JPS62265911A - Walking type rice field working machine - 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] [Industrial Field of Application] The present invention maintains a working device such as a planting device at a set height level with respect to the mud surface regardless of changes in the depth of the plow. The present invention relates to walking rice paddy working machines such as walking rice transplanters. Specifically, a working device and a control handle are attached to the rear side of a traveling machine that is equipped with wheels for running the plowing machine on the left and right sides that can be raised and lowered, and the said traveling machine is grounded on the mud surface with a set pressure to carry out the work. A grounding float that moves up and down according to changes in the height of the device's mud surface, and a grounding float that touches the mud surface at the left and right grounding parts, and as the traveling body rolls, the floating body moves forward and backward around the axis. a lifting device that lifts and lowers the vehicle so that the height of the working device relative to the mud reaches a set level in conjunction with the vertical movement of the ground float; The present invention relates to a walking type paddy field working machine that is equipped with a rolling device that raises and lowers the wheels in conjunction with the rocking of a rolling detection sensor so that the rolling posture of the working device on the mud surface becomes a set posture.

[Conventional technology]

This walk-behind paddy field work machine uses a hard and soft mud surface to prevent pitching and foot pressure from the ground float, which can cause work defects such as uneven posture of planted seedlings and floating seedlings. It is desirable to adjust the set ground pressure according to
As shown in Japanese Patent No. 22, the set ground pressure of the ground float can be adjusted by manual operation.

[Problem that the invention seeks to solve]

However, when using the conventional walk-behind paddy field work machine, the adjustment of the set ground pressure is left to the human hand, so it is easy to forget to adjust or make incorrect adjustments.
Even for experienced users, it was difficult to adjust the ground pressure to an appropriate setting depending on the hardness of the mud surface. As a result, pitching and mud pushing by the grounding float were unavoidable, resulting in poor work.

An object of the present invention is to prevent the above-mentioned work defects.

[Means for solving problems]

A characteristic configuration of the walking type paddy field work machine according to the present invention is that the left and right grounding parts of the rolling detection sensor are provided so as to be able to swing up and down integrally around the left and right axis, and the surface grounding part of the rolling detection sensor The ground pressure automatic adjustment means is provided to reduce the set ground pressure of the ground float as the float swings downward. The effects and effects thereof are as follows.

[For production]

Since the 01J ring detection sensor can swing up and down not only in rolling but also around the left and right axis, the softer the mud surface, the more the surface area penetrates below the mud surface, and the rolling detection sensor The amount of downward swinging of the sensor around the left-right axis increases.

The rocking posture of the rolling detection sensor about the left-right axis corresponds to the hardness and softness of the mud surface, and the rolling detection sensor acts as a mud surface hardness detection sensor. The rolling detection sensor is used as a mud surface hardness detection sensor, and the ground pressure automatic adjustment means decreases the set ground pressure of the ground float as the rolling detection sensor swings downward. By setting the ground pressure according to the hardness of the mud surface, it is possible to prevent pitching and mud pushing due to the ground float.

〔Effect of the invention〕

Therefore, the present invention makes it possible to reliably prevent work defects caused by pitching and mud pushing by the ground float by a simple and economical means that effectively utilizes the rolling detection sensor.

〔Example〕

Next, examples of the present invention will be shown.

As shown in Fig. 3, a planting device (3) as a working device and a control handle ( 4), and at the same time, a power unit (6) including an engine (5A) is installed on the front side of the traveling body (2), and
The planting device (3) is equipped with a grounding float (6) that swings up and down according to variations in the height of the planting device (3) relative to the mud, thereby creating a walk-behind rice transplanter that is an example of a paddy field work machine. configure the machine.

As shown in FIG. 1, the left and right wheels f1) each have a support frame (IA
), and is attached to the traveling body (2) via the support frame (IA), and the right and left ends of the frame (7), which is movable back and forth and has a left-right orientation, and the support frame (IA) are connected to each other by connecting the corresponding ones of the support frame (IA) with each other. ), the frame is structured so that it swings up and down as a unit when the force moves back and forth.

