JPH0523025A - Device for transferring seedling in seedling planter - Google Patents

Abstract

PURPOSE:To obtain the subject device, equipped with a reciprocating seedling carrier having a seedling feed belt at the bottom and an electric motor, connecting a power takeoff shaft to a seedling feed belt with a one-revolution clutch for transmitting the power at the transverse ends by reciprocating motion and capable of stably sending the seedlings. CONSTITUTION:A device for transferring seedlings of a seedling planter 1 is composed of a gear box 2 in the central part, a seedling carrier 3, installed obliquely above the gear box and reciprocating left and right, seedling planting rods 4 having tips turning the lower end of a seedling carrier 3 so as to pass from the upper part downward, taking out seedlings on the seeding carrier 3, transplanting the taken out seedlings in the mud surface and a float 5, provided under the gear box 2 and sliding on the mud surface by advance of the travel car body. The aforementioned device is provided with the seedling carrier 3, equipped with an endless seedling feed belt 11 in the bottom and reciprocating left and right and a one-revolution clutch 19, having an electric motor 12, attached to the seedling carrier 3 and having an always rotating power takeoff shaft 14 and carrying out power transmission when the seedling carrier 3 attains the transverse ends by reciprocation t6 the left and right is used to connect the power takeoff shaft 14 to the seedling feed belt 11. Thereby, the seedlings are stably sent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transfer device of a seedling planting machine for stably feeding seedlings.

[0002]

2. Description of the Related Art A seedling transfer device of a conventional seedling planting machine is provided on the seedling mounting table side when the seedling mounting table that reciprocates left and right comes to the lateral end. A lever is provided on the gear box and pushed against a rotating arm to rotate the seed feeding belt at the bottom of the seedling table. Therefore, the amount of one rotation of the seedling feeding belt is limited, and in a large block seedling that requires a large amount of transfer, the required amount of feeding may not be obtained. In order to solve this problem, it has been proposed to feed the seedling feeding belt with a pulse motor, but the initial rising of the rotation of the seedling feeding belt is poor and it has not been put to practical use.

[0003]

In order to solve the above problems, the present invention provides a seedling placing table 3 provided with an endless seedling feeding belt 11 at the bottom and reciprocating left and right, and the seedling placing table 3 therefor.
The output shaft 14 is equipped with an electric motor 12 that is constantly rotating, and the output shaft 14 is a one-rotation clutch 19 that transmits power when the seedling mounting table 3 comes to the lateral end by its left and right reciprocating movements. 14 and the seedling feeding belt 11 are connected to each other to provide a seedling transferring device in a seedling planting machine.

[0004]

Since the present invention is configured as described above, the seedling placing table 3 on which the seedlings are placed is forcibly reciprocated left and right, and the seedlings are laterally moved side by side at the front end of the seedling planting rod 4. One share is cut off. At this time, the output shaft 14 of the electric motor 12 provided on the seedling mounting table 3 is constantly rotating, but the one-rotation clutch 19 is in the disengaged state, so the seedling feeding belt 11 is stopped. is doing. When the seedling mounting table 3 comes to the lateral end due to the above movement, the one-rotation clutch 19 which has been stopped transmitting until now is engaged and the output shaft 14 is rotated by one rotation. Tell the belt 11. Then, the seedling feeding belt 11 rotates by a predetermined amount to feed the seedlings placed on the belt forward.

[0005]

As described above, according to the present invention, since the seedling feeding belt 11 is driven by the electric motor 12, the movement amount required for feeding the seedlings can be obtained, and even a large block seedling can be easily required. You can send as much as you want. In this invention, since the output shaft 14 of the electric motor 12 is constantly rotating and the output shaft 14 and the seedling feeding belt 11 are connected by the one-rotation clutch 19, the electric motor 12 is activated. Seedling feeding belt 1 due to slow rotation speed
The problem of speed 1 was eliminated, and the seedlings were sent out quickly, and the seedlings were sent stably.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seedling planting machine is constructed by connecting a seedling planting apparatus 1 shown in FIG. 1 with a link behind a traveling vehicle body (not shown). The seedling planting device 1 is rotated so that the gear box 2 in the central portion, the seedling mounting table 3, which is provided on the upper slope thereof and reciprocates left and right, passes through the lower end of the seedling mounting table 3 from top to bottom. Then seedling stand 3
It is made up of a seedling planting rod 4 for taking out and transplanting the seedlings on the mud surface and a float 5 provided under the gear box 2 and sliding on the mud surface as the traveling vehicle body advances.

