KR101508205B1 - Jig Apparatus for Tunnel Excavation using Wire-Saw - Google Patents

Jig Apparatus for Tunnel Excavation using Wire-Saw Download PDF

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Publication number
KR101508205B1
KR101508205B1 KR20140054328A KR20140054328A KR101508205B1 KR 101508205 B1 KR101508205 B1 KR 101508205B1 KR 20140054328 A KR20140054328 A KR 20140054328A KR 20140054328 A KR20140054328 A KR 20140054328A KR 101508205 B1 KR101508205 B1 KR 101508205B1
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KR
South Korea
Prior art keywords
main body
wire saw
jig device
entrance hole
jig
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Application number
KR20140054328A
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Korean (ko)
Inventor
이진호
사공명
이경찬
안성권
Original Assignee
한국철도기술연구원
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Application filed by 한국철도기술연구원 filed Critical 한국철도기술연구원
Priority to KR20140054328A priority Critical patent/KR101508205B1/en
Application granted granted Critical
Publication of KR101508205B1 publication Critical patent/KR101508205B1/en
Priority to PCT/KR2015/004502 priority patent/WO2015170868A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines

Abstract

The present invention relates to a jig device in a wire saw which prevents a problem of the wire saw not working properly due to a pulley in the wire saw hitting an inner wall of the of the tunnel′s borehole; especially when the jig with pulleys on both sides of it is inserted into the borehole and starts to cut it through the hole. This problem occurs when the jig is bent in the borehole or is distorted due to vibration. The present invention comprises: a main body (10); a forward pulley (11); a rear pulley (12); a support material (2) attached to the main body (10) which includes a plurality of numbers of the new support parts (21) available for new buildings as they are extended outward from the main body (10); and the jig for the wire saw with features like the main body (10) and the forward pulley (11) arranged in regular intervals between the inner walls of the borehole (210) by extending the new support parts (21) closely attached on the inner walls of the borehole (210).

Description

TECHNICAL FIELD [0001] The present invention relates to a tunnel jig for tunnel excavation using a wire saw,

The present invention relates to a jig device inserted into an entry hole drilled in a workpiece for cutting a work such as a ground or rock into a wire saw for the construction of a tunnel or the like, There is provided a method of cutting a workpiece by moving a wire saw after inserting an entry hole into a workpiece, inserting a rod-shaped jig device having both ends of a pulley wound around the wire saw into the entry hole, In order to prevent the operation of the wire saw from being performed smoothly due to collision of the jig device and the pulley provided therein due to the bending deformation or vibration of the main body of the rod-shaped jig device inserted into the entrance hole, And a supporting member having an insertion guide and a gap maintaining function, and is capable of cooling the frictional heat generated when the wire saw is operated It relates to that further comprising a supplier configured gaksu "stationary jig apparatus for tunnel excavation by the wire saws".

BACKGROUND OF THE INVENTION Wire saws are used for cutting hard materials such as rocks and concrete. Korean Patent Laid-Open No. 10-2005-0032942 discloses an example of a technique of cutting a concrete by attaching a wire saw apparatus to a mini excavator. Such a wire saw can be utilized in a wide variety of applications. The inventor of the present application newly derived a method of utilizing the cutting function of the wire saw for the construction of a tunnel and named it as "tunnel construction method using wire saw" Korean Patent Application No. 10-2013-0105298 (filed on Mar. 03, 2013).

1 shows a jig device 1 in an entrance hole 210 formed in a work 200 according to a tunnel construction method using a wire saw newly proposed by the present inventor through Korean Patent Application No. 10-2013-0105298. And FIG. 3 is a schematic cross-sectional view taken along the line AA of FIG. 1, which shows the cutting process sequentially in FIGS. 2 and 3, respectively. have.

