JPH04370006A - Seedling transplanter - Google Patents

Abstract

PURPOSE:To maintain a seedling transplanter approximately horizontally irrespective of inclination of machine body by sliding a gliding plate of a seedling transplanter rotatable around a rolling shaft in the longitudinal direction along the top of ridge. CONSTITUTION:A machine body made of a U-shaped lever 3 extending from a pulley box 2 backward is equipped with a rolling shaft 22 extending in the longitudinal direction between a front and a rear wheels 7 and 9. A seedling transplanter 20 having a wide gliding plate 32 sliding along the top of a ridge 10 is laid rotatably around the rolling shaft.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] This invention relates to a seedling transplanter for field cultivation, and even if the ground is horizontally sloped, the seedling transplanting device consisting of a planting gear box, a seedling stand, and a planting rod can be used to transplant rice into ridges. This is to ensure the uprightness of the seedling by supporting it along the top surface of the seedling.

0002

2. Description of the Related Art A seedling transplanter for field farming moves forward across ridges, but if the ground is sloped laterally, the machine body tilts sideways and the seedlings are transplanted diagonally. In order to solve this problem,
As seen in Publication No. 17442, the left and right wheels are installed to move up and down independently, and the aircraft is kept horizontal by moving each wheel up and down using signals from a horizontal sensor installed in the aircraft. That is what is being attempted.

0003

However, this conventional system has the disadvantage that the front and rear wheels are connected and moved by a pair of left and right hydraulic devices, and that it requires automatic control and is expensive.

0004

[Means for Solving the Problems] This invention focuses on the fact that even if the ground is tilted sideways, the upper surface of the trapezoidal ridge is almost horizontal, and it is possible to plant seedlings even if the aircraft body is tilted sideways. The device attempts to maintain levelness along the top surface of the ridge. That is, the body 4 is made up of a gear box 2 to which the engine 1 is attached and a U-shaped rod 3 that extends backward from the gear box 2, and a seedling tray is made up of a planting gear box 17, a seedling stand 18, and a planting rod 19. The seedling planting device 20 is equipped with a planting device 20, and the body 4 is supported from the ground by a pair of front and rear wheels 7, 9 that straddle the ridge 10, and the seedling planting device 20 has a wide sliding plate 32 that slides along the upper surface of the ridge 10. The seedling transplanter is rotatably attached to the body 4 between the front and rear wheels when viewed from the side inside the U-shaped rod 3 around a rolling shaft 22 in the front and back direction.

[0005]

[Operation] Since the present invention is constructed as described above, when the left and right wheels move forward by straddling the ridges formed along the contour lines on the slope, the machine body tilts laterally. However, the seedling planting device is made to be independent of the aircraft and rotates around a rolling axis in the longitudinal direction, and its sliding plate slides along the top surface of a nearly horizontal ridge, so the aircraft Regardless of the above-mentioned inclination, it moves forward while remaining almost horizontal.

[0006]

[Effect] In other words, according to this invention, the seedling planting device rotates freely around the rolling axis and rotates along the top surface of the ridge regardless of the lateral inclination of the machine, compared to conventional devices. The configuration is extremely simple. In addition, some seedling transplanters for paddy fields have a seedling planting device rotated around a rolling axis at the rear of the traveling vehicle body, but compared to this, this invention allows seedlings to be planted between the front and rear wheels. Since the device is provided so that it can roll freely, there is little twisting between the machine body and the seedling planting device, resulting in good stability.

[0007]

[Example] Next, an example of the present invention will be described. Figure 1
As shown in FIG. 2, an engine 1 is fixed in front of a gear box 2, and its rotation is guided to a transmission mechanism within the gear box 2. A U-shaped rod 3 made of a pipe is fixed to a gear box 2 so as to extend backward to form a fuselage 4. A pair of left and right shaft cylinders 5
extend from the gear box 2 to the left and right, a pair of left and right chain cases 6 are fixed to both ends thereof so as to face diagonally rearward and downward, and a pair of left and right drive wheels 7 are attached to the lower ends of each. A pair of left and right support legs 8 extend downward from the rear of the U-shaped rod 3, and a pair of floating wheels 9 are attached to the lower ends of each. A pair of left and right drive wheels 7 and idle wheels 9 support the body 4 by straddling the ridge 10, and the rotation of the engine 1 is transmitted from the gear box 2 to the drive wheels 7, so that the body 4 moves forward.

