JPS6341848Y2 - - Google Patents

Description

[Detailed description of the invention] This invention moves a pair of left and right soil gathering tools up and down in conjunction with the planting operation of a planting device that has planting claws that circulate up and down.
The present invention relates to a rice transplanter configured to backfill grooves formed in the mud surface with the planting nails from both left and right sides.

In such a rice transplanter, since it is possible to backfill the grooves that cause planted seedlings to topple over, it is especially important to arrange the planting device so that the planting claws are located at the front of the seedling stand that is tilted backwards. Mechanically, it is necessary to circulate the planting nails so as not to form grooves.
It is extremely useful as a difficult rice transplanter, and moreover,
Since the earth-harvesting tool moves up and down in conjunction with the planting operation, compared to a device that constantly drags and moves the earth-harvesting tool while it is in the mud surface, roughening of the mud surface due to back-filling action is avoided as much as possible for effective planting. It has the advantage of being able to perform

In this way, backfilling the trench dug by the planting claw is effective for seedlings to take root and grow, and for this purpose, using an earth-harvesting tool that is linked to the drive of the planting claw is effective in transmitting the driving force to the earth-harvesting tool. This is an effective means for simplifying the structure.

The above-mentioned backfilling has practical value only if it is carried out reliably, but in order to ensure the backfilling, it is common to transport a large amount of mud into the trench.
To this end, it is effective to move the mud retaining part of the earth-harvesting tool laterally in the mud in the width direction of the aircraft, but if such a large amount of mud is moved laterally, the already planted seedlings may be damaged by mud waves. If there is a risk of the mud being pushed over, and if a large number of mulch tools are installed, the drive structure for horizontally moving the mud retaining parts of each of the mulch tools becomes extremely complex, making it difficult to transmit the driving force. Even if the structure is simplified, there is a problem that the structure as a whole becomes complicated.

However, the plate shape of the mud holding part of the mulching tool is made to be inclined with respect to the plane drawn by the rocking trajectory of the mulching tool, and the mulching tool is simply swung up and down within a vertical plane parallel to the direction of movement of the aircraft. With this configuration, it is not possible to collect a sufficient amount of mud unless the mud pushing action area is made considerably large and the mud retaining section is buried deep in the mud. As a result, only a small amount of mud can contribute to backfilling, resulting in the problem that backfilling is difficult to perform reliably.

Therefore, the present invention changes the viewpoint of backfilling and devises the structure and arrangement of the earth-filling tool so that it can exert an effective backfilling effect with a small amount of mud, thereby reducing the negative effects caused by large mud waves. The purpose is to avoid complication of the mulching tool drive structure.

The characteristic configuration of the present invention for achieving the above object is that a pair of left and right soil gathering tools for each planting claw is moved up and down in conjunction with the planting operation of a planting device equipped with multiple pairs of planting claws that circulate up and down. In a rice transplanter configured to backfill the grooves formed in the mud surface by the planting claws from both left and right sides by reciprocating the planting claws, each of the soil gathering tools is extended in the width direction of the machine body. The structure is such that it is attached to a single shaft and is moved reciprocally by vertically swinging around the shaft, and the mud retaining portion of each of the earth mulching tools is configured to hold mud in a mulching action state during downward movement. forming a surface that presses toward the front and side, and
The mud retainer is positioned and arranged so that it overlaps the upward movement side circulation trajectory of the planting nail in the above-mentioned soil bundling action state where it is located on the mud surface during downward movement. This configuration provides the following effects.

In other words, instead of forcibly moving the mud retaining part of the earth-filling tool in the width direction of the aircraft to transport a large amount of mud,
First, the shape of the surface of the mud holding part of the mulching tool is such that it not only has the function of simply pushing mud laterally, but also has the function of pushing mud forward by utilizing the forward motion of the aircraft. In addition, in addition to this, the mud holding part overlaps with the upward trajectory of the planting claw when viewed from the side, that is, it performs a backfilling action in the immediate vicinity of the seedlings planted by the planting claw. Due to the synergistic effect of devising the placement in relation to the planting nails, the amount of mud carried by the mulching tool itself is at least as large as that of a structure in which the mud holding part of the mulching tool is moved laterally. , it has been possible to carry out sufficiently effective backfilling, thereby minimizing the occurrence of mud waves caused by the movement of large amounts of mud, and achieving backfilling that avoids as much as possible the inconvenience of pushing down the already planted seedlings. It can be done.

As mentioned above, by adopting a configuration that does not require lateral movement of the mud pusher, each of the soil removal tools can be mounted on a single shaft, which is extremely simple mechanically. With a structure in which the earth mulching tool only swings up and down on a concentric axis, the earth mulching tool can be constructed with a sufficient backfilling function.

