JP2021040564A - Sugarcane harvester - Google Patents

Abstract

To address the request to highly efficiently perform maintenance work of an engine and periphery thereof, while comprising the engine in such a manner as to compactly form a machine body.SOLUTION: A sugarcane harvester comprises: a harvesting section 4 for harvesting standing crops; a feeder 5 in a posterosuperiorly-inclined posture, for conveying the harvested crops upward and rearward a machine body; a separation device 6 connected to the rear part of the conveyance device 5 and removing dust, etc. of the conveyed crops; an operation section 3 located on the upper side of the conveyance device 5; an engine 8 located rearward the operation section 3 and upward the conveyance device 5; and a working deck 90 located rearward the engine 8 and upward the conveyance device 5.SELECTED DRAWING: Figure 2

Description

The present invention relates to a sugar cane harvester that harvests a crop (sugar cane) that is being planted while the aircraft is running.

The sugarcane harvester is equipped with a harvesting section (divider, base cutter, etc.) for harvesting crops at the lower front of the machine, and a transport device with a backward tilted posture that transports the harvested crops upward after the machine. ing. The harvested product is transported upward and cut to a length that is easy to handle, and then, as a post-treatment, for example, leaf debris and other dust are removed by a blower and discharged to the outside of the machine by a discharge conveyor. It is configured in. Conventionally, an engine that supplies power to each part of the machine body has been provided on the upper side of the transport device (see, for example, Patent Document 1).

JP-A-2017-99314

In the above-mentioned conventional configuration, by deploying the engine by utilizing the empty space on the upper side of the transport device in the rearward tilting posture, the outer shape of the machine is made compact by eliminating the protrusion to the rear side outside and the upper side outside of the machine. It is possible to fit it. However, since the engine is mounted on the upper side of the transport device, the engine is located at a high position away from the ground. With such a configuration, when performing maintenance work such as inspection and replenishment of oils for the engine and the equipment around the engine, it is difficult for the worker to perform the work as it is from the ground. Therefore, it is troublesome to separately prepare another workbench such as a stepladder and lean out from the workbench to the inside of the machine to perform the work.

Therefore, it has been desired that the engine can be provided so that the outer shape of the airframe can be compactly accommodated, and that the maintenance work around the engine can be efficiently performed.

The characteristic configuration of the sugarcane harvester according to the present invention is provided in the lower front part of the machine body, and a harvesting section for harvesting the planted crops and a harvested product harvested in the harvesting section are transported upward after the machine body. A transport device in an inclined rearward posture, a post-treatment device connected to the rear portion of the transport device and performing post-treatment of the harvested product transported by the transport device, and an operating unit located above the transport device. The point is that an engine located behind the driving unit and above the transport device and a work deck located behind the engine and above the transport device are provided.

According to the present invention, the engine is provided in a state of being located on the rear side of the driving unit and above the conveying device. That is, it is possible to effectively utilize the empty area above the transport device and deploy the engine in a state where there is little protrusion to the outside. Then, when performing maintenance work around the engine, the worker can perform the work using the work deck.

The work deck is located on the rear side of the engine and high above the conveyor, so it is close to the engine and peripherals. As a result, the worker on the work deck can easily access the engine and peripheral devices, and can easily perform the work without any hassle.

Therefore, it is possible to equip the engine so that the outer shape of the machine body fits compactly, and it is possible to efficiently perform maintenance work around the engine.

In the present invention, a radiator is provided on one side in the left-right direction of the engine, a fan cooling type cooling device is provided on one side in the left-right direction of the work deck and behind the radiator, and the other side in the left-right direction of the work deck. It is preferable that the side is provided with a step portion for getting into the work deck from outside the machine.

According to this configuration, the operator can easily get into the work deck from the outside of the machine body on the other side in the left-right direction by using the step portion without separately preparing a workbench such as a stepladder. Then, after getting into the work deck, it is possible to perform maintenance work on the radiator and the cooling device.

In the present invention, it is preferable that the engine cover covering the engine is provided from the arrangement portion of the radiator to the other side portion in the left-right direction of the engine.

According to this configuration, since the engine is covered by the engine cover in a wide range from the radiator arrangement location to the other side in the left-right direction, there is a disadvantage that floating dust generated during the harvesting work falls on the engine. Can be avoided.

In the present invention, the engine cover is provided with a side cover portion that is located on the side opposite to the radiator with respect to the engine and covers the engine from the side, and a ventilation portion is provided on the side cover portion. It is preferable that it is formed.

According to this configuration, as the cooling air for cooling the radiator flows in the engine cover, the high-temperature hot air around the engine is also guided, and the ventilation portion formed in the side cover portion. It can be discharged to the outside through.

In the present invention, it is preferable that the engine cover is provided with a rear cover portion that is located behind the engine and covers the engine from the rear, and a ventilation portion is formed in the rear cover portion.

According to this configuration, as the cooling air that cools the radiator flows in the engine cover, it also guides the hot air around the engine to the outside through the ventilation part formed in the rear cover part. Can be discharged to.

In the present invention, the engine is provided with a side cover portion that is located on the side opposite to the radiator with respect to the engine and covers the engine from the side, and a side cover portion that is located behind the engine. It is preferable that a rear cover portion that covers the rear cover portion is provided, and at least one of the side cover portion and the rear cover portion is removable.

According to this configuration, maintenance work related to the engine can be performed by removing at least one of the side cover portion and the rear cover portion.

In the present invention, the engine cover is provided with an upper cover portion that is located above the engine and covers the engine from above, and an exhaust pipe that exhausts the exhaust of the engine to the outside provides the upper cover portion. The engine cover is provided with an exhaust pipe cover portion that penetrates and extends upward and covers a protruding portion of the exhaust pipe that projects upward from the upper cover portion, and the exhaust pipe cover portion is the upper cover portion. It is preferable that it is supported by.

