JPH033139Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a seedling stand that can place a plurality of pine seedlings in parallel in the horizontal direction and that can be moved back and forth in the horizontal direction, and a seedling stand that can place pine seedlings when the seedling stand is moved laterally. A shutter that can individually open and close a plurality of seedling take-out openings formed in a frame that slides and guides the lower end in a state corresponding to each of the placed seedlings, and a shutter that is provided corresponding to each of the seedling take-out ports, The present invention relates to a seedling planting device including a mechanism capable of adjusting the movement locus of the tip of the attached claw in the distance direction with respect to the seedling take-out port.

In the conventional seedling planting device, it is necessary to reduce the number of planting rows near the ridge by interposing a row clutch in the transmission system to the planting claws, which can independently drive and stop the planting claws. When this occurs, each row clutch corresponding to the reduced number of rows is disconnected and the shutter is closed, but in this case, each row clutch corresponding to the number of rows to be planted is Because it is necessary to intervene, the transmission system tends to become complicated and large. Furthermore, since the shutter's row clutches were configured to be operated separately with no relation to each other, it was easy to forget to open the shutter and operate the row clutches, or when planting. If the shutter is closed by mistake in such a condition, an erroneous operation is likely to occur, and as a result, the planting claw collides with the shutter, resulting in deformation and damage to the shutter and the planting claw.

The present invention aims to improve such conventional drawbacks.

The characteristic configuration of the seedling planting device according to the present invention, which has been made to achieve such an object, is that the claw trajectory adjustment mechanism is moved to a non-planting operating position where the tip movement trajectory of each of the planting claws deviates from the seedling take-out port. In addition to being configured to be adjustable up to The functions and effects of this characteristic configuration are as follows.

<Function> In other words, by using the function of the claw trajectory adjustment mechanism that is originally equipped in this type of seedling planting device as it is or by only partially modifying it, it is possible to do this without using the conventional individual row clutch. It is possible to reliably stop taking out the desired number of seedlings. Furthermore, in conjunction with the adjustment operation of the claw trajectory adjustment mechanism, the shutter can be switched to the open position when the seedlings are being taken out, and the shutter can be switched to the closed position when the seedlings are not being taken out. Collision of the planted nail with the shutter can be reliably avoided.

<Effects> Therefore, while simplifying and compacting the transmission mechanism to the planting claws, it has become possible to reliably prevent deformation and damage to the shutters, planting claws, etc.

Hereinafter, embodiments of the configuration of the present invention will be described based on the drawings.

A seedling resting stand 1 is provided which is tilted to the ground on which a plurality of pine seedlings can be placed horizontally in parallel and can be moved back and forth in the horizontal direction. A plurality of seedling take-out ports 3 are formed in the frame 2 that slides and guides the lower end of the frame 2 at appropriate regular intervals in the horizontal direction, and each of the seedling take-out ports 3 is provided at a corresponding location. In conjunction with the horizontal movement of the seedling table 1, each of the seedling take-out ports 3
By cyclically operating the planting claws 4A while passing ... from above to below, the pine seedlings on the seedling stand 1 are taken out from each seedling take-out port 3 in units of planting units and planted. Seedling planting mechanism 4...
... to constitute a seedling planting device for a rice transplanter.

Each of the seedling planting mechanisms 4 includes a drive crank arm 4C that circulates a planting arm 4B equipped with a planting claw 4A, and a swing link 4D.
It is configured by providing.

In the sliding guide frame 2, each of the seedling take-out ports 3 can be swung open and closed individually by unstable switching swinging, and in the closed position, the pine seedling sliding step at the seedling take-out ports 3 is eliminated, A shutter 5 is provided to guide the downward movement of the taken-out seedlings by the planting claws 4A in the open position, and the movement locus of the tip of each planting claw 4A is directed in the distance direction with respect to the seedling take-out port 3. A claw trajectory adjustment mechanism 6 is provided, which has a means for adjusting the tip movement trajectory of the planting claw to a non-planting position where the tip of the planting claw is removed from the seedling take-out port 3. A mechanism 7 is provided which automatically and reversibly switches each of the corresponding shutters 5 to the closed position in conjunction with the operation of changing to the planting position.

