JP2005145154A - Transmission mechanism of traveling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission mechanism of a traveling device for cooling a lubricating oil by an oil cooler 65 and always cooling the lubricating oil by the oil cooler by operating, as a drive source, any rotating shaft in a transmission case 10 by a pump 66 installed in the transmission case 10. <P>SOLUTION: This transmission mechanism of the traveling device comprises right and left side clutches 21 and 21 engaging and disengaging the transmission of power to the right and left axles 23 and 23 of the traveling device 1 and a differential mechanism 30 transmitting power to an axle 23 for the disengaged side clutch among the right and left side clutches 21 and 21. A transmission 40 for turning having a clutch 48 for straight forward traveling for transmitting power to right and left axes 23 and 23 when the differential mechanism 30 is in straight forward in synchronism with rotation from the right and left side clutches 21 and a clutch 60 for turning for transmitting rotation to the right or left side turning inside axle 23 in turning is installed in a transmission route on the upstream side of the differential mechanism. An oil cooler 65 for cooling the lubricating oil in a transmission case 10 is installed at the specified position of a frame. The oil cooler 65 forms a lubricating oil route by a pump 66 feeding oil with any rotating shaft in the transmission case 10 as a drive source. The pump 66 is directly mounted on the transmission case 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a transmission mechanism of a traveling device.

2. Description of the Related Art Conventionally, a configuration having a clutch for connecting and disconnecting power transmission to the left and right axles, an oil cooler for cooling the lubricating oil of the clutch, and a pump for supplying the lubricating oil to the oil cooler at a desired position of the airframe is known. (For example, see Patent Document 1).
Conventionally, a configuration in which lubricating oil is sent from a tank to a transmission by a gear pump provided in an engine and the lubricating oil is returned to the tank via an oil cooler when the continuously variable transmission (HST) is not used is also known. Yes (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 8-25988 JP 2003-26034 A

Of the known examples, the one described in Japanese Patent Laid-Open No. 8-25988 is merely provided with an oil cooler, and it is unclear when and how it operates.
Further, among the known examples described in Japanese Patent Application Laid-Open No. 2003-26034, when a continuously variable transmission (HST) is not used (when the engine is stopped after running stop), a tank is provided via an oil cooler. There is a problem in that the lubricating oil is cooled only when it is returned to the factory.
In other words, when a configuration is adopted in which a rotation that gives a difference in rotation is transmitted to the traveling devices on the inside and outside of the turn by a transmission route that transmits to the axle via the differential mechanism and a transmission route that transmits via the side clutch. Since a shock due to the rotation difference between the inside and outside of the turn occurs during the turning operation, a straight clutch and a turning clutch are provided between the side clutch and the differential mechanism, and the straight clutch is disconnected when turning. If the turning clutch is turned on while turning, shock during turning operation can be reduced.
However, in such a configuration, since the differential mechanism and the straight traveling clutch are always operating, there arises a problem that the noise of the lubricating oil increases.

