JP2014064474A - Ground making float for rice field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ground making float for a rice field working machine, which is enabled to perform the planting satisfactorily even with a width corresponding to the whole ridge by suppressing still more the adverse effect on the adjacent ridge due to a mud push.SOLUTION: Wave preventing plates 30 for suppressing the diffusion of a mud wave to the transverse outsides of a ground making member 20 are arranged at such a spacing d from transversely outermost side end edges 21b of the ground making member 20 as to allow the mud wave established according to the progress of the ground making member 20 to pass to the rear side, and are made longer than the longitudinal length at the transversely outermost side end edges 21b of the ground making member 20.

Description

  The present invention relates to a leveling float of a paddy field machine provided with a leveling body having a lateral width corresponding to the entire strip.

  As the leveling float of this kind of paddy field machine, it has a structure with a muddy water guiding part for guiding muddy water on the field surface on the upper surface of the leveling body with a width corresponding to the whole strip, and on the upper surface of the leveling body. What provided the rising wall body for suppressing that the muddy water which got up flows into the adjacent strip side from a horizontal end part is known (patent document 1).

JP 2010-172283 (paragraph numbers [0021] [0066], FIG. 3, FIG. 4, FIG. 5, FIG. 16)

As described above, in the case of using a leveling body having a horizontal width over the entire strip, the leveling body passing trace is reduced compared to the structure using the leveling body divided into a plurality of parts in the horizontal width direction, which is good It is easy to form a leveling mark. On the other hand, the problem that the amount of mud pushing due to the leading edge of the leveling body increases is likely to occur, but the structure shown in Patent Document 1 is configured to guide muddy water to the upper surface side of the leveling body. As a result, a large amount of muddy water in front of the leveling body flows in the left and right lateral directions to reduce the possibility of adversely affecting adjacent existing seedlings. In addition, in the case where the horizontal end of the leveling body is provided with a rising wall body, it also prevents the muddy water flowing on the upper surface side of the leveling body from flowing from the horizontal end to the adjacent strip side. It is useful in that it can reduce the adverse effects on
However, even in this structure, mud pushing at the leading edge of the leveling body may increase due to the change in the ground posture of the leveling body, the depth of subsidence, or the influence of the vehicle speed. In such a case, it can be supported to some extent by the above-mentioned climbing to the upper surface side or the flow stop function at the rising wall body, but if it becomes too much, it will move to the lateral side of the muddy water pushed by the front edge of the leveling body There is a possibility that the flow may not be restrained and may flow to the adjacent strip side, and there is room for improvement in this respect.

  The purpose of the present invention is to provide a leveling float for a paddy field work machine that is more likely to be planted well by further suppressing the adverse effects on adjacent strips caused by mud pushing while using a leveling float having a width corresponding to the entire length. It is to provide.

The technical means taken in the leveling float of the paddy field work machine of the present invention in order to solve the above-mentioned problems are as follows.
[Solution 1]
The invention according to Solution 1 includes a leveling body having a width corresponding to the entire strip, and a wave breaker plate that suppresses diffusion of mud waves laterally outward of the leveling body, In addition, between the lateral outermost edge of the leveling body is disposed at a predetermined interval to allow the passage of mud waves generated with the progress of the leveling body to the rear side, and It is formed longer than the length in the front-rear direction at the lateral outermost edge of the leveling body.

[Operation and effect of invention according to Solution 1]
According to the above solution 1, the amount of mud pushing in the leveling body having a horizontal width over the entire strip is increased, and the amount of mud waves that flow laterally outward along the front edge of the leveling body is reduced. Even if it increases, it is possible to flow mud waves that have reached the lateral outermost edge of the leveling body to the rear side through a predetermined interval formed between the lateral outermost edge of the leveling body and the wave shield. Become.
Therefore, it is possible to reduce the possibility that mud waves that flow laterally outward along the front edge of the leveling body will flow over the existing seedling side beyond the location where the wave shield is present, and to reduce adverse effects on adjacent strips. There are advantages.

[Solution 2]
According to the configuration of the invention relating to the solving means 2, the front end portion of the wave breaker plate is arranged to be positioned on the front side of the front end portion near the lateral outermost end edge of the leveling body.