An embodiment of the present invention will be described below based on the drawings. A driving unit 2 and a central ground leveling float 3 are disposed in front of a pair of left and right running wheels 1, 1, and
At the rear of the running wheels 1, 1, there is a seedling stand 4 in a rearward tilted position that can be moved in a reciprocating manner in the lateral direction. A four-row planting device 6 having a group of claws 5 for taking out the seedlings on the seedling platform 4 in unit quantities and planting them on the mud surface a is positioned in front of the seedling platform 4. In the walk-behind rice transplanter, which is arranged so as to move, and is provided with a control handle 7 extending rearward and soil leveling floats 8, 8 on both sides, in conjunction with the planting operation of the planting device 6,
A mechanism 9 is provided for backfilling the grooves b formed in the mud surface a by the planting nails 5.

The backfilling mechanism 9 swings downward around a horizontal axis X located slightly behind the lower part of the crankshaft 10 that collectively drives the planting claws 5... groups, thereby cleaning the mud surface. A plurality of pairs of left and right soil gathering tools 11, 11 each having a mud pressing portion 11A that enters into groove a and presses the mud on both sides of groove b toward groove b side are provided corresponding to each planting nail 5, and Each time the pawl driving crankshaft 10 rotates once through a single shaft 12 that supports the tools 11, 11, etc. so as to swing up and down all at once, and a cam 13 attached to the pawl driving crankshaft 10, That is, the planting claw 5 is configured to include a linking rod 14 that swings the shaft 12 back and forth once every time the planting claw 5 operates one cycle.

The working surface portion of the mud presser portion 11A of the earth bulging tools 11, 11 that presses the mud is the earth bulging tools 11, 11.
It is formed into an inclined surface that is located more inwardly toward the rear and more inwardly toward the top so as to press the mud toward the front and sides when descending.

In addition, the backfilling mechanism 9 can change the posture of the cam 13 around the crankshaft center with respect to the pawl driving crankshaft 10 and can fix it.
At the same time, the earth gathering tools 11, 11...
is attached to the shaft 12 so that its posture around the horizontal axis X and its position in the axial direction can be changed and fixed, and by changing the posture of the cam 13 around the pawl driving crank shaft, the planting pawls 5... Adjusting the start time of backfilling operation for circulation operation,
By changing the posture around the axis of the earth mulching tools 11, 11..., the vertical reciprocating swing range of the earth mulching tools 11, 11..., that is, the amount of mud pushing toward the groove b... side, is adjusted, and the earth mulching tools 11, 1...
By changing the axial center position of 1..., the lateral action position of the mulching tools 11, 11... with respect to the groove b... can be adjusted.

The shaft 12 is supported by a stay 17 that projects rearward from a pivot bracket 16 of a swing link 15 that regulates the posture of the planting nail 5.

In addition, when the planting claw 5 is constructed from a pair of left and right claw rods arranged such that the distance between the tip acting parts of the pair of left and right soil gathering tools 11, 11 is about 13 mm between their outer surfaces. , approximately 20mm is common. Further, C shown in FIG. 4 is the lowest point where the planting claw 5 enters into the mud.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which FIG. 1 is a side view, FIG. 2 is a plan view, and FIGS.
FIG. 5 is an enlarged side view of the main part, FIG. 6 is an enlarged longitudinal rear view of the main part, and FIG. 7 is an enlarged transverse plan view of the main part.
Soil collector, 11A... mud holder, 12... shaft, a
...Dirty face.

Claims (1)

[Scope of Claim for Utility Model Registration] In conjunction with the planting operation of the planting device 6, which is equipped with a plurality of pairs of planting claws 5 that operate vertically in circulation, a pair of left and right soil gathering tools 11 for each planting claw 5,
In the rice transplanter, each of the earth-harvesting tools 11 is configured to backfill the groove b formed in the mud surface a by the planting claws 5 from both left and right sides by reciprocating the soil-filling tools 11 up and down. , is configured to be attached to a single shaft 12 extending in the width direction of the aircraft body and to be moved reciprocally by vertically swinging around the shaft 12,
The mud presser part 11A of No. 1 is formed with a surface that presses the mud toward the front and the side in a state of earth-clamping action during downward movement. The rice transplanter is characterized in that the rice transplanter is arranged so as to overlap with the upward circulation trajectory of the planting claws 5 in a side view in the soil gathering action state. The planting device 6 is a seedling stand 4 in a backward tilting position.
The rice transplanter according to claim 1, wherein the rice transplanter is arranged such that the planting claws 5 are located at the front part of the rice transplanter.