JPH0657779A - Jig for soil cutting, and soil-cutting machine employing the same - Google Patents

Abstract

PURPOSE:To make soil cutting work executed easily and satisfactorily even by unskilled workers. CONSTITUTION:Recessed parts 16 for positioning steel soil-cutting claws 14 to be fitted and bolt holes 18 through which two bolts 17, 17 provided in projection to the rear side of the soil-cutting claws 14 are inserted are formed scatteredly to a claw-supporting base plate 13 that is detachably attached to a revolving drive shaft 20. The bolts 17 inserted through the bolt holes 18 are tightened with nuts 19 and are fitted into the recessed positioning parts 16. Then, the soil-cutting claws 14 are detachably attached to the claw-supporting base plate 13 with each of the tips of the cutting claws made to face at a right angle the shaft axis of the revolving drive shaft 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil cutting jig for cutting the surface of a soil pile continuous underground wall and a soil cutting machine using the jig.

[0002]

Conventionally, a backhoe bucket is generally used to cut the surface of a soil pile continuous underground wall.
While bending the work arm and swinging the bucket, so-called slope excavation was performed, and cutting was performed with a claw attached to the bucket.

[0003]

However, it requires skill to bend and extend the working arm so that the claws attached to the bucket follow the surface of the continuous soil pile underground wall, and to swing the bucket. In the case of a serious pilot, there is a drawback that the nails may accidentally bite into the soil pile continuous underground wall and damage the wall, and the finish condition and work efficiency tend to depend on the pilot's ability, and by any means personal There was a drawback that the difference in quality made the finish accuracy unstable and the work efficiency was likely to decrease.

The present invention has been made in view of the above circumstances, and the soil cutting jig according to the first aspect of the present invention enables even an inexperienced operator to easily and well cut the soil. An object of the present invention is to provide what can be performed at a low cost, and a jig for cutting a soil according to the invention as claimed in claim 2 is capable of easily and favorably cutting a soil on a corner portion. With the goal.

[0005]

In order to achieve the above-mentioned object, a soil cutting jig according to a first aspect of the present invention comprises a claw support substrate removably attached to a drive rotary shaft,
Positioning recesses for inserting and positioning iron soil cutting claws and bolt holes penetrating bolts protruding on the back side of the soil cutting claws are dispersedly formed, and the bolts inserted into the bolt holes are tightened with nuts. Then, the soil cutting claw is detachably attached to the claw support substrate while being fitted into each of the positioning recesses and having the blade edge orthogonal to the rotation axis of the drive rotation shaft.

In order to achieve the above-mentioned object, the soil cutting working machine of the invention according to claim 1 is provided with a working arm on the traveling machine body, and a tip of the working arm is provided with a horizontal or vertical direction. A first support bracket is provided so as to be swingable around a first axis, and a second axis is provided around the second axis in a vertical direction or a horizontal direction orthogonal to the first axis on the first support bracket. Is provided, and a drive swing mechanism is interposed between the work arm and the first support bracket, and between the first support bracket and the second support bracket, and the second support bracket has a drive motor. And the drive rotation shaft according to claim 1 is interlockingly connected to the drive motor.

[0007]

According to the structure of the soil cutting jig of the present invention as set forth in claim 1, the nail supporting substrate is driven and rotated while the soil cutting nail is being applied to the surface of the soil pile continuous underground wall to be cut. In the state of being fitted and positioned in the positioning recess, the blade of the soil cutting claw can be rotationally moved to scrape along the surface of the soil pile continuous underground wall to cut the soil.

