JPH104750A - Operation apparatus of combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability in the speed-changing operation and the swing operation of a vehicle and the workability in swinging work. SOLUTION: This operation apparatus of a combine-harvester is constructed so that the speed changing of running and turning of a machine body are carried out by operating a hydraulic speed-changing mechanism 25 with a speed-change lever 68 and a hydraulic steering mechanism with a stirring handle 19. This apparatus is provided with an interlocking means for integrally linking and interlocking a speed-changing member operated by a speed-changing lever and a steering member 81 operated by the steering handle 19. The apparatus is also provided with a decelerating means on the speed of the vehicle for reducing the running speed according to the steering amount of the steering handle 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device provided with a main shift lever for shifting a traveling speed in a combine.

[0002]

Conventionally, the hydraulic traveling mechanism is operated by a shift lever, and the hydraulic steering mechanism is operated by a steering handle.
The aircraft is turning. However, in the case of such a conventional means, two operations are always required and the work is not only troublesome, but also it is extremely difficult to secure the accuracy required for each adjustment work. In addition, during the turning work, there is a troublesome work of reducing the traveling speed to a safe speed.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to operating a hydraulic transmission mechanism with a shift lever and operating a hydraulic steering mechanism with a steering handle to shift the traveling speed and turn the body. In the combine operating device described above, there is provided interlocking means for integrally linking a shift operation member operated by a shift lever and a steering operation member operated by a steering handle, and operating the steering handle. Providing vehicle speed reduction means for reducing the traveling speed in accordance with the direction amount, for example, by accurately outputting the required shift and turning operation force from each of the operation members integrally provided at one position near the driving operation unit, The aim is to improve operability and work efficiency in traveling shifts and turning work, and during turning work, the work is automatically decelerated to a safe turning speed according to the steering amount, and good work is performed. It is intended.

Further, a steering detection link for detecting a steering amount in conjunction with a steering handle is provided, and the detection link is linked to a speed change operation member, and deceleration control of the vehicle speed according to the steering amount is performed by simple detection means. And the workability can be improved.

Further, a detection link is interlockedly connected to the speed change operation member via a speed reduction link mechanism, so that a simple link structure is employed, and the speed reduction control of the vehicle speed in accordance with the steering amount can be easily performed. Workability can be improved.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view of a traveling speed change and steering operation unit, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view of the combine, (1) is a track frame on which a traveling crawler (2) is mounted, (3) is a machine frame installed on the track frame (1), (4) is a threshing machine which stretches a feed chain (5) to the left side and incorporates a handling cylinder (6) and a processing cylinder (7). A certain threshing unit, (8) a cutting unit provided with a cutting blade (9) and a grain culm transport mechanism (10), (11) a hydraulic cylinder for raising and lowering the cutting unit (8) via a cutting frame (12), (13) a straw processing unit that faces the end of the straw chain (14), (15) a grain tank that carries the grains from the threshing unit (4) through a fryer (16), (17) Is a discharge auger for carrying out the grains of the tank (15) outside the machine,
(18) is a round steering handle (19) and a driver's seat (2)
An operation cabin provided with 0) and the like, and (21) is an engine provided below the operation cabin (18), is configured to continuously cut and thresh grain culm.

As shown in FIG. 4, the traveling crawler (2)
The transmission case (22) for driving the vehicle is a traveling hydraulic continuously variable transmission mechanism (25) which is a main transmission mechanism including a pair of a first hydraulic pump (23) and a first hydraulic motor (24).
And a turning hydraulic continuously variable transmission mechanism (28), which is a steering mechanism including a pair of second hydraulic pumps (26) and a second hydraulic motor (27), and an output of the engine (21). The input shaft (23) of the first hydraulic pump (23) is connected to the shaft (21a).
a) is linked via a transmission belt (29), and the input shaft (26a) of the second hydraulic pump (26) is connected via the transmission belt (30) to the input shaft (23a) of the first hydraulic pump (23). It is linked and linked.

An auxiliary transmission mechanism (32) and a differential mechanism (3) are connected to an output shaft (31) of the first hydraulic motor (24).
3) The driving wheels (34) of the traveling crawler (2) are interlocked via 3). The differential mechanism (33) has a pair of symmetrical planetary gear mechanisms (35) and (35). The planetary gear mechanism (35) includes one sun gear (36) and three planetary gears (3) meshing on the outer periphery of the sun gear (36).
7) and a ring gear (38) meshing with these planetary gears (37).

The planetary gear (37) is rotatably supported by a carrier (41) of a carrier shaft (40) coaxially with a sun gear shaft (39), and sandwiches left and right sun gears (36) and (36). The left and right carriers (41) are arranged to face each other, the ring gear (38) has internal teeth meshing with each planetary gear (37), and is arranged coaxially with the sun gear shaft (39).
0) is rotatably supported.

