JP2020200590A - Cutting device and cutting method - Google Patents

Abstract

To provide a cutting device and a cutting method capable of performing cutting work in a lateral direction without performing installation replacement.SOLUTION: A cutting device is provided with: a cutting part for sliding a wire 2 stretched over a distal end pulley toward a wall balustrade concrete 60 while circularly running and cutting the wire 2 into the wall balustrade concrete 60 together with the distal end pulley (a right distal end pulley 14a, and a left distal end pulley 14b); a rack part for sliding the cutting part in a lateral direction while circularly running the wire 2 stretched over between the distal end pulley (the left distal end pulley 14b) penetrating through the wall balustrade concrete 60 and a lateral cutting pulley 50 arranged at this side of the wall balustrade concrete 60, and cutting the wall balustrade concrete 60 by the wire 2 stretched over between the distal end pulley (the right distal end pulley 14a) and the lateral cutting pulley 50.SELECTED DRAWING: Figure 11

Description

The present invention relates to a cutting device and a cutting method for cutting a concrete structure using a circulating wire (diamond wire or the like).

The applicant uses a wire saw device having a plurality of tip pulleys on the tip side and endless diamond wires can be hung on each tip pulley, and the diamond wire hung on each tip pulley is pressed against the concrete structure. A wire saw method has been proposed in which a diamond wire is circulated and driven to cut a concrete structure while feeding each tip pulley in the drilling direction (see, for example, Patent Document 1). According to this wire saw method, it is possible to cut a concrete structure without requiring a core hole for inserting a guide pulley.

Japanese Unexamined Patent Publication No. 2016-173025

However, in the prior art, when cutting a concrete structure that is long in the lateral direction such as a wall balustrade, it is necessary to lift the equipment and re-install it every time one cutting is completed. It was. As a result, the cycle of cutting work includes the work of replacing equipment, which causes a problem that efficient cutting work is difficult.

The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a cutting apparatus and a cutting method capable of performing cutting work in the lateral direction without performing installation replacement.

In order to achieve the above object, the cutting device of the present invention is a cutting device that cuts a concrete structure using a circulating wire, and the concrete structure is circulated while the wire spanning the tip pulley is circulated. A cutting portion that slides toward the concrete structure and cuts the wire together with the tip pulley into the concrete structure, and the tip pulley that penetrates the concrete structure and a lateral surface that is arranged on the front side of the concrete structure. The cutting portion is slid laterally while the wire spanned between the cutting pulley and the cutting pulley is circulated, and the concrete structure is formed by the wire bridged between the tip pulley and the lateral cutting pulley. It is characterized by having a pedestal portion for cutting an object.
Further, in the cutting device of the present invention, the support mechanism for supporting the transverse cutting pulley is attached to the gantry portion, and the retracting state in which the transverse cutting pulley is retracted from the traveling path of the wire and the wire It is characterized in that it can be switched between an operating state in which the lateral cutting pulley is arranged at a position for guiding the traveling of the vehicle.
Further, in the cutting apparatus of the present invention, the cutting portion includes a turning pulley that turns the traveling direction of the wire from the traveling surface of the tip pulley, and the traveling surface of the wire that is converted by the turning pulley. It is characterized by including a drive pulley for driving the above.
Further, in the cutting apparatus of the present invention, the cutting portion includes a slide carriage that supports the tip pulley and slides toward the concrete structure, and the mount portion is a mount that slidably supports the slide carriage. And an extension pedestal connected to the rear side of the gantry, and the extension pedestal is removable from the gantry in a state where the slide carriage is located on the gantry.
Further, in the present invention, the left and right slide rollers rotatably engaged with the left and right slide rails attached to the concrete structure and the pinion that meshes with the left and right slide racks attached to the concrete structure are rotating shafts. The left and right slide motors provided in the above are provided.
Further, in the cutting device of the present invention, the gantry portion is provided with a derailment prevention roller that engages with the left and right slide rails so as to be rollable from a direction different from that of the left and right slide rollers.
Further, the cutting method of the present invention is a cutting method for cutting a concrete structure using a circulating wire, and the cutting portion provided with a tip pulley over which the wire is laid is driven while the wire is running. After sliding toward the concrete structure and cutting the wire together with the tip pulley into the concrete structure to cut the concrete structure, the pedestal portion supporting the slide of the cutting portion penetrates the concrete structure. The wire spanned between the tip pulley and the transverse cutting pulley arranged on the front side of the concrete structure is slid laterally while running, and between the tip pulley and the transverse cutting pulley. It is characterized in that the concrete structure is cut by the wire that is bridged over.