A U-shaped bracket 11 with an open rear is fixed to the rear of the gear box 2. A pair of upper and lower parallel links 1
The tips of the brackets 2 and 13 are rotatably attached to the bracket 11, and the support frame 14 at the rear end is movable up and down. The lower end of the cylinder 15 is attached to the lower part of the gear box 2, and the upper end of a piston rod 16 extending obliquely upward from the cylinder 15 connects to the middle part of the upper link 12, and the rear end of the links 12, 13 is connected by the protrusion and retraction of this piston rod 16. moves up and down, and the support frame 14 moves up and down.

A seedling planting device 20 is composed of a planting gear box 17, a seedling mounting stand 18, and a seedling planting rod 19. A longitudinal pipe 21 is fixed to the lower part of the support frame 14, and the rolling shaft 2
2 is located at the center in the left-right direction of the seedling planting device 20 and protrudes forward from the planting gear box 17, and this pipe 2
1 and the rolling shaft 22 overlap, and the seedling planting device 20 is configured to rotate around the rolling shaft 22.

The transmission shaft 23 is configured to be expandable and retractable, and its both ends are connected to the transmission mechanisms in the gear box 2 and the planted gear box 17 through universal joints, and the rotation of the transmission mechanism in the gear box 2 is controlled by the planted gear. The signal is transmitted to the transmission mechanism inside the box 17. U-shaped support rods 24 extend obliquely upward from the tips of the small gear boxes 25 on the left and right sides of the planting gear box 17, and support the lower abdomen of the seedling stand 18 at their tips. Both ends of the pair of left and right balance springs 26 are attached with tension to the upper end of the support frame 14 and the inside of this support rod 24, and the tension of these left and right balance springs 26 keeps the seedling planting device 20 horizontal with respect to the support frame 14. is maintained.

The tip of the seedling platform 18 is supported by a support 27 in the center of the planting gear box 17, and the metal 29 of the lead cam 28 driven by the transmission mechanism in the pinion gear box 25 is attached to the seedling platform 1.
The seedling stand 18 is connected to the lower abdomen of the seedling cam 8 and moves from side to side by rotation of this lead cam 28. The first swing case 30 is attached to the inside of the rear end of the planted gear box 17, and the second swing case 31 is attached to the tip of the first swing case 30.
When the swing case 30 rotates counterclockwise in FIG. 1 by the transmission mechanism in the planting gear box 17, the second swing case 31 rotates clockwise, and when the first swing case 30 faces up and down, the second swing case 31 rotates clockwise. 31 extends up and down, and when the first swing case 30 faces forward and backward, the second swing case 31 is folded and faces back and forth. Then, the planting rod 19 at the end of the second rotating case 31 moves up and down in the same posture, turns up and down in a long elliptical trajectory, picks up one seedling in the seedling platform 18, and descends. The seedlings are transplanted onto the upper surface of the ridge 10.

A wide sliding plate 32 is rotatably attached to the lower belly of the planted gear box 18 with a horizontal pin 33, and its lower surface is configured to slide along the upper surface of the ridge 10. In other words, even if the ground is sloped, the ridge 10 has a trapezoidal top surface that is almost horizontal, so if the seedling planting device 20 descends due to its weight or other reasons, it will slide if the body 4 is tilted sideways. The lower surface of the plate 32 rotates around the rolling shaft 22 so as to follow the upper surface of the ridge 10, and the seedling planting device 20 moves forward in a horizontal position with the upper surface of the ridge 10 as a reference.