As shown in the drawing, in the tunnel construction method proposed by the present inventors, first, an entrance hole 210 is drilled in the ground, and then a pair of jig devices 1 having a rod shape provided with pulleys at both ends thereof, And is inserted into the entry hole 210. In this state, the wire saw 100, which is wound around the front pulley 11 provided at the front end of each jig device 1 and continuously laid between the pair of jig devices 1, The ground between the two entrance holes 210 into which the jig device 1 is inserted is covered. The wire saw 100 wound on the rotating wheel 310 is moved so that the ground between the two penetration holes 210 is moved The portion of the wire saw 100 that is wrapped around is being linearly moved and cuts the ground as shown in FIG.

In order to insert the jig device 1 into the perforated entrance hole 210 for cutting the workpiece with the wire saw 100, a fixed anchor device is coupled to the rear of the jig device 1, A configuration in which the device is fixed to the surface of the workpiece can be used. In this case, in order to fix the fixed anchor device on the surface of the workpiece, it is necessary to take an inconvenient and time-consuming work such as installing anchor bolts or the like in the ground.

Particularly, when the fixed anchor device fixed to the surface of the workpiece is fastened to the rear of the rod-shaped jig device 1 and the jig device 1 is supported only by the fixed anchor device, the jig device 1 is eventually transferred to the cantilever- When the entrance hole 210 is formed in the horizontal direction, the front end portion of the jig device 1 inserted into the entrance hole 210 acts on the self weight of the jig device 1 or on the wire saw A phenomenon occurs in which the sag is sagged downward due to the tensile force. Particularly, in the process of cutting the workpiece by the linear movement of the wire saw 100, severe vibration is generated in the jig device 1. In the fixing mode of the jig device 1 on the ground surface as described above, The front end of the jig device 1 is strongly moved by the vibration and the front pulley provided at the front end of the jig device 1 frequently collides with the inner wall of the entrance hole 210. [ The collision phenomenon of the front pulley 11 due to the generation of the vibration occurs in the case where the entrance hole 210 is perforated in the vertical direction or perforated in the other direction in addition to the case where the entrance hole 210 is perforated in the horizontal direction.

In order to smoothly cut the workpiece by the wire saw 100, there is no element that hinders smooth movement of the wire saw 100, and a wire saw is wound around the front end of the jig device 1 So that the free rotation of the front pulley 11 is surely ensured. However, when the front pulley 11 of the jig device 1 collides with or comes into close contact with the inner wall of the entrance hole 210 due to vibration at the time of work and deflection of the front end due to the self weight of the jig device 1, Damage to the pulley 11 may occur and the wire saw 100 may be caught between the jig device 1 and the inner surface of the entrance hole 210 and a great obstacle may be caused in rotation of the front pulley 11 And the smooth movement of the wire saw 100 is not performed, thereby causing a problem that the cutting efficiency of the workpiece is significantly lowered.

On the other hand, when the wire saw 100 is moved to cut a workpiece, a large frictional heat is generated. Therefore, it is necessary to supply cooling water that can cool the wire saw 100. The cooling water can be supplied from the inlet of the entrance hole 210, that is, the surface of the workpiece, to the entrance hole 210 by using a hose or the like. When the entrance hole 210 is deep, And the cooling water may not be injected into the entrance hole 210 due to the air inside the entrance hole 210.

Korean Patent Publication No. 10-2005-0032942 (published on Apr. 08, 2005)

The present invention relates to a jig device which is inserted into an entrance hole of a jig device when the work is performed by inserting a jig device into an entrance hole penetrated by a workpiece to construct a tunnel or the like and moving the wire saw, And it is an object of the present invention to provide a technique capable of preventing a jig device and a front pulley provided thereon from colliding with an ingress hole inner wall, thereby preventing a linear movement of the wire saw from occurring in advance.

It is another object of the present invention to provide a technique for smoothly supplying cooling water for cooling the frictional heat to the entrance hole.

It is another object of the present invention to provide a technique capable of preventing or minimizing damage of a front pulley colliding with an inner wall of an entrance hole during a process of inserting the jig into the entrance hole.

