JP6882762B2 - Tillage claw - Google Patents

Description

The present invention relates to tillage claws. More specifically, it relates to a tilling claw that is attached to a puddling machine.

As conventional techniques for plowing claws, for example, Japanese Patent Application Laid-Open No. 2006-109787 (Patent Document 1), Japanese Patent Application Laid-Open No. 2007-74974 (Patent Document 2), Japanese Patent Application Laid-Open No. 2012-80901 (Patent Document 3), Kai 2016-116471 (Patent Document 4) is known. The "cultivating claw" described in Patent Document 1 is a rotating claw in a tilling claw in which a mounting base 1, a vertical blade portion 2 made of a flat plate, and a horizontal blade portion 243 made of a curved plate are integrally formed. When the surface whose normal is the rotation axis of the claw axis S is used as the side surface, the curve start horizontal distance L from the vertical line passing through the center of the mounting base 1 in the side view to the blade edge of the curve start portion F is the curve curvature radius. In the side view blade edge shape up to the lateral tip position Q of the horizontal blade portion 24 blade edge, which is smaller than the minimum curved radius of curvature r1 which is the minimum value of r, from the rotation axis So of the rotary claw axis S to the lower end of the blade edge. The blade edge distance R is continuously changed so as to have a maximum blade edge distance R2 at an intermediate position of the horizontal blade portion 3. "

The "cultivating claw" described in Patent Document 2 describes that the "cultivating claw 1 has a vertical blade portion 10 and a horizontal blade portion 20 that continuously extend from a mounting base portion 3 attached to the tilling claw shaft 60, and the vertical blade portion 10 The horizontal blade portion 20 is curved in the direction opposite to the rotation direction from the horizontal blade portion 20 to the horizontal blade portion 20. The position R2 where the maximum turning radius Rm of the tilling claw 1 is obtained and the position where the maximum cutting width H1 is obtained. A straight line extending from the position R2 having the maximum turning radius Rm to the tip surface 22 of the lateral blade portion 20 between the position R2 having the maximum turning radius Rm and the position L1 having the maximum cutting width H1. The portion 25 is provided, and the blade advanced insertion angle formed with the cultivated soil surface at the position R2 having the maximum turning radius Rm is set in the range of 50 ° to 55 °. ”

The "cultivating claw" described in Patent Document 3 describes that the "cultivating claw 1 has a vertical blade portion 10 and a horizontal blade portion 20 that continuously extend from a mounting base portion 3 attached to the tilling claw shaft 60, and the vertical blade portion 10 The horizontal blade portion 20 bends in the direction opposite to the rotation direction from the to the horizontal blade portion 20, and the horizontal blade portion 20 bends to one side with respect to the vertical blade portion 10. The vertical blade portion 10 inclines to one side with respect to the mounting base portion 3. The bending start portion 11 of the vertical blade portion 10 is attached to the tilling claw shaft 60, and the claw length in the side view in the direction of the claw shaft axis from the line segment passing through the center of the tilling claw shaft and the center of the mounting base 3 to the tip of the claw. When the total length of the claw is L, it is located near 1/4 of the total length of the claw L toward the mounting base side, and the bending start portion 23 of the lateral blade portion 20 is closer to the tip side than half of the total length L of the claw. The cross-sectional shape of the tip portion of the lateral blade portion 20 is formed by being convexly curved in the same direction as the bending direction of the lateral blade portion 20 that is curved to one side. " ..

The "cultivating claw" described in Patent Document 4 is a "cultivating claw whose base is attached in the radial direction around the axis of the claw shaft and is rotated to cultivate the soil, and is attached to the claw shaft in a state of being attached to the claw shaft. , A straight blade part consisting of a flat plate extending from the base, a horizontal blade part consisting of a flat surface extending from the straight blade part by being inclined or curved to one side, and a flat surface extending from the horizontal blade part to one side. It has an orthogonal blade part, is curved from the straight blade part to the horizontal blade part in the direction opposite to the rotation direction, and has a blade part on the front side in the rotation direction from the straight blade part to the horizontal blade part and the orthogonal blade part. The plane of the orthogonal blade portion is inclined from the front side to the rear side with respect to the rotation direction toward the center of rotation. ”

