KR101733124B1 - Removable connecting structure for cable of power transmission and distribution lile - Google Patents

Abstract

The present invention relates to a transmission and distribution connecting structure having a function of attaching and detaching a wire, comprising: a transmission and distribution wire lifting passage formed between a wall side shelf and an inner side shelf of an underground tunnel; a transmission and distribution wire lifting means provided on a straight lower side of the transmission and distribution wire lifting passage; a transmission and distribution wire horizontal movement means for moving the lifted transmission and distribution wire onto the wall side shelf and the inner side shelf in a horizontal direction and stopping the same while moving in a central passage of the underground tunnel; and a transmission and distribution wire fixing means for fixing and attaching the stopped transmission and distribution wire to the wall side shelf and the inner side shelf. The components are capable of sufficiently securing an insulation distance from an underground transmission and distribution wire, in general, and quickly and conveniently performing a cable-laying work for installing the underground transmission and distribution wire. Also, it is possible to easily perform a work of lifting laid cables onto shelve and moving the same in a horizontal direction to stop the same on the wall side shelf and the inner side shelf, a work of fixing a transmission and distribution wire to the wall side shelf and the inner side shelf, and a work of removing the cables on the shelves to bring the same down.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transmission /

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission and distribution connection structure having a function of detaching and attaching an electric wire, and more particularly, It is possible to perform the cable cutting operation quickly and easily. In addition, it is possible to perform the operation of lifting the inserted cable on the shelf and horizontally moving it to the wall shelf and the inner shelf, fixing the transmission and distribution wires to the wall shelf and the inner shelf, And more particularly, to a transmission / distribution connection structure having a detachable connection / disconnection function of a cable so as to easily perform a work for detaching and lowering a cable.

Generally, transmission and distribution lines consist of processing facilities or underground facilities. The processing facility is constructed to insulate and support the transmission and distribution lines between the poles installed at regular intervals on the roadside. The underground facility is to construct a tunnel in the ground and to support the transmission and distribution wires on a plurality of shelves installed on the wall of the tunnel .

Underground facilities are equipped with a multi-level shelf on the inner walls of both sides of underground tunnels embedded in concrete structures underground to support multiple transmission and distribution lines.

As a prior art, a Korean Registered Patent No. 10-0911238 entitled " Prior Art " (hereinafter referred to as " Prior Art ") is known.

The power distribution position adjuster of the prior art power distribution line includes a shelf installed on an inner surface of an underground tunnel embedded in the underground and supporting an underground cable (hereinafter referred to as a 'power distribution line'); A plurality of fixing pin insertion holes spaced apart from each other around the rotation axis insertion hole are formed along the clockwise or counterclockwise direction and the rotation shaft insertion holes are formed in the rotation axis insertion hole, A pair of first and second hooks which are rotatably held in contact with each other through a rotation axis to be inserted therethrough, a fixing pin inserted through the fixing pin insertion holes of the first and second hooks to fix the first and second hooks to each other, ; A horizontal conveying device for horizontally moving the clamp, comprising a screw rotatably installed on the bottom surface of the shelf, a first motor for driving the screw, and a case coupled to the screw and moving along the longitudinal direction of the screw, A second motor for rotating the drum, and a clamping / conveying device having a vertically moving device for moving the clamp up and down; A control unit provided on the shelf for controlling operations of the first and second motors of the clamp transfer device; And an input unit provided on the shelf for controlling the operation of the control unit so as to improve work efficiency and stability.

However, in the prior art, since a clamp, a clamp transfer device, a control unit, and an input unit must be provided for each shelf in order to place a distribution line on a shelf, the overall structure of the facility becomes complicated. Even after the distribution line is placed on the shelf, Since the clamp and the clamp transfer device are located close to the power distribution line, a sufficient insulation distance can not be ensured and there is a possibility that failure or fire may occur due to leakage or arc generation.

Generally, in order to install a distribution line in an underground tunnel, a cable is pulled from a manhole provided at one end of an underground tunnel and pulled from a manhole provided at the other end of the underground tunnel to perform a cable pulling operation.

In this inserting operation, a cable drum in which a cable is wound on a manhole upper surface provided at one end of an underground tunnel, and a winding drum having a winding drum for winding a lead wire on the upper surface of the other manhole are disposed. In a state in which a plurality of cable guide devices having guiding rollers for guiding the guide wire are arranged in a state in which the wire guide wire is fixed to the tip end of the cable released from the cable drum, To be wired inside the underground tunnel, and at this time, the cable guide device guides the cable to be drawn.

