JP2002363959A - Grooving machine for paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grooving machine for a paddy field capable of forming a sufficient depth and width of a catch drain in its ideal inverse-trapezoidal cross section, forming no soil swelling impeding the drain in the both sides or one side of the catch drain, and eliminated from affected by the quality of the cultivated soil such as soft or hard soil. SOLUTION: This grooving machine is provided with a rotor driving gear part on the way to a main driving shaft support pipe in the rearward of a traveling wheel and the rotor driving shaft suspended downward from the rotor driving gear part. The rotor driving shaft is journaled to a support frame on its way and provided with the rough groove forming rotor with multiple vanes for excavating the cultivated soil in its lower bottom and a dispersion preventing board with vanes for discharging a raised mud flow to the surroundings in the upper end part respectively. This machine is also provided with a shape adjusting float for pressurizing rough grooved sides suspended from the support frame in the rearward of the rotor and an operation handle having its front end fixed to the driving shaft support pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field grooving machine for forming a drainage ditch in a field for paddy rice cultivation in paddy rice cultivation management work.

[0002]

2. Description of the Related Art In the production of paddy rice, drainage grooves having an appropriate width and depth are formed between the rice strips by a paddy field grooving machine, and work is performed for drying the paddy fields. 2. Description of the Related Art As a conventional paddy field grooving machine, a grooving machine made of a triangular steel plate and immersed in cultivated soil while proceeding, and pressing the cultivated soil to the left and right to form a drain gutter has been widely used. There is also a proposal of a grooving machine for moving a rotating body driven by an engine (Japanese Patent Laid-Open No. Hei 7-26490).
No. 2).

[0003]

However, in the conventional paddy field grooving machine, raised portions due to the excavated soil are formed on both sides of the formed drainage channel, and water in the field flows into the drainage channel. In addition, if the cultivated soil is too soft, the drainage ditches formed by pushing the soil will slide down after the machine passes. Further, if the cultivated soil is hard, the drainage ditch is too shallow, such as the drainage ditch is too shallow.

In the case of the rotating body, the rotating shaft is a horizontal axis in the traveling direction, and a blade plate is protruded from the rotating shaft. Lack of bottom area makes water flow poor, and soil is drained on one side, so that only one side of drainage pits raises soil, making it difficult to obtain uniform drainage. There was also a problem that the drainage ditch was easily buried.

According to the present invention, in order to solve the above-mentioned adverse effects, there is no swelling of the soil which hinders drainage on both sides or one side of the drainage ditch, and there is no influence of soil such as hard and soft soil of cultivated soil. It is an object of the present invention to provide a paddy field grooving machine capable of forming a drainage groove having a sufficient depth and width in an ideal cross section.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a running wheel drive gear portion at a front end of a main drive shaft support pipe in which a main drive shaft driven by an engine is provided. In a paddy field power traveling vehicle equipped with traveling wheels driven via the traveling wheel drive gear section, a rotating body drive gear section is provided at an intermediate portion of a main drive shaft support pipe behind the traveling wheels, and a rotating body drive gear section is provided. A rotating body drive shaft is suspended downward, and the rotating body drive shaft is supported by a support frame in the middle, and a rotating body for forming a rough groove having a plurality of blades for cutting up cultivated soil is provided at a lower end thereof, and an upper end thereof. A diffusion prevention plate with blades for discharging the raised mud flow to the surroundings is attached to each, and a shaping float for pressing the rough groove side surface is vertically provided from the support frame behind the rotating body. Operation with the front end fixed to the drive shaft support tube To constitute a paddy field for trench wall cutter having a handle.

In addition, two rotator driving gear sections are provided at appropriate intervals in the front and rear of the main drive shaft support pipe behind the running wheels, so that the two rotators can be mounted. Sometimes.

[0008] In addition, a pair of left and right groove cutting blades may be provided vertically below the support frame between the traveling wheel and the rotating body.

[0009]

According to the first aspect of the present invention, in a flooded field by the paddy field powered traveling vehicle, the rice travels between the rice streaks,
When the rotating body rotates into the cultivated soil, an inverted trapezoidal drainage groove that easily flows is formed by the rotating body on the vertical axis. At this time,
The cultivated soil is pulverized by the action of the blades attached to the rotating body, mixed with the rice water and agitated, and rises into a mud-like state. The stream is spread widely over the surface of the field and drains are formed.

