JPH0432032Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is a forced planting device of a rice transplanter, specifically, it is placed in front of the seedling stand tilted backwards, descends in an arcuate trajectory, and the planting posture is tilted backwards. A seedling pusher is provided with a planting claw, and a seedling pusher is reciprocated with respect to the planting claw between a seedling push-out position and a storage position, and when the planting claw enters the paddy soil, the seedling push-out tool is moved to the seedling push-out position. The present invention relates to a forced planting device in which the seedlings advanced and held by the planting claws at the storage position of the seedling pusher are forcibly pushed out into the soil and planted.

As a rice transplanter, it is equipped with a forced planting device in the planting section.
In order to forcibly plant the seedlings taken out from the seedling stand into the soil of the paddy field using the planting device, and to ensure that the seedlings are planted in the soil of the paddy field without continuously moving the seedlings with the planting claw. There is something I did.

The forcible planting device has a planting arm having a planting claw at the tip supported on the side of the planting mission case, and the planting claw is moved vertically in a predetermined rotational trajectory via the arm. During the downward stroke of this rotating trajectory, the planting claws cut and hold the seedlings on the seedling stand to plant them in the soil of the paddy field. The extruder is provided to reciprocate between a push-out position and a storage position, and at the storage position of the push-out tool, the planting claws cut and hold the seedlings on the seedling stand, and the planting claws move the seedlings into the paddy soil. At the time of planting, the pushing tool pushes out the seedlings toward the tips of the planting claws so that the seedlings are forcibly planted into the paddy soil.

By the way, the seedling platform is usually attached to the aircraft body in a backward tilted position with the upper part inclined backward in the direction of travel, and a seedling extraction port by the planting claw is provided at the lower front end of the seedling platform, and the seedlings are not inserted into this extraction port. The seedlings on the platform are fed by their own weight, and the planting claws are moved along an arcuate trajectory that curves toward the rear in the direction of movement of the machine in order to intersect the extraction port during the downward stroke. Advance the planting claw toward the rear side of the seedling platform from the upper end position of the arcuate trajectory, and when it intersects the take-out port, position the seedling pusher in the storage position, take out the seedlings from the take-out port with the planting claw, and remove the seedlings. After taking out the seedlings, the seedlings are moved to the lower front side of the seedling stand, and the seedlings are pushed out by the seedling pusher at the lower end position of the circular arc trajectory, and are planted in the soil of the paddy field.

Therefore, when the planting claw reaches the lower end position of the arcuate trajectory, that is, the position for planting seedlings into the paddy soil, the planting claw assumes a backward tilted position, and in this state, the planting claw Since the held seedlings are pushed out by the pusher, the seedlings are planted in the paddy soil in a backward-leaning position.

By the way, when seedlings are planted in a backward leaning position as described above, there are problems such as not only the appearance of the planted seedlings being poor but also having an adverse effect on the growth of the seedlings.

This invention was devised in view of the above-mentioned problems, and its purpose is to use the resistance of the mud that acts on the roots of the seedlings at the time of planting to make the planting posture of the seedlings upright using the planting claws. The purpose of this invention is to improve the appearance of the seedlings when planted in paddy soil, and to ensure smooth and good growth of the seedlings.

Therefore, the configuration of the present invention is provided with a planting claw 8 which is arranged in front of the seedling stand in a backward-tilting position, descends in an arcuate trajectory A, and whose planting position is in a backward-tilting position. 8, the seedling pusher 9 is reciprocated between the seedling push-out position and the storage position, and the planting claw 8
When entering the paddy soil, the seedlings are advanced to a seedling pushing position and held by the planting claws 8 at the storage position of the seedling pushing tool 9, and the seedlings are forcibly pushed out into the soil and planted. In the forced planting device of the machine, at the tip of the seedling pusher 9, on the opposite side of the planting claw 8, a seedling receiving surface 9b is provided in a direction perpendicular to the length direction of the planting claw 8; On the planting nail 8 side, an inclined surface 9a that slopes in a direction away from the tip of the planting nail 8 as it approaches the planting nail 8.
is provided, while the planting nail 8 is removed from the seedling pusher 9.
The length ( ) to the tip of the seedling is set to be approximately 1/2 of the height of the root b of the seedling to be cut and held by the planting claw 8 .

