JPS63198905A - Walking type 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] Industrial applications The present invention relates to a walking rice transplanter.

BACKGROUND OF THE INVENTION There has been a walking rice transplanter disclosed in Japanese Utility Model Application Publication No. 143319/1983. This rice transplanter had a running transmission case attached to the front end of the frame, and the engine was mounted on top of it.

Problems to be Solved by the Invention In conventional walk-behind rice transplanters, the front side of the vehicle body is very high, making it difficult for the operator to see the ground at the front of the machine body.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a traveling transmission case 2 mounted on the front side of a frame 1 extending in the longitudinal direction, and a planted transmission case 4 mounted on the rear side of the frame 1. The traveling transmission case 2, the frame 1, and the planted transmission case 4 form a substantially concave shape in side view, and the engine 3 is disposed in this concave portion. Chain case 5a with paddy wheels attached to the back on both left and right sides
.

The base side of the 5b is pivotally mounted so that the rear side can be rotated up and down. It is a walking rice transplanter that can be attached to the side.

Functions and Effects of the Invention According to the above-mentioned technical means, the height of the front part of the aircraft body can be lowered, the forward visibility can be improved, and the maneuverability can be improved.

Embodiment One embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a frame of a vehicle body, which has a cylindrical cross section. Reference numeral 2 denotes a traveling transmission case, which is attached to the front side of the frame 2. 3 is an engine, and the traveling transmission case 2
It is arranged on the rear side of the frame 1 and mounted on the upper part of the frame 1.

Reference numeral 4 denotes a planting transmission case, which is attached to the rear end of the frame 1. The engine 3 is configured to fit into a concave portion formed by the traveling transmission case 2, the frame 1, and the planted transmission case 4 when viewed from the side.

Reference numerals 5a and 5b denote chain cases, and the inner side of the base is rotatably pivoted to a cover part that covers the drive shaft protruding to the left and right sides of the traveling transmission case 2, and the rear end side is configured to swing up and down. There is.

6a and 6b are paddy axles, and the left and right chain cases 5,
5, and is configured to be rotated by transmission.

A control handle 7 has a base attached to the planting transmission case 4 and extends rearward and upward.

The transplanting device is made up of a seedling platform 8 for loading seedlings and a transplanting tool 9 for dividing and transplanting seedlings one by one from the seedling platform 8. The seedling platform 8 is connected to the control handle 7. It is supported on the upper side and is interlocked with the left and right reciprocating mechanism in the planting transmission case 4 by a lateral movement shaft 10 and a connecting fitting 11, and
The transplanting tool 9 is attached to both left and right sides of the planting transmission case 4 by a crank and a swinging rod.

Reference numeral 12 designates a hydraulic system unit, which includes a hydraulic pump case 13, a pair of left and right switching valve cases 14a, 14b, and a pair of left and right hydraulic cylinder cases 15a.

15b, etc., and is attached to the front side of the traveling transmission case l. 16a and 16b are valve switching arms.

Reference numerals 17a and 17b are soil pressure detectors, which are arranged at the lower front side of the aircraft body, separated from each other to the left and right. It is attached via a bending link to a metal fitting 18 that projects forward from the traveling transmission case 2 so that the section can move freely up and down.

Reference numeral 19 denotes a ground leveling float, which is located on the lower side of the fuselage and extends rearward from the front and rear center portion of the fuselage.The rear part is pivotally connected to the control handle part, and the front part is connected via a bending link so that it can swing vertically. and is attached to the frame 1.

Arms 20a and 20b are integrally attached to the chain cases 5a and 5b, and are attached to the hydraulic cylinder case 1.
5a, 15b piston 21a.

21b, L-shaped fittings 22a, 22b, and spring 23a.

23b.

24a and 24b are rods, and the soil pressure detector 17a,
17b and the valve switching arm 16a.

16b, and when the ground pressure of the detectors 17a, 17b increases and rotates above a certain level, the switching valves 25a, 25
b is switched and the piston 21a.

21b protrudes, the chain cases 5a, 5b are rotated downward, and the paddy axles 6'a, 6b are lowered, and conversely, the detector 17
When the ground pressure of the pistons a and 17b decreases and rotates downward by more than a certain level, the switching valves 25a and 25b are switched and the piston 2
1a and 21b are retracted, chain cases 5a and 5b are rotated upward, and paddy axles 6a and 6b are moved upward.

26 is a fuselage cover, and 27 is a starter lobe of the engine 3. The traveling transmission case 2 also serves as the hydraulic tank, and the oil in the case 2 is used as hydraulic oil.