Further, the shaping float at the rear of the rotating body penetrates into a drainage ditch formed by the rotating body, and as a reaction of the rotating body (drilling, lifting, spreading and transporting), the rotating body applies a downward force. receive. The buoyancy acts to cancel the downward force received by the rotating body, thereby reducing the load on the engine. In addition, the shaping float prevents a mudflow from entering the drainage groove formed by the rotating body, and presses and shapes the side and bottom surfaces of the drainage groove to form a stable drainage groove that is difficult to collapse. It is preferable that the body of the shaping float is manufactured to be hollow and lightweight.

According to the second aspect of the present invention, at an intermediate portion of the main drive shaft support pipe behind the traveling wheels, the two are arranged at appropriate intervals.
A drain is formed by the rotating bodies. That is, a part of the drainage groove is formed by the front rotator (first rotator), and a part of the drainage groove is formed by the rear rotator (second rotator). By penetrating into the formed drainage groove and completing the drainage groove, a drainage groove having a sufficient depth and width can be formed.

According to the third aspect of the present invention, the drainage groove side wall is made smooth by entering into the cultivated soil and forming a notch by the pair of groove cutting blades vertically provided from the support frame behind the running wheel. In addition, excavation for forming a groove by the rotating body is facilitated.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 illustrate a first embodiment. As shown in FIG.
A paddy field powered traveling vehicle equipped with an engine 1, traveling wheels 3, a main drive shaft support pipe 2, a traveling wheel drive gear section 4, and an operating handle 5, and the traveling wheels 3 are rotated from the front in the forward direction and backward. The shaping float 70 is arranged in series on the body 30 and further on the rear side. Power from the engine 1 is transmitted to the rotating body drive gear unit 10 and further to the traveling wheel drive gear unit 4 via a main drive shaft (not shown) provided in the main drive shaft support tube 2. Thus, the power is transmitted from the traveling wheel drive gear unit 4 to the traveling wheels 3 so that the paddy field grooving machine travels between the rice streaks in the flooded field.

In addition, the power of the engine 1 is transmitted to the rotating body drive shaft 20 via the rotating body drive gear unit 10, so that the rotating body 30 rotates. The rotator drive shaft 20 is provided vertically below the rotator drive gear portion 10 at an intermediate portion of the main drive shaft support tube 2, and is rotatably supported by a support frame 6 on the way, and a rotator 30 is provided at a lower end portion. Is screwed. The rotating body 30 has a plurality of blades 32, 32 protruding from a shaft-shaped boss body 31 (FIG. 2). Is enlarged, and a cutting edge is provided at the outer peripheral end portion. Further, the blades 32, 32 are vertically provided on the boss body 31 so as to be inclined from the front in the rotation direction to the rear and from the upper part to the lower part. Furthermore, the maximum blade width of each blade 32, 32,
It is reduced from the upper blade to the lower blade. When the rotating body 30 rotates into the field cultivated soil, the blades 32, 32 cause the cultivated soil and the residues in the cultivated soil to be cut outwardly from the center of the rotating body 30 and to be crushed and agitated. Then, the cross section becomes a mud-like shape with a substantially inverted trapezoidal shape 102 (dashed line in FIG. 4). Further, the cultivated soil that has become muddy due to the inclination of the blades 32, 32 rises as mudflow.

At the upper end of the rotating body 30, a substantially dish-shaped anti-scattering plate 33 whose peripheral edge is gradually enlarged downward is attached. Further, triangular diffusion blades 34, 34 each having the sides of the lower surface of the anti-scattering plate 33 and the axial direction of the boss 31 are vertically provided between the lower surface of the anti-scattering plate 33 and the axial direction of the boss 31. The rising mud flow is received by the scattering prevention plate 33 at the upper end portion of the rotating body 30 and, at the same time, diffuses and moves along the lower surface of the scattering prevention plate 33 by the rotational force of the diffusion blades 34, 34. And the mudflow is slightly corrected downward by the downward inclination of the anti-scattering plate 33 at the peripheral edge of the anti-scattering plate 33,
Since the water is diffused and conveyed without spouting above the water surface of the field, mud does not adhere to the rice body.

The blades 32, 32 are attached to the boss body 31 by changing the shape, the attachment position, and the number of attachments.
Various types of rotating bodies can be easily manufactured. Furthermore, the rotating body
A screw portion (male screw) 35 protrudes from the upper end of 30. In this way, the rotating body 30 is rotated at the lower end of the rotating body drive shaft 20 (female screw).
Since it is detachably screwed to the rotator, various rotators can be replaced to select and mount a rotator most suitable for the soil quality of the cultivated soil. Therefore, it is possible to easily form a drain groove having a sufficient depth and width.

