JPS6332576Y2 - - Google Patents

Description

[Detailed description of the invention] This invention consists of a uniaxial propulsion wheel placed at or near the center in the width direction of the fuselage at one location in the longitudinal direction when viewed from the side, and a planting device side placed at the rear of the uniaxial propulsion wheel. The present invention relates to a riding rice transplanter that is configured to support the machine body on the ground using a grounding float and travel for planting.

This type of riding rice transplanter uses the grounding float originally installed in the planting device as one of the ground support members in the longitudinal direction of the machine.
While the overall structure of the machine is simpler and lighter than conventional tractor-type riding rice transplanters, it also features a uniaxial propulsion wheel and a ground float that swings up and down as the depth of the tiller changes. Since the machine is supported on the ground by a chisel, the machine's stability in the left and right direction is poor in fields where the plowing surface is rough in both the left and right directions, and the machine is particularly unstable when turning or changing direction. If the clutch were to be disengaged and activated, there was a risk that the aircraft would tilt left or right and throw the driver off, or that the aircraft would topple over.

In view of the above-mentioned circumstances, the purpose of this invention is to keep the tilt of the aircraft in the left and right directions during turns and direction changes within a certain range, so that safe planting can be carried out at all times. In the above-mentioned machine, a pair of left and right auxiliary grounding tools are provided on the left and right sides of the propulsion wheel, each having a plow ground contact portion located above the ground contact point of the propulsion wheel when viewed from the side of the aircraft. It is characterized by

That is, in the case of the present invention, when the aircraft tilts beyond a certain level in the left-right direction, the plowing ground contact portions of the auxiliary grounding devices provided on the left and right sides of the propulsion wheels are brought into contact with the ground, and the entire auxiliary grounding device is fully tensioned. The supporting action can reliably prevent further tilting of the aircraft, so as mentioned above, the aircraft can be supported on the ground by the uniaxial propulsion wheels and the ground float at the rear when planting. Although it has a simple configuration, even in fields where the plowing surface is rough in both the left and right directions of the machine, it is possible to maintain safe planting operation at all times by keeping the left and right tilting of the machine during turns and direction changes within a safe range. I was able to get it done.

Hereinafter, an embodiment of the present invention will be explained based on the drawings. In the drawing, 1 indicates one propulsion wheel 2 at one place in the front and back direction when viewed from the side, and one propulsion wheel 2 at the center in the width direction of the fuselage.
At the same time, a pipe frame 5 which also serves as a transmission case is extended rearward from the transmission case 4 linked to the engine 3, and this pipe frame 5
A pair of left and right support cases 6, 6, which support the propulsion wheel 2 on both sides, are installed in the middle of the drive wheel 2 so as to be freely steerable and rotatable about the vertical axis _P1 passing through the axle 2A axis of the propulsion wheel 2. The main body of the traveling machine includes a seedling stand 8 tilted backwards, planting claws 9..., a planting transmission case 10 in which these drive mechanisms are housed, and the propulsion wheels 2 to move the machine to the ground. A planting device for four-row planting consisting of three ground floats 11 having a supporting function and a planting surface leveling function, and a planting transmission case 1 of this planting device 7 .
0 is connected to the rear end of the pipe frame 5 on the traveling machine main body 1 side.

Further, a pair of left and right sled-shaped auxiliary grounding tools 12 having plow grounding portions 12a, 12a located above the grounding point of the propulsion wheel 2 in a side view of the vehicle are provided on the left and right sides of the propulsion wheel 2, 12 is the frame 1 on the engine 3 and transmission case 4 side.
The auxiliary grounding tools 12, ₁₂ have plow grounding parts 12a, 12a similar to or almost the outer peripheral part of the propulsion wheel 2. The auxiliary earthing devices 12, 12 are formed into similar circular arcs, and the mounting base end portions 12b, 12b of the auxiliary earthing devices 12, 12 are formed with circular arc-shaped elongated holes 14, 14 around the swing axis _P2 . Bolts 15, 15 projecting outward through the elongated holes 14, and nuts 16, 16 screwed into the projecting ends of the bolts are provided on the side of the frame 13 corresponding to the auxiliary grounding. The tools 12, 12 are configured to be height adjustable and fixed relative to the propulsion wheel 2 within the range of the elongated holes 14, 14.

Moreover, the pipe frame 5 on the side of the traveling machine main body 1
includes a control handle 17 for the propulsion wheel 2;
and the driver's seat 18, as well as the ground float 11...
A pair of left and right sled bodies 19, 19 for sliding contact with the tiller plate, which can swing up and down with respect to the ground float 11, are provided on both left and right lateral outer sides of the ground float 11, and the sled bodies 19, 19
A drive cylinder 21 is interposed between the pipe frame 5 and a common swing fulcrum shaft 20 that connects the front ends.

The drive cylinder 21 is in a state where it is expanded and contracted based on human operation, and the ground float 11...
It is configured such that it can be switched to a state in which it is extended or contracted based on the vertical swinging displacement of one of them.

When the aircraft turns, the sled bodies 19, 19 are lowered by manual operation until the ground floats 11 float above the ground, thereby making it possible to avoid mud being pushed out on the sides of the ground floats 11. In addition, in the case of a soft and deep field, switching to the automatic control state not only suppresses the rolling of the planting device 7 but also reduces the grounding of the grounding float 11. The planting depth can be stabilized by keeping the pressure almost constant.

In addition, the auxiliary earthing tools 12, 12 and the sled body 19,
19 is provided in the state of straddling two rows and four rows.

[Brief explanation of the drawing]

The drawings show an embodiment of the riding rice transplanter according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view, and Fig. 3 is a top view.
The figure is a front view of the main parts. 2... Propulsion wheel, 7 ... Planting device, 11...
Grounding float, 12... Auxiliary grounding device, 12a...
Plowing plate grounding part.

Claims (1)

[Scope of utility model registration request] The aircraft is grounded by a uniaxial propulsion wheel 2 placed at or near the center in the width direction of the aircraft and a grounding float 11 on the planting device 7 side placed behind it at one location in the front-rear direction when viewed from the side. In a riding rice transplanter that is configured to support and drive planting, a plow ground contact portion 12a located on both left and right sides of the propulsion wheel 2, which is located above the ground contact point of the propulsion wheel 2 when viewed from the side of the machine body; This riding rice transplanter is provided with a pair of left and right auxiliary earthing tools 12, 12.