Further, according to the structure of the soil cutting working machine of the second aspect of the present invention, in the corner portion of the soil pile continuous underground wall, the cutting edge of the soil cutting claw hits the surface intersecting with the previously cut surface. As described above, when moving the soil cutting jig, the second supporting bracket is swung with respect to the first supporting bracket, so that the blade tip of the soil cutting claw can be moved without changing the posture of the working arm. Can be effectively applied to the surface of the soil pile continuous underground wall to be cut.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is an overall side view showing an embodiment of a soil cutting working machine according to the present invention, in which a traveling machine body 1 provided with a pair of left and right crawler type traveling devices 1a can be turned around a longitudinal axis. Is provided with a swivel base 2, an operating cabin 3 is provided on the swivel base 2, a first working arm 4 is provided on the swivel base 2 so as to be vertically swingable, and a first working arm is provided. A second work arm 5 is swingably connected to the work piece 4, and a work attachment 7 having a soil cutting jig 6 is swingably connected to the tip of the second work arm 5. A hydraulic cylinder 8 is interposed between the swivel base 2 and the first work arm 4, and between the first work arm 4 and the second work arm 5.

As shown in the exploded perspective view of FIG. 2, the front view of FIG. 3, and the partially cutaway side view of FIG. Iron nail cutting claws 14 ... Are detachably attached to a claw support substrate 13 having a circumference integrated by welding. A large-diameter bolt 11 having a quadrangular head is fitted into a quadrangular opening 10a in the center of the positioning plate 10, and is attached to the substrate 9 by tightening a double nut 12, and the positioning plate 10 is positioned and fixed to the substrate 9. .

The positioning plate 10 is formed with dispersed openings 15 ... In which the soil cutting claws 14 are fitted and positioned so that they are inclined by a predetermined angle with respect to the radial direction. Positioning recess 16 depending on the surface
On the other hand, bolt holes 18 penetrating the two bolts 17, 17 protruding from the rear surface side of the soil cutting claw 14 are formed at the positions corresponding to the positioning recesses 16 ... Each of the soil cutting claws 14 ... Is fitted into the positioning recess 16 and the bolts 17, 17 inserted into the bolt holes 18, 18 are tightened with nuts 19 to be attached to the claw support substrate 13.

A cup-shaped member 21 is provided at the tip of the drive rotary shaft 20.
And the flange 22 is integrally connected to the outer peripheral edge of the cup-shaped member 21, and the drive rotary shaft 20 is jointly fastened by using the bolt 17 and the nut 19 for attaching the soil cutting claws 14 and 22 described above. It is configured to be attached to the claw support substrate 13.

As shown in the partially cutaway side view of the main part of FIG. 4, the first support bracket 23 is swingably attached to the tip of the second working arm 5 about the first axis P1 in the horizontal direction. And a second axis P2 in the vertical direction orthogonal to the first axis P1 is provided on the first support bracket 23 thereof.
A second support bracket 24 is provided around the second work arm 5 and the drive swing mechanism between the second work arm 5 and the first support bracket 23, and between the first support bracket 23 and the second support bracket 24. The hydraulic cylinder 25 is installed.

A hydraulic motor 26 as a drive motor is attached to the second support bracket 24, and the drive rotating shaft 20 of the soil cutting jig 6 is interlockingly connected to the drive motor 26 so that the work attachment 7 is attached.
Is configured. An electric motor may be used as a drive motor instead of the hydraulic motor 26.

With these constructions, as shown in the schematic plan view of FIG. 5, at the corner portion C of the continuous underground wall W of the soil pile, when transitioning from one wall surface W1 to the other wall surface W2 orthogonal to it. , The first and second work arms 4 and 5 are bent and extended, and the first support bracket 23 is attached to the second work arm 5 and the first support bracket 23 is attached to the second support bracket 24. The support brackets 23 are driven and swung to separate the soil cutting claws 14 from the one wall surface W1 and then contact the other wall surface W2 to drive the soil cutting claws 14 in a posture along the wall surface W2. It can be rotated and work efficiency can be greatly improved.

In the above embodiment, the claw support substrate 13 is constructed by integrally welding the positioning plate 10 to the substrate 9 by welding. However, for example, one plate having a relatively large thickness is used, and the plate of the plate is used. It is also possible to disperse the above-described positioning recesses 16 on one surface and form the positioning recesses 16 ... Bolt holes 18, 18 respectively.

