JPH0455460Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a drainage ditch forming device for a rice transplanter, which is used by being attached to the float of a rice transplanter, in order to form a drainage ditch in a rice field.

[Conventional technology]

In rice cultivation, in order to speed up the growth of seedlings and improve their survival, the rice fields are drained several times after a while after rice planting. Since this drainage must be done as quickly as possible, drainage ditches were formed at appropriate intervals within the rice fields. In order to form these grooves, traditionally, after rice planting, a ditch digging hoe was used to create the grooves.
Drainage ditches were formed by manual labor by digging the mud between the seedlings. In some cases, trench excavators with engines are also used.

[The problem that the idea attempts to solve]

However, when digging drainage ditches manually using a trench-digging hoe, there is a problem that the larger the area of the paddy field, the more labor and time it takes.
In addition, there was a risk of accidentally damaging the seedlings when digging them up. Furthermore, the drain grooves 15 formed with conventional equipment as shown in FIG.
The drain groove 15 is often steep, and after repeated water supply and drainage, the shoulder 16 collapses and the drain groove 15
In addition, as the shoulder portion 16 collapses, the seedlings 18 near the drainage ditch 15 may also lie down on the drainage ditch 15 side, inhibiting their growth. Furthermore, even with an engine-equipped trench excavator, there are problems in that there is a risk of damaging the seedlings and insufficient drainage, and that the economic burden such as price, fuel cost, maintenance cost, etc. increases.

The present invention was developed based on the above-mentioned circumstances, and is a drainage ditch for rice transplanters that can efficiently form a drainage ditch that does not become filled even after a long period of time and allows for quick drainage with little effort and time. The purpose is to provide a groove forming instrument at low cost.

[Means to solve the problem]

In order to achieve the above object, the drainage ditch forming device for a rice transplanter according to the present invention has a boat-shaped main body that is elongated in the traveling direction in contact with the lower surface of the float of the rice transplanter, and is connected to a pointed prow part and the prow part. The upper end of the inclined side wall of the body is gently curved outward and comes into contact with the float, and the tip of the main body has a curved piece that can be engaged with the tip of the float. In addition, an upright plate with an elastic bending piece that can abut the rear end of the float from the rear is provided at the rear end of the main body.

[Effect]

The drainage ditch forming device for a rice transplanter according to the present invention has a curved piece provided at the tip of the boat-shaped main body that engages with the tip of the float of the rice transplanter, and an upright plate provided at the rear end of the main body. The attached elastic bending piece is attached to the float of the rice transplanter by making use of its elasticity to abut the rear end of the float from behind. In the case of removal, the elastic bending piece is pushed backwards so as not to come into contact with the rear end of the float while being pushed downward, and the locking state of the bending piece to the tip of the float is released.

The pointed-shaped prow of the main body pushes aside muddy cultivated soil, and the trunk, which is continuous with the prow, compacts the cultivated soil to form a drainage ditch. At this time, since the cross-sectional shape of the body is approximately an inverted isosceles trapezoid, the drainage channel is also approximately in the shape of an inverted isosceles trapezoid, and the upper portions of both inclined side walls of the body are gently curved outward to form a float. Since it is in contact with the lower surface, the shoulder of the drain is also gently curved and sloped.

〔Example〕

Hereinafter, the drainage ditch forming device for a rice transplanter according to the present invention will be specifically explained with reference to the drawings. In the present device, a curved piece 3 that bends backward from the upper side is attached to the tip of a main body 1 having a flat upper surface and a boat-shape, and an upright plate 4 is provided upright at the rear end of the main body 1. An elastic bending piece 5 is provided at the upper end, which bends downward on the front side, and the distance from the upright plate 4 becomes wider as it goes downward. The main body 1 consists of a prow portion 6 having a pointed shape and a body portion 7 continuous to the prow portion 6. As shown in FIG. 3, the cross-sectional shape of the body part 7 is approximately an inverted isosceles trapezoid shape, and both side walls 9, 9 continuous with the bottom wall 8 of the body part 7 are inclined so as to widen outward toward the top. side wall 9
Upper wall 1 whose upper end is horizontal and gently curves outward
0 and is in close contact with the lower surface of the float 12 of the rice transplanter 11. Also, float 1
A protruding piece 13 that protrudes forward is provided on the lower surface of the tip of the groove 17 of No. 2.

