Sugarcane harvester

Abstract

The present invention is provided with a separator 7 that separates harvested crops into impurity material and harvest material, and a scaffolding 21 that enables maintenance work on the separator 7. The separator 7 has a swinging mechanism 44 that supports a hood section 42 so as to be able to swing around a top / bottom-directed swing-shaft core. The swinging mechanism 44 has first injection ports (61, 61A) for injecting lubricant from the exterior between a portion of the hood section 42 and a sliding section (47, 47a). The first injection ports (61, 61A), provided plurally around the outer periphery of the sliding section (47, 47a), are provided with second injection ports 62 through which a worker who stands on the scaffolding 21 is able to inject lubricant, and grease passages (66, 67) that guide lubricant injected through the second injection ports 62 to the first injection ports.

Description

sugarcane harvester

[0001] The present invention relates to a sugarcane harvester equipped with a separation device for separating the harvested crop into waste and harvested material.

[0002] Conventional sugarcane harvesters include, for example, those described in Patent Document 1, which are equipped with a separation device having a hood section that separates the harvested crop into debris and harvested material and can change the discharge direction of the debris.

[0003] Japanese Patent Application Publication No. 2022-101187

[0004] Furthermore, in the separation device for a sugarcane harvester described in Patent Document 1, the hood portion is supported above the case portion so as to be rotatable about a vertical axis.

[0005] In such a separation device, there is a sliding portion around the circumference of the lower end portion of the hood portion when the hood portion is rotated. Because the sliding portion is subject to wear and other factors due to rotation, it is necessary to frequently inject lubricating oil into the sliding portion, and therefore multiple inlets for injecting lubricating oil are generally provided at the sliding portion.

[0006] The hood section of the separation device of a sugarcane harvester is large because it discharges impurities from the sugarcane. This hood section has an inlet for injecting lubricating oil around the circumference of the lower end of the hood section.

[0007] Therefore, when performing oiling work, the worker needs to work around the outer periphery of the hood portion, which leaves room for improvement.

[0008] Therefore, an object of the present invention is to provide a sugarcane harvester that allows an operator to easily oil the sliding parts of the hood section without having to walk around the outer periphery of the hood section.

[0009] The sugarcane harvester of the present invention comprises a traveling body, a separation device attached to the traveling body and separating harvested crops into debris and harvested material, and a scaffolding attached to the traveling body, allowing maintenance work on the separation device. The separation device has a separation section that separates crops into debris and harvested material, a hood section that guides the debris separated by the separation section to the outside of the traveling body, and a swinging mechanism that supports the hood section so that it can swing around an up-and-down swing axis. The swinging mechanism has a sliding section along which a part of the hood section slides when the hood section swings, and a first injection port for injecting lubricating oil from the outside between the part of the hood section and the sliding section. The first injection port is provided in plurality on the outer periphery of the sliding section, and is equipped with a second injection port through which lubricating oil can be injected by an operator standing on the scaffolding, and an oil passage that guides the lubricating oil injected from the second injection port to the first injection port.

[0010] According to this invention, a worker can inject lubricating oil into the second injection port from the scaffolding, and the lubricating oil can be injected through the first injection port into the area between the part of the hood portion and the sliding portion, which is the oiling point. Therefore, the worker can easily oil the sliding portion of the hood portion without having to go around the outer periphery of the hood portion.

[0011] In the present invention, it is preferable that each of the plurality of first inlets is provided with the oil passage and the second inlet.

[0012] According to this configuration, each first filler port is provided with a second filler port and an oil passage, so that the operator can adjust the amount of lubricating oil to be poured into each second filler port, thereby enabling appropriate adjustment of the amount of lubricating oil to be poured into each first filler port, thereby enabling appropriate lubrication work.

[0013] In the present invention, it is preferable that a fixing member to which the plurality of second injection ports are fixed is provided.

[0014] According to this configuration, the second filler ports are fixed to the fixing member in a grouped state. Therefore, the worker can fill the second filler ports, which are stable because they are fixed to the fixing member, making the oil filling work easier. Furthermore, because the second filler ports are arranged in a grouped position, the worker's movement time can be reduced, making the oil filling work easier.

[0015] In the present invention, it is preferable that the second injection port is provided in the front part of the oscillating mechanism in the fore-and-aft direction of the running body, and that the scaffolding is arranged in front of the oscillating mechanism in the fore-and-aft direction of the running body.

[0016] According to this configuration, the second injection port and the platform are positioned in the same direction relative to the swing mechanism, making it easier for a worker standing on the platform to access the second injection port.

[0017] In the present invention, it is preferable that a cooling device for cooling the drive source is provided in front of the separating device, and the scaffolding also serves as a maintenance scaffolding for the cooling device.