According to the present invention, when cutting a concrete structure long in the lateral direction, it is possible to perform the cutting in the lateral direction without changing the installation.

It is a perspective view which shows the structure of the embodiment of the cutting apparatus which concerns on this invention. It is a side view which shows the structure of the embodiment of the cutting apparatus which concerns on this invention. It is a perspective view which shows the structure of the cutting part shown in FIG. It is a perspective view which shows the state which the cutting part shown in FIG. 1 is slid forward. It is a figure which shows the operating state of the transverse cutting pulley shown in FIG. It is a perspective view which shows the structure of the cutting apparatus which removed the control box. It is a perspective view which shows the installation state of the bracket on the wall balustrade concrete. It is a perspective view which shows the state which the rail for left and right slide and the rack for left and right slide are installed on the wall balustrade concrete. It is a perspective view which shows the state which the embodiment of the cutting apparatus which concerns on this invention is installed in the wall balustrade concrete. It is a side view which shows the state which the embodiment of the cutting apparatus which concerns on this invention is installed in the wall balustrade concrete. It is explanatory drawing explaining the cutting process. It is a side view which shows the state which the wall balustrade concrete was cut in the X-axis direction by the embodiment of the cutting apparatus which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, the same reference numerals are given to the configurations showing the same functions, and the description thereof will be omitted as appropriate.

With reference to FIGS. 1 and 2, the cutting device 1 of the present embodiment includes a cutting portion 10 in which a wire 2 such as a diamond wire for cutting a concrete structure as a cutting object by frictional cutting is laid in an endless manner. It includes a gantry portion 30 that supports the cutting portion 10. FIG. 1 is a perspective view of the cutting device 1 viewed from the diagonally right rear side, and FIG. 2 is a side view of the cutting device 1 viewed from the right side. The cutting device 1 of the present embodiment can be applied to both a wet method of cutting while supplying a large amount of water and a dry method of cutting with only a small amount of water supplied. Therefore, in the following description, the water supply mechanism, the dust collection mechanism, and the like are omitted.

The gantry portion 30 includes a front-rear slide rail 31 extending in the front-rear direction, and the cutting portion 10 slides in the front-rear direction along the front-rear slide rail 31. Then, the cutting portion 10 self-propells from the rear side to the front side, presses the wire 2 against the concrete structure arranged on the front side, and pushes the wire 2 off.

With reference to FIGS. 1 and 3, the cutting portion 10 has a drive pulley 11, a right guide pulley 12a, a left guide pulley 12b, a right turning pulley 13a, and a left side as traveling guides for guiding the traveling of the wire 2. It includes a turning pulley 13b, a right end pulley 14a, and a left end pulley 14b. FIG. 3 is a perspective view of the cutting portion 10 viewed from the diagonally left front side.

The drive pulley 11, the right side guide pulley 12a, and the left side guide pulley 12b have rotation axes in the front-rear direction (X-axis direction) and are arranged on the same YY plane. The right-hand turning pulley 13a and the left-hand turning pulley 13b have rotation axes in the left-right direction (Y-axis direction) orthogonal to the front-rear direction, and their rotation axes are arranged coaxially with each other. The right end pulley 14a and the left end pulley 14b have rotation axes in the vertical direction (Z-axis direction) orthogonal to the front-rear direction and the left-right direction, and are arranged on the same XY plane.

