JP2008109901A - Furrow opening blade of paddy field furrow opener - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a furrow opening blade of a paddy field furrow opener causing little deposition of mud of a paddy field on the furrow opening blade to prevent the weight increase. <P>SOLUTION: The furrow opening blade 20 of a paddy field furrow opener for forming a nearly V-shaped furrow on a paddy field is provided with right and left side plates 21 to form the right and left faces of the furrow and a bottom plate 23 to form the bottom of the furrow, and an opening is formed above the right and left side plates 21. The opening of the right and left side plates 21 is covered with a cover 30. The cover 30 has a chevron-shaped protruding upward. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a grooving blade of a paddy grooving machine such as a riding type or a walking type.

Conventionally, as a self-propelled paddy field grooving machine, for example, a walking type paddy field grooving machine described in Patent Document 1 and a riding type paddy field grooving machine described in Patent Document 2 are known.
In the walking type paddy grooving machine described in Patent Document 1, an engine and a speed reducer are respectively attached to a rear end portion and a front end portion of a transmission shaft pipe extending in the front-rear direction. The rotational power of the engine is transmitted to the speed reducer via the transmission shaft in the transmission shaft pipe. A base end portion of a handle is fixed to an intermediate portion of the transmission shaft pipe, and the handle extends rearward and projects upward from the engine. A wheel is attached to the output shaft of the speed reducer, and the wheel is rotationally driven by the rotational power from the engine that is decelerated and transmitted via the speed reducer. A stay extending diagonally rearward is fixed to the transmission shaft pipe, and a culture plate (grooving blade) is attached to the rear end of this stay so that the front end side is higher than the rear end side. It has been.

  The earth plate has left and right side plate portions (side plate portions) for forming the left and right side surfaces of the groove, and left and right bottom plate portions (bottom plate portions) for forming the bottom surface of the groove, at least upward and rearward Has an open groove forming portion.

  And in order to perform grooving in a paddy field using this walking type paddy grooving machine, an operator advances the grooving machine while pushing down the handle downward at the rear of the grooving machine. Then, the pressing force acts as a pressing force of the culture plate against the soil surface, the bottom plate portion of the rear end portion of the culture plate is held at a predetermined depth, and the grooving machine advances, thereby the predetermined depth on the soil surface. Are formed.

  Further, in the riding paddy grooving machine described in Patent Document 2, engine-driven driving wheels (driving wheels) are provided on the distal end side of the frame, and grooving bodies (grooving members) are provided on the base end side of the frame. Further, a saddle is provided on the frame, and a handle is provided on the front side of the saddle. The groove cutting body is constituted by a rotating member having an inclined surface or a float body (grooving blade).

The rotating member as the grooved body is configured by joining a pair of left and right symmetrical dish-shaped disk bodies, and is provided with a convex outer peripheral portion for forming a groove.
Further, the float body as the grooved body includes left and right side plates that become narrower toward the front side in the traveling direction, and a bottom plate that closes and connects the lower ends of these side plates, and the front side of the bottom plate is inclined upward. A front inclined surface portion is formed, a substantially horizontal horizontal surface portion is formed on the rear side of the bottom plate, and a groove forming portion having at least an upper portion and a rear portion opened is provided.

  And, in order to perform grooving in paddy fields using this riding type paddy grooving machine, an operator rides over the saddle, and the left and right legs are arranged on the left and right of the drive wheel, while holding the handle The driving wheel is rotated by the rotational driving force of the engine, and the grooving machine is advanced by the driving wheel. Then, since the weight of the operator is supported by the drive wheel and the groove cutting body, the groove cutting body is pressurized, the groove cutting body is held at a predetermined depth, and the groove cutting body advances, thereby the soil surface. A groove having a predetermined depth is formed on the surface.