In order to accomplish the above object, according to the present invention, there is provided a jig device inserted into an entry hole drilled in a ground for cutting a workpiece using a wire saw, the jig device comprising: And a front pulley and a rear pulley, which are respectively provided at both ends of the main body and in which the wire saw is wound and deflected; The main body is provided with a support member including a plurality of stretchable and retractable support pieces extending in the lateral outward direction of the main body so that the stretchable support pieces of the support member are stretched in the state that the main body is inserted into the entry hole, So that the main body and the front pulley are positioned and fixed with an interval from the inner wall of the entrance hole.

In the wire saw jig device according to the present invention, among the plurality of the expansion and contraction support pieces, the jig device is in contact with the inner wall of the entrance hole when the jig device is inserted into the entrance hole or drawn out from the entrance hole, And the elastic supporting piece is provided at the outer end.

Further, in the wire saw jig device according to the present invention, a spray nozzle may be provided on the side surface of the main body in the direction toward the cutting position, in which the wire saw closely contacts the workpiece, A plurality of spaced-apart portions may be provided in the longitudinal direction.

When the jig device according to the present invention is used, a plurality of stretching and holding pieces provided on the support member are extended and pressed against the inner surface of the entrance hole with the jig device inserted in the entry hole, Is fixedly disposed in the entrance hole while keeping the space between the body and the inner surface of the entrance hole. Therefore, it is possible to prevent the problem that the front pulley contacts with the inner surface of the entrance ball due to the bending of the body of the jig device due to the own weight of the jig device or the vibration of the cutting process, thereby obstructing the movement of the wire saw. And an effective cutting operation can be ensured by the motion.

Particularly, when the jig device is inserted into the entry hole and then only the extensible support part is extended, the fixation of the jig device is completed. Therefore, the cutting preparation operation including the installation of the jig device can be performed quickly and easily, It is also possible to shorten the time.

In addition, if rolling wheels are provided at the outer end of the elongated support piece to function as an insertion guide, the jig device can be easily inserted into the entrance hole or can be pulled out from the entrance hole, and is kept at a certain distance from the inner surface of the frontward- It is possible to perform the insertion and pull-out operations in a state that the front pulley can be prevented from being damaged or the like.

Furthermore, the jig device of the present invention can have a configuration capable of spraying cooling water. With this configuration, even when the entrance hole is deepened and the injection of the cooling water from the entrance of the entrance hole is difficult, the friction between the wire saw and the workpiece It is possible to spray the cooling water efficiently and timely at the portion where the cutting is carried out by the heating means, so that the frictional heat is reduced and the work is further improved, and the dust and the dust are effectively removed.

1 is a schematic perspective view showing a concept of cutting a wire saw ground by inserting a jig device in an entrance hole according to a tunnel construction method using a wire saw.
FIGS. 2 and 3 are schematic cross-sectional views along the line AA of FIG. 1, respectively, showing the cutting process sequentially.
4 is a schematic perspective view of a jig apparatus according to the first embodiment of the present invention.
5 is a schematic side view of a jig apparatus according to the first embodiment of the present invention.
6 is a schematic perspective view of a jig apparatus according to a second embodiment of the present invention.
7 is a schematic side view of a jig apparatus according to a second embodiment of the present invention.
Fig. 8 is a schematic enlarged view of the circle B portion of Fig. 4 showing the detailed configuration of the support member provided in the jig device of the present invention.
Fig. 9 is a schematic enlarged view corresponding to Fig. 8 showing the supporting member of the present invention modified to have a configuration in which the telescopic supporting piece can be turned and bent;
Fig. 9 is a schematic enlarged view corresponding to Fig. 8 showing a support member of the present invention modified to have a structure suitable for functioning as an insertion guide.
10 is a schematic half cross-sectional perspective view showing a state in which the jig device of the present invention is inserted into the entrance holes formed in the workpiece, respectively.
11 is a schematic side view of one jig device in the state shown in Fig.
12 is a schematic cross-sectional view along the line PP in Fig.
FIG. 13 is a schematic half cross-sectional perspective view corresponding to FIG. 10 showing a state in which the jig device of the present invention is fixed in an entry hole and the ground is cut by a wire saw.
Fig. 14 is a schematic side view corresponding to Fig. 11 for one jig device in the state of Fig. 13. Fig.
15 is a schematic cross-sectional view along the line RR in Fig.
16 is a schematic enlarged view of the circle D portion of Fig.
Fig. 17 is a schematic enlarged view of a circle D portion of Fig. 14 corresponding to Fig. 16 showing a configuration in which the outer end portion of the telescopic support piece provided in the jig device is inclined.