The float (6) is configured to have a length that almost reaches the front end of the traveling body (2).

In addition, the walking rice transplanter automatically raises and lowers the planting device (3) in conjunction with the up-and-down movement of the float (6) so that the height of the planting device (3) relative to the mud reaches a set level. A rolling detection sensor (9) that detects the rolling attitude of the equipment (9) and the traveling body (2), that is, the planting device (3), with respect to the mud surface.
10), a rolling device (11) that controls the traveling body (2) to the set rolling based on the detected attitude of the rolling detection sensor +j'' (10), and a rolling device (11) that controls the ground pressure of the float (6) to the mud surface. The ground pressure automatic adjustment means (I2) is provided to adjust the self-ground pressure fIjJ according to the hardness or softness of the ground pressure.

The lifting device (9) uses a hydraulic cylinder (9A) as an actuator to move the frame (7) back and forth, and lowers the car 11ii1 (11) relative to the traveling body (2), thereby raising the planting device ( 3) is reversibly raised together with the traveling body (2).Then, a rotary control pulp (9B) is connected to the hydraulic cylinder (9A).
), as shown in Fig. 1, the float (6) is swung to the set posture with the attitude of the float (6) relative to the planting device when the planting device @ (3) is at the set level as the set posture. When moving, the control pulp (9B) is in the neutral position where the lift is stopped, the float (6) is in the swinging position above the set position, and the control pulp (9B) is in the raised position of the planting device. When the float (6) swings downward from the set position, the control rod (9B) is installed near the front end of the float (6) so that the control loop (9B) is located at the lowered position of the planting device. (9a) and middle g
It is linked via the IJ link 9b).

As shown in FIGS. 1 and 2, the rolling detection sensor (10) has a float-shaped ground contact portion (
10B) is attached to the front part of the traveling machine body (21), and the left and right ground contact parts (10B) are mounted around the longitudinal axis (a) so that they move up and down in a contrary manner. It is freely movable and is swingably attached around the left and right axis (b1) so that the left and right ground contact parts (10B) can move up and down integrally. - By keeping the mud surface attitude around the longitudinal axis (a1) constant on the mud surface of the left and right ground contact parts (10B), the traveling aircraft (2) will move as the traveling aircraft (2) rolls. It is configured to swing relative to the longitudinal axis (a1) with respect to (2), and to detect the amount of rolling of the traveling aircraft (2) based on the amount of relative rocking. To explain in detail the means of attachment to the traveling aircraft (2), a front-rear axis (a platen that can swing freely around a1) (10C) is attached, and this platen) (10C) is attached to the traveling body (2).
0C), the horizontal rod (10A) is positioned on the left-right axis fbl, and the left-right center portion of the horizontal rod (10A) is rotatably housed around the left-right axis (b1).

The rolling device (1 is a hydraulic cylinder (IIA)
By using the O7l frame (7) as an actuator, by swinging the O7l frame (7) around the vertical axis X using its left and right center portions as fulcrums, the left and right TL wheels (1) are raised and lowered in a contradistinct manner, and the traveling aircraft ( 2), in which a rotary control pulp (IIB) for the oil field cylinder (11A) is connected to the rolling detection sensor (10).
1, the rolling attitude of the traveling aircraft (2) on the mud surface is maintained at the set attitude number. The means for interlocking the control pulp (IIB) with the rolling detection sensor (+01 is the platen)
(10C), which engages with the retaining member (10a) connected to the rolling detection sensor and swings around the vertical axis (a+) in response to swinging around the longitudinal axis (a1) of the rolling detection sensor. Link (lla) Hi, attach the rod (l) to this first link (lla).
a second link (llc) that swings about the vertical axis (a2) in conjunction with the second link (li
e), and an eighth link (lid) that swings around the longitudinal axis (a3) to rotate the control pulp (IIB) spool.
) is in the set position, the control pulp (IIB)
is located in the neutral position, and when the traveling body (2) rolls downward to the left, the control pulse 7' (IIB) is positioned at the right low link position that lowers the left wheel D), and when the traveling body (2) rolls downward to the left, the control pulse 7' (IIB) is positioned to When rolling downward, the control pulp (IIB) is positioned at a left rolling position where the right wheel (1) is lowered.