JP 2001-178202 A JP 2006-152710 A

However, in the walking type paddy grooving machine described in Patent Document 1, since the upper part of the cultivating plate (grooving blade) is opened, mud in the paddy field enters from above the cultivating plate during the grooving operation. The mud that has entered is accumulated in the cultivating plate, and the weight of the cultivating plate and therefore the weight of the paddy grooving machine is increased. For this reason, when lifting a paddy grooving machine by hand at the time of transportation or changing the direction, an operator's physical burden is large.
Moreover, in the riding type paddy field grooving machine described in Patent Document 2, when a float body (grooving blade) is used as the grooving body, the same problem as that of the above-mentioned culture plate occurs. On the other hand, when a rotating member is used as a grooved body, mud is difficult to accumulate, but the structure becomes complicated because of rotation, and the vertical dimension increases and the size increases.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a grooving blade for a paddy grooving machine in which mud from paddy fields is unlikely to accumulate on the grooving blade and hardly increases in weight.

  In order to achieve the above object, a grooving blade (20) of a paddy grooving machine according to claim 1 is a grooving blade (20) of a paddy grooving machine for forming a substantially V-shaped groove in a paddy field. And left and right side plate portions (21) for forming the left and right side surfaces of the groove, and bottom plate portions (23) for forming the bottom surface of the groove, and the left and right side plate portions (21). In the grooving blade (20) of the paddy grooving machine in which an opening is formed above, a cover (30) covering the opening of the left and right side plate parts (21) is provided. To do.

  The grooving blade (20) of the paddy grooving machine according to claim 2 is characterized in that, in the invention according to claim 1, the cover (30) is formed in a mountain shape protruding upward. .

  In addition, the code | symbol in the bracket | parenthesis in the above expresses the corresponding element in drawing for convenience, Therefore, this invention is not limited to description on drawing. The same applies to the description of “Claims”.

  According to the grooving blade of the paddy grooving machine according to claim 1, since the cover that covers the upper openings of the left and right side plate portions 21 is provided, mud in the paddy field enters from above the grooving blade. Therefore, it is possible to suppress the accumulation of mud in the grooving blade and the increase in the weight of the grooving blade and hence the paddy grooving machine. Thereby, when lifting a paddy grooving machine by hand at the time of transportation or turning, the physical burden on the operator can be reduced.

  Further, according to the grooving blade of the paddy grooving machine according to claim 2, since the cover is formed in a mountain shape protruding upward, mud is difficult to accumulate on the cover. The weight increase due to can be further suppressed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 are views showing a riding paddy grooving machine according to an embodiment of the present invention, FIG. 1 is a perspective view seen from the left rear, FIG. 2 is a left side view, FIG. 3 is a rear view. 4 to 10 are views showing the grooving blade of FIG. 1, FIG. 4 is a perspective view seen from the upper left rear side, and FIG. 5 is a perspective view seen from the lower right front side, 6 is a front view, FIG. 7 is a rear view, FIG. 8 is a left side view, FIG. 9 is a plan view, and FIG. 10 is a bottom view.

  As shown in FIG. 1 to FIG. 3, the riding paddy grooving machine includes a transmission shaft pipe 1 that is slightly higher on the rear side and extends obliquely in the front-rear direction. The transmission shaft pipe 1 also functions as a main body frame. An engine (prime mover) 2 and a speed reducer 3 are attached to the rear end portion and the front end portion of the transmission shaft pipe 1, respectively. The rotational power of the engine 2 is transmitted to the speed reducer 3 via a transmission shaft (not shown) in the transmission shaft pipe 1. The output shaft of the speed reducer 3 protrudes horizontally from the case of the transmission 3, and one driving wheel 4 is fixed to the output shaft (axle). The driving wheel 4 is rotationally driven by the rotational power from the engine 1 that is decelerated and transmitted via the speed reducer 3.

  The driving wheel 4 includes an annular outer ring 4b to which a plurality of lugs 4a are fixed, a hub (not shown) provided at the center and to which the output shaft of the speed reducer 3 is fixed, and the outer ring 4b and the hub. And a plurality of spokes 4d.

  A saddle 5 is provided on the upper side of the transmission shaft pipe 1. That is, the saddle 5 is fixed to an upper side of a horizontally extending saddle support portion 7 of a support member 6 made of a pipe, and a support portion (not shown) extending downward from the saddle support portion 7 and a transmission shaft pipe. A support portion (not shown) extending upward from 1 is connected so that the fixing position can be changed. By changing this fixed position, the height position of the saddle 5 can be changed in a plurality of stages (for example, three stages). The saddle 5 is positioned obliquely upward and rearward from the center of the driving wheel 4.