However, the inserting operation is performed on the central tunnel of the underground tunnel. After the cable is completed, the cable must be lifted and placed on the shelf. If the cable is light, the operator can easily lift the cable and seat it on the shelf. It is difficult for the operator to put the cable on the shelf.

In addition, since a plurality of cable guide devices are required to be installed in the central passage for inserting work, air is delayed due to the installation work.

Therefore, it is possible to secure a sufficient insulation distance from the transmission / distribution line and to perform the cable pulling operation quickly and easily without installing a plurality of cable guiding devices separately. In addition, It is required to develop a technique for easily performing a work for cutting a cable on a cable.

Korean Registered Patent No. 10-0911238 "Distribution Distribution Board of Distribution Line"

Accordingly, it is an object of the present invention to provide an electric power transmission system capable of securing a sufficient insulation distance from an underground power transmission and distribution line, and capable of quickly and easily performing a cable connection work for installing an underground transmission and distribution line, To move the wire to the wall side shelf and the inner side shelf, to secure the transmission / distribution wire to the wall side shelf and the inner side shelf, and to remove the cable on the shelf side, To provide a transmission / distribution connection structure.

According to an aspect of the present invention, A plurality of wall side shelves and a plurality of inner side shelves installed on both sides with respect to the center passage of the underground tunnel; A transmission / distribution line elevation passage formed between the inner end of the wall-side shelf and the outer end of the inner shelf and through which the transmission / distribution line passes; A transmission / distribution line lifting / lowering means provided at a lower portion of the transmission / distribution line ascending / descending passage for lifting / lowering the transmission / distribution line; A transmission and distribution line for horizontally moving a transmission and distribution line traveling between a wall side shelf and an inner side shelf through a transmission and distribution line elevation passage by the transmission and distribution line elevation means while moving along a central passage at the bottom of the underground tunnel, A horizontal moving means; And a transmission / distribution line fixing means for fixing the transmission / distribution line to the upper surface of the wall-side shelf and the inner shelf; And the transmission / distribution line lifting / lowering means includes a device box installed at a lower portion of the underground tunnel and having both side walls and a floor, and a lower end fixed to the bottom of the device box and an upper end fixed to the bottom of the underground tunnel A lifting bar coupled to an upper end of the lifting rod and lifted and lowered through a through hole formed in the bottom of the underground tunnel directly below the power transmission and distribution line lifting channel; Wherein the transmission and distribution line horizontally moving means is provided with an arcuate groove along an outer circumferential surface of the transmission and distribution line supporting roller, A vertical hydraulic cylinder vertically installed on the traveling carriage and having a lifting rod for lifting and lowering operation; A horizontal hydraulic cylinder coupled to an upper end of the elevating operation rod and having a horizontal operation rod horizontally operated; a rotary motor having a motor shaft coupled to a distal end of the horizontal operation rod and rotated; And a horizontal movement bar for the transmission / distribution line. The transmission / distribution line fixing means includes a transmission / distribution line fixture formed in an inverted U-shape so as to cover the transmission / distribution line, an extension formed horizontally at both ends of the transmission / And a bolt inserted through the extended portion and fastened to the buried nut. The present invention also provides a transmission and distribution connection structure having a detachable connection function of a wire.

According to the transmission and distribution connection structure of the present invention, the transmission and distribution line elevation passage is formed between the wall side shelf and the inner side shelf of the underground tunnel, and the transmission and distribution line elevation means is provided directly below the transmission and distribution line elevation passage, And a transmission and distribution line horizontal moving means for horizontally moving the raised transmission and distribution line on the wall side shelf and the inner side shelf while moving in the central passage of the wall side shelf and the inner side shelf and a transmission and distribution line fixing means for fixing the installed transmission and distribution line to the wall side shelf and the inner side shelf Therefore, it is possible to quickly and easily carry out the operation of inserting the cable for installation of the underground transmission and distribution line, and also to raise the insulated cable on the shelf, To move them to the wall shelf and the inner shelf, and to place the transmission and distribution wires on the wall shelf and the inner shelf By stripping the cable on the job and shelves that can be easily carried to the job cuts.

