Sugar cane harvester

Abstract

To provide a sugar cane harvester that allows lubrication work for a sliding section of a hood part to be performed easily without requiring an operator to move around the outer periphery of the hood part.SOLUTION: A sugar cane harvester is equipped with a separation device 7 for separating reaped crops into admixtures and a harvest, and a foothold 21 that enables maintenance work for the separation device 7. The separation device 7 includes a swing mechanism 44 for swingably supporting a hood part 42 around a vertical swing shaft core. The swing mechanism 44 includes first injection ports (61,61A) for injecting lubricant from the outside between part of the hood part 42 and sliding parts (47,47a). A plurality of the first injection ports (61,61A) are provided in the outer periphery of the sliding parts (47,47a), and include second injection ports 62 from which an operator standing on the foothold 21 can inject lubricant, and oil passages (66,67) for guiding the lubricant injected from the second injection port 62 to the first injection port.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a sugarcane harvester equipped with a separation device that separates harvested crops into impurities and harvested products.

Background Art

[0002] As a conventional sugarcane harvester, for example, as described in Patent Document 1, there is one equipped with a separation device having a hood portion that separates harvested crops into impurities and harvested products and can change the discharge direction of the impurities.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

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

[0005] In such a separation device, there is a sliding portion around the lower end portion of the hood portion when the hood portion is rotated. Since wear and the like occur due to rotation at the sliding portion, it is necessary to frequently inject lubricating oil, and generally, a plurality of injection ports for injecting lubricating oil are provided at the sliding portion.

[0006] The hood portion of the separation device of the sugarcane harvester is large in configuration because it discharges impurities of sugarcane. Such a hood portion has injection ports for injecting lubricating oil arranged around the lower end portion of the hood portion.

[0007] Therefore, during the oil injection operation, the operator has to work around the outer periphery of the hood part, leaving room for improvement.

[0008] Therefore, an object of the present invention is to provide a sugarcane harvester that does not require the operator to go around the outer periphery of the hood part and can easily perform an oil injection operation on the sliding part of the hood part.

Means for Solving the Problems

[0009] The sugarcane harvester of the present invention includes a travelable travel body, a separation device provided on the travel body for separating the harvested crop into impurities and harvested products, and a scaffold provided on the travel body for performing maintenance work on the separation device. The separation device includes a separation part for separating the crop into impurities and harvested products, a hood part for guiding the impurities separated by the separation part to the outside of the travel body, and a swing mechanism for swingably supporting the hood part around a vertically oriented swing axis. The swing mechanism has a sliding part where a part of the hood part slides when the hood part swings, and a first injection port for injecting lubricating oil from the outside between a part of the hood part and the sliding part. The first injection ports are provided in plurality on the outer periphery of the sliding part, and there are provided 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.

[0010] According to the present invention, when the operator injects lubricating oil from the scaffold into the second injection port, it becomes possible to inject lubricating oil between a part of the hood part, which is the oil injection location, and the sliding part through the first injection port. Therefore, the operator does not need to go around the outer periphery of the hood part and can easily perform an oil injection operation on the sliding part of the hood part.

[0011] In the present invention, it is preferable that the oil passage and the second injection port are provided for each of the plurality of first injection ports.

[0012] According to this configuration, for each first inlet, a second inlet and an oil passage are provided respectively. Therefore, an operator can adjust the appropriate injection amount of lubricating oil for each first inlet by adjusting the injection amount of lubricating oil into the second inlet, etc., and can perform the oil injection operation appropriately.

[0013] In the present invention, it is preferable that a fixing member for fixing a plurality of the second inlets is provided.

[0014] According to this configuration, the second inlets are fixed in a state of being grouped together by the fixing member. Therefore, an operator can perform an oil injection operation on the second inlets that are stable because they are fixed to the fixing member, and can perform the oil injection operation more easily. In addition, since the second inlets are arranged at a grouped position, it is possible to shorten the movement time of the operator, and it is possible to perform the oil injection operation more simply.

[0015] In the present invention, it is preferable that the second inlets are provided at the front side portion of the swing mechanism in the front-rear direction of the traveling body, and the scaffold is arranged in front of the swing mechanism in the front-rear direction of the traveling body.