[Operation and effect of invention according to Solution 2]
According to the solution 2, since the front end portion of the wave breaker plate protrudes further forward than the front end of the lateral outermost edge of the leveling body, mud flows laterally outward along the front edge of the leveling body. Even when the amount of waves is large, there is an advantage that it is possible to further reduce the possibility that mud waves will flow to the adjacent seedling side beyond the location where the wave shield is present, and to reduce the adverse effects on the adjacent strips.

[Solution 3]
According to the configuration of the invention relating to the solving means 3, the rear end portion of the wave breaker plate is disposed so as to be located rearward of the rear end portion near the lateral outermost end edge of the leveling body.

[Operation and effect of invention according to Solution 3]
According to the solution 3, since the rear end portion of the wave breaker plate protrudes rearward from the rear end of the horizontal outermost edge of the leveling body, the horizontal outermost edge of the leveling body and the wave breaker plate It is possible to guide the flow direction of the mud waves that flow backward through a predetermined interval between and to the rear side, and the flow of mud waves toward the rear tends to diffuse to the adjacent strip side. There is an advantage that can be suppressed.

[Solution 4]
According to the configuration of the invention relating to the solution means 4, the mounting position of the wave breaker can be adjusted in the perspective direction, the front-rear direction, or the vertical direction along the lateral width direction with respect to the lateral outermost end portion of the leveling body. It is configured.

[Operations and effects of invention according to Solution 4]
According to the solution 4, the relative position of the wave breaker plate with respect to the leveling body is adjusted so that the wave breaker plate is further forward, rearward, up or down, or a more appropriate position such as adjustment of a predetermined interval width. There is convenience that can be set and used.

It is a whole side view showing a riding type rice transplanter. It is a whole top view showing a riding type rice transplanter. It is a side view which shows a leveling float. It is a top view which shows a leveling float. It is a rear view which shows a leveling float. It is a bottom view which shows a leveling float. It is the VII-VII sectional view taken on the line in FIG. It is the VIII-VIII sectional view taken on the line in FIG. It is the IX-IX sectional view taken on the line in FIG. It is the XX sectional view taken on the line in FIG. It is the XI-XI sectional view taken on the line in FIG. It is a disassembled perspective view which shows the attachment location of a wave shield. It is a side view of the leveling float in another embodiment. It is a disassembled perspective view which shows the attachment location of the wave shield in another embodiment.

〔overall structure〕
A riding type rice transplanter as an example of a paddy field working machine will be described.
As shown in FIGS. 1 and 2, the riding type rice transplanter is provided with a prime mover 4 having an engine 3 or the like at the front of a traveling machine 1 equipped with front and rear wheels 11 and 12 as propulsion wheels. 4 is provided with a steering portion 5 having a steering handle 5A, a driver's seat 5B, and the like. A four-row seedling planting device 7 is mounted on the rear side of the traveling machine body 1 through a lifting link mechanism 6 so as to be movable up and down.

The seedling planting device 7 includes a seedling placing table 8 on which four mat-like seedlings can be placed, a planting transmission case 9 in a front-rear posture positioned below the seedling placing table 8, and a planting transmission case 9 And a seedling planting mechanism 10 mounted on the left and right of the rear end portion of the rear end, and a predetermined amount of seedlings are taken out from the seedling placing base 8 that reciprocally moves left and right by the seedling planting mechanism 10 and planted in a field scene. It is configured as follows.
The seedling planting device 7 is equipped with a leveling float 2 that can swing up and down around the rear fulcrum x with respect to the planting transmission case 9. It is configured to plant seedlings while leveling the mud surface.

[About leveling float]
The leveling float 2 will be described.
As shown in FIGS. 3 and 4, the leveling float 2 includes a leveling body 20 having a lateral width L corresponding to the planting width of the total number of planting strips, and a wave provided at a lateral side portion of the leveling body 20. And a shield plate 30.
In FIG. 4, the imaginary line segment a indicates the relative position of the planting target portion corresponding to the position of the leveling float 2. Moreover, the imaginary line segment b of the figure shows the position corresponding to the passing trace of the front and rear wheels 11, 12 corresponding to the position of the leveling float 2. An alternate long and short dash line c is a center line indicating the center position of the leveling float 2 in the horizontal width direction.