The jig device 1 of the present invention is a jig device for cutting a workpiece made of a hard object such as a rock or concrete as described in the paragraph of the Background of the Invention, And the wire saw 100 is inserted into the wire saw 210 so that the wire saw 100 can be moved while being redirected. The use of the jig device 1 according to the present invention is not limited as long as it is a place for cutting hard objects such as rocks and concrete. However, since it can be very useful for tunnel construction, The jig device 1 of the present invention will be described by exemplifying a method of constructing the jig. The entrance direction of the entry hole 210 is referred to as "rearward" with reference to the jig device 1 as described above, and the direction inside of the entry hole 210 is referred to as "forward ".

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby.

Figs. 4 and 5 show a schematic perspective view and a schematic side view, respectively, of a jig device 1 according to a first embodiment of the present invention, and Figs. 6 and 7 respectively show a first embodiment of the jig device 1 according to the second embodiment of the present invention A schematic perspective view and a schematic side view of the jig device 1 are shown.

As shown in the drawings, the jig device 1 of the present invention includes a rod-shaped main body 10 that is elongated and a front pulley 11 that is rotatably provided at a front end of the main body 10 And a support member 2 for supporting the main body 10 so that the inner surface of the entrance hole 210 and the main body 10 can be maintained at a predetermined interval when the jig apparatus 1 is inserted into the entrance hole 210 . A rear pulley 12 may be rotatably provided at the rear end of the main body 10, if necessary.

Specifically, in the case of the first embodiment illustrated in FIGS. 4 and 5, the main body 10 is made of a long elongated rod-like member. In the gap between the front pulley 11 and the rear pulley 12, In the case of the second embodiment illustrated in Figs. 6 and 7, the wire saw 100 is arranged at a distance between the front pulley 11 and the rear pulley 12 And is disposed outside the main body 10. 4 and 5, when the main body 10 is made of a pipe member having an internal hollow, the wire saw 100 that has passed through the rear pulley 12 is inserted into the inside of the main body 10 So that it can be wound around the front pulley 11. In this configuration, the wire saw 100 is not exposed to the outside. Further, as described later, a conduit for supplying hydraulic pressure or air pressure to the expansion and contraction support piece 21 of the support member 2, an electric wire for supplying electric power, The cooling water supply pipe for supplying the cooling water can be disposed inside the main body 10, so that the appearance of the jig device 1 can be simplified. However, in the present invention, the main body 10 is not limited to such a pipe member but is formed of a simple rod member, so that the wire saw 100 and the hydraulic / pneumatic supply conduit, the electric power supply wire, 10). In FIGS. 4 to 7, the illustration of the hydraulic / pneumatic supply conduit, the electric power supply line, and the cooling water supply pipe is omitted for the sake of convenience.

The front pulley 11 and the rear pulley 12 are rotatably provided at both ends of the body 10 so that the wire saw 100 is wound around the front pulley 11 and the rear pulley 12, 100) is changed. In the embodiment illustrated in the figures, a lid 13 for covering and protecting a portion of the front pulley 11 and the rear pulley 12 is provided. The lid 13 may be provided as needed, This is a possible member.