As shown in FIGS. 1 and 2, a plurality of plate-like brackets 6 are laterally fixed to the lower abdomen of the seedling table 3, and a pair of upper and lower driving shafts 7 and 8 are supported by the brackets 6, respectively. The seedling feeding belt 11 is wound around the rollers 9 and 10 of the shafts 7 and 8. A plurality of protrusions 11a are integrally provided on the surface of the seedling feeding belt 11 so as to engage with the lower surface of the seedling.

An electric motor 12 and a seedling feeding case 13 are fixed to the abdomen of the seedling placing table 3 above the seedling feeding belt 11, and a toothed wheel 15 of an output shaft 14 which is constantly rotated by the electric motor 12 and a seedling. The chain 18 is wound around the toothed wheel 17 of the clutch shaft 16 provided in the feed case 13, and the clutch shaft 16 is constantly rotating. The rotation of the clutch shaft 16 is performed by the one-rotation clutch 19 and the transmission 20 in the seedling feeding case 13.
After passing through, the drive shaft 21 reaches the main drive shaft 7 to drive the seedling feeding belt 11. That is, as shown in FIG. 2, the passive clutch 2 integrated with the gear 22 is provided.
3 is rotatably attached to the left side of the clutch shaft 16, and is attached to the clutch shaft 16 with a key and is pushed to the left by the spring 24. It is adapted to bite the nail 23a. This driving clutch 25 is provided with a cam 25b having an inclined step on the cylindrical surface, and when the tip of the pin 26 comes up and engages with the cam 25b, the rotation thereof compresses the spring 24 and moves it to the right. Then, the claw 25a is separated from the claw 23a, and the rotation reaching the passive clutch 23 from the clutch shaft 16 via the driving clutch 25 is cut off.

The gear 28 fixed to the transmission shaft 27 is a gear 2
The rotation of the passive clutch 23 is transmitted to the speed change shaft 27 by engaging with the gear 2. The transmission 20 is configured as follows. That is, the three gears 29 fixed to the transmission shaft 21 and having different numbers of teeth are engaged with the three gears 30 rotatably provided on the speed change shaft 27. Speed change shaft 2
The slide key 31 provided at 7 is configured to move left and right by operating the knob 32 and selectively engage with one of the gears 30, and the rotation of the speed change shaft 27 causes the slide key 31 to engage. The gear 30 and the gear 30 that meshes with the gear 30 are transmitted to the transmission shaft 21.

A pair of toothed wheels 33, 34 are fixed to the ends of the transmission shaft 21 and the main shaft 7, around which a chain 35 is wound, and the rotation of the transmission shaft 21 causes the seedling feeding belt 11 to move in the direction indicated by the arrow in FIG. Turn in the direction. As shown in FIG. 1 and FIG. 3, a pair of planting cases 36 extends rearward from the gear box 2, and the above-mentioned seedling rods 4 are provided on both sides of the rear part of the gearbox 2 to form a four-row planting device. .. Although the crank type seedling planting rod 4 is shown in FIG. 1, a rotary type seedling planting rod 4 may be used as shown in FIG.

Horizontal rails 37 are fixed to the left and right planting cases 6, and a U-shaped guide tool 3 at the lower end of the lower abdomen of the seedling stand 3 is provided.
8 engages with this, and the seedling stand 3 is made to slide to the left and right. The upper part of the seedling mounting table 3 is also supported by the slider 40 on the upper end of the support column 39 extending upward from the gear box 2. Further, the seedling receiving plate 41 is fixed to the rail 37 to support the end of the seedling on the seedling mounting table 3. In this seedling receiving plate 41,
A seedling take-out port through which the tip of the above-mentioned seedling planting rod 4 passes is provided.

As shown in FIG. 3, the input shaft 42 projects forward from the gear box 2 to receive the rotation of the transmission shaft of the traveling vehicle body. The main shaft 43 is laterally attached to the gear box 2, and the rotation of the input shaft 42 is transmitted by a pair of bevel gears 44. A pair of toothed wheels 45 is fixed to the left and right of the main shaft 43, and a planting shaft 46 provided at the rear end of each planting case 36.
The chain 48 is wound around the toothed wheels 47 of the above, and the rotation of the input shaft 42 causes the respective seedling planting rods 4 to rotate.

A gear 50 is fixed in the middle of the cam shaft 49,
The gear 53 of the intermediate shaft 52, which meshes with the gear 51 of the main shaft 43, meshes with this, and the rotation of the main shaft 43 is transmitted to the cam shaft 49. The slanted groove is provided endlessly and the lead cam 4
9a is formed, and the lead cam 49a is provided on the cam shaft 49. A pair of cranks 54 are fixed to both ends of the cam shaft 49 outside the gear box 2 and are constantly rotating.

