JPH07108132B2 - Vegetable transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Purpose of the invention [Industrial field of application] The present invention is provided with a grounding body for grounding in a field, and the grounding wheel is moved up and down according to the vertical movement of the grounding body to increase the depth of seedling planting. The present invention relates to a vegetable transplanting machine that keeps a constant level.

[Prior Art] A digging device is used to form a recess for transplantation in a field, seedlings of vegetables such as cabbage and Chinese cabbage are transplanted there, and the soil around the transplanted seedlings is covered with a soil covering device. There has been considered a vegetable transplanter in which the base of the seedling is covered with soil by pressing and the base is surely held in the soil.

[Problems to be Solved by the Invention] In the above-mentioned vegetable transplanter, the planting depth is adjusted by moving the planting working part up and down with respect to the field. When Asai is Asai, the pressing force of the soil cover plate is weak and the soil around the transplanted seedlings cannot be pressed sufficiently, and when the planting depth is deep, excessive force acts on the soil cover plate and the soil cover device is damaged. There was a problem that there were things.

In addition, when performing mulching work in parallel, when the planting depth is deep, the mud film makes a larger hole than necessary in the mulching film, which lowers the heat retention effect and cuts of the film cause the seedlings to grow. There was also a problem that the growth was adversely affected.

(B) Structure of the Invention [Means for Solving the Problems] In order to solve the above problems, the present invention has the following structure.

That is, the vegetable transplanter according to the present invention is provided with a grounding body for grounding in the field, and the grounding ring is moved up and down according to the vertical movement of the grounding body so that the planting depth of seedlings is always kept constant. In the machine, the planting depth adjusting means for adjusting the planting depth by changing the support height of the grounding body, and a soil cover repressor for covering the planted seedlings and suppressing the surrounding soil, It is characterized in that the support height of the soil cover compacting body is moved up and down in conjunction with the operation of the planting depth adjusting means to maintain the soil cover compacting effect constant.

[Operation] When the planting depth of the seedlings is adjusted by the planting depth adjusting means, the support height of the cover soil compactor fluctuates accordingly. The force for pressing can be kept almost constant.

[Examples] Examples described in the drawings will be described below.

This vegetable transplanter 1 has an engine 2 provided at the front end of the machine body.
The main transmission case 3 is arranged in the rear part, and the front wheel transmission cases 6, 6 are provided obliquely downward and rearward at the front ends of the rotary cylinders 5, 5 projecting from the left and right sides of the transmission case. Front wheels 7,7 as propelling wheels are pivotally supported at the lower end of the. The left and right front wheels can be moved up and down in cooperation with each other by an elevating mechanism for adjusting the planting depth.

A front transmission frame 10 having transmission means inside is extended and fixedly connected to one side of the rear portion (left side in the illustrated example) of the main mission case 3, and a transplant portion mission case 11 is provided at the rear end thereof. Has been. A cam shaft 12 for driving a soil digging device 30, a soil covering device 31, and a seedling feeding device 38, which will be described later, from the transplanting section mission case 11.
And a transplanting device 13 which will be described later.
A rear transmission frame 14 that is transmitted to the rear is extended to the rear. A support pipe 15 is fixed rearward and upward to an intermediate portion of the rear transmission frame 14, and an operation box 16 is provided at an upper end portion thereof. A control handle 17 and various control levers are attached to the control box 16.

A rear wheel support shaft 26 is laterally provided below the cam shaft 12, and a rear wheel support arm 2 rotatably provided at both ends of the shaft.
Left and right rear wheels 28, 28 are pivotally supported at the lower ends of 7, 27. The rear wheels 28, 28 also move up and down in association with the front wheels 7, 7. Further, at the center of the rear wheel support shaft 26, a front view gate-shaped frame 32 holding the earth digging device 30 and the soil covering device 31 is fixedly attached.

