JPH04179403A - Seedling planting apparatus of transplantation machine - Google Patents

Abstract

PURPOSE:To suppress the change of the posture of a seedling transplantation rod caused by the control of seedling-delivery amount by rotating a seedling transplantation rod around an intermediate shaft having a distance from the tip end of the seedling transplantation rod longer than the distance from a transplantation shaft, thereby controlling the delivery amount of the seedling. CONSTITUTION:Cases 8,11 are rotated by the rotation of a driving shaft 7 via a solar gear 13 and intermediate gears 15,16 and a seedling transplantation rod 22 is gyrated by a planetary gear 19. The case 11 is rotated around an intermediate shaft 10 relative to the case 8 to change the position of the seedling transplantation rod 22 fixed to a transplantation shaft 12.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is used in a rotary seedling planting device of a seedling transplanter, and is used to adjust the amount of seedlings to be transplanted from the seedling stand. .

(Prior Art) A crank-type seedling planting device has been used for many years, in which the rear end is attached to the fuselage by a link, the middle part is rotated by a crank, and the tip turns vertically in an elongated elliptical orbit. In this crank-type seedling planting device, by changing the attachment position of the end of the link, the position where the end of the seedling planting rod passes through the seedling platform side can be adjusted, and the amount of seedlings taken out from the seedling platform can be adjusted. Was.

This is where rotary seedling planting devices have appeared in recent years.

This device has less reciprocating motion like a crank type, so
It produces less vibration and is more stable (and the seedling planting device can be rotated at high speed, allowing for highly efficient work, and has been well received by customers.

(Problem to be Solved by the Invention) The amount of seedlings taken out in this rotary seedling planting device was adjusted by rotating the seedling planting rod around a planting shaft to which a planetary gear was attached. However, the posture of the seedling planting rod changed based on the adjustment of the amount of seedlings taken out, which was not desirable.

In contrast, this invention divides the conventional rotating case into a first case and a second case, and rotates the second case around an intermediate shaft to change the position of the tip of the seedling planting rod. Therefore, the distance from the center of rotation to the tip of the seedling planting rod is longer than in the conventional device, and the change in the posture of the seedling planting rod based on the amount of seedlings taken out is reduced.

(Means for solving the problems) That is, in order to solve the above problems, the present invention has the following features:
The first case 8 rotates around the drive shaft 7 in response to the power of the prime mover, and the drive shaft 7 is provided on the outer periphery of the first case 8.
The second case 1 rotates around the axis of the intermediate shaft 10 parallel to the
1, and a seedling planting rod 22 that is provided on the outer periphery of the second case 11 and rotates around the axis of the planting shaft 12 parallel to the drive shaft 7. The first intermediate gear 15 fixed to the intermediate shaft 10 meshes with the sun gear 13 which is stationary, and the second intermediate gear 16 fixed to the intermediate shaft 10 in the second case 11 meshes with the planting shaft 12. The fixed planetary gear 19 is meshed with the seedling planting rod 22 fixed to the planting shaft 12 so as to rotate around the axis of the drive shaft 7 while maintaining the same posture, and the second case 11 is This seedling planting device in a seedling planting machine is characterized in that it is provided so that the position of a seedling planting rod 22 can be changed by rotating with respect to a first case 8 around an intermediate shaft 10.

(Function) Since the present invention is configured as described above, when the drive shaft 7 is rotated by the power of the prime mover, the first case 8 and the second case 11
rotates around this drive shaft 7. Here, the sun gear 13 is stationary, and the first intermediate gear 15, second intermediate gear 16, and planetary gear 19 have the same number of teeth and are meshed in series, so the planetary gear 19 is stationary. It rotates around the drive shaft 7 in a posture. And the seedling planting rod 22
Since it is fixed to the planetary gear 19, it rotates together with the planetary gear 19 in the same attitude. In addition, in reality, all or part of the gears that mesh with each other are formed by eccentric gears, elliptical gears or other non-circular gears,
While rotating, the planetary gear 19 is oscillated so that the seedling planting rod 22 is in a vertical position at its lower end, and its tip is slightly raised and slanted at the position where it enters the seedling platform 4 and takes out the seedlings. Set.