DESCRIPTION OF THE PREFERRED EMBODIMENTS A forced planting device for a rice transplanter according to the present invention will be described below with reference to embodiments shown in the drawings.

The drawing shows a walk-behind rice transplanter, in which drive wheels 3 are supported on both sides in the width direction at the bottom of the machine body 1 so as to be able to swing up and down through swing chain cases 2, and a plurality of floats 4 are provided at the bottom of the machine body 1. In addition, a forced planting device 5 is provided at the rear of the machine body 1, and a steering handle 6 extending rearward and upward is provided at the rear of the planting device 5 to drive and rotate the wheels 3 during seedling planting work. While the handle 6
The machine 1 is steered by the forced planting device 5, and the seedlings a are taken out from the lower end outlet 7a of the seedling stand 7 provided in a backward tilted position at the rear of the planting device 5, and placed in the soil of the paddy field. We are trying to forcefully plant them.

The forced planting device 5 includes a planting claw 8 and a seedling pusher 9, and moves the planting claw 8 up and down on the side of the planting mission case 10 via a planting arm 11 in a predetermined rotation trajectory. During the descending stroke of the planting claw 8, the planting claw 8 traces an arcuate locus A that curves backward in the direction of movement of the machine, and along the way, the planting claw 8 connects with the take-out port 7a of the seedling platform 7. The planting claws 8 are moved rearward and downward toward the seedling stand 7 side from the upper end position of this arcuate trajectory A, and the planting claws 8 are moved to intersect with each other.
a, the planting claws 8 cut and hold the seedlings a on the seedling platform 8, and after holding the seedlings a, the planting claws 8 are moved to the lower front of the seedling platform 7 and the circular arc The planting claw 8 is tilted backward at the lower end position of the trajectory A, and the seedling a held by the planting claw 8 is to be planted in the soil of the paddy field.

Further, the planting arm 11 supports a bush rod 12 so as to be able to move forward and backward relative to the planting claw 8, and the push-out tool 9 is attached to the tip of the rod 12. The extrusion tool 9 is capable of reciprocating between the inner storage position of the attached claw 8 and the tip pushing position of the planting claw 8.
is placed in the storage position to cut and hold the seedlings a with the planting claws 8, and when planting the seedlings a into the soil of the paddy field, the pushing tool 9 is advanced to the seedling pushing position and the planting claws 8 are used to cut and hold the seedlings a. The retained seedlings a are forcibly planted in paddy soil.

In the forcible planting device 5, the block-shaped root b of the seedling a, which is cut and held by the planting claw 8, protrudes from the toe of the planting claw 8, and The design allows the user to adjust his/her posture while sitting in the soil of a paddy field.

Specifically, the storage position of the seedling pushing tool 9, that is, the length l between the pushing tool 9 and the tip of the planting claw 8.
When the seedling a is held by the planting claw 8 with a length of about 1/2 of the height h of the block-shaped root part b of the seedling a, a part of the root part b extends from the tip of the planting claw 8. When the planting claw 8 plunges into the soil of the paddy field, the attitude of the root b becomes vertical due to the ground resistance from the direction opposite to the root b as the body 1 advances. The plant was modified so that seedlings a were planted in an upright position.