[0016] According to this configuration, the second inlets and the scaffold are arranged in the same direction with respect to the swing mechanism. As a result, an operator standing on the scaffold can have easier access to the second inlets.

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

[0018] According to this configuration, it becomes possible to perform an oil injection operation on the separation device (second injection port) by using the maintenance scaffold of the cooling device. As a result, since it is not necessary to separately provide a scaffold for the oil injection operation into the second injection port of the separation device, it is possible to reduce parts and the like, and it is possible to reduce costs and man-hours.

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

[0020] According to this configuration, when lubricating oil is supplied to the second injection port, the lubricating oil is accumulated in the oil reservoir portion. Even after the oil supply operation, the lubricating oil is supplied from the oil reservoir portion between a part of the hood portion and the sliding portion. As a result, it is possible to reduce the number of oil injection operations.

[0021] In the present invention, it is preferable that the sliding portion has an inner cylinder portion formed in a cylindrical shape on an upper portion of the separation portion, and the hood portion has an outer cylinder portion formed in a cylindrical shape that contacts an outer periphery of the inner cylinder portion on a lower portion of the hood 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.

[0022] According to this configuration, the outer cylinder portion, which is a part of the hood portion, slides on the inner cylinder portion, which is the sliding portion. That is, since the outer cylinder portion slides along the outer periphery of the inner cylinder portion having a cylindrical shape, it is necessary to perform an oil injection operation on a wide sliding portion along the outer periphery of the inner cylinder portion. Here, an operator standing on the scaffold injects lubricating oil into the second injection port, and the lubricating oil flows between the inner cylinder portion and the outer cylinder portion through the first injection port. That is, by injecting lubricating oil into the second injection port by the operator, it becomes possible to easily perform an oil injection operation on a wide sliding portion along the outer periphery of the inner cylinder portion.

[0023] In the present invention, it is preferable that a closing member that closes an upper end of a space between the inner cylinder portion and the outer cylinder portion is provided at a position corresponding to an upper end portion of the inner cylinder portion.

[0024] According to this configuration, it is possible to reduce the entry of dust and the like from above into the space between the inner cylinder portion and the outer cylinder portion.

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

[0026] According to this configuration, it is possible to perform an oil injection operation through the first injection port by injecting lubricating oil into the second injection port in both the space between the inner cylinder portion and the outer cylinder portion and the space between the first flange and the second flange.

[0027] In the present invention, it is preferable to include a strip-shaped steel strip 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 steel strip.

[0028] According to this configuration, for example, even if the hood portion attempts to move upward due to shaking or the like during running, the protrusion is caught by the steel strip. As a result, it is possible to prevent the hood portion from falling off from the swing mechanism.

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

[0030] According to this configuration, the steel strips are arranged at intervals on the outer periphery of the inner cylinder portion. Lubricating oil accumulates between adjacent steel strips, and the lubricating oil is supplied from the location where the lubricating oil accumulates between a part of the hood portion and the sliding portion. As a result, it is possible to reduce the number of oil injection operations.

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

[0032] According to this configuration, a structure is formed in which lubricating oil accumulates in the gap surrounded by the strip steel, the inner cylinder part, and the outer cylinder part, and the lubricating oil is supplied from the location where the lubricating oil accumulates between a part of the hood part and the sliding part. As a result, it becomes possible to reduce the number of oil injection operations.

[0033] In the present invention, it is preferable that the first injection port is provided in the outer cylinder part, and the strip steel is provided at a location corresponding to the location of the first injection port in the inner cylinder part.

[0034] According to this configuration, a structure is formed in which the lubricating oil directly flows into the space between the strip steel and the hood part from the first injection port. Therefore, it becomes possible to perform the oil injection operation efficiently.

Brief Description of the Drawings

[0035]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0036] Embodiments for carrying out the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of arrow F in the figure is defined as "front", the direction of arrow B is defined as "rear", the direction of arrow L is defined as "left", and the direction of arrow R is defined as "right". Also, the direction of arrow U in the figure is defined as "up", and the direction of arrow D is defined as "down".

[0037] 〔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 and capable of steering operation, 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.

[0038] As shown in Figs. 1 and 2, the traveling body is provided with a driver's cab 3, a cutting unit 4, a topper 5, a conveying device 6, a separating device 7, a conveyor 8, an engine 9, and the like.

