JPH06153631A - Automatic operation apparatus for work clutch of walking-type paddy field working machine - Google Patents

Abstract

PURPOSE:To enable easy and light gyration of a paddy field working machine at a butt and to decrease the area of butt. CONSTITUTION:The automatic operation apparatus for the work clutch of a walking-type paddy field working machine has an operating part 14 provided with a working clutch lever 16 to operate a working clutch 15 and right and left steering clutch levers 18R, 18L to operate the steering clutches 17R, 17L of the right and left wheels 4R, 4L. When the right and left steering clutch levers 18R, 18L are operated to the state to disconnect the steering clutches 17R, 17L, the working clutch 15 is interlocked to be disconnected to enable the independent operation of the working clutch lever 16. The apparatus is provided with an interlocking means K to disconnect the working clutch 15 and reduce the speed of an engine 9 or a speed changer of the driving system when the right and left steering clutch levers 18R, 18L are operated in the direction to disconnect the steering clutches 17R, 17L.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic operating device for a work clutch in a walk type paddy working machine, and is used for a walk type rice transplanter, a direct flooding machine, and the like.

[0002]

2. Description of the Related Art At the time of turning in a field work, the planting clutch (working clutch) can be clutched off at once by simply turning off the side clutch lever (steering clutch lever) to simplify the steering operation. An automatic operating device for a planting clutch in a walk type rice transplanter for easily reducing the area on the headland side is disclosed in, for example, Japanese Utility Model Publication No. 2-2175.

[0003]

The prior art disclosed in the above publication has some usefulness, but has the following problems to be solved. That is, when turning in a headland,
First, even if the planting clutch (working clutch) is disengaged and the planting section (working section) is stopped, if the traveling speed of the work machine remains at the working speed, smooth and accurate turning will be hindered. There was a fear.

Therefore, at the time of turning, it is necessary to operate the engine throttle lever, the gear shift lever, etc. to temporarily reduce the traveling speed, and it is difficult to carry out this operation while steering the steering wheel. Sometimes it became difficult to turn on the side and the headland area eventually became large. Therefore, the present invention not only disengages the work clutch when the left and right steering clutch levers are turned off, but also lowers the engine speed or decelerates the traveling system speed changer so that turning in a headland or the like is made smoother. The purpose is to ensure and reduce the headland area.

[0005]

SUMMARY OF THE INVENTION The present invention is a work clutch.
Work clutch lever 16 for operating 15 and both left and right wheels 4L, 4
The steering section 14 is provided with the left and right steering clutch levers 18L and 18R for operating the R steering clutches 17L and 17R respectively, and the left and right steering clutch levers 18L and 18R are provided respectively.
When operating in the disengagement direction of L and 17R, the work clutch 15 is interlocked with the disengagement operation, and the above-mentioned object is achieved in the work clutch automatic operation device in the walk-type paddy work machine in which the work clutch lever 16 can be operated independently. In order to do so, the following technical measures are taken.

That is, according to the present invention, when the left and right steering clutch levers 18L and 18R are operated in the disengaging direction of the steering clutches 17L and 17R, respectively, the working clutch 15 is disengaged and the engine 9 or the traveling system transmission is decelerated. It is characterized in that an interlocking means K is provided.

[0007]

According to the present invention, the walk type paddy working machine shown in FIG.
When carrying out paddy work while gripping the control unit 14 of 1 and turning in a headland, etc., lift the control unit 14 and operate the steering clutch levers 18L, 18R on the side attempting to turn. The interlocking plate 24, which is the interlocking means, swings around the support shaft 23 through the wires that are the first interlocking means 25L and 25R shown in FIGS. The working clutch 15 is turned off via the fourth coupling means 34, which is a wire for the engine or the traveling system transmission.
The engine 9 speed is reduced or the transmission 33
Slow down.