Japanese Unexamined Patent Publication No. 2006-109787 JP-A-2007-74974 Japanese Unexamined Patent Publication No. 2012-80901 Japanese Unexamined Patent Publication No. 2016-116471

All of the "cultivating claws" described in Patent Documents 1, 2 and 3 are "curved from the vertical blade portion 10 to the horizontal blade portion 20 in the direction opposite to the rotation direction, and the horizontal blade portion 20 is curved to one side. "Or," The tip portion bends from the vertical blade portion 10 to the horizontal blade portion 20 in the direction opposite to the rotation direction, and the horizontal blade portion 20 bends to one side with respect to the vertical blade portion 10. " It is curved with respect to the base. However, during the puddling work, the soil crushability was limited, and the amount of soil that the tiller claws moved was limited.
Therefore, the conventional puddling machine using the tilling claw has a problem that it is necessary to repeatedly perform the overlapping work many times in the same field, and it is necessary to work at a low speed. Further, the "cultivating claw" described in Patent Document 4 has an orthogonal blade portion formed of a flat surface extending from the horizontal blade portion to one side, improving soil crushability and improving the amount of soil that the tilling claw carries around. , It is possible to work quickly. However, further improvement in performance is required.

An object of the present invention is to improve the soil crushability of the tillage claw, improve the amount of soil that the tillage claw carries around, enable high-speed work, and reduce overlapping work at the same location. is there.

Tilling claws of claim 1 of the present invention, the mounting base in the axial circumference of the tilling claws shaft mounted radially, a tilling claws for cultivating the soil by being rotated, the plane plate extending from the front Symbol mounting base a vertical blade portion formed of a flat plate-shaped horizontal blade portion extending bent inclined on one side from the Tateha unit, the tilling claws axis parallel to the axis plane extending at one side from the lateral edge portions and a quadrature blade portion made of, along with being curved in the rotational direction opposite to the direction from the front polygonia c-aureum portion to the transverse edge portion, from the front polygonia c-aureum portion of toward the lateral edge portions and the orthogonal blade portion has a blade portion in the rotational direction front side, the a fold starters line of the lateral edge portion, the orthogonal blade portion of the folding line for said Yokoha portion is substantially parallel to, bending the pre-Symbol transverse cutting unit for the Tateha portion start start line to a straight line passing through the center of the axis and the mounting base portion of the tiller pawl axis and inclined at 12 degrees to 22 degrees angle toward the rotation direction rear side, bending of the lateral cutting portion The dimension from the line to the center of the orthogonal blade is the bending start line of the horizontal blade and the end of the blade from the vertical line when the straight line passing through the axis of the tilling claw shaft and the center of the mounting base is a vertical line. The relationship is about 1.5 times the horizontal dimension to the intersection with the edge.
The height from the bottom edge of the blade portion of the orthogonal blade portion to the tip of the edge of the blade section, the axis of the tilling claws axis from one side of the mounting base to the tip of the orthogonal blade section 1/2 to 1/3 relationship der heart dimension is, the maximum rotational radius of the normal to the outermost end when rotating the tilling claws shaft in a state attached to the tilling claws shaft the angle between the orthogonal blade section is tilling claws characterized the relationship der Rukoto of 38 degrees to 48 degrees angle.

The tillage claw according to claim 2 of the present invention is characterized in that the horizontal blade portion has a flat plate-shaped flat portion and is bent at an angle of 29 to 39 degrees with respect to the vertical blade portion. The tillage claw according to claim 1.

Also, tilling claws of claim 3 of the present invention, when a straight line passing through the center of the axis and the preparative Tsukemoto portion of the tilling claws axis and vertical line, the edge of the blade portion of the orthogonal blade section the height dimension from the tip to the upper end of the orthogonal blade portion, a dimension of approximately 2.3 times the width of the mounting base, the lower edge of the blade portion of the end edge of the cutting portion height up to the tip, according to claim 1, characterized in that the lower edge of the blade portion is 1 / 2.5 to 1 / 3.5 of the height to the upper end of the perpendicular blade unit Or the tilling claw according to claim 2.

