JPS599557Y2 - rice transplanter - Google Patents

Description

[Detailed explanation of the invention] This invention has a seedling stand tilted backwards at the front side of the machine.
A planting arm that circulates in the vertical direction by a lever crank mechanism is provided, and a planting claw is attached to the planting arm so as to be swingable around a horizontal axis, and is linked to the crankshaft of the lever crank mechanism. The machine automatically moves the planting claw toward the planting arm at the bottom of its circulation trajectory by using a cam body installed in the machine and a cam floor installed at the base end of the planting claw to follow the cam body. The present invention relates to a rice transplanter configured to swing rearward.

Conventionally, in order to rotationally drive the planting claw, as shown in FIG.
It is located at the rear of the aircraft compared to No. 2, and when the aircraft is moving during planting, the aircraft moves in the direction of movement with the planting claws entering the mud surface, as shown by the two-dot chain line in Figure 1. There was a problem in that the large displacement caused muddy soil to be scraped up during planting, making planting unstable and prone to floating seedlings.

In view of the above points, the present invention enables seedling planting with less muddy soil scraping, and also simplifies the structure for pushing out the seedling pusher against the planting claw, making it easy to correct manufacturing errors. The aim is to make it possible.

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

The wheels 1 are attached to be able to move up and down, and the float 2 is suspended and supported, and at the rear of the running machine there is a seedling stand 3 tilted backwards, and one block of seedlings is taken out from the seedling stand 3 and placed in the rice field. A walking-type rice-planting machine is provided with a planting device 4 for planting seedlings so as to continuously plant seedlings in the rice field as it travels.

The planting device 4 is constituted by a crankshaft 6, a swing link 6A, a planting arm 8, a planting claw 9, and a seedling pusher 10, and the rear end of the planting arm 8 is connected through the swing link 6A. It is pivotally connected to the planting case 5 so as to be able to swing freely, and the intermediate portion thereof is driven by a so-called lever crank mechanism which is interlocked and connected to the planting mission 7 via the crankshaft 6. 6 and the swing motion of the link 6A, the planting claw 9 rotates cyclically from the lower part of the seedling platform 3 to the planting mud surface, and also rotates the planting claw 9 from the lower part of the seedling platform 3 to the planting mud surface. Nearby, the seedling pusher 10 is moved back and forth to the planting claw 9, and the planting claw 9
The structure is such that block seedlings held in the container are pushed out into the mud surface and planted.

The planting claw 9 has a substantially U-shaped cross section when viewed from the side, and the front end sides of the left and right side walls 9a, 9a are connected by a front wall 9b. front wall 9
A slit through which the seedling pusher 10 passes is formed above the bent part b.

Then, the rear side walls 9a, 9a of the planting claw 9 are attached to a swinging lever 12 which is pivotally connected to the planting arm 8 so as to be swingable around the horizontal axis a, and integrally connected to the swinging lever 12. A rod 15 is interposed between the cam floor 13 and a cam body 14 connected to the crankshaft 6, using the planting arm 8 as a guide and in contact with each other.

The seedling pusher 10 is inserted into the inner space of the U-shaped cross section on the tip side by passing its tip side through the slit in the upper part of the front wall 9b of the planting claw 9, and then are pivotally connected via a horizontal shaft b provided on the tip side of the planting arm 8 rather than the horizontal shaft a of the planting claw 9, and this seedling pusher 1
A rod 17 is interposed between the cam floor 16 integrally connected to the cam floor 16 and the cam floor 13 for the planting claw 9 with the planting arm 8 as a guide and in contact with each other,
A coil spring 18, which is an example of a bullet, is installed in the planting arm 8 and acts on the cam floor 16, and as the cam body 14 rotates due to the rotation of the planting arm 8, the spring is activated. With a biasing force of 18, the planting claw 9 is placed near the bottom of its circulation trajectory, and the planting arm 8
In order to reduce as much as possible the machine body and the planting tree tops 9 are displaced relative to each other in the planting driving state, and the mud is scraped up as much as possible when the machine body is in the planting mud surface. The movement mechanism 19 is configured, and as the planting claw 9 swings relative to the planting arm 8, the seedling pusher 10 is reciprocated along the longitudinal direction of the planting claw 9. The structure is such that block seedlings held in the container are pushed out into the mud surface and planted.

