JP2532038Y2 - Interlocking device between main transmission and planting section - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an interlocking device between the main transmission and the planting section.

(Prior art) Conventionally, when the shift is changed to the reverse, the interlocking mechanism that raises the planting portion in conjunction with the operation, actual opening 57-203718
No. is used for a rice transplanter.

Further, as an example of a locking member (a detent or the like) of the planting elevating lever, the locking member (a detent or the like) of the planting elevating lever is released by a member such as a main clutch, and the planting elevating lever is returned upward. There was a technology called Japanese Utility Model Publication No. 63-148527.

(Problems to be Solved by the Invention) In the conventional interlocking mechanism as described above, when the main transmission is shifted to the reverse or the main clutch is disengaged, the locking of the planting elevating lever and the like is performed in conjunction with the shift. Due to the structure in which the members are held in a released state, the operation of inserting the bag into the bag after planting is heavy, the feeling is poor, and the operation of disengaging the main clutch is not smooth.

In addition, there is a disadvantage that the main shift lever is easily pulled out of the back position.

Therefore, the technical problem of the present invention is that the operation feeling of the main shift lever from the planted traveling shift position to the reverse shift position is good, and the main shift lever does not come off from the reverse shift position and secure operation is not possible. It is an object to obtain a possible transmission.

(Means for Solving the Problems) Therefore, the means for solving the above technical problems of the present invention is a riding method in which when the main shift lever is put into the reverse shift position, the planting portion is raised in conjunction with the operation. In the interlocking mechanism of the raising and lowering device of the planting part of the rice transplanter, the main shift lever and the planting raising and lowering lever are arranged so as to rotate coaxially, and the planting raising and lowering lever is moved in the ascending position direction by the biasing member. A lock mechanism composed of a main detent cam and a main detent arm for regulating the neutral position of the planting portion in the planting elevating lever, the lowering position, the lowering position, and the first speed position. A push-up bar for the main detent arm, which is provided on the same axis between the main shift lever and the planting elevating lever, releases the lock mechanism in conjunction with the main shift lever being put into the back position. A lock interlocking arm is provided, and a main detent cam of the lock mechanism and a back interlocking arm are provided coaxially with the planting elevating lever shaft, and the back interlocking arm is configured to be orthogonal to the main detent arm, The main detent arm is provided with a spring for applying a force acting in the axial direction so that a load in the pull-out direction does not act on the interlocking arm at the back shift position of the main transmission lever, and the back interlocking arm and the main transmission lever are integrally formed. The back interlocking arm is configured to be movable toward the pivot side of the main detent arm, and the back interlock arm is moved by moving the main shift lever integrated with the back detent arm to the reverse shift position to the reverse shift position. In conjunction with the main shift lever, it moves toward the pivot side of the main detent arm and splits with the roller of the back interlock arm. When the detent is released by pushing up the main detent arm against the worm, the planting elevating lever is returned to the raised position by urging, and the planting part is returned by returning the planting elevating lever to the raised position. And an interlocking device between the main transmission of the riding rice transplanter and the planting section.

(Effects of the Invention) According to this technical means, the main transmission lever and the planting elevating lever are arranged so as to rotate coaxially, and the planting elevating lever is moved in the ascending position direction by the urging member. A lock mechanism comprising a main detent cam and a main detent arm for regulating a neutral position, a lowering position, a lowering position, and a first speed position of the planting portion of the planting elevating lever is configured to be constantly driven. A back interlocking arm for pushing up a main detent arm which is provided on the same axis between the lever and the planting elevating lever, and which releases the lock mechanism in conjunction with the locking mechanism being put into the back position of the main transmission lever. And the main detent cam of the lock mechanism and the back interlocking arm are provided coaxially with the planting elevating lever shaft, and the back interlocking arm is orthogonal to the main detent arm. The main detent arm is provided with a spring on which a force acting in the axial direction acts so as to prevent a load in the pull-out direction from acting on the interlocking arm at the back shift position of the main shift lever. The lever is integrally configured and the back interlock arm is configured to be movable toward the pivot side of the main detent arm, and the main interlock lever integrated with the back interlock arm is moved to the reverse shift position to enter the back shift position. The back interlock arm moves toward the pivot side of the main detent arm in conjunction with the main shift lever, and the detent is released by pushing up the main detent arm against the spring with the roller of the back interlock arm to release the plant. The lifting lever is returned to the raised position by urging, and the planting lifting lever returns to the raised position. Since the planting part is raised, the main transmission lever and the planting elevating lever are arranged so as to rotate coaxially, and the detent cam of the lock mechanism and the interlocking arm are also coaxial with the planting elevating lever shaft. By providing them above, the main shift lever, the planting elevating lever, the detent cam, and the supporting structure of the interlocking arm are simple, and the strength is such that the space on the shaft member is not required due to the same axial arrangement of these members. High design, yet high operability and a small operating force that can be achieved with a lever operation and lock mechanism structure, and the main transmission lever can be moved to the reverse side integrally with the interlocking arm. Can be moved toward the pivot side of the detent arm in conjunction with the main shift lever, and the detent arm can be pushed against the spring of the interlock arm. The detent can be released, and the planting section can be raised by returning the planting elevating lever to the ascending position. Since the force for securing the position is exerted by pushing up the detent arm against the spring of the interlocking arm, the operation feeling from the planted traveling shift position to the reverse shift position of the main shift lever is good, and The shift lever can be reliably operated without being disengaged from the reverse shift position.

