JPH05292813A - Seedling transplanter - Google Patents

Abstract

PURPOSE:To provide a seedling transplanter designed to reduce the dragging of the following seedlings due to a planting claw, leading to decreasing the variation in the number of stocks. CONSTITUTION:The objective seedling transplanter equipped with (A) a planting claw 7 under vertical motion at a regular pitch to plant the object seedlings in a farm following drawing them out of a seedling outlet 6 provided on a sliding rail 5 slidably supporting the lower end of a seedling table 4 and (B) a seedling holding device switchable synchronously with the actuation of said planting claw 7 over the attitudes for separating the object seedlings for planting from the following ones and for external retreat prior to the actuation of drawing out seedlings by the planting claw 7. And, a holding claw 8a in the seedling holding device is tapered so as to be wider from the sharp tip 12 toward the rear when viewed from the side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanting machine for planting crop seedlings such as straw grass seedlings in a field, and more specifically, it can be vertically moved at a constant pitch to freely slide the lower end of a seedling stand. It has a planting claw for taking out the planting target seedling from the seedling taking-out port formed on the sliding rail that supports the plant and for planting it in the field. The present invention relates to a seedling transplanting machine provided with a seedling holder that can be switched between an acting posture to be actuated and a posture to be retracted outward in synchronization with the operation of the planting claw.

[0002]

2. Description of the Related Art In the above-mentioned seedling transplanter, conventionally, as disclosed in, for example, Japanese Patent Laid-Open No. 3-183409,
In some cases, the holding claws of the seedling holding device are composed of a pair of left and right elastic wire rods.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Since the seedlings to be planted may float near the seedling take-out port and the holding operation by the planting claw may not be carried out smoothly, in such a case, hold the seedling and push it toward the seedling take-out port and use the planting claw. It is designed so that it can be securely held. However, in the above-described conventional structure, when the seedlings to be planted are inserted between the seedlings to be planted and the succeeding seedlings, and the seedlings to be planted are pushed out while blocking the movement of the succeeding seedlings, the tip of the holding claw is moved back to the retracted position. There was a case where the root part of the succeeding seedling was hooked and taken up and pulled up, and there was an adverse effect that the subsequent planting operation could not be carried out smoothly. In addition, the wire rod does not have a sufficient effect of separating the seedlings into the roots of the seedlings to be planted and the succeeding seedlings as they are, and there is a possibility that the number of planted plants may vary, and there is still room for improvement. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic constitution of the present invention, in the seedling transplanting machine described at the beginning, the holding claws in the seedling holder are narrowed so that the width becomes wider from the sharpened tip toward the rear side in a side view. The point is that it is formed in a tapered shape.

[0005]

[Operation] When the holding claws act on the seedlings to be planted, the seedlings are successively formed into a wider taper shape. Therefore, after the sharp tip of the tip penetrates between the seedling and the succeeding seedling, these seedlings are further invaded. The seedlings to be planted are pushed out to the seedling take-out port by pushing the seedlings back and forth, and the seedlings to be planted and the succeeding seedlings are reliably separated. As a result, the subsequent seedlings are less likely to be dragged out in a carry-like manner when the seedlings are taken out by the planting claws, and the holding claws themselves are less likely to be pulled up.

[0006]

Therefore, by reasonably improving the shape of the holding claws, the seedlings to be planted and the succeeding seedlings can be more reliably separated, and the trailing seedlings are dragged by the holding claws and the planting claws. It reduces the occurrence of holdings and suppresses the variation in the number of planted plants,
It became possible to reduce the risk of stock-out to a small number.

[0007]

Embodiments will be described below with reference to the drawings. Figure 3
Shows a straw plant transplanter. A seedling planting device 2 is movably connected to a rear portion of a traveling machine body (not shown) via a link mechanism 1. The seedling planting device 2 slidably supports the lower end of the seedling stand 4 which moves up and down at a constant pitch with respect to the planting transmission case 3 which also serves as a frame and which reciprocates left and right at a constant pitch. The planting claw 7 for taking out the seedling from the seedling taking-out port 6 formed on the sliding rail 5 and planting it in the field, the planting claw 7 acts on the seedling before the seedling taking-out operation, and the seedling to be planted is taken out from the seedling taking-out port. 6 is provided with a seedling holder 8 for pushing and holding the seedlings. The planting claw 7 is attached to the tip of the planting case 10 supported by the swing crank mechanism 9, moves up and down while drawing a substantially elliptical locus in a side view, and enters from the seedling take-out port 6 to plant the planted seedlings. Operates to hold and plant in the field. The seedling holder 8 includes front and rear swing arms 15, 16 on the planted transmission case 3.
Gear occlusal mechanism 11 provided in the transmission case 3 and supported by the parallel four-series link mechanism so as to be swingable back and forth.
Thus, the holding claws 8a at the tip of the rearward swinging position and swinging forward are located above the entry site of the planting claws and above the root of the seedling to be planted, and the seedlings are planted. It is configured so as to be pushed and held toward the take-out port 6 and to be oscillated and driven by switching to an operating position where it is separated from a succeeding seedling. The posture switching operation is performed in synchronism with the driving of the planting claw 7, and the drive timing is set so as to switch to the working posture prior to the seedling taking-out operation by the planting claw 7. That is, the rocking arm 15 is configured to be rocked back and forth from the drive shaft 17 of the crank rotation arm 14 of the rocking crank mechanism 9 for driving the planting claw via the gear meshing mechanism 11. The holding claw 8a is formed in a tapered shape such that the holding claw 8a becomes wider from the sharpened tip 12 toward the rear side in a side view. More specifically, as shown in FIG. 1 and FIG. 2, the holding claw 8a has a forked end portion cut out in a bifurcated shape, and the split claw portions 13 and 13 sandwich and hold the seedling to be planted. Each split claw part 1 is configured to push out to the seedling take-out port 6.
3 and 13 are formed such that the tips are sharply pointed and the rear side is wide so as to be tapered in a side view. According to this structure, the tip sharpened portion 12 invades between the planting target seedling W1 and the succeeding seedling W2 at the time of acting on the seedling, and along with the invasion, the upper side surface 13a of the claw portion 13 and the lower slope portion 13b. The above action acts to push each seedling up and down, and the slope portion 13b causes the planting target seedling W1 to be pushed out toward the seedling take-out port 6 side. Therefore, the planting target seedling W1 and the succeeding seedling W2 are reliably separated, part of the succeeding seedling W2 is less likely to be pulled out by the planting claw 7 when the seedling is taken out, and the holding claw 8a returns to the retracted position. It is less likely that a part of the seedling will be dragged with you when moving.

It should be noted that reference numerals are added to the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of the seedling take-out section

FIG. 2 is a perspective view of a holding claw.

[Figure 3] Side view of seedling transplanter

[Explanation of symbols]

 4 Seedling support 5 Sliding rail 6 Seedling outlet 7 Planting claw 8 Seedling holder 8a Holding claw 12 Sharp tip

Claims (1)

[Claims] 1. A slide rail (5) which vertically moves at a constant pitch and slidably supports a lower end portion of a seedling stand (4).
The planting nails (7) for taking out the seedlings to be planted from the seedling taking-out port (6) formed in
Prior to the seedling taking-out operation of the planting claw (7), it is switched in synchronization with the operation of the planting claw (7) between the working posture for separating the planting target seedling and the succeeding seedling and the retracting posture to the outside. A seedling transplanter provided with a free seedling holder (8), wherein the holding claw (8a) of the seedling holder (8) is wider from the sharpened tip (12) toward the rear side in a side view. A seedling transplanter that is formed in a tapered shape with a narrowed tip.