[0018] According to this configuration, it is possible to perform oiling work on the separation device (second inlet) using the maintenance scaffolding for the cooling device. As a result, it is not necessary to provide a separate scaffolding for oiling work on the second inlet of the separation device, which makes it possible to reduce the number of parts, etc., and also to reduce costs and work man-hours, etc.

[0019] In the present invention, it is preferable that an oil reservoir for storing lubricating oil is provided between the sliding portion and the first injection port.

[0020] According to this configuration, when lubricating oil is supplied to the second fill port, the lubricating oil is stored in the oil reservoir. After the lubricating oil supply operation, the lubricating oil is supplied from the oil reservoir to the space between the part of the hood portion and the sliding portion. As a result, the number of times of lubrication can be reduced.

[0021] In the present invention, it is preferable that the sliding portion has an inner cylindrical portion formed in a cylindrical shape at the upper part of the separation portion, and the hood portion has an outer cylindrical portion formed in a cylindrical shape at the lower part of the hood portion that abuts the outer periphery of the inner cylindrical portion, and that the lubricating oil injected into the first injection port flows between the inner cylindrical portion and the outer cylindrical portion.

[0022] According to this configuration, the outer cylindrical portion, which is part of the hood portion, slides on the inner cylindrical portion, which is the sliding portion. In other words, since the outer cylindrical portion slides along the outer periphery of the cylindrical inner cylindrical portion, it is necessary to oil the wide sliding area along the outer periphery of the inner cylindrical portion. Here, a worker standing on the scaffold injects lubricating oil into the second injection port, and the lubricating oil flows between the inner cylindrical portion and the outer cylindrical portion through the first injection port. In other words, by injecting lubricating oil into the second injection port, the worker can easily oil the wide sliding area along the outer periphery of the inner cylindrical portion.

[0023] In the present invention, it is preferable that a blocking member be provided at a position corresponding to the upper end of the inner cylindrical portion to block the upper end of the space between the inner cylindrical portion and the outer cylindrical portion.

[0024] This configuration makes it possible to reduce the amount of dust and other particles entering the space between the inner and outer cylindrical portions from above.

[0025] In the present invention, it is preferable that the hood portion has a first flange extending outward from the outer tube portion, the sliding portion has a second flange extending outward from the inner tube portion and against which the first flange slides, and the first injection port is provided in the outer tube portion and the first flange.

[0026] With this configuration, by injecting lubricating oil into the second inlet between the inner and outer cylindrical portions and between the first and second flanges, it is possible to carry out the lubrication operation through the first inlet.

[0027] In the present invention, it is preferable that a strip of steel is provided on the outer periphery of the inner tube portion and extends along the outer periphery of the inner tube portion, and a protrusion portion extends from the outer tube portion toward the inner tube portion at a position below the strip of steel.

[0028] With this configuration, even if the hood portion attempts to move upward due to, for example, shaking while traveling, the protrusions will catch on the steel band, preventing the hood portion from falling off the swing mechanism.

[0029] In the present invention, it is preferable that the strip steel is provided on a part of the outer periphery of the inner cylindrical portion.

[0030] With this configuration, the steel strips are arranged at intervals around the outer periphery of the inner cylindrical portion. Lubricating oil is collected between adjacent steel strips, and the collected oil is supplied between a part of the hood portion and the sliding portion. As a result, it is possible to reduce the number of times oiling is performed.

[0031] In the present invention, it is preferable that the steel strip abuts against the hood portion, and a gap is provided surrounded by the steel strip, the inner tubular portion, and the outer tubular portion.

[0032] With this configuration, the lubricating oil is collected in the gap surrounded by the steel strip, the inner cylinder, and the outer cylinder, and the collected lubricating oil is supplied to the gap between a part of the hood part and the sliding part, thereby reducing the number of times lubrication work is performed.

[0033] In the present invention, it is preferable that the first injection port is provided in the outer cylindrical portion, and the strip steel is provided in a position on the inner cylindrical portion corresponding to the position where the first injection port is located.

[0034] According to this configuration, the lubricating oil flows directly from the first inlet into the gap between the steel strip and the hood portion, thereby enabling efficient oiling work.

[0035] Fig. 1 is a side view of a sugarcane harvester; Fig. 2 is a plan view of a sugarcane harvester; Fig. 3 is a side view showing a configuration of a separation device; Fig. 4 is a plan view showing a configuration of a separation device; Fig. 5 is a cross-sectional view showing a configuration of a first injection port; Fig. 6 is a development view of the left side of an outer cylinder showing the arrangement of a second injection port.

