JPH05321488A - Method and device for cutting along side wall - Google Patents

Abstract

PURPOSE:To correspond to the cutting in a narrow space by giving the tension to a cutting wire with a wire driving machine, which can move in parallel with the side wall of a concrete building to be cut, and cutting the side wall horizontally and vertically. CONSTITUTION:Pulley groups 4a, 4b consist of first pulleys 1a, 1b and second pulleys 2a, 2b, of which peripheral part contacts with the peripheral part of each first pulleys 1a, 1b vertically or at an angle of inclination against each first pulleys 1a, 1b, and third pulleys 3a, 3b, of which peripheral part contacts with the tangent passing the peripheral part of each second pulley 2a, 2b vertically or at an angle of inclination against each second pulleys 2a, 2b. Next, the tight side 14a of a cutting wire 14 is guided by the pulley group 4a, and the loose side 14b of the cutting wire 14 is guided by the pulley group 4b. When a wire driving machine 9 is moved along a rail 8 in parallel with the front surface of an object 6 to be cut and a driving pulley 12 is rotated, the cutting wire 14 is circulated for traveling under the required tension to cut the object 6 to be cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention uses a cutting wire to
When cutting reinforced concrete structures such as buildings, bridges and subway walls, and other objects to be cut, the side walls of the concrete structures can be moved horizontally while applying tension to the cutting wire by a wire drive machine that can move parallel to the side walls to be cut. And a method for cutting vertically and for arranging between the wire driving machine and the object to be cut so as to sequentially guide the tension side or the loose side of the cutting wire so as to be parallel to the side wall to be cut. The present invention relates to a cutting device along a side wall having a guide pulley for a cutting wire.

[0002]

2. Description of the Related Art A method for horizontally and vertically cutting a side wall while applying tension to a cutting wire by a wire driving machine that can move relative to a side wall of a concrete structure to be cut is disclosed in Japanese Utility Model Laid-Open No. 62-166007. The supporting frame, a pair of main pulleys supported by the supporting frame on the same plane at the required intervals, and parallel tangent lines that contact the outer peripheral portions of both main pulleys and pass between them. And a guide pulley base composed of a pair of guide pulleys supported in parallel to each other on the support frame so that their outer peripheral portions are in contact with each other, and a guide pulley base further provided with auxiliary pulleys arranged in parallel with each guide pulley. Is done using.

[0003]

SUMMARY OF THE INVENTION A conventional method and apparatus for horizontally and vertically cutting a side wall described above guides a tight side and a loose side of a cutting wire wound around an object to be cut to the front of the object to be cut. Therefore, when these guide pulley bases are used, the wire driving machine is usually arranged so as to face the object to be cut, and a large space for moving the wire driving machine to the front of the object to be cut is usually provided. Needed.

However, depending on the position of the object to be cut, a wide space cannot be provided in front of it, and it is sometimes necessary to move the wire driving machine laterally along the entire surface of the object to be cut. It is difficult for the conventional method and apparatus for horizontally and vertically cutting the side wall to sufficiently meet the above requirements.

It is an object of the present invention to provide a method of cutting side walls horizontally and vertically which allows a wire drive to move laterally along the entire surface of an object to be cut. Another object of the present invention is to provide a device for horizontally and vertically cutting a side wall, which enables a wire driving machine to move laterally along the entire surface of an object to be cut.

[0006]

In order to achieve the above object and solve the problems, the present invention applies a tension to a cutting wire by a wire driving machine that can move parallel to a side wall to be cut of a concrete structure. While configuring the method to cut the side wall horizontally and vertically, in order to carry out this method,
A first pulley and a second tangential line that passes through the outer periphery of the first pulley at an angle that is perpendicular or oblique to the first pulley and that contacts the outer periphery.
A pulley and a third pulley contacting the outer peripheral portion with a tangent line passing through the outer peripheral portion of the second pulley at an angle perpendicular or oblique to the second pulley, and the pulley group cuts the tight side or loose side of the cutting wire. The cutting device is configured along a side wall in which a pulley is arranged so as to sequentially guide the target side wall so that the object can travel parallel to the target side wall.