  The front side portion of the support member 6 is bent from the tip of the saddle support portion 7 and extends obliquely upward to the front to form a handle support portion 8. A handle 9 extending horizontally in a bar shape is attached to the upper end portion of the handle support portion 8 so that the position in the vertical direction can be adjusted, and grips 10 are provided at both ends of the handle 9. The handle 9 is located obliquely above and forward of the saddle 5 and is located obliquely above and forward from the center of the driving wheel 4.

  A throttle lever (not shown) is attached to the handle 9, and the throttle opening of the engine 2, that is, the output of the engine 2 is adjusted by this throttle lever. Further, a stop switch (not shown) is attached to the handle 9, and the current flow to the spark plug of the engine 2 is short-circuited by this stop switch, and the driving of the engine 2 is stopped.

  The saddle support portion 7 of the support member 6 is provided with a handle portion 11 used for lifting the paddy grooving machine and carrying it or changing its direction. The handle portion 11 extends horizontally around the saddle support portion 7 in a generally U shape. Further, a cover 13 that covers the left and right sides and the rear side of the rear upper half of the driving wheel 4 is attached to a plurality of support plates 12 provided on the left and right and rear ends of the saddle 5. At the front end of the cover 13, a leaf protection plate 14 is attached to cover the left and right sides and the front of the front upper half of the driving wheel 4.

  A stay 15 made of a pipe extending obliquely rearward and downward is fixed to the transmission shaft pipe 1, and a groove cutting blade 20 is attached to a substantially U-shaped support plate 16 fixed to the rear end portion of the stay 15. The front end side is attached with bolts 17 so as to be higher than the rear end side. The upper end portion of the stand 18 is rotatably attached to the upper end portion of the stay 15. The grooving blade 20 is located behind the driving wheel 4 and obliquely below the saddle 5.

  As shown in FIGS. 4 to 10, the groove cutting blade 20 has a left-right symmetrical structure in an arbitrary cross section except for an attachment portion, and is used to form a side surface of a substantially V-shaped paddy field groove. Left and right side plate portions 21, left and right protruding plate portions 22 projecting outward in the left-right direction from the upper end of the side plate portion 21, and left and right sides for forming the bottom surface of the groove provided at the bottom of the rear end portion of the groove cutting blade 20 Bottom plate portion 23 and left and right upward projecting plate portions 24 slightly projecting upward from the tip of the overhanging plate portion 22. Each of the left and right side plate portions 21, the overhang plate portion 22, the bottom plate portion 23, and the upper protruding plate portion 24 is formed by bending a single metal plate made of aluminum alloy or stainless steel.

  Each of the left and right side plate portions 21 is formed so that the dimension in the height direction becomes shorter toward the front side, and most of the lower end portions are formed so that these both side plate portions 21 are substantially V-shaped in cross section. It is abutted and arranged diagonally with the front side facing up. Of the lower end portions of the side plate portions 21, the butted portions except for the rear portion are overlapped and joined with a certain narrow dimension, whereby the joining portion 25 extending obliquely so that the front side is on the upper side is formed. Is formed.

  The left and right bottom plate portions 23 are provided only at the rear end portions of the lower ends of the left and right side plate portions 21. That is, a substantially triangular space extending toward the rear side is formed on the rear side of the joint portion 25 at the lower end portion of the both side plate portions 21, and the bottom plate portions are respectively formed from the lower ends of the left and right side plate portions 23. 23 protrudes toward the left and right inward and is located in this space. Each bottom plate portion 23 is formed in a substantially triangular shape that widens toward the rear side (however, the opposite corners on the rear side are formed in a round shape), and is positioned slightly lower as it goes to the rear side. So that it is a little inclined. A gap 26 is provided between the bottom plate portions 23.

