JP2005176638A - Hydraulic piping structure of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the hydraulic piping structure of a combine harvester, in which pipes are laid between an oil tank and a traveling hydraulic non-stage transmission in as short lengths as possible. <P>SOLUTION: This hydraulic piping structure of the combine harvester is characterized by disposing a traveling hydraulic non-stage transmission 11 on a travel machine frame 2 on which an engine 8 and a thresher 7 are loaded, disposing an engine 8 on the side of an oil tank 13 disposed in the front of the thresher 7 and used for the traveling hydraulic non-stage transmission 11, and disposing hydraulic pipes 44, 47 between the traveling hydraulic non-stage transmission 11 and the oil tank 13 through a space between the frame 12 of the travel machine frame 2 and a belt 16, below the belt 16 for transmitting a driving force from the engine 8 to the traveling hydraulic non-stage transmission 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hydraulic piping structure for a combined hydraulic continuously variable transmission.

An engine and a threshing device are mounted on a traveling machine body equipped with a conventional traveling device, a traveling hydraulic continuously variable transmission for driving the traveling device is provided, and an oil tank for the traveling hydraulic continuously variable transmission is provided in front of the threshing device. The engine is located on the side of the oil tank, the traveling hydraulic continuously variable transmission is disposed in front of the engine, and the engine is driven from the engine to the traveling hydraulic continuously variable transmission through the space between the oil tank and the engine. A combine that transmits force by a belt is known (for example, see Patent Document 1).
JP 2000-92950 A

  However, since the hydraulic piping between the traveling hydraulic continuously variable transmission and the oil tank passes through the lower part of the fuselage frame or bypasses the belt, the piping distance increases, resulting in a large pipe resistance. Therefore, there is a drawback that the distribution efficiency of the oil in the pipe is lowered.

  The combined hydraulic piping structure of the present invention for solving the above-described problem includes an engine 8 and a threshing device 7 mounted on a traveling machine body 2 provided with the traveling device 1, and a traveling hydraulic continuously variable for driving the traveling device 1. The transmission 11 is provided, the oil tank 13 for the traveling hydraulic continuously variable transmission 11 is disposed in front of the threshing device 7, the engine 8 is disposed on the side of the oil tank 13, and the traveling hydraulic continuously variable is in front of the engine 8. A transmission 11 is arranged, and a driving force is transmitted from the engine 8 to the traveling hydraulic continuously variable transmission 11 through the space between the oil tank 13 and the engine 8 by the belt 16. The hydraulic pipes 44 and 47 between the tank 13 and the tank 13 are provided below the belt 16 and through the space S between the body frame 12 of the traveling machine body 2 and the belt 16. Features and To have.

  Secondly, a belt guide 17 is provided for guiding the downward movement of the belt 16 that transmits driving force from the engine 8 to the traveling hydraulic continuously variable transmission 11, and between the traveling hydraulic continuously variable transmission 11 and the oil tank 13. The hydraulic pipes 44 and 47 are provided so as to pass under the belt guide 17.

  Thirdly, the engine 8 and the threshing device 7 are mounted on the traveling machine body 2 provided with the traveling device 1, the traveling hydraulic continuously variable transmission 11 for driving the traveling device 1, and the working machine hydraulic pressure for driving the working device are not provided. A step transmission 23 is provided, an oil tank 13 for both hydraulic continuously variable transmissions 11 and 23 is disposed in front of the threshing device 7, an engine 8 is disposed on the side of the oil tank 13, and the oil tank 13 and threshing are arranged. A working machine hydraulic continuously variable transmission 23 is arranged between the oil tank 13, a traveling hydraulic continuously variable transmission 11 is arranged in front of the oil tank 13, and an oil inlet / outlet port 37 is provided on the front and back of the oil tank 13. The working machine hydraulic continuously variable transmission 23 is connected via an input / discharge port 37 on the back side, and the traveling hydraulic continuously variable transmission 11 is connected via an input / discharge port 37 on the front side.

  According to the structure of the present invention configured as described above, the pipe between the traveling hydraulic continuously variable transmission and the oil tank is passed below the fuselage frame or the belt is bypassed, etc. Since it can be performed at a short distance and the pipe line resistance is reduced, there is an effect that the oil circulation efficiency in the pipe is improved. Moreover, since it is located above the body frame, adhesion of mud, soil, etc. to the pipe, contact between the pipe and stone, etc. can be prevented, and damage to the pipe can also be prevented.

  At this time, a belt guide that guides the downward fluctuation of the belt is provided, and the belt between the traveling hydraulic continuously variable transmission and the oil tank is configured to pass under the belt guide, thereby rotating the belt in operation. Can be prevented from contacting the piping.

