JPS6317300Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rice transplanter that is provided with running wheels that can be moved up and down and fixed to the machine body, as well as a ground float that prevents rotation of the seedling planting device around the axle.

In the rice transplanter mentioned above, when the depth of the mud layer in the field changes, the amount of sedimentation of the wheels into the mud changes, which causes the drive reaction force of the wheels to change, causing the amount of sedimentation of the ground float to fluctuate. However, the disadvantage is that the seedling planting depth varies.

Therefore, it is possible to suppress the sinking of the seedling planting device by moving the grounding float away from the wheels in the longitudinal direction of the aircraft, but with the type that plants seedlings through the notch on the rear side of the grounding float,
As the soil leveling float moves toward the rear of the body, the leading edge of the notch approaches the seedling planting area, and the planted seedlings may be affected by the water spray from the leading edge of the notch, or they may fall onto the side of the grounding float. There was a drawback that the planting posture was disturbed by the influence of the vortex generated when the mud that had flowed along reached the notch.

The present invention aims to eliminate the above drawbacks.

The characteristic structure of this invention to achieve the above purpose is as follows:
The grounding float is attached to the seedling planting device so as to be movable up and down, and an interlocking mechanism is provided that moves the grounding float up and down with respect to the seedling planting device in the same direction as the wheel up and down in conjunction with the up and down movement of the wheels. This configuration provides the following effects.

In other words, when the seedling planting device sinks due to an increase in the wheel drive reaction force as the wheels descend, the grounding float is pushed downward relative to the seedling planting device, so the seedling planting device will rise relatively, and as a result,
Variations in the seedling planting depth due to the depth of the mud layer, which could not be avoided with conventional rice transplanters, can be easily and reliably suppressed, making it possible to ensure that seedlings are planted at an even more appropriate depth. .

Furthermore, since the grounding float is lowered to suppress variations in the planting depth of seedlings, there is an advantage that it can be applied to a type in which seedlings are planted through the notch on the rear side of the grounding float.

Embodiments of the present invention will be described below with reference to the drawings.

A pair of left and right transmission cases 3 are attached to the fuselage, which is equipped with a driving unit 1 at the front and a control handle ₂ at the rear, so as to be able to swing up and down and be fixed around the axis P1, and to each of these cases 3. Seedling planting consists of a protruding drive axle 5 with wheels 6 for running left and right attached separately, and a seedling platform 7 that is moved back and forth laterally, and a planting claw 8 that takes out the seedlings from the seedling platform 7 and plants them. Devices 7 and 8 are installed at the rear of the machine, and a front grounding float 9 for leveling the mud surface for planting can be vertically swung around its front end, and left and right to prevent rotation of the machine due to its own weight. A pair of rear ground floats 10
are attached to the body of the rice transplanter so as to be able to swing vertically around their rear ends, thereby forming a traveling rice transplanter for planting seedlings while traveling.

As shown in FIG. 2, a fluid pressure cylinder 4 is provided which is automatically expanded and contracted by operating a control valve as the front grounding float 9 moves up and down.
A left and right swinging arm 11 integrally connected to the cylinder 4 is interlocked with the cylinder 4 through separate rods 12, respectively.
When the mud layer in the field becomes deeper and the front float 9 rises, the cylinder 4 is extended and both wheels 6 are lowered relative to the aircraft, and when the mud layer becomes shallower and the front float 9 lowers, the cylinder 4 is extended. is shortened,
Both wheels 6 are configured to be lifted relative to the machine body, so that the seedling planting depth is made constant regardless of the depth of the mud layer.

Further, the support shaft 13, which is the center of swing of the rear grounding float 10, is provided at one end of an L-shaped link 14 attached to the fuselage so as to be swingable around the axis _P2 , and the other end of the L-shaped link 14 is provided at the other end of the L-shaped link 14. and the swinging arm 11 are interlocked and connected by a link 15, so that both the wheels 6
The rear grounding float 10 is raised and lowered relative to the aircraft in the same direction in conjunction with the elevation of the rear grounding float 10 relative to the aircraft, and the buoyancy of the rear grounding float 10 is maintained regardless of fluctuations in the wheel drive reaction force due to changes in the amount of sedimentation of the wheels 6 into the mud. The structure is such that the planting depth of seedlings is made constant due to fluctuations.

Furthermore, the connecting position of the swing arm 11 and the link 15 is configured to be changeable in the longitudinal direction of the arm 11 by selecting the connection hole 16, so that the amount of elevation of the rear ground float 10 relative to the aircraft body relative to the amount of elevation of the wheels 6 relative to the aircraft body is changed. The ratio is configured so that it can be changed and set according to the properties of the muddy soil, and the function of preventing fluctuations in seedling planting depth caused by fluctuations in wheel drive reaction force is exhibited well regardless of the properties of the muddy soil. It is configured so that

Note that the specific configuration for moving the wheels 6 and the ground float 10 up and down in conjunction with each other is as described above, using the link mechanism 14,
Although it is simple to set the number to 15, various other changes are possible, and these are collectively referred to as interlocking mechanisms 14 and 15.

Furthermore, the configuration for changing the ratio of the lifting amount between the wheels 6 and the ground float 10 can be changed in various ways, in addition to selecting the connecting position of the swing arm 11 and the link 15 using the connecting hole 16. It is collectively referred to as the quantity ratio changing mechanism 16.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention.
The figure is an overall side view, and FIG. 2 is an enlarged side view of main parts. 5... Axle, 6... Traveling wheel, 7, 8... Seedling planting device, 10... Grounding float, 14, 15...
...Interlocking mechanism, 16... Lifting amount ratio changing mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] A rice transplanter that is provided with running wheels 6 that can be moved up and down and fixed to the machine body, as well as a ground float 10 that prevents seedling planting devices 7 and 8 from rotating around the axle 5. and the ground float 10
is attached to the seedling planting devices 7 and 8 so as to be movable up and down, and the grounding float 10 is attached to the seedling planting devices 7 and 8 in conjunction with the up and down movement of the wheels 6.
A rice transplanter characterized in that interlocking mechanisms 14 and 15 are provided for raising and lowering the wheels 6 in the same direction as the raising and lowering direction. The rice transplanter according to claim 1, wherein the interlocking mechanisms 14 and 15 are link mechanisms. The rice transplanter according to claim 1 or 2, characterized in that a mechanism 16 is provided for changing the ratio of the lifting amount of the wheels 6 and the grounding float 10.