To configure the claw trajectory adjustment mechanism 6, a screw shaft 6A is attached to the planting transmission case 8 and is biased downward by a spring 6B so as to be able to rotate around the vertical axis and slide freely in the direction of the rotation axis. The swinging fulcrum shaft 4d of the swinging link 4D is screwed onto the threaded shaft 6A, and a rotational operation handle 6C is pivoted to the upper end of the threaded shaft 6A so as to be swingable around the horizontal axis. When the handle 6C is changed from the horizontal position to the vertical position, the screw shaft 6A rises against the elastic biasing force due to contact with the planting transmission case 8. By moving the cam 6, the tip movement locus of the planting claw 4A is changed all at once to the non-planting action position.
D is installed consecutively.

The interlocking mechanism 7 is composed of a rod that connects the shutter 5 and the handle 6C of the pawl trajectory adjustment mechanism 6.

Therefore, when the handle 6C is changed from a horizontal position as shown by the imaginary line to a vertical position as shown in the solid line, the tip movement trajectory of the planting claw 4A passes through the seedling removal port 3. of,
From the position shown by the imaginary line, as shown by the solid line, the tip of the planting claw 4A is located at a non-planting position where the locus of movement deviates from the seedling take-out port 3, and the shutter 5 is moved through the rod 7. It is closed as shown by the solid line. Then, when the handle 6C is reversed and the posture is changed from the vertical posture to the horizontal posture, the planting claws 4
A is located at the planting operation position as shown by the phantom line, and the shutter 5 is opened via the rod 7 as shown by the phantom line.

When it is necessary to change the amount of seedlings taken, the handle 6C is rotated from the horizontal position as shown by the imaginary line in FIG. One by one, that is,
Rotate in integer multiples of 360°. Then, in the middle of one rotation of the handle 6C, the shutter 5 which is in the open state as shown by the imaginary line once shifts to the closed side as shown by the solid line, but at the end of one rotation, the shutter 5 is in the open state. can be left in the state. Fine adjustment is possible by making the pitch of the screw shaft 6A small.

Further, a member 9 is provided on the sliding guide frame 2 for detecting that the seedlings have been vertically fed to a predetermined position by swinging as the seedlings come into contact with the stems of the seedlings located in the front row of the pine seedlings. is provided, and in conjunction with the swinging displacement of the vertical feed detection member 9, it automatically and reversibly changes from the non-operating position located on the back of the seedling tray 1 to the feeding stop-operating position in which it plunges into the bed soil of the pine seedlings. A first stopper 10 is provided whose swing is switched to the position of the first stopper 10, and the working position is such that the upper surface of the bed soil of the pine seedlings is pressed against the seedling platform 1 side to stop feeding of the pine seedlings, and the pine seedlings are moved from the bed soil part of the pine seedlings. a second stopper 11 that can be changed to a non-working position that is spaced apart; and the vertical feed detection member 9.
A limit switch 12 for detecting the detected swinging of the stopper 12 and a solenoid 13 for automatically and reversibly changing the second stopper 11 to the operating position based on the detection operation of the switch 12 are provided.

With this configuration, fluctuations in the number of pine seedlings to be taken out due to variations in the planting interval of pine seedlings can be suppressed as much as possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of the seedling planting device, and FIGS. 2 and 3 are side views of essential parts, respectively. 1... Seedling stand, 2... Sliding guide frame, 3... Seedling take-out port, 5... Shutter, 6... Claw trajectory adjustment mechanism, 7... Interlocking mechanism.

Claims (1)

[Scope of utility model registration request] A seedling tray 1 on which a plurality of pine seedlings can be placed horizontally in parallel and reciprocally movable in the horizontal direction, and a frame that slides and guides the lower end of the placed pine seedlings when the seedling tray 1 is moved laterally. 2, a shutter 5 that can individually open and close a plurality of seedling take-out ports 3 formed in a state corresponding to each placed seedling; and tips of each planting claw 4A provided corresponding to each of the seedling take-out ports 3. A mechanism 6 that can adjust the movement locus in the distance direction with respect to the seedling take-out port 3
In the seedling planting device, the claw trajectory adjustment mechanism 6 is configured to be adjustable to a non-planting position where the tip movement trajectory of each of the planting claws 4A deviates from the seedling take-out port 3. , a seedling characterized by being provided with a mechanism 7 that automatically and reversibly switches each shutter 5 corresponding to the adjustment operation to the non-planting position of the claw trajectory adjustment mechanism 6 to the closed position. Planting equipment.