[0008] Therefore, when the operator turns in a headland,
Only by operating one of the steering clutch levers 18L and 18R, the work clutch 15 can be turned off, and turning can be performed while the traveling speed is reduced. Further, the work clutch 15 can immediately shift to the working state after turning or the like by operating the clutch lever 16 independently.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In addition, although a walk type rice transplanter is illustrated as an example in the drawing, the present invention is also applicable to a walk type flooding direct seeder, a fertilizer applicator, and the like. Paddy work machine shown as a walk-behind rice transplanter in FIG.
1 is equipped with drive wheels 4R, 4L that roll on the cultivator G via side transmission cases 3R, 3L on the left and right sides of the traveling machine body 2 so as to be able to move up and down, and between the wheels 4R, 4L on the field G1. Gliding float 5
Is installed.

The traveling machine body 2 comprises an engine mount 7 and a mission case 8 connected in series, a gasoline engine 9 is mounted on the engine mount 7, and the engine output is in the mission case 8 by a winding transmission body (not shown). It is interlockingly connected to the transmission system of the traveling system and the work system. Mission case
The traveling system transmission in 8 has a steering clutch for the wheels, and the working system transmission has a working clutch, and a planting pawl is provided via a transmission shaft inserted in the central transmission case 10. 11, is connected to a working unit 13 including a seedling placing table 12 and the like.

A steering section 14 is provided at the rear part of the traveling vehicle body 2. The steering section 14 has a working clutch lever 16 for operating a working clutch 15 and steering clutches 17L, 17R for operating left and right wheels. The control section 14 is provided with levers 18L, 18R, etc., and the control section 14 is a pair of left and right supporting rods 19 rising up from the rear of the machine body in a rearward upward inclination shape and a U-shaped handle in a plan view fixed to the rising ends of the supporting rods 19. Mainly composed of rod 20 and a pair of left and right supporting rods 19
The seedling placing table 12 and the seedling placing table 12 are arranged in a front-rear substantially parallel relationship in a side view.

In the first embodiment shown in FIGS. 1 to 3, a connecting stay 21 is installed in the middle of the pair of left and right supporting rods 19 in the longitudinal direction of the rod, and an operating support shaft 22 and a handle rod 20 are also installed. Therefore, the control unit 14 has a substantially frame structure, and
An interlocking plate 24 that is swingable around a support shaft 23 is attached to the middle of the rod 19 in the longitudinal direction of the rod. A pair of left and right steering clutch levers 18L, 18R are provided on the left and right grips of the handle rod 20 so that they can be grasped. The levers 18L, 18R and the steering clutches 17L, 17R for the left and right wheels are the first linkage exemplified by the Bowden wire. Means 2
The 5L and 25R are interlocked so that the clutch will turn off when the lever is grasped.

A control box 26 having a guide groove is attached to the central portion of the control section 14 in the left-right direction.
A work clutch lever 16 for turning on / off the work clutch 15, which is shown as a planted clutch, a main clutch lever 28 for turning on / off the main clutch 27, a fixing release lever 29, and the like are arranged in parallel. The work clutch lever 16 and the work clutch 15 are interlockingly connected by the second cooperation means 30 shown by Bowden wire,
The clutch 15 is turned on and off by operating the lever 16.

The main clutch 27 and the clutch lever 28 are interlockingly connected by a third cooperation means 31 shown by Bowden wire, and the release lever 32 and the engine throttle 33 provided on the handle grip portion are shown by Bowden wire. 4 The interlocking means 34 is interlockingly connected so that the engine speed can be increased or decreased. Joint members 35L, 35R are provided in the middle of the first cooperation means 25L, 25R, and escape holes 36L, 36R are formed in the joint members 35L, 35R in the wire longitudinal direction, and at the tip of the interlocking plate 24. Engaging pins 24A and 24B arranged vertically and projecting from the interlocking plate 24 engage with the escape holes 36L36R with play.

The middle of the second cooperation means 30 in the longitudinal direction is connected to the middle of the interlocking plate 24 via a pin 30A, and the middle of the fourth cooperation means 34 in the longitudinal direction is a pin 34A at the rear end of the interlocking plate 24. Are connected via. In the vicinity of the support shaft 23, which is the swinging fulcrum of the interlocking plate 24, one support rod 19 is provided with a lock arm 38 that is swingable about a support shaft 37. The lock arm 38 is a coil spring. Interlocking plate 24 by the spring means 39 shown
The lock arm 38 is urged in the engaging direction (lock direction) against the locked pin 40 that is fixed to the lock arm 38, and a hook-shaped lock cam portion 38A is formed on the lock arm 38. , Is connected to the lock release lever 29 via a connecting means 41 made of wire or the like.