The lifting mechanism of the machine body is a hydraulic type, and a hydraulic pump 150 is integrally provided at the rear of the main transmission case 3, and a drive hydraulic cylinder 152 and its hydraulic valve 153 are provided behind it. When the hydraulic cylinder 152 contracts, the rotating cylinder portion 5 and the rear wheel support shaft 26 are rotated in a predetermined direction by the front wheel connecting rod 165, the rear wheel connecting rod 167, etc., and the front wheels 7, 7 and the rear wheels 28, 28 are moved. It moves up and down, and as a result, the aircraft moves up and down with respect to the field scene. This lifting mechanism is a planting depth control device explained below.
Controlled by 170.

The planting depth control device 170 includes a grounding body 173 on a support plate 172 projecting forward from a rotary shaft 171 located above the rear wheel support shaft 26.
Is attached, and the tip end of the vertical member 176 integrated with the grounding body and the spool 153a of the hydraulic valve are connected by a connecting rod 177. The grounding body 173 includes an intermediate plate portion 173a extending rearward from the base portion and side plate portions 173b and 173b provided on both sides of the intermediate plate portion, and has a shape surrounding the top of the ridge 205. Further, in the center of the rear part of the middle plate portion 173a, the transplanting claws 75, 75 of the transplanting device, the needle-like body 115 and the plate-like body of the earth digging device described later
A notch portion into which 116 is inserted is formed.

During work, the middle plate portion 173a is on the upper surface of the ridge 205 and the side plate portion 1
73b and 173b are in sliding contact with the upper slopes of the ridges 205, respectively, and proceed while leveling the top of the ridges, and the vertical movement according to the elevation change of the ridges is transmitted to the spool 153a of the hydraulic valve via the connecting rod 177. . That is, the grounding body 173 is
It has a role as a leveling tool for leveling and shaping the top of the ridge and a role as a sensor for detecting the height of the ridge. When the ridges rise and the rear part of the grounding body 173 moves upward, the arm 176 and the rod
The spool 153a is pushed in via 177, and the hydraulic cylinder 1
The hydraulic valve 153 is switched to extend 52. The extension of the hydraulic cylinder causes the arms 156, 156, 158, 158 to rotate via the front wheel connecting rods 165, 165 and the rear wheel connecting rods 167, 167 attached to the front wheels 7, 7
And the rear wheels 28, 28 simultaneously move down, and the aircraft is lifted. On the contrary, when the ridges are lowered and the rear part of the grounding body 173 moves downward, the body is lowered. In this way, the planting depth control device
By properly raising and lowering the machine body according to the change in the height of the ridges by the action of 170, the planting work unit can be kept at a constant height from the field scene.

On the upper part of the machine, a seedling stand 35 composed of a moving frame 33 and a receiving frame 34.
Are slightly inclined so that the front part is on the upper side. The moving frame 33 has a pair of front and rear rolls 38 at its bottom opening.
A seedling feeding device 38 in which a seedling feeding belt 38c is stretched is provided on a and 38b, and is supported by front and rear rails 39 and 40 so as to be slidable in the left and right directions. The receiving frame 34 is formed integrally with the rear rail 40 adjacent to the rear end of the moving frame 33,
Seedling outlets are formed in the center of the left and right. Seedlings for transplantation 20
As 0, a pot-shaped one is used, which is grown by a paper-made seedling raising device 201 in which pots 201a as shown in FIG. When the moving frame 33 on which the seedlings are placed reciprocates left and right, the seedlings in the last row on the receiving frame 34 are sequentially supplied to the seedling take-out port. When the moving frame 33 moves to the end of the left and right strokes, the drive roll 38a of the seedling feeding device 38 is rotated in a predetermined direction by a predetermined amount, and the seedling feeding belt 38a moves the seedlings backward by one row. .

