JPS5845527Y2 - Clutch disconnection wire operating device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mobile agricultural machine, and particularly to a latch/intermittent wire operating device suitable for application to a riding rice transplanter.

The area around the driver's seat of this type of mobile agricultural machinery is densely packed with operating levers for commanding and controlling the complex movements of the agricultural machinery. It is necessary to ensure workability and also consider safety when getting on and off.

In particular, riding rice transplanters are equipped with an operation device for a clutch connection/disconnection wire that constitutes a seedling stand fixed position stop device for aligning and stopping the spare seedling stand and the seedling stand when supplying spare seedlings to the side of the lower part of the driver's seat. However, since the control lever of this device was conventionally operated by rotating in the front and back direction, the lever protruded into the space below the driver's seat, which obstructed getting on and off the rice transplanter, and also caused inadvertent footfall. There was a risk of tripping and falling.

Therefore, the present invention supports an operating lever so that it can move up and down, a pair of operating plates are provided on the operating lever with one end rotatably supported, and the other end of the operating plate is attached horizontally. The distance between the outer wires can be adjusted by pivoting guide pipes that are regulated so that they can only move between the outer wires, fixing one end of the outer wire of the Bowden wire to each guide pipe, and moving the operating lever up and down. It is an object of the present invention to provide a clutch disconnection wire operating device which is constructed so as to be able to connect and disconnect the clutch by changing the amount of the clutch, thereby eliminating the above-mentioned drawbacks.

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings.

The riding rice transplanter 1 has a body 5 supported by front wheels 2 and rear wheels 3, as shown in FIG. A driver's seat 7 is arranged.

The driver's seat T is provided with a steering wheel 9 and a seat 10, and further includes a clutch pedal 11 and an operating device 1 for a clutch connection/disconnection wire constituting an automatic seedling platform foot position stop device.
2nd class is installed.

A spare seedling stand 13 is arranged at the rear of the body 5, and a planting device 15 is supported at the rear of the body 5 so as to be movable up and down by a link 16 and a hydraulic device 17.

The planting device 15 includes multiple rows of planting rods 19, seedling stands 20, and floats 21, and further includes a transmission case 22, as shown in FIG.

An input shaft 23 is provided at the lower part of the transmission case 22, and the power from the engine 6 is transferred to the input shaft 23 from the main clutch 2.
5 and a transmission shaft 26.

Further, as shown in FIG. 3, the rotation input from the input shaft 23 is applied to a sprocket 2 fixed to one end of a traverse cam 2T rotatably supported on the upper part of the transmission case 22.
9 via a chain 30.

A slide block 31 is engaged with the traverse cam 27, and the slide block 31 is press-fitted into a slide par 32 fixed to the seedling stand 20 so as to be located at the center of the seedling stand 20.

Therefore, the slide block 31 is connected to the traverse cam 270.
By rotating, it can move back and forth in the directions of arrows A and B in the figure, and the seedling stand 20 can also move in the same direction.

On the other hand, on the side of the traverse cam 27 of the slide block 31, as shown in FIG. 4, a cam plate 33 having a chevron-shaped cam curve is formed. 36 are configured so that they can be freely transferred and contacted.

The arm 35 is rotatably supported by the transmission case 22, and furthermore, one end of the arm 35 protrudes outside the case 22 and has a lever 37 fixed thereto.

An inner wire 39a of a Bowden wire 39 is pivotally attached to the tip of the lever 37.
As shown in FIG.
Clutch lever 40 installed at the front of the aircraft via the lower part
is connected to.

The clutch lever 40 is rotatably supported by a pin 41, and by pulling the wire 39a in the C direction, the lever 40 pushes one end of the clutch 25 in the D direction against the spring 42 built into the clutch 25. Clutch 25 can be disconnected.

Further, as shown in FIG.
It has a guide plate 43 formed in a letter shape, and the guide plate 43 is provided with a U-shaped guide groove 43a in the vertical direction.

Further, a guide groove 45 is fixedly provided in the central portion of the guide plate 43 in the horizontal direction, and a guide plate 46 is further provided in the guide plate 43 in parallel with the guide bar 45 .

The guide plate 46 has guide grooves 46a, 46a at both ends.
The guide grooves 46a and 46' are formed parallel to the axis of the guide rod 45.

A guide rod 47 is provided perpendicularly to the bottom surface of the guide plate 43 near the guide plate 46 of the guide plate 43, and a pipe 50 fixed to an operating lever 49 is slidably attached to the guide rod 47. They are mated.

A Kid stopper 51 is fixed to the operation lever 49, and the tip of the stopper 51 is slidably engaged with the guide groove 43a of the guide plate 43.

Further, a shaft 52 is provided at the bottom of the pipe 50,
Two operating plates 53, 53' are supported on the shaft 52 so as to be rotatable only.