  In addition to the above-described traveling hydraulic continuously variable transmission, a working machine hydraulic continuously variable transmission for driving a working machine such as a preprocessing unit or a feed chain is disposed between the oil tank behind the oil tank and the threshing device. Piping between the oil tank and each hydraulic continuously variable transmission by connecting both the hydraulic continuously variable transmission and the oil tank through the oil inlet / outlet ports provided on the front and back of the oil tank Can be shortened, the pipe resistance is reduced, and the oil circulation efficiency in the pipe is improved.

  In particular, since the work machine hydraulic continuously variable transmission is arranged in a space that is conventionally empty in front of the threshing device, the traveling hydraulic continuously variable transmission and the work machine hydraulic continuously variable transmission are arranged in a compact manner. The aircraft can be made compact.

  And as described above, the traveling hydraulic continuously variable transmission and the work machine hydraulic continuously variable transmission are arranged separately on the front and rear of the oil tank, and the hydraulic piping is respectively performed on the front side and the back side of the oil tank, The inconvenience of piping concentrating on one side (front side or back side) of the oil tank is prevented, and it is easy to assemble the piping and secure the piping passage so that the piping work can be performed easily.

  1 and 2 are a side view and a plan view of a combine adopting the hydraulic piping structure of the present invention, and a pre-processing unit 3 is provided in front of a traveling machine body 2 provided with a crawler type traveling device 1 so as to be movable up and down. It has been. On the traveling machine body 2, a driver's seat 4 is mounted on the right front side, a Glen tank 6 is mounted on the rear side of the driver seat 4, and a threshing device 7 is mounted on the left side.

  The engine is mounted below the driver's seat, and as shown in FIG. 3, an output shaft of the engine 8 projects toward the left side (threshing device 7 side), and a drive pulley 9 is provided. A traveling hydraulic continuously variable transmission 11 for shifting and driving the traveling device 1 in a stepless manner is attached to the traveling mission case 10 in front of the drive pulley 9. The left side of the engine 8 is in front of the threshing device 7, and an oil tank 13 for oil for hydraulic operating equipment is provided on the left side of the drive pulley 9 of the engine 8.

  A driving pulley 9 of the engine 8 and an input pulley 14 of the traveling hydraulic continuously variable transmission 11 are connected via a belt 16, and a driving force is input from the engine 8 to the traveling hydraulic continuously variable transmission 11. A space S is provided between the lower surface of the belt 16 and the body frame 12, and the lower side of the belt 16 is guided by a belt guide 17 attached to the body frame 12. The belt 16 is guided by the belt guide 17, and the downward movement is restricted even during rotational driving.

  A gate-shaped pretreatment frame 18 that supports the pretreatment unit 3 is provided so as to surround the left and right sides of the oil tank 13, and a drive pulley 19 of the pretreatment unit 3 is pivotally supported on the pretreatment frame 18. The oil tank 13 is fixed to a support bracket 21 provided on the body frame 12 side via a belt 22. The oil tank 13 can be easily taken in and out from the front of the pretreatment frame 18 by releasing the fastening of the belt 22.

  By providing the oil tank 13 below the pretreatment frame 18 that has conventionally been an empty space, the space can be effectively used and the capacity of the oil tank 13 can be increased. In addition, by installing and removing the oil tank 13 from the front of the pretreatment frame 18, the oil tank 13 can be easily installed and assembled.

  As shown in FIG. 4, between the oil tank 13 and the front wall 7 a of the threshing device 7, a work machine such as a feed chain that conveys the pretreatment unit 3 and the cereal straw to the threshing device 7 is stepless. A work machine hydraulic continuously variable transmission 23 that is driven to shift is attached to the mission case 24 side.

  As described above, the traveling hydraulic continuously variable transmission 11 and the work machine hydraulic continuously variable transmission 23 are arranged separately before and after the oil tank 13, and in particular, the working machine hydraulic continuously variable transmission 23 is the threshing device 7. Since it is disposed in a space that was previously empty in front, the traveling hydraulic continuously variable transmission 11 and the work machine hydraulic continuously variable transmission 23 are compactly disposed on the body frame 12 to make the traveling body 2 compact. can do. An oil tank 13, a traveling hydraulic continuously variable transmission 11, and a work machine hydraulic continuously variable transmission 23 are connected to each other. Both hydraulic continuously variable transmissions 11 and 23 are operated by oil in the oil tank 13.