To explain the action on the upper side, in a water field, when seedlings are placed on the seedling stand 8 and each part is rotated by the engine 3, the machine load is transferred to the pair of left and right paddy axles 5a, 5b, the soil leveling float 19, and the detector. While being received by 17a=17b, the machine is propelled by the rotation of the water ff1 wheels 6a and 6b that contact the tiller, and the transplanting tool 9 moves back and forth from side to side.The seedlings are divided into individual plants from the seedling platform 8. , land leveling float 19
Transplant to leveled soil surface. In this way, the rice transplanting work is carried out, but the pilot always pays attention to the surface of the paddy field in front of the aircraft, and when it gets close to the ridge, the power transmission to the transplanting device is cut off and the aircraft turns. do.

In this embodiment, the engine is not located at the front end of the fuselage, and the traveling transmission case 2, which is relatively short and heavy, is installed at the front. It is well-balanced, the front part of the machine does not stick out too high, and forward visibility is good, making it an extremely maneuverable walking rice transplanter.

In the rice transplanter of this embodiment, the hydraulic system unit 12, which is a heavier object, is installed in the front part of the traveling transmission case 2, so the front side of the machine can be made even heavier, shortening the overall length of the machine and improving the front-rear balance. You can make them take it.

During work, one side of the tiller surface became deeper.

When the aircraft tilts to the left or right, the ground pressure of the left and right detectors 17a, 17b fluctuates, and the detector on the downwardly tilted side is pushed up by the topsoil surface, so the valve switching arm on that side is switched via the rod. The piston of the hydraulic cylinder device is switched to protrude, the chain case on that side is pushed down, and the paddy wheel on the side that is tilted downward is moved down, restoring the tilt of the aircraft to a horizontal state. Conversely, if one side of the tiller surface becomes shallow and the machine tilts to the left or right, the left and right detectors 1
Since the ground pressure of 7a and 17b fluctuates and the detector on the side tilted upward hangs and descends, the valve switching arm on that side is switched via the rod so that the piston of the hydraulic cylinder device on that side is retracted. The chain case on that side moves up and the paddy axle on the side tilted upward moves up and the chain case on that side moves up.
Restore the aircraft's tilt to a horizontal state.

In this way, the aircraft is propelled while being automatically controlled to be in a horizontal horizontal state.

In the embodiment of the present invention, as shown in FIG.
By providing this, when the plowing surface is deep and the drive reaction force of the wheels becomes large and the handle load at hand becomes large, the balance eight 28 protrudes and the handle load can be reduced. In addition, as shown in FIG. 5, which has a different configuration from the upper embodiment, only one hydraulic cylinder device i15c is provided in front of the left and right center portions of the fuselage, and the above-mentioned type metal fitting is connected to this via a balance rod 29. 22a and 22b, and □This hydraulic switching valve 25c is connected to the left and right detectors 17a and 17b.
In the case of a simple walk-behind rice transplanter that does not have a left/right tilt control mechanism that switches by a detector 17o connected to the
A single balance weight 28 may be sufficient, and in this case, it will be more convenient to attach a tool box 30 to the piston 21c instead of the balance weight 28 as shown in FIG.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view thereof, Fig. 3 is a hydraulic circuit diagram, and Fig. 4 is a hydraulic circuit diagram.
The figure is a side view of the main part of another example, FIG. 5 is a side view of the main part of another example, FIG. 6 is a plan view thereof, FIG. 7 is a perspective view thereof, and
The figure shows a hydraulic circuit diagram. Symbols in the figure include: 1 is a frame, 2 is a running transmission case, 3 is an engine, 4 is a planted transmission case, 5a, 5b is a chain case 5a, 5b, and 7 is a control handle.

Claims (1)

[Claims] A traveling transmission case 2 is installed on the front side of a frame 1 extending in the front-rear direction.
is mounted, and a planting transmission case 4 is mounted on the rear side of the frame 1, so that the traveling transmission case 2, the frame 1, and the planting transmission case 4 form a substantially concave shape in side view,
The engine 3 is disposed in this concave portion, and the base sides of chain cases 5a and 5b, which have paddy wheels attached to the rear sides on both the left and right sides of the traveling transmission case 2, are pivoted so that the rear sides can be rotated up and down. This walking type rice transplanter is equipped with a transplanting device on the side of a planting transmission case 4, and a base side of a control handle 7 extending rearward and upward is attached to the side of the planting transmission case 4.