JP2964683B2 - Transplant device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting device such as a vegetable transplanter for planting seedlings on a seedling mounting table in a field.

[0002]

2. Description of the Related Art An implantation rod having a pair of planting claws is moved up and down along a predetermined endless orbit, so that the planting claws clamp a seedling supplied to a predetermined position at an upper part of a stroke. There is a transplanting device such as a vegetable transplanting machine in which the seedlings held at the lower part of the plant are opened in the field scene. This type of implanting device is transmitted from a drive source side via a one-turn inertial clutch as an implanting clutch, and when the implanting operation is stopped during turning or the like, the implanting rod moves to a predetermined position in the stroke, for example, top dead center. To stop at.

[0003]

The above-mentioned conventional transplantation device
When the one-turn inertia clutch is disengaged
The engagement relationship is not completely broken and the clutch pawl
There is a problem that a contact sound is generated by clicking.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the transplanting apparatus according to the present invention moves the seedling on a predetermined
In a transplantation device to be transplanted, a predetermined movement locus of the transplantation device is determined.
An implanting clutch that cuts off transmission to the implanting device at the position
The transfer device whose transmission was turned off by the clutch with
Energize to position ahead of the fixed position
It is characterized in that means are provided.

[0005]

The planting crack is placed at a predetermined position on the movement trajectory of the transplanting device.
After rejecting the transmission of the
It urges to a position ahead of the predetermined position, so planting
Keeping the clutch completely disengaged
And no clutch contact noise is generated.

[0006]

FIG. 1 is an overall view of a vegetable transplanter according to an embodiment of the present invention. This vegetable transplanter 1 has an engine 2 and a traveling unit transmission case 3 at the front of the body, and a traveling unit. Rotating cylinders 5, 5 protruding from the left and right side surfaces of the transmission case 3
The front wheel transmission cases 6 and 6 are attached to the front end of the front wheel transmission case obliquely downward, and the front wheels 7 and 7 serving as propulsion wheels are pivotally supported at the lower end of the front wheel transmission case. A front transmission frame 9 having a transmission means is fixedly connected thereto, a planting portion transmission case 10 is provided at a rear end thereof, and a rear transmission frame 11 containing a transmission means is extended rearward from the planting portion transmission case. Then, the transplanting device 12 is provided at the rear end. A rear wheel support rod 14 is horizontally mounted near the front of the planting section transmission case 10, and rear wheel support arms 15,
A rear wheel 16 is pivotally mounted on the lower end of the rear wheel support arm. An earth digging device 18 and a pressure reducing device 19 are attached to a frame 17 integrally formed with the rear wheel support rod 14.

At the upper part of the fuselage, a seedling table 21 slightly inclined so that the front part is positioned higher is slidably supported by a horizontal frame 22 and rails 23 left and right, and is adjacent to the rear end of the seedling table. A seedling receiving plate 26 having a seedling take-out port formed at an appropriate position is provided integrally with the horizontal frame 22. The seedling mounting table 21 has an open bottom surface, and a seedling feeding belt 27 for transferring the seedlings on the table in the direction of the seedling removal port is assembled here. When the pot seedlings are placed on the seedling mounting table 21 and the planting section is activated, the seedling mounting table 2
1 moves laterally and supplies the seedlings in the front row in the transfer direction located on the seedling receiving plate 26 sequentially to the seedling removal outlet. When the seedling mounting table 21 reaches the end of the left and right stroke, the seedling feeding belt 26 moves by an appropriate amount, and transfers the group of seedlings on the seedling mounting table one row backward.

As shown in FIGS. 2 to 4, the implanting device 12 includes a first transmission frame 11 which is rotatably mounted on the rear transmission frame 11.
A rotating case 61, a second rotating case 62 rotatably attached to the first rotating case, and an implantation rod 63 rotatably attached to the second rotating case are provided. Claws 65, 65 and a seedling pushing tool 66 are provided. The first rotating case 61 is in the A direction, and the second rotating case 62
Are rotated at a predetermined speed ratio in the B direction, so that the implanted rod 63 relatively vertically moves in a constant posture while drawing an elongated elliptical orbit. L ₁ in FIG. 2 and FIG. 3 is the locus dated implantation杆取axis, L ₂ represents the locus of planting claw tip. At the upper part of the process, the planting claws 65, 65 are closed to clamp the seedling supplied to the seedling removal outlet, and at the lower part of the process, the planting claws 6
At the same time, the seedling pushing tool 66 is protruded and the holding seedling is opened into the hole for seedling transplantation formed in the field scene.

In the soil digging device 18, the soil digging tool 18a moves down intermittently in synchronization with the transplanting device 12, and forms a hole for seedling transplantation in a field scene.

In the pressure-reducing device 19, pressure-reducing wheels 19b, 19b, which are relatively heavy, are diagonally mounted on a pressure-reducing wheel support frame 19a rotatably mounted on the frame body 17 so that the distance between them becomes smaller toward the lower part. The crushing wheels 19b and 19b roll on the field scene as the aircraft advances, and crush the soil while moving the soil on both the left and right sides of the transplanted seedlings inward.

The front wheels 7, 7 and the rear wheels 8, 8 can be moved up and down by a lifting device (not shown), and the front wheels and the rear wheels are appropriately adjusted based on the detection result of the grounding sensor 68 for detecting the height of the field scene. Ascend and descend to keep the seedling planting depth constant.

