JPS6010344Y2 - Speed lever device for riding rice transplanter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a speed change lever device of a speed change device in a riding rice transplanter.

Conventionally, this type of riding rice transplanter has a spare seedling stand, and when working by placing spare seedlings on the stand, when the seedlings on the seedling stand become insufficient as the work progresses, The rice planting work is made more efficient by feeding the seedlings on the preliminary seedling stand to the seedling stand.

However, when supplying spare seedlings, if the center positions of the spare seedling stand fixed to the machine and the seedling stand, which is constantly moving from side to side during work, do not roughly match, the smooth supply of spare seedlings will be hindered. Therefore, the seedling stand is equipped with a fixed position stop device to stop the seedling stand at the center of the moving process.
By the action of this device, when the seedling stand came to the center and the spare seedling stand could be lined up, the main clutch was disconnected via a wire or the like, and the seedling stand was stopped while the machine was moving.

However, during the preliminary seedling supply work, as the operator moves back and forth on the machine, he or she may inadvertently touch the operating lever of the fixed position stop device, causing the lever to return to the running position.

When the lever returned to the running position, the main clutch was engaged and the machine suddenly took off with the worker on board who was supplying preliminary seedlings, posing a risk of serious accidents such as the worker falling from the rice transplanter. .

Therefore, in the present invention, the speed change lever of the transmission is interlocked with the fixed position stop device of the seedling stand, and the stop device disengages the main clutch when supplying preliminary seedlings, and at the same time returns the speed change device to the neutral state. It is an object of the present invention to provide a speed change lever device for a riding rice transplanter that eliminates 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. The driver's seat 7 is located in the middle.

The driver's seat 7 is provided with a steering wheel 9 and a seat 10, and is further provided with a speed change lever 11, a seedling stand foot position automatic stop operation lever 12, and the like.

In addition, a spare seedling stand 13 and a transmission device 14 are provided at the rear of the fuselage 5.
is arranged, and further behind the aircraft 5 is a planting device 15.
is supported by a link 16 and a hydraulic device 17 so as to be able to move up and down.

The planting device 15 has 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 bottom of the transmission case 22, and the input shaft 23 receives the power from the engine 6 to the main clutch 2.
5. They are connected via a transmission shaft 26, a transmission 14, etc.

Furthermore, 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 27 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 can be reciprocated in the directions of arrows A and B in the figure by the rotation of the traverse cam 27, and the seedling stand 20 can also be moved in the same direction.

On the other hand, a cam plate 33 having a chevron-shaped cam curve is formed on the side of the traverse cam 27 of the slide block 31, and the cam plate 33 is such that a driven roller 36 pivotally supported by an arm 35 can come into contact with the cam plate 33 in a freely movable manner. It is composed of

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.

At the tip of the lever 37, as shown in FIG.
40a is pivotally connected, and one inner wire 3
9a passes from the planting device 15 to the lower part of the driver's seat 7 and is pivotally connected to a clutch lever 41 provided at the front of the fuselage, and rotates the clutch lever 41 in accordance with the movement of the inner wire 39a to operate the clutch 25. Can be intermittent.

In addition, the seedling stand foot position automatic stop lever 12 provided at the bottom of the driver's seat 7 has a push button 42 at the top.
By operating the push button 42, the lever 12 can be locked in the stop release position C and the stop position.

The operating lever 12 has an L-shaped lower portion, and its tip is connected to one end of an outer wire 39b of a Bowden wire 39 connected from the tip of the lever 37.

The other end of the outer wire 39b extends to the vicinity of the clutch lever 41, and is fixed to the bracket 44 there.

As already mentioned, the inner wire 39a is connected to the clutch lever 41, so when the operating lever 12 is operated and the lever 12 is pulled up to the stop position, the outer wire 39b moves forward, that is, to the left in the figure. 2 and pulls the inner wire 39a in the direction of arrow E in the figure, and thereafter the amount of pull of the inner wire 39a required until the clutch 25 is disengaged decreases.

Further, a clutch pedal 43 is connected to the clutch lever 41 via a clutch arm 45 and a rod 46, so that the clutch 25 can be operated independently by the foot.

By the way, the inner wire 40a of the other Bowden wire 40 extends from the planting device 15 to the lower part of the driver's seat 7, and is connected to a connecting fitting 47.

A long hole 47a is bored in the connecting fitting 47.
7a engages with a protrusion 11a provided at the lower end of the gear shift lever 11.

The gear shift lever 11 is rotatably supported by a pin 49 or the like in the middle thereof, and by tilting the operating portion 11b above the lever 11 forward from the neutral position N, that is, to the reverse position R on the left side in the figure, the gear shift device is activated. The transmission 14 can be set to the forward state by moving the transmission 14 from the neutral state to the reverse state and backward, that is, to the forward position F on the right side in the figure.

In addition, the outer wire 40b of the Bowden wire 40
Like the outer wire 39b of the other Bowden wire 39, one end is connected to the seedling stand stop position automatic stop lever 12.
The other end is fixed to the fuselage 5.