Before the ground pressure automatic adjustment means, a ground pressure setting tension spring (12A) is engaged at one end of the relay link (9b) of the lifting device (9) to urge the float (6) downward. A link (12B) is provided which fixes the other end and changes the strength of the tension spring (12A) by swinging, and this link (12B) and the horizontal rod (10A) of the rolling detection sensor (10) are provided. ) is reversibly linked to the arm (10b) fixed to the arm (10b) in such a way that the tension of the tension spring (12A) increases as the ground contact part (LOB) swings upward (12C).
It is configured with the following.

Therefore, as the hardness and softness of the mud surface increases, the downward movement resistance of the ground contact portion Cl0B due to the mud surface becomes smaller.
The grounding portion (10B) moves downward, and as a result, the grounding pressure set by the tension spring (12A) becomes smaller, and the amount of sinking of the float (6) below the mud surface becomes smaller.

The above-configured walking rice transplanter (according to this, the ground pressure adjustment of the float (6) according to the hardness and softness of the mud surface and the rolling attitude adjustment of the traveling body (2), that is, the planting device (3)) This is automatically performed based on the rolling detection sensor (10).
0) is located at the front of the traveling machine (2), so when turning at the edge of the field, the rear of the traveling machine (2), that is, when lifting the planting device (3), As a result, the front part of the traveling aircraft (2) moves downward, and as a result, the rolling detection sensor (10) relatively swings downward, the set ground pressure becomes smaller, and the float (6) moves downward. ) is reduced, and it is possible to prevent mud from being pushed by the float (6) when turning while leveling the mud surface with the front end of the float (6).

[Brief explanation of drawings]

The drawings show an embodiment of the walking type paddy field work machine according to the present invention,
FIG. 1 is a perspective view of the main part, FIG. 2 is a front view of the main part, and FIG. 3 is an overall side view. (1)...wheels, (2)...traveling body, (3)...work bag, (4)...control handle, (6 )...Grounding body, (10B)・
...Grounding part, (10) ...Rolling detection sensor, (9) ...Elevating device, (ll) ...
...Rolling device, (1) Ground pressure mill #adjustment means.

Claims (1)

[Claims] A working device (3) and a control handle (4) are attached to the rear side of a traveling machine (2) equipped with wheels (1) for traveling the plowing machine on the left and right sides that can be raised and lowered, and a working device (3) and a control handle (4) are attached to the traveling machine (2). ,
A grounding float (6) that touches the mud surface with a set pressure and moves up and down according to variations in the height of the work device (3) relative to the mud surface, and a grounding float (6) on the left and right sides (10B) that makes contact with the mud surface. The traveling aircraft (
A rolling detection sensor (10) is attached to the traveling body (2) that swings around the longitudinal axis (a) as the rolling body (2) moves, and is linked to the vertical movement of the ground float (6). a lifting device (9) that raises and lowers the wheel (1) so that the height of the working device (3) relative to the mud reaches a set level; A walking paddy field working machine is provided with a rolling device (11) that raises and lowers the wheel (1) so that the rolling posture of the working device (3) on the mud surface becomes a set posture, the rolling detection sensor The left and right grounding portions (10B) of (10) are provided so as to be able to swing up and down together around the left and right axis (b), and this rolling detection sensor (10)
A walking type paddy field work machine is provided with a ground pressure automatic adjustment means (12) that reduces the set ground pressure of the ground float (6) as both the ground contact parts (10B) swing downward together.