Then, when the second case 11 is rotated around the intermediate shaft 10 so that the seedling planting rod 22 rotates clockwise when viewed from the side,
The tip of the seedling planting rod 22 (the tip of the seedling planting rod 22) now turns in a trajectory that is more leftward than before, increasing the amount of seedlings taken out.

On the contrary, when the second case 11 is rotated around the intermediate shaft 10 so that the seedling planting rod 22 rotates counterclockwise, the tip of the seedling planting rod 22 moves on a trajectory that is closer to the left than before. The amount of seedlings taken out is reduced.

(Effect) As described above, in this invention, the seedling planting rod 22 rotates around the intermediate shaft 10 which is farther from the tip of the seedling planting rod 22 than the planting shaft 12, and the amount of seedlings taken out can be reduced. Because adjustments are made,
There is little change in the posture of the seedling planting rod 22 based on the adjustment of the amount of seedlings to be taken out, and the effect on the planting posture of the seedlings is reduced.

(Example) Next, this invention will be explained in detail.

As shown in FIG. 1, a seedling planting device 2 is attached to the rear of a traveling vehicle body 1. This seedling planting device 2 includes a gear box 3 in the center,
It is equipped with a seedling stand 4 that moves left and right on top of it, and a float 5 that slides on the mud surface.

Further, a planting transmission case 6 passes under the seedling platform 4 and extends rearward from the gear box 3.

As shown in FIGS. 2 and 3, a drive shaft 7 that rotates under the power of the prime mover of the traveling vehicle body l is installed laterally at the rear end of the planting transmission case 6, and a first case 8 is attached to both ends of the drive shaft 7. The center part is fixed with a key 9 and is rotatable. Note that FIG. 3 shows only the left side thereof. A pair of intermediate shafts 10 are attached to the outer ends of the first case 8 in parallel with the drive shaft 7, and a pair of second cases 11 are rotated around their respective intermediate shafts 10 outside the first case 8. installed on. These second cases 11.11 extend in the outer circumferential direction, and the planting shaft 12 is attached to the outer end thereof.

Sun gear 13 attached to drive shaft 7 within first case 8
is provided with a claw 13a on the inside, and this claw 13a engages with a claw (not shown) of the planting transmission case 6 and remains stationary. Although FIG. 3 shows a pair of upper and lower configurations, the following description will focus on the upper side. A first intermediate gear 15 fixed to the intermediate shaft 10 with a key 14 meshes with the sun gear 13 described above. The second intermediate gear 1 is attached to the intermediate shaft 10 in the second case ll.
6 is fixed with a key 17, and a planetary gear 19 fixed to the planting shaft 12 with a key 18 meshes with this second intermediate gear 16. Since the sun gear 13, the first intermediate gear 15, the second intermediate gear 16, and the planetary gear 19 are made to have the same number of teeth, when the first case 8 rotates as described above, the planetary gear 19 rotates without rotating. In addition,
The sun gear 13, the first intermediate gear 15, the second intermediate gear 16, and the planetary gear 19, or all of these gears, are eccentric gears, elliptical pawls, or other non-circular gears, and the planetary gear 19 is rotated. It can be swung.

A metal 20 is fixed to the outer end of the planting shaft 12 with a square shaft and a cotter 21, and a seedling planting rod 22 is fixedly attached to the metal 20 inside thereof. The cam 23 in the chamber 22a of the seedling planting rod 22 is fixed to the second case 11, and the first case 8
It is made to rotate on the planting shaft 12 along with the rotation of the planting shaft 12. The base end of the lever 24 hits this cam 23 and swings around the intermediate bin 25, pushing the tip of the pushing rod 26 into the seedling planting rod 2.
It is designed to appear from 2 onwards. A pushing tool 27 at the lower end of the pushing rod 26 is located on the abdomen of the seedling planting claw 28, and when the seedling planting rod 22 reaches the lowest end, the pushing tool 27 is lowered relative to the seedling planting claw 28. This seedling planting claw 28 pushes out the seedlings held, and when it passes this position, it rises and the seedling planting claw 28 pushes out the seedlings held.
8 is designed to change into a state where it can hold seedlings.

