JPH0221847Y2 - - Google Patents

Description

[Detailed description of the invention] In the present invention, a link mechanism that connects and supports the ground work device in a manner that it can be raised and lowered is provided at the rear of a traveling body equipped with front and rear wheels, and between this link mechanism and the traveling body, The present invention relates to a riding type work machine equipped with a double-acting cylinder for driving and lowering a ground work device.

With this type of riding-type work machine, it may be necessary to change the tread of the rear wheels depending on the work content or field conditions, or to replace them with wheels of a different diameter. The rear wheels were raised above the ground by manual operation of jacks installed between the traveling aircraft and the ground, but in this case, it was necessary to operate against the large weight of the aircraft, including the ground handling equipment. This resulted in the drawback that it required a great deal of effort and time to jack up the rear wheels.

The purpose of the present invention is to improve the above-mentioned conventional drawbacks by rationally modifying this type of riding-type working machine by utilizing its inherent functions.

The characteristic structure of the riding type working machine according to the present invention, which was made to achieve such an object, is that by changing the maximum operating position on the descending side of the cylinder, the maximum descending position of the ground working device is changed to the ground working position and the rear wheels are set to the ground working position. The point is that a mechanism is provided for switching between the floating position and the floating position.

The functions and effects of the above characteristic configuration are as follows.

<Function> Normally, the maximum lowering position of the ground work equipment is regulated within the ground work range, but if it becomes necessary to change the tread of the rear wheels or replace the wheels, the above mechanism will lower the lowering side of the cylinder. By changing the maximum operating position in , it is possible to raise the rear wheels above the ground with the ground work device that is driven and lowered beyond the above-mentioned ground work range.

<Effects> By utilizing the original function of this type of riding-type work equipment, that is, the driving force of the cylinder provided to raise and lower the ground work equipment, it is possible to reduce the need to change the tread of the rear wheels or replace the wheels. It was possible to do it quickly and easily with little effort.

Hereinafter, embodiments of the configuration of the present invention will be described based on the drawings.

As shown in Figs. 1 and 2, a riding rice transplanter, which is an example of a riding working machine, is equipped with front and rear wheels 1 and 2, and a control handle 3 and a driver's seat 4 arranged on the upper part. A link mechanism 5 consisting of one top link 5A and a pair of left and right lower links 5B, 5B is pivotally connected to the rear of the traveling body A installed so that it can swing vertically. A 6-row seedling planting device (an example of a ground work device) B is connected to the pivotally connected mounting frame 6 so as to be able to roll freely around the front and rear axis, and a bracket fixed to the top link 5A is attached. A double-acting hydraulic cylinder 9 for driving and raising/lowering the seedling planting device B is installed between the seedling planting device 7 and the frame 8 of the traveling body A.

As shown in FIGS. 3 and 4 (a) and (b), by changing the maximum operating position of the hydraulic cylinder 9 on the descending side, the maximum descending position of the seedling planting device B is changed to the planting action position (first position). A mechanism 10 is provided for switching between a position in which the rear wheels 2 are lifted above the ground (see FIGS. 2 and 4B) and a position in which the rear wheels 2 are lifted off the ground (see FIGS. 2 and 4B).

The mechanism 10 includes a regulating member 1 that can be interposed between the bracket 7 and the cylinder tube of the hydraulic cylinder 9, which is pivotably attached to the bracket 7.
0A, and a spring 10B that elastically and stably holds the regulating member 10A in a regulating posture and a regulating posture by swinging beyond the dead center.

In addition, when switching the regulating member 10A to the regulating posture or the regulating posture, this regulating member 1
The seedling planting device B is once driven up to a position where 0A does not come into contact with the cylinder tube of the hydraulic cylinder 9.

The regulating member 10A may be constructed as a detachable type instead of a swingable type.

The seedling tray 11 of the seedling planting device B is provided with rows of seedlings in the horizontal direction so that the seedlings can be stably taken out without missing plants, regardless of variations in the amount of horizontal feed of the seedling tray 11. The pine-shaped seedlings a are placed on the tray.

As a seeding device for producing such pine-shaped seedlings a, it is preferable to use the one shown in FIG.

This seeding device includes a seeding roller 14 that can be freely driven and rotated around an axis along the long side direction of the seedling raising box 12, in the middle of a belt conveyor 13 that places and transports the seedling raising box 12 with its long side facing sideways. A seeding hopper 15 is provided, and the seeding roller 14 has a large number of seeding grooves 1 at appropriate intervals in the direction of its rotational axis.
4a... is formed.

[Brief explanation of the drawing]

The drawings show an embodiment of the riding-type rice transplanter according to the present invention, and Figs. 1 and 2 are overall side views of the riding-on rice transplanter during planting work and when the rear wheels are floating above the ground, and Fig. 3 shows the main parts. 4A and 4B are enlarged side views of the main parts during planting work and when the rear wheels are floating above the ground, and FIG. 5 is a plan view of the seeding device. 1... Front wheel, 2... Rear wheel, 5... Link mechanism, 9... Cylinder, 10... Mechanism, A... Traveling body, B... Ground work device.

Claims (1)

[Claims for Utility Model Registration] A link mechanism 5 that connects and supports the ground work device B in a vertically movable manner is provided at the rear of the traveling body A, which is equipped with front and rear wheels 1 and 2. In a riding type work machine, a double-acting cylinder 9 for driving and lowering the ground work device B is installed between the cylinders 9 and 9.
A riding type working machine is provided with a mechanism 10 for switching the maximum lowering position of the ground working device B between a ground working position and a position where the rear wheels 2 float above the ground by changing the maximum operating position on the lowering side of the vehicle. The riding type work machine according to claim 1, wherein the ground work device B is a seedling planting device.