JPH1054152A - Concrete cutting machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To efficiently perform a work for cutting a concrete surface mechanically without manual work of an operator. A concrete cutting machine in which a front surface of a body frame (3) is pressed against a concrete surface (1) by a work arm (5) of a power shovel (4) (heavy machine) and a cutter unit (7) provided on the frame (3) performs a cutting operation on the concrete surface. 7 is provided with a roll cutter 8 rotatably supported in a cantilever manner with its axis substantially perpendicular to one side surface of the frame 3, and is arranged so as to extend over one side surface of the frame 3. 3, a slide mechanism for moving the cutter 8 at a right angle to the axis of the cutter 8 in a plane parallel to the front surface of the cutter 3, an advancing / retracting mechanism for moving the unit 7 closer to and away from the concrete surface 1, and a swivel for rotating the frame 3 with respect to the arm 5. And a mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a concrete cutting machine.

[0002]

2. Description of the Related Art In general, when the surface of a concrete surface of a concrete structure has deteriorated, it is necessary to cut the deteriorated surface to a sound surface and then repair it. Was performed manually by a worker using a disk grinder or the like.

[0003]

However, the task of manually cutting the entire concrete surface of a concrete structure for a long time in a poor working environment in which a large amount of cutting dust is generated is extremely severe. There was a problem that the burden on the members was great both physically and mentally.

[0004] In addition, there is a problem that the efficiency of manual work by the worker is low, and a great deal of labor and time are required.

[0005] In particular, in a manual operation performed by a worker using a disc grinder or the like, the workability is poor when a corner portion formed by two concrete surfaces is cut, and the corner portion is formed so that a uniform cut surface can be obtained. Was difficult to cut.

The present invention has been made in view of the above circumstances, and has as its object to provide a concrete cutting machine capable of mechanically and efficiently performing a work for cutting a concrete surface without manual operation of an operator. .

[0007]

According to the present invention, a front surface of a main body frame is pressed against a concrete surface by a work arm of a heavy machine connected to a rear surface of the main body frame, and the concrete surface is cut by a cutter unit provided on the main body frame. A concrete cutting machine for performing an operation, wherein the cutter unit includes a roll cutter that is cantilevered so as to be rotatable with its axis oriented substantially perpendicular to one side surface of the main body frame, and is provided on one side surface of the main body frame. A slide mechanism for moving the cutter unit in a plane parallel to the front surface of the main body frame at a right angle to the axis of the roll cutter, and moving the cutter unit close to and away from the concrete surface. A reciprocating mechanism, and a turning mechanism for turning the body frame with respect to the work arm of the heavy equipment, respectively. It is characterized in that there.

Therefore, according to the present invention, when cutting a concrete surface, the front surface of the main body frame is pressed against the concrete surface by using the work arm of the heavy equipment, and then the roll cutter is driven to move the cutter unit by the reciprocating mechanism. Advance in the direction approaching the concrete surface, press the roll cutter against the concrete surface to start cutting, and in this state, slide the cutter unit by the slide mechanism to the axis of the roll cutter in a plane parallel to the front surface of the main body frame. The concrete surface is cut to a predetermined cutting depth by the roll cutter while reciprocating at a substantially right angle.

When the cutting operation on the concrete surface at the predetermined pressing position is completed as described above, the cutter unit is retracted by the advance / retreat mechanism in a direction away from the concrete surface to stop driving the roll cutter, and the pressing position of the main body frame is stopped. After that, the same cutting work as above was performed, and thereafter, every time the cutting work at each pressing position was completed, the cycle of shifting the pressing position of the main frame and restarting the cutting work was repeated, and the entire area of the concrete surface was repeated. Should be cut.

At this time, since the cutter unit is arranged to protrude from one side of the body frame and the roll cutter is rotatably supported by a cantilever, it is possible to cut the corner formed by the two concrete surfaces. In this case, it is possible to perform the cutting while moving the end of the roll cutter on the side opposite to the support to the very edge of the valley line at the corner and moving along the valley line.

In the case where the main body frame itself is in the way and cannot be cut in the current posture, the main body frame is turned by the turning mechanism with respect to the work arm of the heavy equipment, and the position of the cutter unit is changed. good.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention. In the drawings, reference numeral 1 denotes a concrete surface forming a side wall of a concrete structure 2, and 3 denotes a power shovel 4 described later.
FIG. 2 shows a box-shaped main body frame whose front surface is pressed against the concrete surface 1 by a working arm 5 of a (heavy machine). It is connected to.