The leveling body 20 includes a horizontally long float main body 21, a front projecting portion 22 extending forward from a center position in the left-right direction of the float main body 21, and two left-right directions of the float main body 21. And a pair of left and right rear projecting portions 23 extending rearward.
The front projecting portion 22 projects from the left and right center position of the front end of the float main body portion 21 toward the front, and has a function as a sensor float used for planting control. The front overhanging portion 22 exhibits a lateral width that is one third to one quarter of the lateral width of the float main body portion 21.

  The float main body 21, the front overhanging portion 22, and the rear overhanging portion 23 are formed integrally by blow molding in which two resin plates are stacked and placed in a mold, and compressed air is blown between the two resin plates. Has been. As the resin material used, engineering resins such as nylon, polyethylene, ABS, and PET are used.

As shown in FIG. 3, FIG. 9, and FIG. 10, the front overhanging portion 22 and the float main body portion 21 located behind the front overhanging portion 22 are based on the rear end portion of the float main body portion 21. In a side view, it is formed in a slightly curved state so that the front side of the front overhanging portion 22 warps upward.
Also, in the portion of the float main body 21 located on the lateral side of the front overhanging portion 22, as shown in FIGS. 3, 7, and 8, the front end side is directed upward with reference to the rear end portion. It is formed in a slightly curved state so as to warp.

  Since the leveling body 20 is formed by blow molding by overlapping two resin plates, a flange portion 2a that clearly shows a parting line is formed at the middle position of the leveling body 20 as a shape after molding. The contour of the leveling body 20 is formed to bulge up and down with respect to the flange portion 2a.

[Top structure of leveling body]
The shape of the upper surface of the leveling body 20 will be described. As shown in FIGS. 4, 5, and 9, in the front projecting portion 22, most of the upper surface is formed on a rear-falling inclined surface 22 </ b> A that gently slopes so as to be positioned higher toward the front end side. A front lower inclined surface 22C is formed which is inclined forward and downward from the front end of the rear lower inclined surface 22A to the front and lateral sides. As shown in FIGS. 4, 5, 10, and 11, the mounting portion 22 </ b> B that is recessed downwards near the front end of the rear-falling inclined surface 22 </ b> A across the rear-falling inclined surface 22 </ b> A and the front-falling inclined surface 22 </ b> C. Is provided.
A flat surface that is substantially horizontal when the leveling float 2 is in a substantially horizontal posture is formed on the mounting portion 22B, and a front surface for supporting the leveling float 2 by suspending the leveling float 2 on the body frame side is provided on the flat surface. A bracket 13 is attached.

The mounting portion 22B formed so as to be recessed downward is opened to the front space at the front end of the front overhanging portion 22 and to the rear space at the rear end so as to be opened to the rear space at the rear end. A portion of the inclined surface 22C near the center in the left-right direction is cut away. Thus, since the mounting part 22B is in a state of communicating with the front and rear spaces, it is possible to guide the muddy water on the farm surface downwardly onto the inclined surface 22A. That is, the recessed space formed by the presence of the mounting portion 22B constitutes a muddy water guiding path that lowers the muddy water to the upper side of the inclined surface 22A.
By providing such a configuration, the muddy water can be lowered and introduced onto the inclined surface 22A. Therefore, the muddy water is pushed away at the front end of the front overhanging portion 22, and the pushed muddy water pushes down the existing planted seedling. It is effective in preventing it.

As shown in FIGS. 3 and 4, the left and right rear projecting portions 23 are formed with mounting seats 23A for mounting and fixing the rear bracket 14 to the support stays 9A attached to the planting transmission case 9. It is. The mounting seat 23A is provided in the vicinity of the rear end that is very close to the rear end of the rear projecting portion 23, and the rear bracket 14 attached to the mounting seat 23A swings around the rear fulcrum x with respect to the support stay 9A. It is pivotally supported.
Therefore, even if the leveling float 2 rotates upward around the rear fulcrum x of the rear bracket 14, the depth at which the rear end of the rearward projecting portion 23 enters the farm surface is not so large, and the leveling surface is disturbed. Less is.