In the present application, an oil cooler 65 is provided to cool the lubricating oil, and a pump 66 is attached to the transmission case 10 to operate any one of the rotation shafts in the transmission case 10 as a drive source. Is to be cooled.
In the present invention, left and right side clutches 21 and 21 for connecting / disconnecting power transmission to the left and right axles 23 and 23 of the traveling device 1 are provided, and the difference in power transmission to the axle 23 cut off of the left and right side clutches 21 and 21 is provided. A moving mechanism 30 is provided, and the differential mechanism 30 transmits to the left and right axles 23, 23 when traveling straight in synchronism with the rotation from the left and right side clutch 21 in the upper transmission path of the differential mechanism 30. In a transmission comprising a turning transmission device 40 having a turning clutch 48 and a turning clutch 60 for transmitting rotation to the left or right turning inner axle 23 during turning, the lubricating oil in the case 10 of the transmission is supplied. An oil cooler 65 to be cooled is provided at a desired position of the machine body, and the oil cooler 65 feeds oil using any rotation shaft in the transmission case 10 as a drive source. 66, a lubricating oil path is formed, and the pump 66 is a transmission mechanism of a traveling device that is configured to be directly attached to the transmission case 10, and rotation from the left and right side clutches 21 is transmitted to the axle 23 in a straight traveling state. When the steering lever is tilted, one of the left and right side clutches 21 is disengaged, and the rotation of the differential shaft 32 of the differential mechanism 30 is transmitted to the corresponding axle 23 to turn.
The rotation from the differential mechanism 30 is transmitted to the axle 23 as a rotation synchronized with the rotation transmitted from the left and right side clutches 21 when the rectilinear clutch 48 is engaged when traveling straight, and the turning clutch 60 is engaged. When the rotation transmitted to the case 31 is changed, the axle 23 on the inside of the turn is driven and rotated slower than the axle 23 on the outside of the turn, the brake turn is performed by stopping the axle on the inside of the turn, A spin turn or the like can be performed by driving and rotating the axle on the inside opposite to the axle on the outside of the turn, and the straight clutch 48 or the turning clutch of the left and right side clutch 21, the differential mechanism 30 and the turning transmission device 40. Since 60 is always operating, the temperature of the lubricating oil rises, and the pump that drives this lubricating oil by rotation from any of the rotating shafts of the transmission case 10 And oil supply to the oil cooler 65, are constantly cooled by 6.
In the present invention, one end of the one side connection hose 67 and the other side connection hose 68 is connected to the oil cooler 65, and the other end of the one side connection hose 67 and the other side connection hose 68 is connected to the transmission case 10. The pump 66 is provided in an intermediate portion of either the one side connection hose 67 or the other side connection hose 68, and the one side other end 69 of the one side connection hose 67 connected to the mission case 10 and the mission case 10. The other end portion 70 of the other side connection hose 68 connected to is a transmission mechanism of a traveling device disposed at substantially the same height position, and the pump 66 is a mission that reverses forward and reverse during forward travel and reverse travel. Since it is operated by the rotation of the case 10, the suction oil supply route and the discharge oil supply route are separately required and need to be switched. One side other end 69 of the arranged one side connection hose 67 and the other side other end 70 of the other side connection hose 68 serve as a suction port and a projecting port, respectively. The connecting hose 67 is circulated by the other end 69 on the one side and the connecting hose 68 on the other side.
Further, in the present invention, the pump 66 is a transmission mechanism of a traveling device attached to the transmission case 10 via the plate 73, and foreign matter is mixed in the lubricating oil, so that the pump mounting surface can be damaged. Even in such a case, the plate 73 may be replaced.

According to the first aspect, the lubricating oil in the mission case 10 is always fed by the pump 66 and can be cooled by the oil cooler 65 while the rotating shaft in the mission case 10 is rotating. However, it is possible to rationally solve the problem by attaching to the mission case 10 a rotation transmission mechanism for always operating during rotation. In particular, the cooling efficiency of the differential mechanism 30 and the turning transmission device 40 is improved, the life of the turning transmission device 40 is extended, and the efficiency is improved because the oil of another hydraulic system is not used.
In claim 2, the negative element that the rotation of the rotating shaft in the mission case 10 is reversed in the reverse direction in claim 1 is solved by devising the connection height of the one side connection hose 67 and the other side connection hose 68. It is possible to simplify the configuration and reduce the cost.
In claim 3, even if the pump 66 is attached to the mission case 10 and the pump mounting surface is damaged due to foreign matter mixed in, the plate 73 can be replaced, and maintenance is good.

An embodiment of the present invention will be described with reference to the drawings. 1 is a traveling device for a working machine such as a combine, 2 is a threshing device, 3 is a control unit provided on one of the left and right sides of the aircraft traveling direction, and 4 is a cutting unit. A conveying device 6 is provided on the side of the control unit 3 to convey the cereals harvested by the reaping unit 4 to the cereal supply and conveying device 5 of the threshing device 2.
A transmission (transmission case) 10 transmits the rotation from the engine to the traveling device 1. The traveling hydraulic main transmission (hydro) shifts the traveling speed by continuously changing the rotation from the engine to the upper position. (Static transmission) is provided (not shown).