According to this configuration, the exhaust pipe is extended upward to exhaust the engine exhaust gas from a high position, so that the exhaust gas can be easily dissipated. Further, by covering the exhaust pipe with the exhaust pipe cover, it is easy to prevent the exhaust pipe from being exposed to the outside and adversely affecting the surroundings. Since the area of the upper cover other than the exhaust pipe cover portion is located at a low position, the periphery of the engine can be efficiently covered, and the engine cover does not become unnecessarily large.

In the present invention, the engine cover is provided with a cabin that covers the driving portion, a window portion is provided at the rear upper portion of the cabin, and the upper cover portion is provided at a position lower than the lower end of the window portion. It is preferable that a front cover portion for partitioning the engine and the cabin is provided.

According to this configuration, the operator on board the driver can visually check the rear side from the inside of the cabin through the window without being disturbed by the engine cover. Further, the front cover portion can prevent the hot air in the engine room from being transmitted to the driving portion.

In the present invention, the first work deck on which an operator can get on the work deck from the outside toward the inward side in the left-right direction, and the first work deck on the inward side in the left-right direction with respect to the first work deck. A second work deck provided at a position lower than the work deck is provided, a power transmission mechanism for transmitting the power of the engine to the rear of the machine body is provided, and the power transmission mechanism is located below the first work deck. Moreover, it is preferable that the second work deck is passed through a higher position than the second work deck.

According to this configuration, the worker can get into the first work deck from the outside and move to the second work deck on the inner side to perform maintenance work. The power transmission mechanism is provided at the same position as the output unit of the engine, but the first work deck allows the power transmission mechanism to be moved to a position where maintenance is easy without disturbing the operation of the power transmission mechanism.

It is a left side view of a sugar cane harvester. It is a top view of a sugar cane harvester. It is a right side view of a sugar cane harvester. It is a side view of the airframe frame. It is a top view of the airframe frame. It is a perspective view of the state which the feeder is attached to the fuselage frame. It is a side view of the state where each device is assembled to the airframe frame. It is a top view of the state in which each device is assembled to the airframe frame. It is a bottom view of the transmission device mounting diagram for traveling. It is a perspective view of a work deck and an engine cover. It is a rear view of a work deck and an engine cover. It is a vertical sectional side view of a driving part. It is a front view of the fuel tank arrangement part. It is a top view of the rear wheel fender. It is a perspective view of a rear wheel fender.

Hereinafter, embodiments of the sugar cane harvester according to the present invention will be described with reference to the drawings.

〔overall structure〕
1 to 3 are views showing the entire sugarcane harvester, FIG. 1 is a left side view, FIG. 2 is a plan view, and FIG. 3 is a right side view. In this embodiment, the directions indicated by reference numerals (F) in FIGS. 1, 2 and 3 are the front side of the machine body, and the directions indicated by the reference numerals (B) are the rear side of the machine body. The direction indicated by the reference numeral (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by the reference numeral (R) in FIG. 2 is the right side of the aircraft.

The sugarcane harvester is provided with left and right front wheels 1 that can be steered and left and right rear wheels 2 that are non-steerable and rotationally driven, and can travel by driving the rear wheels 2. It is configured to run on wheels. The machine is equipped with an operation unit 3, a harvesting unit 4 for harvesting the planted crops, a feeder 5 as a transport device for transporting the harvested product harvested by the harvesting unit 4 upward and backward, and a feeder 5. A separation device 6 that separates the transported harvested material (sugar millet) and contaminants, a discharge conveyor 7 that transports and discharges the harvested product separated from the contaminants diagonally upward to the outside of the machine, and the machine body. A driving unit 9 having an engine 8 or the like for supplying power to each unit, and a traveling transmission device 10 for transmitting the power of the engine 8 to the left and right rear wheels 2 are provided. An airframe frame 11 that supports the entire airframe is provided, and each of the above devices is supported by the airframe frame 11. The airframe frame 11 will be described later.

An arc-shaped fender 12 along the outer peripheral portion of the rear wheel 2 is provided on the front side of the rear wheel 2. As shown in FIGS. 14 and 15, the fender 12 is provided with a square tubular frame 13 bent in an arc shape in a side view on both the left and right sides, and the plate 14 is connected over the left and right frame 13. ing. The front and rear ends of the fender 12 are supported by the airframe frame 11. The front end of the fender 12 on the right side shown in FIGS. 14 and 15 is supported by the third frame portion 45 of the airframe frame 11, and the rear end portion is supported by the radiator support portion 48a of the airframe frame 11.

The driving unit 3 is provided at a high position in the front part of the machine body, and the periphery is covered by the cabin 15. Although not shown, the cabin 15 is provided with a driver's seat 16, a steering handle 17, an operation panel (not shown), and the like. The left and right side surface portions of the cabin 15 are formed as door portions that can be opened and closed, respectively.

The harvesting section 4 is provided in the lower front part of the machine body. The harvesting unit 4 is provided with left and right weeding devices 19 for weeding and guiding the harvested crops among the planted crops, and a cutting header 20 for cutting the crops to be planted in the field and sending them backward.

The left and right weeding devices 19 are provided with a holding frame 21, a weeding rotating body 22 in a vertical posture in a backward tilted state, a hydraulic weeding motor 23 for rotating and driving the weeding rotating body 22 and the like. .. The weed rotating body 22 is provided with a spiral guide body 22b on the outer peripheral portion of the cylindrical tubular body 22a, and is rotated by a weeding motor 23 to raise the crop to be cut in a vertical posture while guiding the weeding. invite. Further, the left and right weeding devices 19 are supported so as to be able to move up and down via a link mechanism 24.