  On the other hand, the transmission of the present combiner is configured to turn the traveling machine body 2 by operating a clutch by hydraulic pressure. Moreover, raising / lowering of the pretreatment part 3 and raising / lowering of the discharge auger (not shown) of the Glen tank 6 are performed by a hydraulic cylinder. Therefore, as shown in FIG. 5, the control valves 33 for controlling the left and right drive clutches 26 and 27, the side clutch 28, the turn switching clutch 29, the elevating hydraulic cylinder 31 of the pretreatment unit, and the elevating hydraulic cylinder 32 of the discharge auger. Is provided.

  The control valve 33 is connected to the oil tank 13, and the drive clutches 26 and 27, the side clutch 28, the turn switching clutch 29, and the lift hydraulic cylinders 31 and 32 are driven by oil in the oil tank 13. The

  As shown in FIG. 3, the control valve 33 is disposed in front of the engine 8 and on the side of the traveling hydraulic continuously variable transmission 11 and attached to the body frame 12 side. An oil cooler 35 is provided on the outer side of the engine 8. As shown in FIG. 4, a gear pump 34 and a strainer 36 for supplying oil from the oil tank 13 to the control valve 33 are disposed on the back side of the engine 8.

  The hydraulic piping structure will be described. As shown in FIGS. 3 and 4, oil inlet / outlet ports 37 are provided on the front surface and the rear surface of the oil tank 13. The inflow port and the discharge port of the work machine hydraulic continuously variable transmission 23 are connected to an input / discharge port 37 on the back side of the oil tank 13 via a work machine input oil pipe 38 or a work machine output oil pipe 39. .

  In addition, the inflow port of the strainer 36 and the inlet / outlet port 37 on the back side of the oil tank 13 are connected via a conval input pipe 41. Oil discharged from the strainer 36 flows into the gear pump 34. The discharge port of the gear pump 34 is connected to the inflow port of the control valve 33 through the conval input pipe 42. As a result, pressure oil is supplied to the control valve 33 by driving the gear pump 34.

  The conval input pipe 42 passes between the engine 8 and the pretreatment frame 18 and is piped forward and connected to the inflow port of the control valve 33. The discharge port of the control valve 33 is connected to the work machine hydraulic continuously variable transmission 23 via the convalve oil drain pipe 43. The work machine hydraulic continuously variable transmission 23 has a structure in which oil discharged when the hydraulic continuously variable transmission is operated and oil discharged from the control valve 33 merge and are discharged from the discharge port.

  The inflow port of the traveling hydraulic continuously variable transmission 11 and the inlet / outlet port 37 on the front side of the oil tank 13 are connected via a traveling input oil pipe 44. The discharge port of the traveling hydraulic continuously variable transmission 11 is connected to the oil cooler 35 via the travel output oil pipe 46, and the oil discharged from the oil cooler 35 enters the front side of the oil tank 13 via the cooling oil discharge pipe 47. It is connected to the discharge port 37.

  As shown in FIG. 6, a passage hole 48 is formed in the belt guide 17 at a position below the belt 16, and the travel input oil pipe 44 and the cooling oil discharge pipe 47 pass through the passage hole 48. Thus, the oil tank 13 and the traveling hydraulic continuously variable transmission 11 or the oil cooler 35 are connected. The cooling oil discharge pipe 47 is a pipe that returns oil discharged from the traveling hydraulic continuously variable transmission 11 to the oil tank 13 via the oil cooler 35, and is an oil exhaust pipe of the traveling hydraulic continuously variable transmission 11.

  That is, piping between the oil tank 13 and the traveling hydraulic continuously variable transmission 11 is performed between the belt 16 and the machine frame 12 through the passage hole 48 of the belt guide 17, and below the machine frame 12. Compared with the case where the belt 16 is passed or the belt 16 is bypassed, it is performed at a short distance and the pipe resistance is reduced, so that the distribution efficiency of oil in the pipe is improved. Moreover, since it is located above the body frame 12, adhesion of mud, soil, etc. to the piping, contact between the piping and stones, etc. are prevented, and damage to the piping is prevented.

  At this time, the fluctuation on the lower side of the belt 16 is regulated by the belt guide 17 and the pipes 44 and 47 are made through the passage holes 48 of the belt guide 17, so that even if the belt 16 is rotating, the belt 16 16 is prevented from contacting the pipes 44 and 47. The pipes 44 and 47 passing through the passage hole 48 of the belt guide 17 can move only within the passage hole 48, that is, the pipes 44 and 47 are positioned by the passage hole 48.

  Note that the waste oil heated by the operation of the traveling hydraulic continuously variable transmission 11 is cooled by the oil cooler 35 and returned to the oil tank 13, that is, the oil in the oil tank 13 is cooled by the oil cooler 35.