Here, the interlocking means K is disposed so as to intersect with the longitudinal direction of the rod of the support rod 19 and is interlocked with the interlocking member 24 which is swingably supported on the inclined plane of the rearward upward inclination. Coupling means that includes a joint member 35L, 35R that intersects with the member 24 and is arranged along the rod longitudinal direction of the support rod 19, and that connects the work clutch 15 and the work clutch lever 16.
An intermediate portion of 30 is provided to be connected to the interlocking member 24, and an intermediate portion of another cooperation means 25L, 25R connecting the steering clutches 17L, 17R and the steering clutch levers 18L, 18R, respectively, to the joint member. 35L, 35R are connected to each other, and further, the interlocking member 24 and the joint members 35L, 35R are provided with relief portions 36L, 36R and left and right steering clutch levers 18L, 18R that enable the working clutch lever 16 to be independently operated. When the steering clutches 17L and 17R are operated in the disengagement direction, the engagement portion 24L that disengages the work clutch 15
24R and a connecting means J, which is provided via the space H1 in the frame of the machine frame H having a frame structure with the supporting rods 19 and the like, and each linking means 25R, 25L, 30, 31 The adjustment operation of the screw adjusting portions 42 of the screws 34, 34, refueling, etc. are facilitated through the space H1, and the chances of adhesion of mud or the like are reduced.

Therefore, according to the first embodiment, when turning in a headland or the like, the control section 14 is lifted and one of the steering clutch levers 18L and 18R, that is, the side to be turned is operated. Then, one of the steering clutches 17L, 17R is turned off via one of the first linking means 25L, 25R, and the driving of one of the wheels 3L, 3R is stopped, while the other continues to be driven.

The interlocking plate 24, which is interlocking means, is oscillated with the support shaft 23 as a fulcrum through the engagement of either one of the engagement pins 24A and 24B in association with the cutting operation of the lever. The clutch 15 is interlocked in the clutch off direction by the second linking means 30 via the pin 30A to cut off power transmission to the working unit 13, while the throttle 33 of the engine 9 is locked by the fourth linking means 34 via the pin 34A. It is interlocked with the direction to reduce the engine rotation.

Further, this interlocking posture is held as shown in FIG. 2 by the lock cam portion 38A engaging with the locked pin 40 by the bias of the spring means 39. Therefore, the work clutch 15 can be automatically disengaged by disengaging the steering clutch levers 18L and 18R, and the engine speed can be reduced to facilitate turning easily and lightly. After turning, the interlocking plate 24 is allowed to swing freely via the lock release lever 29, and the work clutch lever 16 independently operates the work clutch 15 in the range of the escape holes 36L, 36R of the joint members 35L, 35R. It can be turned on and off.

FIG. 4 and FIG. 5 show a second embodiment of the present invention. Since the basic structure and operation are common, common parts are denoted by common reference numerals, and the differences will be described below. Escape hole 36
The joint members 35L and 35R having L and 36R are arranged side by side on either the upper or lower surface of the interlocking plate 24, and the second interlocking means 30 is arranged on the interlocking plate 24 in the left or right direction. , 30B are connected.

In the second embodiment, the lock arm 38 described in the first embodiment, its release lever 29, etc. can be provided. Further, in the first and second embodiments, instead of the engine throttle and the release lever,
It may be replaced with a transmission and its shift lever in the traveling mission, and in this case, the transmission is decelerated by disengaging the steering clutch lever.

Further, in the embodiment, the joint members 35L, 35R are provided with escape holes (relief portions) 36L, 36R, and the interlocking plate 24 is provided with the engaging pins 24A, 24B for engaging with the escape portions as the connecting means J. The relief portion may be formed on the interlocking plate and the engagement pin may be formed on the joint member.