  As shown in FIGS. 4 and 5, downward recessed installation portions 24 are formed at four locations in the left-right direction at the rear end of the float main body 21. The concave installation portion 24 is configured to be able to mount a groove producing device (not shown) when a fertilizer application device (not shown) is mounted on the rear part of the machine body.

Of the horizontally long float main body 21, the front edge 21 a is formed in a straight line along the left-right horizontal direction at a portion located laterally of the front overhanging portion 22. The outermost end edge 21b is formed in a straight line along a direction orthogonal to the front end edge 21a.
As described above, the end surface of the float main body portion 21 serving as the lateral outermost end edge 21a is formed in a straight line along the direction orthogonal to the front end edge 21a and along the propulsion direction of the traveling machine body 1. It is difficult for mud soil flowing along the end face of the outer edge 21b to be pushed laterally.

[Bottom structure of leveling body]
As shown in FIGS. 6 and 10, the center-side mud introduction portion 25 is formed across the bottom surface of the front overhang portion 22 and the bottom surface of the portion of the float main body portion 21 located behind the front overhang portion 22. It is. The center side mud introduction part 25 is recessed upward from the front end position of the front overhanging part 22 in a side view, and maintains a substantially constant recessed depth along the curved state of the bottom surface. It is formed up to the vicinity of the rear end of the main body 21.

  The bottom view shape of the center side mud introduction part 25 is as follows. The center side mud introduction part 25 is opened from the front end position of the front overhanging part 22, the fan-shaped taking-in part 25 </ b> A entering the rear side in a state where the lateral width of the opening 25 a is gradually narrowed, the front overhanging part 22 and the float It has a minimum lateral width at a position corresponding to a connecting portion with the main body portion 21 and a narrow width portion 25B extending to the rear end portion of the float main body portion 21 while maintaining the minimum lateral width.

In the case of the conventional configuration in which the central mud introduction portion 25 is not provided, the mud soil blocked by the front end of the front overhanging portion 22 flows in a direction along the front end edge 21 a of the lateral side portion of the float main body portion 21. Tend.
Compared with this, in the thing of this embodiment which formed the center side mud introduction part 25 in the front overhang | projection part 22, the muddy soil from the front can be induced | guided | derived in the center side mud introduction part 25, and it can be made to flow backward. It became possible. Therefore, it does not flow to the lateral outer side along the lateral side portion of the float main body 21 more than necessary, and it is easy to inhibit the existing seedlings and the like from falling down.

Further, the float main body 21 has a side mud that takes in mud so that the propulsion wheel traces are leveled away from the central mud introduction part 25 at a position away from the center mud introduction part 25 on the bottom surface of the lateral part. An introduction part 26 is provided.
The bottom view shape of the side mud introduction part 26 is as follows. As shown in FIG. 6, the side mud introduction portion 26 opens from the front end of the lateral portion of the float main body portion 21, and is a fan-shaped recess that enters the rear side in a state where the lateral width of the opening portion 26 a is gradually narrowed. Presents an intrusive shape.

  As shown in FIGS. 6 and 8, the side mud introduction part 26 opens from the front edge 21 a part of the lateral side part of the float body part 21, and the ceiling surface of the side mud introduction part 26 in a side view. 26b is formed in a curved shape along the curved shape of the bottom surface of the float main body portion 21 (a first leveling portion 27A described later) and extends rearward. Then, the rear end side becomes gradually shallower so as to be at the same height position at the rear end portion of the first leveling portion 27A, and is connected to the horizontal surface 27a of the third leveling portion 27C without a step. Thus, the rear end portion of the side mud introduction portion 26 is connected to the third leveling portion 27C without a step.

  With such a configuration, the mud that swells on both lateral sides of the wheel marks formed by the front and rear wheels 1 and 2 is taken into the lateral mud introduction part 26 through the wide opening 26a, while gradually reducing the lateral width, Moreover, it can be pushed downward by the ceiling surface 26b of the side mud introduction part 26, and the taken mud can be brought close to the wheel traces to refill the wheel traces.