1 to 11 show a preferred embodiment of a transmission / distribution connection structure having a detachable / attachable function of a wire according to the present invention,
1 is a perspective view showing a part of an underground power transmission line according to the present invention,
2 is a perspective view showing a state in which a part of the underground tunnel and the pit are removed,
3 is an enlarged exploded perspective view of the elevating means and the cable attaching means,
4 is an enlarged exploded perspective view of the transmission / distribution line horizontal moving means,
5 is a perspective view showing a process of pulling the transmission /
FIG. 6 is a front view showing a process of raising the transmission /
7 to 9 are front views showing the process of horizontally moving the transmission / distribution line on the wall side shelf,
10 is a front view showing a process of horizontally moving the transmission / distribution line on the inner shelf,
11 is a front view showing a process of fixing a transmission / distribution line to a shelf by a fixture.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a transmission / distribution connection structure having a wire detachment / attaching function according to the present invention will be described in detail with reference to the preferred embodiments illustrated in the accompanying drawings.

As shown in Fig. 1, the transmission / distribution connection structure having the function of detaching and attaching electric wires according to the present embodiment is composed of an underground tunnel, a plurality of shelves provided inside the underground tunnel, and an underground transmission / It is applied to the track.

The underground tunnel 10 is embedded in the ground as a concrete structure. The underground tunnel 10 is composed of both side walls 11 and 12, a floor 13 and a ceiling 14. Manholes are provided at both ends of the underground tunnel 10, and a description thereof will be omitted.

A plurality of wall side shelves 100 and a plurality of inner side shelves 200 are installed on both sides of the center tunnel 15 with respect to the underground tunnel 10.

The wall side shelf 100 is fixed by an anchor bolt (not shown) embedded in and projected from both side walls 11 and 12 of the underground tunnel 10 and an anchor nut (not shown) Are fixedly installed by bolts (not shown) and nuts (not shown) on the columns 16 installed on both sides of the central passage 15 of the underground tunnel 10, and the wall side shelf 100 and the inner side shelf The detailed description of the fixing structure of the ink jet recording head 200 will be omitted.

A transmission and distribution line CP is formed between the inner end of the wall side shelf 100 and the outer end of the inner shelf 200 to allow the transmission and distribution line 20 to pass therethrough.

In the lower part of the transmission / distribution line lifting passage (CP), a transmission / distribution line lifting means (300) for lifting / lowering the transmission / distribution line (20) is provided.

The transmission and distribution line elevating means 300 includes a device box 310 installed at a lower portion of the underground tunnel 10 and having both side walls 311 and 312 and a bottom 313, The elevating hydraulic cylinder 320 having a lower end fixed to the lower end of the elevating rod 321 and a lower end fixed to the lower end of the elevating rod 321 and fixed to the bottom 13 of the underground tunnel 10, A platform 33 coupled to an upper end of the platform 33 and being lifted and lowered through a through hole 331 formed in the bottom 13 of the underground tunnel 10 directly below the transmission and distribution line CP, And a transmission / distribution line support roller 340 rotatably installed on the support shaft.

The device box 310 is made of a concrete structure like the underground tunnel 10.

An entrance 314 is formed in the bottom 13 of the underground tunnel 10 so that an operator can move between the device box 310 and the underground tunnel 10, A ladder 315 may be provided between the bottom 313 of the base plate 310 and the bottom plate 313. The ladder 315 may be replaced with a concrete step in the course of constructing the underground tunnel 10 and the device box 310.

The through hole 331 formed in the bottom 13 of the underground tunnel 10 is configured to be normally closed by the platform 330. [

The transmission / distribution line support roller 340 may use a simple circular roller, but it is preferable to use a roller having an arcuate groove along an outer circumferential surface as shown in the drawing to prevent the transmission / distribution line from being separated during the wire cutting process.

The transmission / distribution line support rollers 340 are rotatably installed by supporting the support pieces 341 coupled to the left and right sides of the platform 330 with support shafts 342.

The transmission and distribution connection structure having the function of detaching and attaching the wire according to the present embodiment is configured to move along the central passage 15 of the bottom 13 of the underground tunnel 10, A horizontal movement means 400 for horizontally moving the transmission and distribution line 20 raised between the wall side shelf 100 and the inner side shelf 200 to the predetermined position on the wall side shelf 100 or the inner side shelf 200 ).

