JP2685701B2 - Walkable paddy work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walk-behind paddy working machine, and is used as a walk-behind rice transplanter, flooded direct seeder, 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. A walk type rice transplanter having an automatic operation device for a planting clutch 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, although the three arms of the automatic operation device are provided in a machine frame that is erected as a rearward upward slope behind the seedling placing table (work table), the machine frame has a so-called box shape. Therefore, it is very troublesome to adjust the wire or the like connected to the arm, and it is difficult to supply oil to the sliding portion or the adjusting portion, and the wire hanging is troublesome.

Therefore, according to the present invention, the interlocking means for disengaging the work clutch in conjunction with the disengagement operation of the steering clutch lever is provided in the machine frame behind the work table (seedling table) which is inclined upward in the rearward direction. Even if it is attached to, wire hanging, adjustment,
The purpose is to prevent fuel supply problems.

[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 working clutch lever 16 can be operated independently and the left and right steering clutch levers 18L and 18R steering clutch 17
In order to achieve the above-mentioned object, the walking type paddy working machine 1 provided with the interlocking means K for disengaging the work clutch 15 when operated in the disengagement direction of L and 17R is provided with the following technical means. .

That is, according to the present invention, the machine frame H of the control section 14 is provided along the slope behind the work platform 12 provided on the rear portion of the traveling machine body 2 as a rearward upward slope, and the machine frame H In the machine frame H on the upper side and near the workbench 12 side, there is a space H1 and the 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. Turn off the work clutch 15 through.

Further, the working clutch 15 can immediately shift to the working state after turning or the like by operating the clutch lever 16 independently. In the above, the machine frame H provided behind the work table 12 having an upward slope and along the slope thereof.
Since the interlocking plate 24 and the like of the interlocking means K are provided in the upper part of the inside, it is prevented that mud or the like adheres during the work.

Furthermore, since the interlocking plate 24 and the like are provided in the frame with the space H1 present, the wires 25L, 25R, 30 and the like can be easily replaced and refueled, and the maintenance of the adjusting portion 42 can be simplified.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment 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 is formed by connecting a mission case 8 to an engine pedestal 7, a gasoline engine 9 is mounted on the engine pedestal 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 of the traveling vehicle body 2. The steering section 14 has a working clutch lever 16 for operating a work 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 on the support shaft 23, that is, on the rear inclined surface is attached to the middle of the rod in the rod longitudinal direction. A pair of left and right steering clutch levers 18L and 18R are provided on the left and right grips of the handle rod 20 so that they can be grasped.
The steering clutches 17L and 17R for the left and right wheels are first interlocking means 25L and 25R, which are exemplified by Bowden wires, and are interlocked so that the clutches are turned 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 interlocked by a third linking 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 biased in the engaging direction (lock direction) against the locked pin 40 fixed to the lock arm 38, and the lock arm 38 is formed with a hook-shaped lock cam portion 38A. , 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 supporting rod 19 and is interlocked with the interlocking member 24 which is swingably supported on an inclined plane of a 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, is provided at the joint member. In addition, the interlocking member 24 and the joint members 35L, 35R are provided with the escape portions 36L, 36R and the left and right steering clutch levers 18L, 18R for independently operating the work clutch lever 16. When the steering clutches 17L and 17R are operated in the disengagement direction, the engagement portion 24L that disengages the work clutch 15 is operated.
24R and a connecting means J, which is provided above the machine frame H having a frame structure with the supporting rod 19 and the like and in the frame near the side of the work table 12 through the space H1. Cooperation means
The adjustment operation of the screw adjusting portions 42 of 25R, 25L, 30, 31, 34, refueling, etc. are facilitated through the space H1, and the chances of adhesion of mud and the like are reduced.

Therefore, according to the first embodiment, when turning in a headland or the like, the manipulating portion 14 is lifted and either 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 around the support shaft 23 as a fulcrum through the engagement of either one of the engagement pins 24A and 24B in association with the operation of cutting 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 maintained as shown in FIG. 2 by engaging the lock pin 40 with the lock cam portion 38A by the biasing force 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 designated 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.

Incidentally, the cam portion 28A of the lock arm 28 is formed in an arc shape centering on its pivotal fulcrum to reduce engagement and disengagement resistance. Further, since the connecting point of the linking means 25L is farther from the connecting point of the linking means 30 with respect to the support shaft 23 of the interlocking plate 24, the release resistance can be reduced while sufficiently securing the supporting force at the time of locking. .

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 engaging pins 24A, 24B for engaging with the escape portions. 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.

[0025]

As described above, according to the present invention, when the steering clutch lever disengages the clutch for turning on the headland side, the working clutch is disengaged automatically. It is not necessary to operate multiple levers when turning, which makes turning smooth and agile, and because there are fewer connections, the operator does not have to take the steering wheel and the headland area can be reduced. .

In addition, since the work clutch lever can be operated independently, the working accuracy, for example, the basic working effect that there is no hindrance to the transition to the working state after turning, and the following unique working effects are provided. Play. Since the interlocking means is mounted near the workbench on the upper part of the machine frame provided behind the workbench along this, mud and the like are not attached and light operation is possible.

Further, since the interlocking means is provided in the space inside the machine frame, it is possible to easily and surely change the wires, adjust and inspect.

[Brief description of the 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 15 Work clutch 16 Work clutch lever 17L Steering clutch 17R Steering clutch 18L Steering clutch lever 18R Steering clutch lever 24 Interlocking plate K Interlocking means H Machine frame H1 space

Claims (1)

(57) [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), the work clutch lever (16) can be operated independently, and the left and right steering clutch levers (18L) and (18R) are respectively operated by the steering clutch (17L). ) (17R)
In the walk-type paddy work machine (1) equipped with the interlocking means (K) for disengaging the work clutch (15) when operated in the disengagement direction, the rear of the traveling machine body (2) is equipped with a rearward upward slope. Behind the existing workbench (12), along the slope, the machine frame of the control part (14)
(H) is provided, and the space (H1) is present in the machine frame (H) on the upper side of the machine frame (H) and near the workbench (12) side, and the interlocking means (K) is provided.
A walk-type paddy working machine characterized by being equipped with.