JPH06296406A - Paddy rice transplanter - Google Patents

Abstract

PURPOSE:To provide a paddy rice transplanter free from the problems of conventional transplanter, capable of performing the transplantation of seedlings even in a state of deep water without causing the propagation of mud water wave caused by the motion of a float toward the planted seedling row in a paddling work of soil of a paddy field without draining (discharging) water filled in the field. CONSTITUTION:At least one side edge 64 of a float 6A of a paddy rice transplanter 1 is protruded forward relatively to the other side edge 65 to form mud water blocking parts 66,61e. The flow of mud water 86 caused by the forward motion of the float 6A and directing toward the other side edge 64 is inhibited by the blocking parts. Accordingly, in the case of planting seedlings 7 on a water-filled field 8 with the transplanter 1, the flow of the mud water 86 directing toward the other side edge of the float 6A and caused by the forward motion of the float 6A is inhibited with the mud water blocking parts 66, 61e.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a rice transplanter.

[0002]

2. Description of the Related Art Conventionally, for example, it is known that seedlings 70 are planted in a rice field 8 at predetermined intervals using a rice planting machine 1a shown in FIGS.
This rice transplanter 1a includes a rice transplanter main body 2a, a drive device 3a mounted on the rice transplanter main body 2a, and a rice transplanter main body 2a.
A plurality of drive wheels 4a, 4a which are rotatably held by the drive device 3a and which are driven and moved by the drive device 3a in the rice field 8 from one direction (arrow Y1) to the other direction (arrow Y2).
And a planting section 5a for planting the planting seedling 7 from one direction to the other in a predetermined number of rows, and a rice planting machine body 2a
A plurality of floats 6a that are mounted on the rice paddy 8 and are in contact with the surface 83 of the mud layer 82 of the rice field 8 and control the height between the rice transplanter main body 2a and the surface (ground plane) 81 of the base soil layer 80 of the rice field 8.
And consists.

When the seedling 7 is planted by the conventional rice planting machine 1a, the mud under the water surface 85 of the rice field 8 is moved by moving the floats 6a from one direction (arrow Y1) to the other direction (arrow Y2). Bottom 6 of float 6 in contact with layer 82
The mud and water are pushed away by the 3 and the tip 61. Then, the mud and water become muddy water 86 as shown in FIG. 14 and rise up on the water surface 85 of the rice field 8, and as the floats 6 move forward, they are divided into left and right parts of the tip part 61 of the mud and water. Two flows (see arrows Z1 and Z2 in FIG. 12) are undulated toward the ends (the one end 64 and the other end 65).

Here, in the planting work by the rice transplanter 1, the first traveling from one direction to the other is completed, and the traveling from the turning point to the other direction is started. At this time, one of the plurality of floats 6 and 6 is located adjacent to the row of seedlings 70 on which one side end portion 64 has been planted, at a predetermined position, and the muddy water from the tip portion 61 thereof. 86 waving toward the shoot row 70 (Fig. 12)
Arrow Z1).

As shown in FIG. 12, the flow of the muddy water 86 pushes down, tilts, or covers the seedlings 7 of the planted row 70 of seeds.

[0006]

[Problems to be Solved by the Invention]

(1) For this reason, after planting the seedling 7 in which a large number of shoot rows 70 are formed in the entire area of the rice field 8, the rice planting operator is pushed down, tilted, or covered with mud. 7 adjustment to return the position of 7 to the upright position,
It is necessary to manually remove the mud attached to the seedlings and replant the buried seedlings 7 into new seedlings 7 prepared separately. The manual work is time-consuming and troublesome.