A cutter unit 7 for cutting the concrete surface 1 is arranged on one side of the main body frame 3 so as to protrude therefrom. The cutter unit 7 includes a roll cutter 8, a gear box 9 and a cutter drive motor 10. The roll cutter 8 is cantilevered so that only the end on the side of the main body frame 3 is rotatable with its axis centered in a direction substantially perpendicular to one side surface of the main body frame 3.

That is, the end of the roll cutter 8 on the side of the main body frame 3 is pivotally supported by a gear box 9.
A cutter drive motor 10 for rotating the roll cutter 8 is integrally attached to the gear box 9.

Here, the cutter driving motor 10 has a relatively short length so as not to protrude outward from the end of the roll cutter 8 on the opposite side of the support, and the cutter drive motor 10 So that it is located in the retracted position.

On the other hand, a slide mechanism 11 for moving the cutter unit 7 in the plane parallel to the front surface of the main body frame 3 at a right angle to the axis of the roll cutter 8 is provided in the main body frame 3. An advance / retreat mechanism 12 for moving the cutter unit 7 toward and away from the concrete surface 1 and a turning mechanism 13 for turning the main frame 3 with respect to the work arm 5 of the heavy equipment are provided as described in detail below. .

The slide mechanism 11 includes a pair of toothed pulleys 14, 15 arranged at a required interval in a slide direction in which the cutter unit 7 is to be moved (a direction indicated by an arrow A in FIG. 3), and a pair of toothed pulleys 14, 15. An endless toothed belt 16 wound around the pulleys 14 and 15 and a unit moving motor 17 connected to one of the toothed pulleys 14 so as to be able to transmit torque.

The advancing / retracting mechanism 12 is slidably engaged with a guide rail 18 extending parallel to the toothed belt 16 and is mounted at an appropriate position on the toothed belt 16. A unit tilting motor 20 integrally attached to the gearbox 19, and an opening protruding from the gearbox 19 and transmitting to one side of the main body frame 3 so that torque of the unit tilting motor 20 is transmitted through the gearbox 19; Slit 21
And a support shaft 22 that is integrally connected to the gear box 9 of the cutter unit 7 via the support shaft 22 and supports the entire cutter unit 7.

Further, the turning mechanism 13 is connected to a frame turning motor 24 and a connecting tool 6 connected to the tip of the working arm 5 of the power shovel 4.
And a gear box 23 that transmits the torque of No. 4.

The work arm 5 of the power shovel 4 will be briefly described. The work arm 5 includes a base arm 27 which is connected to a revolving body 26 mounted on an upper portion of a traveling body 25 by a pin so as to be able to descend, and The distal arm 28 is pivotally connected to the distal end of the proximal arm 27 by a pin. The lowering arm of the proximal arm 27 is operated by a hydraulic cylinder 29. The operation is performed by a hydraulic cylinder 30. Further, the connecting tool 6 which is connected to the tip of the tip arm 28 by a pin instead of a normal shovel is linked by a hydraulic cylinder 31 via links 32 and 33. It is designed to be raised.

In the figure, reference numeral 34 denotes a spring plunger for stabilizing the pressing of the main body frame 3 against the unevenness of the wall surface, which is disposed at an appropriate position on the pressing side.

When the concrete surface 1 is cut, the work arm 5 of the power shovel 4 is used to press the front surface of the main body frame 3 against the concrete surface 1.
Next, the roll cutter 8 is driven by the cutter drive motor 10, and the support shaft 22 is tilted in the direction shown by the arrow B in FIG. 2 by the unit tilt motor 20 of the advance / retreat mechanism 12, and the cutter unit 7 approaches the concrete surface 1. The roll cutter 8 is pushed in the direction to press the concrete surface 1 to start cutting the concrete surface 1.

However, when the roll cutter 8 is pressed against the concrete surface 1, a strong pressing force is not required, and a change in the cutting depth of the concrete surface 1 cut by the high speed rotation of the roll cutter 8 is followed. However, it is sufficient if the pressing force is sufficient to reliably suppress the reaction force.

Next, the toothed belt 1 is driven by the unit moving motor 17 of the slide mechanism 11 in this state.
6, the cutter unit 7 together with the reciprocating mechanism 12 is slid in the sliding direction indicated by an arrow A in FIG. 3 (a direction substantially perpendicular to the axis of the roll cutter 8 in a plane parallel to the front surface of the main body frame 3). The concrete surface 1 is reciprocated and cut by the roll cutter 8 to a predetermined cutting depth.

As described above, when the cutting operation on the concrete surface 1 at the predetermined pressing position is completed, the cutter unit 7 is retracted by the unit tilting motor 20 of the advance / retreat mechanism 12 in the direction away from the concrete surface 1 and the roll cutter 8 is rotated. The driving is stopped, and the pressing operation of the main body frame 3 is shifted to perform the same cutting operation as described above. Thereafter, each time the cutting operation at each pressing position is completed, the pressing operation of the main body frame 3 is shifted to perform the cutting operation. May be repeated to cut the entire area of the concrete surface 1.