[0036] An embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of arrow F in the drawings will be referred to as "front," the direction of arrow B as "rear," the direction of arrow L as "left," and the direction of arrow R as "right." Furthermore, the direction of arrow U in the drawings will be referred to as "up," and the direction of arrow D as "down."

[0037] [Overall configuration of the sugarcane harvester] As shown in Figure 1, the sugarcane harvester comprises a traveling body, and left and right front wheels 1 that are provided on the traveling body and are steerable, and left and right rear wheels 2 that are non-steerable and are driven to rotate. The traveling body can travel by driving the rear wheels 2.

[0038] As shown in Figures 1 and 2, the traveling machine body is equipped with a driving unit 3, a reaping unit 4, a topper 5, a transporting device 6, a separating device 7, a conveyor 8, an engine 9, etc.

[0039] The reaping unit 4 reaps crops (sugarcane) planted in the field. The topper 5 cuts the upper leaves of the crops. The transporting device 6 transports the crops harvested by the reaping unit 4 rearward and upward. The separating device 7 is provided at the rear of the traveling machine body and separates the crops transported by the transporting device 6 into impurities and the harvested product (sugarcane). The conveyor 8 is connected to the rear of the traveling machine body and can rotate around the vertical axis X1 with its lower end as a fulcrum. The conveyor 8 receives the harvested product from the separating device 7, transports it diagonally upward, and discharges it outside the machine. The engine 9, which serves as the drive source, supplies power to each part of the machine body.

[0040] The driver's section 3 is provided at a high position at the front of the traveling body and is surrounded by a cabin 10. Inside the cabin 10, a driver's seat, a steering wheel, an operation panel, etc. are provided. Openable and closable doors are provided on both the left and right side portions of the cabin 10.

[0041] [Configuration of the Engine and Its Surroundings] As shown in FIGS. 1 and 2 , the engine 9 is provided in a central position in the left-right direction of the machine body, behind the driving section 3 and above the transport device 6 .

[0042] A cooling device 20 is provided to cool the engine 9. The cooling device 20 is provided in a state where it is located behind the driving section 3 and above the rear side of the transport device 6. Although not described in detail here, the cooling device 20 is provided with a plurality of devices such as a cooling fan and a radiator cooled by the cooling fan, which are arranged in a line in the front-to-rear direction.

[0043] A maintenance scaffold 21 (corresponding to the "scaffold" of the present invention) for the cooling device 20 is provided behind the cooling device 20 on the traveling machine body. The maintenance scaffold 21 is configured to be usable as a scaffold when a worker performs maintenance on the cooling device 20.

[0044] A dust cover 22 is provided on the rear side of the cooling device 20. The dust cover 22 has a porous mesh on each of its left and right side surfaces, rear surface, and top surface. This configuration makes it possible to draw in outside air through the dust cover 22 while preventing dust from entering inside the dust cover 22.

[0045] 4, the dustproof cover 22 is configured to be switchable between a closed state in which it covers the cooling device 20 and the maintenance scaffolding 21, and an open state in which it exposes the cooling device 20 and the maintenance scaffolding 21. The dustproof cover 22 is configured to be swingable via a hinge 22a that rotates around an axis extending in the front-rear direction of the traveling machine body.

[0046] By opening the dust cover 22, a worker can use the maintenance scaffolding 21 to perform maintenance work on the cooling device 20.

[0047] [Configuration of the reaping unit and transport device] As shown in Figure 1, the reaping unit 4 is provided at the front lower part of the traveling body. The reaping unit 4 is provided with left and right grass dividing devices 11 and a cutting header 12. The left and right grass dividing devices 11 divide and guide the planted crops to be harvested. The cutting header 12 cuts the crops planted in the field and sends them to the rear. The left and right grass dividing devices 11 are provided with a grass dividing rotor 13 that is rotated and is oriented vertically.

[0048] The harvesting header 12 is arranged adjacent to the rear of the left and right grass dividing devices 11. A roller is provided in the area sandwiched between the left and right side walls of the harvesting header 12, and the roller pushes the crops down so that they fall forward while sweeping them rearward. The harvesting header 12 is also equipped with a cutting device 15 that cuts the base of the crops. The cutting device 15 is located behind the left and right grass dividing devices 11. The cutting device 15 is equipped with a pair of left and right rotary cutters, which rotate around an upper and lower axis to cut the base of the crops.

[0049] The conveying start end of the conveying device 6 is connected to the rear of the cutting device 15. The conveying device 6 is arranged in a rear-upward tilted position so as to convey the crops toward the rear and upper part of the machine body. A conveying path is formed in the conveying device 6 by a substantially rectangular cylindrical structure. Scraping rotors are provided on both the upper and lower sides of the transfer path in the conveying device 6. The scraping rotors are provided at an appropriate interval in the conveying direction. The upper and lower scraping rotors are driven to rotate in opposite directions. The long crops cut by the reaping unit 4 are conveyed rearward while being sandwiched between the upper and lower scraping rotors.