The cutting header 20 causes the crop to fall forward in the area sandwiched between the left and right side wall portions 26 (see FIG. 2) provided so as to be connected to the rear of the left and right weeding devices 19 and the left and right side wall portions 26. It is provided with a scraping roller 27 that pushes down the crop so as to push it down and scrapes it backward, and a cutting device 28 that cuts the root of the crop.

The cutting device 28 is located behind the left and right weeding devices 19 and includes a pair of left and right rotary cutters 29 that rotate around the vertical axis. Although not described in detail, the rotary cutter 29 is provided with a cutting blade on the outer peripheral portion of the disk in a state of protruding outward in the radial direction, and the disk body rotates around the vertical axis, so that the cutting blade can be used. Cut the root of the planted crop.

As shown in FIG. 2, the feeder 5 has substantially the same transport width as the distance between the left and right side wall portions 26 of the cutting header 20, and the transport start end portion is provided at a low position connected to the rear of the cutting device 28. The feeder 5 is provided in a rearward tilting posture so as to transport the harvested product toward the rearward and upward sides of the machine body. As shown in FIG. 6, the feeder 5 is provided with side wall portions 30 extending along the transport direction on both the left and right sides, and the upper side and the lower side of the left and right side wall portions 30 are spaced apart from each other in the front-rear direction. They are integrally connected by a plurality of lateral supports 31 provided. Although not shown, on the lower side of the left and right side wall portions 30, the traveling transmission device 10 located below is connected by a wide plate-like body so as not to be dusted. Therefore, the feeder 5 is formed with a highly rigid structure that forms a substantially rectangular tubular transport path as a whole. The rear ends of the left and right side wall portions 26 of the cutting header 20 are connected by flange connection so as to be connected to the front end portions of the left and right side wall portions 30 of the feeder 5.

A rotating body 32 is provided between the side wall portions 30 on both the left and right sides at appropriate intervals along the transport direction. The scraped rotating body 32 is located on both the upper and lower sides of the transfer path of the harvested product, is erected over the side wall portions 30 on both the left and right sides, and is rotatably provided around the horizontal axis. The scraped rotating bodies 32 on both the upper and lower sides are rotationally driven in opposite directions to each other, and are configured to sandwich the harvested product between them and transport them rearward.

The transport end portion of the feeder 5 is provided with a shredding process section 33 that shreds the elongated harvested product to be transported. Although not described in detail, the shredding processing unit 33 includes cutting rotating bodies 34 that rotate around the horizontal axis on both the upper and lower sides of the harvested product transfer path. The cutting rotating body 34 is provided with cutting blades on the outer peripheral portion of the cylindrical member over the entire width in the transport width direction at appropriate intervals in the circumferential direction. The cutting rotating bodies 34 on both the upper and lower sides rotate in opposite directions to cut the harvested product by sandwiching the harvested product between the cutting blades on both the upper and lower sides. The shredding process unit 33 shreds the harvested product so that the harvested product has a length that is easy to handle when the harvested product is loaded on a truck and transported.

As shown in FIGS. 1 and 3, the separation device 6 is provided with fine stalk culm waste contained in the harvested product discharged from the transport end portion of the feeder 5 due to the ventilation action of the separation fan 35 rotating around the vertical axis. Separates impurities such as broken leaves and discharges them to the outside. That is, the harvested product discharged from the rear end of the feeder 5 is sucked by the separation fan 35 during the discharge, and relatively light impurities such as fine stalk culm scraps and leaf breaks are sucked upward. And is discharged to the outside. The harvested product (sugar cane), which is heavier than the contaminants, falls downward as it is without being sucked by the separation fan 35.

As shown in FIGS. 1 and 3, a receiver that receives and collects the harvested material discharged downward from the feeder 5 on the side directly below the separator 6 and on the rearward and lower side of the rear end of the feeder 5. A hopper 36 is provided. The harvested product received by the receiving hopper 36 is discharged from the lower part of the receiving hopper 36 to the transport start end of the discharge conveyor 7. Therefore, the receiving hopper 36 and the transport starting end portion of the discharge conveyor 7 form a receiving portion 37 that receives the harvested material and sends it backward.

The separation device 6, the receiving unit 37, and the discharge conveyor 7 constitute a post-processing device 38 that performs post-processing of the harvested product conveyed by the feeder 5.

As shown in FIGS. 1, 2 and 3, the discharge conveyor 7 has substantially the same width as the transport width of the feeder 5, and transports the harvested product in the rear-upward direction. The entire discharge conveyor 7 is supported by a support frame 39 of the frame structure, and extends from the lower rear part of the machine body toward the outer side and upper side of the machine body. In the discharge conveyor 7, endless rotating chains 40 are wound on both left and right sides of the transport path, and locking conveyors 41 are provided at predetermined pitches across the left and right endless rotating chains 40. By rotating and driving the endless rotating chain 40 by the hydraulic transfer motor 42 provided at the transfer end side, the harvested product is locked and conveyed and dropped and discharged outward from the transfer end. The harvested product is transported while being pushed and moved by the locking transport body 41 in a state of being received and supported by the bottom plate.

The discharge conveyor 7 is rotatably supported by the machine frame 11 around the vertical axis Y on the transport start end side. Then, the entire discharge conveyor 7 is rotatably supported by the machine frame 11 around the vertical axis Y. Although not described in detail, a hydraulic cylinder for changing the discharge position is provided, and the discharge conveyor 7 can be switched between a posture toward the rear of the machine body and a posture toward the outside of the side of the machine body.

The discharge conveyor 7 can be folded and switched to a compact storage posture having small dimensions in the vertical direction and the front-rear direction. That is, the support frame 39 is bent and rotatably connected around the horizontal axis X1 at the intermediate position of the transport path, and the hydraulic cylinder 7A for storage extends from the bent portion to the transport upper side portion and the transport lower side portion. It is equipped.

By expanding and contracting the storage cylinder 7A, the discharge conveyor 7 has an action posture (see the solid line in FIG. 1) for transporting the harvested material toward the outside of the machine body and a storage posture for retreating below the action posture. (Refer to the virtual line in FIG. 1).