Also, tilling claws according to claim 4 of the present invention, the dimension in the axial direction of the tilling claws shaft to the tip of the orthogonal blade section from one side of the mounting base, wherein the equal to or less than 95mm The tillage claw according to any one of items 1 to 3.

According to the present invention, it is possible to improve the soil crushability of the tillage claw, improve the amount of soil that the tillage claw carries around, increase the work speed, and reduce the overlapping work at the same place. And.

(A) is a side view of a used state attached to the substitute scraper of the embodiment according to the embodiment of the present invention, and (b) is a plan view.

An embodiment of the present invention will be described with reference to FIG. The case of the holder type will be described for the tillage claw of this practical example.

FIG. 1A is a side view of the tillage claw in the axial direction of the tillage claw shaft o1 attached to the rotatable tiller claw shaft o1. The tilling claw 1 is held and attached to a holder 11 fixed to the tilling claw shaft o1. The holder 11 of this example has a rectangular hole for inserting the tilling claw 1 facing the outer peripheral direction, and a bolt or the like is inserted into the mounting hole 21 through which the tilling claw 1 is inserted and penetrated in the axial direction of the tilling claw shaft o1. Insert the fastening member and fasten. The tilling claw shaft o1 is provided with a large number of holders radially in the axial direction, and the tilling claw 1 is attached to form a tilling rotor. In the description of this example, the axial view of the tillage claw shaft o1 of the tillage claw 1 will be described as a side surface.

The tilling claw 1 is formed in a plate shape, and is attached to a mounting base 2 attached to the holder 11 of the tilling claw shaft o1, a vertical blade portion 3 continuously provided on the mounting base 2, and the vertical blade portion 3. It has a horizontally provided horizontal blade portion 4 and an orthogonal blade portion 5 formed of a plane parallel to the tilling claw axis o1 axis extending unilaterally from the horizontal blade portion 4, and the vertical blade portion 3 is provided with respect to the mounting base portion 2. The horizontal blade portion 4 is formed so as to be curved in the direction opposite to the rotation direction indicated by the arrow Y shown in FIG. 1 (a), and the horizontal blade portion 4 is further formed in the axial core direction of the tillage claw shaft o1 (FIG. In No. 1, the orthogonal blade portion 5 is provided so as to be inclined toward the front side), and the orthogonal blade portion 5 extends further toward the front side from the horizontal blade portion 4 to form an orthogonal blade portion 5 formed of a plane parallel to the tillage claw axis o1 axis. Further, a blade portion 6 having a constant width is continuously provided at the rotary outer peripheral side edge portion of the vertical blade portion 3, the horizontal blade portion 4, and the orthogonal blade portion 5. The blade portion 6 is double-edged, but may be single-edged. As the tillage claw 1 rotates, the edge 6a of the vertical blade portion 3 is cut into the tillage soil, and the edge 6a is curved rearward in the rotation direction in an arc shape so that weeds and other contaminants do not get entangled. Is formed.

The bending start line p1 of the horizontal blade portion 4, which is the switching position from the vertical blade portion 3 to the horizontal blade portion 4, is a straight line 20 passing through the axis of the tilling claw shaft o1 and the center of the mounting base 2. At this time, the vertical line 20 is inclined by 12 degrees to 22 degrees (α) toward the rear side in the rotation direction, that is, toward the direction away from the tilling claw axis o1. Further, the bending start line p1 of the horizontal blade portion 4 and the bending line between the horizontal blade portion 4 and the orthogonal blade portion 5 are substantially parallel.

The dimension L from the bending start line p1 of the horizontal blade portion 4 to the center of the orthogonal blade portion 5 is the vertical line 20 when the straight line passing through the axis 1a of the tilling claw shaft o1 and the center of the mounting base 2 is defined as the vertical line 20. The relationship is about 1.5 times the horizontal dimension P from the vertical line 20 to the intersection of the bending start line p1 of the horizontal blade portion 4 and the edge 6a of the blade portion 6. The dimension is preferably about ± 5 mm of the standard dimension.