(Example) Hereinafter, an example illustrated in the drawings will be described.

To begin with, referring to the riding rice transplanter shown in FIG. 10, the traveling body (A) has an engine mounted on the front of the body (1), and the front and rear wheels (2) (3) are located below the body. Power is transmitted from the engine to the transmission section (4), and the transmission case (5) drives the rear wheels (3).

A number of gear groups mesh with each other in the transmission section (4), and the operation of the main transmission lever (7) arranged on the side of the seat (6) allows the traveling body (A) to travel on the road, plant, and so on. Reverse running and neutral shift operations are performed.

The planting section towed by the traveling vehicle body (A) is raised and lowered via a link mechanism (8), and is provided with a planting claw driven from a seedling mounting table (9), a transmission case (10), and a float. (1
1) consists of

Therefore, the gear group arranged in the transmission section (4) will be described.

In FIG. 5, the shaft (13) is driven from the engine via the main clutch (12), and the gears (14) (1) of the shaft (13) are driven.
Gears (16) and (17) always meshing with 5) are
And a one-way clutch gear (21) having left and right claws (19) and (20) meshing with the claws of these gears (16) and (17).

The gear (21) of the one-way clutch is moved left and right by a shifter described later.

Gears (22) and (23) are fixed to the shaft (18).
Two-stage gears (24) and (25) constantly meshing with the gears (22) and (23) are mounted on a shaft (26).

The shaft (26) also has a one-way clutch (27), and any one of its claws (28) and (29) engages with one of the gears (24) and (25) to drive the shaft (26). .

Of the above gears, gears (14) (15) and (22) (2
3) is a high-speed, low-speed gear.

As described above, the gears (14), (15), and (16) that always mesh
The combination of (17) and (22) (23) (24) (25) and the gears (21) (27) having a one-way clutch allows the shifter to be moved By sliding, no-clutch speed change of 2 × 2 = 4 steps is possible.

Note that (C) is a gear group that is shifted by the main shift lever (7), and is a gear group for reverse, planting, and running on the road from the left in the figure, and (31) is a front and rear wheel drive shaft, (30) is a planting section drive shaft. (C ') indicates a sliding gear.

Next, a shifter operating device in the above-described transmission will be described with reference to FIG.

That is, the arms (32) and (33) can swing about the shaft (34), and the rollers (35) and (36) supported at the center of the arms (32) and (33) support the cams (37) and (38). Roll on the surface.

The cams (37) and (38) can rotate integrally with the planting elevating lever (7A), and the other ends of the arms (32) and (33) have springs (39) and (40) for moving the shifters. I have.

Rods (41) and (42) for the springs (39) and (40)
But rods (41) and (42) are bell cranks (43) and (44)
Attached to one side and the other to the spring (45) (46)
Is attached. Shaft (47) of bell crank (43) (44)
(48) includes shifters (49) and (50) shown in FIG.

The planting elevating lever (7A) can move back and forth around the shaft (51) as shown in FIG. 4, but the cams (37) and (38)
The roller (35) (3) that moves together with the planting elevating lever (7A) and rolls on the cam
At 6) the arms (32) and (33) move respectively, which causes the shifters (49) (50) via the springs (39) (40) and the rods (41) (42) and the bell cranks (43) (44).
To move.