The discharge conveyor 7 is bent and rotatably connected around the horizontal axis X2 in the middle of the transport end side, and the angle can be changed and adjusted by manual operation. Further, at the end of the transport, a guide plate 7B for guiding the flow of the harvested product to be discharged is provided so that the posture can be changed, and the discharge guide direction of the harvested product can be changed, so that the harvested product can be easily loaded on the transport vehicle during the harvesting work. It can be adjusted to the state (see the virtual line in FIG. 1).

Then, when traveling on the road or entering the field, the discharge conveyor 7 is switched to a posture toward the rear of the machine body. Although not shown, when the sugarcane harvester is harvesting in the field, the discharge conveyor 7 can be switched to the lateral side and the outer side of the machine body, and the harvested material can be discharged and collected on the loading platform of the trucks running in parallel. ..

[Frame structure]
Next, the frame structure of the airframe will be described.
As shown in FIGS. 4, 5 and 6, the fuselage frame 11 has a first frame portion 43 as a support frame located in the upper front part of the fuselage and extending in the front-rear direction, and a third frame portion 43 located in the lower rear part of the fuselage and extending in the front-rear direction. The two frame portions 44 are provided, and the first frame portion 43 and the second frame portion 44 are each formed in a frame shape in a plan view. The first frame portion 43 is formed wider than the feeder 5 over the entire area in the front-rear direction.

As shown in FIGS. 6 and 7, the feeder 5 is provided so as to pass above the second frame portion 44 and enter below the first frame portion 43, and the first frame portion 43 and the second frame portion 44 are provided. Are each connected to a feeder 5. On the lateral side of the feeder 5 in the left-right direction, a third frame portion 45 in a left-right vertical orientation that connects the first frame portion 43 and the second frame portion 44 is provided. The first frame portion 43 extends rearward from the front end portion of the second frame portion 44, and the third frame portion 45 extends in a forward-upward inclined posture, and the front end portion of the second frame portion 44 and the first frame portion 45. Of the frame portion 43, an intermediate portion closer to the front side than the position directly above the front end portion of the second frame portion 44 is connected.

As shown in FIGS. 6 and 7, the driving unit 3 and the engine 8 are placed and supported on the first frame unit 43 in a state of being arranged in the front-rear direction. On the front side of the first frame portion 43, a driving portion support portion 46 for mounting and supporting the driving portion 3 covered with the cabin 15 is provided. The driving unit support portion 46 is provided with horizontal rails 47 extending in the left-right direction on both front and rear sides, and the driving unit 3 can be stably operated with a cushioning member interposed therebetween at the mounting portions provided on the horizontal rails 47. Supports placement.

An engine support portion 48 for mounting and supporting the engine 8 is provided on the rear side of the first frame portion 43. The engine support portion 48 is provided with cross rails 49 extending in the left-right direction on both front and rear sides, and the engine 8 is provided with cushioning members (not shown) interposed at the mounting portions provided on both sides of each cross rail 49. Is stably mounted and supported. A radiator support 48a is provided on the right lateral side of the engine support 48. The left and right third frame portions 45 are each connected to a portion of the first frame portion 43 between the driving portion support portion 46 and the engine support portion 48.

The rear side of the second frame portion 44 is formed to have substantially the same width as the feeder 5, but the front end portion is extended so as to be wider toward the front end side, and the front end portion is wider than the feeder 5. Is formed in. The third frame portion 45 is connected to the front end portion of the second frame portion 44 formed wider than the feeder 5. The second frame portion 44 is provided with a lateral reinforcing body 44a extending in the left-right direction. The traveling transmission device 10 is mounted and supported on the rear side portion of the second frame portion 44. Further, on the rear side of the second frame portion 44, a conveyor support portion 50 for rotatably supporting the entire discharge conveyor 7 around the vertical axis Y is provided.

As shown in FIG. 9, the traveling transmission device 10 includes a hydrostatic stepless transmission as a transmission mechanism for shifting the power from the engine 8, a gear type transmission mechanism for branching and transmitting the power to the left and right rear wheels 2, and the like. A transmission case 51 having (not shown), left and right axle cases 52 covering both left and right output shafts extending from the transmission case 51 on both left and right sides, and left and right axle cases 52 provided on the outer end side of the output shaft. Left and right deceleration cases 53 having a gear-type deceleration mechanism (not shown) for decelerating power are provided.

As shown in FIG. 7, the engine 8 is arranged on the upper front side of the feeder 5, and the traveling transmission device 10 is arranged on the lower rear side of the feeder 5. Further, the front end of the traveling transmission device 10 is located on the rear side of the rear end of the engine 8, and the upper end of the traveling transmission device 10 is located on the lower side of the lower end of the engine 8. Further, the engine 8 is located on the rear side of the front end of the feeder 5, and the traveling transmission device 10 is located on the front side of the rear end of the feeder 5.

As shown in FIG. 6, the left and right deceleration cases 53 of the traveling transmission device 10 are flanged and fixed in a state of being placed and supported on the left and right side portions of the second frame portion 44. Then, the connecting block body 54 as a support member is provided in a state of being mounted on the upper side of the left and right deceleration cases 53. The connecting block body 54 is flange-connected to the deceleration case 53. Then, the left and right connecting block bodies 54 are connected to the bottom of the feeder 5. Although not shown, lateral supports extending to the left and right connecting block bodies 54 are provided in a fixed state along the bottom of the feeder 5 to reinforce the strength of the bottom.

Below the left and right connecting block bodies 54, a lower vertical support 57 is provided over the connecting block body 54 and the second frame portion 44. Further, on the upper side of the left and right connecting block bodies 54, an upper vertical support 58 is provided over the connecting block body 54 and the lower end portion of the portion corresponding to the shredding processing portion 33 in the feeder 5. In this way, the supporting strength of the feeder 5 is increased.