  As shown in FIGS. 6-11, the bottom face part 27 is formed in the circumference | surroundings surrounding the center side mud introduction part 25, and the front bottom face part 27E of the bottom face parts 27 is located so as to be closer to the front end side in a side view. It is formed in a curved shape. A rear bottom surface portion surrounding the narrow portion 25B of the center side mud introduction portion 25 is a portion that protrudes most downward on the bottom surface of the entire leveling float 2. Of the rear bottom surface portion, a portion surrounding the narrow portion 25B from both the left and right sides is referred to as a second leveling portion 27B, and a portion located behind the narrow width portion 25B is referred to as a fourth leveling portion 27D.

  As shown in FIG. 6, a recessed portion 28 that is recessed above the second leveling portion 27B and the fourth leveling portion 27D is formed on both lateral sides of the second leveling portion 27B and the fourth leveling portion 27D. is there. The recessed portion 28 is formed in a region from the second leveling portion 27B and the fourth leveling portion 27D to the vicinity of the side mud introduction portion 26, and the front-rear width is a width that extends substantially across the front-rear width of the float main body portion 21. It is formed with.

  The recessed portion 28 is divided into two regions on the left and right, and the bottom surface has a different degree of inclination. That is, as shown in FIG. 6, the recessed portion 28 is a second recessed portion located adjacent to both lateral sides of the second leveling portion 27 </ b> B and the fourth leveling portion 27 </ b> D surrounding the narrow width portion 24 </ b> B of the center side mud introduction portion 25. As shown in FIG. 6 and FIG. 9, the insertion portion 28 </ b> B is arranged in a state adjacent to the second concave insertion portion 28 </ b> B and includes a first concave insertion portion 28 </ b> A adjacent to the side mud introduction portion 26.

  As shown in FIGS. 6 and 9, the second recessed portion 28 </ b> B is formed in a linear inclined surface 28 a that is inclined so as to be gradually positioned downward on the front end side in a side view, and is centered at the front end position. It is connected to the front bottom surface portion 27E surrounding the fan-shaped intake portion 25A of the side mud introduction portion 25.

On the other hand, as shown in FIGS. 6 and 9, the first recessed portion 28 </ b> A is formed on the curved surface 28 b positioned upward in the front end side in a side view, and a straight line is formed at the rear end portion of the float main body portion 21. It is formed on a flat plane 28c.
As shown in FIGS. 5, 9, and 10, the first recessed portion 28 </ b> A and the second recessed portion 28 </ b> B are both formed up to the rear end of the float body 21, and near the rear end of the float body 21, The height of the flange portion 2a is aligned.

  The first recessed portion 28 </ b> A described above is configured to take in the muddy soil flowing along the peripheral edge portion of the front overhang portion 22 and to flow backward.

  As shown in FIGS. 6-8, the 1st leveling part 27A and the 3rd leveling part 27C are formed in the circumference | surroundings of the side side mud introduction part 26, and the 1st leveling part 27A is a side side mud introduction part. 26 is formed in a curved shape located on the upper side of the front end along the curved shape of the bottom surface of the float main body 21 in a side view as described above.

  6-8, the 3rd leveling part 27C is provided in the back side of the side mud introduction part 26, and is formed in the state where the horizontal surface 27a continues in the back of the 1st leveling part 27A. The horizontal surface 27a is a portion located on the lowermost side of the leveling body 20. On the rear side of the horizontal surface 27a, a rear rising inclined surface 27b is formed so as to be closer to the rear end of the rear projecting portion 23. The horizontal surface 27a and the rearward rising inclined surface 27b form a third leveling portion 27C.

The rear end of the side mud introduction part 26 is connected to the front end of the horizontal plane 27a without a step, and the mud taken in the side mud introduction part 26 flows toward the horizontal plane 27a without staying at the connection site. .
Further, since a rearwardly inclined surface 27b that is inclined upward toward the rear side is formed on the rear side of the horizontal surface 27a, mud retention on the rearwardly inclined surface 27b is suppressed, and the leveling float 2 is rotated around the rear fulcrum. Even if it is swung up and down, the rear rising inclined surface 27b is difficult to sink deeply into the field surface, and mud pushing is also less.