The shaft (51) of the planting elevating lever (7A) is loosely fitted to the hollow pipe (103) shown in FIG. 4, and a mounting piece (104) is provided near the base of the lever, and this 1 Install the air damper (100) shown in FIG.

The air damper (100) presses the planting elevating lever (7A) with the force of F in the direction of the arrow.

As a mechanism for regulating each position of the planting elevating lever (7A), that is, ascending, neutral, descending, 1st, 2nd, 3rd, and 4th, there are two systems of detent lock mechanisms. As shown in FIG. 7, there is a main detent arm (55) having a main detent cam (52), and the roller (54) of the arm (55) is engaged with the recess (53) of the cam (52). The position change of the neutral position, the descent position, the descent position, and the first speed position is regulated.

Then, the ascending position, the position change of the first speed, the second speed, the second speed, the third speed,
The speed and fourth speed positions are not locked.

As shown in FIG. 1, there is another sub-detent cam (56), and there is a sub-arm (60) that swings around a shaft (59) having a roller (58) engaged with the recess (57) as a fulcrum. .

In this detent, a spring (64) acts on the arm (60) to secure the first, second, third, and fourth positions.

Then, the swing arm (60) also rotates clockwise from the main clutch pedal (72) via the arm (62) and the rod (63) against the force of the spring (64) in the figure, The locked position can be released.

The relative relationship between the two main detent cams (52) and (56) is shown in FIG. 4. In any case, the main detent cam (56) is provided with dampers ( Ten
0) is locked against the force F, and the secondary detent cam (5
In 2), the neutral and descending positions and the change of position from descending to first gear are locked.

When the lock (in the direction (X) in FIG. 1) is released by depressing the main clutch pedal (72), the planting elevating lever (7A) is turned counterclockwise by the force F of the air damper (100) in the direction of the arrow. When the vehicle turns to return to the low speed direction and returns to the first speed position, the position is locked by the detent (52).

Therefore, when the vehicle is stopped by depressing the main clutch pedal and the vehicle is started again, the vehicle can always start from the lowest speed, so that there is no shock and safety is ensured.

When the main shift lever (7) is tilted backward as shown in FIG. 7, the main shift lever (7), the hollow pipe (103) and the back interlocking arm (67) are integrated. 67) interlocks with the main shift lever (7) and moves toward the pivot side (70) of the main detent arm (55), and its roller (68) is opposed to the spring (71) by the main detent arm. Detent is released because (55) is pushed up.

Then, the planting elevating lever (7A) is returned to the ascending position by the force F in the direction of the arrow of the damper, and the hydraulic valve (102) is moved in the ascending direction by the first push lever (101) shown in FIG. It pushes and raises a planting part.

Here, the second pusher (105) is free with respect to the shaft (51) and interlocks with the movement of the float sensor, and the first pusher (101) is integrated with the shaft (51) and interlocks with the lifting lever (7A).

At the back stop position, the force of the spring (71) acts in the axial direction of the back interlocking arm (67), so that the load in the pull-out direction does not act on the back interlocking arm (67).

In any case, the back interlocking arm (67) interlocks with the main shift lever (7), but does not move with the cams (37), (38) and does not interlock with the detent cams (52, 56).

Then, raising, neutral, descending,
Each position of 1st, 2nd, 3rd, and 4th speed is a detent cam (5
2) Secured in (56).