  On the other hand, since the work machine hydraulic continuously variable transmission 23 disposed behind the oil tank 13 is piped by the inlet / outlet port 37 on the back surface of the oil tank 13, the work machine hydraulic continuously variable transmission 23 and the oil tank 13 are connected to each other. The piping between them is shorter than the case where the piping is bypassed from the front surface of the oil tank 13, and the pipe resistance is reduced also with respect to the working machine hydraulic continuously variable transmission 23, so that the oil circulation efficiency in the piping is reduced. improves.

  Then, as described above, the traveling hydraulic continuously variable transmission 11 and the work machine hydraulic continuously variable transmission 23 are arranged separately on the front and rear sides of the oil tank 13, and hydraulic piping is respectively provided on the front side and the back side of the oil tank 13. By doing so, it is possible to prevent the inconvenience that the piping is concentrated on one surface (front surface or back surface) side of the oil tank 13, and it is easy to assemble the piping and secure the piping passage so that the piping work can be easily performed.

  On the other hand, the oil input to the control valve 33 is less likely to be overheated to a high temperature as compared with the drained oil after being used for the operation of the hydraulic continuously variable transmission. Therefore, the temperature difference between the oil discharged from the control valve 33 and the oil cooled by the oil cooler 35 and returned to the oil tank 13 is small, and the oil discharged from the control valve 33 is at a low temperature.

  As a result, the work implement hydraulic continuously variable transmission 23 is cooled by the low-temperature oil discharged from the control valve 33, and the cooling mechanism of the work implement hydraulic continuously variable transmission 33 can be easily configured with a small number of pipes.

It is a side view of a combine. It is a top view of a combine. It is a principal part inside front perspective view of the machine body front part which shows an oil tank part. It is a principal part inside back perspective view of the machine body front part which shows an oil tank part. It is a hydraulic piping diagram of a control valve, a traveling hydraulic continuously variable transmission, and a work machine hydraulic continuously variable transmission. It is a perspective view of a belt guide part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling device 2 Traveling machine body 7 Threshing device 8 Engine 11 Traveling hydraulic continuously variable transmission 13 Oil tank 16 Belt 17 Belt guide 23 Work machine hydraulic continuously variable transmission 44 Traveling input oil pipe (hydraulic piping)
47 Cooling oil drain pipe (hydraulic piping)
S space

Claims (3)

  An engine (8) and a threshing device (7) are mounted on a traveling machine body (2) provided with a traveling device (1), and a traveling hydraulic continuously variable transmission (11) for driving the traveling device (1) is provided. The oil tank (13) for the traveling hydraulic continuously variable transmission (11) is arranged in front of the threshing device (7), the engine (8) is arranged on the side of the oil tank (13), and the engine (8) The traveling hydraulic continuously variable transmission (11) is disposed in front of the engine and is driven from the engine (8) to the traveling hydraulic continuously variable transmission (11) through a space between the oil tank (13) and the engine (8). Force is transmitted by the belt (16), and hydraulic piping (44), (47) between the traveling hydraulic continuously variable transmission (11) and the oil tank (13) is located below the belt (16). And between the body frame (12) of the traveling body (2) and the belt (16). Hydraulic pipe structure of the combine provided by passing a space (S).   A belt guide (17) is provided for guiding downward movement of the belt (16) that transmits driving force from the engine (8) to the traveling hydraulic continuously variable transmission (11), and the traveling hydraulic continuously variable transmission (11) and The hydraulic piping structure for a combine according to claim 1, wherein hydraulic piping (44), (47) between the oil tank (13) is provided below the belt guide (17). An engine (8) and a threshing device (7) mounted on a traveling machine body (2) provided with a traveling device (1), and a traveling hydraulic continuously variable transmission (11) for driving the traveling device (1); A work machine hydraulic continuously variable transmission (23) for driving the work machine, and an oil tank (13) for both hydraulic continuously variable transmissions (11) and (23) disposed in front of the threshing device (7). The engine (8) is disposed on the side of the oil tank (13), the work implement hydraulic continuously variable transmission (23) is disposed between the oil tank (13) and the threshing device (7), and the oil tank ( 13), a traveling hydraulic continuously variable transmission (11) is disposed in front of the oil tank (13), and an oil inlet / outlet port (37) is provided on the front and rear surfaces of the oil tank (13). Connect the work implement hydraulic continuously variable transmission (23) and connect the front-side input / output port (37). Hydraulic pipe structure of the combine of connecting the travel hydraulic stepless transmission (11) and.

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