A one-turn inertial clutch 70 shown in FIG. 5 is provided as an implanting clutch inside the implanting section transmission case 10, and power is transferred through the clutch via the clutch.
It is transmitted to 2. In the figure, reference numeral 71 denotes a primary clutch body fixedly attached to a primary shaft 72, and 73 denotes a secondary clutch body slidably attached to a secondary shaft 74. The two clutch bodies 71 and 73 are engaged with each other. Claws 71a and 73a are provided. The secondary clutch body 73 is urged toward the primary clutch body 71 by a spring 75, and the pawls 71a, 73a are always engaged and power is transmitted from the temporary side to the secondary side. When the clutch pin 76 is pressed against the tapered surface 73b of the secondary clutch body 73, the secondary clutch body 73 moves to the side opposite to the primary clutch body 71 with the rotation, and when the secondary clutch body 73 reaches a predetermined angle, the pawl 71a ,
The transmission of 73a is disengaged and the transmission is cut off. At this time,
Implantable rod 63 as shown in FIG. 2 is set to be positioned in dead center P ₁ on the stroke.

The implantation rod 63 is integrally attached to an implantation rod mounting shaft 80 provided on the second rotating case 62. An end of the implantation rod mounting shaft 80 opposite to the side to which the implantation rod 63 is attached projects outside the second rotating case 62, and a forcibly moving cam 81 is integrally attached to the projection end. Further, the second rotating case 62 is provided with an arcuate brake arm 82 whose one end is rotatably supported by a pin 85 and whose other end is pulled by a spring 86 toward the forcibly moving cam 81. . The forcibly moving cam 81 moves in the same direction all the time, but the direction of the brake arm 82 changes with the rotation of the second rotating case 62, and the inner circumference of the brake arm 82 changes during one cycle of the transplantation device. Part 82
a slides on the outer periphery of the cam 81 while the brake arm 82
Makes one rotation around the forced movement cam 81. That is, the implantation rod mounting shaft 80 is elastically urged toward the base side of the second rotating case 62 by the tension of the spring 86. As a result, rattling of the implantation rod 63 is reduced, and planting of the seedlings is performed well. As previously mentioned, although the cut one revolution inertia clutch 70 implant rod 63 is stopped at the top dead center P _1,
In this position, the inner peripheral portion 82a of the brake arm 82 is
1 is in a very unstable state where it is in point contact with the end of the upper edge portion 81a.
There proceeds further slightly in the direction of travel, the inner circumferential surface 82a of the brake arm as shown in FIG. 3 is stopped at the position P ₂ in contact with the upper edge 81a and the surface of the cam. Thus, the cam 81 and the brake arm 82, which are the implanted rod forcible moving means (biasing means) ,
After the implantation rod 63 stops at the top dead center, the implantation rod 63 is further moved in the traveling direction to a position further preceding on the movement locus.
In to forcibly moved slightly. At the same time, the secondary clutch body 73 of the one-rotation inertia clutch 70 also rotates, so that the secondary clutch body 73 moves away from the primary clutch body 71,
The claws 71a and 73a of both clutch bodies are completely separated.

FIGS. 6 and 7 show a different embodiment of the implanting device.
A disk 90 is mounted eccentrically on the protruding end of the disk, and a smooth guide surface 91 on which the outer peripheral surface of the disk slides.
A guide plate 91 having a is fixedly provided on the rear transmission frame 11. If such a guide plate 91 that regulates the position of the implantation rod 63 at the front of the stroke is provided,
At least when the seedlings are taken out, rattling of the implantation rod 63 is eliminated, and troubles such as the planting claws 65 and 65 biting into the seedling receiving plate 26 can be prevented.

[0015]

As described above, in the transplantation device according to the present invention, after the implanting clutch is disengaged at a predetermined position on the movement trajectory , the transplantation device is further moved to the predetermined position on the movement trajectory.
Biasing means forcibly biasing to a position preceding the position
After the planting clutch is turned off,
That engagement will be completely disengaged.
As a result, no clutch contact noise was generated.

[Brief description of the drawings]

FIG. 1 is an overall side view of a vegetable transplanter according to one embodiment of the present invention.

FIG. 2 is a side view of the implantation device in a first state.

FIG. 3 is a side view of the implantation device in a state different from the state shown in FIG. 2;

FIG. 4 is a plan view of the implanting device in the state of FIG. 2;

FIG. 5 is an explanatory diagram of a one-turn inertial clutch.

FIG. 6 is a side view of an implanting device different from the implanting devices shown in FIGS. 2 to 4;

FIG. 7 is a plan view of the implantation device shown in FIG. 6;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 vegetable transplanter 2 engine 7 front wheel 12, 12 ′ transplanting device 16 rear wheel 21 seedling mounting 63 planting rod 65 planting claw 70 1 rotation inertia clutch (planting clutch) 80 planting rod mounting shaft 81 planting rod forcing Moving cam 82 Brake arm 90 Disk 91 Guide plate

Claims (1)

(57) [Claims] 1. The method according to claim 1, wherein the seedlings move on a predetermined locus and are transplanted to a field.
In a transplantation device, a predetermined position of a movement locus of the transplantation device
Planting clutch for interrupting transmission to the transplantation device with the planting clutch,
The transfer device whose transmission has been turned off by the switch
< Desc / Clms Page number 21> An implanting device provided with means for urging the device to be located at a position preceding the device.