KR101869257B1

KR101869257B1 - Cross arm for 154kV underground transmission line

Info

Publication number: KR101869257B1
Application number: KR1020170174507A
Authority: KR
Inventors: 박진현
Original assignee: 두양전기건설(주)
Priority date: 2017-12-18
Filing date: 2017-12-18
Publication date: 2018-06-21

Abstract

The present invention relates to a seamless cable of a 154 kV underground transmission line, which includes a front and rear guide rail installed on a ceiling of a power tunnel and a plurality of assemblies including a front and rear moving device, a left and right moving device, This makes it easy to work and shorten the working time by preventing the underground transmission line from being mounted in the power tunnel tunnel. Also, it prevents short circuit, short circuit, and fire from occurring due to leakage, To minimize electric accidents such as power outages and electric shock accidents and to prevent breakage such as warping or cutting of the shelf and to prevent the operator working on the left or right side passageway And if the operator wishes to continue the work in the opposite passage, it is necessary to provide a space for the operator to avoid, It is possible to eliminate the occurrence of safety accidents due to contact with the underground wires and to avoid a shelf and underground transmission line which the operator can move without exiting the concrete structure and a passage is formed on the opposite side, So that the operation can be simplified and the working time can be shortened.

Description

{Cross arm for 154kV underground transmission line}

The present invention relates to the field of transmission technology of 154kV underground transmission line, more specifically, it is possible to place an underground transmission line in a power tunnel without using a separate inserting device, Shortage, leakage, and fire are prevented from occurring due to leakage of water. The underground cable is not wetted by water, so that it does not inconvenience to work. Electric shocks such as power outage and electric shock accident are minimized and the shelf is bent or cut It is possible to prevent the breakage of the worker and the worker who is working in the passage formed on the left side or the right side to form the passage on the opposite side and to continue the work in the opposite passage, It is possible to exclude the occurrence of a safety accident that is injured by contact with a shelf or an underground wire, and The 154kV underground transmission line is designed to simplify the operation and shorten the working time because the worker can avoid the moving shelf and underground transmission line without exiting the concrete structure and the passage on the opposite side can be safely moved to the opposite passage. .

Generally, in transmission of 154 kV class high voltage power, a working transmission line which supports the machined transmission line in an insulated state through a suspending insulator is widely used.

These processing transmission lines have advantages such as low construction cost, high unit transmission capacity and constant current, but it is difficult to promote construction due to low reliability of supply, difficulty in securing civilization and location, There is a drawback.

On the other hand, the underground transmission line has the advantages of high stability, high reliability of supply, harmonization with urban environment, high construction cost, long construction air, low unit transmission capacity, .

Nevertheless, the reason for the increase in underground transmission lines is that there is an advantage of high stability, reliability of supply and harmony with urban environment.

Conventional underground transmission line uses insulation coated wire covered with special insulation material. It is a direct type that buries the underground transmission line directly in the ground, a channel type in which the underground transmission line is inserted in the synthetic resin spiral pipe buried in the ground, And the power transmission line is mounted on the ground.

The direct-coupled and ducted underground transmission lines are used to build mid- and small-scale underground transmission lines, and electric-powered (underground or co-ordinated) underground transmission lines are used to construct large-scale underground transmission lines.

8, a multi-stage shelf 2 is installed on the inner walls of both sides of a power tunnel 1 buried in the ground, and a plurality of underground There is a method in which the transmission line 3 is mounted.

Such a conventional electric underground transmission line is provided with a passage 4 through which a worker and equipment can pass at the center of a power tunnel 1 to perform a pulling cable operation of a cable for the first underground transmission line, 2) is capable of inspecting and managing the underground transmission line (3) by mounting the underground transmission line (3) or mounting the ground transmission line (3).

However, since a plurality of (three in the drawings) 154 kV class underground power transmission lines 3 for high pressure are mounted on the shelf 2, it is easy to inspect and manage those located on the passage 4 side of the underground transmission line 3 However, it is difficult to inspect and manage those located on the wall side of the electric power tunnel 1.