[0039] The cutting unit 4 cuts the crops (sugarcane) planted in the field. The topper 5 cuts the upper leaf part of the crops. The conveying device 6 conveys the crops cut by the cutting unit 4 rearward and upward. The separating device 7 is provided at the rear part of the traveling body and separates the crops conveyed by the conveying device 6 into impurities and harvested products (sugarcane). The conveyor 8 is connected to the rear part of the traveling body in a state where it can pivot around the vertical axis X1 with the lower end as a fulcrum, receives the harvested products from the separating device 7, conveys them obliquely upward, and discharges them outside the machine. The engine 9, which is the driving source, supplies power to each part of the machine.

[0040] The driver's cab 3 is provided at a high position in the front part 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, and the like are provided. Doors that can be opened and closed are provided on each of the left and right side surfaces of the cabin 10.

[0041] 〔Configuration around the engine〕 As shown in Figs. 1 and 2, the engine 9 is provided at the central position in the left - right direction of the machine body, behind the driver's cab 3 and above the conveying device 6.

[0042] A cooling device 20 for cooling the engine 9 is provided. The cooling device 20 is provided in a state where it is located behind the driver's cab 3 and above the rear part side of the conveying device 6. Although not described in detail here, as the cooling device 20, a plurality of devices such as a cooling fan and a radiator cooled by the cooling fan are provided, and these are arranged side by side in the front - rear direction.

[0043] Behind the cooling device 20 in the traveling body, a maintenance scaffold 21 (corresponding to the "scaffold" of the present invention) for the cooling device 20 is provided. The maintenance scaffold 21 is configured to be available as a scaffold when an operator performs maintenance on the cooling device 20.

[0044] A dustproof cover 22 is provided on the rear side of the cooling device 20. The dustproof cover 22 has a porous mesh body on each of its left and right side surfaces, rear surface, and upper surface. With this configuration, it is possible to prevent dust from entering the inside of the dustproof cover 22 while sucking outside air through the dustproof cover 22.

[0045] As shown in FIG. 4, the dustproof cover 22 is configured to be switchable between a closed state covering the cooling device 20 and the maintenance scaffold 21 and an open state opening the cooling device 20 and the maintenance scaffold 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 body.

[0046] By opening the dustproof cover 22, the operator can perform maintenance work on the cooling device 20 using the maintenance scaffold 21.

[0047] 〔Configuration of the mowing unit and the conveying device〕 As shown in FIG. 1, the mowing unit 4 is provided at the front lower part of the traveling body. The mowing unit 4 is provided with left and right weed separating devices 11 and a mowing header 12. The left and right weed separating devices 11 separate and guide the harvest targets among the standing crops. The mowing header 12 cuts the crops planted in the field and feeds them backward. The left and right weed separating devices 11 are provided with a vertically oriented weed separating rotating body 13 that is rotationally driven.

[0048] The cutting header 12 is provided so as to be continuous with the rear sides of the left and right grass dividing devices 11. Rollers are provided within the region sandwiched by the left and right side wall portions of the cutting header 12, and the rollers scrape the crops backward while pushing them down so as to be in a forward-fallen posture. Further, the cutting header 12 is provided with a cutting device 15 for cutting the base of the crop stalks. The cutting device 15 is located behind the left and right grass dividing devices 11. The cutting device 15 is provided with a pair of left and right rotary cutters, and the rotary cutters rotate around the vertical axis to cut the base of the crop stalks.

[0049] The conveyance start end portion of the conveyance device 6 is continuous with the rear side of the cutting device 15. The conveyance device 6 is provided in a rearwardly inclined posture so as to convey the crops toward the upper rear of the machine body. In the conveyance device 6, a conveyance path is formed by a substantially rectangular cylindrical structure. Scraping rotators are provided on both the upper and lower sides of the transfer path in the conveyance device 6. The scraping rotators are provided at appropriate intervals in the conveyance direction. The scraping rotators on both the upper and lower sides are rotationally driven in opposite directions to each other. The long crops cut by the cutting unit 4 are conveyed rearward while being sandwiched between the scraping rotators on both the upper and lower sides.

