindrical part 46, on the semicircular side opposite to the side where the conveyor belt 8 is located. As shown in Figures 4, 5, and 9, two flanges 47 are formed on the outer circumference of the cylindrical part 46, extending along the circumferential direction of the cylindrical part 46, arranged vertically, and having a horizontal surface portion over the entire circumference. The cable-like body 52 is positioned between the two flanges 47. The right cable-like body 52R and the left cable-like body 52L are each made up of approximately the same length.

[0050] As shown in Figure 5, the right first connecting body 53 is connected to the end of the right cable-like body 52R on the side where the conveyor belt 8 is located. The left first connecting body 53 is connected to the end of the left cable-like body 52L on the side where the conveyor belt 8 is located. The right and left first connecting bodies 53 are placed between two flanges 47. One end of a lifting hydraulic cylinder 51 is connected to each of the two first connecting bodies 53, and the other end of the lifting hydraulic cylinder 51 is connected to the longitudinal central region of the conveyor belt 8. A follow member 49 provided on the first connecting body 53 moves in conjunction with the rotation of the conveyor belt 8 and comes into contact with a contact member 44 provided on the hood portion 42, thereby causing the hood portion 42 to rotate in accordance with the rotation of the conveyor belt 8.

[0051] The right end of the second connecting body 54 is connected to the end of the right cable-like body 52R opposite to the side where the conveyor belt 8 is located. The left end of the second connecting body 54 is connected to the end of the left cable-like body 52L opposite to the side where the conveyor belt 8 is located.

[0052] The cable-like body 52 is composed of multiple pins and a pair of plates connecting adjacent pins. A horizontal rotating roller 61 (corresponding to the "sub-rotating body" of the present invention) is fitted onto each pin of the cable-like body 52 and is configured to rotate around a vertical rotation axis that extends along the direction of the pivot axis X1. With this configuration, each horizontal rotating roller 61 moves while rotating along the outer circumference of the cylindrical part 46 as the conveyor belt 8 rotates. Specifically, an outer peripheral member 48 is provided between the upper and lower flanges 47 on the outer circumference of the cylindrical part 46 (see Figure 9), and each horizontal rotating roller 61 moves while rotating in contact with the outer peripheral surface of the outer peripheral member 48.

[0053] Each of the two first connecting bodies 53 and the second connecting body 54 is equipped with multiple vertical rotating rollers 62 (corresponding to the "rotating body" of the present invention) that move while rotating along the circumferential direction of the cylindrical portion 46 as the conveyor belt 8 rotates. In this embodiment, each first connecting body 53 is equipped with two vertical rotating rollers 62, and the second connecting body 54 is equipped with one vertical rotating roller 62. In other words, there are a total of five vertical rotating rollers 62.

[0054] In this embodiment, the vertical rotating roller 62 provided on the first connecting body 53 is located behind the pivot axis X1, and the vertical rotating roller 62 provided on the second connecting body 54 is located in front of the pivot axis X1.

[0055] As shown in Figure 8, horizontal rotating rollers 61 are provided at the connection points of the right cable-like body 52R to the second connecting body 54 and the left cable-like body 52L to the second connecting body 54, respectively. Also, as shown in Figure 5, each first connecting body 53 is provided with two horizontal rotating rollers 65 between the two vertical rotating rollers 62, which are configured to rotate around a vertical rotation axis that extends in the direction of the pivot axis X1.

[0056] The plate-shaped member 55 is wound around the outer circumference of the cylindrical portion 46, spanning two first connecting bodies 53. The plate-shaped member 55 is positioned between two flanges 47 over the semicircular circumference on the side of the outer circumference of the cylindrical portion 46 where the conveyor belt 8 is located. The cable-like body 52 and the plate-shaped member 55 are connected by the two first connecting bodies 53.

[0057] [Configuration of vertical rotating rollers] As shown in Figures 8 and 9, the vertical rotating roller 62 is configured to rotate around a horizontal rotation axis Y3 that extends along the radial direction of the cylindrical portion 46, and moves while rotating on the cylindrical outer circumference of the cylindrical portion 46. Specifically, the vertical rotating roller 62 is positioned between the upper and lower flanges 47 of the outer circumference of the cylindrical portion 46, and moves while rotating with the upper and lower flanges 47 in contact with each other's opposing surfaces.

[0058] Since the vertical rotating rollers 62 are provided on the first connecting body 53 and the second connecting body 54, the configuration is such that the vertical rotating rollers 62 are positioned on the outer circumference of the cylindrical portion 46 where the horizontal rotating rollers 61 are not located.

[0059] In this embodiment, the vertical rotating roller 62 is supported by the first connecting body 53 and the second connecting body 54 via a bearing 66. Although Figure 9 only shows a configuration in which the vertical rotating roller 62 is supported by the second connecting body 54 for the sake of explanation, the vertical rotating roller 62 is similarly supported by the first connecting body 53 via a bearing 66.

[0060] The vertical rotating roller 62 has a small-diameter portion 63 on the side of the pivot axis X1 that is smaller in the radial direction than the rest of the vertical rotating roller 62. The small-diameter portion 63 of the vertical rotating roller 62 has an inclined surface 64 that slopes more linearly toward the horizontal rotation axis Y3 as it moves inward from the cylindrical portion 46.