As a prior art for solving such a problem, Korean Patent Registration No. 10-0901876 (registered on Jun. 5, 2009) (hereinafter referred to as "Prior Art 1") is installed in a concrete structure, When the worker is required to work on the left side of the shelf, the worker can safely move the shelf to the right by moving the shelf to the right and moving the shelf to the left when the worker has to work on the right side of the shelf And a shelf is installed at a distance from the wall of the concrete structure to prevent water flowing along the wall from flowing into the shelf, thereby preventing flooding of the underground cable.

In the prior art 1, when the worker is working on the left side of the shelf, the shelf is moved to the right so that a passage is formed between the left side wall of the concrete structure and the left side of the shelf. When the worker works on the right side of the shelf The worker who is working in the left or right passage formed by moving the shelf to the right or left side is required to continue the work on the opposite side of the shelf by moving the shelf to the left side so that a passage is formed between the right side wall of the concrete structure and the right side of the shelf. In this case, since the left and right sides of the concrete structure are obstructed by the shelves and the underground wires, there is no space where the worker can avoid the shelves and the underground wires, It comes in contact with the shelf and the underground wire, Etc. There is a danger of accidents occurring.

Therefore, if a worker working in a passage formed on the left or right side of the shelf forms a passage on the opposite side and wants to continue the work in the opposite passage, the worker moves out of the tube-shaped concrete structure, There is a problem that the work is very troublesome and the work is delayed because a passage is formed and then the concrete structure is moved back to the opposite passage.

A prior art related to this is disclosed in Korean Patent Registration No. 10-00881352 (Registered on Mar. 23, 2009) "Panel for forming distribution line of special high voltage underground wire" (hereinafter referred to as "Prior Art 2")).

In the prior art 2, there are described a "guide member " which is inserted in a concrete structure and is disposed on an upper portion of the concrete structure, a guide member having a guide rail, A lower connecting portion movably engaged and fixed to the guide rail of the guide member, a shelf having a supporting plate disposed between the upper connecting portion and the lower connecting portion and supporting the power distribution line, A first solenoid provided with a first plunger and fixed to the left end of the guide rail to keep the shelf rotated by a predetermined angle and a second plunger functioning as a stopper and fixed to the right end of the guide rail, A second solenoid for maintaining a state rotated by a predetermined angle, A control unit for controlling the operation of the first solenoid and the second solenoid by receiving a control signal from the first input unit and the second solenoid and outputting an operation signal of the first solenoid to the control unit, A second input unit installed on the inner wall surface of the left side of the concrete structure for outputting an operation signal of the second solenoid to the control unit and a second input unit provided on the left inner wall surface of the concrete structure for outputting an operation signal of the first solenoid to the control unit And a fourth input unit provided on the inner wall surface of the right side of the concrete structure for outputting an operation signal of the second solenoid to the control unit so that even if water leakage occurs in the concrete structure, The effect of optimizing the size of the concrete structure while reducing the shortening is expected. "

However, although the prior art 2 may reduce the service life of the distribution line as in the prior art 1, there is a risk of occurrence of a safety accident such as contact with the shelf and the underground wire in the process of changing the passage, The worker who is working in the passage formed on the left or right side moves the shelf to form a passage on the opposite side and wants to continue the operation in the opposite passage The worker must exit the concrete structure formed in a tubular shape, turn the shelf to form a passage on the opposite side, and then enter the concrete structure again to move to the opposite passage, so that the operation is very troublesome and the work delay is not solved.

In order to mount a plurality of underground transmission lines in the power tunnel according to the prior arts 1 and 2, a guide rail including a rack, a guide rail main body, and a slider and a bracket, A conveying device including a fastening table, a pinion, a fixing table, and a driving motor is to be installed, a plurality of shelves are fixed to a fixing table, and the underground wires are to be mounted on each shelf by a pulling cable operation.