  The left and right overhanging plate portions 22 are widened toward the rear side, and the front end portions of the two overhanging plate portions 22 are plate-like connecting members 27 whose both ends are fixed to the both overhanging plate portions 22 by welding. It is connected by. A plate-like mounting member 28 extending upward is fixed to the center of the upper surface of the connecting member 27, and the mounting member 28 and the support plate 16 are connected by a bolt 17, thereby cutting the groove. A blade 20 is attached (see FIG. 3). The rear end portions of both projecting plate portions 22 are connected by a turnbuckle 29. The turnbuckle 29 is positioned above the gap 26 between the bottom plate portions 23, and the operator can adjust the length of the turnbuckle 29 so that the turnbuckle 29 can be turned with respect to the dimension of the gap 26, that is, the front-rear direction. The distance between the left and right projecting plate portions 22 at the position of the buckle 29 is adjusted.

  A cover 30 is provided between the upper projecting plate portions 24. That is, both end portions of the mountain-shaped plate-like cover 30 protruding upward are fixed to the both upward protruding plate portions 24 by the bolts 31, respectively. The cover 30 is provided between the connecting member 27 and the turnbuckle 29 in the front-rear direction of the grooving blade 20, thereby covering most of the opening above the side plate portions 21.

  In order to perform grooving in a paddy field using this riding type paddy grooving machine, an operator rides over the saddle 5, the left and right leg portions are arranged on the left and right of the drive wheel 4, and the grip 10 of the handle 9. , 10, the driving wheel 4 is rotated by the rotational driving force of the engine 2, and the grooving machine is advanced by the driving wheel 4. Then, since the operator's weight is supported by the drive wheel 4 and the groove cutting blade 20, the groove cutting blade 20 is pressurized, the groove cutting blade 20 is held at a predetermined depth, and the groove cutting blade 20 moves forward. . As the grooving blade 20 advances, the soil in front of the grooving blade 20 is scraped to the left and right and discharged onto the soil surface of the paddy field. A substantially V-shaped groove is formed. In this substantially V-shaped groove, the side surface of the groove is formed by both side plate portions, and the bottom surface of the groove is formed by both bottom plate portions 20. Moreover, the soil pushed up on the soil surface in the vicinity of the upper end of the groove is diffused outward by the overhanging plate 22.

  In the grooving blade 20 of the riding type paddy grooving machine configured as described above, the cover 30 is provided between the upper projecting plate portions 24 and the opening portions above the both side plate portions 21 are covered. Therefore, it is possible to prevent the paddy mud from entering from above the grooving blade 20, so that the mud accumulates in the grooving blade 20, and the weight of the grooving blade 20 and hence the weight of the paddy grooving machine increases. The increase can be suppressed. As a result, the operator's physical burden can be reduced when lifting the paddy grooving machine by hand during transportation or turning. Furthermore, in this grooving blade 20, since the cover 30 is formed in the mountain shape which protrudes upwards, mud is hard to accumulate on the cover 30, and the weight increase by the mud of the grooving blade 20 can be suppressed more. In particular, in the case of a self-propelled paddy field grooving machine that moves forward by the drive wheel 4 such as this riding type paddy field grooving machine, the paddy field mud is sprung up by the drive wheel 4. Since it falls on the groove cutting blade 20 located at the rear, the effect of providing the cover 30 is great.

  In the above-described embodiment, the case where the present invention is applied to a riding paddy grooving machine has been described. However, the present invention is not limited to this, and can also be applied to a walking paddy grooving blade.

It is a figure which shows the riding type paddy field grooving machine concerning embodiment of this invention, Comprising: It is the perspective view seen from the left rear. FIG. FIG. It is a figure which shows the grooving blade of FIG. 1, Comprising: It is the perspective view seen from the left back upper side. It is the perspective view seen from the front right lower side. FIG. FIG. FIG. FIG. FIG.

Explanation of symbols

20 Groove cutting edge 21 Side plate portion 23 Bottom plate portion 30 Cover

Claims (2)

A grooving blade (20) of a paddy grooving machine for forming a substantially V-shaped groove in a paddy field,
The left and right side plate portions (21) for forming the left and right side surfaces of the groove, and the bottom plate portion (23) for forming the bottom surface of the groove, an opening above the left and right side plate portions (21). In the grooving blade (20) of the paddy grooving machine in which is formed,
A grooving blade for a paddy grooving machine, wherein a cover (30) is provided to cover the opening of the left and right side plate portions (21).   The grooving blade (20) of a paddy grooving machine according to claim 1, wherein the cover (30) is formed in a mountain shape protruding upward.

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