A guide pipe 55, 55 is provided at the tip of the actuating plate 53, 53'.
The stoppers 56, 56' provided with 1' are rotatably fitted, and the tips of the stoppers 56, 56' are slidably engaged with the guide grooves 46a, 46a' of the guide plate 46.

The guide pipes 55, 55' are fitted to the guide shaft 5 so as to be slidable in the axial direction, and both guide pipes 55, 55'
A spring 59 is stretched between the guide pipe 55
, 55' are always urged inward.

Additionally, wire stoppers 60, 60' are provided at the lower ends of the guide pipes 55 and 55', and one wire stopper 60 is attached to one end of the outer wire 39b on the side of the planting device 15, as shown in FIG. The other end of the wire 39b is fixed near the lever 37 of the planting device 15.

The other wire stopper mark' is fixed to one end of an outer wire 39b' on the clutch side, and the other end of the outer wire 39b' is connected to a terminal near the clutch lever 40.
It extends there, and is fixed there to a bracket 61 that constitutes the fuselage 5.

A clutch pedal 11 is connected to the clutch lever 40 via a clutch arm 62 and a rod 63, and the clutch 25 can also be operated independently by the foot.

Since the present invention has the above configuration, the riding rice transplanter 1
When carrying out rice planting work using the , as shown in FIG.
The inner wire 39a of the Bowden wire 39 is slackened by bringing the guide pipes 55° and 55' closer together to bring the outer wires 39b and 39b' closer together, thereby reducing the outer wire as a whole. Rice planting work is carried out in this condition.

Power from the engine 6 is input to the transmission case 22 via the clutch 25, transmission shaft 26, etc., and further rotates the traverse cam 27 via the chain 30 and sprocket 29, as shown in FIG.

Due to the cam action of the traverse cam 27, the slide block 31 engaged with the cam 27 and thus the block 3
Slide par 32 and seedling stand 20 fixed to 1
The rice transplanting operation is started by repeatedly moving in the directions of arrows A and B in the figure.

At this time, due to the left and right movement of the slide block 31, the driven roller 36 also moves towards the block 31 as shown in FIG.
Near the center of the transfer stroke, the inner wire 39a of the Bowden wire 39 slides into contact with the cam plate 33 and rotates to be lifted upward, and as the inner wire 39a of the Bowden wire 39 moves in the H direction in FIG. 3 via the arm 35 and lever 37. It is pulled in at a certain point.

However, as already mentioned, the inner wire 39a is in a slack state due to the operation of the operating lever 49, so even if the lever 37 pulls in the wire 39a, the amount of pull alone is sufficient to eliminate the slack in the wire 39a. The clutch 25 is not disconnected, and the clutch 25 continues to transmit power without being disconnected.

Next, when the number of seedlings on the seedling stand 20 becomes small,
When attempting to supply the spare seedlings above 3, the operating lever 49 is pushed down from the stop release position E, as shown in FIGS. 5 and 6.

At this time, the pipe 50 fixed to the operating lever 49 is pushed downward while slidingly contacting the guide rod 47, and at the same time, the stopper 51 also moves downward along the guide groove 43a.

As the pipe 50 moves downward, the working plates 53, 53'
The shaft 52, which is the pivot point between the pipe 50 and the pipe 50, also moves downward, but the work plates 53, 53' have the guide pipe 55, 55' slidably fitted on the guide rod 45 at the other end, the stopper 56,
56', the guide pipe 55.
55' is moved out of the device 12 against the spring 59.

As the guide pipes 55, 55' move outward, the stoppers 56, 56' move along the guide grooves 46a, 46a' of the guide plate 46, and are connected and locked to the wire stoppers 60, 60'. The ends of the outer wires 39b39b' of the Bowden wire 39 also move outward.

Therefore, the inner wire 39a, which had been slack until recently, gradually loses its slack and finally becomes under tension.

Furthermore, while pushing down the operating lever 49, the shaft 5
2 reaches below the line connecting the articulation centers of the stoppers 56, 56' and the actuating plates 53, 53' on which the elastic force of the spring 590 is acting, resulting in a so-called state beyond the fulcrum.

At this point, the tip of the stopper 51 of the operating lever 49 comes into contact with the bottom of the guide groove 43a, preventing further downward movement of the lever 49, but the operating plates 53, 53' move beyond the supporting point. As shown by the chain line in Fig. 6, the spring 590 is moving in an inverted ``-'' shape, so the elastic force of the spring 590 biases the operating lever 49 downward via the actuating plate 53, 53', etc. The lever 49 is locked and fixed under the IT stop position where the inner wire 39a is held in a tensioned state.