As described above, in the present invention, the main shift lever and the planting elevating lever are disposed so as to rotate coaxially, and the planting elevating lever is always urged in the ascending position direction by the urging member. A locking mechanism consisting of a main detent cam and a main detent arm for regulating the neutralized and lowered positions and the lowered position and the first speed position of the planting portion of the planting elevating lever is constructed by a main shifting lever and a planting elevating / lowering device. A locking mechanism provided on the same axis between the lever and the locking mechanism, the locking mechanism including a back interlocking arm for pushing up a main detent arm for releasing the locking mechanism in conjunction with the main shifting lever being moved to the back position. A main detent cam of the mechanism and a back interlocking arm are provided coaxially with the planting elevating lever shaft, and the back interlocking arm is configured to be orthogonal to the main detent arm. The main detent arm is provided with a spring on which a force acting in the axial direction acts on the interlocking arm so that a load in the pull-out direction does not act on the interlocking arm at the back shift position of the lever, and the back interlocking arm and the main shift lever are integrally formed. In addition, the back interlock arm is configured to be movable toward the pivot side of the main detent arm, and the main interlock lever integrated with the back detent arm is moved to the reverse shift position to move the back interlock arm to the main shift. The planting elevating lever is biased by moving toward the pivot side of the main detent arm in conjunction with the lever, and releasing the detent by pushing up the main detent arm against the spring with the roller of the back interlocking arm. The planting section will be returned to the ascending position, and the planting section will be raised by returning the planting elevating lever to the ascending position. With this configuration, according to the present invention, the detent is released when the main shift is shifted to the reverse, but the load in the disengagement direction is not applied to the main shift lever at the main shift back position, so the planting is performed. The operation feeling from the speed to the reverse was good, and the main shift lever was able to operate reliably without falling out of the reverse speed.

Incidentally, in a riding rice transplanter having a main shift lever on the left of the operator and an up-and-down sub-shift shift lever (mono lever) on the right, the up-and-down sub-shift shift lever has a hydraulic up / down function, a planting clutch and a sub-shift function. At the same time, in addition to the configuration in which the shift lever is returned to the "up" position regardless of the position of the shift lever by the switching operation from the implantation of the main shift lever to the reverse, in addition to the main clutch pedal being turned on, If the shift lever is returned to the "up" position regardless of the position of the shift lever by switching to the disengaged state, even if the main clutch pedal is switched off, the shift lever can be operated without being operated. Since the oil pressure can be automatically set to the "up" position, not only the handleability is improved but also the planted portion is not damaged.

FIG. 8 shows the main transmission lever guide groove (117) as described above.
And an example of a planting elevating auxiliary transmission shift lever guide groove (118). 6 and 7 show the relationship between the auxiliary transmission cam and the detent, and the relationship between the back interlocking arm and the planting elevating arm.

FIG. 8 shows the main transmission lever guide groove (117) as described above.
And an example of a planting elevating auxiliary transmission shift lever guide groove (118). 6 and 7 show the relationship between the auxiliary transmission cam and the detent, and the relationship between the back interlocking arm and the planting elevating arm.

FIG. 9 shows a hydraulic cylinder in the raising and lowering mechanism of the planting portion. In a structure in which the planting portion is lifted by the operation of the hydraulic cylinder (119) in the contracting direction of the piston, the cylinder body is attached to the cylinder body. A rod receiver (110) is provided, and a rod receiver (115) is provided at the tip of the piston. The arm (113) coming out of the link (116) moved by the piston rod before or near the stroke end of the piston is used for automatic return. Push the auto return rod (114) through the rod pin (112),
When the pressure is raised to return to the neutral pressure, the height of the planting portion can be easily changed by switching the position of the pin (112) of the auto return rod, and the planting portion height suitable for the field can be obtained. , Work efficiency can be improved.

The pin (a) in the figure is a pin that is linked to the lifting lever and can swing in the slot (83) of the bracket (82), and the inner wire (107) that is directly connected to the bracket (82) and the outer that is directly connected to the frame. The lever (7A) is extended from the groove (83) of the bracket (82) via the pin (a) by the expansion and contraction between the wires (106).
To return to neutral.

(108) is a bracket (10) that moves integrally with the rod (114).
9) Outer fitting mounted on. (111) is an inner wire receiving fitting attached to the rod receiver (110).

In addition, (93) in FIG. 2 is a foot accelerator, (94) is a stock lever, (95) is a differential lock lever, and (96) in FIG.
Is a planting clutch, and (97) in FIG. 2 is a sub-stock lever.

In addition, the bell crank (7
3) is pivoted on the shaft (74) and the bell crank (73)
The slit hole (79) at the other end of the arm (76) pivotally supported (75) at one end thereof is engaged with the pin (78) of the main clutch arm (77).

 (81) is a fulcrum shaft of the main clutch arm (77).

The wire (80) connected to the lower end of the main clutch arm (77) is connected to the seedling joining clutch.

The shaft (74) of the clutch pedal (72) is also a brake shaft, and the brake rods (87) and (88) are arranged on the left and right as shown in FIG.