The rear end portion of the first frame portion 43 is extended to the bottom portion of the feeder 5, and the rear end portion of the first frame portion 43 is placed on the connecting block body 54 from above and is flanged by bolts. Therefore, the rear end portion of the first frame portion 43 is connected to the bottom portion of the feeder 5.

The front end of the second frame 44 is connected to the bottom of the feeder 5.
As shown in FIGS. 6 and 7, the left and right support brackets 59 are connected to the bottom portion of the feeder 5 corresponding to the front end portion of the second frame portion 44 in a state of extending downward from the lower portion of the left and right side wall portions 30. ing. The left and right support brackets 59 are placed and supported on the left and right side portions of the front end portion of the second frame portion 44, and are flanged by bolts.

The feeder 5 is provided with a square tubular bottom reinforcing body 60 extending along the bottom portion from a portion where the rear end portion of the first frame portion 43 is connected to a portion where the front end portion of the second frame portion 44 is connected. ing. The bottom reinforcing body 60 is provided on the outside of the side wall portion 30 in a state of extending in the front-rear direction along the lower end edge, and is integrally connected to the side wall portion 30.

As shown in FIGS. 4, 6 and 7, the left and right sides of the first frame portion 43 extend over the front and rear half portions of the left and right side portions of the first frame portion 43 and the upper and lower half portions of the left and right third frame portions 45. The fourth frame portion 61 of the above is provided. The fourth frame portion 61 has a vertically extending portion 61A extending downward from the front-rear intermediate portion of the first frame portion 43, and a front-rear extending portion 61B extending forward from the upper and lower intermediate portions of the third frame portion 45. The lower end portion of the vertically extending portion 61A and the front end portion of the front-rear extending portion 61B are integrally connected. The front and rear extending portions 61B of the left and right fourth frame portions 61 are connected to each other by a lateral connecting body 62. As shown in FIG. 7, the front end portions of the front and rear extension portions 61B of the left and right fourth frame portions 61 are connected to the cutting header 20 of the harvesting portion 4. Therefore, the harvesting portion 4 is supported by the left and right fourth frame portions 61.

[Moving part]
As shown in FIGS. 7 and 8, in addition to the engine 8, the driving unit 9 is provided with a radiator 70 for cooling the engine, an air cleaner 71, a pre-cleaner 72, a muffler 73, and exhaust gas of the engine 8 discharged from the muffler 73. An exhaust pipe 74 or the like for discharging to the outside is provided.

The engine 8 is provided in the central portion in the left-right direction of the driving portion 9. A driving unit 3 is provided in front of the engine 8, and a separating device 6 is provided in the rear of the engine 8. The engine 8 is provided at a position lower than the virtual line Q connecting the upper end of the driving unit 3 and the upper end of the separating device 6.

The radiator 70 is provided on the right side of the engine 8 (an example of one side in the left-right direction) and on the outer side of the right side of the feeder 5. A first fan 75 that generates cooling air is provided on the inner side (left side) of the radiator 70 in the left-right direction. A dustproof case 76 is provided on the lateral side (right side) of the radiator 70 in the left-right direction. The dustproof case 76 includes a porous body in which a large number of small-diameter vent holes are formed, and removes dust in the air while allowing the passage of air supplied to the radiator 70.

The dustproof case 76 is provided with a condenser 77 that condenses the refrigerant in an air conditioner (not shown) that air-conditions the inside of the cabin 15, an intercooler 78 that lowers the temperature of the air supply to the engine 8, and the like, and a first fan. The ventilation action of the 75 is configured to cool them together with the radiator 70.

An oil cooler 79 as an air-cooled cooling device for cooling hydraulic oil supplied to various flood control devices is provided behind the radiator 70 and overlaps with the feeder 5 in a side view. The oil cooler 79 is housed in a rectangular box-shaped dustproof case 80 provided with a porous body. A second fan 81 that generates cooling air is provided on the left-right inward side of the oil cooler 79, and is cooled by the air flowing through the dustproof case 80 by the ventilation action of the second fan 81.

The first fan 75 is rotationally driven by the hydraulic fan motor 82. The second fan 81 is rotationally driven by transmitting the power output from the output shaft of the engine 8 to the right side via the belt transmission mechanism 83 as the power transmission mechanism. The belt transmission mechanism 83 is arranged so as to extend over the space between the engine 8 and the radiator 70 and the space between the feeder 5 and the oil cooler 79. In this configuration, since the lateral outer side of the belt transmission mechanism 83 is covered with the dustproof cases 76, 80 and the like, it is possible to prevent the crop to be planted from interfering with the belt transmission mechanism 83 during the harvesting operation.

The air cleaner 71 for supplying combustion air to the engine 8 and the air cleaner 71 located directly above the air cleaner 71 are located on the right side of the aircraft in the space between the cabin 15 and the radiator 70 to remove large dust in advance. A pre-cleaner 72 that supplies the generated air to the air cleaner 71 is provided.

The air cleaner 71 and the pre-cleaner 72 are located on the front side of the machine body with respect to the engine 8 in the side view, and are located on the upper side of the feeder 5. The air cleaner 71 and the pre-cleaner 72 are provided so as to overlap the radiator 70 in the front-rear direction.

[Working deck]
As shown in FIGS. 2, 10 and 11, the work deck 90 is provided on the rear side of the engine 8 and above the feeder 5. An oil cooler 79 is provided on the right side of the work deck 90, and a step portion 91 for boarding the work deck 90 from outside the machine is provided on the left side of the work deck 90. Further, as shown in FIG. 1, a crop weed rod 92 extending in the front-rear direction is provided on the lateral and outer sides of the front wheels 1 and the rear wheels 2. The crop weed rod 92 can be used as a footrest when a worker gets into the work deck 90 from outside the machine.

