JPH0432031Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of a planting claw device in a type of rice transplanter having a bifurcated planting claw and a push-out claw for planting seedlings that is vertically movably arranged on the back side of the planting claw.

Currently, the methods of planting seedlings using a rice transplanter are:
Generally, one seedling is scraped off with a forked planting claw.
The so-called forced planting method is used, in which the roots of the seedlings are pinched and pushed into the soil for planting, but in this method, a claw for pushing out the seedlings is installed to ensure that the seedlings separate from the planting claw. A type of planted nail device that is attached to the back of the nail so that it can move up and down is widely used. As shown in FIG. 6, the planting nail device is equipped with a bifurcated planting nail rod having a slit portion (not shown) in the center on the front surface of the tip of the planting rod, and a bifurcated planting nail rod having a slit portion (not shown) in the center. The seedling extrusion claw C is arranged in such a way that the bifurcated tip C' of the L-shaped seedling extrusion claw C is in light contact with the seedling extrusion claw C, and the extrusion claw A is parallel to the planting claw A in relation to the swinging movement of the planting rod A. It has a structure that moves up and down in the directions of arrows D and E. In this type, the space between the back of the planting claw and the extruding claw is wide, so that the seedling can be deeply inserted into the slit of the planting claw. Because it can hold seedlings securely in place, it usually does not cause much problem when planting ordinary seedlings or seedlings in ordinary fields. For example, when applied to seedlings in highly adhesive nursery soil or in clay fields,
Sticky soil debris adheres to the gap between the planting claw and the seedling extrusion claw, making it difficult for the seedlings to move away smoothly from the planting claw, resulting in floating seedlings, fallen seedlings, etc. This results in a situation in which planting is not possible, and furthermore, a large amount of the sticky soil damage accumulates in the gaps along with the seedlings, as shown by the symbol G in Figure 6, making it impossible to plant. In addition, even in general fields, if water availability is poor and the field surface is dry, the surface pressure will force the seedlings into the slits of the planting nails, and the seedlings will not be able to separate from the planting nails. This method has disadvantages in that seedling rotation, missing plants, fallen seedlings, etc. occur, and the accuracy of planting is significantly reduced.

Therefore, the present invention has a protrusion on the front surface of the seedling extrusion claw that slides and fits into the slit of the planting claw so as to close it in the width direction, and a protrusion that is located below the protrusion and a predetermined distance apart from the slit for planting the seedlings. A seedling pressing part that holds the root part over a wide area, and a part that is located approximately inclined between the projection part and the seedling pressing part and adjacent to the seedling pressing part is a concave groove, and the part that is adjacent to the seedling pressing part is a concave groove, and the part that is adjacent to the seedling pressing part is a concave groove. and a holding part that holds the stem part continuous from the root part while guiding it in the concave groove in order to hold the stem part in a predetermined posture,
A rice transplanter which eliminates the above-mentioned drawbacks, characterized in that the crotch-like planting nails have an L-shaped cross section, and the seedling pressing part and the holding part have a shape that follows the back surface of the L-shaped planting nails. The object of the present invention is to provide a planted nail device.

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings.

As shown in FIG. 1, a planting mechanism 1 in a rice transplanter has a crank arm 3 whose substantially middle portion is pivoted at one end of a crank arm 3 which is rotatably driven around a drive shaft 2 mounted on the body side (not shown). A planting rod 6 whose rear end is pivotally connected is provided at one end of the swinging arm 5 which is supported and swings about the shaft 4, and a planting rod 6 according to the present invention is attached to the tip of the planting rod 6. A planting claw device 7 is attached, and as the crank arm 3 rotates, the tip of the planting claw device 7 moves up and down in a predetermined trajectory. The planting claw device 7 is composed of a planting claw 9 and a push-out claw 10 for planting seedlings arranged on the back side of the planting claw 9, and the push-out claw 10 includes a cam 11 fixed to the crank arm 3. , an arm member 12 whose one end abuts the cam 11 and whose other end is connected to the sliding rod member 13 and is biased by a spring 15 in the direction in which the rod member 13 protrudes; It is configured such that rotation of the arm 3 is converted into vertical movement with respect to the planting claw 9. More specifically, as shown in FIGS. 2 to 5, the planting claw device 7 includes a bifurcated planting claw 9 having a slit portion 9' in the center for holding the seedling, and a fork-shaped planting claw 9 on the back surface of which is movable up and down. As shown in detail in FIGS. 3 and 4, the push-out claw 10 has a substantially doglegged shape, and has a substantially doglegged shape. At the front of the center part, there is a protrusion 10a that slides by fitting into the slit part 9' of the planting claw 9 so as to close the slit part 9' in the width direction, and the lower part of the protrusion 10a Protrusion 10a at the rear
A seedling pressing portion 10b is integrally formed continuously with the seedling pressing portion 10b. Each claw portion of the planting claw 9 has an L-shaped cross section, and the front shape of the seedling pressing portion 10b is a convex shape that approximately matches the concave back shape of the planting claw 9, as shown in FIG. The structure is such that there is no gap between the planting claw 9 and the seedling pressing portion 10b of the push-out claw 10. Further, the rear surface of the seedling pressing section 10b has a smooth angular structure that slopes backward, and the front surface of the seedling pressing section 10b is provided with a V-shaped concave groove 10c that slopes forward. , and as clearly shown in FIG. 3, the V-shaped groove 1 is formed in the lower part of the protrusion 10a.
A slope 10d that leans forward to the same extent as 0c is provided, and these V-shaped grooves 10c and slope 10d give a predetermined inclination to the seedlings held in the slit portion 9' and hold the planted seedlings in a predetermined posture. It constitutes a holding part and has a structure that causes as little damage to the seedling stem as possible.