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

[0051] 〔Configuration of Separation Device〕 As shown in FIGS. 3 and 4, the separation device 7 separates and discharges outward fine stem debris, leaf fragments, and other impurities contained in the crops discharged from the conveyance end portion of the conveyance device 6 by the ventilation action of a fan 43 that rotates around the vertical axis X1.

[0052] Immediately below the separating device 7 and rearward and downward of the rear end portion of the conveying device 6, a hopper 19 (see FIG. 1) is provided to receive the crops discharged downward from the conveying device 6. The crops received by the hopper 19 are guided to the starting end portion of the conveyor 8.

[0053] As shown in FIG. 1, the conveyor 8 is supported by a conveyor support frame body 17 provided at the rear portion of the traveling body, and extends from the rear portion of the traveling body upward and outward of the body. The conveyor 8 locks and conveys the crops and discharges them outward from the conveying end portion.

[0054] As shown in FIGS. 3 and 4, the separating device 7 is provided with a separating portion 41, a hood portion 42, and a fan 43.

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

[0056] The separating portion 41 is formed in a cylindrical shape in plan view. The lower end portion of the separating portion 41 is open downward. The separating portion 41 separates the harvested crops into impurities and harvested products, guides the impurities upward, and guides the harvested products downward.

[0057] The hood portion 42 is provided with a discharge port 42a for discharging (guiding) the impurities separated by the separating portion 41 to the outside of the traveling body.

[0058] The stalks of the crops are cut by the cutting rollers 16, 16 (see FIG. 1) at the conveying end portion of the conveying device 6 and then introduced into the inside of the separating portion 41. The cutting rollers 16, 16 are feeding devices for feeding the crops into the separating portion 41.

[0059] The fan 43 is provided inside the separation part 41 and rotates around the vertical axis X1 passing 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. The crops introduced into the separation part 41 are subjected to the suction action of the fan 43, and relatively light impurities such as fine stem fragments and leaf fragments are sucked upward. Then, the impurities pass through the fan 43 and are discharged outward from the hood part 42 through the discharge port 42a.

[0060] Note that the hood part 42 is provided above the separation part 41 so as to be swingable around the vertical axis X1 by a swing mechanism 44 described later, and the discharge direction of the impurities can be changed. The vertical axis X1 is also the swing axis of the hood part 42. The left and right regulating members 31 are provided on the hood part 42. When the hood part 42 swings, the regulating members 31 swing together with the hood part 42. When the regulating member 31 abuts against the abutting member 32, further swinging of the hood part 42 is restricted.

[0061] The harvest that is heavier than the impurities falls downward as it is without being sucked by the fan 43. The fallen harvest is received by the hopper 19 as described above and guided to the conveying start end of the conveyor 8.

[0062] 〔Configuration of the swing mechanism〕 As shown in FIGS. 3 and 4, the swing mechanism 44 is provided at the upper end portion of the separation part 41. The swing mechanism 44 has a sliding part 45 where the lower end portion of the hood part 42 slides when the hood part 42 swings.

[0063] An outer cylinder part 46 formed in a cylindrical shape is formed at the lower end portion of the hood part 42. Further, a first flange 46a extending outward from the lower end of the outer cylinder part 46 is formed.

[0064] An inner cylinder part 47 formed in a cylindrical shape is formed as the sliding part 45 on the upper side portion of the separation part 41. Further, a second flange 47a extending outward from the inner cylinder part 47 is formed as the sliding part 45.

[0065] In this embodiment, the inner cylinder portion 47 has a strip-shaped steel strip 48 provided on the outer periphery of the inner cylinder portion 47 and extending along the outer periphery of the inner cylinder portion 47. Four steel strips 48 are provided and are arranged at intervals along the outer periphery of the inner cylinder portion 47 on the front side portion, rear side portion, right side portion, and left side portion of the inner cylinder portion 47. With this configuration, the steel strip 48 is provided on a part of the outer periphery of the inner cylinder portion 47.

[0066] The outer periphery of the inner cylinder portion 47, that is, in this embodiment, the steel strip 48 is configured to abut against the outer cylinder portion 46 of the hood portion 42. In FIGS. 4 and 5, although a gap is shown between the steel strip 48 and the outer cylinder portion 46, for example, when the hood portion 42 swings, the hood portion 42 may move slightly relative to the steel strip 48 in the front-rear direction and left-right direction of the traveling airframe. As a result, a part of the steel strip 48 abuts against the outer cylinder portion 46.