Reference numeral 11 denotes an intermediate shaft to which the rotation shifted by the traveling hydraulic main transmission is transmitted. In the embodiment, a sub-transmission that shifts by a combination in which the rotation of the traveling hydraulic main transmission is selectively meshed with a plurality of gears. It consists of a shaft. The intermediate shaft (sub-transmission shaft) 11 is provided with a group of gears 12 so as to rotate integrally. The gear group 12 selectively meshes with the gear group 14 of the counter shaft 13 on the lower side of the intermediate shaft 11. The counter shaft 13 is provided with a center gear 15, and the center gear 15 is always meshed with a passive gear 17 fixed to the side clutch shaft 16.
A side clutch gear 18 is slidably provided on the side clutch shaft 16, and a clutch pawl 19 provided on a part of the side clutch gear 18 is detachably fitted to a clutch pawl 20 of the passive gear 17, so A clutch 21 is formed. The configuration of the left and right side clutch 21 is arbitrary and is not limited to the embodiment.
The side clutch gear 18 meshes with an intermediate gear 24a provided loosely on the intermediate shaft 25. An intermediate gear 24 b that rotates integrally with the intermediate gear 24 a is loosely fitted to the intermediate shaft 25, and the intermediate gear 24 b meshes with the axle gear 24 provided on the left and right axles 23.

  Accordingly, the differential mechanism 30 is provided in the vicinity of the side clutch shaft 16. The differential mechanism 30 is provided with a case 31 rotatably in the mission case (mission) 10, a differential shaft 32 is provided in the case 31, and the rotational speed of the differential shaft 32 is adjusted by changing the rotational speed of the case 31 itself. Change and output in reverse. A left and right bevel gear 33 is provided at the tip of the differential shaft 32 so as to be opposed to each other. The left and right bevel gears 33 are respectively meshed with intermediate bevel gears 35 that are rotatably attached to a case shaft 34 fixed to the case 31, and a case rotation passive gear 36 is provided on the outer periphery of the case 31. The provided turning transmission gear 37 transmits the rotation to the axle gear 24.

The differential mechanism 30 changes the rotation of the case 31 via the case rotation passive gear 36, shifts the rotation output from each of the differential shafts 32, and causes the traveling device 1 to turn.
In this case, by changing the rotation transmitted to the case 31, a slow turn performed by driving and rotating the axle on the inside of the turn slower than the axle on the outside of the turn, and a brake turn performed by stopping the axle on the inside of the turn, A spin turn can be made by driving and rotating the axle on the inside of the turn opposite to the axle on the outside of the turn by a predetermined ratio, and the number of revolutions transmitted to the case 31 can be set arbitrarily.
Thus, in the vicinity of the differential mechanism 30, a turning transmission device 40 for transmitting the rotation to the case rotation passive gear 36 is provided.
Reference numeral 41 denotes a case rotation output gear that always meshes with the case rotation passive gear 36 and is provided on the turning intermediate shaft 42 so as to rotate integrally with the turning intermediate shaft 42.

In this case, the side clutch shaft 16, the differential shaft 32 of the differential mechanism 30, and the turning intermediate shaft 42 are arranged so that the axial directions thereof are the left and right directions, respectively, and the case rotation output gear 41 is connected to the turning intermediate shaft 42. Provided on the side (inner side) close to the control unit 3.
On the other hand, the inner peripheral boss 43 is fitted to the case rotation output gear 41 on the side (outer side) of the turning intermediate shaft 42 away from the control unit 3 so that only the rotation is possible. On the side close to 3, a linear input gear 44 is provided so as to rotate integrally. The rectilinear input gear 44 is always meshed with the passive gear 17 that is meshed with the center gear 15 at all times.
Thus, the casing 46 is positioned on the outer peripheral portion of the turning intermediate shaft 42, and the casing 46 rotates integrally with the outer peripheral portion of the turning intermediate shaft 42 on the side farther from the control unit 3 than the inner peripheral boss 43. Provide to do. A disk is provided on the inner periphery of the casing 46, and the disk is configured so as to contact the disk provided on the outer periphery of the inner peripheral side boss 43 so as to be detachable.