A traveling hydraulic continuously variable transmission mechanism (2)
5) Controlling the forward / reverse rotation and rotation speed of the first hydraulic motor (24) by adjusting the angle change of the rotary swash plate of the first hydraulic pump (23), and the rotation output of the first hydraulic motor (24). From the transmission gear (42) of the output shaft (31) to each gear (4
3) A center gear (46) fixed to the sun gear shaft (39) via (44) (45) and the auxiliary transmission mechanism (32).
To rotate the sun gear (36). The auxiliary transmission mechanism (32) includes an auxiliary transmission shaft (47) having the gear (45) and a vehicle speed sensor shaft (49) having a gear (48) meshing with the center gear (46). A pair of low-speed gears (50) and (48) and a medium-speed gear (51) between the shaft (47) and the sensor shaft (49).
(52) -High speed gears (53) and (54) are provided to enable switching between low speed, medium speed and high speed by sliding operation of the gear (51) at the center position. The sensor shaft (49) has a vehicle speed detecting gear (5).
5) and a vehicle speed sensor (56) for detecting the vehicle speed from the rotation speed of the gear (55). In addition, the PTO of the PTO shaft (57) that transmits the rotational force to the work equipment, etc.
The output shaft (31) is linked to the input gear (58) via a PTO transmission gear mechanism (59).

The first hydraulic motor (24) transmitted to the sun gear shaft (39) via the center gear (46).
Is transmitted to the carrier shaft (40) through the left and right planetary gear mechanisms (35), and the rotation transmitted to the carrier shaft (40) is transmitted to the pair of left and right reduction gears (6).
0) and (61) to the left and right wheel shafts (34a) of the left and right drive wheels (34), respectively.

Further, a hydraulic stepless speed change mechanism for turning (2)
8) The forward / reverse rotation of the second hydraulic motor (27) and the control of the rotation speed are performed by adjusting the angle change of the rotary swash plate of the second hydraulic pump (26). The output shaft of the second hydraulic motor (27) The rotation output is transmitted from the output gear of (62) to the input gears (65a) and (65b) of the turning input shaft (64) via the gear transmission mechanism (63), and the outer teeth of the left ring gear (38) are Directly and to the external teeth of the right ring gear (38) via the reverse rotation gear (67) of the reverse rotation shaft (66), the right and left ring gears (38) are rotated when the second hydraulic motor (27) rotates forward. ) Are configured to rotate the left gear (38) in the reverse direction and the right gear (38) in the forward direction at the same left and right rotation speeds.

When the driving of the first hydraulic pump for traveling (23) is performed in a state where the driving of the second hydraulic pump for turning (26) is stopped and the left and right ring gears (38) are stationary and fixed, The rotation output from the first hydraulic motor (24) is transmitted from the center gear (46) to the left and right sun gears (36) at the same speed, and the planetary gears (37) and the carrier (41) of the left and right planetary gear mechanisms (35) and the reduction gear. Gear (60)
(61) is transmitted to the left and right wheel sets (34a) at the same rotational speed in the same rotational direction in the left and right directions, so that the aircraft travels straight forward and backward. On the other hand, when the drive of the first hydraulic pump (23) for traveling is stopped and the left and right sun gears (36) are stationary and fixed, the second hydraulic pump (26) for turning is driven forward and reverse to rotate the left hydraulic pump (23). The planetary gear mechanism (35) rotates in reverse or forward,
In addition, the right planetary gear mechanism (35) rotates forward or reverse to make the driving direction of the left and right traveling crawlers (2) forward and backward, thereby causing the airframe to spin left or right on the spot.

When the first hydraulic pump (23) for traveling is driven and the second hydraulic pump (26) for turning is driven to turn the body left and right, turning with a large turning radius is enabled. The turning radius is determined according to the speed of the left and right traveling crawlers (2).

As shown in FIGS. 1, 5 to 12, a main transmission lever (68) connected to the traveling hydraulic continuously variable transmission mechanism (25) and a turning hydraulic continuously variable transmission mechanism (28). )
And a steering handle (19), which is linked to the gearshift and turning interlocking mechanism (69), which is an interlocking means, and the interlocking mechanism (69) is linked to a traveling speed change and steering link mechanism (70) (71). The control levers (72) (7) of the continuously variable transmission mechanism (25) (28) for traveling and steering through
Linked to 3).

The interlocking mechanism (69) includes a rotating plate (75) for supporting the base bent portion (68a) of the main transmission lever (68) on the cylinder shaft (74) so as to be able to swing left and right, and a body side. A fixed mounting plate (78) fixedly mounted on the frame (76) of the main body and supporting the rotating plate (75) rotatably back and forth via a first pivot (77) in the left-right direction; and the pivot (77). A) a speed change operation member (80) that is connected to a rotation plate (75) via a second pivot (79) in the front-rear direction orthogonal to the second direction and is provided rotatably around the shaft (79); A steering operation member (81) rotatably connected around an axis of the pivot (79), and a second pivot (79) of the speed change and steering operation members (80) (81).
Means that the operation output sections (80a) (81a) at the eccentric position are linked to the speed change and steering link mechanisms (70) (71).