At this time, since the cutter unit 7 is arranged to protrude from one side surface of the main body frame 3 and the roll cutter 8 is cantilevered at only the end on the main body frame 3 side so as to be rotatable. Two concrete surfaces 1
In the case of performing the cutting work of the corner formed by the above, it is possible to perform the cutting by bringing the end of the roll cutter 8 on the side opposite to the support side close to the valley line of the corner.

The portion that cannot be cut in the current posture because the body frame 3 itself is in the way is the turning mechanism 13.
The main frame 3 is turned with respect to the work arm 5 of the power shovel 4 by the frame turning motor 24, and the position of the cutter unit 7 may be changed to deal with it.

Therefore, according to the above embodiment, since the work for cutting the concrete surface 1 can be performed mechanically and efficiently without relying on the manual work of the worker, the burden on the worker can be greatly reduced. In addition, the construction period can be shortened and the construction cost can be reduced.

In particular, when the cutter unit 7 is
And the roll cutter 8 is cantilevered so that only the end on the side of the main body frame 3 can be rotated, so that the corner portion formed by the two concrete surfaces 1 can be cut. When performing, the roll cutter 8
Can be brought close to the end of the valley line at the corner, and the roll cutter 8 is moved along the valley line to perform cutting, whereby the corner can be cut well. it can.

The main body frame 3 is rotated by the turning mechanism 13.
Can be rotated with respect to the work arm 5 of the excavator 4 and the position of the cutter unit 7 can be changed arbitrarily. 1
And the corners in all directions can be satisfactorily cut.

Incidentally, the concrete cutting machine of the present invention is not limited to the above-described embodiment, and the concrete surface forms a ceiling, a floor and the like in addition to those forming the side walls of the concrete structure as shown in the figure. And that the slide mechanism, the reciprocating mechanism, and the turning mechanism are not limited to the illustrated structure, the heavy equipment is not limited to the power shovel, and various other changes may be made without departing from the gist of the present invention. Can of course be added.

[0033]

According to the concrete cutting machine of the present invention described above, the following various excellent effects can be obtained.

(I) Since the work for cutting the concrete surface can be performed mechanically and efficiently without relying on the manual work of the worker, the burden on the worker can be greatly reduced, and the construction period can be shortened. And construction costs can be reduced.

(II) Since the cutter unit is arranged to protrude from one side of the main body frame, and the roll cutter is rotatably supported at one end, it is possible to cut the corner formed by the two concrete surfaces. When performing, the end on the opposite side of the roll cutter on the opposite side can be brought close to the edge of the valley line at the corner, and the roll cutter is moved along the valley line and cut to cut the corner. Can be performed favorably.

(III) The body frame can be swiveled with respect to the work arm of the heavy equipment by the swivel mechanism, and the position of the cutter unit can be changed arbitrarily. The defect can be eliminated, and the entire area of the concrete surface and the corners in all directions can be cut well.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an embodiment of the present invention.

FIG. 2 is an enlarged view showing details of the concrete cutting machine of FIG. 1;

FIG. 3 is a view in the direction of arrows III-III in FIG. 2;

FIG. 4 is a view in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a view in the direction of arrows VV in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete surface 3 Main body frame 4 Power shovel (heavy machine) 5 Work arm 6 Connecting tool 7 Cutter unit 8 Roll cutter 11 Slide mechanism 12 Advance / retreat mechanism 13 Rotation mechanism

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinkichi Ooka 1-23 Yotsuya, Shinjuku-ku, Tokyo Toa Grout Industrial Co., Ltd. (72) Inventor Hisashi Kitajima 1-23 Yotsuya, Shinjuku-ku, Tokyo Toa Grout Industrial Co., Ltd. In company

Claims (1)

[Claims] 1. A concrete cutting machine in which a front surface of a main body frame is pressed against a concrete surface by a work arm of a heavy machine connected to a rear surface of the main body frame, and the concrete surface is cut by a cutter unit provided on the main body frame. Wherein the cutter unit includes a roll cutter that is cantilevered and rotatably supported with its axis oriented substantially perpendicular to one side surface of the main body frame, and is disposed so as to extend over one side surface of the main body frame. A slide mechanism for moving the cutter unit at a right angle to the axis of the roll cutter in a plane parallel to the front surface of the main body frame, an advancing / retracting mechanism for moving the cutter unit close to and away from the concrete surface, and work of the heavy equipment And a turning mechanism for turning the main body frame with respect to the arm. Cleat cutting machine.