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

[0068] With the above configuration, when the hood portion 42 swings around the vertical axis X1, the steel strip 48 slides on the inner surface of the outer cylinder 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 cylinder portion 47 and the second flange 47a as the sliding portion 45. With the above configuration, the swing mechanism 44 supports the hood portion 42 so as to be swingable around the axis X1 which is the vertical swing axis.

[0069] 〔Configuration of the space between the inner cylinder portion and the outer cylinder portion〕 As shown in FIG. 5, the steel strip 48 is provided on the upper side portion of the outer peripheral surface of the inner cylinder portion 47 and is arranged at a position spaced a certain distance upward from the second flange 47a. Further, the steel strip 48 is also arranged at a state spaced a certain distance from the upper end of the inner cylinder portion 47. With this configuration, a space G (gap) surrounded by the inner cylinder portion 47, the outer cylinder portion 46, and the steel strip 48 is formed in the upper side portion and the lower side portion above the steel strip 48 between the inner cylinder portion 47 and the outer cylinder portion 46.

[0070] Below the strip steel 48 in the space G (gap), a bolt Bo inserted through a hole provided in the outer cylinder part 46 is inserted. Among the bolts Bo, the part extending from the inner surface of the outer cylinder part 46 toward the inner cylinder part 47 is configured as a protrusion 51. With this configuration, even if the outer cylinder part 46 of the hood part 42 moves in the direction (upward direction) of coming off from the inner cylinder part 47, the protrusion 51 comes into contact with the strip steel 48. As a result, it becomes possible to prevent the hood part 42 from coming off from the inner cylinder part 47.

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

[0072] 〔Configuration of the oil injection mechanism〕 As shown in FIGS. 4 to 6, the swing mechanism 44 is provided with an oil injection mechanism for injecting lubricating oil between the outer cylinder part 46 and the inner cylinder part 47 (sliding part 45) formed at the lower end part of the hood part 42, and between the first flange 46a and the second flange 47a (sliding part 45). Here, generally, the operation of injecting lubricating oil is performed in a state where the discharge port 42a of the hood part 42 faces rearward in the front-rear direction of the traveling body. Hereinafter, as shown in FIGS. 1 and 2, the description will be based on the state where the discharge port 42a of the hood part 42 faces rearward in the front-rear direction of the traveling body.

[0073] As the swing mechanism 44, there are provided a first injection port 61 for injecting lubricating oil from the outside between the outer cylinder portion 46 (first flange 46a) and the inner cylinder 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) for guiding the lubricating oil injected from the second injection port 62 to the first injection port 61.

[0074] 〔Configuration of the first injection port〕 As shown in FIG. 4, in the present embodiment, as the first injection port 61, eight outer peripheral surface injection ports 61A and four upper surface injection ports 61B are provided. The eight outer peripheral surface injection ports 61A are provided on the outer peripheral surface of the outer cylinder portion 46 and are arranged at substantially equal intervals along the outer periphery of the outer cylinder portion 46. The four upper surface injection ports 61B are provided on the upper surface of the first flange 46a and are arranged at substantially equal intervals along the outer periphery of the outer cylinder portion 46.

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

[0076] An injection hole 64 is formed at a position on the first flange 46a where the upper surface injection port 61B is arranged. The lubricating oil injected into the upper surface injection port 61B is injected into the injection hole 64. That is, the injection hole 64 functions as an oil reservoir portion 70 where lubricating oil accumulates.

[0077] With the above configuration, a configuration is provided in which an oil reservoir portion 70 where lubricating oil accumulates 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 cylinder portion 46 flows between the inner cylinder portion 47 and the outer cylinder portion 46 via the oil reservoir portion 70, and further flows between the strip steel 48 and the outer cylinder portion 46.