In the jig device (1) of the present invention, the main body (10) is provided with a support member (2). 8 shows a schematic enlarged view of the circle B portion of FIG. 4 showing the detailed configuration of the support member 2, wherein the support member 2 is provided with a plurality Extending and retracting support pieces 21 are provided. The stretchable support piece 21 may be directly coupled to the side surface of the main body 10 as shown in the figure but may further include a coupling portion 20 coupled to the main body 10, 21 may be coupled to the engaging portion 20 and the engaging portion 20 may be coupled to the main body 10. The engaging portion 20 may be constituted by a ring-shaped member which can be engaged with the outer periphery of the main body 10, as illustrated in the figure. The stretchable support piece 21 is a stretchable member that is integrally provided with the engaging portion 20 so as to extend in the lateral side direction of the main body 10 and to extend and retract. The stretchable support pieces 21 are provided in a plurality of two or more, and are radially positioned along the circumference of the main body 10.

When the jig device 1 of the present invention is used for tunnel construction, the supply of electricity may not be smooth at the tunnel construction site, so that the expansion and contraction support piece 21 is composed of a jack device that is stretched or contracted by hydraulic pressure or pneumatic pressure desirable. However, the configuration in which the expansion and contraction support piece 21 is stretched and contracted is not limited to the jack device using hydraulic or pneumatic presses as described above, and the expansion and contraction support piece 21 is configured in the form of a member that elongates and contracts by the operation of the electric motor It is possible. That is, in the present invention, the stretching and supporting piece 21 may be constituted by a member having a structure in which the length thereof can be expanded and contracted, and there is no particular limitation on the specific stretching configuration. As mentioned above, a conduit for supplying hydraulic or pneumatic pressure or an electric wire for supplying electricity to extend or contract the expansion and contraction support piece 21 is disposed inside the main body 10 along the main body 10, 10). In FIGS. 4 to 7, the hydraulic / pneumatic supply conduit, the electric power supply line, and the cooling water supply pipe described later are omitted for the sake of convenience.

Fig. 9 shows a schematic enlarged view corresponding to Fig. 8 showing the support member 2 of the present invention modified to have a structure suitable for functioning as an insertion guide. In the embodiment shown in FIG. 9, rolling wheels 22 are provided at the outer ends of the expansion and contraction support pieces 21. When the rolling wheel 22 is provided on the expansion and contraction support piece 21 as described above when the jig device 1 is inserted into the entrance hole 210 as described later, The jig device 1 is smoothly inserted into the entrance hole 210 while keeping the state of being separated from the inner surface of the entrance hole 210 by the length of the expansion and contraction support piece 21 A useful effect is realized. As described above, the supporting member 2 is provided with the plurality of stretching supporting pieces 21, and the rolling wheels 22 may be provided on the whole of the stretching supporting pieces 21. [ However, even if the rolling wheels 22 are provided only on a part of the plurality of the expansion and contraction support pieces 21, it is possible to sufficiently exhibit the advantageous effect when the entrance hole 210 is inserted.

The supporting member 2 having the stretching and holding pieces 21 in the jig device 1 of the present invention may be provided only on the main body 10, May be provided in a plurality of two or more. When the support members 2 are provided in this manner, there is an advantage that the support member 2 can be effectively installed at a position where there is a possibility of sagging in the main body 10 or a displacement due to vibration .

 The wire saw 100 cuts the workpiece by friction while moving, and therefore a large frictional heat is generated in the cutting process of the workpiece. The jig device (1) of the present invention is provided with a spray nozzle (3) for spraying cooling water in the direction of the wire saw (100) so that the frictional heat can be efficiently cooled. That is, the injection nozzle 3 is formed on the main body 10 in the direction in which the wire saw 100 rubs against the workpiece on the side surface of the main body 10. It is preferable that a plurality of injection nozzles 3 are provided at intervals in the longitudinal direction of the main body 10 as illustrated in the figure.

