JPS60176509A - Running apparatus of agricultural working machine for rice field - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traveling device for an agricultural machine for paddy fields, and more specifically, a traveling device is provided at the bottom of a traveling vehicle body having a propulsion wheel that is moved up and down by a hydraulic device according to the depth of the tiller. A uni-moving soil leveling float for sliding on the rice field surface is installed, and the vertical movement of this soil leveling float switches the switching pulp of the hydraulic system to control the vertical movement of the propulsion wheels. The present invention relates to a traveling device for a paddy field agricultural machine equipped with the following.

Conventionally, in the traveling device of this type of agricultural machinery, when working in rice fields, the transmission of the propulsion wheels and the transmission of the working machine are carried out in one unit.
It is known that the upward movement of the leveling float is prevented by the "disengage" operation of the main clutch. For this reason, it was possible to prevent the propulsion wheels from moving downward and becoming unstable when work was stopped in a paddy field, but when turning, the power transmission on the work equipment side is cut off. The structure was such that the ground leveling float pushed the mud and the paddy wheels moved downward, raising the center of gravity of the aircraft and causing it to turn in an unstable state.

This invention automatically limits the switching operation of the hydraulic switching pulp by operating the running latch and the work clutch, and automatically stabilizes the aircraft to achieve ideal aircraft stability when the work is completely stopped or when a partial stop is made, such as when turning. The purpose of this project is to create a running device for agricultural machinery for paddy fields that maintains its condition. .

A walk-behind rice transplanter, which is an embodiment of the present invention, will be described in detail based on the drawings. (1) is a running vehicle body, with a running gear box (2) attached to the front and a planting gear box (3) attached to the rear. , an engine stand (
4) is fixed, and a control hand/shock 5) is attached to the rear of the planting gear box (3). (6) is an engine, which is placed on an engine stand (4).

(7a) and (7b) are chain cases whose bases are freely pivoted to bosses protruding on both left and right sides of the traveling gear box (2), and propulsion wheels (81L) and (8t, +
) is supported on a shaft and is configured to be rotated by transmission.

(9) is a hydraulic device, which is made up of the hydraulic circuit shown in Fig. 3, (II is a hydraulic pump, (11) is a hydraulic pulp, QX5 is a hydraulic cylinder device, 03 is a hydraulic tank,
04) is an oil tank. And this hydraulic system (
9) is mounted on the upper part of the traveling gear box (2), and the piston (12a) of the hydraulic cylinder device 04 is installed facing rearward, and the left and right center of the balance rod 0υ is pivoted to the tip of this piston (12a). , connect the left and right tips of this balance rod OQ to the -y-mu (16a) and (16b), which are integrated with the left and right chain cases (7a) and (7b), and link them (17a).
) and (17b) are T-connected, and when the piston (12a) protrudes, the propulsion wheels (Ba, ) and (8b) move downward.

Section 0 is a leveling float, with left and right propulsion wheels (8a) and (8
b) It is located in between, and the rear part is pivotally connected to the traveling vehicle body (1) with a horizontal pin 00, and the front part is an engine stand. Expand/reduce link (a)
It is installed freely up and down through.

121) is a switching arm for the hydraulic switching pulp 0υ, which switches the pulp (11) so that the piston (12a) is protruded when the front α moves upward, and vice versa when it moves downward.
12a) is configured to be switched to retract.

(c) is a pulp restriction mechanism, which has protrusions ((a) and (b)) in front and behind the pulp shaft (a) mounting position of the switching arm 01).
), and a locking piece 09 (b) which is pivoted to the pulp case with a pin (c) is provided between the protrusions (a) and 2), and the lower end of the locking piece 09 (b) is provided with a rest. Part ←)・(1)) is the protrusion (
(A) and ←) can be maintained, and the switching operation of the hydraulic switching pulp αυ can be restricted.

)・(branch) indicates a spring.

(To) is an agricultural machine, and in the example shown is a rice transplanter, which reciprocates left and right with the seedlings placed on the seedling planting rod 0η attached to the planting gear box (3) by a crank and a swinging arm. It consists of a seedling tank 02, and is configured so that the seedlings in the seedling tank 02 are divided into individual plants and planted.

03 is a running latch, which is installed in the running gear box (2) and configured to be turned on and off with a lever (33a), and is operated with a running latch and a latch control lever (b) attached to the control handle (5). Possibly linked by wire (7).

(G) is the working clutch, and in the example shown, the planting gearbox (
3), and is provided with the ability to turn on and off with a lever (36a), and is interlocked with a wire (to) so that it can be operated with a work clutch operating lever (b).