Therefore, before planting the seedlings 7 with the rice planting machine 1a, the water accumulated in the rice field 8 in advance is drained (falling) to the outside of the rice field 8 before planting the seedlings 7. This is done by convention. (2) Furthermore, depending on the rice field, it may take 1 to 2 days to prevent mud from rising to the front of the float when planting the seedlings 7.
After sun-drying and adjusting to a predetermined hardness, it is necessary to perform planting work. In addition, even in the case of the above-mentioned sun-drying, since the low place is soft due to the leveling degree of the rice field surface, the planting speed of the seedlings 7 must be reduced. Depending on the degree of the softness, it is impossible to prevent mud fogging only by adjusting the speed. In addition, the work efficiency is lower than that in the sun-drying period and the production cost of rice cultivation cannot be reduced. (3) Further, a part of the fertilizer sprayed in the rice field 8 before the rice planting work is dissolved in the water in the rice field 8, so that it is uneconomical to flow out of the rice field 8 along with the drainage. . (4) Further, when the seedling planting work and the herbicide spraying work are performed at the same time in the rice field 8 after the drainage, if water is poured into the rice field 8 after finishing each of the above-mentioned operations, the water flow at the time of water injection may cause an influence. As the water flow moves from one direction to the other in the rice field 8, the herbicide deviates to the side opposite to the water injection inlet and is not uniformly distributed in the entire area of the rice field 8.

According to the present invention, the muddy water accompanying the advancement of the float during the planting work of seedlings can be performed even in the so-called deep water state without dropping (draining) the water flooded in the rice field in advance during the soil leveling work of the rice field. It is an object of the present invention to provide a rice transplanter that solves the above-mentioned conventional problems in which waves do not propagate toward the planted row of seedlings.

[0009]

A rice transplanter according to the present invention has a main body of a rice transplanter, a drive unit mounted on the main body, a rotatably held by the main body, and a transmission from the drive unit. From the one direction, a plurality of drive wheels that rotate by driving force and travel and move in the rice field from one direction to the other direction, and a seedling for planting that is mounted on the main body and placed on the mounting portion of the main body A planting part that is planted in a predetermined number of rows in the other direction, and is attached to the main body along a straight line extending from the one direction to the other direction in parallel with the straight line and in contact with the ground of a rice field, And a float for controlling the height between the ground contact surface of the rice field and a rice planting machine, wherein the float has at least one end side thereof protruding forward with respect to the other end side, and Also includes a muddy water prevention unit that blocks the flow of muddy water toward the one end. It is characterized in.

The rice transplanter main body serves as a base manufactured in a predetermined shape by a metal frame or a resin frame, for example. The drive unit is used by being attached to the rice transplanter body, and serves as a drive source for the plurality of drive wheels and the planting unit. This drive unit includes, for example, various engines such as a gasoline engine and a petroleum engine, and various missions and clutches for transmitting driving force from the engine to a plurality of drive wheels and a planting unit.

The plurality of drive wheels are rotatably held by the rice transplanter main body, are grounded on a hard soil surface below the ground mud layer in the rice field, and are rotated by the drive force transmitted from the drive unit. It travels in the rice field from one direction to the other. The rice transplanter of the present invention is characterized by a float having a muddy water prevention unit. The float is attached to the rice planting machine body along a straight line that has a predetermined buoyancy and extends from one direction to the other direction in the rice field, and is in contact with the ground of the rice field, and the grounding surface of the rice planting machine body and the rice field. And control the height of. As the float, for example, a slide plate, a hollow metal body, a hollow resin body, or the like having a predetermined buoyancy can be used.

The muddy water preventive portion is such that at least one end portion side of the float projects forward with respect to the other end portion side, and blocks the flow of muddy water toward the one end portion side due to the forward movement of the float. The muddy water prevention unit is integrally or detachably provided on one end side of the float, and extends in the front of the float and extends in the vertical direction (hereinafter referred to as the muddy water prevention plate). Can be used.

Further, as the muddy water preventing portion, it is possible to use one in which the tip end portion of the float is inclined or curved from one end portion side to the other end portion side (hereinafter referred to as muddy water preventing tip portion). In the case of using the muddy water prevention plate, as the float advances, the muddy water that comes into contact with the front of the float which is relatively behind the end side of the muddy water prevention plate and is pushed up is one side by the muddy water prevention plate. Movement (flow) to the end portion side is blocked, and the float flows to the other end portion side. Therefore, muddy water does not affect the planted shoot rows.