The orthogonal blade portion 5 extends from one side surface D of the mounting base 2 to the tip of the orthogonal blade portion 5 with respect to the height dimension h1 from the lower end of the edge 6a of the blade 6 to the tip 6b of the edge of the blade 6. It is about 1/2 to 1/3 of the dimension H in the axial direction of the tilling claw shaft o1. The height dimension h1 is about 1 / 2.5 to 1 / 3.5 of the height dimension h2 from the lower end of the edge 6a of the blade portion 6 to the upper end of the orthogonal blade portion 5.
Further, the height dimension h3 from the tip of the edge 6a of the blade portion 6 of the orthogonal blade portion 5 to the upper end of the orthogonal blade portion 5 is about 2.3 times the width dimension 2L of the mounting base portion 2 and is acceptable. The range is about ± 5 mm. As a result, the cut cultivated soil is partially rotated in the rotational direction by the orthogonal blade portion 5, and a part of the cultivated soil is blown to the ground leveling plate or the rotor cover on the rear side and collides with each other, and is finely crushed to improve the soil crushability. By setting the dimension H in the axial direction of the tilling claw shaft o1 from one side surface of the mounting base 2 to the tip of the orthogonal blade portion 5 to 95 mm or less, the tilling resistance is reduced and the vibration during tilling is reduced. be able to.

The horizontal blade portion 4 has a flat plate-like flat portion, and is bent at a bending angle θ of 29 degrees to 39 degrees with respect to the vertical blade portion 3. The horizontal blade portion 4 is provided with a flat portion without increasing the bending radius of the boundary portion between the vertical blade portion 3 and the orthogonal blade portion 5, so that the cut cultivated soil is laterally moved and compressed, and the orthogonal blade portion 4 is quickly orthogonalized. It is designed to be moved to the part 5 side.

The mounting base 2 has a rectangular cross section, and the portion inserted into the holder 11 has a constant thickness and width. The present invention can be applied to the mounting base 2 not only for the holder type mounting of this example but also for the flange type mounting.

The vertical blade portion 3 is formed continuously from the mounting base portion 2 and is gradually curved in the direction opposite to the rotation direction Y with respect to the vertical line 20 which is the center line of the mounting base portion of the mounting base portion 2. The curvature is smoothly formed so that the radius of curvature on the mounting base 2 side is small on both the outer peripheral side and the inner peripheral side of the rotation, and the tip side of the orthogonal blade portion 5 is large. As a result, impurities and the like are not caught on the tilling claw 1, and the plow-in performance is improved. The developed shapes of the horizontal blade portion 4 and the orthogonal blade portion 5 before the curved molding are shown by a two-dot chain line.

The upper part of the tip of the orthogonal blade portion 5 is formed in a mountain shape composed of a long side 5a and a short side 5b which are long in the vertical direction and short in the horizontal direction, as shown by the two-dot chain line showing the unfolded state. Due to this shape, the amount of rotation of the cut soil is properly maintained to improve the soil crushability, and the tillage resistance is reduced to reduce the tillage vibration.

In this example, the maximum turning radius Ra to the outermost end when the tilling claw shaft o1 is rotated with the tilling claw 1 attached is set to about 190 mm. The outermost end position is a position near the boundary between the orthogonal blade portion 5 and the horizontal blade portion 4. Further, the angle β formed by the normal of the maximum turning radius Ra and the flat surface portion of the orthogonal blade portion 5 is set to about 38 degrees to 48 degrees.

The tillage claw 1 of this example is made of SUP6 and has a predetermined hardness by heat treatment or the like to improve wear resistance. Further, the wear resistance can be further improved by coating the wear-resistant material on the blade portion 6 by thermal spraying or the like.

The operation of the tillage claw 1 will be described. When the tilling claw shaft o1 to which the tilling claw 1 is attached is rotated, the soil is cut by the blade portion 6 of the vertical blade portion 3 of the tilling claw 1 and bites into the soil. Then, it is sequentially cut by the blade portion 6 on the side of the horizontal blade portion 4. The lateral side of the soil cut by the vertical blade portion 3 is moved diagonally and laterally by the horizontal blade portion 4, is compressed and crushed, and is further moved to the orthogonal blade portion 5 side, and is further moved to the orthogonal blade portion 5 and is a flat portion of the orthogonal blade portion 5. Is inclined by an angle β to the rear side in the rotation direction with respect to the normal of the maximum turning radius Ra, and a part is carried around in the rotation direction by the orthogonal blade portion 5 and crushed, and a part is scattered to the rear side. It collides with the cover covering the upper and rear parts and is crushed, and the soil is efficiently crushed into small pieces in a short time.