As shown by the two-dot chain line in FIG. 6, the bottom surface of the rear end portion of the float main body portion 21 has a front-rear width in the front-rear direction of the float main body portion 21 over a lateral width corresponding to all planting strips. A strip-shaped leveling portion A having a shortened strip shape is formed.
This belt-shaped leveling portion A includes a fourth leveling portion 27D formed at the rear end portion of the center side mud introduction portion 25 and a rear end of the second recessed portion 28B formed on both lateral sides of the center side mud introduction portion 25. A flat surface 28c formed at the rear end of the first recessed portion 28A adjacent to the front-rear inclined surface 28a and the second recessed portion 28B, and a side located further laterally than the recessed portion 28. It is comprised with the horizontal level 3rd leveling part 27C currently formed in the rear end of the side mud introduction part 26. FIG. The third leveling portion 27 </ b> C is formed in a state from the side-side mud introduction portion 26 to the lateral side end portion of the float main body portion 21.

  As shown in FIG. 5 and FIG. 6, among those constituting the belt-shaped leveling portion A described above, the fourth leveling portion 27 </ b> D located behind the center side mud introducing portion 25 and the rear side mud introducing portion 26 The 3rd leveling part 27C formed in the end is formed in the flat surface which protrudes most downward. On the other hand, the inclined surface 28a and the plane 28c forming the recessed portion 28, which are sandwiched between the third leveling portion 27C and the fourth leveling portion 27D, are located slightly above and are at substantially the same height as the flange portion 2a. It is in.

The third leveling portion 27C is located at the lowest position and forms a horizontal plane in the region including the front side overhang portion 22 and the portion of the float main body portion 21 located behind the front side overhang portion 22. , High part of leveling function.
4th leveling part 27D is located in the lowest part and forms a horizontal surface in the area | region containing the part located in the back of the front side overhang | projection part 22 in the back side overhang | projection part 23 and the float main body part 21. , High part of leveling function.

  The meaning of the presence of the recessed portion 28 formed between the center side mud introduction portion 25 and the side side mud introduction portion 26 is that the belt-like leveling portion A is on the same plane over the entire length of the planting width. It is considered that the leveling function can be greatly improved, but in that case, it is easy to generate mud pool and mud pushing in the belt leveling part A, and the function of improving the leveling function and avoiding mud pushing etc. It does not satisfy both.

  Therefore, the muddy water flowing to the front end of the float main body 21 in which the recessed portion 28 is formed along the lateral side edge of the front overhanging portion 22 protruding forward is used as the float main body 21. Instead of catching it at the front end, it is guided rearward through the recessed portion 28 to avoid mud pool and to prevent the mud soil from flowing out to the lateral side of the float main body 21. is there.

  The strip-shaped leveling part A of the leveling float 2 is located in front of the seedling planting mechanism 10. Thereby, the leveling function with respect to the planting surface is easily performed by the belt-shaped leveling portion A. Moreover, the strip-shaped leveling part A is also formed in the rear part of the front overhanging part 22 located in the center of the planting width, and it is possible to level the marker marks applied to the farm surface in the previous step. it can.

[Wave board]
At the lateral side portion of the leveling body 20 configured as described above, the horizontal surface of the leveling body 20 is separated from the lateral outermost end edge 21b of the horizontally long rectangular main body 21 by a predetermined distance d. A wave breaker plate 30 that is longer than the length in the front-rear direction at the outermost edge 21b is provided.
As shown in FIGS. 3, 4, and 12, the wave breaker plate 30 is formed in a plate shape with a synthetic resin material, and is detachably connected and fixed to the leveling body 20 via a connector 31. .

As shown in FIG. 3, the wave breaker plate 30 is formed in a substantially boat-like shape in a side view in which the front end edge 30 a has a front rising slope toward the front side. In FIG. 3, the lower end edge 30b that is continuous with the lower end side of the front end edge 30a in a side view is at a height that is approximately the same as the third leveling portion 27C and the fourth leveling portion 27D that are the lowest end edges of the leveling body 20. The upper edge 30c is mounted so as to be at the same height as the front edge 21a of the float body 21.
At this time, the front end of the wave breaker plate 30 extends to the front side of the front end edge 21 a of the float main body 21 and close to the front end of the front overhanging portion 22, and the rear end is the rear of the funnel main body 21. It is located on the rear side of the end edge 21c and on the front side of the rear end of the rear overhang portion 23.

