KR101535279B1 - Agricultural cutter blade - Google Patents

Abstract

An agricultural cutter blade according to the present invention comprises: a horizontal blade portion having a mounting hole and extending in a horizontal direction; And a plurality of vertical blades, each of which is provided at one end and the other end of the horizontal blades, and extends to be inclined downward with respect to the horizontal blades, wherein a vertical opening angle? Of the vertical blades with respect to the horizontal blades is 105 to 125 DEG.

Description

{AGRICULTURAL CUTTER BLADE}

The present invention relates to agricultural cutter blades which can be used in power-driven lawn mowers or crop harvesters.

Weeds grow naturally in the rice fields and field groves that have been planted or transplanted. Because weeds absorb the surrounding nutrients with their vigorous growth power, they inhibit the growth of the crops, so weeding for the farmers considering agricultural productivity became important agriculture in the year.

It is not easy for a person to remove the weeds of the rice field and the furrow in the agricultural railroad which lacks one hand. The herbicide, which has been used for a long time as a quick and easy herbicide, contributed to the increase of human food. On the other hand, extensive use of herbicides can lead to serious side effects such as soil contamination, destruction of surrounding ecosystems, and absorption of residual pesticides in humans. Furthermore, resistant weeds are promoting over-use of herbicides, and super weeds that do not die by several times the amount of seeds in the past have also been created, posing a threat to agriculture.

The Chongqing mower is an agricultural machine that directly removes or cuts weeds between the rice paddy fields and the furrows. It is designed to replace a person using a basketball directly. Chungyeong mowers are gradually getting attention as a herbicide method to overcome the dysfunctions and limitations of herbicides because they feed crops with air by supplying soil to soil by cutting and weaving soil with weeding.

The working machine for Chongqing weeding is a type of cultivator which is equipped with a sweep or rotary hoe behind a tractor that can be used for passenger cars and cuts shallowly around the roots of the weeds, (Walking type), which is equipped with a mowing or weeding blade and operated by a user while walking, and a method in which a user carries a walking cart with a power device for driving a meadow blade while walking (walking type) have. Chungyeong mowers that have a sowing date have the function of cutting, so they can also function as a crop harvesting machine.

On the other hand, these lawn mowers often have power cutter blades. The shape of the cutter blades and the shape of the cutter are the key factors determining the performance of the lawn mowers, and numerous improvements have been introduced. The double cutter blade for chalky weeding needs to be in a form that is easy to fundamentally remove weeds from cultivated crops and weeds. In addition, it is also important to increase the overall cutting efficiency from the various resistance appearing in the weeding process, for example, the cutting resistance or wear caused by the soil or water on the floor surface, and the buoyancy that the cutter blade receives during the rotation process.

It is an object of the present invention to provide an agricultural cutter blade in which the roots of weeds can be fundamentally removed and the cutting efficiency is improved.

Another object of the present invention is to minimize the abrasion of the cutter blade while facilitating the discharge of the flywheel while reducing the cutting resistance when the cutter blade is rotated.

Another object of the present invention is to provide a cutter blade capable of reducing the buoyancy acting to increase the overall resistance according to the rotation of the cutter blade.

Another object of the present invention is to propose a cutter blade that reduces the use of material of the cutter blade and improves durability.

In order to solve the above problems, an agricultural cutter blade according to the present invention includes: a horizontal blade portion having a mounting hole and extending in a horizontal direction; And a plurality of vertical blades, each of which is provided at one end and the other end of the horizontal blades, and extends to be inclined downward with respect to the horizontal blades, wherein a vertical opening angle? Of the vertical blades with respect to the horizontal blades is 105 to 125 DEG.

According to an embodiment of the present invention, the horizontal blade and the plurality of vertical blades may be integrally formed by bending a metal plate.

As an example related to the present invention, a grinding surface may be formed at the tip end in the rotation direction of the plurality of perpendicular blade portions.

As an example related to the present invention, the plurality of vertical blade portions may be arranged to be inclined so as to form a center-aligned angle? With respect to the tangent of the rotary trace of the plurality of vertical blade portions.

As an example related to the present invention, a concave-convex pattern may be formed on the horizontal blades.

According to an embodiment of the present invention, a cutout profile may be formed at a rear end portion of the rotational direction on at least one of the horizontal edge portion and the plurality of vertical edge portions.

