JPH05211810A - Seedling transplantation apparatus - Google Patents

Abstract

PURPOSE:To stabilize the rotation of a pushing cam and prevent the deviation of vertical reciprocation timing of a pushing claw by supporting a cam shaft of a pushing cam with a ball bearing to a planting case near the pushing cam. CONSTITUTION:An end of a pushing cam 36 is passed through the center of a planetary gear 31 and attached to the opposite face of a rotary case 22 in a non-rotatable state. A cam shaft 32 provided with the pushing cam is supported to a planting case 35 with a ball bearing 43 near the pushing cam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is used in a rotary type seedling transplanting device.

[0002]

2. Description of the Related Art In order to reduce vibration and improve efficiency, it has been proposed to use a rotary type seedling planting device in place of a conventional crank type seedling planting device. On the other hand, in the seedling planting device, the extrusion claw is moved up and down at the lower abdomen of the planting claw, and the seedling is extruded into the mud at the lower end for transplantation. An extrusion cam that rotates with respect to the planting case is used to move the extrusion claw up and down.

Here, in the above rotary type, a planetary gear is provided in a rotating case so as to rotate in a similar posture, and the planted case is fixed to the planetary gear. A means for rotating the extrusion cam with respect to the planting case is provided by fixing the extrusion cam housed in the planting case to the rotating case. And, a configuration in which the extrusion cam is fixed to the rotating case through a hole in the center of the planetary gear,
On the contrary, a configuration in which the planetary gear is fixed to the planting case through the central hole of the extrusion cam and the cam shaft is selectively used.

[0004]

The former is highly safe because the planting case is fixed to the planetary gears on the inner side of the rotating case and there is no protrusion for fixing on the outer surface of the planting case.
The cam shaft for fixing the extruding cam to the rotating case becomes long, the rotation of the extruding cam is not stable, the operation of the extruding claw is not smooth, and seedling leakage (floating seedlings or lodging) occurs. There is a risk. The latter has a short camshaft and can be made tough, but the planetary gear and the planting case are attached to the outside of the planting case, which is not safe.

The present invention is intended to improve the stability of the extrusion cam in the former case.

[0006]

In order to solve the above-mentioned problems, the present invention has a lateral drive shaft 23 and a rotating case 22.
Is fixed, a planetary gear 31 that rotates around the sun gear 29 in the same posture is mounted in the rotating case 22, and a planting case 35 in which a planting claw 39 is provided on the seedling table 19 side is provided. It is arranged on the side of the rotating case 22 and is fixed to the planetary gear 31, and the pushing claw 38 is provided at the lower end of the planting claw 39.
An extruding cam 36 that raises and lowers a is housed in the planting case 35, and the other end of the cam shaft 32 having the extruding cam 36 attached to one end passes through the center of the planetary gear 31 and the rotating case 22.
The cam shaft 32 is attached to the side wall on the opposite side of the planting case 35 by a ball bearing 43 near the pushing cam 36.
The seedling planting device is characterized by being supported by.

[0007]

In the seedling planting device constructed as described above, when the rotating case 22 is rotated by the lateral drive shaft 23, the planetary gear 3 is rotated.
1 revolves around the sun gear 29, which is the center of rotation, maintaining a similar posture. The planting case 35 arranged on the side of the rotating case 22 is fixed to the planetary gear 31, and therefore rotates in the same posture as the planetary gear 31. On the other hand, since the pushing cam 36 is fixed to the rotating case 22, the pushing cam 36 rotates together with the rotating case 22 and makes one rotation with respect to the planting case 35 when the planting case 35 turns once. Then, by the rotation of the pushing cam 36, when the planting claw 39 comes to the lower end, the pushing claw 38a is pushed down to transplant the seedlings into the mud,
When the extruding claw 39a is pulled up while the planting claw 39 is rising and passes through the end of the seedling mounting table from top to bottom, the planting claw 39 and the extruding claw 38a cut and hold the end of the seedling. , Then descend and repeat the above process.