[0007]

According to the present invention, the wire driving machine is moved laterally along the entire surface of the side wall to be cut of the concrete structure, and the side wall is cut horizontally and vertically while applying tension to the cutting wire.

Further, in the cutting device according to the present invention, the tension side and the slack side of the cutting wire are made to travel via three planes by each pulley group consisting of the first pulley, the second pulley and the third pulley, In each third pulley, the cutting wire is laterally moved along the entire surface of the side wall of the concrete structure to be cut, and the sidewall is cut horizontally and vertically while applying tension to the cutting wire. The angle of the second pulley with respect to the first pulley and the angle of the third pulley with respect to the second pulley in each pulley group are appropriately selected according to the required moving direction of the wire driving machine with respect to the object to be cut, and the like.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2, and 3 are a front view, a plan view, and a side view, respectively, for explaining a horizontal cutting method according to an embodiment of the present invention.

In the guide pulley stand shown in FIG.
Pulley 1a, perpendicular to the first pulley 1a,
A tangent line m passing through a point P on the outer peripheral portion of the pulley 1a and a second pulley 2a contacting at a point Q on the outer peripheral portion, and a second pulley 2a
And a tangential line n passing through a point R 90 degrees apart from the point Q on the outer peripheral portion of the second pulley 2a and a third pulley 3a contacting at a point S on the outer peripheral portion in a substantially U-shaped arrangement. The group 4a is supported on one side of the support frame 5 and has the same relationship as the group of pulleys 1a.
b, the second pulley 2b and the third pulley 3b are arranged in a substantially Z-shaped arrangement, and the pulley group 4b is supported on the other side of the support frame 5. The first pulleys 1a and 1b are on the same plane, and the second pulleys The pulleys 2a and 2b are parallel to each other, and the third pulleys 3a and 3b
3b are arranged on the same plane or adjacent planes. Instead of using the guide pulley base in which the pair of pulley groups 4a and 4b are arranged adjacent to each other on the common support frame 5 as described above, the respective pulley groups 4a and 4b are arranged on the individual support frame 5. It is also possible to use the two guide pulley bases arranged side by side.

The support frame 5 is composed of both first pulleys 1.
a and 1b are fixed to the cutting object 6 by the anchors 7 in a state of being arranged on the horizontal plane along the planned cutting surface of the cutting object 6 and in parallel with the cutting object 6, and the rail 8 is the cutting object. A wire driving machine 9 is movably mounted on the rail 8 while being laid in parallel along the entire surface of 6. The wire drive machine 9 includes a carriage 11 having wheels 10 that engage with the rails 8, a drive pulley 12 that is mounted on the carriage 11 and drives the cutting wire 14, and a prime mover that individually drives the wheels 10 and the drive pulley 10. 13 and 13.

The cutting wire 14 is wound endlessly on the object 6 to be cut and the drive pulley 12 via the pulley groups 4a and 4b, and the tension side 14a of the cutting wire 14 is attached to the pulley group 4a arranged in a substantially U shape. , A pulley group 4 arranged in a substantially Z shape
b to guide the loose sides 14b of the cutting wires 14 respectively.

In the above construction, when the drive pulley 12 is rotated while moving the wire driving machine 9 along the rail 8 in parallel with the front surface of the object 6 to be cut, the cutting wire 14 circulates under a required tension. The object 6 to be cut can be horizontally cut.