The rotation of the center gear 15 is transmitted to the rectilinear input gear 44 via the passive gear 17, and the rectilinear input gear 44 and the inner peripheral boss 43 are integrally rotated, so that the left and right intermediate claw portions of the inner peripheral boss 43 are rotated. Rotation is transmitted to the outer inner boss 43a on the outer side, and the rotation of the outer inner boss 43a on the outer side is transmitted to the drum 49 provided on the outer periphery of the casing 46 via the linear clutch 48. The case rotating gear 41 is rotated by integrally rotating the turning intermediate shaft 42 via the spline portion 49a.
In this case, since the straight traveling clutch 48 is always engaged, the rotation transmitted to the left and right axles 23 via the differential mechanism 30 and the rotation transmitted via the left and right side clutch 21 are the same in the differential mechanism 30. Thus, the mechanical lock is prevented. Therefore, the case 31 is rotated so that each of the differential shaft 32 and the case 31 has the same rotation speed, and the case is operated for straight travel. Is transmitted to the left and right axles 23 via the turning transmission gear 37 and travels straight.

A drum 49 is provided on the outer periphery of the casing 46 on the side away from the control unit 3, a piston 50 is provided on the base side of the drum 49 (side away from the control unit 3), and the piston 50 and the mission case mission 10 are controlled. An outer cylinder chamber 52 is formed between the metal member 51 on the side farther from the portion 3.
An outer plate 55 is provided on the side (outer side) of the drum 49 away from the control unit 3. When oil is supplied from the oil supply port 56 to the outer cylinder chamber 52, the piston 50, the drum 49, and the outer plate 55 are connected to the control unit 3. To move the disk of the casing 46 away from the disk on the outer periphery of the inner boss 43, and the clutch 48 for straight running is disengaged.
An inner plate 57 is provided on the drum 49 on the inner side of the outer plate 55, and a spring 58 is provided between the outer plate 55 and the inner plate 57 to urge the linear clutch 48 in the entering direction. Is always energized.

An outer peripheral boss 59 is provided on the outer periphery of the inner peripheral boss 43 so as to be rotatable only. The outer peripheral boss 59 is located closer to the control unit 3 than the outer plate 55 (inner side), and the disk provided on the outer periphery of the outer peripheral boss 59 can be detachably attached to the disk provided on the inner periphery of the casing 46. The turning clutch 51 is configured so as to abut.
Accordingly, the straight-travel clutch 48 is disposed outside the casing 46 in the axial direction, and the turning clutch 60 is disposed inside.
Accordingly, the turning input gear 61 is provided on the outer peripheral boss 59 outside the linearly moving input gear 44 of the inner peripheral boss 43, and the turning intermediate gear 62 is engaged with the turning input gear 61.
When the clutch 60 for turning is fed to the outer cylinder chamber 52 and the clutch 48 is turned off, the turning clutch 60 is turned on, the turning intermediate gear 62 → the turning input gear 61 → the outer boss 59 → the turning clutch 60. → Case 46 → Drum 49 → Spline portion 49a → Transfer to the case rotating gear 41 via the turning intermediate shaft 42, and operate the differential mechanism 30 for turning.

That is, the linear clutch 48 and the turning clutch 60 are arranged side by side in the moving direction of the respective disks in the casing 46 so that when one of them is disengaged, the other is engaged. The outer cylinder chamber 52 is provided on the cut side of the moving direction, the spring 58 is provided on the entering side of the disc of the linear clutch 48, and when the oil is supplied to the outer cylinder chamber 52, the piston 50 moves the drum 49 and the outer plate 55. Then, the disk of the casing 46 is detached from the disk on the outer periphery of the inner peripheral boss 43, the straight traveling clutch 48 is disengaged, and the inner plate 57 is moved by the movement of the casing 46 and the turning clutch 60 is engaged.
In this case, the turning clutch 60 changes the disk contact pressure so that the rotation transmission “0” is continuously transmitted from the cut-off state (the straight-travel clutch 48 is engaged and the contact pressure is “0”) to the engaged state. As a result, the rotation of the case 31 of the differential mechanism 30 is changed so as to perform a slow turn, a brake turn, and a spin turn as described above.