[0008]

[Effect] As described above, the push-out cam 36 is installed in the planted case 3
Since the pushing claw 38a is moved up and down by the rotation with respect to 5, a relatively large load is applied. Here, one end of this push-out cam passes through the center of the planetary gear 31 and is attached to the surface on the opposite side of the rotating case 22 so as not to rotate, and it is long and cantilevered and unstable. Therefore, the timing at which the push-out claws 38a move up and down (in particular, the time when the push-down claws descend) may be shifted forward and backward, and the transplanted seedlings may fall or fall. However, according to the present invention, in the vicinity of the push-out cam 36, The cam shaft 32 to which the extrusion cam 36 is attached
However, since it is supported by the planting case 35 by the ball bearings 43, the rotation of the extrusion cam 36 is remarkably stable, and the possibility that the timing at which the extrusion claw 38a moves up and down may be eliminated is eliminated.

[0009]

Embodiments of the present invention will be described below. Figure 1
As shown, the link 15 projects rearward from the traveling vehicle body 1,
The seedling planting device 13 is attached to the rear end of the plant to form a riding-type seedling planting machine. The traveling vehicle body 1 is configured as follows. A pair of front wheels 2 and rear wheels 3 are arranged in front and rear,
After the power of the central prime mover 4 is shifted in the transmission case 8, the power is transmitted to the front wheels 2 via the transmission shaft 9 and to the rear wheels 3 via the transmission shaft 10, and these are rotated on the paddy field in the paddy field to drive the vehicle body. One is designed to promote. When the post 7 extends upward from the tip of the machine body and the handle 6 above it is operated, the front wheels 2 are steered. A seat 5 is provided on the prime mover 4.

A mounting frame 17 is provided at the rear end of the link 15 and can be moved up and down by the hydraulic device 16.
The seedling planting device 13 is configured as follows. The center front end of the transmission case 18 is attached to the attachment frame 17 by a rolling shaft in the front-rear direction. A seedling mounting table 19 is provided above the transmission case 18 in a forward tilted manner, and is configured to reciprocate left and right. As shown in FIG. 2, the upper surface of the seedling placing table 19 is partitioned by the front and rear side walls 20, 20 ... And five mat seedlings are arranged side by side on the respective seedling placing surfaces 19a, 19b. It is supposed to be posted. A seedling receiving plate 21 having an L-shaped section is fixed to the transmission case 18 below the seedling mounting table 19,
The edges of the mat seedlings on the seedling mounting surfaces 19a, 19b ... 19e are
It is adapted to reciprocate left and right on the seedling receiving plate 21.
The five outlets 21a, 21b, ... 21e are seedling receiving plates 21.
Are provided at equal intervals on the planting claws 39, 39 ...
Is designed to pass from top to bottom. Five sets of the planting implements 34, 34 ... Are the respective outlets 21a, 21.
b …… 21e, which is placed after 21e and is a five-row planting plant A,
It becomes B, C, D, E, and the end of each mat seedling is cut off and transplanted to the mud below. A central float 51 and a pair of left and right side floats 52 are arranged under the transmission case 18, slide on the mud surface by the forward movement of the traveling vehicle body 1, and the planting tools 34, 34 .. It is designed to do. And PTO axis 11
Then, the power of the prime mover 4 reaches the inside of the transmission case 18 via the transmission shaft 12, and the seedling mount 19 and the planting tools 34, 34 ... Are driven as described above. The lever 14 is attached to the post 7,
The wire 50 is pulled by the operation, and the clutch 45 in the transmission case 18 interrupts the transmission power. The levers 58a and 58b are provided on the seedling planting device 13 to pull the wire 59 to interrupt the power to the planting devices 34 and 34.

Vertical portions 18a, 18 of the transmission case 18
b and 18c extend under the seedling receiving plate 21 and the planting devices 34, 34 ... Are arranged at the rear ends of the seedling receiving plates 21, respectively. In the following, the left and right are symmetrical or the same, so one of them will be described. As shown in FIG. 3, the drive shaft 23 is provided laterally at the rear end of the vertical portion 18a of the transmission case 18, and the rotation of the prime mover 3 is transmitted via the toothed wheel 27 and the gears 26, 25, 24, and the rotation of It is adapted to rotate counterclockwise in FIG. The rotating case 22 has the key 2 at the tip of the drive shaft 23.
It is fixed at 3a. A sun gear 29 is rotatably attached to the drive shaft 23, and a boss 29 a extending from this to the transmission case 18 side is eccentrically fitted into a hole 28 a of a metal 28 integral with the transmission case 18, and the drive shaft 23 rotates, The sun gear 29 is designed not to rotate. Rotating case 2
A pair of planetary gears 31 and 31 are arranged at symmetrical positions on the outer periphery of the sun gear 2 with the respective intermediate gears 30 and 30.
9, and all the gears 29, 30, 31 have the same number of teeth, and the planetary gears 31, 31 are the sun gears 29.
It is designed to keep the same posture around and turn.
The pitch circles of the respective gears 29, 30, 31 are eccentric with respect to the center of rotation, and the planetary gears 31, 31 are
During the above turning, it is designed to swing about its axis. A pair of cylinder shafts 31a, 31a extends from the planetary gears 31, 31 to the outside of the rotating case 22, and mounting metal 60, 60 having a flange-shaped mounting surface 60b, 60b at its projecting end is secured by the cotters 40, 40. It is fixed to. The boss portions 60a, 60a of the respective mounting metals 60, 60 are inserted into the central portions of the rotating cases 35, 35,
The flanges 60b, 60b and the respective side walls are bolts 6.
It is fixed at 1,61 .... Therefore, the rotating case 3
Each of the mounting metal pieces 60 and 60 is fixed by fixing the mounting metal pieces 60 and 60 to each other.