The drive motor 15 that rotationally drives the drive pulley 11 is provided on the slide carriage 16 that moves in the front-rear direction with respect to the gantry portion 30. The slide carriage 16 is provided with a right column 16a that rotatably supports the right guide pulley 12a and a left column 16b that rotatably supports the left guide pulley 12b, and is located between the right column 16a and the left column 16b. The drive motor 15 is supported. Further, a right arm 16c projecting toward the right side and a left arm 16d projecting toward the left side are attached to the slide carriage 16, and a right turning pulley 13a is attached to the tip of the right arm 16c and the tip of the left arm 16d. The left side turning pulley 13b is rotatably supported on the portion.

The wire 2 travels on a path on the YY plane from the drive pulley 11 to the right turning pulley 13a via the right guide pulley 12a (hereinafter, traveling path A). Then, the wire 2 whose traveling direction is changed by the right turning pulley 13a travels on the path on the XY plane to reach the left turning pulley 13b via the right tip pulley 14a and the left tip pulley 14b (hereinafter,). , Travel path B). Then, the wire 2 whose traveling direction is turned again by the left turning pulley 13b travels on a path on the YY plane returning to the drive pulley 11 via the left guide pulley 12b (hereinafter, traveling path C). The wire 2 can also be traveled in the opposite direction of the travel path CBA.

The support portion 17 extends forward from the slide carriage 16, the right end pulley 14a is obliquely to the right front from the tip side of the support portion 17, and the left tip pulley 14b is oblique to the tip side of the support portion 17. It is attached so that the peripheral surface protrudes to the left front. As a result, in the traveling path B, the wire 2 travels so as to surround the outer circumference of the support portion 17. In the present embodiment, the support portion 17 is composed of one plate, but the shape of the support portion 17 is not limited. For example, the right tip pulley 14a and the left tip pulley 14b are supported by individual arms. You may do so.

Further, the vertical thickness of the support portion 17 and the support mechanism of the right tip pulley 14a and the left tip pulley 14b is set to be equal to or less than the diameter of the wire 2, and protrudes vertically from the wire 2 in a side view. Arranged so that there is no. As a result, by sliding the slide carriage 16 forward and pressing the wire 2 of the traveling path B against the concrete structure, the wire 2 of the traveling path B is cut into the concrete structure and can be pushed off.

The gantry portion 30 includes a gantry 32 having front and rear slide rails 31 attached to the upper surface thereof, and a control box 33 in which a control unit and the like for controlling the operation of the cutting device 1 are housed. A right front support column 32a, a left front side column 32b, a right rear side column 32c, and a left rear side column 32d are erected on the gantry 32, and the control box 33 is spaced on the gantry 32 by the plurality of columns. It is supported.

As shown in FIG. 2, by fastening the flange portion 35 provided at the rear end of the gantry 32 and the flange portion 35x provided at the front end of the extension gantry 32x, a front / rear slide rail is provided on the rear side of the gantry 32. An extension pedestal 32x with an extension rail 31x for front and rear slides connected to 31 attached to the upper surface is connected. The slide carriage 16 includes a front-rear slide roller 20 that rotatably engages with the front-rear slide rail 31 and the front-rear slide extension rail 31x.

With reference to FIGS. 2 and 3, the gantry 32 has a front-rear slide rack 36 extended in the front-rear direction, and the extension gantry 32x has a front-rear slide extension rack 36a connected to the front-rear slide rack 36 on the upper surface. Each is attached. The slide carriage 16 is provided with a front-rear slide motor 18 which is a drive source for moving in the front-rear direction with respect to the gantry portion 30, and a pinion 21 rotationally driven by the front-rear slide motor 18 via a gearbox 19 is front-rear. It meshes with the slide rack 36 and the front / rear slide extension rack 36a. As a result, the slide carriage 16 can self-propell in the front-rear direction by the rotational drive of the front-rear slide motor 18.

The gantry 32 is provided with a right side guide portion 34a and a left side guide portion 34b for guiding the slide of the support portion 17 in the front-rear direction inside the traveling path B.

The gantry 32 and the control box 33 are arranged at a sufficient interval equal to or higher than the vehicle height of the slide trolley 16, and as shown in FIG. 4, the entire slide trolley 16 is configured to be slidable on the gantry 32. The right side guide portion 34a and the left side guide portion 34b are provided at positions where the slide carriage 16 does not come into contact with the slide carriage 16 even if the slide carriage 16 slides on the mount 32.