The speed change and steering link mechanism (70) (7)
1) is the frame (7) at the rear of the interlocking mechanism (69).
6) A speed change arm (84) supported on the side of the swing shaft (82) via a swing cylinder shaft (83) outside the swing shaft (82), and a steering arm (85) having a base end fixed to the swing shaft (82). And the output unit (8
0a) The universal joint shaft (8) connecting between the operation output shafts (86) (87) of (81a) and the arms (84) (85).
8) (89), the cylinder shaft (83) and the swing shaft (82)
Speed change and steering output arm (90) (9)
1) and a rotation fulcrum shaft (9) of the driving cabin (18).
First swing and steering first swing arm (95) provided rotatably on an intermediate shaft (94) attached to the fulcrum bearing (93) of 2).
(96) and a universal joint type first rod (97) (9) for shifting and steering, which connects between the respective ends of the output arm (90) (91) and the first swing arm (95) (96).
8), a speed change and steering second swing arm (99) (100) provided on the intermediate shaft (94) and integrally connected to the first swing arm (95) (96), and the transmission case ( 22) A spindle (10) attached to the upper bearing plate (101)
The transmission and steering cylinder shaft (10) rotatably supported by 2)
3) (104), and first ends of the first swing arms (105) and (106) and the second swing arms (99) and (100) having bases fixed to the cylindrical shafts (103) and (104). Speed change and steering universal joint type second rod (107) (1
08), and a speed change for connecting the second swinging arms (109) (110) having their base ends fixed to the cylinder shafts (103) (104) and the respective distal ends of the control levers (72) (73). Steering universal joint type third rod (111) (11)
2), the traveling control member (72) is rotated by the rotation of the traveling operation member (80) around the first pivot (77), and the traveling second pivot (79) is moved around the traveling second pivot (79). The steering control lever (73) is operated by the rotation of the steering operation member (81) to perform the speed change and the steering control.

On the other hand, a gear (114) is provided on a handle operation shaft (113) at the lower end of the steering handle (19), and a sector gear (11) attached to the rear rotation shaft (115).
6) meshing the gear (114) with the steering shaft (117) disposed below the position of the main shift lever (68).
The first swing arm (118) and the rotating shaft (115)
A universal joint type steering first rod (12) serving as a steering link mechanism is provided between each of the distal ends of the output arm (119) and the output arm (119) having the base end fixed thereto.
0), and a second swing arm (121) integrated with the first swing arm (118) of the steering shaft (117),
The universal joint shaft (89) is connected to the front end of the universal joint type steering second rod (122) via the handle (1).
The steering operation member (81) is configured to rotate around the second pivot (79) by the rotation operation of (9).

A neutral positioning plate (123) is provided below the gear (114) of the handle operation shaft (113), and a projecting shaft (124) on the lower surface of the positioning plate (123) is provided.
To one end of a steering detection link (125), and a reduction arm shaft (12) disposed on the right side of the rotation shaft (115).
6) the first swing arm (127) and the detection link (1).
25) is connected to the other long hole (125a) via a shaft (128), and the reduction arm (129) of the steering shaft (117) and the second swing arm (130) of the reduction arm shaft (126) are connected. ) Are connected by a universal joint type first deceleration rod (131) which is a deceleration link mechanism, and the rightmost deceleration transmission shaft (132) of the speed change operation member (80) is connected to the second deceleration transmission shaft (132).
The other end of the swing arm (130) is connected by a universal joint type second deceleration rod (133), and the larger the steering amount of the handle (19) in the running state, the larger the second deceleration rod (13).
3) is pulled downward to reduce the traveling speed.

The speed change and steering operation member (8)
0) (81) can be rotated around the axis.
9) and the universal joint (89a) of the steering arm (85) and the joint shaft (89) are positioned on the horizontal line (L1) in the front-rear direction, and the operation output shafts (86) (87) Joint part (88b) between the universal joint shaft (88) and the universal joint shaft (89)
(89b) and the first pivot (77) are connected to the line (L).
1) is located on a horizontal horizontal line (L2) orthogonal to the line (L2). Further, the universal joint (88a) between the transmission arm (84) and the joint shaft (88) and the joint (89a) are connected to the line (L2). ) Are positioned on the left and right horizontal lines (L3) parallel to the main shift lever (68) and the steering handle (19), even if one of them is operated when the neutral position is maintained. (81) is only rotated about the first and second pivots (77) and (79),
No operating force is applied to the joint shafts (88) and (89).

