JPS6112743Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a seedling planting section connected to the rear of the machine body which is provided with a drive wheel at one location in the front and back direction when viewed from the side, and a machine body support on both sides of the seedling planting section. This invention relates to a riding-type rice transplanter equipped with.

Conventionally, in the above rice transplanter, a sled-shaped body support with low mud resistance against lateral movement is provided in order to improve maneuverability when moving the machine forward in the field. When traveling backwards while being backed up, the sled-like body support acts as a large drag on propulsion, increasing the drive reaction force of the wheels and causing problems such as disturbance of the mud surface.

In addition, it is impossible to drive on the road, and in order to drive on the road, separately prepared road wheels must be attached and removed, resulting in a lack of workability and problems in storing the ground wheels.

In view of the above-mentioned circumstances, the present invention solves the above-mentioned drawbacks through extremely simple modification, and furthermore,
The purpose is to enable stable backward running in the field.

Next, embodiments of the present invention will be described in detail based on the drawings.

At the rear of the fuselage 2, a driving wheel 1 is provided at one location in the front-rear direction when viewed from the side and at the center in the left-right direction of the fuselage when viewed from above. A movable seedling planting part 4 is connected to the seedling planting part 4 so as to be relatively rotatable about an axis in the vertical direction, and body supports 5, 5 for stably supporting the body 2 in the left and right directions are connected to the seedling planting part 4. A boarding seat 6 is provided at the rear side of the aircraft body 2, and a control unit 7 is arranged at the front part of the aircraft body 2.
When viewed from the side, it consists of a single-wheeled riding rice transplanter.

The machine body supports 5, 5 are constructed by providing a pair of left and right sled-shaped ground contact members 8, 8 that can be integrally driven and swung about a horizontal axis by a cylinder 9, which is an example of a drive device, and connecting the cylinder 9 to a pump 12 that is interlocked with a fixed rotation shaft 11 protruding from an intermediate transmission case 10 and that supplies lubricating oil in the intermediate transmission case 10 as hydraulic oil,
An arm 13 is connected to the grounding member 8,
One end of a bendable link mechanism 14 is pivotally connected to the seedling planting section 4 at its other end, and arms 16, 16 having ground contact wheels 15 at their rear ends are fixed to a lower link 14a connected to the arm 13. Thus, by switching an operating tool 17 for a valve V connected to the pump 12, the ground contact members 8,
8 and the ground contact wheels 15, 15 are made to contact the ground in a contradictory manner.

In these machine body supports 5, 5, the grounding members 8, 8 are vertically swung on the lower surface side of the left and right floats 3, 3, and are brought into contact with the lower surface of the floats 3, 3, so that the seedling planting section 4 can be swung horizontally. A plurality of seedling planting devices 1 are installed in a position to prevent movement, and their grounding points a, a are
8... are located at substantially the same phase in the longitudinal direction of the machine with respect to the seedling planting point b... of the seedling planting section 4 arranged in parallel in the lateral direction of the machine, and the grounding wheels 15, 1
5 is swingably located inside the left and right floats 3, 3 above the mud surface, and its grounding points c, c are closer to the driving wheels than the grounding points a, a of the grounding members 8, 8. 1 side, and the angle θ between the virtual straight lines connecting the grounding points c, c and the grounding point d of the driving wheel 1 is the angle θ between the grounding points a, a of the grounding members 8, 8 and the grounding point of the driving wheel 1. The angle θ between the imaginary straight lines connecting the is set to be greater than ₁ .

That is, the fuselage supports 5, 5 are composed of grounding members 8, 8 and grounding wheels 15, 15 that move up and down in opposite directions,
Due to the grounding of the grounding members 8, 8, forward running in the field can be performed with good controllability, and the grounding of the grounding wheels 15, 15, the driving reaction force is small and the mud surface is not disturbed. A virtual straight line connecting the grounding point c of the wheels 15 and the grounding point d of the driving wheel 1 when the wheels 15, 15 are in contact with the ground can selectively take a state in which backward running and road running can be performed well. The distance from the center of gravity of the seedling planting part 4 to the center of gravity of the seedling planting part 4 becomes larger than when the grounding point a of the grounding member 8 is used as a reference, and as a result, the moment of overturning diagonally backward when traveling backwards is greatly reduced. Due to the synergistic reduction of the drive reaction force, it is possible to perform the backward movement stably, and in addition, the members 8,
8, the grounding points a, a and the seedling planting point b... are almost in phase, and the center of rotation is located on the extension line, so seedlings can be planted along the S-shaped ridge. The seedlings can be planted at the same spacing as when planting in a straight line.