The wire (G) interlocks the locking piece with the moving latch operating lever (B), and it connects the moving latch (to) with the moving latch operating lever (B).
When the lock is inserted, the locking part (c) is located at the front and rear center of the protruding part (a) and (b) as shown in FIGS. 4 and 6, and the hydraulic switching pulp Qυ is in a position where it can be switched freely, and when it is set to "off", the retaining part (a) engages with the protrusion (a) to prevent the soil leveling float 0 from moving upward as shown in Figures 5 and 7. It is configured so that it is in a position where

・The wire θ is for interlocking the locking piece (5) and the working clutch operating lever (b), and is used to connect the working clutch (to).
When "person 1" is set, the locking part ('b) of the locking piece (a) becomes the fifth person.
As shown in the figure and Fig. 6, the pulp 0υ is located at the center of the front and back of the protrusions (a) and (b), so that it can be switched freely.
When set to ``OFF'', the locking portion (b) engages with the protrusion (b) as shown in FIGS. 4 and 7, thereby preventing the downward movement of the leveling float θ.

In the figure, 01) indicates a float for dissipating wheel marks, θ pier indicates a fuel tank, and 0 east indicates a bonnet.

To explain the operation of the upper part, seedlings are placed in the seedling tank 02, each rotating part is transmitted by the engine (6), and seedling planting work is started in the paddy field. That is, 0 barrels of land leveling float,
The wheel trace removal float θ◇ touches the top soil of the paddy field and the propulsion wheel (
8a) and (8b) are brought into contact with the tiller and rotated, and the traveling vehicle body (
1) will be promoted.

And a seedling tank 0 in which the number of seedlings 01) moves back and forth from side to side.
The seedlings in 2 are divided and planted in the upper part of the surface of the paddy field, which has been leveled using a land leveling float 08).

During seedling planting, it is natural to turn the travel clutch operating lever (goods) and work clutch operating lever (to) "on".
It is operated to the side, and as shown in Fig. 6, both the part (a) and the width of the drawing body 1 of the handle 11-kata-bi/(turn) are in the center of the front and rear protrusions (a) and υ) of the pulp switching arm Q1). Positioned hydraulic switching pulp 0
1) is in a position where it can be switched freely.

Therefore, when the paddy field is deep, the leveling float 08) is used.
Switch the switching pulp 01) so that the piston (12a) protrudes and propulsion wheels (8a) and (81)) 'e
Can move up and down. On the other hand, when the soil is shallow, the switching valve 0 moves the leveling float α8) downward and retracts the piston (1-2a).
1) to move the propulsion wheels (8a) and (8b) upward.

Next, when you want to temporarily stop the work because the number of seedlings in the seedling tank is running low, turn the running latch (to) and the working clutch (to) to "off" with the operating levers (b) and (to). ”. Then, as shown in Figure 7, the locking part (a) moves to the protrusion (a) side, the locking part (b) moves to the protrusion (b) side, and the switching valve 0) cannot be switched to either direction. Thus, the propulsion wheels (8a) and (8b) are maintained in a stable state without moving up or down.

Next, when turning with only the work clutch (to) in the "off" position, as shown in Figure 4, the locking part (b) moves to the protrusion (b) side and the leveling float 0@ moves downward. Part of the side is free and the grading float can be rotated without pushing mud.

In addition, when only the running latch (to) is turned off, it becomes as shown in Fig. 5, and the soil leveling float mark A is prevented from becoming two parts. can be stably held.

In addition, as another embodiment of the Pulp Restriction Mechanism (Incorporated), as shown in FIGS. 8 to 11, the locking piece (A) is omitted, and the locking piece IJ:
Connect only one piece (C) and wire θ below the pin (C).
1 through the spring (29a), and the pin (c).
It is also possible to have a configuration in which a long hole (C) in the front and back direction is bored in the second part, the pin ■ is fitted into the long hole (C), and this pin θΦ is connected to the wire. , when the running latch (to) and the working clutch (g) are both handled by one person, the situation shown in Figure 8 is the same as in Figure 6 above, and both are
9 is the state shown in FIG. 9, which corresponds to the state shown in FIG. 5, in which only the upward movement of the 10th clause of the ground leveling flow is prevented. In addition, when the running latch (c) is in 1 position and the work clutch (to) is 1 disengaged, the downward movement of clause 10 of the leveling flow is prevented as shown in Figure 10, and conversely, the running latch (to) is When the clutch is disengaged (1), the working clutch (to) is engaged; and when the clutch is engaged (1), the upward movement of the leveling float 0 is prevented (11), as shown in Fig. 1I.

