JPH0742241Y2 - Tillage nail - Google Patents

Description

[Detailed description of the device]

[Industrial applications]

TECHNICAL FIELD The present invention relates to a tilling claw used by being attached to a tilling shaft of a rotary tiller, and more particularly to a tilling claw having improved entanglement.

[Prior art]

The applicant of the present invention, as a tilling claw, has a vertical blade portion that gradually turns away from the base end side toward the tip side toward the rear of the rotation so as to have a entanglement property. It has been proposed that the mold has a bent side blade portion, and the side blade portion was not provided with a entanglement property.

[Problems to be solved by the device]

Therefore, for example, when many straw culms and the like are scattered in the field to be cultivated, the straw cules and the like do not entangle because the vertical blade portion has a entanglement property, but the horizontal blade from the vertical blade portion is horizontal. There was a problem that straw culms and the like were entangled in the bent portion to the blade portion and the blade edge side of the horizontal blade portion to increase the tilling resistance. The present invention has been made to solve the above problems.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is configured such that the vertical blade portion 3 of the tilling claw 1 attached to the tilling shaft and used for the tilling work is curved so as to be gradually distant from the base end side toward the tip side toward the rear side. In the tillage claw 1 having a horizontal blade portion 4 formed by bending the tip portion of the vertical blade portion 3 at a right angle to one side at a right angle and forming a horizontal blade portion 4 while having a entanglement property. Along the rotation direction of the claw 1, a rake face 6 is formed which forms a smooth arc having a concave surface on the inner side and a convex surface on the outer side. The rake surface 6 is formed continuously from the vertical blade portion 3 to the horizontal blade portion 4. The edge of the horizontal edge 4 of the edge 7 thus formed is characterized in that the tip side of the blade edge is retracted to form a confounding blade edge 8 having a venting property.

[Action]

With the above-described structure, the tilling claw of the present invention has the vertical blade portion and the horizontal blade portion both having a entanglement property, so that the cultivating nail is prevented from being entangled with straw culms and the like. There is little resistance and efficient work can be done. Moreover, since the rake face is formed on the horizontal blade part, the machinability and reversibility of soil are improved.

【Example】

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In FIGS. 1 and 2, the tilling claw indicated by reference numeral 1 is
A mounting base 2, a vertical blade 3, and a horizontal blade 4 are provided. The mounting base 2 has a mounting hole 5 to be mounted on a mounting box provided on a cultivating shaft (not shown) via bolts and nuts. The vertical blade portion 3 is provided, and is curved so as to be gradually away from the base end side, which is continuous from the mounting base portion 2, to the tip end side with respect to the rotation direction, and thus has an exit angle. A lateral blade portion 4 is formed on one side of the tip portion of the vertical blade portion 3 by bending it into an L shape at an angle close to a right angle. The horizontal blade portion 4 is formed with a smooth arcuate rake face 6 that is curved so as to be curved so as to be curved along the direction of rotation so that the inner side of rotation is concave and the outer side of rotation is convex. Further, a single-edged blade edge 7 is provided in the front portion of rotation from the vertical blade portion 3 to the tip of the horizontal blade portion 4, and the blade edge 7 of the horizontal blade portion 4 is formed substantially along the turning radius of the pawl. Further, the blade edge 7 side of the horizontal blade portion 4 forms an arc-relief edge 8 which is recessed in a circular arc gradually distant from the base portion side to the tip in the claw rotation direction. In addition, although the horizontal blade portion 4 of the above-mentioned plowing claw 1 has been described with respect to the embodiment in which the vertical blade portion 3 is integrally bent and formed by forging, the vertical blade in which the mounting base portion 2 and the vertical blade portion 3 are integrally formed is described. The horizontal blade portion 4 is welded to the tip of the portion 3, or the worn horizontal blade portion 4 is detachable so that it can be replaced, or the attachment angle of the horizontal blade portion 4 to the vertical blade portion 3 can be adjusted. It may be configured as. Further, since the smooth arcuate rake face 6 formed on the horizontal blade portion 4 of the tilling claw 1 is heavily worn, the rake face 6 of the horizontal blade portion 4 and the predetermined range of the vertical blade portion 3 are particularly resistant to wear. It may be coated with an abradable alloy or may be laminated with abrasion resistant materials of different materials. 3 and 4 show other embodiments of the present invention, respectively, the one shown in FIG. 3 has a greater degree of curvature of the vertical blade portion 3 and a larger eccentricity angle than the one shown in FIG. It is similar to that of FIG. 1 except that it is large. Also, the one shown in FIG. 4 has a wider width from the attachment base 2 to the horizontal blade portion 4 than those shown in FIGS. 1 and 3, so that the attachment base 2 can be attached to the flange 10 provided on the tiller shaft 9. The configuration is the same as that of FIGS. 1 and 3 except that In the tilling claw 1 configured in this way, the tilling work is performed by being attached to the tilling shaft and rotating. And, for example, when the tillage axis reverses, that is, when upcut tillage,
When the center of rotation of the tilling shaft is rotated so as to be positioned below the surface of the tillage field, the tiller claw 1 cuts the soil into slices as the soil is cut from the bottom of the tiller toward the ground surface, The soil is cracked near the ground surface and is thrown backward while being rotated (reversed) in the direction opposite to the tilling axis while sliding on the rake face 6 of the horizontal blade portion 4. At this time, a part of the cut soil mass is thrown backward without leaving the cultivated soil held in the rake face 6 of the horizontal blade portion 4 and passing through the inside of the claw rotation locus in the working area of the tillage rotary. Deep plowing is performed in front of the tillage axis with almost no soil accumulation. In addition, since straw culms, weeds, and the like scattered on the surface of the cultivated field are given to the vertical blade portion 3 and the horizontal blade portion 4 of the tilling claw 1, both of which have entrepreneurial properties, Not only the vertical blade portion 3 but also the bent portion from the vertical blade portion 3 to the horizontal blade portion 4 and the horizontal blade portion 4 itself are cast rearward without being entangled, and are scooped into the cultivated soil while spreading.