Since the present invention has the above-described configuration, when planting rice using the riding rice transplanter 1, as shown in FIG. put it in the forward position F and perform the rice planting work.

The power of the engine 6 is input to the transmission case 22 via the main clutch 25, transmission shaft 26, transmission 14, etc., and further rotates the traverse cam 27 via the chain 30 and sprocket 29, as shown in FIG. let

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 begins by repeatedly moving in directions A and B in the figure.

At this time, by moving the slide block 31 left and right,
The driven roller 36 also comes into sliding contact with the cam plate 33 near the center of the movement process of the block 31, and rotates so as to be lifted upward in FIG. The inner wires 39a, 40a are pulled in the H direction in FIG. 2 by a certain amount.

However, the inner wire 39
A cannot disengage the clutch 25, and the clutch 25 continues to transmit power.

Furthermore, the movement of the wire 40a is also transmitted to the connecting fitting 47, but as shown in FIG.
1 only slides a certain amount in the J direction in the figure while in sliding contact with the protrusion 11a, and does not act on the speed change lever 11 in any way.

Conversely, the shift lever 11 can be freely operated to the forward F1 and backward R positions, but the movement of the shift lever 11 at this time is caused by the movement of the shift lever 11 within the elongated hole 47a of the metal fitting 47.
The projection 11a of the wire 4 is simply slid.
There is no possibility that the lever 11 will pull 0a in the opposite direction.

Next, when the number of seedlings on the seedling stand 20 becomes small,
When trying to supply the spare seedlings on the top 3, as shown in FIG. This reduces the necessary amount of pulling of the inner wire 39a until it breaks.

In this state, when the driven roller 36 in the transmission case 22 comes into sliding contact with the cam plate 33 of the slide block 31, the center position of the movement stroke of the block 31, that is, the seedling stand 20 and the preliminary seedling stand 13 are aligned. When the desired position is reached, if the inner wire 39a is pulled in a certain amount in the H direction in FIG.
is transmitted to the main clutch 25 via the main clutch 25, and the main clutch 25 is disengaged.

When the main clutch 25 is disengaged, the operation of the rice transplanter 1 is stopped, 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.

Furthermore, when the operating lever 12 is placed in the stop position, the outer wire 40b also moves forward, that is, to the left in FIG. is also moving a certain amount in the J direction.

Therefore, by the operation of the driven roller 36, the wire 4
0a is pulled in the H direction by a certain amount, the protrusion 11a of the gear shift lever 11 in the forward position F and the connecting fitting 47
The elongated hole 47a contacts the left end in FIG.
As shown in the figure, the lever 11 is pulled back to the neutral position N, and the transmission 14 also enters a neutral state in which no power can be transmitted.

In this state, the operator raises the planting device 15 and supplies the preliminary seedlings from the preliminary seedling platform 13 onto the seedling platform 20.

When restarting the planting work, return the operating lever 12 to the stop release position C, and as shown in FIG. 2, the wire 39 a
, 40a, the clutch 25 is connected, and the connecting fitting 47 also moves in the L direction, and the gear shift lever 11 is released from the abutting engagement state with the elongated hole 47a of the fitting 47. , it becomes possible to freely operate from the lower forward position to the reverse position R again, and rice transplanting work can be started.

As explained above, according to the present invention, when the main clutch 25 is disconnected using the fixed position stop device when supplying preliminary seedlings and the seedling stand 20 and the preliminary seedling stand 13 are aligned and stopped at the center position, At the same time, the speed change lever 11 also enters the neutral position N, and the speed change device 14 also enters the neutral state, so if the operator carelessly touches the fixed position stop operation lever 12 during the preliminary seedling supply operation, the lever 12 moves to the stop release position C. Even if the starting clutch 25 is connected, the power of the engine 6 is cut off by the transmission 14, and the rice transplanter 1 does not start, allowing the work to proceed safely.

[Brief explanation of drawings]

Fig. 1 is a side view showing a riding rice transplanter to which the present invention is applied, Fig. 2 is a system diagram showing an outline of the seedling platform foot position stop device, Fig. 3 is a plan view showing the transmission case, and Fig. 4 is a side view showing a riding rice transplanter to which the present invention is applied. The figure is a side view showing the main parts of the gear shift lever, and FIG. 5 is an operation diagram showing the operation of the gear shift lever. 1... Riding rice transplanter, 11... Speed lever, 12... Seedling platform foot position automatic operation lever,
13... Spare seedling stand, 14... Transmission device, 20... Seedling stand, 25... Clutch, N... Neutral position .

Claims (1)

[Scope of utility model registration request] Spare seedling stands and planting are carried out using a riding rice transplanter equipped with a seedling stand that moves from side to side during operation and equipped with a seedling stand fixed position stop device that can align the seedling stand with the spare seedling stand when supplying spare seedlings. , a speed change lever of a transmission is interlocked with the seedling stand fixed position stop device, and the fixed position stop device disengages the main clutch when supplying spare seedlings, and at the same time returns the transmission to a neutral state. A speed change lever device in a rice transplanter.