JP2001061311A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter having solved a problem that when the lower part of a boring body is opened, soil sometimes falls from sides into a hole made by the boring body in a seedling transplanter of conventional constitution and the fall of soil is an obstacle to cause deterioration of planting position of seedling. SOLUTION: This seedling transplanter is a boring body 26 which is periodically lifted and lowered, driven into soil at the bottom dead point of lifting and lowering or its vicinity, when driven into soil, opens the lower part and bores a hole for planting a seedling. The tip of the boring body is equipped with a notched recessed part 40 so as to project both ends longer than the central part. When the lower part of the boring body is driven into soil and is opened, the boring body forms channels at both ends of the bottom of the hole. Soil falling from sides is received and embedded in the channels so that the bottom of the hole is flattened as a whole. Consequently the planting position of a seedling such as pot seedling, etc., to be planted so that the bottom of the pot is placed on the bottom of the hole can be excellently held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for transplanting seedlings such as vegetables, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art A beak-shaped drilling body having a sharp lower end periodically rises and falls, and at or near the bottom dead center of the ascending and descending strokes, the drilling body penetrates into the soil and enters the soil. There is a seedling transplanter in which the lower part is sometimes opened to make a hole for planting seedlings, and seedlings are planted in the holes.

[0003]

In such a seedling transplanter of the prior art, when the lower part of the drilling body is opened, the soil from the side may collapse and fall into the hole formed by the drilling body, which is an obstacle. As a result, there is a problem that the posture for planting the seedlings is deteriorated.

[0004]

In order to solve the above-mentioned problems, the present invention takes the following technical means. That is,
The seedling transplanter according to the present invention rises and descends periodically, rushes into the soil at or near the bottom dead center of the up and down movement, and when it rushes into the soil, the lower part opens to open a hole for seedling planting. A drilling body 26 to be opened, characterized in that a cutout recess 40 is provided at the tip of the drilling body so that both ends protrude longer than the center.

[0005]

In summary, in the seedling transplanter according to the present invention, when the lower part of the drilling body enters the soil and opens, the drilling body forms grooves at both ends of the hole bottom. By receiving and embedding the soil that has collapsed from the sides into this groove, the hole bottom becomes flat as a whole. Therefore, the planting posture of a seedling such as a pot seedling planted so that the bottom surface is placed on the bottom of the hole can be favorably maintained.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a walking type seedling transplanting machine 1 as an example of a seedling transplanting machine. This walking type seedling transplanting machine 1 mainly includes an engine 2 and a main transmission case 3 at a front portion and running wheels. A pair of left and right front wheels 4 and 4 and rear wheels 5 and 5 are provided with a seedling planting device 6, a seedling supply unit 7, a soil-reducing wheel 8 and a steering handle 9. In the seedling transplanter 1, the front wheels 4, 4 and the rear wheels 5, 5 run in the ridges so that the aircraft crosses the ridges in the field, and the seedling planting device 6 transfers the seedlings to the left and right centers of the upper surface of the ridges. They are being planted.

At the left and right ends of the main drive case 3, the main drive case is provided.
Travel extension case 1 rotatable with respect to case 3
The right and left traveling extension cases 10 and 10 are fixedly provided at the respective ends of the left and right traveling extension cases 10 and 10, respectively. Therefore,
The motive power in the main transmission case 3 input from the engine 2 is transmitted to the traveling chain cases 11 and 11. A pair of right and left rear wheels 5, which are running wheels, are provided on the left and right inner sides of the turning end portions of the running chain cases 11, 11, respectively.
5 are attached, and the body travels by driving the pair of right and left rear wheels 5 and 5. Accordingly, the main transmission case 3 is a transmission that transmits power to the rear wheels 5, 5 as running wheels. On the other hand, a front wheel supporting frame 12 extending in the left-right direction is provided at the lower part of the engine mounting base so as to be rotatable around a rolling shaft 13 in the front-rear direction. , 4 are attached.