According to an embodiment of the present invention, at least one of the horizontal blade and the plurality of vertical blades may further include a carbide tip detachably attached to a distal end of the rotating blade.

The present invention also provides an image forming apparatus, comprising: a horizontal blade portion having a mounting hole and extending in a horizontal direction; And a plurality of vertical blades which are respectively provided at one end and the other end of the horizontal blades and which are extended to be inclined downward with respect to the horizontal blades, and the plurality of vertical blades are formed on the tangent line of the rotary traces of the plurality of vertical blades Which is arranged obliquely at a centripetal alignment angle ([beta]) of 3 to 15 [deg.].

In this case, a grinding surface may be formed on the outer surface of the rotation direction distal end portion of the plurality of vertical blade portions.

The present invention also provides an image forming apparatus, comprising: a horizontal blade portion having a mounting hole and extending in a horizontal direction; And a plurality of vertical blades which are respectively provided at one end and the other end of the horizontal blades and extend to be inclined downwardly with respect to the horizontal blades, wherein the horizontal blades are provided with concave and convex patterns.

In this case, the concavo-convex pattern may be formed in a concentric pattern.

The present invention also provides an image forming apparatus, comprising: a horizontal blade portion having a mounting hole and extending in a horizontal direction; A plurality of vertical blade portions provided at one side end and the other end side of the horizontal blade portion and extending to be inclined downward with respect to the horizontal blade portion; And a cemented carbide tip detachably attached to a distal end portion in a rotating direction of the plurality of vertical blade portions.

In this case, a cutout profile may be formed at the rear end in the rotational direction of the plurality of vertical blades.

In one embodiment of the present invention, the plurality of vertical blade portions and the cemented carbide tip may be formed with fastening holes.

According to the agricultural cutter blade related to the present invention, the vertical blade portion curved toward the ground is a form that is fundamentally easy to remove even the root of the weed, and the vertical blade angle? Of the vertical blade portion with respect to the horizontal blade portion is 105 to 125 , It is possible to maximize the cutting amount (cutting efficiency) with respect to the running resistance.

As a related example of the present invention, the plurality of vertical blade portions are arranged obliquely with respect to the tangent of the rotary trace of the plurality of vertical blade portions at a centripetal alignment angle (?), And the discharge of the flywheel is easy, Wear of the cutter blade can be minimized.

As an example related to the present invention, it is possible to reduce the buoyancy, which is the force that the horizontal blades are trying to lift, in accordance with the rotation of the cutter blade, by applying the concave and convex to the horizontal blades, thereby reducing the cutting resistance as a whole.

As a related example of the present invention, the cutout profile is formed at the rear end of the plurality of vertical blade portions in the rotational direction, so that the use of the material of the cutter blade can be reduced and the blade can be detachably mounted And the wear resistance and durability can be improved.

1 is a perspective view of an agricultural cutter blade 100 according to a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of the cutter blade 100 of Fig.
3 is a cross-sectional view conceptually showing a state in which a weeder 10 equipped with the cutter blade 100 of Fig.
4 is a graph showing the herbicidal efficiency? According to the vertical opening angle? Of the cutter blade 100
5 is a plan view of an agricultural cutter blade 200 according to a second embodiment of the present invention.
6 is a front sectional view of the agricultural cutter blade 300 according to the third embodiment of the present invention
7 is a perspective view of an agricultural cutter blade 400 according to a fourth embodiment of the present invention.
8 is a plan view of the agricultural cutter blade 500 according to the fifth embodiment related to the present invention.
9 is an exploded perspective view of an agricultural cutter blade 600 according to a sixth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an agricultural cutter blade according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an agricultural cutter blade 100 according to a first embodiment of the present invention, and FIG. 2 is a sectional view of the cutter blade 100 of FIG. As shown in these drawings, the agricultural cutter blade 100 related to the present invention has a shape in which a horizontal blade portion 110 and a vertical blade portion 120 are provided as a whole. The horizontal blades 110 extend in the horizontal direction, and a mounting hole 111 is formed in the middle of the horizontal blades 110 so that the horizontal blades 110 can be inserted into the rotatable rotor. The vertical blade portion 120 is provided at one end portion and the other end portion of the horizontal blade portion 110 and extends in a downwardly inclined manner with respect to the horizontal blade portion 110. The horizontal blade portion 110 and the vertical blade portion 120 may be formed integrally by bending a metal plate material such as steel.