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

[0079] As shown in FIG. 6, when the discharge port 42a of the hood portion 42 faces rearward in the front-rear direction of the traveling body, the eight outer peripheral surface injection ports 61A provided in the outer cylinder portion 46 are arranged at positions corresponding to the arrangement locations of the respective strip steels 48. Specifically, in the strip steel 48, the outer peripheral surface injection ports 61A are respectively arranged at positions corresponding to both end portions in the length direction of the strip steel 48. In other words, the strip steel 48 is provided at a position corresponding to the position where the outer peripheral surface injection port 61A is arranged in the inner cylinder portion 47.

[0080] 〔Configuration of the second injection port〕 On the maintenance scaffold 21 side (front side) of the outer periphery of the outer cylinder portion 46, two fixing members 65 for fixing the second injection port 62 are provided. The fixing members 65 are arranged by being allocated left and right in the left-right direction of the traveling body with respect to the maintenance scaffold 21. Four second injection ports 62 are respectively fixed to the left and right fixing members 65.

[0081] FIG. 6 shows a developed view of the left side of the outer cylinder portion 46. Hereinafter, regarding the four outer peripheral surface injection ports 61A shown in FIG. 6, starting from the front (left in FIG. 6) in order, they are referred to as the first outer peripheral surface injection port 61A, the second outer peripheral surface injection port 61A, the third outer peripheral surface injection port 61A, and the fourth outer peripheral surface injection port 61A. Also, regarding the two upper surface injection ports 61B shown in FIG. 6, starting from the front (left in FIG. 6) in order, they are referred to as the first upper surface injection port 61B and the second upper surface injection port 61B. Although not shown, the same applies to the right side of the outer cylinder portion 46.

[0082] As shown in FIG. 6, three of the second inlets 62 fixed to the left fixing member 65 are on the side opposite to the maintenance scaffold 21 (rear side) with respect to the left fixing member 65 and are located on the left side in the left-right direction of the traveling body. They are connected to three outer peripheral surface inlets 61A (the second to fourth outer peripheral surface inlets 61A) by a tube 66.

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

[0084] Although not shown, three of the second inlets 62 fixed to the right fixing member 65 are on the side opposite to the maintenance scaffold 21 (rear side) with respect to the right fixing member 65 and are located on the right side in the left-right direction of the traveling body. They are connected to three outer peripheral surface inlets 61A (the second to fourth outer peripheral surface inlets 61A) by a tube 66.

[0085] Although not shown, the remaining one of the second inlets 62 fixed to the right fixing member 65 is on the side opposite to the maintenance scaffold 21 (rear side) and is located on the right side in the left-right direction of the traveling body. It is connected to one upper surface inlet 61B (the second upper surface inlet 61B) by a tube 66.

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

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

[0088] With the above configuration, the second inlet 62 is configured to be provided in the front portion of the swing mechanism 44 in the front-rear direction of the traveling body. That is, all the second inlets 62 are arranged on the side of the maintenance scaffold 21 disposed in front of the swing mechanism 44. As a result, an operator standing on the maintenance scaffold 21 can perform the operation of injecting lubricating oil into the second inlet 62.

[0089] Further, the maintenance scaffold 21 is configured to serve as a scaffold for an operator to perform the operation of injecting lubricating oil into the second inlet 62 and a scaffold for maintenance of the cooling device 20 located in front of the separation device 7.

[0090] 〔Alternative Embodiment〕 Hereinafter, an alternative embodiment in which changes are made to the above embodiment will be exemplified.

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

[0092] (2) In the above-described embodiment, the configuration in which the first inlet 61 to which the tube 66 is connected and the first inlet 61 to which the conduit 67 is connected are provided has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, all the first inlets 61 may be configured such that the tube 66 instead of the conduit 67 is connected thereto.

[0093] (3) In the above-described embodiment, the configuration in which the fixing member 65 for fixing the second inlet 62 is provided has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the configuration may be such that the fixing member 65 is not provided.

[0094] (4) In the above-described embodiment, the second inlet 62 is provided at the front side portion of the swing mechanism 44 in the front-rear direction of the traveling body, and the maintenance scaffold 21 is disposed in front of the swing mechanism 44, which has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the second inlet 62 may be provided at the rear side portion of the swing mechanism 44 in the front-rear direction of the traveling body, and the maintenance scaffold 21 may be disposed behind the swing mechanism 44.

