JPH0353617Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is designed to prevent the pine-shaped seedlings placed on the seedling tray from slipping down toward the seedling outlet. The seedling stand is configured to be vertically movable and can be switched between an active position in which it presses the seedlings, and a non-active position in which it moves away from the pine-like seedlings when the vertical feed mechanism operates to feed out the pine-like seedlings toward the seedling take-out port. The present invention relates to a seedling planting device comprising:

[Conventional technology]

In this type of seedling planting device, the seedling stay is retracted to a non-working position by the operation of the vertical feed mechanism. The rotating drive shaft of the tool and the drive arm for changing the posture of the seedling stay are interlocked and connected by a connecting rod, so that the posture of the seedling stay can be changed to the non-working posture only when the vertical feed mechanism is activated. Atsuta (for example, Japanese Patent Publication No. 57-22285).

[Problem that the invention attempts to solve]

However, for such a conventional configuration,
If we were to incorporate a clutch that drives and stops each of the multiple planting mechanisms separately, it would be possible to simply have both of them coexist; Even if the corresponding planting mechanism is stopped, the vertical feed mechanism is configured to operate integrally for all rows, so the vertical feed mechanism will continue to operate even in the planting row where each row clutch is disengaged. The seedling stay will repeatedly stop operating, so each time the seedling stay will switch its posture between a working position and a non-working position.

Therefore, the seedling stay repeatedly presses the same part of the pine-shaped seedling that is in a stopped state.
This caused damage to the pine-shaped seedlings, which was unfavorable for planting work.

The purpose of the present invention is to provide a system that can solve the problems of the conventional method by providing a rational linkage mechanism between each row clutch and a seedling stay.

[Means for solving problems]

The characteristic configuration of the present invention is that the posture change of the seedling stay corresponding to the planting stop row is stopped in conjunction with the clutch disengagement operation of each row clutch that drives and stops parts of the plurality of planting mechanisms individually. Its functions and effects are as follows.

[Effect]

That is, since the operation of the corresponding seedling stay is stopped by the cutting action of each row clutch, it is possible to prevent the repeated pressing action (pounding phenomenon) on the same part of the pine-like seedling.

[Effect of idea]

As a result, by rationally configuring a linkage mechanism that clearly targets changes in the posture of seedling stays in the planting stop row corresponding to each row clutch, changes in the posture of seedling stays in other planting rows can be suppressed. There is no problem with planting work. In addition, damage to pine-shaped seedlings is suppressed in the planting stop row compared to the conventional structure, and subsequent seedling work using the planting claws can be carried out smoothly.

〔Example〕

As shown in FIG. 7, the transmission shaft 1 extending from the passenger aircraft (not shown) is connected to the planting transmission case 39, and the transmission shaft 1 is connected to the planting transmission case 39 for each two planting rows. A planting mechanism 5 is provided with a planting claw 3 and a planting arm 4, etc. at the rear end of the planting case 2 that extends out.
A seedling planting device A is constructed which includes a seedling platform 6 that can slide back and forth from side to side with respect to the planting mechanism 5, and a grounded float 7 below the seedling platform 6. A riding type rice transplanter is constructed by linking the device A to a riding machine (not shown) via a lifting link mechanism 8 so as to be able to move up and down.

The structure of each clutch 9 will be explained in detail. As shown in FIG. 5, the power from the transmission shaft 1 extending from the passenger body (not shown) is applied to the front end side of the planting case 2, which is equipped with a pair of planting mechanisms 5, 5 on both the left and right sides. A sprocket 11 is loosely fitted onto the transmission shaft 10, and supports a transverse transmission shaft 10 thereon. A clutch member 12 is spline-fitted onto the transmission shaft 10 facing the sprocket 11 so as to be slidable in the transmission axis direction Each clutch 9 is provided with teeth and is capable of transmitting power from the transmission shaft 10 to the sprocket 11.
It is structured as follows. Axis center Y for this clutch 9
A clutch operating piece 34 is provided that can freely rotate around the clutch member 12, with one end brought into contact with the clutch member 12, and the other end engaged with a recess 11a of a disc-shaped portion 11A integrally formed on the sprocket 11. ,
By operating the clutch operating piece 34 in the direction of the arrow shown in the figure, the clutch member 12 is disengaged from the sprocket 11 against the spring biasing force, and is engaged with the recess 11a of the sprocket disc-shaped portion 11A to release the sprocket 11. It is designed to stop rotating. The sprocket 11 is operatively connected to a crankshaft (not shown) of the planting mechanism 5 via a chain 35.

In the figure, 13 is a drive cam for changing the posture of the seedling stay 14, which will be described later.

As shown in Figures 1 to 3, the seedling stand 6
The vertical feed mechanism 15 that feeds the pine-shaped seedlings B toward the seedling take-out port 6A will be described in detail. A seedling feeder 16 that protrudes from the seedling resting surface a and feeds the pine-shaped seedlings B toward the seedling take-out port 6A is fitted onto a hexagonal shaft 17 that is supported so as to be able to operate independently for every two planting rows. , a one-way clutch 18 and a return spring 19 are attached to each hexagonal shaft 17.