The transmission and distribution line horizontally moving means 400 includes a traveling carriage 410 traveling along the central passage 15 and vertical traveling rods 421 vertically installed on the traveling carriage 410, A horizontal hydraulic cylinder 430 having a hydraulic cylinder 420 and a horizontal operation rod 431 coupled to the upper end of the lifting operation rod 421 and horizontally operated; And a transmission and distribution line horizontally moving bar 450 coupled to a front end of the motor shaft 441 to horizontally move the transmission and distribution line 20 by a rotation motor 440 having a rotating motor shaft 441 .

The traveling carriage 410 includes a bogie frame 411, a plurality of wheels 412 mounted on both sides of the lower end of the bogie frame 411, a lower end of the bogie frame 411, And a lower plate 413 that supports the vertical hydraulic cylinder 420 and an upper plate 414.

The traveling carriage 410 may be constituted by a manual traveling carriage in which a wheel 412 is rotatably installed so as to be pushed or pulled by an operator or a wheeled carriage 412 which can be driven by a power such as a rotary motor, .

The vertical hydraulic cylinder 420 has a lower end fixed to the lower plate 413 and an upper end fixed to the upper plate 414. The elevating operation rod 421 passes through the through hole 415 formed in the upper plate 414, So as to be elevated and lowered.

The horizontal hydraulic cylinder 430 is inserted into the cylindrical coupling hole 432 fixed to the upper end of the elevating rod 421 of the vertical hydraulic cylinder 420 and the bolt (not shown) (421).

The rotation motor 440 is mounted on a mounting plate 442 fixedly coupled to the front end of the horizontal operating rod 431. The motor shaft 441 is inserted into the through hole 443 formed in the mounting plate 442 So as to protrude therethrough.

The transmission / distribution line horizontally moving bar 450 has a through hole 451 to fasten a bolt (not shown) in a state where the motor shaft 441 of the rotary motor 440 is passed through the through hole 451 It can be fixedly coupled to the front end of the motor shaft 441.

The lifting / lowering inlet cylinder 320 and the vertical hydraulic cylinder 420 use a conventional hydraulic cylinder operated by a compressor, a hydraulic oil tank, a solenoid valve, and the like, and are mounted by a conventional hydraulic cylinder mounting method. And description thereof will be omitted.

The transmission / distribution line 20 is fixedly attached to the upper surfaces of the wall side shelf 100 and the inner side shelf 200 by the transmission / distribution line fixing means 500.

The transmission / distribution line fixing means 500 includes a transmission / distribution line fixing hole 510 formed in an inverted U-shape so as to cover the transmission / distribution line 20, and an extension portion extending horizontally at both left and right ends of the transmission / And a bolt 540 inserted through the extension 520 and fastened to the buried nut 530. The bolts 540 are inserted into the bolts 540 through the bolts 540, .

The buried nuts 530 may be buried in the process of constructing the wall side shelf 100 and the inner side shelf 200 as a concrete structure.

Hereinafter, a process of inserting, elevating, moving, fixing, attaching, releasing, horizontally moving, and descending the transmission / distribution line 20 with the transmission / distribution connection structure having the detachable / attachable function of the wire according to the present embodiment will be described.

These processes are performed by operating and stopping the elevating hydraulic cylinder 320, the vertical hydraulic cylinder 420, the horizontal hydraulic cylinder 330, and the rotary motor 340 by operating switches or valves, A specific illustration and description of a switch or a valve for this purpose will be omitted.

<Transmission and distribution line inscription course>

(Not shown) in which a transmission and distribution line for transmission and distribution is wound around a manhole (not shown) provided at one end of the underground tunnel 10 and a manhole (not shown) provided at the other end of the underground tunnel 10 When a wire (not shown) is connected to the end of a transmission / distribution line that is released from the transmission / reception line drum in a state where a winding device (not shown) having a wire winding drum The transmission and distribution line is released. At this time, the transmission / distribution line is guided in a state in which the transmission / distribution line is supported by the transmission / distribution line support roller 340 by being supported by the transmission / distribution line support roller 340 of the transmission / distribution line elevation means 300, It can be prevented from being damaged while being in contact with the bottom 13 of the tunnel 10 (see Fig. 5).

Therefore, it is possible to safely, quickly, and simply carry out the cutting operation without installing a plurality of cable guide devices having guide rollers separately.

At this time, since the transmission / distribution line support roller 340 uses a roller having an arcuate groove, the inserted transmission / distribution line is not separated from the transmission / reception line support roller 340 at random.