When the muddy water prevention plate is formed integrally with the tip portion of the float, it projects forward from the tip portion at least at one end portion side of the float. This muddy water prevention plate has a contact area of a predetermined size that prevents the muddy water generated by the advance of the float from flowing toward one end of the float. The muddy water prevention plate can be used when planting seedlings with a rice transplanter.
With the forward movement of the float, it is possible to prevent the flow of the muddy water by making it wider than the range where the muddy water rises above the water surface of the rice field at the tip portion thereof. Therefore, it is preferable that the muddy water prevention plate has a sufficient area in the forward direction of the float and in the vertical direction of the water surface of the rice field.

The area of the muddy water prevention plate may be, for example, 50 mm to 200 mm above the water surface, 20 mm to 50 mm below the water surface, 150 mm to 300 mm in front of the tip of the float, and behind the tip of the float with respect to the water surface of the rice field. The area can be set to have each dimension of 20 mm to 100 mm. Further, the position for providing the muddy water prevention plate is set near the muddy water generation position, so that the area can be reduced.

The muddy water prevention plate may be integrally formed at the tip of the float during manufacturing. In this case, the muddy water prevention plate can be set in parallel with the forward direction of the float or at a predetermined angle in advance.
For the convenience of manufacturing, it is preferable that the muddy water prevention plate and the float are formed of the same material, for example, a metal material and a metal material, or a resin material and a resin material.

The muddy water prevention plate is manufactured separately from the float, and is detachably attached to the tip of the float, or in a direction parallel to the forward and backward directions of the float, or a predetermined position on the left and right of the fixed position as a center point. It is possible to use the angle, the one that is freely changeable, or the like. In this case,
Depending on the height of the muddy water rising from the surface of the float as it moves forward, and the size and strength of the wavy muddy water,
It is possible to efficiently block the flow of muddy water toward the side edges. Furthermore, the muddy water prevention plate and the float may be made of the same material or different materials, for example, a combination of a metal material and a resin material or a metal material and a resin material.

When the muddy water preventing tip is used as the muddy water preventing portion, as the float advances, the muddy water which relatively contacts the front of the float and is pushed up and rises from one end side. The flow (flow) to the other side end portion side and the movement (flow) to the one side end portion side are blocked along the inclination or the curve toward the other side end portion side. Therefore, muddy water does not affect the planted shoot rows.

The muddy water preventing tip can be set in various manners depending on the purpose, such as the inclination angle, the vertical width dimension, the inclination length dimension, and the curvature radius of the curve. The rice transplanter of the present invention,
It can be applied to walking type or riding type.

[0020]

The float of the rice transplanter according to the present invention has a structure in which at least one end side of the float protrudes forward with respect to the other end side, and the mud which prevents the flow of the muddy water toward the one side end due to the advance of the float. It has a prevention part. And using the rice planting machine, when forming a plurality of shoot rows by planting seedlings in a flooded rice field, first, using the rice planting machine, run from one direction to the other, Planting work is performed. After the planting work on the forward path, the planting work on the return path is performed by traveling from the turning point in the opposite direction from the other direction to one direction. Planting work on the outward path,
It is repeated with the planting work on the return route.

When performing each of the above-mentioned planting operations, the mud and water are pushed away by the tip of the float, which is in contact with the mud layer below the water surface of the rice field, as the float advances.
Then, the mud and water become muddy water and rise up on the water surface of the rice field, waving, and trying to form a flow toward one end of the float, but this muddy water flow is blocked by the muddy water prevention unit.

Therefore, when the rice transplanter of the present invention is used, during the planting work after the first return route, the flow of muddy water due to the advance of the float (to Flow). It should be noted that the flow of muddy water from each tip of the plurality of floats toward the other end (each inner end) facing each other interferes with each other and is attenuated. Therefore, seedlings immediately after being planted between the two floats. Does not affect the above.

