JP3515976B2 - Subsoiler working machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subsoiler working machine, and more particularly, to a reduction in working friction with soil, suppression of soil adhesion, and further promotion of excavation of excavated soil after groove formation. Sub-soiler working machine to do.

[0002]

2. Description of the Related Art In a field, fracturing, treading of a tractor due to long-term use, formation of a board due to use of a rotary tiller, and natural hardening of soil due to permeation of rainwater have progressed. It tends to grow downwards. Particularly in pastures, a hard layer gradually grows due to trampling by livestock such as cows, resulting in obstructing the root extension of the pasture. In the field where the surface is hardened, the cultivation soil layer is apparently formed by cultivating only the surface by the rotary tiller, but the soil layer is formed in the lower layer of this soil layer. Poor (poor water permeability) and poor breathability, even a little rain irrigates the surface of the field, causing the soil layer to run off and the crops not being able to grow roots. Often you will not be able to expect. Therefore, not only crushing the plow bed layer using the subsoiler work machine, but also crushing the subsoil layer existing below it to make the plow layer water-permeable, and further, in the subsoil layer. By supplying air, the soil is activated and the drainage and water permeability are improved.

[0003]

From the purpose of this working machine, the purpose is to crush the subsoil layer at the deepest position, but in the subsoil crushing work at a deep position, the load applied to the tractor is It is extremely large, which forces the use of large horsepower tractors. This sub-soiler work machine pulls a knife-like knife through the soil with a force greater than the resistance, so the resistance varies depending on the soil environment, but it is a work that has a larger load than surface work. There is no.

Therefore, in order to reduce the load as much as possible, the shape of the knife has been improved. However, depending on the soil, especially in volcanic ash soil, the soil is centered around the knife like clay work. There was a problem that the soil adhered to the soil, and the soil became soil, and the knife became a soil bar, which increased resistance and made it impossible to continue the work. In particular, this phenomenon is remarkable in the field in the Kanto loam layer, and even if it becomes impossible to use the subsoiler working machine, some measures are being demanded. Even if a sub-soiler working machine can be used, the soil after being excavated by a chisel or knife to form a groove is pushed up to the surface, and the soil rises in front of the knife as the work progresses, and this Occasionally, it accumulates between the frame of the working machine and the surface of the field, which may hinder the work.

The present invention has been made in view of the above circumstances, and makes it difficult for soil to adhere to a knife of a subsoiler working machine, and furthermore, soil excavated and raised on the surface hinders work. The purpose is to prevent it from becoming.

[0006]

The subsoiler working machine according to the present invention, which has been made to achieve the above-mentioned object, comprises:
In a subsoiler working machine configured to attach a knife to a working machine frame and performing subsoil crushing work, along a front edge of the knife, a metal bracket attached to the knife and the metal bracket, A friction reducing member attached to the knife along a front edge of the knife via a metal bracket, wherein the friction reducing member has a curved excavation curved surface that faces a work progressing direction toward a lower end portion of the knife. Is formed, a discharge curved surface is formed which is twisted toward the side in the work advancing direction toward the upper end of the knife, and along with the work progress of the knife pierced in the subsoil, this excavation curved surface is formed. While excavating the soil along with the work, pushing the excavated soil to the surface of the field while moving it laterally along the discharge curved surface of the friction reducing member. It is characterized in that.

Here, it is preferable that a reverse curved surface is formed at the upper end of the discharge curved surface of the friction reducing member. Further, it is preferable that a chisel for crushing subsoil is fixed at the tip position of the knife in the working direction. Further, the friction reducing member is preferably a resin molded product.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
Or, description will be added to FIG. First, in these attached drawings, reference numeral 10 indicates the whole of a two-claw type sub-soiler working machine (hereinafter referred to as a working machine), and the working machine 10 is a hollow frame 11 extending in the working width direction.
The frame 11 has a pair of flange plates 12 extending at the left and right ends of the frame 11 in the work advancing direction, that is, the so-called front-back direction, and sandwiching the frame 11 from the vertical direction.
Are arranged, and the front end portion of the flange plate 12 is fixed to the front and rear of the frame 11 by four bolts 13. The other end of each of the flange plates 12 extends rearward to form an extension 12A, which is sandwiched between the extension 12A and 12A from above and below and has a U-shaped cross section. Spacers 14 are formed,
The vertical plate portions of the spacers 14 are arranged such that they are perpendicular to the flange plate 12, and the vertical plate portions of the two spacers 14 and 14 face each other. Are fixed and arranged with an interval S corresponding to.

