JPH02222603A - Device for forming planting hole of seedling planter - Google Patents

Abstract

PURPOSE:To widely form the bottom of a planting hole in front and back and prevent a film form turning over above the planting hole by driving the tips of a pair of digging pawls so as to form specific operation loci. CONSTITUTION:A pair of digging pawls 2 are vertically moved with advance of a machine body to form a planting hole 1. The tips of the digging pawls are driven so that operation loci (a) thereof may form thrusting loci (c) tilting back downward relatively to the forward direction (b) and pulling out loci (d) tilting front upward relatively to the forward direction (b). A film piece broken brought by the digging pawls is then pressed to the front of the hole in the pulling out loci (d).

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a planting hole forming device for a seedling transplanter.
It is convenient for forming planting holes in the soil surface covered with mulch film.

Prior Art and Problems to be Solved by the Invention Like vegetable planting machines, seedlings are planted in a form in which a planting hole is formed in advance in the soil surface and the seedlings are planted into this planting hole. When a planting hole is formed by simply inserting a digging claw into the soil surface, the bottom of the hole tends to be arcuate and shallow.

Means for Solving the Problems This invention provides planting holes (for planting seedlings) on the soil surface as it progresses.
The drilling claw (2) forming the hole drilling claw (2) has an insertion trajectory (c) in which the operation locus (a) of the tip of the drilling claw (2) is inclined rearward and downward with respect to the traveling direction (b). A planting hole forming device for a seedling planting machine is attached to a drive device (3) that is driven to form a pulling locus (d) that slopes forward and upward.

Functions and Effects of the Invention The digging claws (2) are moved up and down as the machine advances to form planting holes (1) at predetermined intervals on the soil surface. This anahori nail (2)
- When the tip moves downward and plunges into the soil surface.

In order to draw an insertion trajectory (c) that slopes backward and downward with respect to the direction of travel (b), the post-eclipse surface of the soil excavated by the tip of the digging claw (2) is formed as close to the plumbstone surface as possible. In addition, when pulling upward from the soil surface, it is possible to reduce the collapse of Itadori soil by pressing the erodible front of the soil to be excavated in order to draw a pulling trajectory (d) that slopes forward and upward. can.

Therefore, even if the planting hole (1) formed on the soil surface is shallow and small, the bottom surface is wide from front to back, making it difficult to resist planting seedlings, and especially on the soil surface after laying the mulch film. When forming a planting hole (1) in the planting hole (1), the film piece broken through by the hole digging claw (2) is pressed against the front surface of the hole along the pulling path (d), and the film piece is turned up upward in the planting hole (1). It is possible to prevent this and prevent it from getting in the way of planting seedlings.

Embodiment When the vehicle is turned over, the two vehicle bodies (4) are the engine (5) and the transmission case (6) from the front end to the rear.

A pair of left and right wheel cases (7), a hydraulic cylinder (8) that raises and lowers this wheel case (7), and this wheel case (7)
The rear wheel arm (9) is raised and lowered in conjunction with the soil surface (E).
a height sensor O0 that detects the height of the hole, a hole hole (2) that digs a planting hole (1) in the soil surface (E), a seedling tank OD that accommodates and transfers seedlings, and a hole hole (2) that digs a planting hole (1) in the soil surface (E); 2) A planting claw Ob for transplanting a seedling into the planting hole (1) formed in step 2), and a control handle f
13 etc. are arranged to constitute a seedling planting machine. (14 is the front wheel that is pivoted on the left and right wheel cases (7), (19 is the rear wheel that is pivoted on the left and right rear wheel arms (9). By controlling the expansion and contraction of the hydraulic cylinder (8), the rod ( The pair of left and right front wheel cases (7) are moved up and down via the front wheel transmission shaft (e.g. ) to raise and lower the vehicle body (4) parallel to the soil surface (e).