<Transmission and distribution line ascension process>

When the lifting hydraulic cylinder 320 of the power transmission and distribution line lifting means 300 is lifted up in a state where the lifting and lowering transmission line 20 is supported by the transmission and distribution line support roller 340, The lifting base 330 coupled to the upper end of the rod 321 and the power transmission and reception line support roller 340 supported by the platform 330 are lifted up and the power transmission and distribution line supported by the power transmission and distribution line support roller 340 ).

At this time, since the platform 330 is configured to ascend and descend through the through hole 331 formed in the bottom 13 of the underground tunnel 10 directly below the transmission and distribution line elevation passage CP, The supported transmission and distribution line 20 passes through the transmission and distribution line CP between the wall side shelf 100 and the inner side shelf 200 and the lower end of the outer circumference of the rising transmission and distribution line 20 is connected to the wall side shelf 100 When the height of the upper surface of the inner shelf 200 is reached, the elevating hydraulic cylinder 320 is stopped (see FIG. 6).

<Transmission Line horizontal movement process>

When the elevating hydraulic cylinder 320 is stopped, the transmission / distribution line 20 is horizontally moved to the fixed position on the upper surface of the wall side shelf 100 or the inner side shelf 200 by the transmission / distribution line horizontal moving means 400.

First, when the horizontal line 450 of the transmission / distribution line horizontal line is not exactly located between the upper and lower layers of the inner shelf 200, the vertical hydraulic cylinder 420 is moved up or down to move the horizontal line of the transmission / And is positioned between the upper and lower layers of the shelf 200.

When the vertical hydraulic cylinder 420 is raised or lowered, the lifting rod 421 is lifted or lowered and the horizontal hydraulic cylinder 430 and the horizontal hydraulic cylinder 430, which are coupled to the upper end of the lifting rod 421, A rotation motor 440 coupled to the front end of the horizontal operation rod 431 and a transmission and distribution line horizontal movement bar 450 coupled to the front end of the motor shaft 441 of the rotation motor 440 The horizontal movement bar 450 of the transmission / distribution line can be accurately positioned between the upper and lower layers of the inner shelf 200.

When the horizontal movement bar 450 is advanced, the horizontal movement bar 450 is rotated by rotating the rotation motor 440 so as not to catch the transmission / distribution line 20. In this case, when the horizontal movement bar 450 does not perform the horizontal movement operation, it is preferable that the horizontal movement bar 450 is always kept rotated horizontally.

The horizontal operating rod 431 of the horizontal hydraulic cylinder 430 advances toward the side shelf 100 of the wall so that the front end of the horizontal operating rod 431 is moved forward And the transmission / distribution line horizontal movement bar 450 coupled to the front end of the motor shaft 441 of the rotation motor 440 is advanced (refer to FIG. 7).

When the transmission / distribution line horizontal movement bar 450 approaches the transmission / distribution line 20 to be horizontally moved, the rotation motor 440 is operated to vertically rotate the transmission / distribution line horizontal movement bar 450, (See Fig. 8) so that the cable 450 can be hooked on the transmission / reception line 20.

The horizontal movement bar 450 of the transmission and distribution line pushes the transmission and distribution line 20 so that the transmission and distribution line 20 Is horizontally moved to a predetermined position on the wall side shelf 100 (see FIG. 9).

When the transmission and distribution line horizontal movement bar 450 is horizontally rotated while the transmission and distribution line horizontal movement bar 450 is rotated horizontally on the inside and outside of the transmission and distribution line 20, 10), the horizontal hydraulic cylinder 430 is retracted to be horizontally operated (refer to a solid line in FIG. 10) The rod 431 is retracted and the rotary motor 440 coupled to the front end of the horizontal operation rod 431 and the transmission and distribution line horizontal movement bar 450 coupled to the front end of the motor shaft 441 of the rotary motor 440 So that the transmission / reception line 20 can be placed on the inner shelf 200 (see the two-dot chain line display in Fig. 10).

By repeating this process, the plurality of power transmission / distribution lines 20 can be placed on the wall side shelf 100 and the inner side shelf 200.

<Fixing process of transmission and distribution lines>

The wire bundle 100 and the inner shelf 200 are fixed by the transmission and distribution wire fixing means 500 when the positioning of the transmission and distribution wires 20 to the wall side shelf 100 and the inner side shelf 200 is completed, .