The vertical blade portion 120 is formed to have a constant vertical opening angle? With respect to the horizontal blade portion 110. The vertical opening angle? Is in the range of 105 to 125 degrees, and is determined through the relationship between the running resistance and the cutting amount, as described later.

3 is a cross-sectional view conceptually showing a weeding state using a weeder 10 equipped with the cutter blade 100 of FIG.

3, the cutter blade 100 according to the present invention is mounted on an agricultural lawn mower 10. The lawn mower 10 includes a work table 11 for transmitting power and a safety cover 12 provided at an end of the work table 11. The lawn mower 10 receives power from the work table 11, A cutter blade 100 is provided.

The safety cover 12 is constructed so as to prevent the weed W, water or soil from scattering during operation while securing safety from the rotating cutter blade 100 rotated horizontally with respect to the ground G. [ The safety cover 12 can be applied to a form in which a power device is plowed by a user while pushing the power device on a work cloth or a form attached to a working vehicle made of a riding or walking type for weeding. In terms of the working paper, the lawn mower 10 associated with the present invention may be suitable for use with water-borne weeds, but it may also be used for a variety of purposes, such as weeding of grassless fields or the like. In addition, the lawn mower 10 related to the present invention may be used for harvesting grains or feed grains unlike its name.

The safety cover 12 is provided with a pressure plate 13 and a buoyant plate 14. The safety cover 12 can cover the cutter blade 100 which is rotated horizontally with respect to the ground G from the structural plane and is shaped like a dome so as to provide a rotation space of the cutter blade 100 have. The safety cover 12 can be configured to have sufficient rigidity and durability as a portion for supporting the pressure plate 13 and the buoyancy plate 14. [ The safety cover 12 is designed to support the overall weight and maintain its shape and is shaped like a sledge blade to reduce resistance from water or floor.

The pressure plate 13 is coupled to the lower end of the front portion of the safety cover 12. Specifically, the presser plate 13 causes the presser plate 13 to press the weed when the weeder 10 advances. Further, since the pressure plate 13 is placed on the weed W lying down, it relieves the safety cover 12 from receiving a force to enter the floor as the cutter blade 100 rotates.

The buoyant plate 14 reduces the force that the safety cover 12 is forced to dig into the ground, such as on a person or the like. Further, when the workbench 11 is pressed, the buoyancy plate 14 serves as a fulcrum of the lever. Accordingly, if the worktable 11 is slightly pressed and advanced, the safety cover 12 is naturally reduced from falling into the ground or the water, and is easily moved without effort.

The cutter blade 100 has a "C" shape bent in the direction of the ground. As described above, the vertical blade 120 is formed to have a constant vertical spreading angle α with respect to the horizontal blade 110. The weed W is moved forward while pushing the weed W by the pressure plate 14 while advancing the furrow to remove the weighed weeds W with water. The support plate 14 helps to move the safety cover 12 between the water surface H and the ground G with proper resistance.

The rotating cutter blade 100 cuts and breaks the stem portion and the root R of the bent weed W at once. Therefore, the cutter blade 100 removes not only the stem but also the root R in a fundamental way in the removal of the weed W, and the weed W is crushed, so it is necessary to collect the weed W separately after weeding There is no.

4 is a chart showing the herbicidal efficiency? According to the vertical opening angle? Of the cutter blade 100. Fig. The herbicidal efficiency? Depending on the vertical opening angle? Of the cutter blade 100 can be defined as a cutting amount C such as weeds for the running resistance D. This herbicidal efficiency (η) appears at a vertical spreading angle (α) greater than 90 °. That is, as shown in the hatched portion of FIG. 4, the herbicidal efficiency (η) is relatively high in the range of 105 to 125 °. On the other hand, when the vertical opening angle α is 90 °, the maximum efficiency in the range of 105 ° to 125 ° is 50% or less.

5 is a plan sectional view of an agricultural cutter blade 200 according to a second embodiment of the present invention. In this example, the plurality of vertical blade portions 220 constituting the cutter blade 200 are arranged obliquely to form a centripetal angle? With respect to the tangent line of the traces of the plurality of vertical blade portions 220. The centripetal alignment angle (β) is the shape with the best cutting resistance in the range of 3 ~ 15˚, and the blade has less resistance and the discharge of fly ash is easy and the blade wear is the least. 5, a grinding surface 221 is formed on the outer surface of the tip ends of the plurality of vertical blade portions 220 in the rotational direction. The grinding surface 221 helps the scattered particles naturally scatter in the centrifugal direction as the cutter blade 200 rotates.