At the rear of the support frame 6 behind the rotating body 30 (FIG. 3), the shaping float 71 is attached to mounting holes formed in a pair of front and rear shaping float mounting brackets 75, 75, respectively.
73, 73 are penetrated, and it is screwed to the lower part and vertically suspended. The mounting rods 73, 73 are fixed to the front end and the rear end of the shaping float 71 in this manner, but since a large number of holes for screwing are formed, it is necessary to change the positions of the mounting holes. Thereby, the height and inclination of the shaping float 71 can be adjusted.

Regarding the shape of the shaped float 71, the side portion gradually widens rearward from the front end portion in plan view, and the bottom portion has a substantially cubic shape gradually inclined backward from the front end portion. The excavation width is slightly wider than the excavation width 30 and the maximum depth of the shaping float 71 is also slightly deeper than the excavation depth of the rotating body 30). When the shaping float 71 enters the drainage groove formed by the rotating body 30 as described above, the side part and the bottom part of the shaping float 71 press and shape the side wall and the bottom surface of the drainage groove. Thus, a drain groove that is difficult to collapse is formed (solid line in FIG. 4). Also, the mudflow shielding plate
The mud flow is shut off by 72 and the mud flow is prevented from entering the existing drain. Further, the shaping float 71 is made of a robust and lightweight synthetic resin having a hollow hermetically sealed inside. By having a size having an appropriate buoyancy in this way, the buoyancy acts to cancel the force received downward by the excavation of the rotating body 30, so that
The burden on the engine 1 is reduced, which improves the maneuverability.

The left and right support frames 6, 6 have their front ends fixed to both left and right bearings of the traveling wheel 3, extend rearward therefrom, and have a transverse member (not shown) at the middle and rear ends. It is connected and framed by And support frame
At the rear part of the engine 6, the engine 1 is supported by a member 7. Further, the operation handle 5 has a front end fixed to a middle portion of the main drive shaft support pipe 2 and protrudes rearward while branching left and right, and is further connected to each other at the rear to form a loop-shaped handle. . Throttle levers (not shown) are attached to the left and right rear portions of the handle 5,
Thus, the output of the engine 1 is adjusted.

FIG. 4 is an excavated sectional view of a drainage ditch formed by the above-mentioned grooving machine. 101 is a field cultivated soil, 102 is a digging part by the rotating body 30, and 103 is a pressing and shaping part by the shaping float part 70.

FIGS. 5 to 8 illustrate the second embodiment. As shown in the figure, one having one rotating body in the first embodiment is replaced with two rotating bodies in this case, and the other configuration is the same.

As in the first embodiment, two rotating body drive gears 11 and 12 provided in the middle of the main drive shaft support tube 2 are provided.
The rotating body drive shafts 21 and 22 are respectively provided in a downward direction, and are rotatably supported by the support frame 6 in the middle, and the rotating bodies 60 and 50 are screwed to lower ends thereof, respectively. That is,
Two rotators (the first rotator 60 and the second rotator 50) rotate and enter the field cultivated soil by the power of the engine 1.

The first rotating body 60 on the front side has a plurality of substantially hook-shaped blades 62 attached to a boss body 61. The substantially hook-shaped blade 62 is provided with a cutting blade 63 at the front end in the rotation direction, and each blade is made smaller in diameter than the upper blade according to the lower blade. The upper end of the boss body 61 has a screw portion.
65 are protruding. When the first rotating body 60 enters into the cultivated soil while rotating, the cultivated soil and the residue in the cultivated soil are pulverized and cut into fine pieces by the rotation of the blades 62, 62, and are stirred with the field water to be muddy. The first rotating body 60 causes the pulverized soil pulverized cross section to have a substantially inverted trapezoidal shape in a stepped shape (a dashed line in FIG. 8).

The second rotating body 50 on the rear side has a helical blade 52 attached to a boss body 51, and the width of the blade is increased from the lower part to the upper part. A scattering prevention plate 53 and diffusion blades 54, 54 are attached to the upper end, similarly to the rotating body of the first embodiment. In addition, a screw part on the upper end
55 are protruding. When the second rotating body 50 enters the muddy soil formed by the first rotating body 60 while rotating,
The function is substantially the same as that of the rotating body 30 of the first embodiment. Further, a step-like portion (a portion indicated by a chain line in FIG. 8) of the cross section formed by the first rotating body 60 is deleted.

Since the second embodiment has two rotating bodies as described above, each of the rotating bodies can have a function-specific characteristic. That is, the first rotating body 60 has a function of exclusively crushing and cultivating the cultivated soil, and the second rotating body 50 has a function of exclusively lifting and diffusing the soil, so that a more complete drain canal is provided. Can be formed. In addition, since the two rotating bodies are detachably screwed, various kinds of rotating bodies can be combined in various ways to select the most suitable rotating body for the soil quality of the cultivated soil.