The lateral movement rod 55 is supported by the gear box 2 so as to move to the left and right, and the claw of the metal 56 fixed to this engages with the lead cam 49a, and the rotation of the cam shaft 49 causes the metal 56 to move. It is driven to reciprocate left and right.
A pair of left and right supporting rods 57 are fixed to both ends of the lateral movement rod 55,
The tip is fixed to the lower abdomen of the seedling mounting table 3, and the metal 56
When is moved to the left or right, the lateral movement rod 55 drives the seedling stand 3 to the left or right.

As shown in FIGS. 1 and 2, when the lever 58 is rotatably attached to the driven shaft 8 and protrudes downward, and the seedling placing table 3 moves to the lateral end as described above, the right side is reached. Alternatively, the left crank 54 hits against this, and is rotated counterclockwise in FIG. A link 59 is rotatably attached to the upper end of the seedling feeding case 13 by a horizontal shaft 60, is connected to a lever 58 by a rod 61, and is rotated in the same direction as the lever 58. The end of this link 59 is the pin 26
When the link 59 is rotated in the counterclockwise direction, the tip of the pin 26 separates from the cam 25b, and the driving clutch 25 is pushed to the left by the spring 24 so that its pawl 25a becomes the pawl 23a of the passive clutch 23. It is designed to bite.

Therefore, normally, as shown in FIG.
Drive clutch 25 is moved to the right and pawl 25a is moved to pawl 23.
The rotation transmission of the output shaft 14 of the electric motor 12 is cut off from a, and the turning of the seedling feeding belt 11 is stopped. When the seedling mounting table 3 comes to the side edge, the lever 58 moves to the crank 5
It is pushed by 4 and rotated, and the rotation is linked by the rod 61 to the link 5
9, the pin 26 is pulled out from the cam 25b.
Then, the driving clutch 25 is pushed by the spring 26 and moves to the left, and its claw 25a engages with the claw 23a, transmits the rotation of the driving clutch 25 to the passive clutch 23, and the seedling feeding belt 11 rotates. At this time, the lever 58 rotates so that it is hit by the crank 54 only once when the seedling placing table 3 comes to the lateral end, and returns to its original position by a spring or the like not shown, so that the pin 26 also cams. After being pulled out from 25b, it immediately returns to its original state. Therefore, when the pawl 25a is engaged with the pawl 23a and the passive clutch 23 makes one rotation, the driving clutch 2
5 moves to the right due to the engagement of the pin 26 and the cam 25b, and the rotation of the pawl 25a separated from the pawl 23a and transmitted is stopped.

The constant rotation of the output shaft 14 of the electric motor 12 in the present invention means that the output shaft 14 reaches a predetermined rotation speed before the power transmission by the one-rotation clutch 19 is started. Therefore, the rotation of the output shaft 14 may be stopped by the switch, and the output shaft 14 may be rotated by the switch a fixed time before the start of the power transmission by the one-rotation clutch 19.

The one-rotation clutch 19 is not limited to the illustrated construction. When the seedling placing table 3 comes to the left and right lateral ends, the switch may be operated so that the solenoid valve operates the one-turn clutch. The driving shaft 7 of the seedling feeding belt 11 can have the lower side as the driving shaft and the feeding surface of the seedling feeding belt 11 as the tension side.

As shown in the figure, when the transmission 20 is provided in the transmission path from the electric motor 12 to the seedling feeding belt 11, the seedling planting rod 4 is provided.
This is convenient because the amount of rotation of the seedling feeding belt 11 can be adapted to the amount of seedlings taken by.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the main part.

FIG. 3 is a partial transmission mechanism diagram thereof.

[Explanation of symbols]

 3 Seedling platform 4 Seedling planting rod 11 Seedling feeding belt 12 Electric motor 14 Output shaft 19 1 rotation clutch

Claims (1)

Claims: 1. A seedling mounting table 3 provided with an endless seedling feeding belt 11 on the bottom and reciprocating left and right, and an output shaft 14 attached to the seedling mounting table 3 and constantly rotated. The output shaft 14 and the seedling feeding belt 11 are connected to each other by a one-rotation clutch 19 which includes an electric motor 12 and which transmits power when the above-mentioned seedling placing table 3 comes to the lateral end by its left and right reciprocating movements. A seedling transfer device in a seedling planting machine.