That is, the bolts 540 are passed through the extended portions 520 while the transmission / distribution line fixing tool 510 is placed on the stationary transmission / distribution line 20, It is possible to attach and fix the stationary transmission and distribution line 20 fixed on the nut 530 on the wall side shelf 100 and the inner side shelf 200. [

In the illustrated example, the process of setting the transmission and distribution line 20 to the wall side shelf 100 and the inner side shelf 200 located on the left side of the underground tunnel 10 has been shown and described, When the transmission and distribution line 20 is fixedly attached to the wall side shelf 100 and the inner side shelf 200 located in the center of the underground tunnel 10 by rotating the transmission and distribution line horizontally moving means 400 in the opposite direction, And the like.

On the other hand, in the case where the transmission / distribution line 20 fixedly attached to the wall-side shelf 100 and the inner shelf 200 is removed and recovered, the operation is performed in the reverse order of the above-described operation to move the underground tunnel 10 To the bottom 13 of the frame.

The through hole 331 and the transmission and distribution line elevating means 300 can be installed at regular intervals in consideration of the length of the transmission and distribution line 20. The transmission and distribution line horizontal moving means 400 can move the transmission and distribution line 20, May be horizontally moved or installed one at a time and operated at the same time.

While the invention has been shown and described with reference to certain embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Underground tunnel 15: Central tunnel
20: Transmission and distribution line 100: Wall side shelf
200: inner shelf 300: transmission and distribution line lifting means
310: Device box 320: Elevating hydraulic cylinder
330: platform 331: through hole
340: Transmission and distribution line support roller 400: Transmission and distribution line horizontal movement means
410: Moving truck 420: Vertical hydraulic cylinder
430: horizontal hydraulic cylinder 440: rotary motor
450: Transmission line horizontal movement bar 500: Transmission and distribution line fixing means
510: Transmission and distribution line fastener 520: Extension part
530: buried nut 540: bolt

Claims (1)

An underground tunnel (10); A plurality of wall side shelves 100 and a plurality of inner side shelves 200 installed on both sides with respect to the central passage 15 of the underground tunnel 10;
A feeder / discharge line CP formed between the inner end of the wall side shelf 100 and the outer end of the inner side shelf 200 and through which the transmission / distribution line 20 passes;
A transmission / distribution line elevating means 300 provided at a lower portion of the transmission / distribution line ascending / descending passage CP to raise / lower the transmission / distribution line 20;
Side shelf 100 and the inner shelf 200 through the transmission and distribution line elevation passage CP by the transmission and distribution line elevating means 300 while moving along the central passage 15 of the bottom 13 of the underground tunnel 10, To horizontally move the transmission / distribution line (20), which has risen to a predetermined position on the wall side shelf (100) or the inner side shelf (200); And
A transmission / distribution line fixing means (500) for fixing the transmission / distribution line (20) to the upper surface of the wall side shelf (100) and the inner side shelf (200); And,
The transmission and distribution line elevating means 300 includes a device box 310 installed at a lower portion of the underground tunnel 10 and having both side walls 311 and 312 and a bottom 313, The elevating hydraulic cylinder 320 having a lower end fixed to the lower end of the elevating rod 321 and a lower end fixed to the lower end of the elevating rod 321 and fixed to the bottom 13 of the underground tunnel 10, A platform 33 coupled to an upper end of the platform 33 and being lifted and lowered through a through hole 331 formed in the bottom 13 of the underground tunnel 10 directly below the transmission and distribution line CP, And a transmission / distribution line support roller (340) rotatably installed on the support shaft
A roller having an arcuate groove along an outer circumferential surface thereof is used as the transmission / distribution line support roller 340,
The transmission and distribution line horizontally moving means 400 includes a traveling carriage 410 traveling along the central passage 15 and vertical traveling rods 421 vertically installed on the traveling carriage 410, A horizontal hydraulic cylinder 430 having a hydraulic cylinder 420 and a horizontal operation rod 431 coupled to the upper end of the lifting operation rod 421 and horizontally operated; And a transmission and distribution line horizontal movement bar 450 coupled to the front end of the motor shaft 441 for horizontally moving the transmission and distribution line 20, ,
The transmission / distribution line fixing means 500 includes a transmission / distribution line fixing hole 510 formed in an inverted U-shape so as to cover the transmission / distribution line 20, and an extension portion extending horizontally at both left and right ends of the transmission / And a bolt 540 inserted through the extension 520 and fastened to the buried nut 530. The bolts 540 are inserted into the bolts 540 through the bolts 540, And a transmission / reception connection structure having a detachable / attachable function of an electric wire.

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