FIG. 8 is an excavated sectional view of a drainage ditch formed according to the second embodiment. 111 is a field cultivated soil, 112 is a crushing unit by the first rotating body 60, and is a second rotating body.
Unloading part by 50, 113 is an excavation part by the second rotating body 50, 114
Is a press-formed portion formed by the shaping float portion 70.

FIG. 9 shows a third embodiment. As shown in the figure, it is the same as the first embodiment, but
In addition, there is a difference that a pair of left and right groove cutting blades 80, 80 are vertically provided downward from the support frame 6 in front of the rotating body 30.

The shape of the groove cutting blades 81, 81 is gradually curved from the front in the forward direction to the rear and from the upper part to the lower part, and a cutting edge is provided at the front end in the forward direction.
Further, the distance between the left and right groove cutting blades 81, 81 is gradually reduced and approached toward the lower side from the upper part of the groove cutting blade. The groove cutting blades 81, 81 penetrate into the cultivated soil from behind the drive wheel 3, and form cuts having a substantially inverted trapezoidal shape in cross section while cutting residues in the cultivated soil. This notch with a substantially inverted trapezoid shape
The rotation width of the rotating body 30 is wider and the shaping float 71 is narrower than the substantially inverted trapezoidal shape when viewed from the front. Further, since the groove cutting blades 81, 81 are curved, the groove cutting blades 81, 81 can easily enter the cultivated soil.

The rotator 30 behind the groove cutting blade 81, 81
When rotating and entering into the substantially inverted trapezoidal cut formed in the cultivated soil by 1, 81, the cultivated soil is crushed at the cut, so that the formed drainage groove has a constant groove width, and , The side wall becomes smooth.

A square rod-shaped mounting rod 82 is welded to the upper end of each groove cutting blade 81, and the mounting rod 82 is inserted into a mounting hole formed in the groove cutting blade mounting bracket 83 and fixed by screws. Have been. By loosening the screw and changing the fixing position of the mounting rod 82, the cut depth can be easily adjusted. Also, a large number of mounting holes 84, 84 are drilled in the support frame 6, and the holes drilled at both ends of the groove cutting blade mounting bracket 83 are penetrated and fixed by screws, By changing the positions of the mounting holes 84, 84 in the frame 6, the interval between the groove cutting blades 81, 81 and the rotating body 30 that is optimal for the soil quality of the cultivated soil can be freely selected.

FIGS. 11 and 12 illustrate the fourth embodiment. As shown in the figure, the same as in the second embodiment, except that the pair of left and right groove cutting blades 80, 80 is lower than the support frame 6 behind the drive wheel 3 and in front of the first rotating body 60. It is hanging in the direction. The second rotating body 30 has a difference that a rotating body having the same structure as that of the first embodiment is screwed.

As described above, the fourth embodiment has a groove cutting blade portion 80 and two rotating bodies 60 and 30 to form a more complete drainage groove. Can be.

FIG. 12 is an excavated sectional view of a drainage ditch formed according to the same embodiment. 121 is field cultivated soil, 125 is groove cutting blade
Notches 81, 81, a pulverizing section formed by the first rotating body 60, a digging section formed by the second rotating body 30, and a press forming section formed by the shaped float 70.

FIG. 13 shows a fifth embodiment. As shown in the figure, instead of the first rotator 60 and the second rotator 50 in the second embodiment, the rotators 30 and 30 of the first embodiment are attached, and the other configuration is the same as that of the second rotator. This is the same as the embodiment. The difference of the operation from the second embodiment is that the drainage grooves formed by excavation and diffusion by the first rotating body 30 are further
By performing the same operation as the first rotator by the second rotator 30, the unfinished portion of the first rotator 30 is removed by the second rotator 30.
Complements to form a more complete drain.

FIGS. 14 to 16 show a sixth embodiment. In this case, the first in the fifth embodiment
By changing the structure of the rotating body 30, the width of the first rotating body 40 is made equal to the width of the bottom surface of the drain groove by making the blade widths of the plurality of blades 42, 42 attached to the boss body the same. .
Then, the scattering prevention plate 43 and the diffusion blades 44, 44 were also reduced so as to have a diffusion amount corresponding to the excavation amount of the plurality of blades 42, 42 attached to the boss body 41. Other configurations are the same as in the fifth embodiment. The difference from the operation of the fifth embodiment is that the first rotating body 40 forms a rectangular drain groove in front view, and the second rotating body 30 penetrates, and the drain groove has a substantially inverted trapezoidal shape in front view. Is to form a wide portion. That is, a portion to be excavated is shared by the two rotating bodies 40 and 30, respectively, to form a drain ditch.