[0050] The conveying device 6 is provided with a pair of upper and lower cutting rollers 16, 16 at the end of the conveying path, and the cutting rollers 16, 16 are equipped with cutting blades extending radially outward. Long crops are cut to a predetermined length by being sandwiched between the respective cutting blades of the cutting rollers 16, 16 at the end of the conveying path. The "predetermined length" is, for example, a length that is easy to handle in the subsequent transport and processing steps.

[0051] [Configuration of Separation Device] As shown in Figures 3 and 4, the separation device 7 separates impurities such as fine stem and culm debris and leaf fragments contained in the crops discharged from the conveying end of the conveying device 6 and discharges them to the outside by the ventilation action of a fan 43 rotating around the vertical axis X1.

[0052] A hopper 19 (see FIG. 1) is provided directly below the separator 7 and behind and below the rear end of the conveyor 6 to receive the crops discharged downward from the conveyor 6. The crops received by the hopper 19 are guided to the conveying start end of the conveyor 8.

[0053] As shown in Figure 1, the conveyor 8 is supported by a conveyor support frame 17 provided at the rear of the traveling machine body, and extends from the rear of the traveling machine body toward the outside and upward of the machine body. The conveyor 8 holds and transports the crops and releases them outward from the end of the transport.

[0054] As shown in FIGS. 3 and 4, the separating device 7 includes a separating section 41, a hood section 42, and a fan 43.

[0055] The fan 43 is configured to be rotatable about the vertical axis X1 by the power of a hydraulic motor 43M. The fan 43 is provided in a state sandwiched between the hood portion 42 and the separation portion 41.

[0056] The separator 41 is cylindrical in plan view. The lower end of the separator 41 is open downward. The separator 41 separates the harvested crop into impurities and the harvested product, and guides the impurities upward and the harvested product downward.

[0057] The hood section 42 is provided with a discharge port 42a that discharges (guides) the impurities separated by the separation section 41 to the outside of the traveling machine body.

[0058] The stalks of the crop are cut by cutting rollers 16, 16 (see FIG. 1 ) at the end of the conveying device 6, and then fed into the separating section 41. The cutting rollers 16, 16 are feeding devices that feed the crop into the separating section 41.

[0059] The fan 43 is provided inside the separating section 41 and rotates around a vertical axis X1 that passes through the center of the circle to generate a sorting wind. The vertical axis X1 is the central axis of the fan 43. The sorting wind rises while swirling upward. Crops thrown into the separating section 41 are subjected to the suction action of the fan 43, and relatively light impurities such as fine stem and culm debris and leaf fragments are sucked upward. The impurities then pass through the fan 43 and are discharged to the outside from the hood section 42 via the discharge port 42a.

[0060] The hood section 42 is provided above the separation section 41 so as to be swingable about a vertical axis X1 by a swing mechanism 44 (described later), thereby changing the direction in which impurities are discharged. The vertical axis X1 also serves as the swing axis of the hood section 42. The hood section 42 is provided with left and right regulating members 31. When the hood section 42 is swung, the regulating members 31 swing together with the hood section 42. When the regulating members 31 abut against the abutting members 32, further swinging of the hood section 42 is restricted.

[0061] The harvested product, which is heavier than the impurities, falls directly downward without being sucked by the fan 43. As described above, the fallen harvested product is received by the hopper 19 and guided to the conveying start end of the conveyor 8.

[0062] 3 and 4, the swinging mechanism 44 is provided at the upper end portion of the separation portion 41. The swinging mechanism 44 has a sliding portion 45 along which the lower end portion of the hood portion 42 slides when the hood portion 42 swings.

[0063] A cylindrical outer tube portion 46 is formed at the lower end portion of the hood portion 42. Furthermore, a first flange 46a is formed extending outward from the lower end of the outer tube portion 46.

[0064] An inner cylindrical portion 47 formed in a cylindrical shape is formed as the sliding portion 45 in the upper portion of the separating portion 41. Furthermore, a second flange 47a extending outward from the inner cylindrical portion 47 is formed as the sliding portion 45.

[0065] In this embodiment, the inner tubular portion 47 has a strip-shaped steel band 48 that is provided on the outer periphery of the inner tubular portion 47 and extends along the outer periphery of the inner tubular portion 47. Four steel bands 48 are provided, and are arranged at intervals along the outer periphery of the inner tubular portion 47 at the front, rear, right, and left portions of the inner tubular portion 47. With this configuration, the steel bands 48 are provided on a portion of the outer periphery of the inner tubular portion 47.