The transplanting device 13 includes a first rotating case 71, a second rotating case 72, and a transplanting case 73, each of which has a plurality of shafts, gears, etc. incorporated therein, and the transplanting case 73 includes a pair of transplanting claws 75, 75 and a seedling extruding body 76.
Is provided. The first rotating case 71 rotates counterclockwise in FIG. 1 at a predetermined speed corresponding to the rotation speed of the front wheels 7, 7, while the second rotating case 72 rotates counterclockwise (clockwise direction). Rotating at twice the speed, the implant case 73 moves vertically by drawing an elongated elliptical orbit. Since the axis of the transplant case is set so as not to rotate relative to the machine body, the transplant case 73, the transplant claws 75, 75 attached to the transplant case 73, and the seedling extrusion body 76 maintain the same posture throughout. P in FIG. 1 represents the locus of the tip of the transplanted nail. At point A, a pair of transplanted nails 75, 75 hold the pot seedling supplied to the seedling take-out port, and at point B, the transplanted nail opens and the pot seedling is opened. Plant in the field. Also, at the point C, the seedling extrudate 76
Starts the downward movement and forcibly separates the seedling lifted while still attached to the transplanted nails 75, 75 from the transplanted nail, so that the seedlings can be transplanted reliably. The rear part of the transplanting device 13 is provided with a cover 78 that is erected on the rear end of the rear transmission case 14.
Is covered by.

The earth digging device 30 includes a mounting plate 11 at the rear end portions of an upper link 111 and a lower link 112 that are pivotally supported by upper and lower pivots 111a and 112a, respectively.
4 is pivotally connected to the mounting plate, and a needle-shaped body 115 having a pair of inverted U-shaped lower ends sharply formed on the mounting plate, and a plate facing right and left at both right and left ends and being oriented at a right angle to the traveling direction. Form 116
Is provided. The plate-shaped body 116 is fixed to the rear surface of the needle-shaped body 115 such that the lower end is positioned higher than the lower end of the needle-shaped body. The upper pivot shaft 111a is pivotally supported at the rear end of the grounding body support plate 172, and the lower pivot shaft 112a is at the tip of an arm 118 rotatably provided around the rear wheel support shaft 26. It is pivotally supported. The upper and lower pivot shafts 111a and 112a are connected to each other by a connecting plate 119. These grounding body support plate 172, arm 118
The connecting plate 119 constitutes a link mechanism having the pivot shaft 171 and the rear wheel support shaft 26 as a fulcrum and the upper and lower pivot shafts 111a and 112a as a connecting point. In addition, the mounting plate 12 fixed to the rear wheel support shaft 26
A spring 121 for urging the upper link upward is attached to 0. 122 is a stopper that regulates the upper limit of the operation of the upper link 111. As a drive mechanism of the earth digging device 30, a cam follower 124 made of a bearing is fitted to a shaft 123 provided on the upper link 111 and faces the cam follower 124. The cam mounting shaft 12 is provided with a fan-shaped cam 125. Cam 1 of cam mounting shaft 12
When 25 rotates, the upper link 111 is pushed down when the cam engages with the cam follower 124, the needle-like body 115 and the plate-like body 116 move downward, and when the engagement is released, the action of the spring 121 occurs. It is designed to move up. In addition, cam 1
Since the cam surface 125a for actuating the needle-shaped body 115 and the plate-shaped body 116 to temporarily stop at the lowermost portion is formed on the 25, the needle-shaped body 115 and the plate-shaped body 116 are submerged in the soil as the aircraft advances. It moves in the open state and a transplant hole is formed in the field.

In the soil cover device 31, support rods 131, 131 are connected to both ends of the lower pivot shaft 112a via universal joints 130, 130, the support rods project outward downward, and then bend backward, and left and right at their rear ends. A pair of soil cover tools 132, 132 are supported on both sides of the ridge 205. The soil cover 132 has a back cover on the rear end of the support plate 133 integrally attached with a cover soil compactor (a cover plate in this embodiment) 134 made of a flexible material such as synthetic resin.

