JPH07327428A - Float of seedling planting machine - Google Patents

Abstract

PURPOSE:To meet various conditions such as hardness of a field and improve the leveling effect and the unevenness detection effect by integrating or separating the motions of a central sensor float and side floats placed at both sides of the sensor float. CONSTITUTION:A seedling planting apparatus is attached to the rear part of a mobile vehicle in a state vertically movable with a driving apparatus. The height of the seedling planting apparatus from the mud surface is maintained to constant level by a sensor float 10a positioned at the center of the seedling planting apparatus to actuate the driving apparatus according to the vertical motion of the tip end of the sensor float. A pair of right and left side floats 10b, 10b are positioned at both sides of the sensor float 10a in a state to enable vertical motion of the tip ends. The vertical motion of the side floats 10b, 10b is selectable between a mode to move integrally with the sensor float 10a and a mode to move independent of the motion of the sensor float.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is used for a seedling planting machine for paddy fields in multi-row planting.

[0002]

2. Description of the Related Art A seedling planting machine for paddy fields capable of transplanting four or more seedlings in one stroke has a sensor float arranged in the center under a gear box of a seedling plant, and a pair of side floats on the left and right of the sensor float. , And the rear part of each float is rotatably attached to the gear box along the horizontal axis. When each float slides on the mud surface, its tip swings up and down to smooth the slide, and when the tip of the sensor float moves up and down more than necessary, the drive device is activated by that signal. The planting device moves up and down so that the planting device is kept at a certain height above the mud surface.

[0003]

When the side float moves up and down independently with respect to the sensor float, when the field (mud) is soft, the side float moves up and down too much and the ground is leveled by this. The mud surface may become wavy, and if these are fixed, the whole float floats up in the lump when the side float passes over the lump of soil excavated by the wheel in a hard field. As a result, the leveling performance may be deteriorated and the sensor float may give a false impression.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a seedling planting device 2 is attached to a rear portion of a traveling vehicle body 1 so as to move up and down by a drive device 17, and the top and bottom of a tip end portion of A sensor float 10a that keeps the height of the seedling planting device 2 from the mud surface constant by moving the drive device 17 is arranged in the center of the seedling planting device 2 and has a pair of left and right side floats 1.
0b and 10b are provided so that the tip portions thereof can move up and down on both sides of the sensor float 10a, and the left and right side floats 10b and 10b are selected as the sensor float 10a and the vertical movement independent of the sensor float 10a. The float of a seedling planting machine is provided so that it can be installed.

[0005]

In the seedling planting machine constructed as described above, when the mud of the paddy field is soft, the pair of side floats 10b, 10b are fixed to the central sensor float 10a so that they are united vertically. It is used so that it can be moved. Here, the respective floats 10a, 10b, 10b slide on the mud surface to level the surface evenly, and the seedlings are transplanted to this leveled site. When the seedling planting device 2 goes up from the mud surface, the tips of the respective floats 10a, 10b, 10b go down, and when this exceeds the limit, the drive device 17 is activated by the signal from the sensor float 10a and the seedling planting device 2 Goes down. On the contrary, when the seedling planting device 2 approaches the mud surface, the tip of each float 10a, 10b, 10b goes up, and the drive device 17 pulls up the seedling planting device 2 by the signal of the sensor float 10a. In this way, the seedling planting device 2 is kept at a constant height above the mud surface and the seedling planting depth becomes uniform.

When the mud in the paddy field is hard, the pair of side floats 10b, 10b is the central sensor float 1.
It is used so that it can move up and down independently of 0a. Here, the wheels 5 and 6 of the traveling vehicle body 1 excavate mud and the side floats 10b and 10b may pass over the lump, but the independent side floats 10b and 1b
0b moves up and down by pushing it up and down independently.

[0007]

As described above, according to the present invention, the central sensor float 10a and the left and right side floats 10a and 10b are provided.
b and 10b can be used separately to move up and down independently or to move up and down independently, so use them properly according to the hardness and softness of mud in paddy fields, etc. Control of the vertical movement of the planting device can be obtained.

[0008]

Embodiments of the present invention will be described below. Figure 1
As described above, the seedling planting device 2 is attached to the traveling vehicle body 1 by a pair of upper and lower links 3 to form a seedling planting machine. Running car body 1
Includes a pair of front wheels 5 and rear wheels 6 driven by the power of the engine 4. In the seedling planting device 2, the gear box 7 in the central portion, the seedling mounting table 8 which is tilted forward and is reciprocally driven left and right on the gearbox 7, and the tip is vertically swung in a long oval guide to descend seedlings. A seedling planting rod 9 and a float 10 are provided which pass through the rear end of the mounting table 8 and take out the seedlings thereon.

Five seedling planting rods 9 are arranged side by side.
It is a seedling planting device 2 for row planting. The float 10 is composed of a central sensor float 10a and a pair of left and right side floats 10b and 10b, and the rear portion of each float 10 is a horizontal axis 11.
It is rotatably attached to the gear box 7 and swings around the gear box 7 so that each tip can move up and down. A bar 12 extends from the center of the gear box 7 to the front, and a waist-folding link 13 is provided between the tip of the bar 12 and the tip of the sensor float 10a.
Both ends of the sensor float 10a are attached to prevent the sensor float 10a from hanging down. Similarly, waist folding links 14 and 14 are attached to the tip of the gear box 7 and the tip of each of the side floats 10b and 10b.