The work deck 90 includes a first work deck 93 on which an operator can board from the outside toward the inside in the left-right direction, and a first work deck 93 on the inside side in the left-right direction of the first work deck 93. A second work deck 94 provided at a lower position is provided. Handrails 95 are provided on both front and rear sides of the first work deck 93. The work deck 90 is used for maintenance work in the engine room and maintenance work such as adjusting the tension of the transmission belt of the belt transmission mechanism 83.

The first work deck 93 and the step portion 91 are integrally formed in a series of connected states. The right end of the first working deck 93 is supported by a front-rear support member 97 fixed to a cover frame 96, which will be described later. The lower end of the step portion 91 is supported by the second frame portion 44 of the airframe frame 11.

The second working deck 94 is supported by the feeder 5. The left end of the second working deck 94 is supported by a lateral support 31 having a substantially L-shaped cross section, which is erected and supported over the left and right side wall portions 30 of the feeder 5. As shown in FIG. 11, the right end portion of the second working deck 94 is supported on the upper part of the right side wall portion 30 via the bracket 98.

As shown in FIGS. 11 and 12, a mechanical power transmission mechanism that transmits the power of the engine 8 to the rear of the machine body while passing below the first work deck 93 and at a position higher than the second work deck 94. The belt transmission mechanism 99 is provided. The belt transmission mechanism 99 is passed laterally on the left side of the feeder 5. The belt transmission mechanism 99 transmits the power output from the output shaft of the engine 8 to the left side via the relay transmission shaft 100 to the left end portion of the counter shaft 101 provided on the lower rear side. It is stretched along the front-back direction. Power is transmitted from the right end of the counter shaft 101 to the traveling transmission device 10.

[Engine cover]
As shown in FIGS. 10, 11, and 12, an engine cover 102 that covers the engine 8 is provided from a location where the radiator 70 is arranged to a portion on the left side of the engine 8 (an example of a portion on the other side in the left-right direction).

The engine cover 102 has an upper cover portion 103 that is located above the engine 8 and covers the engine 8 from above, and a side that is located on the side opposite to the radiator 70 with respect to the engine 8 and covers the engine 8 from the side. The front cover portion 104, the rear cover portion 105 located behind the engine 8 and covering the engine 8 from the rear, the front cover portion 106 partitioning between the engine 8 and the cabin 15, and the exhaust pipe covering the exhaust pipe 74. A cover portion 107 is provided.

The engine cover 102 is supported by a cover frame 96 that is raised and formed from the first frame portion 43 of the airframe frame 11. As shown in FIG. 12, the cover frame 96 includes a front frame portion 96a extending in a rectangular frame shape along the inner surface of the front cover portion 106 and a rear frame portion extending in a rectangular frame shape along the inner surface of the rear cover portion 105. A plurality of beam members 96e are erected and connected to the upper portion of the front frame portion 96a and the upper portion of the rear frame portion 96b.

Of the above-mentioned cover portions, the upper cover portion 103 and the front cover portion 106 are each formed of a plate body, and are configured so that hot air in the engine room is not transmitted to the upper space or the front driving portion 3. .. The upper cover portion 103 includes a first upper cover body 103A that covers the upper part of the radiator 70 and a second upper cover body 103B that covers the upper part of the engine 8. The upper cover portion 103 and the front cover portion 106 are fixed to the cover frame 96 by bolt connection.

As shown in FIG. 10, a window portion 108 is formed in the upper rear portion of the cabin 15. The upper cover portion 103 is provided at a position lower than the lower end of the window portion 108. The operator on board the driver 3 can visually check the rear side from the inside of the cabin 15 through the window 108 without being disturbed by the engine cover 102.

As shown in FIG. 12, a notch is formed in the upper cover portion 103, and the exhaust pipe 74 for discharging the exhaust gas of the engine 8 to the outside penetrates the notch of the upper cover portion 103 and is more than the upper cover portion 103. It is extended upward with it protruding upward. The engine cover 102 is provided with an exhaust pipe cover portion 107 that covers a protruding portion that projects upward from the upper cover portion 103 of the exhaust pipe 74. The exhaust pipe cover portion 107 is supported by the upper cover portion 103.

The exhaust pipe 74 has a shape in which the upper portion is bent in a substantially L shape in a side view so that the exhaust port 74a faces rearward. Inside the exhaust pipe cover portion 107, a cylindrical covering portion 107a that surrounds the outer peripheral portion of the rearward pipe portion 74b of the exhaust pipe 74 is provided. The exhaust port 74a at the rear end of the rearward portion enters the inside of the exhaust port 74a at the rear end of the covering portion 107a, so that the exhaust pipe 74 is not exposed to the outside. The exhaust gas discharged from the exhaust port 74a is guided by the covering portion 107a and is discharged outward from the opening.

Of the above-mentioned cover portions, the side cover portion 104 and the rear cover portion 105 are made of a porous plate material in which a large number of small-diameter holes made of, for example, punching metal are formed in many regions, and the ventilation portion 109 is provided. It is formed. By forming the ventilation portion 109 in this way, the wind generated by the first fan 75 and after passing through the radiator 70 and the like passes around the engine 8 and the hot air around the engine 8 through the ventilation portion 109. Can be discharged to the outside.

The side cover portion 104 is configured to be removable. Since it is a general support configuration, although not described in detail, the side cover portion 104 is provided with a hook portion 110 of a hook engagement type at the upper portion, and is locked to a receiver 111 provided on the cover frame 96. The lower part is fixed with bolts (see FIG. 10).

The rear cover portion 105 includes an upper right cover body 105a that covers the upper right side, a lower right cover body 105b that covers the lower right side, an upper left cover body 105c that covers the upper left side, and a first left lower cover body 105d that covers the left side of the lower left side. The lower left cover body 105e covers the right side of the lower left side, and the radiator cover body 105f covers the rear of the radiator 70.