A through hole 12B is formed in the flange plate 12 at a portion corresponding to the space S between the spacers 14, 14 so that a knife described later can be inserted therethrough. It forms a knife space for accommodating the upper end of the knife to be described. The flange portion of the spacer 14 is an extension portion 12A of the flange plate 12.
It is fixed with a bolt 14B. A common window 14A is bored in the spacers 14, 14 so that the pin can be inserted to fix the knife with the pin 16.

As shown in FIG. 3, the knife 20 has a width (length) along the work advancing direction, and a width (length) in the left-right direction in the work advancing direction is a width along the work advancing direction. Although smaller than (length), the blade edge portion is slightly thicker than the conventional knife, and the friction reducing member 22 is attached to the front edge 21 corresponding to the blade edge portion via the metal bracket 23. They are attached and fixed with bolts 24 at appropriate intervals. That is, the friction reducing member 22 is
As is apparent from FIG. 4, bolts 24 are attached to the metal bracket 23 from the excavation curved surface 22Y and the discharge curved surface 22X described later.

The metal bracket 23 is defined by the shape of the friction reducing member 22, and has a shape surrounding the back surface and the side surface of the friction reducing member 22. The edges are prevented from being unevenly worn as much as possible when a change occurs.
The friction reducing member 22 is formed along the shape of the knife 20 and has a curve from the upper end to the lower end slightly forward, and is located at the lowermost end of the knife 20, in other words, at the most distal end in the working direction. A chisel 25 for crushing the subsoil is fixed, and a wing 26 for increasing the crushing effect is connected behind the chisel 25.

In particular, the friction reducing member 22 and the bracket 23 thereof are twisted toward the side in the work advancing direction near the upper end portion, in other words, a discharge curved surface 22X is formed. As the soil is moved upward along the movement, the soil can move away from the plane including the knife 20 while escaping to the side. Along the discharge curved surface 22X, the bracket 23 also moves along the friction reducing member 2
It has a shape along the curved surface to accommodate 2. In the case of the two claws, the discharging direction of the discharging curved surface 22X is bilaterally symmetrical, and the discharging soil can be discharged toward the outside of the working width. Therefore, in the case of the one-claw type, it may be twisted on any side in the work advancing direction as long as it has a shape capable of preventing clogging of the soil.

The excavation curved surface 22Y has a gentle curved surface which is oriented toward the lower end portion of the knife 20 as it goes toward the lower end portion of the knife 20. While excavating the soil along the excavation curved surface 22Y and pushing the excavated soil to the surface of the field as the work progresses, the soil is moved laterally along the discharge curved surface 22X near the upper end as described above. It is shaped so that

As a result, in actual work, soil at a deep position is excavated and pushed up along the friction reducing member 22 first along the excavation curved surface 22Y, and then up to the field surface, and further, subsequently. The soil is discharged laterally along the discharge curved surface 22X in the work advancing direction. Moreover, even if the soil rises due to excavation, the friction reducing member 22
By moving the soil laterally in the traveling direction by the guide of the discharge curved surface 22X formed on the side, more specifically, by moving the soil to the outside of the working width, the soil swells like a mountain in the space between the lower surface of the frame and the field and is clogged It is possible to prevent the soil from being swelled and to discharge the soil that tends to rise to the side in the traveling direction. Therefore,
In the case of the one-claw sub-soiler working machine, the friction reducing member may be freely twisted in the left and right directions because the friction reducing member may be discharged to either the left or right side.

This will be easier to understand by comparing with a conventional sub-soiler working machine. When the discharge curved surface 22X is not formed in the friction reducing member 22, the soil excavated along the excavation curved surface 22Y is lifted, but the soil is lifted in the plane including the knife 20. Upon hitting the frame that constitutes the machine, it accumulates in the space between the frame and the field, grows as a mass of soil, and as the work progresses, it becomes bloated and hinders the work progress, but according to the present invention, Such inconvenience in work can be solved.

The friction reducing member 22 has high wear resistance, and has no adhesiveness even in the case of soil such as the Kanto loam layer which easily adheres to an iron knife, or has an adhesive property. However, a resin molded product such as polyethylene, which has extremely low adhesion and excellent flexibility in molding, is used, and a structure such as bolt mounting is adopted so that it can be replaced even if it wears. ing.