A gear 30 with a knob 29 is attached to the outer end of the drive shaft 7 and meshes with a sector gear 31 , 31 extending inwardly from the respective second case 11 , and when the knob 29 is turned counterclockwise, the gear 30 rotates the sector gear 31.31 clockwise, the second case 11.11 rotates clockwise around the intermediate shaft 10, and the tips of the seedling planting claws 28.28 move to the left. Conversely, when the knob 29 is turned clockwise, the second case 11.11 rotates counterclockwise around the intermediate shaft 10, and the tips of the seedling planting claws 28.28 move to the right. The gear 30 is stopped in this moved position by friction caused by the disc spring 32.

An L-shaped receiving plate 33 (Fig. 1) is provided below the seedling platform 4, and a seedling outlet 3 is provided by being cut into this from the left.
4 is rotated so that the lower end of the seedling planting claw 28 passes through from above to below. Here, the lower end of the seedling on the seedling platform 4 is pushed downward and the receiving plate is stopped at the lower end of the receiving plate 33, so that the trajectory of the tip of the seedling planting claw 28 is adjusted as described above. When moving to the left, the amount of seedlings taken out increases, and when moving to the right, this amount decreases.

The seedling planting claw 28 is usually composed of two sticks, but it can also be made of a plate 35 as shown in FIGS. 4 and 5. In this case, the plate 35 is bent into a U-shape so that the extrusion tool 27 moves up and down at its abdomen. Then, by bending the central part 36 of the abdomen inward and scraping off the seedlings brought back by the pushing tool 27 by the guidance of the outer surface of the central part 36, continuous plant loss can be prevented. this is,
This is suitable for a transplanter for potted seedlings as shown in Fig. 6.

Further, as shown in FIGS. 6 and 7, a sensor 37 is provided below the seedling outlet 34 so as to rotate when the seedling is taken out from the seedling outlet 34 and descends. By configuring the microswitch 38 to operate, it is possible to notify whether or not the seedlings have been taken out.

[Brief explanation of drawings]

Fig. 1 is a side view of a seedling planting machine according to the present invention, Fig. 2 is an enlarged side view of a part thereof, Fig. 3 is a cutaway plan view thereof, and Fig. 4 shows a modified seedling planting claw. 5 is a front view thereof, FIG. 6 is a cut side view showing the lower end of the seedling stand, and FIG. 7 is a plan view thereof. The symbols in the figure are as follows.

Claims (1)

[Claims] The first case 8 rotates around the drive shaft 7 in response to the power of the prime mover, and the drive shaft 7 is provided on the outer periphery of the first case 8.
The second case 1 rotates around the axis of the intermediate shaft 10 parallel to the
1, and a seedling planting rod 22 that is provided on the outer periphery of the second case 11 and rotates around the axis of the planting shaft 12 parallel to the drive shaft 7. The first intermediate gear 15 fixed to the intermediate shaft 10 meshes with the sun gear 13 stationary on the axis, and the planting shaft 12 engages with the second intermediate gear 16 fixed to the intermediate shaft 10 in the second case 11. The second case 11 is provided so that the seedling planting rod 22 fixed to the planting shaft 12 rotates around the axis of the drive shaft 7 while maintaining the same posture by meshing with the planet gear 19 fixed to the second case 11. A seedling planting device for a seedling planting machine, characterized in that the seedling planting rod 22 is provided so as to rotate relative to the first case 8 around an intermediate shaft 10 to change the position of the seedling planting rod 22.