An attachment portion 29 for attaching the wave breaker plate 30 is provided along the front end edge 21a of the float main body portion 21 at the laterally outer end portion thereof.
As shown in FIG. 12, the mounting portion 29 is formed by forming a plurality of mounting holes 29a in a part of the flange portion 2a of the leveling float 2, and a connecting bolt 34 is provided in the mounting hole 29a. The float side connection part 32 of the connection tool 31 is connected via the connection.

  The connection tool 31 includes a float side connection portion 32 for the mounting portion 29 on the leveling body 20 side, and a wave breaker side connection portion 33 connected to the side surface of the wave breaker plate 30. And the float side connection part 32 is along the front end edge 21a of the float main-body part 21 along the left-right direction, and the wave breaking side connection part 33 is the direction orthogonal to the direction of the said front end edge 21a, and the wave breaker board 30 of the front-back direction. It is formed in L shape by planar view so that a side surface may be met.

The float-side connecting portion 32 is formed with more connecting holes 32a than the number of connecting bolts 34. By changing the position of the connecting hole 32a with respect to the mounting hole 29a in the left-right direction, the entire wave breaker plate 30 is formed. The position can be changed in the left-right direction.
A plurality of connection holes 33a through which the connection bolts 35 can be inserted are formed in the wave breaker side connection portion 33, and a plurality of connection holes 36a, 36b through which the connection bolts 35 can be inserted are also formed on the wave breaker plate 30 side. ing.
The connection holes 36a and 36b on the side of the breaker plate 30 are formed with a connection hole 36a having the same size as the interval between the connection holes 33a on the side of the breaker side connection part 33 and another set of connection holes 36b in parallel with the connection hole 36a. If the connecting hole 33a on the wave-breaking side connecting portion 33 is matched with the pair of connecting holes 36b on the lower stage side and connected with the connecting bolt 35, the entire wave blocking plate 30 moves slightly upward. It is comprised so that it can attach in the state made.

  As with the lateral outermost edge 21b of the float main body 21, the wave breaker plate 30 provided on the lateral side portion of the leveling body 20 is substantially parallel to the traveling direction along the traveling direction of the traveling machine body 1. It is to be attached. And the muddy water pushed by the front part of the leveling body 20 between the lateral outermost edge 21b of the float main body 21 and the side surface of the wave breaker plate 30 on the machine body side is the front end edge 21a of the float main body 21. When moving to the laterally outward side, resistance is given to the movement of the moving muddy water to the laterally outward side, and the muddy water is moved to the lateral outermost edge 21b of the float main body 21 and the wave shield 30. Between the lateral outermost edge 21b of the float main body 21 and the side surface on the inward side of the wave breaker plate 30 so as to flow in the front-rear direction. The flow passage R is provided so as to be formed.

Further, as shown in FIGS. 1 and 4, the wave breaker plate 30 extends to a position near the front end of the front overhanging portion 22, and the front overhanging portion 22 and the wave breaker plate 30 in plan view The rear wheel 12 enters between the rear wheel 12 and the rear wheel 12 is disposed so as to overlap the front overhanging portion 22 and the wave breaker plate 30 in the front-rear direction.
Since the rear wheel 12, the forward projecting portion 22 and the wave breaker plate 30 are disposed in such a positional relationship, mud waves generated as the rear wheel 12 rotates can flow in the left-right direction. The movement in the left-right direction is limited by the front overhanging portion 22 and the wave breaker plate 30, and is configured to be suppressed from flowing laterally outward where existing seedlings exist.

[Other Embodiment 1]
In the embodiment, the structure in which the position of the wave shield 30 is adjusted by one step in the vertical direction is shown, but the present invention is not limited to this. For example, as shown in FIGS. 13 and 14, the number and position of the connecting holes 36a and 36b formed in the wave breaker plate 30 are formed in multiple stages to adjust the position of the wave breaker plate 30 in the front-rear direction, or The number of connection holes 32a of the float side connection part 32 with respect to the mounting part 29 on the leveling body 20 side is increased so that the height position including the direction position is adjusted or the change width of the predetermined interval d is expanded. Etc. can be changed.