Therefore, the turning transmission device 40 receives the rotation clutch 60 for switching the transmission of rotation for operating the differential mechanism 30 for turning, and the rotation transmission for operating the differential mechanism 30 for straight running. A straight traveling clutch 48 that is connected and detached is provided.
In the embodiment, the brake turn is performed by stopping the rotation of the axle 23 on the inner side of the turn by decelerating the differential mechanism 30 to 1/2, and the braking of the airframe is performed by changing the traveling speed described later. Perform by lever. A separate parking brake pedal may be provided.
Therefore, the turning input gear 61 and the turning intermediate gear 62 and the case rotating gear 41 are set to a gear ratio capable of transmitting a rotation having a predetermined turning radius with respect to the rotation transmitted from the side clutch 21 to the axle 23. (When the turning clutch 60 is in the fully engaged state, the differential mechanism 30 is set so as to be capable of output for spin turn, and the axle on the inside of the turn with respect to the rotation of the axle 23 on the outside of the turn by the gear ratio. If the rotation of 23 is reversed by 1/3, it is preferable that the turning is smooth.

In this case, the turning transmission device 40 arranges the turning input gear 61 on the side farthest from the steering unit 3 (outside) with respect to the case rotation output gear 41 and the straight-traveling input gear 44.
With this configuration, the turning input gear 61 having a large reduction ratio can be made most compact in the rotation transmission gear setting of the turning transmission device 40 and the differential mechanism 30, and the overall size can be reduced.
In addition, the case rotation passive gear 36 of the differential mechanism 30 is provided on the side (inner side) of the case 31 that is close to the control unit 3 with respect to the case 31. Thereby, the accommodation of the turning input gear 61 of the turning transmission device 40 can be made more compact, and the whole can be made smaller.
In other words, the distance between the differential shaft 32 and the turning intermediate shaft 42 is determined by the position of the case rotation passive gear 36, but by being provided inside the case rotation passive gear 36, the side rotation turning transmission device 40 can be overlapped. The distance between the differential shaft 32 and the turning intermediate shaft 42 can be shortened, and the overall size can be reduced.

The case 31 of the differential mechanism 30 is disposed below the turning intermediate shaft 42 provided with the turning transmission device 40. When the case 31 of the differential mechanism 30 is arranged in this way, it is not necessary to provide a counter shaft between the turning transmission device 40 and the differential mechanism 30, which contributes to weight reduction and cost reduction.
Therefore, the turning input gear 61 is provided outside the differential case 31 (side away from the control unit 3). By providing the swivel input gear 61 outside the differential mechanism 30, even if the swivel input gear 61 and the differential mechanism 30 are increased in size, the swivel input gear 61 can be configured without widening the longitudinal axis. The whole can be made compact in the vertical direction, improving the running performance in the wet fields. Further, the degree of freedom in designing the turning input gear 61 and the turning intermediate gear 62 of the side clutch shaft 16 is widened, and the range of selection of the gear ratio for setting the turning ratio of the spin turn can be widened.

  The turning intermediate gear 62 is provided with the clutch pawl 20 of the passive gear 17 inside the turning intermediate gear 62. Of the left and right side clutch 21, the side on which the turning intermediate gear 62 is provided has an increased axial length (left and right width). However, the turning intermediate gear 62 is disposed on the outer periphery of the clutch pawl 20 of the passive gear 17. Since the clutch claw 19 of the side clutch gear 18 is inserted inside the turning intermediate gear 62 and the side clutch 21 is engaged, a compact configuration can be achieved.

Accordingly, an oil cooler 65 for cooling the lubricating oil in the mission 10 is provided at a desired position of the machine body, and a pump 66 for feeding the lubricating oil to the oil cooler 65 is directly attached to the mission 10.
The pump 66 is attached to the mission 10 so as to operate with the rotation of any of the rotary shafts provided in the mission 10 as a drive source.
That is, the pump 66 is attached to the mission 10 so that no special fixing member is required, and the mission 10 which is the mounting surface of the pump 66 is a machining center for processing the outer peripheral surface, bearings and holes of other missions 10. Since they can be processed together, manufacturing is also simplified. Further, since the pump 66 uses the rotation of one of the rotation shafts of the transmission 10 as a drive source, a special rotation transmission mechanism is not required, the configuration can be simplified, and the cost can be reduced.
Further, since the pump 66 is attached to the transmission 10, the attachment accuracy can be improved and the suction efficiency of the pump 66 can be maximized.
Further, in the transmission 10 of the present application, the differential mechanism 30 and the turning transmission device 40 stir the lubricating oil even when traveling straight, and the temperature of the lubricating oil is likely to rise. However, the pump 66 directly attached to the transmission 10 is efficient. The oil cooler 65 is well fed to ensure cooling.