Such a pulling operation includes a first step of placing one or more ground wires in a concrete structure by pulling cables and a second step of placing the cable for underground cables on a shelf.

In the first step, a support bar is installed at a predetermined height on the bottom of the concrete structure with a pulling roller rotatably installed on the top of the concrete structure at a predetermined height, and a cable drum (Cable Drum) A pulling device is installed at the other end of the concrete structure, a pulling eye is coupled to the end of the cable wound on the cable drum, a pulling wire is connected to the pulling eye, The pulling wire is pulled to pull the cable connected to the pulling wire, and the second step is pulled in the first step to lift the cable supported on the support and mount it on the shelf.

As described above, in the prior arts 1 and 2, a wire harnessing device including a support and a winding device must be installed in order to place the underground wire on the shelf, and the first step, which is the pulling step and the second step, There is a problem that the installation work of the underground cable is troublesome and the time is delayed.

This allows workers to work safely and prevents water flowing along the wall from flowing into the shelf, thus preventing flooding of underground wires. In addition, It is required to develop a technique for simplifying the operation and shortening the working time by omitting the lifting step.

Korea Registered Patent No. 10-0901876 (Registered on Jun. 5, 2009) "Underground Cable Protector" Korean Patent Registration No. 10-00881352 (Registered on Mar. 23, 2009), "Panel formed with distribution line of special high-voltage underground wire"

Therefore, the object of the present invention is to provide a method and apparatus for preventing the occurrence of short circuit, short circuit, and fire due to leak, by allowing the underground transmission line to be mounted in a power tunnel tunnel without using any additional wire harness equipment, And it is possible to prevent electric shocks such as power outages and electric shock accidents and to prevent breakage such as warping or cutting of the shelf, When a worker who works in a passage forms a passage on the opposite side and wants to continue the work in the opposite passage, it is necessary to provide a space that the worker can avoid to prevent a safety accident that an operator is injured by contact with a shelf or underground wire It is also possible to exclude the occurrence of the concrete structure, Avoid power lines, and will want a channel formed on the other end can safely move to the opposite side of the passage work is simple and provides a 154kV to underground transmission lines wancheol to shorten working hours.

According to an aspect of the present invention, there is provided a power tunnel including: a power tunnel installed in a tunnel having one end or both ends opened in the ground; A front and rear guide rails fixed to the ceiling of the electric power tunnel in a longitudinal direction; A back-and-forth moving device supported on the front and rear guide rails so as to be movable back and forth; A left and right moving device supported by the front and rear moving device movably in the left and right direction; A lifting device supported by the left and right moving device so as to be able to move up and down; And a control unit for controlling the left and right moving devices and the lift device. The front and rear guide rails include a top fixing part fixed to a ceiling of a power slot tunnel, a vertical fixing part extending downward from the middle part of the top fixing part, And a lower end guide portion horizontally extending left and right at a lower end of the vertical portion, wherein the back and forth moving device includes a pair of vertical portions disposed on both left and right sides of a lower end apical portion of the front and rear guide rails, A front and rear driving supporter having a horizontal portion extending to the left and right sides of the front and rear driving motors and connecting the front and rear driving supporters to each other, A back and forth moving roller that rolls on an upper surface of the lower guide portion, and a back and forth moving table coupled to a lower portion of the back and forth moving table, The left and right moving device includes left and right driving motors mounted on the upper and lower movable tables, left and right driving screws coupled to motor shafts of the left and right driving motors, bearings for supporting the free ends of the left and right driving screws to the front and rear movable tables, A nut block having a screw hole engaged with a male screw portion of the left and right driving screws; a pair of front and rear vertical connecting pieces disposed at front and rear ends of the lower surface of the nut block at intervals corresponding to the front- A connecting member having a horizontal connecting piece integrally formed at a lower end of the connecting piece, a left and right moving base to which an upper surface is coupled to a lower surface of the horizontal connecting piece, an inner hole formed on the horizontal connecting piece, And a left and right movement guide rods passing through the inside of the left and right moving rods and guiding the left and right movable rods to the left and right, The lift device includes a pair of right and left racks fixed to an upper middle portion of both side surfaces of the left and right movable racks and having gears formed on an inner surface thereof, a lower support rack connecting the lower ends of the left and right racks, A pinion which is coupled to a motor shaft of the elevation driving motor and is engaged with the rack, and a pinion which is engaged with the motor shaft of the elevation driving motor, And a plurality of lifting and lowering guide rods fixed to upper ends of the lifting and lowering guide rods and extending downward to guide the upper and lower rails in an ascendable and descendable manner. The raising and lowering driving motor is a braking device that releases braking when power is applied, And the four corners of the top surface of the wrought iron panel of the wrought iron are used to raise and lower the worn iron by means of the raising and lowering driving means And an upper limit upper limit stopper for preventing an underground transmission line supporting the iron from colliding with a lower surface of the upper wing iron or the left and right movable bands, wherein the control means controls the front and rear switches, the left and right switches, And a lift limiter for stopping the elevating operation when the ground transmission line, which is provided on the bottom surface of the barrel except for the bottom surface of the left and right moving table and the bottom tray, is close to the bottom surface of the upper table barrel or the left and right moving table, And a controller for controlling the left and right driving motors and the elevation driving motor in accordance with the operation of the front and rear switches, the right and left switches, the elevation switch, and the operation of the elevation limit switch. to provide.