Further, as is clear from FIG. 3, the width (length) of the friction reducing member 22 in the left-right direction is formed larger than the width (length) of the knife 21 in the left-right direction (front edge). It is possible to form a groove having a wider width as compared with the case of forming the groove only with the knife 21, and it is possible to accelerate the discharge of excavated soil,
The soil can be activated and the drainage and water permeability can be further improved.

In the above description, the friction reducing member 22 is attached along the front surface of the knife 21 in the work advancing direction, but the friction reducing member 22 is attached to the knife 2.
It can also be fixed to the left and right sides of 0. In this case, the side friction reducing member 22 is smaller than the width of the friction reducing member 22 on the front surface of the knife 20. Furthermore, although the case where the friction reducing member is attached via the bracket has been described, it may not be necessary depending on the soil to be worked.

In addition, unlike the Kanto loam layer, in the case of soil that does not easily adhere to the knife, the friction reducing member 22 has little meaning. In this case, the friction reducing member 22 is made of metal instead of plastic. It is possible to ensure discharge of excavated soil by replacing it with a mold plate. In this case, the same shape as the friction reducing member 22 is used to form the excavation curved surface 22Y and the discharge curved surface 22X.
An inverted curved surface 22Z is formed at the upper end of X to increase the lateral inversion of the discharged soil by the twisted portion of this inverted curved surface, and an effective inversion function as a mold plate can be expected.

[0020]

As is apparent from the above description, according to the subsoiler working machine of the present invention, the subsoil layer is also crushed so that the plow layer has water permeability. By supplying air, the soil can be activated and the drainage and water permeability can be improved. In particular, the soil excavated during the work can be attached to the knife as little as possible, and the friction with the soil can be made as small as possible, so that the tractor can have a margin. Further, since the friction reducing member is designed to allow the excavated soil discharge direction to escape laterally from the plane including the knife, the discharged soil does not hinder the progress of the work, and the work can be performed efficiently. .

[Brief description of drawings]

FIG. 1 is a side view of a subsoiler working machine of the present invention.

FIG. 2 is a plan view of the subsoiler working machine of the present invention.

FIG. 3 is a perspective view of a knife portion of the subsoiler working machine of the present invention.

FIG. 4 is a detailed perspective view of the friction reducing member of the sub-soiler working machine of the present invention.

5 is a partially enlarged perspective view of a portion indicated by reference numeral 5 in FIG.

FIG. 6 is a partially enlarged perspective view of a portion denoted by reference numeral 6 in FIG.

[Explanation of symbols]

10 Sub-soiler work machine 11 frames 12 Flange plate 13 volt 14 Spacer 20 knife 21 Leading edge 22 Friction reducing member 22X discharge curved surface 22Y Excavation curved surface 22Z inverted surface 23 Bracket 24 Volts 25 chisel

─────────────────────────────────────────────────── ───Continued from the front page (56) References JP-A-6-339301 (JP, A) SAIKAI HEI 1-149901 (JP, U) SHIKKO 47-25281 (JP, Y1) US Patent 3762483 (US) , A) US Patent 4257792 (US, A) US Patent 4185699 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01B 13 / 08,13 / 10 A01B 15 / 08,15 / Ten

Claims (4)

(57) [Claims] 1. A subsoiler working machine configured to attach a knife to a working machine frame and performing subsoil crushing work, comprising: a metal bracket attached to the knife along a front edge of the knife; and the metal bracket. And a friction reducing member attached to the knife along the front edge of the knife via the metal bracket, wherein the friction reducing member is arranged in the work advancing direction toward the lower end of the knife. The excavation curved surface of the curved surface is formed, and the discharge curved surface that is twisted to the side in the work advancing direction is formed toward the upper end of the knife. While excavating soil along this excavation curved surface and pushing the excavated soil up to the field surface as the work progresses, soil is excavated along the discharge curved surface of the friction reducing member. Sabusoira working machine, characterized in that moving laterally. 2. The subsoiler working machine according to claim 1, wherein an inverted curved surface is formed at an upper end portion of the discharge curved surface of the friction reducing member. 3. The subsoiler working machine according to claim 1, wherein a chisel for crushing subsoil is fixed at a tip position of the knife in a work advancing direction. 4. The sub-soiler working machine according to claim 1, wherein the friction reducing member is a resin molded product.