Further, referring to FIGS. 3 to 5, a transverse cutting pulley 50 is attached to the upper surface of the gantry 32 via a support mechanism 51. The support mechanism 51 rotatably supports the transverse cutting pulley 50. As shown in FIGS. 3 to 4, the support mechanism 51 is in a retracted state in which the transverse cutting pulley 50 is retracted downward from the traveling path B of the wire 2, and as shown in FIG. 5, the transverse cutting pulley 50 is retracted. The peripheral surface of the wire 2 is brought into contact with the traveling path B of the wire 2 from the left tip pulley 14b to the left turning pulley 13b from the inside (right side), and can be switched between operating states where the wire 2 is arranged at a position to guide the traveling. Has been done.

FIG. 6 is a perspective view of the cutting device 1 from which the control box 33 has been removed. Referring to FIGS. 2 and 6, a plurality of left and right slide rollers 37 and derailment prevention rollers 38 whose rotation axes are in the front-rear direction (X-axis direction) are attached to the gantry portion 30 so as to project from the front surface. .. The left and right slide rollers 37 rotatably engage with the left and right slide rails 91 extending in the left-right direction from above, so that the gantry portion 30 can move along the left and right slide rails 91. The method of attaching the left and right slide rails 91 will be described later. The derailment prevention roller 38 is attached so as to be movable in the vertical direction, and is rotatably engaged with the left / right slide rail 91 from a direction different from that of the left / right slide roller 37 (from the lower side). Prevents the left and right slide rollers 37 from coming off from the left and right slide rails 91. In the present embodiment, two sets of the left and right slide rollers 37 and the derailment prevention roller 38 are attached to the right front side support column 32a and the left front side support column 32b, respectively.

Further, the gantry portion 30 is provided with a left-right slide motor 39 whose rotation axis is in the front-rear direction (X-axis direction). The left-right slide motor 39 is a drive source that moves the gantry portion 30 in the left-right direction with respect to the object to be cut. A pinion 40 is attached to the rotating shaft of the left and right slide motor 39 protruding from the front surface of the gantry portion 30. As a result, by engaging the pinion 40 with the left and right slide rack 92 extending in the left and right direction, the gantry portion 30 can self-propell in the left and right direction by the rotational drive of the front, rear, left and right slide motors 39. The method of attaching the left and right slide rack 92 will be described later. In the present embodiment, the left and right slide motors 39 are attached by auxiliary columns 32f and 32g erected on a beam 32e bridged between the right front column 32a and the left front column 32b.

Next, a cutting method for cutting the wall balustrade concrete 60 of the viaduct into a concrete structure using the cutting device 1 will be described in detail with reference to FIGS. 7 to 11.

First, as shown in FIG. 7, the pavement portion 61 is removed to expose the connection portion between the floor slab 62 and the ground covering portion 63 of the wall balustrade concrete 60, and a plurality of brackets 70 are hooked on the wall balustrade concrete 60. Then, the bracket 70 is temporarily fixed to the wall balustrade 60 in a state where the temporary fixing pipe 80 is laid over the upper surfaces of the plurality of brackets 70 (in the lateral direction of the wall balustrade concrete 60). The bracket 70 is provided with an adjusting mechanism 71 composed of bolts and nuts for adjusting the distance and inclination of the wall balustrade concrete 60 from the outer wall, the upper surface and the inner wall, respectively.

Next, the temporary fixing pipe 80 is removed, and the frame body 90 provided with the left and right slide rails 91 and the left and right slide racks 92 is placed on the upper surfaces of the plurality of brackets 70, and the left and right slide rails 91 and the left and right slides extend laterally. The rack 92 is attached so as to be arranged on the outer wall of the wall rail concrete 60. FIG. 8 shows a state in which two frame bodies 90 are attached to the wall balustrade concrete 60 by a plurality of brackets 70, and the left and right slide rails 91 and the left and right slide racks 92 are connected. The frame body 90 is provided with an adjusting mechanism 93 composed of bolts and nuts for adjusting the inclination of the wall balustrade concrete 60 with respect to the outer wall, respectively.