[0023]

【Example】

(Example 1) Example 1 of the rice transplanter of the present invention will be described based on FIGS. 1 to 5 by applying it to the case where two rows of seedlings are planted at one time. As shown in FIGS. 1 to 3, the rice transplanter 1 according to the first embodiment includes a rice transplanter main body 2, a drive unit 3 mounted on the rice transplanter main body 2, a drive wheel 4, and a planting unit 5, respectively. Second with first float 6 and muddy water prevention plate 66
It consists of float 6A.

The rice transplanter main body 2 serves as a base portion of the rice transplanter 1, and is a frame structure manufactured in a predetermined shape using a metal pipe. The rice transplanter main body 2 is equipped with the drive unit 3, the drive wheel 4, the planting unit 5, the first float 6, the second float 6A, etc., and the operator operates the rice transplanter 1 and An operation unit 20 for performing a planting operation, a placement unit 21 on which the seedling 7 immediately before planting is placed, and a preliminary placement unit 22 on which the preliminary seedling 7 is placed are formed.

The drive unit 3 is a gasoline engine mounted on the rice transplanter body 2, and a drive wheel (not shown) for transmitting the drive force of the engine to the drive wheels 4, 4 and the planting unit 5, respectively. Missions, seedling plant missions and their clutches. The plurality of drive wheels 4 and 4 are attached to both ends of a shaft portion 40 rotatably held in the rice transplanter main body 2 and arranged on both sides of the rice transplanter main body 2, respectively. The drive wheels 4, 4 sink into the mud layer 82 in the rice field 8,
It is grounded on the surface 81 of the solid base soil layer 80 below the mud layer 82, and is rotated by the driving force transmitted from the drive unit 3 to move in the rice field 8 from one direction (arrow Y1) to the other direction (arrow Y2). The vehicle travels on the outward path and the return path from the other direction (arrow Y2) to the one direction (arrow Y1).

The planting section 5 is actuated by the driving force transmitted from the driving section 3 to mechanically remove the seedlings 7 placed on the seedling placing section 20 of the rice transplanter main body 2 into a mud layer 82 in the rice field 8. Further, it has a planting claw member 50 for performing planting work at a predetermined interval. The rice transplanter 1 of the first embodiment is characterized by the second float 6A. For the sake of explanation, the first float 6 and the second float 6A
The common points with and will be explained first.

Each of the floats 6 and 6A has a long sled-shaped float body 60 made of a hollow resin body having buoyancy, a front end mounting arm 61a and a rear end mounting arm 62a, and a sensor (not shown). And an unillustrated control device (hydraulic actuation device) that is linked to the sensor. Each float main body 60 is attached to the rice transplanter main body 2 along the straight line extending from one direction to the other direction by both attachment arms 61a and 62a in parallel with the straight line, and is held so as to be movable up and down relatively. It

One of the front end mounting arm 61a and the rear end mounting arm 62a is connected to the front end 61 and the rear end 62 of the float main body 60, and the other is connected to the lower portion of the rice transplanter main body 2. The sensor is used as a base soil layer 8 for the drive wheels 4 and 4 when planting seedlings.
The height from the surface 81 (ground plane) of 0 to the rice transplanter main body 2 is detected, and a detection signal is output to a control device (hydraulic actuation device) not shown. The control device has a function of controlling the amount of vertical movement for holding the rice transplanter main body 2 at an appropriate position based on a detection signal from the sensor. The float main body 60 is attached to the rice transplanter main body 2 along a straight line extending from one direction to the other direction in parallel with the straight line.

That is, when the bottom portion 63 of the float main body 60 is in contact with the surface 83 of the mud layer 82, the float main body 60 controls the up-and-down movement amount of the rice transplanter main body 2 based on the operation of the sensor and the control device, and the rice transplanter main body is controlled. 2 base soil layer 80
The surface 81 is held at a predetermined height above the surface 81 (ground plane). Thereby, when the seedling 7 is planted by the planting claw member 50 of the planting section 5, the planting depth is properly maintained.