In FIG. 3, the brake return springs (84) and (89) are provided with spring hooks (91) on auxiliary steps that protrude outside the center frame because the brake rods (87) and (88) pass outside the center frame. ing. (98)
Indicates a brake pedal.

In any case, the present invention relates to an interlocking mechanism of a raising and lowering device of a planting section of a riding rice transplanter, which raises a planting section in response to the operation of the main shifting lever when the main shifting lever is moved to a reverse shift position. And the planting elevating lever are arranged so as to rotate coaxially, and the planting elevating lever is always urged in the ascending position direction by the urging member. A lock mechanism comprising a main detent cam and a main detent arm for regulating the neutral position, the lowering position, the lowering position, and the first speed position of the section is provided on the same axis between the main shift lever and the planting elevating lever. ,
The lock mechanism is provided with a back interlock arm for pushing up a main detent arm that releases the lock mechanism in conjunction with the main shift lever being put into the back position, and the main detent cam and the back interlock arm of the lock mechanism are connected to each other. The back interlocking arm is provided coaxially with the planting elevating lever shaft, and the back interlocking arm is configured to be orthogonal to the main detent arm, so that a load in the pull-out direction does not act on the interlocking arm at the back shift position of the main shift lever. The main detent arm is provided with a spring on which a force acting in the axial direction acts on the main detent arm, and the back interlock arm and the main speed change lever are integrally formed, and the back interlock arm is movable toward the pivot side of the main detent arm. By moving the main transmission lever integrated with the back interlocking arm to the The arm is in conjunction with the main gear shift lever,
When the main detent arm moves toward the pivot side of the main detent arm and the detent is released by pushing up the main detent arm against the spring by the roller of the back interlocking arm, the planting elevating lever is returned to the raised position by urging. That is, the planting portion is configured to be raised by returning the planting raising / lowering lever to the raised position.

[Brief description of the drawings]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a diagram showing the relationship between the pedals and each lever of the tractor viewed from the front, Fig. 3 is a plan view of the same, Fig. 4 is a rear view of the same, and Fig. 5 is a transmission. Fig. 6 (a) and (b) are explanatory views showing the relationship between the planting elevating lever and the auxiliary transmission cam, and Figs. 7 (a) and (b) are explanatory views showing the relationship with the back interlocking arm. FIG. 8 is a plan view showing a guide plate of a main speed change lever and a planting elevating lever, FIG. 9 is an explanatory view of a hydraulic cylinder, and FIG. (32) (33) Arm (35) (36) Roller (37) (38) Cam (39) (40) Spring (41) (42) Rod (43) (44) ) Bell crank (45) (46) Spring (49) (50) Shifter (52) Detent cam (53) Dent (54) Roller (55) Detent arm ( 56) Detent cam (57) Dent (58) Roller (60) Arm (64) Spring (67) Back link arm (68) Roller (72) Main Clutch pedal

Claims (1)

(57) [Scope of request for utility model registration] When the main shift lever is moved to the reverse shift position, the interlocking mechanism of the raising and lowering device of the planting portion of the riding rice transplanter raises the planting portion in conjunction with the operation thereof. The lever is arranged so as to rotate coaxially, and the planting elevating lever is always urged in the ascending position direction by the urging member, so that the planting portion of the planting elevating lever is neutralized and lowered. A lock mechanism including a main detent cam (52) and a main detent arm (55) for restricting the respective positions, the lowering position, and the first speed position is provided on the same axis between the main speed change lever and the planting elevating lever. The lock mechanism is provided with a back interlock arm (67) for pushing up a main detent arm for releasing the lock mechanism in conjunction with shifting the main shift lever to the back position, and a main detent cam of the lock mechanism. A back interlocking arm is provided coaxially with the planting elevating lever axis, and the back interlocking arm is configured to be orthogonal to the main detent arm. The main detent arm is provided with a spring on which a force acting in the axial direction acts so that a load does not act. The back interlock arm is interlocked with the main shift lever by moving to the reverse side where the main shift lever integrated with the back interlock arm is moved to the reverse shift position.
By moving toward the pivot side (70) of the main detent arm (55), the detent is released by pushing up the main detent arm against the spring by the roller (68) of the back interlock arm, and the planting elevating lever is released. The main transmission of the riding rice transplanter and the planting portion are characterized in that the planting portion is returned to the rising position by the bias, and the planting portion is raised by returning the planting elevating lever to the rising position. Interlocking device.