Further, the pushing tool 9 is provided with a seedling receiving surface 9b in a direction perpendicular to the length direction of the planting claw 8 on the opposite side of the planting claw 8 at the tip of the pushing tool 9, An inclined surface 9a is formed on the side of the planting claw 8, which slopes away from the tip of the planting claw 8 as it approaches the planting claw 8.
When cutting and holding the seedling a, the root part b of the seedling a and the inclined surface 9a of the pushing tool 9
A gap is formed between the seedling a and the root part of the seedling a held by the planting claws 8, and as a result, the contact surface between the root part b and the seedling receiving surface 9b can be reduced,
Therefore, when planting in paddy soil, the distance of the root part b from the seedling receiving surface 9b can be improved. Therefore, when the seedling a is corrected to a vertical position due to the ground resistance when the root part b touches the ground, this correction operation is carried out by the seedling receiving surface 9b.
Therefore, the posture of the seedling a can be easily and reliably corrected to an upright posture.

The forced planting device 5 shown in the drawing includes a planting arm 11
A planting claw 8 is attached to the tip of the planting arm 11.
The other end of the planting arm 13 is rotatably supported via a connecting link 14 by a support arm 13 that projects from the mission case 10, and an intermediate position of the planting arm 11 projects outward from the mission case 10. The drive shaft 15 is connected to the drive link 16, and the rotation of the drive shaft 15 causes the planting arm 11, that is, the planting claw 8, to move vertically in a predetermined rotational trajectory via the drive link 16 and the connection link 14. I'm trying to make it move back and forth.

Further, the planting arm 11 supports a push rod 12 having the seedling pusher 9 attached to its tip so as to be able to move back and forth. The push lever 17 and the push rod 12 are connected to each other via an engagement tool 19, and on the connection shaft 20 between the arm 11 and the drive link 16 inside the planting arm 11, A rotary cam 21 is installed internally to rotate in conjunction with the drive shaft 15, while an end surface of the push lever 17 opposite to the engagement tool 19 is brought into contact with the cam 21, and the lever 17 and the planting arm A spring 22 is interposed between the lever 17 and the inner wall of the lever 11 to constantly bias the lever 17 clockwise in order to push the push rod 12 outward.

When the lower cam surface 21a of the cam 21 comes into contact with the push lever 17, the lever 17 is swung clockwise by the spring 22, and the seedling pusher 9 is planted via the push rod 12. Move the tip of the claw 8 forward to the pushing position,
Further, after planting the seedling a in the paddy soil using the planting claw 8, the lever 17 is brought into contact with the high cam surface 21b of the cam 21, and the lever 17 is moved counterclockwise against the spring 22. The rod 12, that is, the seedling pusher 9 is moved back to the retracted position inside the planting claw 8.

The present invention is constructed as described above, and during seedling planting work using a rice transplanter, the planting claws 8 are reciprocated in the vertical direction along a predetermined rotational trajectory, and during the downward stroke of the planting claws 8, the planting claws 8 are Draw an arcuate locus A as shown in the imaginary line in FIG. When passing, the seedling pusher 9 is retracted to the inner storage position of the planting claw 8, and the seedling a is cut and held by the planting claw 8. After that, the planting claw 8 is moved to the seedling platform 7. When it is moved downward and forward and reaches the lower end position of the arcuate trajectory A,
The planting claw 8 is thrust backward into the paddy soil, and at this time, the pushing tool 9 is advanced to the tip pushing position of the planting claw 8, and the seedling a held by the planting claw 8 is pushed into the paddy soil. planted inside.

However, when the seedling a is planted into the paddy soil by the planting claw 8, the planting claw 8 is tilted backward, so that the seedling a held by the planting claw 8 is also placed in the paddy soil. As shown in the imaginary line in Figure 4, the seedling is tilted backwards, but the storage position of the pusher 9 with respect to the planting claw 8 is set so that a part of the root b of the seedling a protrudes beyond the planting claw 8. , when the seedling a is cut and held by the planting claw 8, a part of its root b is made to protrude beyond the planting claw 8 as shown in FIG.
Therefore, when planting seedlings a into the soil of a paddy field, a part of the root part b protruding toward the tip of the planting claw 8 receives ground resistance from the direction B as the aircraft advances, and the part of the root part b projects as shown by the solid line in Fig. 4. As shown, the posture is corrected vertically, but at this time, the seedling receiving surface 9b and the inclined surface 9a are provided at the tip of the seedling pushing tool 9, so that the seedling receiving surface 9b and the root part b can be made small, and therefore, the distance of the root part b from the seedling receiving surface 9b can be improved, and as a result, the root part b receives ground resistance and becomes vertical. When attempting to correct the seedling a, the corrective action is not resisted and obstructed by the seedling receiving surface 9b, and the posture of the seedling a can be easily and reliably corrected to an upright posture. is planted in an upright position.