6 is a front sectional view of an agricultural cutter blade 300 according to a third embodiment of the present invention. The cutter blade 300 of the present embodiment also includes a horizontal blade portion 310 having a mounting hole 311 and extending in the horizontal direction and a plurality of vertical blade portions 320 extending to be inclined downwardly with respect to the horizontal blade portion 310 . However, the horizontal blade part 310 has a concave and convex pattern 312 formed thereon. The concave-convex pattern 312 may be formed concentrically, thereby reducing the generation of buoyancy during the rotation of the cutter blade 300, and consequently contributing to an improvement in cutting efficiency.

The concave-convex pattern 312 may be formed by embossing or rolling the horizontal blade 310, which is a plate material.

7 is a perspective view of an agricultural cutter blade 400 according to a fourth embodiment of the present invention.

The cutter blade 400 of this embodiment is provided with a grinding surface 421 at the tip end in the rotational direction of the plurality of vertical blade portions 420 and a cutout profile 425 at the rear end in the rotational direction. The cutout profile 425 is cut out in consideration of the maintenance of the rigidity and the direction of abrasion, except for the grinding surface 421 which is directly related to the cutting. Therefore, it contributes to the reduction of the material and accordingly the manufacturing cost can be reduced.

8 is a plan view of an agricultural cutter blade 500 according to a fifth embodiment of the present invention. In the cutter blade 500 of this embodiment, a grinding surface 513 is provided at the tip end in the rotating direction of the horizontal blade portion 510, and a cutout profile 515 is formed at the rear end in the rotating direction. That is, the cutout profile 515 can be formed in the horizontal blade portion 510 in addition to the vertical blade portion, and in this case, the saving effect of the material can be maximized.

9 is an exploded perspective view of an agricultural cutter blade 600 according to a sixth embodiment of the present invention. In the cutter blade 600 of this embodiment, a cemented carbide tip 630 is attached to the tip of the vertical blade portion 620 in the rotational direction. The cemented carbide tip 630 is made of a steel material having excellent wear resistance, and minimizes the wear of the material that will be generated when the cemented carbide tip 630 collides with soil or gravel. In addition, the cemented carbide tip 630 can reduce the use of other materials by applying the cutout profile 625, and the replacement period of the cutter blade 600 can be semi-permanent. The carbide tip 630 may be detachably attached to the vertical blade 620 and fastening holes 627 and 632 may be formed in the vertical blade 620 and the carbide tip 630 have.

The agricultural cutter blade described above is not limitedly applied to the construction and method of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

10: Mowing machine 11: Workbench
12: safety cover 13:
14: Buoyancy plate W: Weed
H: Sleep G: Ground
R: Roots of weeds
100, 200, 300, 400, 500, 600: Agricultural cutter blade
110, 210, 310, 410, 510, 610:
120, 220, 320, 420, 520, 620:
111, 311,: mounting holes 221, 421, 513: grinding surface
α: Vertical opening angle β: Centrifugal angle
312: concave-convex features 425, 515: cutout profile
630, 632: Fastening hole 630: Carbide cutting tip

Claims (6)

A horizontal blade portion having a mounting hole and extending in a horizontal direction; And
And a plurality of vertical blades provided at one end and the other end of the horizontal blades and extending to be inclined downward with respect to the horizontal blades,
Wherein the plurality of vertical blade portions are arranged to be inclined so as to form a centroidal alignment angle (beta) with respect to a tangent of a rotary trace of the plurality of vertical blade portions.
The method according to claim 1,
Wherein the horizontal blade portion and the plurality of vertical blade portions are integrally formed by bending a metal plate material.
delete The method according to claim 1,
Wherein at least one of the horizontal blade portion and the plurality of vertical blade portions has a cutout profile formed at a rear end portion in the rotational direction.
The method according to claim 1,
Further comprising a cemented carbide tip detachably mounted on a tip end of the plurality of vertical blade portions in the rotational direction.
The method according to claim 1,
And a grinding surface is formed at the tip end in the rotational direction of the plurality of vertical blades.

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