Although not shown in the drawing, the injection nozzle 3 is connected to a cooling water supply pipe for supplying cooling water from the outside. When the main body 10 is made of a pipe member, the cooling water supply pipe can be disposed inside the main body 10. However, the cooling water supply pipe need not necessarily be disposed inside the main body 10 and may be disposed in close contact with the outer surface of the main body 10 so as not to interfere with the movement of the wire saw 100 from outside the main body 10 have.

10 is a schematic half cross-sectional perspective view showing a state in which the jig device 1 of the present invention is inserted into the entrance hole 210 formed by perforating from the vertical surface of the ground 200. In FIG. 11, There is shown a schematic side view of the entry hole 210 into which the jig device 1 is inserted and FIG. 12 shows a schematic cross-sectional view along the line PP of FIG. 10 and 11, in the case of some of the supporting members 2 of the supporting member 2 as in the embodiment of Fig. 9, the rolling wheels 22 are provided on the ends of some of the elastic supporting pieces 21 of the elastic supporting piece 21 And the rotary wheel 310 of the wire saw rotating device 300 for rotating the wire saw 100 is not shown in the drawing. However, in the present invention, the rolling wheels 22 may be provided at the ends of all the expansion and contraction support pieces 21, and in all the support members 2 coupled to the body 10, A wheel 22 may be provided.

 As shown in the drawing, for example, in order to construct a tunnel, the entrance hole 210 is formed by drilling the entrance hole 210 from the surface position of the ground previously designed in the outer wall of the tunnel construction line or the tunnel construction site, Holes 210, respectively. When inserting the jig device 1, as shown in the drawing, the length of the expansion and contraction support piece 21 is contracted. 9, when the rolling wheel 22 is provided at the end of the expansion and contraction support piece 21, the rolling wheel 22 is in close contact with the inner surface of the entry hole 210, The jig device 1 can be easily pushed into the entry hole 210 while the rolling operation of the rolling wheels 22 is maintained at a certain distance from the inner surface of the entry hole 210. [ Is inserted into the hole (210). Therefore, not only the operation of inserting the jig device 1 into the entry hole 210 can be facilitated, but also the operation of inserting the jig device 1 into the entrance hole 210, The collision and the damage caused thereby can be prevented.

13 is a schematic half cross-sectional perspective view corresponding to FIG. 10 showing a state in which the jig device 1 of the present invention is fixed in the entrance hole 210 and the ground 200 is cut by the wire saw 100 Fig. 14 is a schematic side view corresponding to Fig. 11 for one jig device 1 in the state of Fig. 13, and Fig. 15 is a schematic cross-sectional view along the line RR of Fig. 13.

After the jig device 1 is inserted into the entry hole 210 at the designed depth as shown in Figs. 13 to 15, the stretchable holding piece 21 is stretched. That is, when the stretching and supporting piece 21 is a jack device operated by pneumatic pressure or hydraulic pressure, the stretching and supporting piece 21 is stretched by supplying pneumatic pressure or hydraulic pressure, When the stretching and supporting piece 21 is formed, the stretching and supporting piece 21 is stretched by supplying a power source such as electricity. As shown in the drawing, when the plurality of stretchable holding pieces 21 are elongated, the outer ends of the respective stretchable and contractive holding pieces 21 come into close contact with the inner surface of the entry hole 210, The jig device 1 is firmly disposed in the entrance hole 210 while maintaining the space between the main body 10 of the main body 1 and the inner surface of the entrance hole 210. [

Since the jig device 1 is fixedly disposed inside the entrance hole 210 while keeping a certain distance from the inner surface of the entrance hole 210 by the support member 2, even if the self weight of the jig device 1 acts The main body 10 of the jig device 1 is not bent and sagged. In addition, even if the wire saw 100 starts to move and vibration occurs, the position of the jig device 1 in the entrance hole 210 is not changed, and the gap with the inner surface of the entrance hole 210 can be maintained . Therefore, the collision of the front pulley 11 of the jig device 1 with the inner wall of the entrance hole 210 is prevented or minimized, so that the front pulley 11 is in a freely rotating state, The wire saw 100 can move smoothly without any hindrance, and the cutting by the wire saw 100 can be performed efficiently according to the plan.