The auxiliary pulleys 15a and 15b are connected to the second
As shown by the one-dot chain line in the figure, the cutting wire 14 provided on the outside of each of the first pulleys 1a and 1b on the same plane as the first pulley 1a and 1b and wound around the object 6 to be cut from the outside of each auxiliary pulley 15a and 15b When guided to the inside of the pulleys 1a and 1b, the cutting wire 14 travels as shown by the chain double-dashed line from the latter half to the final stage of cutting, and is maintained in a state where the running radius is large. In addition to preventing breakage due to bending, since the cutting wire 14 engages with the auxiliary pulleys 15a and 15b and stops at the same time as the completion of cutting, the cutting wire 14 is also prevented from being separated from the pulley groups 4a and 4b and jumping around.

On the other hand, FIG. 4 is a front view for explaining the vertical cutting method according to the embodiment of the present invention. The guide pulley base shown in FIG. 4 has the same structure as the guide pulley base shown in FIGS. However, the installation mode for the cutting target 6 is different. The support frame 5 includes two first pulleys 1a,
1b is on the vertical plane along the planned cutting plane of the cutting object 6,
Further, it is fixed to the cutting target 6 by the anchor 7 while being arranged in parallel with the cutting target 6.

A through hole 15 is provided at the lower end of the planned cutting of the object 6 to be cut.
After drilling, the cutting wire 14 is hung from the through hole 15 of the cutting object 6 to the upper end, and is further hung from each pulley group 4a, 4b to the wire driving machine 9, and the wire driving machine 9 is set on the rail 8. When the drive pulley 12 is rotated while being moved in parallel with the front surface of the cutting target object 6. The cutting wire 14 circulates under a required tension and can cut the object 6 to be cut in the vertical direction.

[0017]

As described above, according to the cutting method along the side wall of the present invention, a wide space cannot be provided in front of the object to be cut depending on the position of the object to be cut, and the wire driving machine is used to cut the object to be cut. It can accommodate a narrow space that needs to be moved laterally along the entire surface of the.

Further, according to the cutting device along the side wall of the present invention, the tension side and the slack side of the cutting wire can be made to travel via three planes, and the third pulleys can be moved in and out from the same direction. Therefore, by arranging each first pulley on the side of the object to be cut, by moving the cutting wire laterally along the entire surface of the object to be cut from each third pulley, the wire driving machine is moved to the front surface of the object to be cut. It can be moved laterally along, and the wire driver can be installed in a narrow space to cut along the side wall.

[Brief description of drawings]

FIG. 1 is a front view illustrating a horizontal cutting method and an apparatus therefor according to an embodiment of the present invention.

FIG. 2 is a front view illustrating a horizontal cutting method and an apparatus therefor according to an embodiment of the present invention.

FIG. 3 is a side view illustrating a horizontal cutting method and an apparatus therefor according to an embodiment of the present invention.

FIG. 4 is a front view illustrating a vertical cutting method and an apparatus therefor according to an embodiment of the present invention.

[Explanation of symbols]

 1a 1st pulley 1b 1st pulley 2a 2nd pulley 2b 2nd pulley 3a 3rd pulley 3b 3rd pulley 4a Pulley group 4b Pulley group 5 Support frame 6 Cutting target 9 Wire drive machine 14 Cutting wire 14a Cutting wire tension side 14b Cutting wire loose side

Claims (3)

[Claims] 1. A method of horizontally and vertically cutting a side wall while applying tension to a cutting wire by a wire driving machine that can move parallel to the side wall to be cut of a concrete structure. 2. A first pulley, a tangential line passing through the outer peripheral portion of the first pulley at a perpendicular or oblique angle to the first pulley, and a second pulley contacting the outer peripheral portion, and a vertical or oblique direction with respect to the second pulley. Of the tangent line passing through the outer peripheral portion of the second pulley and the third pulley contacting the outer peripheral portion, and the pulley group is sequentially guided so that the tension side or the loose side of the cutting wire can run parallel to the side wall to be cut. A cutting device along the side wall where the pulley is arranged so as to do. 3. A cutting device according to claim 2, wherein auxiliary pulleys are provided on both outer sides of the first pulley.