In this state, the driven roller 36 in the transmission case 22 is in sliding contact with the cam plate 33 of the slide block 31, and as shown in FIG. Position X-X where the seedling stand 13 can be aligned
When the inner wire 39a reaches the uppermost position in the figure, the inner wire 39a is lifted up as far as the third
Pull in the H direction shown in the figure.

At this time, since the inner wire 39a is under tension, one inch of the movement of the wire 39a is transmitted to the flange lever 40 at the front of the fuselage 5 shown in FIG. 2, and the lever 40 is rotated in the direction of arrow C in the figure. The moving clutch 25 is pushed in the D direction against the spring 42, and the main clutch 25 is disengaged.

Then, the operation of the rice transplanter 1 is stopped, and the seedling stand 20 is also stopped very close to the center position, and the seedling stand 20 and the preliminary seedling stand 13 are aligned.

In this state, the operator raises the planting device 15, supplies preliminary seedlings from the preliminary seedling stand 13 onto the seedling stand 20, and then lowers the planting device 15 to continue the planting work.

When restarting the planting work, the operating lever 49 is pushed up from the stop position F to the stop release position E as shown in FIG.

At this time, as the operating lever 49 rises, the guide pipes 55, 55' slide toward each other on the guide rod 45 by the action of the actuating plates 53, 53' in the same way as when the lever 49 is pushed down. , the stopper 56°56' also has the guide groove 46.
a, 46a' to the inside of the device 12.

Therefore, the spacing between both guide pipes 55 and 55' is narrower than 1
The inner wire 39a of the Bowden wire 39 gradually becomes slack.

Further, the operating lever 49 is raised and the shaft 52 is moved to the operating plate 53.
．． 53' and the stopper 56 degrees 56', the fulcrum is crossed again, and the elastic force of the spring 590 is applied to the operating lever 4 in the opposite direction from the stop position F.
9 upward, and the lever 49 is automatically lifted upward along the guide rod 47.

When the lever 49 reaches the stop release position E, the stopper 5
6, 56' are guide grooves 46a of the guide plate 46,
46a', the operating lever 49 is therefore prevented from moving above the stop release position E, and is locked and fixed at the stop release position E by the spring 59.

When the lever 49 reaches the stop release position E, the inner wire 39a of the Bowden wire 39 becomes slack again, and the main clutch 25 is also pushed back by the spring 42 in the direction C in FIG.
5 is connected, and the rice transplanter 1 is able to start work.

In addition, although the above-mentioned embodiment explained the case where the operating device 12 is applied to the riding rice transplanter 1, this is not limited to the riding rice transplanter 1, and the engagement and disconnection of the clutch 25 can be controlled by pushing and pulling a wire such as the Bowden wire 39. Of course, the present invention may also be applied to other mobile agricultural machines.

As explained above, according to the present invention, the operating lever 49
Since the lever can be moved up and down, there is no interference with other operating levers, improving work efficiency.

Since the operating lever 49 does not protrude significantly in the front-rear direction into the space below the driver's seat as in the conventional case, it does not get in the way when getting on and off, and the safety of the worker during work can be ensured.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a riding rice transplanter to which the present invention is applied, Fig. 2 is a schematic diagram showing the operation system of the foot position stop device for the seedling platform, and Fig. 3 is a plan cross-sectional view showing the transmission case. FIG. 4 is an operation diagram showing the operation of the driven roller, FIG. 5 is a perspective view showing the operation device for the clutch disconnection/disconnection wire, and FIG. 6 is an operation diagram showing the operation of the clutch disconnection wire operation device. 1... Mobile agricultural machine (riding rice transplanter), 6...
・Engine, 7... Driver's seat, 12...
Operating device, 15... Working device (planting device),
20... Seedling stand, 25... Clutch, 39... Bowden wire, 39b. 39b'...Outer wire, 49...
...Operate '<-X 53.53'... Actuation plate, 55.55'... Guide pipe.

Claims (1)

[Claims for Utility Model Registration] 1. A working device that has a clutch and performs various tasks using the rotational force transmitted by the clutch, and further includes an operating device installed around the driver's seat, and an operating lever of the operating device. In a mobile agricultural machine where the operation of the operating device can be interrupted by operating the clutch via the Bowden wire, the operating lever is supported so as to be movable up and down. One end of the actuating plate is rotatably supported, and the other end of the actuating plate is provided with a guide pipe which is regulated to move only in the horizontal direction, and the Bowden wire is attached to each guide pipe. An operating device for a clutch disconnection wire, which is configured to fix one end of the outer wire and move an operating lever up and down to change the spacing between the outer wires to connect and disconnect the clutch. 2. The scope of the claim for registration of a utility model, which uses a riding rice transplanter equipped with a device for stopping the seedling bed in a fixed position as a mobile agricultural machine, and is configured so that the seedling bed can be stopped in a fixed position by operating the operating lever up and down. 2. The clutch disconnection wire operating device according to item 1.