Of the above-mentioned divided cover bodies, the upper right cover body 105a, the first left lower cover body 105d, and the radiator cover body 105f are maintained by releasing the bolt connection (for example, adjusting the tension of the transmission belt and adjusting the engine oil). It can be easily removed by itself for replacement).

[Rear cover]
As shown in FIGS. 1 and 2, a rear cover 112 is provided which covers the rear side portion of the driving portion 9 from the left side in a state of being connected to the rear end portion of the side cover portion 104 of the engine cover 102. The rear cover 112 is located above the rear wheel 2 on the left side and has a shape bent in a substantially L shape in a plan view. The rear cover 112 is provided so as to cover the outer left side of the work deck 90. When using the work deck 90, it is necessary to remove the rear cover 112.

Although not shown, in the rear cover 112, similarly to the side cover portion 104, the hook portion of the hook engagement type is locked to the receiver provided on the handrail 95 of the work deck 90, and the rear portion is used as the feeder 5 or the like. It is configured to be detachably connected with bolts.

[Fuel tank]
As shown in FIGS. 3 and 13, a first fuel tank 115 as a shared fuel tank for storing fuel supplied to the engine 8 is provided in a space on the lower rear side of the cabin 15 located on the right side of the fuselage. ing. The first fuel tank 115 is placed and supported on a tank support portion 116 extending to the right side in a cantilever shape from the front-rear extending portion 61B of the fourth frame portion 61 on the right side of the airframe frame 11. Since the fourth frame portion 61 is supported by the first frame portion 43, the first fuel tank 115 is supported by the first frame portion 43.

The second fuel tank 117, which is used in combination with the first fuel tank 115, is provided side by side with the first fuel tank 115 in a state of being located inward in the left-right direction with respect to the first fuel tank 115. As shown in FIG. 7, the second fuel tank 117 is provided in the space formed between the cabin 15 and the engine 8 and the feeder 5. The upper surface of the second fuel tank 117 is formed in a horizontal posture along the first frame portion 43 as a support frame in a side view. The bottom surface of the second fuel tank 117 is formed in an inclined posture along the inclined shape of the upper surface of the feeder 5. The second fuel tank 117 has a front-rear length extending from the lower part of the cabin 15 to the lower part of the engine 8. Further, the second fuel tank 117 has a left-right length extending from the left side portion and the right side portion of the feeder 5. That is, the left-right width of the second fuel tank 117 is substantially the same as the left-right width of the feeder 5.

As shown in FIG. 13, the second fuel tank 117 is provided so as to project outward to the right side of the right end portion of the feeder 5. The second fuel tank 117 is supported by the feeder 5. The front side and the rear side of the second fuel tank 117 are mounted and supported by the front and rear lateral supports 31 in the feeder 5. The second fuel tank 117 is held in position by a band 118 extending from the rear lateral support 31 over the lateral coupling 62. The horizontal support 31 has a substantially L-shaped cross section, and has a shape that facilitates the placement of the second fuel tank 117.

The bottom of the first fuel tank 115 and the bottom of the second fuel tank 117 are communicated with each other via a connecting pipe 119. The bottom of the first fuel tank 115 and the bottom of the second fuel tank 117 are located at substantially the same height. The first fuel tank 115 is formed with a replenishment port 120 for replenishing fuel from the outside. Further, fuel is supplied from the first fuel tank 115 to the engine 8 through a fuel supply pipe (not shown).

Since the first fuel tank 115 and the second fuel tank 117 are communicatively connected via the connection pipe 119, when fuel is supplied from the replenishment port 120, the first fuel tank 115 and the second fuel tank 117 are connected. When fuel is supplied and fuel is consumed at the same time, the liquid levels of both fuel tanks 115 and 117 decrease together while maintaining substantially the same level.

[Hydraulic oil supply configuration]
As shown in FIG. 13, the hydraulic oil tank 121 for storing the hydraulic oil supplied to hydraulic equipment such as a plurality of hydraulic cylinders and a plurality of hydraulic motors is different from the second fuel tank 117 as the first fuel tank 115. It is provided side by side with the second fuel tank 117 in a state of being located on the outer side opposite to the left-right direction.

The hydraulic oil tank 121 is located on the outer left side of the feeder 5, and is a tank support portion that is cantilevered to the left side from the front-rear extending portion 61B of the fourth frame portion 61 on the left side of the airframe frame 11. It is mounted and supported on 122. The hydraulic oil tank 121 is a tank having substantially the same storage capacity as the first fuel tank 115, and the hydraulic oil tank 121 and the first fuel tank 115 are distributed and arranged on both the left and right sides to stabilize the left and right weight balance. be able to.

As shown in FIG. 3, a first hydraulic valve unit VU1 that controls the flow state of hydraulic oil from the hydraulic oil tank 121 to various hydraulic devices is located between the rear wheel 2 on the right side and the first fuel tank 115. It is prepared in the space. The first hydraulic valve unit VU1 is supported by being connected to an intermediate portion of the third frame portion 45 on the right side of the airframe frame 11 via a support bracket 123 (see FIG. 5).

The first hydraulic valve unit VU1 includes a plurality of control valves that separately control the supply and discharge of hydraulic oil to a plurality of hydraulic devices, for example, a plurality of hydraulic motors and hydraulic cylinders. Each control valve is switched based on the operation of an operating tool (not shown) provided in the driving unit 3. The hydraulic oil stored in the hydraulic oil tank 121 is sucked by the hydraulic pump PO (see FIGS. 12 and 13) driven by the engine 8 and supplied to each hydraulic device via the first hydraulic valve unit VU1.