As shown in FIGS. 4 and 5, the second float 6A has a muddy water prevention plate 66 in addition to the above structure. The muddy water prevention plate 66, as shown in FIG.
5 is arranged so as to stand upright substantially vertically with respect to 5, and projects forward from the tip 61 of the float body 60 and is integrally formed with one end 64 of the float body 60. Further, the area of the muddy water prevention plate 66 exposed above the water surface 85 of the rice field 8 is set to be wider than the area immersed below the water surface 85.

The muddy water prevention plate 66 is used for the float body 60.
Is integrally fixed to the tip portion 61 of the. Muddy water prevention plate 6
6 is a plate having a thickness of 3 mm, a maximum vertical width of 100 mm, and a maximum front-rear length of 250 mm. The reason for this is that the present inventor, when planting the seedlings 7 using the rice transplanter 1, along with the advance of the float main body 60,
As a result of actually measuring the rising height and the rising distance of the muddy water generated at the tip portion 61, the rising height of the muddy water is about 5 to 8 cm, and the rising distance of the muddy water is about 15 to 18 cm.
It turned out to be cm.

Therefore, setting the range of the set numerical value wider than the measured numerical value is effective in preventing the muddy water swelling and the undulation of the muddy water 86 due to the swelling from affecting the adjacent shoot row 70. Was applied to the muddy water prevention plate 66 of Example 1. When the seedlings 7 are planted in the flooded rice field 8 using the rice transplanter to form a plurality of shoot rows 70, first, the rice transplanter 1 is used to travel from one direction to the other. Then, the planting work on the outward route is performed. After the planting work on the forward path, the planting work on the return path is performed by traveling from the turning point in the opposite direction from the other direction to one direction. In the rice transplanter 1 of the first embodiment, the shoot row 7 in which the second float 6A having the muddy water prevention plate 66 has been planted is arranged in the traveling direction.
It is operated as if traveling in the left column of 0. As a result, at the position where the muddy water prevention plate 66 of the second float 6A faces the shoot row 70, the forward planting operation and the backward planting operation are repeated.

When performing the above-mentioned planting work, the first
By the advance of the float 6 and the second float 6A, each float main body 60 in contact with the mud layer 82 below the water surface 85 of the rice field 8
The bottom portion 63 and the tip portion 61 of the slab push away mud and water. Then, as shown in FIG. 4, the mud and water become muddy water 86, rise up from the water surface 85, undulate, and try to form a flow toward the shoot row 70. However, since the muddy water prevention plate 66 having a larger area than the swelling area of the muddy water 86 is formed on the second float 6A at a position adjacent to the shoot row 70 with a predetermined space therebetween,
The flow of muddy water 86 is blocked by the muddy water prevention plate 66 (see FIG. 5).

Therefore, when the rice transplanter 1 of the first embodiment is used, during the planting work after the first return route, the flow of the muddy water 86 due to the forward movement of the second float 6A with respect to the planted row 70 of seeds. It is almost unaffected. The flow of the muddy water 86 from each tip 61 of each float body 60 of the first float 6 and the second float 6A to each other side end 65 (each inner end) that faces each other (see arrow Z2 in FIG. 5). ) Interfere with each other and are attenuated, so that they do not affect the seedling 7 immediately after planting between the first float 6 and the second float 6A.

In the first embodiment, when the so-called seedling 7 is planted in two rows, the case where the second float 6A of the two floats has the muddy water prevention plate 66 has been described, but the present invention is not limited to this. However, the muddy water prevention plate 66 similar to that of the second float 6A is provided on the first float 6 as well.
And can be used as a symmetrical shape with the second float 6A. In this case, the rice transplanter 1 travels toward the traveling direction in the left row of the shoot row 70 in which the second float 6A having the muddy water prevention plate 66 has been planted, and the muddy water prevention board 6
The first float 6 with 6 is operated so as to run in the right row of the planted row of shoots 70. As a result, at the position where the muddy water prevention plate 66 of either the second float 6A or the first float 6 faces the seedling row 70, the planting work for the forward path and the planting work for the return path are repeated.