The drive mechanism of the soil covering device 31 will be described.
An arm 140 is provided integrally with the 112a, and a cam follower 142 made of a bearing is provided at the tip of the arm 140 so as to face the cam 141 attached to the cam attachment shaft 12.
As the cam 141 rotates, the cam follower 142 is periodically pushed down, and the rotation of the pivot shaft 112a associated therewith is transmitted to the universal joints 130, 130. Pivot 112
Since the bases 131a and 131a of the support arm rods 131 and 131 are inclined with respect to a, when the support rods are driven, the left and right soil cover repressors 134 and 134 are slanted inward from the soil on the left and right sides of the transplanted seedlings. Press down. Since the soil pressed by the cover soil compactor presses the inclined side surfaces of the seedling pot portion 200a from both sides,
The soil portion is securely held at a predetermined position in a predetermined posture. Further, the pair of left and right cover soil pressers presses the soil around the seedling so that the soil is raised upward, and sufficient soil is also provided around the pot portion 200a.

During the operation, the seedling-mounting lateral moving device, the seedling feeding device 38, the transplanting device 13, the earth digging device 30, and the soil covering device 31 operate in synchronization with each other, and the transplanting device is formed in the transplantation hole formed by the earth digging device 30. The seedlings 13 sequentially plant the seedlings on the seedling mounting table 35, and then cover and suppress the soil with the soil covering device 31. During this planting work, as described above, the planting control device 170 keeps the planting depth of the seedlings constant regardless of the height of the ridges 205. The planting depth is adjusted by adjusting the reference height of the grounding body with a planting depth adjusting lever (planting depth adjusting means) 178. As shown in FIG. 4 (a), the lever 178
In the state in which is lowered, the ground plane of the grounding body 173 is lowered with respect to the machine body, so that the machine body rises from the ridge surface and the planting depth becomes shallow. Also, with the operation of lever 178, the upper and lower pivot shafts 1
11a and 112a move downward, and the levels of the earth digging device 30 and the soil covering device 31 are lowered. On the contrary, when the lever 178 is raised as shown in FIG. Further, at this time, the upper and lower pivot shafts 111a and 112a move upward, and the levels of the earth digging device 30 and the soil covering device 31 become high. In this way, when the planting depth is changed, the soil excavator will be changed accordingly.
Since the level from the ridge of 30 and soil cover device 31 is corrected,
The size of the transplant hole formed by the earth digging device 30 can be kept substantially constant, and the soil cover repressor 13 of the soil cover device 31 can be maintained.
The pressing force by which 4 compacts the soil is almost constant.

EFFECTS OF THE INVENTION As is clear from the above description, the vegetable transplanter according to the present invention moves the supporting height of the soil cover repressor up and down in cooperation with the operation of the planting depth adjusting means to reduce the soil cover effect. Since it is configured to be kept constant, it becomes possible to properly maintain the pressing force for the soil compacting body to compact the soil.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an example of a vegetable transplanter according to the present invention, FIG. 2 is a side view of essential parts, FIG. 3 is a rear view thereof, and FIG. 4 (a), (B) is explanatory drawing showing the effect | action of a principal part, and FIG. 5 is explanatory drawing of a seedling raising device. 1 ... Vegetable transplanter, 7 ... Front wheel, 13 ... Transplanter, 28 ...
… Rear wheel, 30 …… Soil digging device, 31 …… Soil cover device, 35 …… Sapling stand, 111a, 112a …… Pivot shaft, 134 …… Soil cover plate, 170…
..., planting depth control device, 173 ... grounding body, 178 ... planting depth adjusting lever, 200 ... seedling.

Claims (1)

[Claims] 1. A vegetable transplanter equipped with a grounding body for grounding in a field, wherein a grounding ring is moved up and down in accordance with the vertical movement of the grounding body so that the planting depth of seedlings is always kept constant. The planting depth adjusting means for adjusting the planting depth by changing the support height of the plant, and the soil cover repressing body for covering the planted seedlings and suppressing the surrounding soil. The vegetable transplanter characterized in that the support height of the soil cover compactor is moved up and down in synchronism with the above operation to maintain a constant soil cover compaction effect.