FIG. 16 is an excavated sectional view of a drainage ditch formed according to the sixth embodiment. 131 is a field cultivated soil, 132 is a digging part by the first rotating body 40, 133 is a digging part by the second rotating body 30, and 134 is a press forming part by the shaping float part 70.

As in the above-described various embodiments, a paddy field grooving machine having various characteristics is provided depending on the presence or absence of a groove cutting blade, the number of rotators installed (one or two), or the structure of the rotator. Could be provided.

The specific structure of the rotator (including the first rotator and the second rotator) is not particularly limited as long as it has the function required for each rotator in the present invention. Further, the specific structure of the groove cutting blade is the same as that of the rotating body.

[0040]

As described above, according to the rice field grooving machine of the present invention, not only can the drainage groove be formed on the ideal cross section of the inverted trapezoid by the rotary body of the vertical axis, but also the drainage groove can be formed by the rotary body. Since the mud flow is uniformly diffused over a wide area and no bulges are formed, good drainage in the field can be secured, and there is an excellent effect that a drainage groove that is difficult to collapse can be formed by addition of press forming by a shaped float.

In addition, since the rotating body and the groove cutting blade can be easily attached and detached, the rotating body most suitable for the soil quality of the cultivated soil can be selected for each field, and the groove cutting blade can be easily attached and detached. Thus, a continuous drainage groove having a sufficient depth and width can be formed without being affected by the soil characteristics of the cultivated soil.

[Brief description of the drawings]

FIG. 1 is a side view of a rice field grooving machine according to a first embodiment.

FIG. 2 is a perspective view of a rotating body in the rice field groove cutter.

FIG. 3 is a perspective view showing an attached state of a shaping float in the paddy field groove cutter.

FIG. 4 is a sectional view of a drainage ditch formed by the paddy field ditcher.

FIG. 5 is a side view of a rice field grooving machine showing a second embodiment.

FIG. 6 is a perspective view of a first rotating body in the rice field groove cutter.

FIG. 7 is a perspective view of a second rotating body in the paddy field grooving machine.

FIG. 8 is a sectional view of a drainage ditch formed by the paddy field ditching machine.

FIG. 9 is a side view of a rice field grooving machine showing a third embodiment.

FIG. 10 is a perspective view of a groove cutting blade in the rice field groove cutting machine.

FIG. 11 is a side view of a paddy field grooving machine showing a fourth embodiment.

FIG. 12 is a sectional view of a drainage ditch formed by the paddy field ditcher.

FIG. 13 is a side view of a rice field grooving machine showing a fifth embodiment.

FIG. 14 is a side view of a paddy field grooving machine showing a sixth embodiment.

FIG. 15 is a perspective view of a first rotating body in the rice field grooving machine.

FIG. 16 is a sectional view of a drainage ditch formed by the paddy field ditcher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engine 2 Main drive shaft support pipe 3 Running wheel 4 Running wheel drive gear part 5 Operating handle 10 Rotating body driving gear part 11 First rotating body driving gear part 12 Second rotating body driving gear part 30, 40, 50, 60 rotations Body 70 Shaping float 80 Groove cutting edge

Claims (3)

[Claims] 1. A paddy field provided with a traveling wheel drive gear portion at a front end of a main drive shaft support pipe in which a main drive shaft driven by an engine is provided, and having traveling wheels driven through the traveling wheel drive gear portion. In the power traveling vehicle, a rotator driving gear portion is provided at an intermediate portion of the main driving shaft support pipe behind the traveling wheel, and a rotator driving shaft is vertically provided below the rotator driving gear portion, and the rotator driving shaft is A rotating body for rough formation of grooves with a plurality of blades that cuts up cultivated soil is supported at the lower end by a support frame on the way, and at the upper end is spread with blades that discharge the raised mudflow to the surroundings. A plate is attached to each, and a shaping float that presses against the side of the rough groove is provided vertically from the support frame behind the rotating body, and an operation handle having a front end fixed to the main drive shaft support tube is provided. A grooving machine for paddy fields. 2. In the middle of the main drive shaft support pipe behind the running wheels,
2. The paddy field grooving machine according to claim 1, wherein two rotator driving gear sections are provided at appropriate intervals in front and rear so that two rotators can be mounted. 3. The paddy field groove cutting device according to claim 1, wherein a pair of left and right groove cutting blades are provided vertically below the support frame between the traveling wheel and the rotating body. Machine.