(Embodiment 2) Embodiment 2 of the rice transplanter of the present invention
Will be described with reference to FIG. Example 2 rice transplanter 1A
As shown in FIG. 6, the rice transplanter 1 of the first embodiment is
The rice transplanter 1 has the same structure as the rice transplanter 1 according to the first embodiment except that the third float 6B having the muddy water prevention plate 66 is added to the structure.

That is, the rice transplanter 1A has a structure including a second float 6A and a third float 6B, which are arranged on both sides of the first float 6 with a predetermined gap therebetween. The third float 6B has a symmetrical shape with the second float 6A, and like the second float 6A, a muddy water prevention plate 66 is integrally formed on the one side end 65 side of the float body 60.

This rice transplanter 1A runs in the rice field 8 on the outward path from one direction (arrow Y1) to the other direction (arrow Y2) and on the return path from the other direction (arrow Y2) to one direction (arrow Y1). Plant the seedlings 7. And rice planting machine 1
A is the second float 6 when traveling after the return route.
The planting operation of the seedlings 7 can be performed in a state in which one of A and the third float 6B is arranged in the planted seedling-shaped row 70 in a parallel position at a predetermined interval.

As described above, in the case of the rice transplanter 1A of the second embodiment, the muddy water prevention plates 66 are provided on both sides of the first float 6, respectively.
Since the second float 6A and the third float 6B having the above are arranged, there is an advantage that the rice planting machine 1A can be freely oriented when the rice planting machine 1A is running with respect to the planted seedling row 70. That is, when the rice transplanter 1A is used, the muddy water preventive plate 66 of either one of the second float 6A and the third float 6B is used as the shoots regardless of whether the rung is run along the left or right position of the shoot row 70. Since the outward planting work and the returning planting work are repeated at the position facing the row 70, the shoot row 70 is not affected by muddy water.

(Example 3) Example 3 of the rice transplanter of the present invention
Will be described with reference to FIG. The rice transplanter 1C of the third embodiment shown in FIG. 7 has a muddy water prevention plate 66 for the float 6C.
The configuration is such that c can be detachably attached. That is, the float 6C used in the rice planting machine 1C includes a float main body 60c having two mounting holes 610 formed at the tip 61, and the mounting holes 6 of the float main body 60c.
10, an interposing member 90 having two bolt holes 91 formed coaxially with 10 and two planting bolts 93 perpendicular to the axis of the bolt hole 91, and 2 inserted into each planting bolt 93 of the interposing member 90. A plate-shaped muddy water prevention plate 66c having individual bolt holes 67, a first fixing bolt 95 inserted into each mounting hole 610 of the float body 60c, and a first nut 96 screwed to the first fixing bolt 95. When,
It comprises a second nut 94 screwed to the planting bolt 93.

In the rice transplanter 1C of the third embodiment, the interposing member 90 is attached to the mounting hole 610 of the float body 60c by the first fixing bolt 95 and the first nut 96, if necessary. For 90, the muddy water prevention plate 66c by the planting bolt 93 and the second nut 94
After mounting, the planting work of the seedlings 7 is performed as in the first embodiment.

Therefore, by preparing a plurality of muddy water prevention plates 66c having various shapes and areas in advance, the muddy water prevention plates 66c can be replaced and used according to the purpose. (Example 4) Example 4 of the rice transplanter of the present invention will be described with reference to FIG.