As explained above, according to the present invention, the planting claw 8 is arranged in front of the seedling stand in a backward-tilting position, descends in an arcuate trajectory A, and has the planting device in a rearward-tilting position. The seedling pusher 9 is reciprocated with respect to the attachment claw 8 between a seedling push-out position and a storage position, and when the planting claw 8 enters the paddy soil, it is advanced to the seedling push-out position and the seedling is removed. In a forced planting device of a rice transplanter, in which the seedlings held by the planting claw 8 at the storage position of the pushing tool 9 are forcibly pushed out into the soil and planted, at the tip of the seedling pushing tool 9,
A seedling receiving surface 9b in a direction perpendicular to the length direction of the planting claw 8 is provided on the opposite side of the planting claw 8, and
On the side of the planting claw 8, an inclined surface 9a is provided which slopes away from the tip of the planting claw 8 as it approaches the planting claw 8. The length l is about 1/2 of the height of the root b of the seedling to be cut and held using the planting claw 8.
As for the length, when the seedlings are planted into the paddy soil using the planting claws, the attitude of the seedlings is corrected vertically due to the ground resistance against the roots as the aircraft advances. Furthermore, by providing the seedling receiving surface and the inclined surface at the tip of the seedling pushing tool, the contact surface between the seedling receiving surface and the root can be made small, and therefore the seedling receiving surface of the root can be reduced. In addition to being able to maintain a good distance from the surface, the inclined surface also allows a gap to be formed between the roots of the seedlings, and the posture of the seedlings is corrected to a vertical position by the action of ground resistance when the roots touch the ground. when the seedling receiving surface resists and inhibits this corrective action, it is easy to
Moreover, it is possible to reliably correct the seedling to an upright posture. Therefore, the seedlings can be planted in the paddy soil in an upright position, the appearance of the planted seedlings is good, and the seedlings can grow smoothly and well.

[Brief explanation of the drawing]

Figure 1 is a side view of a rice transplanter that implements the forced planting device of the present invention, Figure 2 is an enlarged partially cutaway side view of the forced planting device, and Figures 3 and 4 are the operating states of the planting claws. FIG. 8... Planting claw, 9... Seedling pusher, a...
Seedling, b...root.

Claims (1)

[Scope of utility model registration request] A planting claw 8 is disposed in front of the seedling stand tilted backward, descends in an arcuate trajectory A, and has a planting posture tilted backward, and a seedling pushing device 9 is provided with respect to the planting claw 8.
is reciprocated between a seedling push-out position and a storage position, and when the planting claw 8 enters the paddy soil, the seedling push-out tool 9 is advanced to the seedling push-out position.
This is a forced planting device for a rice transplanter in which the seedlings held by the planting claw 8 at the storage position are forcibly pushed out into the soil and planted. A seedling receiving surface 9b is provided on the opposite side of the planting claw 8 in a direction perpendicular to the length direction of the planting claw 8, and a seedling receiving surface 9b is provided on the side of the planting claw 8 as it approaches the planting claw 8. 8 is provided, and the length from the seedling pusher 9 to the tip of the planting claw 8 is l,
A forced planting device for a rice transplanter, characterized in that the length is approximately 1/2 of the height of the root portion b of the seedling cut and held by the planting claws 8.