Next, the cutting device 1 determines the notch position by adjusting the vertical position and inclination of the left and right slide rail 91 and the left and right slide rack 92 by the adjustment mechanism 71 of the bracket 70 and the adjustment mechanism 93 of the frame body 90. .. The mounting positions of the left and right slide rails 91 and the left and right slide racks 92 in the frame body 90 correspond to the mounting positions of the left and right slide rollers 37 in the gantry portion 30 and the pinion 40 of the left and right slide motors 39.

Next, as shown in FIGS. 9 and 10, the left and right slide rollers 37 are placed on the left and right slide rails 91, and the derailment prevention rollers 38 are fixed in a state of being pressed against the left and right slide rails 91 from below. , The cutting device 1 is set on the outer wall of the wall rail concrete 60. The teeth of the left and right slide rack 92 are formed on the upper surface, and the pinion 40 of the left and right slide motor 39 meshes with the left and right slide rack 92 by the set of the cutting device 1.

Next, the drive pulley 11 is rotated by the drive motor 15, the pinion 21 is rotated by the front-rear slide motor 18 while the wire 2 is circulated, and the slide carriage 16 (cut portion 10) is placed on the outer wall of the wall balustrade concrete 60. Slide forward (arrow X shown in FIG. 11A) toward.

As a result, the wire 2 of the traveling path B is pressed against the wall balustrade concrete 60, and as shown in FIG. 11B, the wire 2 is cut into the wall balustrade concrete 60 together with the right tip pulley 14a and the left tip pulley 14b. , The wall balustrade concrete 60 is cut in the X-axis direction.

In cutting in the X-axis direction, the rotation speed of the drive motor 15 (running speed of the wire 2) is controlled to be constant. A torque detection unit that detects the load torque of the drive motor 15 is provided, and the rotation speed of the front-rear slide motor 18 (slide speed of the cutting unit 10) depends on the load torque of the drive motor 15. When the load torque of the front / rear slide motor 18 becomes large, the rotation speed of the front / rear slide motor 18 is controlled to decrease. The rotation speed of the front-rear slide motor 18 may be controlled linearly or stepwise according to the load torque of the drive motor 15.

In FIGS. 11C and 12, the wall balustrade concrete 60 (ground covering portion 63) is completely cut in the X-axis direction, and the right tip pulley 14a and the left tip pulley 14b penetrate the wall balustrade concrete 60 and are located on the inner wall. The state to do is shown. In this way, since cutting can be performed in the X-axis direction without the need for a core hole for inserting the guide pulley, the wall balustrade concrete 60 can be accurately cut according to the floor slab 62, and the cut surface can be cut. Post-work such as scraping work can be reduced.

Note that FIG. 12 shows a state in which the extension pedestal 32x is removed from the gantry 32. As described above, the slide carriage 16 is configured so that the entire slide carriage 16 can be located on the mount 32, and the extension mount 32x can be removed from the mount 32 while the slide carriage 16 is located on the mount 32.

Next, the rotation of the drive motor 15 and the front-rear slide motor 18 is stopped, and the operation state is switched to the operating state shown in FIG. 5 in which the transverse cutting pulley 50 is arranged at a position for guiding the traveling of the wire 2. As shown in FIG. 11D, the left tip pulley 14b may also be replaced with a left tip pulley 14b'thicker than the diameter of the wire 2 so that the traveling of the wire 2 can be guided more reliably.

Next, the drive pulley 11 is rotated by the drive motor 15, the pinion 40 is rotated by the left and right slide motors 39 while the wire 2 is circulated, and the gantry portion 30 is moved laterally along the outer wall of the wall balustrade concrete 60. (Slide to arrow Y shown in FIG. 11 (d)).

As a result, the wall balustrade concrete 60 is cut in the lateral direction by the wire 2 bridged between the right end pulley 14a and the transverse cutting pulley 50.