[Effect of device]

As described above, according to the tilling claw of the present invention, the horizontal blade portion 4
Since the rake face 6 is curved so that the inner side of the rotation is concave and the outer side of the rotation is convex, the rake face 6 is formed so as to be along the direction of rotation. Since the property is good, it is possible to perform excellent rotary tilling work. Further, the horizontal blade portion 4 is provided with a blade edge 7 formed continuously from the vertical blade portion 3 to form a defluxing blade edge 8 having a tip side retracted and having a defluxing property. Since the blade edges of No. 4 are both concealed, the straw culms scattered in the cultivated field do not entangle the plowing claws to increase the tilling resistance, and the straw culms are also entangled. Therefore, it is not necessary to remove it, and efficient cultivating work can be carried out.

[Brief description of drawings]

FIG. 1 is a side view of a tilling claw showing a first embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view of a tilling claw showing a second embodiment, and FIG. It is a side view of the tillage claw attached to the flange showing the embodiment of FIG. 1 ... Plowing claw, 2 ... Mounting base, 3 ... Vertical blade, 4 ...
Horizontal blade, 5 ... Mounting hole, 6 ... Rake surface, 7 ... Blade edge,
8: entanglement edge, 9: cultivating shaft, 10: flange.

Continuation of the front page (72) Takeshi Kobashi, 684 Nakamata, Okayama-shi, Okayama Kobashi Kogyo Co., Ltd. (72) Toshiyuki Asakura 684, Nakamata, Okayama-shi, Okayama (72) Inventor, Ishida Kazuhiro 684 Nakatate, Okayama, Okayama Prefecture Kobashi Industrial Co., Ltd. (72) Noboru Fujiwara No. 684 Nakatate, Okayama, Okayama Prefecture Kobashi Industrial Co., Ltd. (72) Inventor, Masatoshi Fujiwara 684 Nakatsubashi, Okayama, Okayama Industrial Stock Company (56) References Japanese Patent Publication S44-10927 (JP, B1) Japanese Publication Scholar 38-10804 (JP, B1)

Claims (1)

[Scope of utility model registration request] 1. A vertical blade portion (3) of a tilling claw (1) which is attached to a tilling shaft and used for tilling work, is curved so as to be gradually distant from a base end side toward a tip side toward a rear side, and has a entanglement property. In the tilling claw (1) having a horizontal blade portion (4) formed by bending the tip end portion of the vertical blade portion (3) near one side at a right angle to form an L-shape, the horizontal blade portion (4) is provided. ), A rake face (6) is formed which is curved along the rotation direction of the tillage claw (1) with a concave inner surface on the inner side and a convex outer surface on the outer side. A convoluted blade edge (8) having a tip-side retracts and has a converging property to the blade edge of the lateral blade portion (4) of the blade edge (7) continuously formed from (3) to the lateral blade portion (4). ) The plowed claw characterized by having formed.