[0061] The vertical rotating roller 62 has a small-diameter portion 63 on the pivot axis side that is smaller in the radial direction than the rest of the vertical rotating roller 62. As the conveyor 8 rotates and moves along the circumferential direction of the cylindrical portion 46, the small-diameter portion 63 does not come into contact with the ground while rotating. As a result, even if the vertical rotating roller 62 rotates in sync with the ground speed of the rest of the vertical rotating roller 62, the small-diameter portion 63 does not come into contact with the ground. This reduces wear on the pivot axis side of the vertical rotating roller 62 and reduces damage to the vertical rotating roller 62.

[0062] [Another embodiment] The following are examples of alternative embodiments that modify the above embodiments.

[0063] (1) In the above embodiment, the inclined surface 64 of the vertical rotating roller 62 was described as being configured to be inclined more linearly toward the horizontal rotation axis Y3 toward the inner side of the cylindrical portion 46. However, the present invention is not limited to the above embodiment, and the inclined surface 64 of the vertical rotating roller 62 may be configured to be inclined more curvilinearly toward the horizontal rotation axis Y3 toward the inner side of the cylindrical portion 46.

[0064] (2) In the above embodiment, the upper support mechanism 50 was described as having a configuration with a lateral rotating roller 61, but the present invention is not limited to the above embodiment, and the upper support mechanism 50 may be configured without a lateral rotating roller 61.

[0065] (3) In the above embodiment, the configuration in which each lateral rotating roller 61 moves while rotating on the outer surface of the outer peripheral member 48 was described as an example, but the present invention is not limited to the above embodiment. For example, the outer peripheral member 48 may not be provided, and each lateral rotating roller 61 may move while rotating on the outer surface of the cylindrical portion 46.

[0066] (4) In the above embodiment, the vertical rotating roller 62 was described as being supported by the first connecting body 53 and the second connecting body 54 via a bearing 66. However, the present invention is not limited to the above embodiment, and the vertical rotating roller 62 may be configured without a bearing 66 and directly supported by the first connecting body 53 and the second connecting body 54.

[0067] (5) In the above embodiment, a configuration in which the vertical rotating roller 62 provided on the first connecting body 53 is located behind the pivot axis X1 and the vertical rotating roller 62 provided on the second connecting body 54 is located in front of the pivot axis X1 was described as an example. However, the present invention is not limited to the above embodiment, and the vertical rotating roller 62 may be located either in front of or behind the pivot axis X1.

[0068] (6) In the above embodiment, a configuration in which the vertical rotating roller 62 is arranged between the upper and lower flanges 47 of the outer circumference of the cylindrical portion 46 was described as an example. However, the present invention is not limited to the above embodiment, and the vertical rotating roller 62 may be arranged at a location other than between the upper and lower flanges 47, or the flanges 47 may not be provided.

[0069] (7) In the above embodiment, the configuration in which five vertical rotating rollers 62 are provided was described as an example, but the present invention is not limited to the above embodiment, and the vertical rotating rollers 62 may be provided in a configuration of four or fewer, or in a configuration of six or more.

[0070] Furthermore, the configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, as long as no inconsistencies arise. In addition, the embodiments disclosed herein are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the object of the present invention. [Industrial applicability]

[0071] The present invention can be used in sugarcane harvesting machines equipped with a conveyor that receives the harvested material, transports it diagonally upward, and discharges it outside the machine. [Explanation of symbols]

[0072] 7: Separation device 8: Conveyor 46: Cylindrical section 47: Flange 50: Upper support mechanism (support mechanism) 61: Horizontal rotating roller (sub-rotating body) 62: Vertical rotating roller (rotating body) 63: Small diameter part 64: Inclined surface X1: Swivel axis Y3: Horizontal rotation axis

Claims

1. A mobile vehicle capable of moving, A separation device for separating harvested crops into impurities and harvested material, A conveyor extends diagonally upward from a lower part of the separation device, is connected to the traveling machine body in a manner that allows it to rotate around a vertical pivot axis with its lower end as a fulcrum, and receives the harvested material from the separation device, transports it diagonally upward, and discharges it outside the machine. A support mechanism is provided that extends across the separation device and the conveying conveyor, supports a portion of the conveying conveyor above its lower end, and is configured to be rotatable relative to the separation device. The separation device has a cylindrical portion formed in a cylindrical shape centered on the pivot axis, The support mechanism has a rotating body that moves while rotating along the circumferential direction of the cylindrical portion as the conveyor belt rotates. The rotating body is configured to be rotatable about a horizontal rotation axis extending along the radial direction of the cylindrical portion, and the portion of the rotating body on the pivot axis side has a small diameter portion that is smaller in the radial direction than the other portion of the rotating body.

2. The sugarcane harvester according to claim 1, wherein the small-diameter portion of the rotating body has an inclined surface that slopes more linearly or curvilinearly toward the horizontal rotation axis towards the inner side of the cylindrical portion.

3. The sugarcane harvester according to claim 1, wherein the rotating body is provided in multiple units.

4. The sugarcane harvester according to claim 3, wherein at least one of the plurality of rotating bodies is located in front of the pivot axis.

5. The sugarcane harvester according to claim 3 or 4, wherein the rotating body is provided with five units.

6. The support mechanism has two flanges that extend along the circumferential direction of the cylindrical portion and are arranged to be aligned vertically. The sugarcane harvester according to claim 1, wherein the rotating body is positioned between the two flanges.

7. The sugarcane harvester according to claim 1, wherein the support mechanism is configured to be rotatable about a vertical rotation axis extending along the direction of the pivot axis, and has a sub-rotating body that moves while rotating on the outer surface of the cylindrical part in conjunction with the rotation of the conveying conveyor.

8. The sugarcane harvester according to claim 7, wherein the rotating body is positioned on the outer circumference of the cylindrical portion where the auxiliary rotating body is not located.

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