In cutting in the Y-axis direction, the rotation speed of the drive motor 15 (running speed of the wire 2) is controlled to be constant. The rotation speed of the left and right slide motors 39 (slide speed of the gantry portion 30) is such that the rotation speed of the left and right slide motors 39 decreases as the load torque of the drive motor 15 increases according to the load torque of the drive motor 15. Is controlled by. The rotation speed of the left and right slide motors 39 may be controlled linearly or stepwise according to the load torque of the drive motor 15.

As described above, the present embodiment is a cutting device 1 for cutting the wall balustrade concrete 60 using the circulating wire 2, and is bridged over the tip pulleys (right tip pulley 14a, left tip pulley 14b). A cutting portion 10 and a wall, in which the wire 2 is slid toward the wall balustrade concrete 60 while circulating, and the wire 2 is cut into the wall balustrade concrete 60 together with the tip pulley (right end pulley 14a, left tip pulley 14b) and cut. The cutting portion 10 is laterally circulated while the wire 2 bridged between the tip pulley (left tip pulley 14b) penetrating the balustrade concrete 60 and the transverse cutting pulley 50 arranged on the front side of the wall balustrade concrete 60 is circulated. It is provided with a gantry portion 30 that slides in a direction and cuts the wall balustrade concrete 60 by a wire 2 bridged between the tip pulley (right tip pulley 14a) and the transverse cutting pulley 50.
With this configuration, when cutting work is performed on the wall balustrade concrete 60, it is possible to perform cutting work in the lateral direction without performing installation replacement, and it is possible to greatly increase the volume of cutting work. Further, since the cutting device 1 can be cut in the lateral direction while being installed on the wall balustrade concrete 60, a work scaffold is installed on the wall balustrade concrete 60 on the outer wall side to secure a space for installing the cutting device 1. It is not necessary to do this, and the preparation for construction in advance can be simplified.

Further, in the present embodiment, the support mechanism 51 for supporting the lateral cutting pulley 50 is attached to the gantry portion 30, and is in a retracted state in which the lateral cutting pulley 50 is retracted from the traveling path B of the wire 2 and the wire 2 It is configured to be switchable between an operating state in which the transverse cutting pulley 50 is arranged at a position for guiding the traveling of the vehicle.
With this configuration, the lateral cutting pulley 50 can be attached to the gantry portion 30 that slides in the lateral direction, so that the strength can be ensured when cutting in the lateral direction. If the strength can be ensured, the lateral cutting pulley 50 may be attached to the support portion 17 to always guide the running of the wire 2.

Further, in the present embodiment, the cutting portion 10 turns the traveling direction of the wire 2 from the traveling surface by the tip pulley (right tip pulley 14a, left tip pulley 14b) (right turning pulley 13a, left turning pulley 13b). And a drive pulley 11 that drives the running of the wire 2 on the running surface of the wire 2 turned by the turning pulley (right turning pulley 13a, left turning pulley 13b).
With this configuration, the total length of the cutting portion 10 in the front-rear direction (X-axis direction) can be made compact, the required work scaffolding space can be reduced, and the labor required for construction preparation can be reduced.

Further, in the present embodiment, the cutting portion 10 includes a slide carriage 16 that supports the tip pulley (right tip pulley 14a, left tip pulley 14b) and slides toward the wall balustrade concrete 60, and the gantry portion 30 slides. A pedestal 32 that slidably supports the trolley 16 and an extension pedestal 32x connected to the rear side of the gantry 30 are provided. It is removable.
With this configuration, it is possible to shorten the overhang length from the wall balustrade concrete 60 when cutting in the lateral direction, and the lateral cutting work is performed without requiring a large space on the outer wall side of the wall balustrade concrete 60. be able to.

Further, in the present embodiment, the left and right slide rollers 37 rotatably engaged with the left and right slide rails 91 attached to the wall balustrade concrete 60 and the left and right slide racks 92 attached to the wall balustrade concrete 60 mesh with each other. A pinion 40 includes a left and right slide motor 39 provided on a rotating shaft.
With this configuration, the cutting device 1 can be smoothly slid along the left and right slide rails 91.

Further, in the present embodiment, the gantry portion 30 includes a derailment prevention roller 38 that rotatably engages with the left and right slide rails 91 from a direction different from that of the left and right slide rollers 37.
With this configuration, it is possible to prevent the left and right slide rails 91 from falling off with a simple configuration.