A rice transplanter 1D of the fourth embodiment shown in FIG.
Is a configuration in which the muddy water prevention plate 66d with respect to the float 6D is adjusted in advance to a predetermined inclination angle with respect to its traveling direction, and the spacing distance to the planted seedling rows 70 is adjustable. is there. That is, the float 6D used in the rice transplanter 1D is inserted into the float main body 60d having the planting bolt 97 vertically provided on the tip 61, the nut 98 screwed to the planting bolt 97, and the planting bolt 97. And a muddy water prevention plate 66d having a long hole 68 formed in the upper end portion 660.

In the rice transplanter 1D of the fourth embodiment, the inclination angle of the muddy water prevention plate 66d with respect to the traveling direction of the float 6D is set to a target value by the planting bolt 97 and the nut 98 of the float body 60d as required. It is possible to set and set the interval distance of the muddy water prevention plate 66d to the seedling-shaped row 70 that has been planted to a target value, and various uses can be made.

(Embodiment 5) Embodiment 5 of the rice transplanter of the present invention
Will be described with reference to FIGS. The rice planting machine 1E of the fifth embodiment shown in FIGS. 9 and 10 is the same as the second embodiment except that a pair of symmetrical floats 6E and 6E each having a muddy water preventing tip portion 61e are used as the muddy water preventing portion. It has the same configuration as the rice transplanter 1A used in.

That is, the muddy water prevention tip portion 61e formed on each float 6E used in the fifth embodiment is inclined from the one side end portion 64 side of the float body 60e to the other side end portion 65 side at an inclination angle Θ25 to 45. (See FIG. 10), one end 6
The fourth side projects forward with respect to the other-side end portion 65 side. The muddy water prevention tip portion 61e is further curved upward with a predetermined radius of curvature from the bottom portion 63 of the float body 60e toward the front of the tip, like the tip portion of the sled. The vertical width dimension h of the muddy water prevention tip portion 66e is set to about 100 mm, and the inclined length dimension L is set to about 320 mm. The inclination angle Θ, the vertical width dimension h, and the inclination length dimension L are not limited to the above numerical values, and can be set for various purposes as necessary.

According to the rice transplanter 1E of the fifth embodiment, the muddy water 86 generated by the advance of each float 6E at the time of planting the seedlings 7 after the first return route is the muddy water preventing tip portion 66e.
The inclined portion guides the flow to the other end 65 side of the float main body 60e and blocks the flow toward the planted shoot row 70 on the one end 64 side (see FIG. 10).
For this reason, the planted shoot row 70 is hardly affected by the flow of the muddy water 86.

Since the muddy water preventing tip portion 66e is curved upward with a predetermined radius of curvature from the bottom portion 63 of the float toward the front end of the float, the muddy water 86 is guided to the other end portion 65 side by the inclined portion. The resistance of the flow of time can be reduced, and the muddy water 86 can be smoothly guided in a direction that does not affect the shoot row 70. (Sixth Embodiment) A sixth embodiment of the rice transplanter of the present invention will be described with reference to FIG.

Rice planting machine 1F of Embodiment 6 shown in FIG.
Is the muddy water prevention plate 66 of the first embodiment as a muddy water prevention unit.
And the float 6F including the muddy water prevention tip portion 66e of the fifth embodiment. Therefore, rice planting machine 1
When planting seedlings 7 after the first return route using F,
The muddy water 86 generated along with the advance of the float 6F causes the muddy water 86 to flow toward the seedling row 70 by both the muddy water prevention plate 66 and the muddy water prevention tip portion 66e more than in the case of the first and fifth embodiments. , Can be blocked more effectively.

[0050]

According to the rice transplanter of the present invention, at least one end side of the float projects forward with respect to the other end side, and the flow of the muddy water toward the one end side due to the forward movement of the float is prevented. It has a muddy water prevention unit. Therefore, when seedlings are planted in a flooded rice field using the rice transplanter, the muddy water flowing toward one end of the float due to the forward movement of the float is blocked by the muddy water prevention unit. That is, the muddy water rising from the water surface due to the advance of the float does not flow toward the planted row of seedlings, and each seedling forming the row of shoots is pushed down by the flow of the mud, tilted, or covered with mud. There is no chance of being broken. The size of the seedling used for the planting is not limited, and the effect can be obtained for planting work such as a seedling of about 10 days after germination or a seedling of about 15 days after germination. .