Since the following planting tools 34, 34 are the same, one of them will be explained. As shown in FIG.
Is fixed downward on the surface of the planting case 35 on the side of the seedling mounting table 19, and the tip of the rotating case 22 turns counterclockwise on the orbit a by the rotation of the rotating case 22, and the take-out port 21a is lifted up while descending. It is designed to pass downwards from. Then, at this time, the end of the mat seedling on the take-out port 21a is cut off for one stock.
The orbit a in FIG. 4 is the orbit when the seedling planting machine is not moving forward, and a distorted loop curve is drawn by the above swing of the planetary gear 31, but the lower end is It has been removed.

As shown in FIGS. 3 and 4, the cam shaft 32 is arranged at the center of the cylindrical shaft 31a and the planetary gear 31, the right end of which is fixed to the right outer surface of the rotary case 22 by the plate 33, and the left end is planted. The push-out cam 36 is attached so as not to rotate inside the case 35. The cam shaft 32 is supported by the ball bearing 43 on the right side of the pushing cam 36 by the boss portion 60a of the mounting metal 60.

An extruding rod 38 is provided so as to move up and down in parallel with the planting claw 39, and an extruding claw 38a is fixed to the lower end thereof and is pushed down by an upper spring 42. When both ends of the lever 37 swinging around the pin 41 are engaged with the push-out cam 36 and the push-out rod 38 and the planting claw 39 rises through the track a, the push-out cam 36 rotates the lever 37 clockwise. When the planting claw 39 comes to the lower end of the track A, the lever 37 is separated from the projecting end of the pushing cam 36, and the spring 42 pushes down the pushing rod 38. Therefore, when the planting claw 39 moves up along the track B, the pushing claw 38a is pulled up after passing the position on the right in FIG. 4 to be in the left state. When this moves to the descending stroke and passes through the take-out port 21a, the planting claw 39 and the extruding claw 38a cut off and hold the mat seedling, and then descends as it is to bring the extruding claw 38a to the right state in the bottommost mud. Pushed down,
Transplant the seedlings you had so far by pressing them against mud.

[Brief description of drawings]

FIG. 1 is a side view of a seedling planting machine according to the present invention.

FIG. 2 is a plan view of a part thereof.

FIG. 3 is an enlarged cutaway plan view of a part thereof.

FIG. 4 is a cutaway side view of a part thereof.

[Explanation of symbols]

 19 seedling stand 22 rotating case 23 drive shaft 29 sun gear 31 planetary gear 32 cam shaft 35 planting case 36 extrusion cam 38a extrusion claw 39 planting claw 43 ball bearing

Claims (1)

[Claims] 1. A rotating case 22 is fixed to a sideways drive shaft 23, a planetary gear 31 that rotates around a sun gear 29 while maintaining a similar posture is mounted in the rotating case 22, and a planting pawl 39 is provided. The planting case 35 provided on the seedling table 19 side is arranged laterally of the rotating case 22 and fixed to the planetary gear 31, and the pushing claw 38a is provided at the lower end of the planting claw 39.
An extruding cam 36 for moving up and down is housed in the planting case 35, and the other end of the cam shaft 32, to which the extruding cam 36 is attached at one end, passes through the center of the planetary gear 31 and is provided on the side wall opposite to the rotating case 22. The seedling planting device is characterized in that the cam shaft 32 is attached and is supported by the planting case 35 by a ball bearing 43 in the vicinity of the pushing cam 36.