[0066] The outer periphery of the inner tubular portion 47, i.e., in this embodiment, the steel band 48, is configured to abut against the outer tubular portion 46 of the hood portion 42. Note that although Figures 4 and 5 show a state in which there is a gap between the steel band 48 and the outer tubular portion 46, when the hood portion 42 swings, for example, the hood portion 42 may move slightly relative to the steel band 48 in the front-to-rear and left-to-right directions of the traveling machine body. As a result, a portion of the steel band 48 abuts against the outer tubular portion 46.

[0067] The first flange 46a is configured to abut against the upper surface of the second flange 47a.

[0068] With the above-described configuration, when the hood portion 42 swings around the vertical axis X1, the steel strip 48 slides on the inner surface of the outer tubular portion 46, and the first flange 46a slides on the upper surface of the second flange 47a. As a result, the hood portion 42 can swing while being supported by the inner tubular portion 47 and the second flange 47a, which serve as the sliding portion 45. With the above-described configuration, the swing mechanism 44 supports the hood portion 42 so that it can swing around the axis X1, which is the vertical swing axis.

[0069] 5 , the steel strip 48 is provided on the upper portion of the outer peripheral surface of the inner cylindrical portion 47, and is disposed at a fixed distance above the second flange 47a. The steel strip 48 is also disposed at a fixed distance from the upper end of the inner cylindrical portion 47. With this configuration, a space G (gap) surrounded by the inner cylindrical portion 47, the outer cylindrical portion 46, and the steel strip 48 is formed in the portions above and below the steel strip 48 between the inner cylindrical portion 47 and the outer cylindrical portion 46.

[0070] A bolt Bo is inserted into a hole provided in the outer tubular portion 46 and is located below the steel band 48 in the space G (gap). The portion of the bolt Bo that extends from the inner surface of the outer tubular portion 46 toward the inner tubular portion 47 is configured as a protrusion 51. With this configuration, even if the outer tubular portion 46 of the hood portion 42 moves in a direction (upward) away from the inner tubular portion 47, the protrusion 51 abuts against the steel band 48. As a result, it is possible to prevent the hood portion 42 from coming off the inner tubular portion 47.

[0071] As shown in Fig. 5, in this embodiment, a horizontal member 52 is provided at the upper end of the outer tube portion 46, extending outward and inward from the outer tube portion 46. The portion of the horizontal member 52 extending inward from the outer tube portion 46 extends to a position corresponding to the upper end of the inner tube portion 47. Hereinafter, this portion will be referred to as the blocking member 52a. The blocking member 52a blocks the upper end of the space between the inner tube portion 47 and the outer tube portion 46 at a position corresponding to the upper end of the inner tube portion 47. The blocking member 52a makes it possible to prevent dust from entering the space G (gap) between the inner tube portion 47 and the outer tube portion 46 from above.

[0072] 4 to 6 , the swinging mechanism 44 is provided with an oil injection mechanism for injecting lubricating oil between the outer cylindrical portion 46 and the inner cylindrical portion 47 (sliding portion 45) formed at the lower end portion of the hood portion 42, and between the first flange 46 a and the second flange 47 a (sliding portion 45). Generally, the operation of injecting lubricating oil is performed with the outlet 42 a of the hood portion 42 facing rearward in the fore-and-aft direction of the traveling machine body. Hereinafter, the explanation will be given based on the state in which the outlet 42 a of the hood portion 42 faces rearward in the fore-and-aft direction of the traveling machine body, as shown in FIGS. 1 and 2 .

[0073] The rocking mechanism 44 is provided with a first injection port 61 for injecting lubricating oil from the outside between the outer tube portion 46 (first flange 46a) and the inner tube portion 47 (second flange 47a), a second injection port 62 through which an operator can inject lubricating oil, and a tube 66 (corresponding to the "oil passage" of the present invention) that guides the lubricating oil injected from the second injection port 62 to the first injection port 61.

[0074] 4, in this embodiment, eight outer peripheral surface injection ports 61A and four upper surface injection ports 61B are provided as the first injection ports 61. The eight outer peripheral surface injection ports 61A are provided on the outer peripheral surface of the outer cylindrical portion 46 and are arranged at approximately equal intervals along the outer periphery of the outer cylindrical portion 46. The four upper surface injection ports 61B are provided on the upper surface of the first flange 46a and are arranged at approximately equal intervals along the outer periphery of the outer cylindrical portion 46.