Thus, one end of one side connection hose 67 and the other side connection hose 68 is connected to the oil cooler 65, and the other end of the one side connection hose 67 and the other side connection hose 68 is connected to the mission 10, The pump 66 is provided at an intermediate portion of either the connection hose 67 or the other side connection hose 68.
In this case, the one side other end 69 of the one side connection hose 67 connected to the mission 10 and the other side other end 70 of the other side connection hose 68 connected to the mission 10 are arranged at substantially the same height.
Since the pump 66 is attached to the end of the counter shaft 13 and is operated by the rotation of the counter shaft 13, the other end of the one side connection hose 67 and the other side connection hose 68 connected to the mission 10 has a positive rotation of the counter shaft 13. Although it changes into a discharge port and a suction port by reversing, since it arrange | positions in the substantially same height position in this application, respectively, even if a discharge port and a suction port interchange, it operate | moves correctly.
That is, by using the rotation of any of the rotary shafts provided in the mission 10 as the drive source of the pump 66, the cost can be reduced, and the rotational direction of any of the rotary shafts of the mission 10 can be switched. This is dealt with reasonably by devising the connection between the other end of the side connection hose 67 and the other side connection hose 68 and the mission 10.

Therefore, the other end portion 69 of the pump 66 and the one side connection hose 67 and the other end portion 70 of the other side connection hose 68 are located on the side surface of the mission 10 near the control unit 3 or near the control unit 3. Provide on the front.
The other end 69 of the pump 66 and the one side connection hose 67 and the other end 70 of the other side connection hose 68 are connected to the side surface of the mission 10 on the side of the control unit 3 or the front side of the mission 10 near the control unit 3. By providing it, the piping can be designed in a compact manner, and the connection work becomes easy.
That is, hydraulic piping and valves can be concentrated in the vicinity of the control unit 3 and the engine (not shown) provided below the control unit 3, and by providing the pump 66 and the like in the transmission 10 on the side facing them. , Making the connection work easier.

Therefore, a plate 73 is provided on the surface of the pump 66 on the side of the transmission 10, and the pump 66 is attached by bringing the plate 73 into contact with the transmission 10.
That is, the pump 66 is detachably attached to the mission 10 (divided configuration), and even if foreign matter enters the pump 66 and the pump mounting surface is damaged, the mission 10 needs to be replaced. It is sufficient to replace the plate 73 and maintainability is good.

As described above, since the straight-travel clutch 48 is always in the engaged state, the differential mechanism 30 rotates through the differential mechanism 30 to the left and right axles 23 and through the left and right side clutches 21. To prevent the mechanical lock, so that the rotational speeds of the side clutch shaft 16 and the differential shaft 32 are controlled to be the same when traveling straight. The side clutch shaft 16 and the differential shaft 32 are each provided with a sensor 74 that detects the number of rotations.
In order to control the rotational speeds of the side clutch shaft 16 and the differential shaft 32 to be the same during straight travel, the side clutch shaft 16 and the differential shaft 32 are traveled from straight travel through a slow turn to a spin turn (excluding a brake turn). Since each of them does not become zero rotation and rotates in the same direction, a sensor 74 is provided on each of the side clutch shaft 16 and the differential shaft 32, thereby preventing erroneous detection in detection of the rotation speed by the sensor 74. it can. Reference numeral 75 denotes a rotating body for the sensor 74 to detect the rotational speed.