Below the hexagonal shaft 17 is an operating shaft 2 supported by the seedling stand 6 and biased by a spring 39 in one direction.
0 is rotatably provided, and this operating shaft 20 has a drive arm 22 that abuts and drives a passive arm 21 extending from the one-way clutch 18, and a drive arm 22, which will be described later, at the end of the horizontal sliding stroke of the seedling stand 6. A transmission arm 24 that is brought into contact with and swung by a piston member 23 is fitted therein. The drive piston member 23 is pivotally supported by the planting case 2 so as to be slidable in the direction of its own axis Z, and is configured so as to urge the inner tip of the case 2 to come into contact with the cam surface of the posture switching drive cam 13. A curved contact portion 23a is attached to the outer tip of the case 2, and the transmission arm 24 is configured to contact and swing. The abutting surface 23b of the transmission arm 24 of the curved abutting portion 23a moves up and down to adjust the amount of seedlings taken via a support pin 25 that is slidably supported in the axial direction within the planting case 2. Since it is provided along the moving direction of the seedling stand 6, the above-mentioned curved contact portion 23a and the transmission arm 2 are connected to each other even though the amount of seedlings to be taken is adjusted.
The positional relationship with 4 remains unchanged. As shown in FIG. 4, reference numeral 26 in the figure is a frame that interlocks and connects the end of the helical shaft 27, which controls the horizontal sliding movement of the seedling tray 6, with the seedling tray 6. Further, the helical shaft 27 is housed in a cylindrical shaft 36 that is transmitted to the transmission shaft 1 by a bevel gear, and is configured to be able to slide laterally in the axial direction by a piece member 37 that engages with the helical groove.

Next, the seedling stay 14 will be explained in detail. A horizontal connecting rod 31 to which two long pressers 29 and four short pressers 30 are attached is attached to both end brackets 32 and 3.
2, and both end brackets 32, 3
2 An arm 3 integrally connected to a connecting rod 31 on the inner side
3, and this arm 33 is artificially connected to the connecting rod 31.
The connecting rod 31 is also configured to be able to change its swing position relative to the brackets 32 at both ends around the axis of the connecting rod 31.
The postures of both pressers 30 and 29 can be changed significantly, and are effectively used when replenishing seedlings. The above items are provided for each two planting rows as one set. The both end brackets 32 are interlocked and connected to a swing arm 28 fitted to the operating shaft 20 so as to be able to swing relative to each other, and by the operation of the drive piston member 23, both pressers 29 and 30 are held in a mat shape. It is switched to a non-working position in which it is spaced upward from the seedling B, and when the drive piston member 23 stops operating, it is switched to a working position in which it presses the pine-shaped seedling B onto the seedling stand a.

From the above configuration, the drive piston member 23, which always slides when in contact with the attitude switching drive cam 13, is connected to the transmission shaft 20 fitted to the operating shaft 20 at the end of the reciprocating sliding stroke of the seedling stand 6. By swinging the arm 24 and rotating the operating shaft 20,
By operating the swinging arm 28, this arm 28
The seedling stay 14 is retracted to a non-operating position via brackets 32 at both ends 32, 32 which are interlocked with each other.

On the other hand, the drive arm 22 is simultaneously rotated by the rotation of the operation shaft 20, and the seedling stay 1 is rotated.
After a certain period of time has elapsed since the raising operation in step 4, the passive arm 21 is actuated to rotate the seedling feeder 16. After vertically feeding the seedlings, the seedling stay 14 returns to its working position by the retraction of the driving piston member 23. When the row clutch 9 is operated in such a normal state, the power transmission to the sprocket 11 is cut off, so the operation of the drive piston member 23 is stopped and the seedling stay 14 is switched to the non-operating position. At the same time, the operation of the vertical feed mechanism 15 is also stopped.

As shown in FIG. 6, the seedling take-out port 6A of the seedling tray 6 is opened by bending the end of the sliding plate 38 slightly downward and cutting each row clutch 9 so that the front surface of the lower end of the pine-shaped seedling B in the stopped feeding state is opened. This structure is designed to prevent the sliding plate 38 from being damaged by being pressed against the end thereof, or from getting caught and damaged.

[Another example]

The seedling stay 14 is
It is only necessary to stop the vertical feed mechanism 15.
may be configured to operate.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling planting device according to the present invention, FIG. 1 is a partially cutaway vertical side view showing the drive system of the vertical feeding mechanism, and FIG. FIG. 3 is a partially cutaway longitudinal rear view showing the vertical feeding mechanism and seedling stay; FIG.
5 is a sectional view showing the helical shaft, FIG. 6 is a plan view showing the seedling outlet, and FIG. 7 is a side view of the whole. 5... Planting mechanism, 6... Seedling stand, 6A... Seedling take-out port, 9... Each row clutch, 14... Seedling stay, 15... Vertical feeding mechanism, B... Pine-shaped seedling.

Claims (1)

[Scope of utility model registration request] The seedling stay 14, which is configured to be able to move up and down, is switched between an active position in which the pine-shaped seedlings B placed on the seedling tray 6 are pressed onto the seedling placement surface and a non-active position in which the pine-shaped seedlings B are separated from the pine-shaped seedlings B, to take out the seedlings. Seedling planting that is configured to change to a non-operating posture in conjunction with the operation of a vertical feed mechanism 15 that feeds pine-shaped seedlings B toward an opening 6A, and to return to the previous working posture when the vertical feed is stopped. The device is configured to stop the change in attitude of the seedling stay 14 corresponding to the planting stop row in conjunction with the clutch disengagement operation of each row clutch 9 that stops driving a part of the plurality of planting mechanisms 5 individually. A seedling planting device.