[0023]

As described above in detail, according to the present invention, when the steering clutch lever disengages the clutch for turning on the headland side, not only the work clutch is disengaged but also the engine speed or the traveling speed is reduced. Since it automatically operates to decelerate the system transmission, it is not necessary to operate multiple levers when turning, which makes the turning smooth and light, and also reduces the speed. Can reduce the headland area without getting the handle.

Moreover, since the work clutch lever can be operated independently, there is no problem in work accuracy, for example, transition to a work state after turning.

[Brief description of drawings]

FIG. 1 is a developed plan view of a main part showing a first embodiment of the present invention, showing a state before operation.

FIG. 2 is a developed plan view of the essential parts of the first embodiment of the present invention, showing the state after the operation.

FIG. 3 is a sectional view of a main part.

FIG. 4 is a developed plan view of a main part showing a second embodiment of the present invention, showing a state before operation.

FIG. 5 is a developed plan view of the essential parts showing the second embodiment of the present invention, showing the state after the operation.

FIG. 6 is an overall side view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Paddy work machine 4L Drive wheel 4R Drive wheel 9 Engine 14 Control part 15 Work clutch 16 Work clutch lever 17L Steering clutch 17R Steering clutch 18L Steering clutch lever 18R Steering clutch lever 24 Interlocking member K Interlocking means

[Procedure amendment]

[Submission date] January 14, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Added

[Correction content]

[Figure 7]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Added

[Correction content]

[Figure 8]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

Further, in the embodiment, the joint members 35L, 35R are provided with escape holes (relief portions) 36L, 36R, and the interlocking plate 24 is provided with the engaging pins 24A, 24B for engaging with the escape portions as the connecting means J. The relief portion may be formed on the interlocking plate and the engagement pin may be formed on the joint member. FIG. 7 shows a third embodiment, which is a handle grip.
Install another lock release lever 29A at a position where
Connecting part such as a long hole to the lock arm 38 via the wire 41A.
It is connected via 41B. Furthermore, FIG. 8 shows the fourth actual
The example shows the lock release lever 29
It is provided at a position where it can be grasped from the outside. The third and fourth
The embodiment is common with the members and the like common to the first and second embodiments described above.
It is indicated by a symbol. Also, in the first and second embodiments, the pillow
Unlock the lock arm 38 near the ground and re-rotate after turning.
It is possible to lock while grasping the handle
However, this operation becomes easier in the third and fourth embodiments.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a developed plan view of a main part showing a first embodiment of the present invention, showing a state before operation.

FIG. 2 is a developed plan view of the essential parts of the first embodiment of the present invention, showing the state after the operation.

FIG. 3 is a sectional view of a main part.

FIG. 4 is a developed plan view of a main part showing a second embodiment of the present invention, showing a state before operation.

FIG. 5 is a developed plan view of the essential parts showing the second embodiment of the present invention, showing the state after the operation.

FIG. 6 is an overall side view showing an embodiment of the present invention.

FIG. 7 is a developed plan view of a main part showing a third embodiment of the present invention.
Indicates that before operation.

FIG. 8 is a developed plan view of a main portion showing a fourth embodiment of the present invention.
Indicates that before operation.

[Explanation of symbols] 1 Paddy work machine 4L Drive wheel 4R Drive wheel 9 Engine 14 Control part 15 Work clutch 16 Work clutch lever 17L Steering clutch 17R Steering clutch 18R Steering clutch lever 18R Steering clutch lever 24 Interlocking member K Interlocking means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kozo Koike 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Claims] 1. A work clutch lever (16) for operating a work clutch (15) and steering clutches (1) for left and right wheels (4L) (4R).
Left and right steering clutch levers for operating 7L and 17R respectively
(18L) and (18R) are provided in the control section (14), and when the left and right steering clutch levers (18L) and (18R) are operated in the disengagement direction of the steering clutches (17L) and (17R), the work clutch (15) With the automatic operation device of the work clutch in the walk-type paddy work machine, which allows the work clutch lever (16) to be operated independently, the left and right steering clutch levers (18L) and (18R) are operated respectively. When operating in the direction to disengage the direction clutch (17L) (17R), the work clutch
An automatic operation device for a work clutch in a walk-behind paddy work machine, which is provided with interlocking means (K) for turning off (15) and decelerating an engine (9) or a traveling system transmission section.