The left and right traveling extension cases 1
Numerals 0 and 10 are configured to extend and contract in the left and right lateral directions (the rear wheel drive shaft is also extended and contracted at the same time). The tread adjustment of the rear wheels 5 and 5 is performed by the extension and contraction in the left and right directions. Also,
The front wheel support frame 12 is provided so as to be able to expand and contract in the left and right directions, so that the tread of the left and right front wheels 4 and 4 can be adjusted.

At the rear of the left and right frames 14, there is provided a main frame 15 extending to the right. A steering handle 9 is provided at the rear end of the main frame 15, and the steering handle 9 is supported by the main transmission case 3 via the main frame 15. A hydraulic lift cylinder 16 is located at the center in the left-right direction at the rear of the main drive case 3.
Is provided. The hydraulic lift cylinder 16 is fixedly provided to a hydraulic switching valve portion 17 fixed to the main transmission case 3 and switches the hydraulic pressure from a hydraulic pump 18 fixed to the main transmission case 3. 17 is operated by operating a lifting / lowering operation valve provided in 17. A horizontal rod 19 extending left and right is provided at the cylinder rod end of the hydraulic lifting cylinder 16.
Rear arm lifting rods 20, 21 are pivotally attached to the left and right end portions of the upper arm 9, respectively, and the other ends of the rods 20, 21 are fixed to the traveling extension cases 10, 10, respectively.
The horizontal rod 19 and the traveling extension cases 10, 10 are connected to each other at the pivots 0a, 10a. Accordingly, a traveling chain case around the left and right output shafts of the main transmission case 3 via the horizontal rod 19 and the rear wheel lifting rods 20 and 21 due to the expansion and contraction of the hydraulic lifting cylinder 16.
The traveling chain case 11 is rotated.
The configuration is such that the rear wheels 5, 5 are moved up and down by the rotation of the vehicle 11, and the body is raised and lowered.

Further, a horizontal hydraulic cylinder 22 which is operated by hydraulic pressure from a hydraulic pump 18 is provided in a middle portion of the left rear wheel lifting rod 20 so as to extend and contract the left rear lifting rod 20. The left rear wheel 5 is moved up and down with respect to the vertical position of the right rear wheel 5 by the expansion and contraction of
The aircraft can be maintained horizontally horizontally regardless of the unevenness of the valleys. A right and left tilt sensor 23 of a pendulum type is provided on the right side of the main transmission case 3. The horizontal tilt sensor 23 is detected by the left and right tilt sensor 23 via a horizontal operation valve provided in the hydraulic pressure switching valve unit 17. Hydraulic cylinder 2
2 to maintain the aircraft body horizontally horizontally.

The seedling planting device 6 is provided with a transmission mission plant provided on the rear side of the main transmission case 3 with power from the main transmission case 3 for planting a single seedling in a field. The operation is transmitted and transmitted via a first planting transmission case 25A and a second planting transmission case 25B driven in conjunction with the planting transmission case 24 and the planting transmission case 24. The seedling planting apparatus 6 includes a beak-shaped drilling body 26 whose lower part opens and closes back and forth, and a drilling body operating mechanism 27 that operates to raise and lower the drilling body 26.

The hole body 26 includes a front member 26a and a rear member 2.
6b, the front member 26a is integrally attached to a front member mounting arm 29a rotatably supported by a front member rotation shaft 28a located behind the hole member 26. Rear member rotating shaft 28b located in front of 26
The rear member 26b is integrally mounted on a rear member mounting arm 29b rotatably supported by the rear member 26b. Therefore, the two members 26a, 26b are pivoted about the pivots 28a, 28b.
When is rotated, the lower part of the drilling body 26 opens and closes back and forth. The front member 26a and the rear member 26b rotate in conjunction with each other by an interlocking pin 30 which is loosely fitted in a long hole formed in the front member mounting arm 29a and the rear member mounting arm 29b. The front member 26 is positioned between the leg 31a of the front member mounting arm 29a and the leg 31b of the rear member mounting arm 29b.
a and a spring 32 for urging the rear member 26b toward the closing side.