[0095] (5) In the above-described embodiment, the maintenance scaffold 21 serves as both a scaffold for an operator to perform an operation of injecting lubricating oil into the second inlet 62 and a scaffold for maintenance of the cooling device 20, which has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, a configuration may be provided in which, separately from the maintenance scaffold 21 for maintenance of the cooling device 20, a scaffold for an operator to perform an operation of injecting lubricating oil into the second inlet 62 is provided.

[0096] (6) In the above-described embodiment, the configuration in which the oil reservoir portion 70 in which lubricating oil accumulates is provided between the sliding portion 45 and the first inlet 61 has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the oil reservoir portion 70 may not be provided between the sliding portion 45 and the first inlet 61, and the lubricating oil may be configured to flow directly between the strip steel 48 and the outer cylinder portion 46, between the first flange 46a and the second flange 47a, and the like.

[0097] (7) In the above-described embodiment, the configuration in which the strip steel 48 is provided on the outer periphery of the inner cylinder portion 47 has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the inner cylinder portion 47 may slide on the inner surface of the outer cylinder portion 46 without the strip steel 48.

[0098] (8) In the above-described embodiment, the configuration in which the strip steel 48 is provided on a part of the outer periphery of the inner cylinder portion 47 has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, the strip steel 48 may be provided over the entire outer periphery of the inner cylinder portion 47.

[0099] (9) In the above-described embodiment, the configuration in which the closing member 52a that closes the upper end of the space between the inner cylinder portion 47 and the outer cylinder portion 46 is provided at a position corresponding to the upper end portion of the inner cylinder portion 47 has been described as an example. However, the present invention is not limited to the above-described embodiment. For example, when the lower end of the space between the inner cylinder portion 47 and the outer cylinder portion 46 is open, the closing member 52a may be configured to close the lower end of the space between the inner cylinder portion 47 and the outer cylinder portion 46. Also, the configuration may be such that the closing member 52a is not provided.

[0100] In addition, the configurations disclosed in the above-described embodiments (including other alternative embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction occurs. Further, the embodiments disclosed in this specification are examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified within the scope not departing from the object of the present invention.

Industrial Applicability

[0101] The present invention can be used in a sugarcane harvester equipped with a separating device that separates harvested crops into impurities and harvested products.

Explanation of Reference Numerals

[0102] 7: Separating device 20: Cooling device 21: Maintenance scaffold (scaffold) 41: Separating section 42: Hood section 44: Oscillating mechanism 45: Sliding part 46: Outer cylinder part 46a: First flange 47: Inner cylinder part (sliding part) 47a: Second flange (sliding part) 48: Steel strip 51: Protrusion 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: Duct (oil passage) 70: Oil sump part

Claims

1. A self-propelled vehicle body capable of traveling, a separating device provided on the self-propelled vehicle body for separating the harvested crop into impurities and harvested products, a scaffold provided on the self-propelled vehicle body for enabling maintenance work of the separating device, and the separating device includes a separating section for separating the crop into impurities and harvested products, a hood section for guiding the impurities separated by the separating section to the outside of the self-propelled vehicle body, a swing mechanism for swingably supporting the hood section about a vertically oriented swing axis, and has the swing mechanism includes a sliding section where a part of the hood section slides when the hood section swings, a first injection port for injecting lubricating oil from the outside between a part of the hood section and the sliding section, and has a plurality of the first injection ports are provided on the outer periphery of the sliding section, a second injection port through which an operator standing on the scaffold can inject lubricating oil, a sugarcane harvester provided with 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 the oil passage and the second injection port are provided at each of the plurality of the first injection ports.

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

4. The second injection port is provided at a front portion of the swing mechanism in the front-rear direction of the self-propelled vehicle body, The scaffold is disposed in front of the swing mechanism in the front-rear direction of the self-propelled vehicle body. The sugarcane harvester according to any one of claims 1 to 3.

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

6. The sugarcane harvester according to claim 1, further comprising an oil sump portion where lubricating oil accumulates between the sliding section and the first injection port.

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

8. The sugarcane harvester according to claim 7, further comprising a closing member for closing an upper end of a space between the inner cylinder portion and the outer cylinder portion at a position corresponding to an upper end portion of the inner 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 sugarcane harvester according to claim 8, wherein the first injection port is provided in the outer cylinder portion and the first flange.

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

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

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

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

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