[0075] 5, the outer peripheral surface injection port 61A provided in the outer cylindrical portion 46 is fixed to the outer peripheral surface of the outer cylindrical portion 46 via a plate-shaped member 63. The plate-shaped member 63 is fixed to the outer cylindrical portion 46 so as to cover the hole 46h formed in the outer cylindrical portion 46. As a result, the area surrounded by the plate-shaped member 63, the outer cylindrical portion 46, and the inner cylindrical portion 47 is configured as an oil reservoir 70 in which lubricating oil is accumulated. The lubricating oil injected into the outer peripheral surface injection port 61A is poured into the oil reservoir 70.

[0076] An injection hole 64 is formed in the first flange 46a at a location where the upper surface injection port 61B is located. The lubricating oil injected into the upper surface injection port 61B is then poured into the injection hole 64. In other words, the injection hole 64 functions as an oil reservoir 70 in which the lubricating oil is collected.

[0077] With the above-described configuration, an oil reservoir 70 for storing lubricating oil is provided between the sliding portion 45 and the outer peripheral surface injection port 61A. The lubricating oil injected into the outer peripheral surface injection port 61A provided in the outer cylindrical portion 46 flows into the gap between the inner cylindrical portion 47 and the outer cylindrical portion 46 via the oil reservoir 70, and further flows into the gap between the steel strip 48 and the outer cylindrical portion 46.

[0078] Similarly, the lubricating oil injected into the upper surface injection port 61B provided on the first flange 46a is configured to flow into the space between the first flange 46a and the second flange 47a via the oil reservoir 70.

[0079] 6, when the discharge port 42a of the hood portion 42 faces rearward in the fore-and-aft direction of the traveling machine body, the eight outer peripheral surface injection ports 61A provided on the outer tubular portion 46 are arranged at locations corresponding to the locations of the respective steel strips 48. Specifically, the outer peripheral surface injection ports 61A are arranged on the steel strip 48 at positions corresponding to both end portions in the longitudinal direction of the steel strip 48. In other words, the steel strip 48 is provided at locations on the inner tubular portion 47 corresponding to the locations of the outer peripheral surface injection ports 61A.

[0080] [Configuration of Second Injection Port] Two fixing members 65 to which the second injection ports 62 are fixed are provided on the maintenance scaffolding 21 side (front side) of the outer periphery of the outer tube portion 46. The fixing members 65 are allocated to the left and right in the left-right direction of the traveling machine body with respect to the maintenance scaffolding 21. Four second injection ports 62 are fixed to each of the left and right fixing members 65.

[0081] Fig. 6 shows a developed view of the left side of the outer tubular portion 46. Hereinafter, the four outer circumferential surface injection ports 61A shown in Fig. 6 will be referred to as the first outer circumferential surface injection port 61A, the second outer circumferential surface injection port 61A, the third outer circumferential surface injection port 61A, and the fourth outer circumferential surface injection port 61A, in that order from the front (left in Fig. 6). Furthermore, the two upper surface injection ports 61B shown in Fig. 6 will be referred to as the first upper surface injection port 61B and the second upper surface injection port 61B, in that order from the front (left in Fig. 6). Although not shown, the same applies to the right side of the outer tubular portion 46.

[0082] As shown in Figure 6, three of the second injection ports 62 fixed to the left fixing member 65 are connected by tubes 66 to three outer surface injection ports 61A (second to fourth outer surface injection ports 61A) located on the opposite side (rear side) of the left fixing member 65 from the maintenance scaffolding 21 and on the left side in the left-right direction of the running body.

[0083] As shown in Figure 6, the remaining one of the second injection ports 62 fixed to the left fixing member 65 (first outer peripheral injection port 61A) is connected by a tube 66 to one upper surface injection port 61B (second upper surface injection port 61B) located on the opposite side (rear side) of the maintenance scaffolding 21 and on the left side in the left-right direction of the running body.

[0084] Although not shown in the figure, three of the second injection ports 62 fixed to the right fixing member 65 are connected by tubes 66 to three outer peripheral surface injection ports 61A (second to fourth outer peripheral surface injection ports 61A) located on the opposite side (rear side) of the right fixing member 65 from the maintenance scaffolding 21 and on the right side in the left-right direction of the running body.

[0085] Although not shown in the figure, the remaining one of the second injection ports 62 fixed to the right fixing member 65 is connected by a tube 66 to one upper injection port 61B (second upper injection port 61B) located on the opposite side (rear side) from the maintenance scaffolding 21 and on the right side in the left-right direction of the running body.