The height sensor Oe is attached to an arm Q4 L that can freely swing up and down around a support shaft (2) provided on the bracket Q1) of the vehicle body (4), and protrudes from this height sensor. A rod (3) connects the sensor arm 4 that controls the height and the lift control valve (to) that controls the hydraulic cylinder (8), and when the height sensor O1 moves upward beyond a certain range, , the front and rear wheels (B) (19) are lowered relative to the vehicle body (4) to raise the vehicle body!41, and conversely, the front and rear wheels (14109
By raising the car body (4) and sinking the car body (4), the car body (
4) is controlled and interlocked to maintain it at a constant height above the soil surface (e).

The hole digging claw (2) consists of a pair of left and right wire bodies, the upper parts of which are overlapped on the left and right sides, the lower ends of which are opened at a predetermined angle and formed wider than the upper parts, and each of which is sharpened.

The driving device (3) for this hole digging claw (2) has two upper and lower positions pivoted to the rear ends of the upper link (to) and the lower link (to) 01 (3).
Detachably attach to the DL bracket (support).

The base of these up and down links (to) (to) is bracket G!
+14; It is pivoted so as to be able to move up and down (to) (b), and is always tensioned by a spring (to) so as to rotate upward, and is brought into contact with the upper limit stopper (2). At the top of the upper link (to), a cam (to) fixed to a drive shaft (to) rotating at a fixed position drives the bottle (to) of the upper link (2) against a spring (to). By doing so, the hole digging claws (2) are lowered intermittently to form planting holes (1) at predetermined intervals on the soil surface (E). The lower link (to) is made longer than the upper link (to), and the distance between the fixed pivot part 0304 to bracket 4 is compared to the pivot part 01101 of each link @ (c) to bracket (2). The interval between the holes is configured to be short, and when the hole digging claw (2) moves up and down, the soil surface (
The operating configuration is such that it is in a plumb-straight position with respect to e), and in the bottom dead center position, it is tilted so that the lower end side is in the rear position and the upper part is in the front position.

The seedling planting device operates the seedling tank 0υ on the upper center of the vehicle body (4) and the seedling separation opening at the rear end of the tank from above into the soil below to separate and transplant the seedlings. This seedling tank 00 has a feeding belt on the bottom that receives and sends out the stored seedlings, and is configured to move back and forth from side to side with respect to the seedling receiving frame Ha forming the seedling separation opening (G). There is an interlocking M4. The planting claws are installed at the tip of the planting case (A) that rotates up and down so as to transmit rotation, and grip the bed attachment part (G) of the seedlings from the left and right to separate the seedlings. A planting hole (
1).

The soil surface (E) is covered with mulch film ■ on the upper side.
Operate the hole digging claw (2) from above between the mulch films to tear the mulch film (B) with the hole digging claws (2) and at the same time dig a planting hole (2) in the soil surface (E). Also, seedlings are planted using planting claws (b).

When forming a planting hole (1) on the soil surface (E) by inserting the Anahori nail (21) into the mulch film from above, use the Anahori nail (2)
Since the intervals between the tips of the mulch film (2) are wide, the beginning of tearing the mulch film (2) is wide, and the width becomes narrower as the digging claws (2) get deeper into the soil surface (E), so the mulch film ) can be kept constant. Also, on the leading edge of this mulch film ■, a torn piece ■ of the torn part is rubbed, but this torn piece (T) is attached to the planting hole (
1) is pressed against the front of the food.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partial side view, Figs. 2 and 3 are side views showing its operation, and Fig. 4
The figure is a front sectional view of a part thereof, FIG. 5 is a side view, FIG. 6 is an enlarged front view of a part, and FIG. 7 is a plane sectional view showing its operation. In the figure, symbol il+ indicates a planting hole, (2) indicates a hole digging claw, and (3) indicates a drive device.

Claims (1)

[Claims] As the hole-drilling claw (2) forms a planting hole (1) for planting seedlings on the soil surface as it advances, the operation locus (a) of the tip of this hole-drilling claw (2) is in the direction of movement (b). Forming a planting hole with a seedling transplanter attached to a drive device (3) that drives so as to form an insertion trajectory (c) that slopes backward and downward and a withdrawal path (d) that slopes forward and upward against the ground. Device.