As shown in FIG. 3, when the sliding plate 32 rises, the valve 35 moves to the left via the bell crank 34, and the oil discharged by the pump 36 enters the left chamber of the cylinder 15, and the oil in the right chamber Returning to the tank 37, the piston rod 16 is pushed out. Also, when the sliding plate 32 is lowered, the valve 35
moves to the right, and the oil discharged by the pump 36 flows into the cylinder 15.
The oil in the left chamber returns to the tank 37, the piston rod 16 is pulled back, and the rear ends of the links 12 and 13 are lowered. That is, when the body 4 comes to a high point in the ridge, the sliding plate 32 goes up, and the seedling planting device 20 automatically goes up. Conversely, when the body 4 comes to a low place in the ridge, the sliding plate 32 goes up. As the seedlings are lowered, the seedling planting device 20 is automatically lowered, and the planting depth of the seedlings by the planting rod 19 is always kept constant. Note that this valve 35 has a configuration that can also be operated manually, but a description thereof will be omitted.

As shown in FIG. 4, a hole making tool 3 is placed in front of the planting rod 19.
8 is provided. That is, a pair of upper and lower links 40 and 41 extend backward from the bracket 39, and their rear ends are connected by a vertical rod 42 indicated by a chain line. Upper link 40 is spring 4
When the cam 45 of the transmission shaft 44 rotating in synchronization with the planting rod 19 pushes down the intermediate roller 46 of the upper link 40, the rear ends of the upper and lower links 40 descend. It looks like this. A hawk-shaped hole punching tool 38 is fixed to a front-opening U-shaped fixture 47 when viewed from above, and this fixture 47 rotates around a pin 49 at the top end through a long hole 48 at the bottom end to attach the nut 50 at the bottom. It is designed to be fixed in place.

Therefore, this hole-making tool 38 descends when the planting rod 19 is rising, and as the machine body 4 moves forward, a hole is made in the upper surface of the ridge 10, and the planting rod 19 transplants the seedling into the hole. do. This hole-making tool 38 can be adjusted back and forth by loosening a nut 50 and rotating it around a pin 49, depending on the variety of seedlings, planting depth, etc. As shown in FIG. 5, a groove making tool 51 can be provided in place of the hole making tool 38. This groove making tool 51 is attached to the rear end of the rod 52,
Although the lower end is always pushed into the upper surface of the ridge 10, it is convenient if it can be adjusted up and down depending on the hardness and softness of the field. That is, a sled-shaped hard/soft sensor 53 is attached to the rear of the sliding plate 32 so as to be pushed out by a spring 54, and when the field is hard, the hard/soft sensor 53 compresses the spring 54 and rises, and when the field is soft, it is pushed out by the spring 54. Let it fall down. Then, the vertical movement of the hard/soft sensor 53 is transmitted to the rod 52 using a wire 55 or other means to move the groove making tool 51 up and down.

[Brief explanation of the drawing]

FIG. 1 is a side view of a seedling transplanter to which the present invention is applied.

FIG. 2 is a partially removed plan view.

FIG. 3 is a conceptual diagram of the hydraulic mechanism.

FIG. 4 is an enlarged side view of the hole-making device.

FIG. 5 is a side view of a groove-making device that can be substituted for the above-described hole-making device.

[Explanation of symbols]

1 Engine 2 Gear box 3 U-shaped rod 4 Aircraft 7 Wheels 9 Wheels 10 ridges 17 Planted gear box 18 Seedling stand 19 Planting rod 20 Seedling planting device 22 Rolling axis 32 Sliding board

Claims (1)

[Claims] Claim 1: A body 4 consisting of a gear box 2 to which an engine 1 is attached, a U-shaped rod 3 extending rearward from the gear box 2, a planting gear box 17, a seedling stand 18, and a planting rod 19. The machine body 4 is supported from the ground by a pair of front and rear wheels 7 and 9 that straddle the ridge 10, and the seedling planting device 20 is equipped with a wide sliding plate 32 that slides along the upper surface of the ridge 10. The seedling transplanting machine is rotatably attached to the body 4 between the front and rear wheels in a side view inside the U-shaped rod 3 around a rolling shaft 22 in the front and back direction.