Each of the sensors 74 is provided on the outer surface of the projecting portion 76 projecting laterally from the side surface of the mission 10, and detects the rotation of the rotating body 75 provided in the projecting portion 76. Configure as possible.
That is, the space near the side surface of the mission 10 is limited, and if the maintenance of the sensor 74 is performed only from the side surface direction of the mission 10, the work space is narrow and not easy, but the sensor 74 is placed beside the side surface of the mission 10. When protruding, the sensor 74 can be easily visually recognized directly from the front side, and maintenance work is facilitated.

In this case, if the sensor 74 is provided on the counter-steering unit 3 side, maintenance from the outside of the airframe is also possible.
In particular, as shown in FIG. 7 and FIG. 8, when the cutting unit 4 is configured to be rotated about the vertical axis 74 provided on the airframe so that the periphery of the mission 10 can be opened, the sensor 74 is arranged on the front side and the side. It is easy to see from the side, and maintenance work becomes easy.

The side view of a combine. A schematic front view of the mission case in a deployed state. The longitudinal cross-sectional schematic of the clutch part for rotation of the unfolding state of a mission case. A side view of a mission case. A schematic front view of the mission case in a deployed state. The same side view. The perspective view of the combine which rotated the cutting part. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Traveling device, 2 ... Threshing device, 3 ... Steering part, 4 ... Harvesting part, 5 ... Grain supply supply device, 6 ... Conveyance device, 10 ... Mission (mission case), 11 ... Intermediate shaft (sub-transmission shaft) , 12 ... Gear group, 13 ... Counter shaft, 14 ... Gear group, 15 ... Center gear, 16 ... Side clutch shaft, 17 ... Passive gear, 18 ... Side clutch gear, 19 ... Clutch pawl, 20 ... Clutch pawl, 21 ... Left and right side clutches 23 ... axle 24 ... axle gear 30 ... differential mechanism 31 ... case 32 ... diff shaft 33 ... left and right bevel gear 34 ... shaft 35 ... intermediate bevel gear 36 ... case rotation passive gear , 37... Rotation transmission gear, 40... Rotation transmission device, 41. Case rotation output gear, 42... Rotation intermediate shaft, 43 ... Inner peripheral boss, 44. Clutch, 49 ... do 50 ... piston, 51 ... metal member, 52 ... outer cylinder chamber, 55 ... outer plate, 56 ... oil feeding port, 57 ... inner plate, 58 ... spring, 59 ... outer boss, 60 ... turning clutch, 61 ... turning input gear, 62 ... turning intermediate gear, 65 ... oil cooler, 66 ... pump, 67 ... one side connection hose, 68 ... other side connection hose, 69 ... one side other end, 70 ... other side other end Part 73 ... plate 74 ... sensor 75 ... rotating body.

Claims (3)

Left and right side clutches 21, 21 for transferring power to the left and right axles 23, 23 of the traveling device 1 are provided, and a differential mechanism 30 for transmitting power to the axle 23 cut off of the left and right side clutches 21, 21 is provided. And a linear clutch 48 that transmits to the left and right axles 23, 23 when the differential mechanism 30 travels straight in synchronization with the rotation from the left and right side clutches 21. An oil cooler that cools the lubricating oil in the case 10 of the transmission in a transmission that includes a turning transmission device 40 that has a turning clutch 60 that transmits rotation to the left or right turning inner axle 23 during turning. 65 is provided at a desired position of the machine body, and the oil cooler 65 is supplied by a pump 66 that feeds oil using any rotation shaft in the transmission case 10 as a drive source. Configure Namerayu path, the pump 66 is a transmission mechanism of the traveling device constructed by attaching directly to the transmission case 10. In claim 1, one end of one side connection hose 67 and the other side connection hose 68 is connected to the oil cooler 65, and the other end of the one side connection hose 67 and the other side connection hose 68 is connected to the transmission case 10. The pump 66 is provided in an intermediate portion of either the one side connection hose 67 or the other side connection hose 68, and the one side other end 69 of the one side connection hose 67 connected to the mission case 10 and the mission case 10 are provided. The other side other end portion 70 of the connected other side connection hose 68 is a transmission mechanism of the traveling device arranged at substantially the same height position. The transmission mechanism of the traveling device according to claim 1 or 2, wherein the pump 66 is attached to the transmission case 10 via a plate 73.

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