JPS63141510A - Chasis height detector of rice planter - 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] (b) Industrial application field The present invention relates to a vehicle height detection device for a rice transplanter.

(B) Conventional Technology Conventionally, walking type rice transplanters have been configured so that the machine body runs stably by raising and lowering the wheels using hydraulic pressure or the like in response to changes in the M board. However, walk-behind rice transplanters are configured with front balance, so when replenishing seedlings in the field, etc.
When the operator takes his hand off the handle, the sensor float sinks into the mud, the wheels descend, and the machine tilts further forward, which has the disadvantage of ruining the planting surface as the float sinks. In order to solve the problem, Mikoaki
As shown in Japanese Patent No. 60-36009, a vehicle has been devised that is provided with a restraint AM that prevents only the switching of the switching valve to the wheel lowering side in conjunction with the disengagement operation of the main clutch.

(C) 8 points While the invention is trying to solve the problem, however,
The above-mentioned restraint L'lFM only works when the wheels are lowering, so it is invalid when the aircraft is lowering, and when the main clutch is operated, if the hydraulic valve etc. is switched to the wheel lowering operation side, It is necessary to return this to the neutral position, but this hydraulic valve is connected to the sensor rod, and returning the opposing valve to the neutral position requires a large amount of force, and this force is added to the operating force of the main clutch. , there is a drawback that large force is required to operate the main clutch, and in order to operate the above-mentioned hydraulic valve regardless of the sensor float, it is necessary to interpose a buffer mechanism between the counter valve and the float. The disadvantage was that it was complicated.

(d) Means for solving the problem In this invention, the mechanism for detecting holes in the machine body interposed between the machine body and a sensor float that slides on the planting surface of the field 3!
A clutch configured to connect and disconnect the power transmission is interposed in the path, and the clutch is connected to a main clutch operating lever that operates the main clutch that connects and disconnects the power transmitted from the engine to each part of the aircraft. Therefore, it is an object of the present invention to provide a vehicle height detection device for a rice transplanter, which is configured to operate a clutch by manipulating the same lever.

(E) Function/Effect According to the present invention, at the same time as the main clutch is switched, the clutch in the detection operation transmission path between the sensor float and the traveling aircraft is disengaged, and the float is put into an idle state, and the flow from the float is reduced. Since the operation to the hydraulic valve, etc. is no longer transmitted, the hydraulic valve, etc. becomes free, and the wheel lowering operation side or,
Even if it is switched to the ascending example, the counter valve automatically returns to the neutral position, stopping not only the upward movement of the aircraft but also the downward movement, which stabilizes the aircraft and facilitates the operation of the main clutch. This has the effect of simplifying the structure without requiring a buffer mechanism.

(F) Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a traveling rice transplanter (A), and FIG. 2 is a plan view thereof.

The front part of the fuselage (1) is equipped with a prime mover part (2), and behind it is a mission part (3).
3), a shaft case (4) is provided to protrude directly behind the transmission part (3), and abbreviated left and right transmission shaft cases (5) (5°) extend separately from the left and right sides of the transmission part (3).

A planting mission case (6) is connected to the rear end of the shaft case (4).
6), the base end of a planting frame (7) is connected, and the planting frame (7) is formed to extend rearward and upward, a handle (8) is attached to the upper end, and a seedling stand support is attached to the middle part. Frame (9
) A seedling platform (10) with a height of 8 m in the front and low back is installed in series through which 4 rows of seedling mats can be placed.

The planting mission case (6) is rotatably provided with two inner left and right planting claws (11) (11 degrees) among the four planting claws.

Furthermore, the left and right transmission shaft cases (5) (5') connected to the left and right sides of the mission part (3) are horizontally projecting cases (12) that protrude horizontally from the mission part (3) to the left and right outside.
) (12°) and each horizontally extending case (12) (12'
) left and right longitudinal cases (13) connected rearward from the tip.
(13°), and the left and right longitudinal cases (13°).
3) At the rear end of (13'), there are left and right planted gear cases (14').
) (14°) and the same gear case (14) (14'
), outer left and right planting claws (15) (15') of the outermost two rows of the four planting claws are successively provided.

(16) (16') are swing cases that are interlocked on the left and right sides of the mission section (3), and (17) (17')
are the left and right wheels connected to the swing case (16) (16°), (18) (18') are the side floats, (
19) indicates a sensor float.

In particular, in the present invention, as shown in FIG. 3, a central IFm (23) and a coaxial (2
3), the detection operation transmission path (
R), the vertical movement of the center float (19) is detected by the same axis (23) via the same path (n), and the same axis (23) is detected by the same axis (23).
23) The transmission is transmitted to the hydraulic valve via the transmission lever (28) and wire (22) connected to one end, and the hydraulic cylinder (20) communicating with the hydraulic valve is actuated to drive the left and right wheels (17).
(17') is configured to move up and down, and the pivot (17') is configured to move up and down.
Clutch (23) for connecting/disconnecting transmission of the detection operation to
5) to connect the clutch (25) to the wire (26)
The main clutch operating lever (27) is connected to the handlebar (8) via the main clutch operating lever (27).

The clutch (25) has a pivot shaft (2) as shown in FIG.
3) is divided into left and right pivots (29) (29') approximately in the center, and a fixed claw body (30) and a sliding claw body (30) are attached to this divided part.
31) to connect the sliding claw body (31) to the fixed claw body (30
) The spring (32) is biased in the direction of the wire (26).
The detection operation transmission of the clutch (25) is cut off by the operating force from the main clutch operating lever (27) transmitted through the main clutch operating lever (27).

Therefore, when the main clutch operation lever (27) is turned off, the power transmission from the engine to each part of the aircraft is cut off, and at the same time, the clutch (25) in the detection operation transmission path (R) is cut off, and the sensor float (19) is cut off. Both the hydraulic valve and the hydraulic valve become free, and the hydraulic valve returns to the neutral position and the left and right vehicles m (1
7) Since the vertical movement of (17°) is stopped and the vertical movement of the body (1) is stopped, the planting surface is prevented from becoming rough due to sinking of the above-mentioned float.

In particular, when operating the main clutch operating lever (27), the operating force of the clutch (25) in the detection actuation transmission path (R) is also applied, but since the clutch (25) is disengaged, only the operating force is applied, so the force is small. This means that the same lever operation can be performed easily.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of a rice transplanter having a vehicle height detection device according to the present invention. FIG. 2 is a plan view of the same. FIG. 3 is an explanatory diagram of the detection operation transmission path. FIG. 4 is an explanatory diagram of the clutch on the same route. (^): Rice transplanter (R): Detection operation transmission path (1): 1 unit (19): Sensor float (25): Clutch (27): Main clutch operating lever Fig. 3 Fig. 4

Claims (1)

[Claims] 1) In the height detection operation transmission path (R) of the aircraft body (1), which is interposed between the aircraft body (1) and the sensor float (19) that slides on the planting surface (21) of the field, A main clutch operating lever (27) that operates a main clutch that connects and disconnects the power transmitted from the engine to each part of the aircraft, with a clutch (25) configured to connect and disconnect transmission interposed therebetween. A vehicle height detection device for a rice transplanter configured to be connected to the lever (27) and to operate the clutch (25) by operating the lever (27).