Further, according to the present invention, the first support bracket 23 is provided on the second work arm 5 so as to be rotatable around a vertical axis, and the first support bracket 2 is provided.
Alternatively, the second support bracket 24 may be provided so as to be rotatable around the horizontal axis.

In the above embodiment, the hydraulic cylinder 25 is used to drive and oscillate each of the first and second support brackets 23 and 24. However, various drive oscillations such as a hydraulic motor and an electric motor are performed. A dynamic mechanism can be adopted.

The soil cutting jig according to the present invention can be applied to the case where the refractory coating material adhered to the wall of the skeleton is cut and peeled off for any repair.

[0021]

According to the soil cutting jig of the invention of claim 1, since the soil is cut by drivingly rotating the soil cutting claws around the drive rotation axis, the soil cutting claws can be formed on the continuous soil pile underground wall. It only has to be applied to the surface, even an inexperienced worker can cut the soil well,
It is possible to ensure stable finishing accuracy and improve work efficiency.

Moreover, since the soil cutting claw is made of iron, it is attached to the claw support substrate while being fitted in the positioning recess, so that the reaction force applied to the soil cutting claw by cutting is also applied to the side surface of the positioning recess to allow the bolt to Concentration can be avoided and durability can be improved, and when the cutting edge etc. is damaged, the soil cutting claw can be replaced individually, for example, when using industrial diamond for the cutting edge. It is extremely cheap in comparison.

According to the soil cutting working machine of the invention of claim 2, the corner portion of the continuous soil pile underground wall,
In the so-called entry corner, the soil cutting jig can be smoothly moved from one surface intersecting with the other to the other surface, and the cutting of the soil on the corner can be performed easily and satisfactorily. This has made it possible to further improve work efficiency.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of a soil cutting work machine according to the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of a soil cutting jig according to the present invention.

FIG. 3 is a front view of a soil cutting jig.

FIG. 4 is a partially cutaway side view of a work attachment.

FIG. 5 is a schematic plan view showing a working state for a corner portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Traveling body 4 ... 1st work arm 5 ... 2nd work arm 6 ... Soil cutting jig 13 ... Claw support substrate 14 ... Soil cutting claw 16 ... Positioning recess 17 ... Bolt 18 ... Bolt hole 19 ... nut 20 ... drive rotating shaft 23 ... first support bracket 24 ... second support bracket 25 ... hydraulic cylinder as drive swing mechanism 26 ... hydraulic motor as drive motor P1 ... first shaft core P2 ... second Axis of

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiromi Sachida 5-8-19 Motomachi-dori, Chuo-ku, Kobe City Inui Construction Co., Ltd. (72) Inventor Shoji Ide 5-8-19 Moto-machi-dori, Chuo-ku, Kobe No. Stock Company Inui Construction

Claims (2)

[Claims] 1. A positioning recess for inserting and positioning an iron soil cutting claw on a claw support substrate detachably attached to a drive rotating shaft, and a bolt penetrating a bolt projecting on the back side of the soil cutting claw. Holes are formed in a dispersed manner, the bolts inserted into the bolt holes are tightened with nuts, and fitted into the positioning recesses, respectively,
A soil cutting jig, wherein the soil cutting claw is detachably attached to the claw support substrate in a state where a cutting edge is orthogonal to a rotation axis of the drive rotation shaft. 2. A traveling arm is provided with a working arm, and a tip of the working arm is provided with a first support bracket that is swingable around a first axis in the horizontal or vertical direction. 1 support bracket for the first
A second supporting bracket is provided around a second axial center in the vertical direction or the horizontal direction orthogonal to the axial center of the working arm, the first supporting bracket, and the first supporting bracket and the first supporting bracket. A soil cutting operation in which a drive swing mechanism is interposed between each of the two support brackets, a drive motor is attached to the second support bracket, and the drive rotation shaft according to claim 1 is interlocked with the drive motor. Machine.