In this case, among the many connection holes 36a and 36b drilled in the wave breaker plate 30, the one in which the connection bolt 35 is not inserted can pass the muddy water, but the muddy water passing through the connection holes 36a and 36b. In this case, most of the energy as mud waves is lost due to the wave-dissipating effect of the small-diameter coupling holes 36a and 36b. For this reason, even if the muddy water that has passed through the coupling holes 36a, 36b flows out to the adjacent strip side where the existing seedlings exist, there is no problem.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the embodiment, the wave breaker plate 30 is disposed in a lateral side portion of the leveling body 20 in a range extending from the front side of the front end edge 21a of the float main body 21 to the rear side of the rear end edge 21c. However, the present invention is not limited to this.
For example, the front end side of the wave breaker plate 30 is located on the front side of the front end edge 21a of the float main body 21, and the rear end side is at the same position as the rear end edge 21c of the float main body 21 or the rear end edge 21c. The structure located in the front side may be sufficient. In the case of such a configuration, even when a large amount of mud push occurs temporarily at the front portion of the float main body 21, the large amount of mud flows into the adjacent strip side beyond the front end side of the mudguard plate 30. This is useful in that the fear can be reduced.

On the contrary, the front end side of the wave breaker plate 30 is located at the same position as the front end edge 21a of the float main body 21 or at the rear side of the front end edge 21a, and the rear end side is from the rear end edge 21c of the float main body 21. Also, it may have a structure located on the rear side. In such a configuration, the rear end side of the mudguard plate 30 extends rearward long, so that the rear end of the float main body 21 is used when the traveling speed of the traveling machine body 1 is high and the flow rate of muddy water is large. This is useful in that it is possible to reduce the possibility that the muddy water that flows backward through the edge 21c flows so as to diffuse again to the adjacent strip side.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the embodiment, the wave breaker plate 30 is configured by a simple flat plate material, but is not limited thereto. If the side surface is configured by a surface along the traveling direction of the traveling machine body 1, for example, the cross section along the left-right direction may be L-shaped or channel-shaped.
Further, the wave breaker plate 30 may have a large number of holes and slits dedicated to draining on the side surface. The material is not limited to a synthetic resin material, and an appropriate material such as sheet metal or wood can be used. However, it is desirable that it has a moderate rigidity and is lightweight.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the embodiment, an example in which the mudguard plate 30 is mounted on the left and right ends of the leveling body 20 is illustrated, but it may be only one side on which the existing seedlings exist.
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the embodiment, the end surface of the lateral outermost edge 21b is configured as a surface along the propulsion direction, but the end surface of the lateral outermost edge 21b is closer to the left and right center side of the leveling float 2 toward the rear end side. Further, it may be configured to be inclined with respect to the propulsion direction.
In this case, the mounting posture of the wave breaker plate 30 is preferably provided in a state parallel to the propulsion direction rather than configured to be inclined with respect to the propulsion direction in parallel with the end surface of the lateral outermost edge 21b. The resistance of mud waves accompanying the progress of

  The present invention can be applied to leveling floats of paddy field work machines such as walking type rice transplanters and weed transplanters other than riding type rice transplanters.

2 Leveling float 20 Leveling body 21 Float main body 21b Horizontal outermost edge 22 Front overhanging portion 23 Back overhanging portion 30 Wave breaker L Horizontal width

Claims (4)

A leveling body having a width corresponding to the entire strip,
With a wave breaker that suppresses the diffusion of mud waves to the outside of the leveling body,
The wave breaker plate is disposed between the lateral outermost edge of the leveling body at a predetermined interval that allows passage of mud waves generated with the progress of the leveling body to the rear side. And the leveling float of the paddy field machine formed longer than the length in the front-rear direction at the lateral outermost edge of the leveling body.   The leveling float of the paddy field machine of Claim 1 arrange | positioned so that the front-end part of the said breaker board may be located ahead of the front-end part near the horizontal outermost edge of the said leveling body.   The leveling of the paddy field machine according to claim 1 or 2, wherein a rear end portion of the wave breaker plate is disposed rearward of a rear end portion near a lateral outermost end edge of the leveling body. float.   The wave breaker plate is configured to be capable of adjusting a mounting position in a perspective direction along a lateral width direction, a front-rear direction, or a vertical direction with respect to a lateral outermost end portion of the leveling body. The leveling float of the paddy field machine as described in any one.

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