Therefore, after planting the seedlings, the rice planting operator does not have to manually perform the conventional manual work for returning the seedlings affected by the flow of the muddy water to the original planting state. Working time can be saved by increasing the annoyance and planting speed. In addition, since the muddy water prevention unit does not affect the muddy water in the row of rice fields that have been filled with water, it is not necessary to drain (fall) the water that had been spread over the rice fields outside the fields when planting the seedlings. Therefore, the herbicide spraying process, which is conventionally performed in a separate process, can be performed simultaneously with the seedling planting process (so-called simultaneous spraying), and the conventional separate process can be omitted.

As described above, according to the rice planting machine of the present invention, the production cost of rice production can be reduced by the extra work.
It can be reduced.

[Brief description of drawings]

FIG. 1 is a front perspective view showing a usage state of a rice transplanter of Example 1. FIG.

FIG. 2 is a side view showing a main part of the rice transplanter according to the first embodiment.

3 is a partial cross-sectional side view showing a part of FIG. 2 in section.

FIG. 4 is a partially enlarged side view showing a part of FIG. 2 in an enlarged manner.

5 is a plan view showing a usage state of the rice transplanter in FIG. 1. FIG.

FIG. 6 is a plan view showing a usage state of the rice transplanter of the second embodiment.

FIG. 7 is a perspective view showing a main part of a rice transplanter according to a third embodiment.

FIG. 8 is a perspective view showing a main part of the rice transplanter of Example 4.

FIG. 9 is a perspective view showing a main part of a rice transplanter according to a fifth embodiment.

FIG. 10 is a plan view showing a usage state of the rice transplanter of the fifth embodiment.

FIG. 11 is a perspective view showing a main part of the rice transplanter according to the sixth embodiment.

FIG. 12 is a front perspective view showing a state of use of a conventional rice transplanter.

13 is a side view showing the rice transplanter in FIG. 12. FIG.

FIG. 14 is a partially enlarged side view showing a part of FIG. 13 in an enlarged manner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rice transplanter 2 ... Rice transplanter main body 3 ... Drive part 4 ... Drive wheel 5 ... Planting part 50 ... Planting nail part 6 ... 1st float 6A ... 2nd float 6B ... 3rd
Float 60 ... Float body 63 ... Float bottom surface 61 ... Tip part 61a ... Tip side connecting arm 62 ... Rear end part 62a ... Rear end side connecting arm 64 ... One side end 65 ... Other side end 66 ... Muddy water prevention plate 61e ... Muddy water prevention tip 7 ... Seedling 70 ... Planted seedling row 8 ... Paddy field 80 ... Base soil layer 81 ... Surface of base soil layer (ground plane where the drive wheel contacts the ground) 82 ... Mud layer 83 ... Surface of mud layer (float) Ground plane where the bottom is grounded) 84 ... Water layer 85 ... Surface of water layer 86 ... Muddy water

Claims (1)

[Claims] 1. A rice transplanter main body, a drive unit attached to the main body, a rotatably held by the main body, and a drive force transmitted from the drive unit to rotate the rice in one direction in a rice field. From the one direction to the other direction, a plurality of drive wheels that travel from one direction to the other direction and seedlings for planting mounted on the mounting portion of the main body are planted from the one direction to the other direction with a predetermined number of rows. The planting part and the straight line extending from the one direction to the other direction are mounted on the main body in parallel with the straight line and are in contact with the ground of the rice field to control the height between the main body and the ground contact surface of the rice field. And a rice transplanter comprising the float, wherein the float has at least one end portion side thereof protrudes forward with respect to the other end portion side, and the mud flows toward the one side end portion due to the advance of the float. Rice planting machine characterized by having a muddy water prevention unit that prevents