In the above embodiment, the seedling pusher 10 is swung to follow the planting claws 9, and is also swung within the planting arm 8 against the biasing force of the spring 18 in order to reciprocate along the longitudinal direction. This is done via a rod 17 that is provided in contact with both the seedling pushing tool 10 and the planting claw 9, and can be assembled by simply installing it into the planting arm 8 without providing any special connector. It is extremely advantageous in terms of assembly, and the rod 1
Error correction can be easily done by replacing 7.

In summary, the present invention provides the above-mentioned rice transplanter that is capable of swinging freely around another horizontal axis that is located at a different position on the tip side of the planting arm than the horizontal axis that serves as the swinging fulcrum of the planting claw. A seedling extrusion tool is provided, and a cam floor different from the cam floor on the planting claw side is provided at the base end of the seedling extrusion tool,
A pressing member is interposed between the cam floor on the side of the seedling extrusion tool and the cam floor on the side of the planting claw, and a bullet having a pressing force toward the cam body is inserted on the side of the seedling extrusion tool. By placing the tip of the seedling extrusion device against the cam floor of the device so that the biasing force of the bullet and the acting force of the cam body act on both cam floors, the tip of the seedling extrusion device is moved to the lower part of the circulation trajectory. While maintaining the state in which the tip of the planting claw moves toward the rear of the machine against the back surface in the moving direction, as the planting claw moves backward with respect to the planting arm, the tip of the seedling pusher is moved relative to the planting claw. It is characterized in that it is configured to push out the seedlings by changing its position.

In other words, since the planting claws 9 are swung toward the rear of the machine body at the bottom of the circulation trajectory where the planting claws 9 plunge into the planting mud surface, it is possible to reduce the amount of mud being scraped in due to relative displacement with the machine running. We were able to achieve stable planting and suppress the occurrence of floating seedlings.

Moreover, although the connection between the planting claw 9 and the seedling pusher 10 employs a contact structure using the pressing member 17, it is possible to eliminate the need for a connecting pin, etc., which is required when linking the planting claw 9 and the seedling pusher 10. The structure for making the extraction tool 10 swing to follow the planting claw 9 and perform the extrusion operation has been made simple with fewer parts and is advantageous for assembly, and even if there are manufacturing errors, these errors can be corrected during assembly. I was able to make it easier to fix over time.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the rice transplanter according to the present invention, and the first
The figure is an overall side view, Figure 2 is a partially cutaway enlarged side view of the main part,
FIG. 3 is a partially cutaway view taken along the line III--III in FIG. 2. 3... Seedling stand, 6... Crankshaft, 8... Planting arm, 9... Planting claw, 10... Seedling pushing tool, 13.
16...Cam floor, 14...Cam body, 17...
- Pressing member, 18... Bullet machine, 19... Swing mechanism.

Claims (1)

[Scope of utility model registration request] A planting arm 8 that circulates in the vertical direction by a lever crank mechanism is disposed at the front side of the machine body of the seedling stand 3 in a rearward tilted position, and the planting claw 9 is moved along the horizontal axis a with respect to the planting arm 8. A cam body 14 is attached so as to be able to swing around the lever, and is connected to the crankshaft 6 of the lever crank mechanism, and a cam floor is provided at the base end of the planting claw 9 so as to follow the cam body 14. 13, in a rice transplanter that is configured to automatically swing the planting claw 9 toward the rear of the machine relative to the planting arm 8 at the lower part of its circulation locus, the swinging of the planting claw 9 A seedling pusher 10 is provided on the distal end side of the planting arm 8 than the horizontal axis a, which serves as a fulcrum, and is swingable around another shaft b positioned at a different position. A cam floor different from the cam floor 13 on the side of the planting claw 9
16 is provided, and a pressing member 17 is interposed between the cam floor 16 on the side of the seedling pusher 10 and the cam floor 13 on the side of the planting claw 9, and further pressurized toward the cam body 14 side. A bullet 18 having a force is brought into contact with the cam floor 16 on the side of the seedling pusher 10, and the biasing force of the bullet 18 and the acting force of the cam body 14 are applied to both cam floors 13.16.
By arranging the seedling pushing tool 10 to act together with the seedling extruder 10, the tip of the seedling pusher 10 is brought into contact with the back surface of the tip of the planting claw 9, which moves toward the rear of the machine at the bottom of the circulation trajectory. It is characterized in that the seedlings are pushed out by changing the relative position of the tip of the seedling pusher 10 with respect to the planting claw 9 as the planting claw 9 moves backward with respect to the planting arm 8 while maintaining . A rice transplanter.