Especially, in the present invention, when the jig device 1 is fixed in the insertion hole 210, it is sufficient to supply the pneumatic, hydraulic, or electric power to extend the expansion and contraction support piece 21, ) Can be performed very quickly and easily.

After the jig device 1 is inserted and fixed in the entrance hole 210 as described above with reference to FIGS. 2 and 3, the rotation of the wire saw rotating device 300, in which the wire saw 100 is wound, The wire saw 100 is moved by rotating the wheel 310 so that the wire saw 100 which is in close contact with the workpiece between the two entrance holes 210 linearly moves while cutting the workpiece.

As described above, the jig device 1 of the present invention may be provided with a spray nozzle 3 capable of spraying cooling water. In this case, when cutting the workpiece by moving the wire saw 100, 210, the cooling water is sprayed through the spray nozzle 3 to the portion where the wire saw 100 is ground and the ground is cut, thereby reducing the frictional heat and washing the dust and the like generated during the cutting process with the cooling water. 13 and 14 show the state in which the cooling water is injected through the injection nozzle 3. [

As described above, when the cooling water is simply injected from the inlet of the inlet hole 210, the cooling water may not reach the deep hole of the inlet hole 210. However, in the jig apparatus 1 of the present invention, The cooling water can be efficiently sprayed to the required friction region through the main body 10 of the jig device 1 inserted in the nozzle 210. This makes it possible to supply the cooling water smoothly even if the depth of cut is deep, So that it is possible to prevent the problem that the cooling water does not reach the deep portion of the entrance hole 210. In addition,

After completion of cutting of the workpiece, the expansion and contraction support piece 21 is contracted again so that the jig device 1 can move freely within the entrance hole 210. Thereafter, the jig device 1 is inserted into the entrance hole 210 . The rolling wheel 22 is in close contact with the inner surface of the entrance hole 210 and rolls on the inner surface of the entrance hole 210 when the expansion and contraction support piece includes the rolling wheels 22 at the outer end thereof The jig device 1 can be easily pulled out from the entry hole 210, so that the drawing operation of the jig device 1 can proceed very easily.

Fig. 16 shows a schematic enlarged view of the circle D portion of Fig. 16, the expansion and contraction support piece 21 is provided on the jig device 1 so as to be vertically in close contact with the inner surface of the entrance hole 210. In this embodiment, However, the expansion and contraction support piece 21 does not necessarily have to be vertically in close contact with the inner surface of the entrance hole 210. Fig. 17 is a cross-sectional view of Fig. 14 corresponding to Fig. 16 showing a configuration in which the outer end of the expansion and contraction support piece 21, that is, the end portion that is in close contact with the inner surface of the entrance hole 210 is inclined rearward (toward the entrance of the entrance hole) A schematic enlarged view of the circle D portion is shown. In the cutting process of the workpiece, a force of pulling backward is applied to the jig device 1, that is, a force of pulling the jig device 1 from the entry hole 210 is applied. 1 is inclined at a predetermined angle? From the vertical direction to the rear direction, the resistance against the pulling force toward the rear is further increased, so that the jig device 1 is not pulled out from the entry hole 210 but can be firmly held at the fixed position. Particularly, when the inner surface of the entrance hole 210 is a rough surface, the outer end of the expansion and contraction support piece 21 is caught by the rough portion of the inner surface of the entrance hole 210 by tilting backward as described above, It will be able to exert its resistance.