The proposed device has the above structure, and the rice transplanter 11
To attach the main body 1 to the lower surface of the float 12, first align the upper surface of the main body 1 with the lower surface of the float 12, and then attach the main body 1 to the lower surface of the float 12.
The curved piece 3 extended at the tip of the float 1 is inserted from the front.
It engages with a protrusion 13 protruding from the lower surface of the tip of 2.
Then, if you push up the rear end of the main body 1,
From the state in which the lower end of the elastic bending piece 5 attached to the upright plate 4 contacts the rear end of the float 12 from below,
The elastic bending piece 5 moves upward past the flange 14 at the rear end of the float 12 while being pushed backward by the elasticity of the bending piece 5, and the lower end of the elastic bending piece 5 abuts the flange 14 at the rear end of the float 12 from above, causing the float to float. 12
The device in question is irremovably attached to the device. In addition, when removing the present device from the float 12, by pushing the elastic bending piece 5 backward while pushing it downward, the locking state of the elastic bending piece 5 to the rear end of the float 12 is released, and then the main body 1 is removed. The curved piece 3 can be removed from the protruding piece 13 by moving it forward. Then, when performing rice planting work using the rice transplanter 11, the present device is attached to the lower surface of the float 12 as necessary, and drainage ditch forming work is also performed. in this case,
The muddy cultivated soil pushed apart by the bow part 6 is further pushed laterally by the body part 7, and the cultivated soil that is about to rise upwards is pushed onto the upper part of the gently curved side wall 9 and the lower surface of the float 12. As a result, the drainage groove 15 formed as shown in FIG. 8 is compacted and has a shoulder 16 that is gently curved and sloped. Then, the seedlings 18 are planted on the sides of the drainage ditch 15 immediately after it is formed.

Incidentally, the float 12 may be held from the front by a curved piece 3 attached to the tip side of the bow portion 6 as shown in FIG.

[Effect of idea]

The drainage ditch forming device for a rice transplanter according to the present invention is installed protrudingly at a position corresponding to the rows on the bottom surface of the float as described above, so that drainage ditch forming work can be done at the same time as rice planting work, resulting in significant labor savings. Of course, it is possible to form far more drainage channels than before to allow for faster drainage. In addition, since the body of the proposed device has an inverted isosceles trapezoid shape, and the upper part of the side wall is gently curved outward to contact the lower surface of the float, the drain groove formed by the proposed device The shoulder part is not sharp like the conventional one, but is smoothly curved and sloped.
Therefore, even if used for a long period of time, there is no risk of the drainage ditch being filled up due to the collapse of the shoulder, and rapid drainage can be carried out indefinitely, and there is no risk that seedlings near the shoulder will fall down due to the collapse of the shoulder. This ensures the healthy growth of seedlings.

[Brief explanation of drawings]

Figure 1 is a front view of the drain groove forming device for rice transplanters according to the present invention, Figure 2 is its bottom view, and Figure 3 A is the first
Figure A-A is a cross-sectional view taken along the line A, Figure 3B is Figure 1B-
4 is an enlarged front view of the main parts of the proposed device; FIG. 5 is an enlarged sectional view taken along line C-C in FIG. 2; and FIG. 6 is a front view of a similar example of the proposed device. Figure, 7th
The figure is a front view showing the state of use of the proposed device, Figure 8 is a sectional view of the drainage ditch formed by the proposed device, and Figure 9
Figures A and B are cross-sectional views of drainage ditches formed by conventional equipment. 1... Main body, 3... Curved piece, 4... Upright plate, 5
...Elastic bending piece, 6... Bow section, 7... Torso section, 9
...Side wall, 11...Rice transplanter, 12...Float.

Claims (1)

[Scope of utility model registration request] A boat-shaped main body 1 that is in contact with the lower surface of the float 12 of the rice transplanter 11 and elongated in the direction of movement is composed of a pointed prow portion 6 and a body portion 7 that is continuous with the prow portion 6 and has an inverted isosceles trapezoidal cross section. The upper end of the inclined side wall 9 of the body 7 is gently curved outward to form the float 1.
2, a curved piece 3 extending from the tip of the main body 1 that can be engaged with the tip of the float 12, and an elastic bending piece 5 that can come into contact with the rear end of the float 12 from the rear at the rear end of the main body 1. A drainage ditch forming device for a rice transplanter, characterized in that an upright plate 4 is provided.