Next, the hole operating mechanism 27 will be described. A rear link support arm 33a is rotatably attached to a support protruding from the second planting transmission case 25B. The front member rotating shaft 28a is connected to the rear end of the rear link 34a after the base is pivotally mounted on the base. Rear link 3
A rear link drive arm 35a provided at the rear end of the second planting transmission case 25B is connected to the intermediate portion of 4a.
A front link support arm 33b is rotatably attached to the planting mission case 24, and a rear member rotation shaft is attached to the rear end of the front link 34b whose base is pivotally attached to the support arm. 28b are connected. A front link drive arm 35b provided at the rear end of the first planting transmission case 25A is connected to an intermediate portion of the front link 34b. Double drive arm 3
When the drive links 5a and 35b rotate, the rear link 34a and the front link 34b swing up and down while changing the position of the base part back and forth, and the drilling body 26 draws an elliptical locus K in the up and down direction and moves up and down with a constant posture. Move.

An opening / closing arm 36 is provided at the base of the rear link 34a.
The front end of the opening / closing arm 36 and the front member mounting arm 29a are connected by an opening / closing rod 37. An opening / closing cam 38a for a normal seedling and an opening / closing cam 38b for a seedling with a high plant height are provided at an intermediate portion of the rear link 34a so as to rotate integrally with the rear link driving arm 35a.
And a cam follower 39 made of a bearing, which acts on either of them, is provided on the opening / closing arm 36.

A cut-out recess 40 having a semicircular or fan shape is provided at the tip of the hole body 26 so that both ends protrude longer than the center. That is, when the lower part of the hole body enters the soil and opens back and forth, the protruding ridges 40a and 40b at the left and right ends that protrude long form grooves on the left and right sides of the hole bottom. When the drilling body 26 is located at the bottom dead center, the opening / closing cam 38a (or 38b) engages with the cam follower 39, whereby the opening / closing rod 37 is pulled, whereby the front member 26a and the rear side of the drilling body 26 are pulled. The members 26b rotate back and forth in conjunction with each other, and the lower part of the hole body 26 opens.
When the drilling body 26 moves upward, the lower part is kept open. Then, the cam follower 3 is attached to the opening / closing cam 38a.
When the hole 9 acts, the opening / closing cam 38 and the cam follower 39 are disengaged from each other when the hole 26 reaches the top dead center, and the lower portion of the hole 26 is closed by the tension of the spring 32. When the cam follower 39 is acting on the opening / closing cam 38b, the lower portion of the drilling body 26 is closed at a position where the drilling body 26 is slightly past the top dead center. When the drilling body 26 is at a position slightly past the top dead center, the seedling supply unit 7 drops and supplies the seedlings into the drilling body. At this time, the lower part of the hole body 26 is closed. The drilling body 26 holding the seedling descends and rushes into the soil of the ridge. Then, at the bottom dead center, the lower part of the hole making body 26 opens to form a seedling transplanting hole, and the seedlings held in the hole are released and planted. When the lower part of the drilling body enters the soil and opens, the left and right ridges 4 of the cutout recess 40 of the drilling body are opened.
Since a groove is formed at the bottom of the hole by the action of 0a and 40b, even if there is soil that has collapsed from the left and right sides, it will be received and embedded in this groove. As a result, the hole bottom is wide and flat as a whole, and the planting posture of the pot seedling having a wide bottom surface and good sitting can be favorably maintained.

The seedling supply section 7 is provided above the seedling planting device 6 and includes a seedling supply turntable 41 for sequentially supplying one plant seedling to the seedling planting device 6. The seedling supply turntable 41 includes a crank rod 42 that reciprocates back and forth by transmission from the planting mission case 24,
Vertical rotation shaft 44 via one-way clutch mechanism 43
It is designed to rotate around. Further, the seedling supply rotating table 41 is configured such that a plurality of seedling supply cups 45 are provided at predetermined intervals along a circumference around the rotation shaft 44. The seedling supply cup 45 is the cup 45
Are provided to be openable and closable, and below the seedling supply cup 45 only when the seedling supply cup 45 reaches a predetermined position by the rotation of the seedling supply rotating table 41. A seedling supply cup opening / closing guide 46 provided so as to open is fixedly provided on the machine body side. Accordingly, the rotation of the seedling supply rotating table 41 causes the seedling supply cup 45 to rotate.
Comes to a predetermined position A, the bottom surface 45a of the seedling supply cup 45 is opened to drop and supply the pot seedling in the seedling supply cup 45 to the lower drilling body 26. When the seedling supply cups 45 rotate out of the predetermined position A, the bottom surfaces 45a of the seedling supply cups 45 are closed.