[0086] Of the eight outer peripheral surface injection ports 61A provided on the outer cylinder portion 46, two outer peripheral surface injection ports 61A (hereinafter, designated by the symbol AF and referred to as "outer peripheral surface injection ports 61AF") located closer to the maintenance scaffolding 21 (front side) than the left and right fixing members 65 are connected to a second injection port 62 and a conduit 67 (corresponding to the "oil passage" of the present invention) that guides the lubricating oil injected from the second injection port 62 to the first injection port 61, as shown in Fig. 5. The end of the conduit 67 on the outer cylinder portion 46 side functions as the outer peripheral surface injection port 61AF.

[0087] Of the four upper surface injection ports 61B provided on the upper surface of the first flange 46a, the two upper surface injection ports 61B (first upper surface injection ports 61B) (hereinafter, designated by the symbol BF and referred to as "upper surface injection ports 61BF") located on the maintenance scaffolding 21 side (front side) are connected to a second injection port 62 and a conduit 67 (corresponding to the "oil passage" of the present invention) that guides the lubricating oil injected from the second injection port 62 to the upper surface injection port 61B, as shown in Figure 5. The end of the conduit 67 on the outer cylinder portion 46 side functions as the upper surface injection port 61BF.

[0088] With the above-described configuration, the second injection ports 62 are configured to be provided in the front portion of the swing mechanism 44 in the fore-and-aft direction of the traveling machine body. In other words, all of the second injection ports 62 are configured to be located on the maintenance scaffold 21 side, which is located in front of the swing mechanism 44. As a result, a worker standing on the maintenance scaffold 21 can inject lubricating oil into the second injection ports 62.

[0089] In addition, the maintenance scaffolding 21 is configured to serve both as a scaffolding for workers to inject lubricating oil into the second injection port 62 and as a scaffolding for maintenance of the cooling device 20 located in front of the separation device 7.

[0090] Other Embodiments Hereinafter, other embodiments in which the above-described embodiment is modified will be described.

[0091] (1) In the above embodiment, a configuration in which a tube 66 and a second injection port 62 are provided for each of the multiple first injection ports 61 has been described as an example, but the present invention is not limited to the above embodiment. For example, a configuration in which a tube 66 that branches so as to be connectable to the multiple first injection ports 61 and one second injection port 62 may be provided.

[0092] (2) In the above embodiment, the configuration is described as an example in which the first injection ports 61 connected to the tubes 66 and the first injection ports 61 connected to the conduits 67 are provided. However, the present invention is not limited to the above embodiment. For example, the configuration may be such that the tubes 66, rather than the conduits 67, are connected to all of the first injection ports 61.

[0093] (3) In the above embodiment, the fixing member 65 for fixing the second injection port 62 is provided, but the present invention is not limited to the above embodiment. For example, the fixing member 65 may not be provided.

[0094] (4) In the above embodiment, the second injection port 62 is provided in the front portion of the swing mechanism 44 in the fore-and-aft direction of the traveling machine body, and the maintenance scaffolding 21 is disposed in front of the swing mechanism 44. However, the present invention is not limited to the above embodiment. For example, the second injection port 62 may be provided in the rear portion of the swing mechanism 44 in the fore-and-aft direction of the traveling machine body, and the maintenance scaffolding 21 may be disposed behind the swing mechanism 44.

[0095] (5) In the above embodiment, the maintenance scaffolding 21 is described as serving both as a scaffolding for a worker to inject lubricating oil into the second fill port 62 and as a scaffolding for maintaining the cooling device 20. However, the present invention is not limited to the above embodiment. For example, a configuration may be adopted in which a scaffolding for a worker to inject lubricating oil into the second fill port 62 is provided separately from the maintenance scaffolding 21 for maintaining the cooling device 20.

[0096] (6) In the above embodiment, an oil reservoir 70 for storing lubricating oil is provided between the sliding portion 45 and the first inlet 61. However, the present invention is not limited to the above embodiment. For example, the oil reservoir 70 may not be provided between the sliding portion 45 and the first inlet 61, and the lubricating oil may flow directly between the steel strip 48 and the outer tubular portion 46, and between the first flange 46a and the second flange 47a.

[0097] (7) In the above embodiment, the steel strip 48 is provided on the outer periphery of the inner tubular portion 47. However, the present invention is not limited to the above embodiment. For example, the steel strip 48 may not be provided, and the inner tubular portion 47 may slide on the inner surface of the outer tubular portion 46.

[0098] (8) In the above embodiment, the steel strip 48 is provided on a portion of the outer periphery of the inner tubular portion 47. However, the present invention is not limited to the above embodiment. For example, the steel strip 48 may be provided around the entire outer periphery of the inner tubular portion 47.