As shown in FIG. 8, when the operation member (80) is inclined back and forth by an angle (α1) (α2) about the first pivot (77) by the forward / reverse operation of the main shift lever (68), By operating the speed change arm (84) by pulling or pushing the joint shaft (88), the traveling speed is switched between forward and backward, and in this state as shown in FIG. 9 (when the main speed change lever (68) is other than neutral). ) Steering handle (19)
When the operation member (81) is tilted up and down by an angle (β1) (β2) about the second pivot (79) by the turning operation of the steering arm (85), the joint shaft (89) is pulled or pushed.
Is operated to turn the body left and right.
(Coupling shaft (89) even if turning operation is performed when the main shift is in neutral)
Is also moved on a conical surface centered on the line (L1), and the distance between the joints (89a) (89b) does not change. )

As shown in FIG. 11, the detection link (125) provided on the steering handle (19) moves the first swing arm (127) in the same direction regardless of the right or left turning operation from the neutral position. By rotating in the range of the angle (θ), the second deceleration rod (133) is always pulled,
When the operating member (80) at the time of the forward operation is inclined toward the angle (α1), the distance between the joints (88a) and (88b) is reduced, and the operating member (80) at the time of the reverse operation is moved to the angle (α).
2) When inclined to the side, the joints (88a) (88
b), the distance between them is increased, and the speed change arms (84) are respectively displaced toward the low speed side in the neutral direction to perform deceleration according to the turning amount.

Further, the first rods (97) and (98) and the swing arm (95) for transmitting the operating force for shifting and steering.
The center of the universal joint (97a) (98a) of (96)
The driving cabin (18) can be turned forward without removing these operation systems when shifting and steering is kept neutral by matching the position of the rotation fulcrum shaft (92) of the driving cabin (18). It is configured to be.

[0024]

As is apparent from the above embodiments, the present invention provides a hydraulic transmission mechanism (25) using a transmission lever (68).
In a combine operating device in which a hydraulic steering mechanism (28) is operated by a steering handle (19) to shift the running and turn the body, the operating device is operated by a shift lever (28). A speed change operation member (80);
An interlocking means (69) for integrally and interlocking a steering operation member (81) operated by the steering handle (19) is provided, and the traveling speed is adjusted according to the amount of steering of the steering handle (19). Since the vehicle speed reduction means for decelerating is provided, the required shifting and turning operation force is accurately output from each of the operation members (80) (81) integrally provided at one position near the driving operation unit, for example. It is intended to improve operability and work efficiency in running shifts and turning work, and to perform good work by automatically decelerating to a safe turning speed according to the steering amount during turning work. Can be.

Further, a steering detection link (125) for detecting a steering amount in conjunction with the steering handle (19) is provided, and the detection link (125) is interlocked to the speed change operation member (80). In addition, deceleration control of the vehicle speed according to the steering amount can be performed by the simple detection means, and the workability can be improved.

Further, the detection link (125) is interlocked to the speed change operation member (80) via the speed reduction link mechanism (131), and has a simple link structure, so that deceleration control of the vehicle speed according to the steering amount can be easily performed. The operability and workability can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a traveling speed change and steering operation unit.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

FIG. 4 is an explanatory diagram of a mission drive system.

FIG. 5 is an explanatory front view of an operation unit.

FIG. 6 is an explanatory plan view of an operation unit.

FIG. 7 is an explanatory side view of the operation unit.

FIG. 8 is an explanatory side view of the operation member.

FIG. 9 is an explanatory front view of the operation member.

FIG. 10 is an explanatory plan view of an operation member.

FIG. 11 is an explanatory plan view of a steering handle portion.

FIG. 12 is an explanatory plan view of a link mechanism.

[Explanation of symbols]

 (19) Steering handle (25) Hydraulic transmission mechanism (28) Hydraulic steering mechanism (68) Shift lever (69) Interlocking mechanism (Interlocking means) (80) (81) Operating member (125) Detection link (131) Deceleration Rod (reduction link mechanism)

Claims (3)

[Claims] 1. A combine operating device in which a hydraulic shift mechanism is operated by a shift lever, and a hydraulic steering mechanism is operated by a steering handle to shift the running and turn the body. A vehicle speed reduction device that includes interlocking means for integrally and interlocking a speed change operation member to be operated and a steering operation member to be operated by a steering wheel, and reduces a traveling speed according to a steering amount of the steering wheel. An operating device for a combine, wherein the operating device is provided. 2. The combine as claimed in claim 1, wherein a steering detection link for detecting a steering amount in conjunction with the steering handle is provided, and the detection link is linked to the speed change operation member. Operating device. 3. The combine operating device according to claim 1, wherein a detection link is linked to the speed change operation member via a deceleration link mechanism.