The ends of the links 3 and 3 are attached to the traveling vehicle body 1 by the horizontal shafts 15 and 15, and the mounting frame 16 at the rear end is moved up and down by the rotation around the axis. The gear box 7 is attached to the attachment frame 16. The drive device 17 is composed of a hydraulic device composed of a cylinder 17a and a piston 17b, both ends of which are attached to the traveling vehicle body 1 and the upper link 3, respectively, and oil discharged by a pump (not shown) enters the cylinder 17a. When fed, the piston 17b is pushed out, the links 3 and 3 rotate counterclockwise, and the seedling planting device 2 is pulled up. When the oil in the cylinder 17a is drained, the piston 17b is pulled back and the seedling planting device 2 is lowered. Bar 1
A valve rod 19 extending upward from the tip of the sensor float 10a is inserted into a valve box 18 attached to the valve 2 to form a switching valve. Then, when the valve rod 19 is pushed into the valve box 18, the oil discharged from the pump flows into the cylinder 17a, and when it is pulled down, the oil in the cylinder 17a returns to the tank. As is well known, the above-mentioned movement of the valve rod 19 is performed by the vertical movement of the tip of the sensor float 10a and the lever operation of the operator.

As shown in FIGS. 2 and 3, the bracket 20
Is fixed to the front part of the sensor float 10a, and the center of the horizontal rod 21 is rotatably attached by a pin 22 in the front-rear direction. Brackets 23, 23 are fixed to their respective tips, and pins 24, 24 fixed thereto are inserted into long holes 21a, 21a at the lateral ends of the horizontal rod 21, and left and right side floats with respect to the central sensor float 10a. 10b, 10
b moves up and down in a seesaw state.

When the center of the pair of left and right L-shaped claws 25, 25 is attached to the horizontal rod 21 by the pins 26, 26 and pulled by the springs 27, 27, the lower ends of the claws 25, 25 are on the upper surface of the sensor float 10a. The horizontal rod 21 is prevented from swinging around the pin 22 due to the contact. Wire 28,2
8 end is attached to the lateral end of each claw 25, 25,
When the lever 29 (FIG. 1) is operated, the wires 28, 28
Is pulled and the claws 25, 25 rotate like the chain line in FIG. 3,
The lower ends of the pawls 25, 25 are separated from the soil surface of the sensor float 10a, and the horizontal rod 21 is free to swing around the pin 22. When the lever 29 is returned, the pawls 2 are moved by the springs 27, 27.
5, 25 are returned, and the horizontal rod 21 becomes the sensor float 10a.
Fixed to.

Sensor float 10a and side float 1
The horizontal rods connecting 0b and 10b may be left and right independently. A device for making the operation of the sensor float 10a and the valve rod 19 blunt or sensitive depending on the hardness of the mud is sometimes used, but the operation of the wires 28, 28 described above is referred to as sensitivity adjustment. Can be linked to.

There is one called auto-rolling, which keeps the seedling planting device 2 always horizontal by rotating the seedling planting device 2 around a longitudinal axis by a drive device when the traveling vehicle body is tilted laterally. , Its operation and release can be selected. By applying the present invention to the above device, the left and right side floats 10b and 10b freely move up and down when the auto-rolling is operated, and the side floats 10b and 10b are integrated into the sensor float 10a when the auto-rolling is not operated. Can be done.

The traveling vehicle body 1 is provided with a sensor for detecting the inclination in the front-rear direction. When the traveling vehicle body 1 leans forward and upward, the side floats 10b, 10b are automatically integrated with the sensor float 10a, and at other times. It is possible to allow the side floats 10b and 10b to freely swing up and down. As shown in FIGS. 4 and 5, the central sensor float 10a has a shape in which the central rear part is cut out when viewed from above, and one seedling planting rod 9 transplants the seedlings in the cutout part 30. it can. At this time, a downwardly projecting portion 31 is provided on the bottom surface in front of the notch portion 30, and groove portions 32, 3 which are located above and below the bottom surface on the left and right of the protruding portion 31.
2 is provided. When this sensor float 10a slides on the mud surface, the mud in the central part is pushed down more than the other to collect water, and the seedling planting rod 9 inserts the seedling 33 into the mud face in the puddle. When you get out of the mud, it is washed with the water to prevent the seedlings from being taken home.

[Brief description of drawings]

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

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

FIG. 3 is a further enlarged front view of a part thereof.

FIG. 4 is a plan view of the sensor float.

FIG. 5 is a side view thereof.

FIG. 6 is a front view taken along the line AA.

FIG. 7 is a cross-sectional view of the mud on which the sensor float glides.

FIG. 8 is an operation diagram thereof.

[Explanation of symbols]

 1 traveling vehicle 2 seedling planting device 10a sensor float 10b side float 17 drive device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeyuki Ouchi, No. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. (72) Takashi Suzuki, No. 1 Yakura, Ito-gun, Ehime-gun Company Technology Department

Claims (1)

[Claims] 1. A seedling planting device 2 is attached to a rear part of a traveling vehicle body 1 so as to move up and down by a drive device 17, and the drive device 17 is operated by the vertical movement of a tip end to operate the mud surface of the seedling planting device 2. A sensor float 10a that keeps the height from above constant is arranged in the central part of the seedling planting device 2, and a pair of left and right side floats 10a.
b and 10b are provided so that the tip portions thereof can move up and down on both sides of the sensor float 10a, and the left and right side floats 10b and 10b are selected from the sensor float 10a and the vertical movement independent of the sensor float 10a. A float for a seedling planting machine, which is provided so that it can be used.