[0099] (9) In the above embodiment, a configuration has been described in which a blocking member 52a is provided to block the upper end of the space between the inner tube portion 47 and the outer tube portion 46 at a position corresponding to the upper end of the inner tube portion 47. However, the present invention is not limited to the above embodiment. For example, if the lower end of the space between the inner tube portion 47 and the outer tube portion 46 is open, the blocking member 52a may be configured to block the lower end of the space between the inner tube portion 47 and the outer tube portion 46. Alternatively, a configuration may be adopted in which the blocking member 52a is not provided.

[0100] The configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments, unless a contradiction occurs. Furthermore, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these, and can be modified as appropriate within the scope of the purpose of the present invention.

[0101] The present invention can be used in a sugarcane harvester equipped with a separation device that separates the cut crop into impurities and harvested material.

[0102] 7: Separation device 20: Cooling device 21: Maintenance scaffolding (scaffolding) 41: Separation section 42: Hood section 44: Swing mechanism 45: Sliding section 46: Outer cylinder section 46a: First flange 47: Inner cylinder section (sliding section) 47a: Second flange (sliding section) 48: Steel strip 51: Projection section 52a: Closing member 61: First injection port 61A (61AF): Outer peripheral surface injection port (first injection port) 61B (61BF): Upper surface injection port (first injection port) 62: Second injection port 65: Fixing member 66: Tube (oil passage) 67: Conduit (oil passage) 70: Oil reservoir section

Claims

1. A sugarcane harvester comprising: a travelable traveling machine body; a separating device provided on the traveling machine body for separating harvested crops into impurities and harvested products; and a scaffold provided on the traveling machine body for enabling maintenance work of the separating device. The separating device includes: a separating unit for separating crops into impurities and harvested products; a hood unit for guiding the impurities separated by the separating unit to the outside of the traveling machine body; and a swing mechanism for swingably supporting the hood unit about a vertical swing axis. The swing mechanism includes: a sliding portion where a part of the hood unit slides when the hood unit swings; and a first injection port for injecting lubricating oil from the outside between a part of the hood unit and the sliding portion. The first injection ports are provided in plurality on the outer periphery of the sliding portion, and the sugarcane harvester further includes: a second injection port through which an operator standing on the scaffold can inject lubricating oil; and an oil passage for guiding the lubricating oil injected from the second injection port to the first injection port.

2. The sugarcane harvester according to claim 1, wherein each of the plurality of first injection ports is provided with the oil passage and the second injection port.

3. The sugarcane harvester according to claim 2, further comprising a fixing member to which the plurality of second injection ports are fixed.

4. The sugarcane harvester according to any one of claims 1 to 3, wherein the second injection port is provided at a front side portion of the swing mechanism in the longitudinal direction of the traveling machine body, and the scaffold is disposed in front of the swing mechanism in the longitudinal direction of the traveling machine body.

5. The sugarcane harvester according to claim 4, further comprising a cooling device for cooling a drive source in front of the separating device, and the scaffold also serves as a scaffold for maintaining the cooling device.

6. The sugarcane harvester according to any one of claims 1 to 5, further comprising an oil reservoir portion for accumulating lubricating oil between the sliding portion and the first injection port.

7. The sugarcane harvester according to any one of claims 1 to 6, wherein the sliding portion has an inner cylinder portion formed in a cylindrical shape at an upper side portion of the separating unit, the hood unit has an outer cylinder portion formed in a cylindrical shape at a lower side portion of the hood unit and contacting the outer periphery of the inner cylinder portion, and the lubricating oil injected into the first injection port is configured to flow between the inner cylinder portion and the outer cylinder portion.

8. The sugarcane harvester according to claim 7, wherein a closing member is provided at a position corresponding to the upper end of the inner cylinder portion to close the upper end of the space between the inner cylinder portion and the outer cylinder portion.

9. The hood portion has a first flange extending outward from the outer cylinder portion. The sliding portion extends outward from the inner cylinder portion and has a second flange on which the first flange slides. The first injection port is provided in the outer cylinder portion and the first flange. The sugarcane harvester according to claim 8.

10. The sugarcane harvester according to any one of claims 7 to 9, further comprising a strip-shaped strip steel provided on the outer periphery of the inner cylinder portion and extending along the outer periphery of the inner cylinder portion, and a protrusion extending from the outer cylinder portion toward the inner cylinder portion at a position below the strip steel.

11. The sugarcane harvester according to claim 10, wherein the strip steel is provided on a part of the outer periphery of the inner cylinder portion.

12. The sugarcane harvester according to claim 10 or 11, wherein the strip steel abuts against the hood portion, and a gap surrounded by the strip steel, the inner cylinder portion, and the outer cylinder portion is provided.

13. The sugarcane harvester according to any one of claims 10 to 12, wherein the first injection port is provided in the outer cylinder portion, and the strip steel is provided at a position corresponding to the location of the first injection port in the inner cylinder portion.

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