1: jig device
2: Support member
3: injection nozzle
10: Body
11: Front pulley
12: Rear pulley
20:
21:
22: rolling wheels
100: wire saw
210: entry ball

Claims (5)

A jig device inserted into an entry hole drilled in a workpiece for cutting a workpiece using a wire saw,
A body made of a bar-shaped member; And
A front pulley rotatably provided at a front end of the main body and wound and rotated by a wire saw;
The main body is provided with a supporting member including a plurality of expandable and contractible holding pieces extending in a lateral side direction of the main body,
The main body and the front pulley are positioned and fixed with an interval from the inner wall of the entrance hole by being stretched in the state in which the main body is inserted into the entry hole and the extension and retraction pieces of the support member are extended and brought into close contact with the inner wall of the entrance hole;
Wherein the plurality of expansion and contraction support pieces have a configuration in which a stretchable support piece having an inner end portion joined in a hinge structure so as to be capable of rotating the expansion and contraction piece is included.
The method according to claim 1,
The plurality of expansion and contraction support pieces include a stretchable support piece provided at an outer end portion of the rolling wheel in rolling contact with the inner wall of the entrance hole when the jig device is inserted into the entry hole or drawn out from the entrance hole A wire saw jig device characterized by.
delete A jig device inserted into an entry hole drilled in a workpiece for cutting a workpiece using a wire saw,
A body made of a bar-shaped member; And
A front pulley rotatably provided at a front end of the main body and wound and rotated by a wire saw;
The main body is provided with a supporting member including a plurality of expandable and contractible holding pieces extending in a lateral side direction of the main body,
The main body and the front pulley are positioned and fixed with an interval from the inner wall of the entrance hole by being stretched in the state in which the main body is inserted into the entry hole and the extension and retraction pieces of the support member are extended and brought into close contact with the inner wall of the entrance hole;
Wherein a jig of the wire saw has a structure in which a spray nozzle for spraying cooling water is provided on a side surface of the main body facing a position where the wire saw is in close contact with the workpiece and is cut.
The method according to any one of claims 1, 2, and 4,
Wherein a plurality of support members are provided in the longitudinal direction of the main body with an interval therebetween.
KR20140054328A 2014-05-07 2014-05-07 Jig Apparatus for Tunnel Excavation using Wire-Saw KR101508205B1 (en)

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KR20180092143A (en) 2017-02-08 2018-08-17 김효성 Supporter of drag bar in rock cutter and arm thereof
KR20180114633A (en) 2017-04-11 2018-10-19 주식회사 장평건설 Rock cutting apparatus using wire saw
KR20190025583A (en) 2019-02-19 2019-03-11 김준모 The Excavation method applied by combination of Directional Drilling with Linear Wire Cutting.
KR102130541B1 (en) 2019-06-03 2020-07-06 주식회사 코리아카코 The Multiple Artificial Joints Formation Method using Wire Saw and Wire Connection Device of Wire Saw and The Tunnel Excavation Method using the same
KR102365041B1 (en) 2021-04-21 2022-02-23 광성지엠(주) Tunnel excavation method using free surface and tunnel excavation device for formation of free surface

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KR20200091786A (en) * 2019-01-23 2020-07-31 최인환 Wire-saw excavation apparatus that can change the cutting line according to the cutting section tunnel excavation method using the same

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180092143A (en) 2017-02-08 2018-08-17 김효성 Supporter of drag bar in rock cutter and arm thereof
KR20180114633A (en) 2017-04-11 2018-10-19 주식회사 장평건설 Rock cutting apparatus using wire saw
KR101977659B1 (en) * 2017-04-11 2019-05-13 주식회사 장평건설 Rock cutting apparatus using wire saw
KR20190025583A (en) 2019-02-19 2019-03-11 김준모 The Excavation method applied by combination of Directional Drilling with Linear Wire Cutting.
KR102130541B1 (en) 2019-06-03 2020-07-06 주식회사 코리아카코 The Multiple Artificial Joints Formation Method using Wire Saw and Wire Connection Device of Wire Saw and The Tunnel Excavation Method using the same
KR102365041B1 (en) 2021-04-21 2022-02-23 광성지엠(주) Tunnel excavation method using free surface and tunnel excavation device for formation of free surface

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