The seedling supply cups 45 are provided with an infinite number of see-through holes 47 so that the seedlings can be clearly seen from the side. On the front side of the seedling supply rotating table 41, a seedling mounting frame 48 for mounting the seedlings raised on the cell tray together with the cell tray is provided. A pair of left and right covering soil compression wheels 8 are provided at the rear position of the seedling planting position, roll on the ridge surface as the aircraft advances, and collapse the soil around the seedling planting holes after seedlings are planted. The hole is backfilled and the trace is lightly crushed.

Another embodiment 1 (FIG. 9) will be described. The outer periphery of the hole body 26 is covered with an elastic resin body 49. When the resin body is bent into the soil, the resin body is bent. It is constructed so that the adhering soil can be repelled by the resilience. Therefore, the adhesion of soil can be prevented, and the drilling operation can be performed accurately.

Another embodiment 2 (FIG. 10) will be described. FIG. 10 shows a method of mounting the vegetable transplanter on a light four truck,
The rear wheel 5 is pushed down to the maximum, the rear part of the vehicle body is largely lifted, and the body is largely tilted back and forth so as to fit within the width of the bed 51 of the light four truck 50. At this time, it is preferable that the covering soil pressure reduction wheel 8 is also largely lifted upward, and that the handle 9 can be folded from the middle as shown in the figure when the handle 9 slightly protrudes outside the loading platform.

[0020] The transplanter having three ridges and four ridges has one tread.
In the case of loading from the back of the usual loading platform, the loading platform width was too narrow to be mounted on the light 4th. Naturally, the total length of the transplanting machine is also about 2000 mm, which is crucial. However, by adopting the mounting method as described above, the vegetable transplanter can be mounted by being loaded from the side of the light four-loading platform.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter.

FIG. 2 is a plan view of the seedling transplanter with a part omitted.

FIG. 3 is a side view of the seedling planting apparatus.

FIG. 4 is a plan view of the seedling planting apparatus.

FIG. 5 is a plan view of a drilling body.

FIG. 6 is a side view of a part of the drilling body.

FIG. 7 is a front view of a part of the drilling body.

FIG. 8 is a diagram showing a comparison operation with the conventional case.

FIG. 9 is a perspective view of a drilling body.

FIG. 10 is a rear view showing a state in which the vegetable transplanter is mounted on a mini truck.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Seedling transplanter, 2 Engine 3 Main drive case 4 Front wheel 5 Rear wheel 6 Seedling planting device 7 Seedling supply part, 8 Covering pressure reduction wheel 9 Steering handle 10 Traveling extension case 10a Upper arm 11 Traveling chain S 12 Front wheel support frame 13 Rolling shaft 14 Left and right frame 15 Main frame 16 Hydraulic lifting / lowering cylinder 17 Hydraulic switching valve 18 Hydraulic pump 19 Horizontal rod 20 Rear wheel lifting / lowering rod 21 Rear wheel lifting / lowering rod 22 Horizontal Hydraulic cylinder 23 Left-right inclination sensor 24 Planting transmission case 25A First planting transmission case 26 Drilling body 26a Front member 26b Rear member 27 Drilling body operating mechanism 40 Cutout recess 40a Ridge 40b Ridge 41 Seedling supply turntable 45 Seedling supply cup 48 Seedling placement frame

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshikatsu Aoki 1 Eighth Tokura-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Within the Technical Department (72) Inventor Tamaki Kubo 1 Yachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. F-term (Reference)

Claims (1)

[Claims] 1. A drilling body that rises and descends periodically and enters the soil at or near the bottom dead center of the elevation, and when it enters the soil, its lower part opens to open a hole for planting seedlings. A seedling transplanter characterized in that a cutout recess is provided at the tip of the drilling body so that both ends protrude longer than the center.