As shown in FIG. 1, a second hydraulic valve unit VU2 for controlling a flow state to another hydraulic device different from the control target of the first hydraulic valve unit VU1 while being located on the left outer side of the feeder 5 is provided. Has been done. The second hydraulic valve unit VU2 is supported in the middle of the third frame portion 45 on the left side of the airframe frame 11.

[Another Embodiment]
(1) In the above embodiment, the step portion 91 for boarding is provided on the left side of the work deck 90, but such a step portion 91 may not be provided.

(2) In the above embodiment, the ventilation portion 109 is formed in the side cover portion 104 and the rear cover portion 105 of the engine cover 102, but any of the side cover portion 04 and the rear cover portion 105. The ventilation portion 109 may be formed on one side.

(3) In the above embodiment, the engine cover 102 is provided with the exhaust pipe cover portion 107, but the engine cover 102 may not be provided with the exhaust pipe cover portion 107.

(4) In the above embodiment, the upper cover portion 103 of the engine cover 102 is provided at a position lower than the lower end of the window portion 108 provided in the cabin 15, but instead of this configuration, the upper cover portion is provided. The 103 may be provided at a position higher than the lower end of the window portion 108.

(5) In the above embodiment, the power transmission mechanism 99 for transmitting the power of the engine 8 to the rear of the machine body is provided, and the power transmission mechanism 99 is passed under the first work deck 93. Alternatively, the power transmission mechanism 99 may extend downward from the engine 8 to transmit power, and the entire work deck 90 may be provided at a low position.

(6) In the above embodiment, the engine cover 102 includes a side cover portion 104, a rear cover portion 105, an upper cover portion 103, a front cover portion 106, and the like, but the configuration does not include any of them. Alternatively, the configuration may not include the entire engine cover 102.

(7) In the above embodiment, the radiator 70 is provided on the right side of the engine 8 and the oil cooler 79 as a fan cooling type cooling device is provided behind the radiator 70. Instead of this configuration, the radiator is provided. The 70, the oil cooler 79, and the like may be provided on the left side of the engine 8. Further, the radiator 70, the oil cooler 79 and the like may be provided at a location away from the engine 8.

(8) In the above embodiment, in the above embodiment, the aftertreatment device 38 is configured to include the separation device 6, the receiving unit 37, and the discharge conveyor 7, but instead of such a configuration, the harvested product A storage unit may be provided at the rear of the machine body and stored as it is in the storage unit, and the form of post-treatment can be changed as appropriate.

(9) In the above embodiment, the cabin 15 that covers the driving unit 3 is provided, but the cabin 15 may not be provided.

(10) In the above embodiment, the wheel-type traveling device (rear wheel 2) is provided, but a crawler traveling device may be provided.

The present invention can be applied to a sugar cane harvester.

3 Driving unit 4 Harvesting unit 5 Feeder (conveyor)
8 Engine 15 Cabin 38 Aftertreatment device 70 Radiator 74 Exhaust pipe 79 Cooling device 90 Work deck 91 Step part 93 First work deck 94 Second work deck 99 Power transmission device 102 Engine cover 103 Top cover part 104 Side cover part 105 After Cover part 106 Front cover part 107 Exhaust pipe cover part 108 Window part

Claims (9)

The harvesting section, which is installed in the lower front part of the aircraft and harvests the crops that are being planted,
A transport device in a rear-up tilted posture that transports the harvested material harvested in the harvesting section upward after the machine body, and
A post-treatment device connected to the rear part of the transport device and performing post-treatment of the harvested product transported by the transport device,
The operation unit located above the transfer device and
An engine located behind the driving unit and above the transport device,
A sugar cane harvester provided with a work deck located behind the engine and above the transport device. A radiator is provided on one side of the engine in the left-right direction.
A fan-cooled cooling device is provided on one side of the work deck in the left-right direction and behind the radiator.
The sugar cane harvester according to claim 1, wherein a step portion for boarding the work deck from outside the machine is provided on the other side of the work deck in the left-right direction. The sugar cane harvester according to claim 2, wherein an engine cover covering the engine is provided from a portion where the radiator is arranged to a portion on the other side in the left-right direction of the engine. The engine cover is provided with a side cover portion that is located on the side opposite to the radiator with respect to the engine and covers the engine from the side.
The sugar cane harvester according to claim 3, wherein a ventilation portion is formed in the side cover portion. The engine cover is provided with a rear cover portion that is located behind the engine and covers the engine from the rear.
The sugar cane harvester according to claim 3 or 4, wherein a ventilation portion is formed in the rear cover portion. After the engine cover is located on the side opposite to the radiator with respect to the engine and covers the engine from the side, and is located behind the engine and covers the engine from the rear. With a cover part,
The sugar cane harvester according to any one of claims 3 to 5, wherein at least one of the side cover portion and the rear cover portion is removable. The engine cover is provided with an upper cover portion that is located above the engine and covers the engine from above.
An exhaust pipe that exhausts the exhaust gas of the engine to the outside is extended upward through the upper cover portion.
The engine cover is provided with an exhaust pipe cover portion that covers a protruding portion of the exhaust pipe that projects upward from the upper cover portion.
The sugar cane harvester according to any one of claims 3 to 6, wherein the exhaust pipe cover portion is supported by the upper cover portion. A cabin covering the driving unit is provided.
A window is provided at the rear upper part of the cabin.
The upper cover portion is provided at a position lower than the lower end of the window portion.
The sugar cane harvester according to claim 7, wherein the engine cover is provided with a front cover portion that partitions the engine and the cabin. A first work deck on which an operator can board the work deck from the outside toward the inside in the left-right direction, and a first work deck on the inward side in the left-right direction and lower than the first work deck. It is equipped with a second work deck provided at the position,
A power transmission mechanism for transmitting the power of the engine to the rear of the fuselage is provided.
The sugar cane harvester according to any one of claims 1 to 8, wherein the power transmission mechanism is passed below the first work deck and at a position higher than the second work deck.

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