In addition, the running latch (to) is at least the propulsion wheel (step,
It is sufficient that the rotation of (8b) is stopped, and it may be mainly a groove that can turn on and off everything except the rotation of the hydraulic bonder 01.

As described above, the present invention provides a traveling vehicle body (1
) is provided with a soil leveling float 0 barrel which is mounted to move downward due to the depth of the plowing platform, and the hydraulic system (9)
Hydraulic switching pulp 0η and soil leveling float 08 move the propulsion wheel (8a) (81)) downward when the leveling float a moves upward, and conversely, when the leveling float 0 barrel moves downward, the propulsion wheel (8a) moves downward.
8a) and (8b) are configured to move upward, and a paddy field agricultural machine (7) is attached to the traveling vehicle body (1), a pulp limiting mechanism that limits the switching operation of the hydraulic switching pulp 01). (Foundation), and this restriction mechanism (Foundation) is interlocked with both the running latch (C) that stops the running of the traveling vehicle body (1) and the work clutch (C) that stops the operation of the agricultural machine (7). When the image clutch (c) is "on - 1, the hydraulic pressure switching valve 01) can be switched freely, and the running latch (c) is 1 off", at least the propulsion wheel (8a) (8b) restricts switching to the downward movement side,
A structure of a traveling device of a paddy field agricultural machine that restricts the switching of propulsion wheels (8a) and (8b) to the upward motion side when the running latch 0] is 1 engaged and the working clutch 2 is OFF. When temporarily stopping work while working in a paddy field,
The hydraulic switching valve prevents the propulsion wheels from switching to the downward movement side, allowing the ground leveling float to stop in a stable state with increased ground pressure, and when turning the work clutch to 1 disengage. A hydraulic switching valve is freely switched on the side that moves the propulsion wheels downward, preventing only the upward movement control of the propulsion wheels, preventing the ground float from pushing mud, and moreover, ensuring accurate control without unnecessarily raising the center of gravity of the vehicle body. It has the effect of being able to turn around.

[Brief explanation of drawings]

The figures show a walking-type rice transplanter which is an embodiment of the present invention, in which Fig. 1 is a partially sectional side view, Fig. 2 is a simplified plan view thereof, and Fig. 3 is a hydraulic circuit diagram. FIGS. 4 to 7 are side views showing the operating mechanism of essential parts, and FIGS. 8 to 11 are side views showing separate operating mechanisms of essential parts. Symbols in the figure: (1) is the traveling vehicle body, (8a) and (80) are the propulsion wheels, (9) is the hydraulic system, 0]) is the hydraulic switching valve,
θ8) is the leveling float, (c) is the pulp restriction mechanism, (7
) indicates an agricultural machine, (c) indicates a running clutch, (c) indicates a running clutch. Patent Applicant Name Iseki Agricultural Machinery Co., Ltd. Representative Akira Iseki Takashi $3 Figure 5 Figure 8 Figure 9

Claims (3)

[Claims] (1) Propulsion wheels (
A soil leveling flow 1-Q8) is installed at the lower part of the traveling vehicle body (1) having the hydraulic system (8) and (81)) so as to move downward depending on the depth of the plowing platform. When the soil leveling float moves up, the propulsion wheels (8a) and (8b) move down, and conversely, when the soil leveling float 08) moves down, it propels Wheels (8a)・(8
11) configured to move upward 7, and in which a paddy field agricultural machine (g) is attached to the running vehicle body (1), a pulp limiting mechanism IN' that limits the switching operation of the hydraulic switching valve 0]); f: Provided, and this restriction mechanism (goods) is installed on the running vehicle body (
1) Running latch race and agricultural machine that stops running (to)
The hydraulic switching pulp 01) can be switched freely when both latch irons (G) are turned on, and the latch (C) that operates is 1 off, at least the propulsion wheels (8 phantom/
(8b) A latch (
A traveling device for a rice paddy agricultural machine, in which switching of propulsion wheels (8a) and (8b) to the upward movement side is restricted when the switch (to) is "on" and the working clutch (to) is (off). (2) The propulsion wheel (8a) is turned off when the latch for running
- (81)) A traveling device for a paddy field working machine according to claim 1, which restricts switching to the downward movement side. (3) Claims 1 and 2 provide that the main clutch is a main clutch that disengages the entire power of the traveling vehicle body (1) and the agricultural machine (towards the vehicle) by one person (from the beginning of the traveling direction). The traveling device for the agricultural machine for paddy fields as described in 1.