FIG. 4 shows a first modification of the fuselage supports 5, 5, in which a sled-like grounding member 8 and an arm 16 equipped with wheels 15 are provided with gears G ₁ , G whose diameters are larger toward the grounding member 8 side. ₂ are interlocked and fixed together, and
A cylinder 9 for swinging drive is connected to one of the grounding members 8, so that the grounding member 8 and the wheels 15 are moved up and down oppositely.

FIG. 5 shows a second modification, in which the lower link 14a
A bell crank 19 is connected to the upper link 14b of the bending link mechanism 14 which has a wheel 15 connected thereto, and this bell crank 19 and a cylinder 9 interlocking with the grounding member 8 are pivotally connected via a link 20. The grounding member 8 and the wheels 15 are raised and lowered in opposite directions.

FIG. 6 shows a third modification, in which the upper link 14b of the bending link mechanism 14 with the wheels 15 connected thereto is
It is pivotally connected to an arm 21 integrally connected to the grounding member 8, and a cylinder 9 is connected to the grounding member 8, so that the grounding member 8 and the wheels 15 are moved up and down oppositely.

Incidentally, the grounding member 8 and the grounding wheel 15 may be provided separately so as to be able to touch the ground.

In summary, the present invention provides the aforementioned riding-type rice transplanter in which the body support 5 is connected to a sled-shaped grounding member 8 and a grounding wheel 15 in a side view that can be selectively grounded.
The angle θ between virtual straight lines connecting the grounding points d, c of the driving wheel 1 and the grounding wheels 15, 15 is defined as the grounding points d, a of the driving wheel 1 and the grounding members 8, 8. It is characterized in that the angle θ between the virtual straight lines connecting them is set to be larger than ₁ .

That is, by grounding the sled-like grounding members 8, 8, forward running and turning running in the field can be performed well as before, and the grounding wheels 15, 15 can be selectively switched and grounded. According to
It is now possible to drive not only on the road, but also to drive backwards in the field with a small drive reaction force without disturbing the mud surface.
Due to the synergistic effect of increasing the angle θ at the time of contact with the ground of No. 5 and 15 and the state where the driving reaction force is small,
It has become possible to stably drive backwards in the field, and overall, with simple modifications, it has become possible to achieve the stated purpose.

[Brief explanation of the drawing]

The drawings show an embodiment of the riding-type rice transplanter according to the present invention, and FIG. 1 is an overall side view, FIGS. 2A and 2B are explanatory diagrams showing the grounding member and wheels in a reverse contact state, and FIG. 3 is an illustration of the machine body support. FIG. 4 is a schematic plan view of the device, and FIGS. 4 to 6 are schematic side views showing modified examples of the body support device. DESCRIPTION OF SYMBOLS 1... Drive wheel, 4... Seedling planting part, 5... Airframe support, 8... Grounding member, 9... Drive device, 15
...Grounding wheel, θ, θ ₁ ...Angle, a, c, d...
...Grounding point.

Claims (1)

[Claims for Utility Model Registration] A seedling planting section 4 is connected to the rear of a machine body 2 which is provided with a driving wheel 1 at one location in the front and back direction when viewed from the side, and a machine body is supported on both sides of the seedling planting section 4. Ingredients 5,5
The machine body support 5 is composed of a sled-shaped grounding member 8 and a grounding wheel 15 when viewed from the side that can selectively touch the ground, and the driving wheel 1 and the grounding wheel 15 15,15
The angle θ between the virtual straight lines connecting the grounding points d and c of the drive wheel 1 and the grounding members 8 and 8 is
A riding rice transplanter characterized in that the angle θ between the virtual straight lines connecting the grounding points d and c is set to be larger than ₁ . Utility model registration claim 1, characterized in that the grounding member 8 and the wheels 15 are mounted so that they can be vertically raised and lowered and selectively grounded by a drive device 9 linked to one operating tool. The riding rice transplanter described in .