The blade portion 6 provided on the rotation outer peripheral side edge side of the vertical blade portion 3 to the horizontal blade portion 4 and the orthogonal blade portion 5 gradually reverses the rotation direction Y with respect to the vertical line 20 which is the center line of the mounting base of the mounting base 2. It is curved in the direction, and the curvature is smoothly formed so that the radius of curvature on the mounting base 2 side is small on both the outer peripheral side and the inner peripheral side of rotation, and the tip side of the lateral blade portion 4 is large. As a result, the rotation of the tillage claw shaft o1 causes the contaminants contained in the tillage soil to move into the soil without being caught by the edge of the blade portion and to be easily embedded in the soil, thereby improving the plow-in performance.

The present invention can be applied to a tilling claw of a tilling work machine which is mounted behind a traveling machine such as a tractor and performs a tilling work.

1 Tillage claw 2 Mounting base 20 Vertical line 21 Mounting hole 3 Vertical blade 4 Horizontal blade 5 Orthogonal blade 6 Blade p1 Bending start line

Claims (4)

Attached preparative Tsukemoto portion radially to the axis circumference of tilling claws axis, a tilling claws for cultivating the soil by being rotated,
A vertical blade portion made of a flat plate extending from the preparative Tsukemoto unit,
A flat plate-shaped horizontal blade that is bent and extended to one side from the vertical blade,
And a quadrature blade portion formed of the tilling claws axis parallel to the axis plane extending at one side from the lateral edge portion,
It is curved in the direction opposite to the direction of rotation from the vertical blade portion to the horizontal blade portion, and also
The blade portion is provided on the front side in the rotation direction from the vertical blade portion to the horizontal blade portion and the orthogonal blade portion.
And fold starters line of the horizontal blade portion with respect to the Tateha section, the orthogonal blade portion of the folding line for said Yokoha portion is substantially parallel,
Fold starters line of the lateral edge portion, compared straight line passing through the center of the axis and the preparative Tsukemoto portion of the tilling claws axis and inclined at 12 degrees to 22 degrees angle toward the rotation direction rear side ,
Dimensions to the orthogonal blade section from the center fold starters line of the lateral edge portion, when the straight line passing through the center of the axis and the preparative Tsukemoto portion of the tilling claws axis and vertical line, from said said vertical straight line about 1.5 times the relation of the horizontal dimension of the fold starters line of the lateral edge portions and to the intersection with the edge of the blade portion,
The height from the bottom edge of the blade portion to the tip of the edge of the blade portion of the orthogonal blade section, the tilling claws axis from one side of the intake Tsukemoto portion to the tip of the orthogonal blade section 1/2 to der relation 1/3 of the axial dimension is,
The angle formed by the normal of the maximum turning radius to the outermost end when the tilling claw shaft is rotated while attached to the tilling claw shaft and the orthogonal blade portion is a relationship of 38 degrees to 48 degrees. A cultivated claw characterized by that. The tillage claw according to claim 1, wherein the horizontal blade portion has a flat plate-shaped flat portion and is bent at an angle of 29 to 39 degrees with respect to the vertical blade portion. The tillage when a straight line passing through the center of the axis and the preparative Tsukemoto portion of the nail shaft has a vertical line, the height from the tip of the edge of the blade portion of the orthogonal blade portion to the upper end of the orthogonal blade section dimension, the dimension of about 2.3 times the width of the mounting base, the height from the bottom edge of the blade portion to the tip of the edge of the blade section, the end of the cutting portion The tilling claw according to claim 1 or 2, wherein the height dimension from the lower end of the edge to the upper end of the orthogonal blade portion is 1 / 2.5 to 1 / 3.5. Dimension in the axial direction of the tilling claws axis from one side of the intake Tsukemoto portion to the tip of the orthogonal blade section, according to any one of claims 1 to 3, characterized in that not more than 95mm Tillage claws.

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