The present invention has been described above based on the embodiments. This embodiment is an example, and it is understood by those skilled in the art that various modifications are possible in the combination of each of these components, and that such modifications are also within the scope of the present invention.

1 Cutting device 2 Wire 10 Cutting part 11 Drive pulley 12a Right guide pulley 12b Left guide pulley 13a Right turning pulley 13b Left turning pulley 14a Right tip pulley 14b Left tip pulley 15 Drive motor 16 Slide carriage 16a Right pillar 16b Left pillar 16c Right arm 16d Left arm 17 Support 18 Front / rear slide motor 19 Gearbox 20 Front / rear slide roller 21 Pinion 30 Stand 31 Front / rear slide rail 31x Front / rear slide extension rail 32 Stand 32x Extension stand 32a Right front support 32b Left front support 32c Right rear side Strut 32d Left rear strut 32e Beam 32f, 32g Auxiliary strut 33 Control box 34a Right guide part 34b Left guide part 35 Flange part 35 x Flange part 36 Front and rear slide rack 36a Front and rear slide extension rack 37 Left and right slide roller 38 Derailment prevention roller 39 Left and right slide motor 40 Pinion 50 Horizontal cutting pulley 51 Support mechanism 60 Wall balustrade concrete 61 Pavement part 62 Floor slab 63 Ground covering part 70 Bracket 80 Temporary fixing pipe 71 Adjustment mechanism 90 Frame body 91 Left and right slide rail 92 Left and right slide Rack 93 adjustment mechanism

Claims (7)

A cutting device that cuts concrete structures using circulating wires.
A cutting portion in which the wire spanning the tip pulley is circulated and slid toward the concrete structure, and the wire is cut into the concrete structure together with the tip pulley for cutting.
The cutting portion is slid laterally while circulating the wire spanning between the tip pulley penetrating the concrete structure and the transverse cutting pulley arranged on the front side of the concrete structure. A cutting apparatus comprising: a pedestal portion for cutting a concrete structure by the wire bridged between the tip pulley and the transverse cutting pulley. The support mechanism for supporting the lateral cutting pulley is attached to the gantry portion, and is in a retracted state in which the lateral cutting pulley is retracted from the traveling path of the wire and at a position for guiding the traveling of the wire. The cutting apparatus according to claim 1, wherein the cutting apparatus is configured to be switchable depending on an operating state in which a cutting pulley is arranged. The cutting part is
A turning pulley that turns the running direction of the wire from the running surface of the tip pulley,
The cutting device according to claim 1 or 2, further comprising a drive pulley that drives the running of the wire on the running surface of the wire that has been turned by the turning pulley. The cutting part is
A slide carriage that supports the tip pulley and slides toward the concrete structure is provided.
The gantry portion
A mount that slidably supports the slide carriage and
An extension pedestal connected to the rear side of the gantry is provided.
The cutting device according to any one of claims 1 to 3, wherein the extension gantry is removable from the gantry while the slide trolley is located on the gantry. Left and right slide rollers that rotatably engage with the left and right slide rails attached to the concrete structure,
The cutting apparatus according to any one of claims 1 to 4, further comprising a left and right slide motor provided with a pinion on a rotating shaft that meshes with a left and right slide rack attached to the concrete structure. The gantry portion
The cutting apparatus according to claim 5, further comprising a derailment prevention roller that rotatably engages the left and right slide rails from a direction different from that of the left and right slide rollers. It is a cutting method that cuts a concrete structure using a circulating wire.
A cutting portion having a tip pulley over which the wire was laid was slid toward the concrete structure while the wire was running, and the wire was cut into the concrete structure together with the tip pulley for cutting. rear,
A pedestal portion that supports the slide of the cutting portion is driven by the wire that is bridged between the tip pulley that penetrates the concrete structure and the transverse cutting pulley that is arranged on the front side of the concrete structure. A cutting method characterized in that the concrete structure is cut by the wire bridged between the tip pulley and the transverse cutting pulley while sliding in the lateral direction.

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