Since this embodiment has the above configuration,
When planting with a rice transplanter, the rotation of the crank arm 2 swings the planting rod 6, and when the planting claw device 7 at the tip reaches the raised position, the cam 1
1, the push-out claw 10 is also moved through the arm member 12 and the rod member 13 in FIGS. 1, 2, and 3.
As shown in Figure A, when the planting claw 9 is in the raised position and the planting device 7 is lowered to the planting position, the pushing claw 10 is also moved in synchronization with it as shown in Figures 3B and 4B. , it is in a position lowered relative to the planted nail 9. Therefore, when the planting claw device 7 descends from the raised position, the planting claws 9 pick up an appropriate amount of seedlings from the pine seedlings placed on the seedling stand (not shown) between the released slits 9'. The pushing claws 10 push out the seedlings held by the planting claws 9 from the planting claws 9 as they approach the lowered position, and in the lowered position, the roots of the seedlings are pushed out. It works by pushing it into the soil of the field. and,
At this time, the seedbed soil to be applied is highly adhesive, the field to be applied is clayey, and the above-mentioned adhesive is applied to the slit portion 9' of the planting nail 9 and the back side of the planting nail 9. Even if soil damage adheres, the protrusion 10a of the push-out claw 10 is slidably fitted into the slit portion 9' of the planting claw 9, so that the above-mentioned movement of the push-out claw 10 relative to the planting claw 9 can be avoided. Adhering soil is effectively removed and no longer accumulates. In addition, as described above, the planted nail 9 and the extruded nail 1
Since the sliding contact area with 0 has a structure that eliminates gaps as much as possible, it is difficult for soil to enter the sliding contact area. Furthermore, the back surface of the push-out claw 10 is also shaped like a corner that slopes backwards, and the number of concave portions in which soil accumulates is minimized, so that soil does not accumulate there either.

As explained above, according to the present invention, since the seedling pressing part 10b and the holding parts 10c and 10d are shaped along the back surface of the L-shaped planting claw 9, the seedling pressing part 10b and the holding parts 10c and 10d are formed in a shape that follows the back surface of the L-shaped planting claw 9. In addition, the seedling pressing part 10b, which has a large contact area and which is difficult for seedling stems, mud, etc. to get in, holds the roots of the planted seedlings, and the planted seedlings can be reliably and accurately pressed and planted. can. Further, even if sticky soil or some other foreign matter adheres to or gets caught in the slit portion 9', the cleaning action of the protrusion 10a prevents it from accumulating, and the slit portion 9' is always kept in a normal state. can be maintained. Furthermore, a holding part 10 is located approximately inclined between the protruding part 10a and the seedling pressing part 10b.
c and 10d hold the planted seedlings in a predetermined posture with a predetermined inclination, and the concave grooves 10c prevent the seedlings from spreading and guide them to the appropriate position, so the planted seedlings are always kept in the predetermined posture. The seedlings can be maintained and planted in an appropriate state, and the seedlings can be guided into the slit portion 9' of the planting claw 9 in an appropriate posture, thereby preventing damage to the seedlings. And, together with these, of course, for normal seedlings and normal fields,
Even when applied to seedlings under extremely adverse conditions or in fields under adverse conditions, it is possible to always plant seedlings in appropriate conditions.

[Brief explanation of the drawing]

Figure 1 is a structural diagram showing the planting mechanism of a rice transplanter equipped with a planting nail device according to the present invention, Figure 2 is a perspective view of the planting nail device according to the present invention, and Figures 3 A and B are operations of the planting nail device. 4A and 4B are front views showing the operating state, FIG. 5 is a sectional view taken along the line V-V in FIG. 4A, and FIG. 6 is a conventional planting nail device. FIG. 7... Planted nail device, 9... Planted nail, 9'...
...Slit part, 10... Push-out claw, 10a... Protrusion part, 10b... Seedling pressing part, 10c, 10d...
Holding portion, 10c...concave groove (V-shaped groove).

Claims (1)

[Scope of Claim for Utility Model Registration] A planting claw device for a rice transplanter in which a push-out claw for planting seedlings is arranged vertically movably on the back of a bifurcated planting claw having a slit in the center, which comprises: a protrusion that slides and fits into the slit of the planting claw so as to close it in the width direction; and a seedling that is located below the protrusion and a predetermined distance apart and that holds the root portion of the planted seedling over a wide area. A pressing part, a part of which is located substantially inclined between the projection part and the seedling pressing part and adjacent to the seedling pressing part is a concave groove, which is continuous from the root part in order to hold the planted seedling in a predetermined posture. a holding part that holds the stem part while guiding it through the concave groove; A planting nail device for a rice transplanter, characterized in that the part has a shape that follows the back surface of the L-shaped planting nail.