According to the 154kV underground transmission line cable of the present invention, since the front and rear guide rails provided on the ceiling of the electric power tunnel, and the plurality of assemblies including the front and rear moving devices, the left and right moving devices and the lift devices, It is easy to work and shorten the working time by allowing the underground power transmission line to be mounted in the power tunnel tunnel without preventing short circuit, short circuit, and fire from occurring due to leakage. In addition, it is possible to minimize electric accidents such as power outages and electric shock accidents, prevent breakage such as warping or cutting of the shelf, and work in the passageway formed on the left or right side to form a passage on the opposite side If the worker wishes to continue the work in the opposite passage, it is possible to provide a space for the worker to avoid, It is possible to eliminate the occurrence of safety accidents caused by contact with the electric wire and to avoid a shelf and underground transmission line which the operator can move without exiting the concrete structure and a passage is formed on the opposite side, It can be moved easily, and the working time can be shortened.

1 to 7 show a preferred embodiment of a 154kV underground transmission line according to the present invention,
Fig. 1 is an exploded perspective view of a heavy wire of a 154 kV underground transmission line,
Fig. 2 is a partial cutaway front view showing a normal state,
3 is a functional block diagram of the control means,
4 is a partial cutaway front view showing a state in which a passage is formed on the left side,
5 is a partially cut front view showing a state in which a passage is formed on the right side,
6 is a partial cutaway front view showing a state in which a bare iron is raised in a state where a passageway is formed on the left side,
7 is a partial cutaway front view showing a state in which a bare iron is raised in a state where a passage is formed on the right side,
8 is a front view schematically showing a conventional underground transmission line.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

Figs. 1 to 7 show preferred embodiments of the 154kV underground transmission line according to the present invention.

In the following description, bolts and nuts, bolt through holes and bolt fastening holes for coupling between components are shown in the drawing, but the reference numerals and explanations are omitted.

As shown in FIG. 1 to FIG. 7, the heavy rail of the 154 kV underground transmission line according to the present embodiment includes a power tunnel 100; A front and rear guide rails (200) fixedly installed on the ceiling of the power tunnel (100) in a longitudinal direction; A back-and-forth moving device 300 supported by the front and rear guide rails 200 so as to be movable back and forth; A left and right moving device 400 that is supported movably in the left and right direction by the back and forth moving device 300; A lifting device 500 supported by the left and right moving device 400 so as to be able to move up and down; And control means (600) for controlling the left and right movement device (400) and the elevation device (500).

The power tunnel 100 is a concrete structure installed in the ground and is formed in a tunnel shape having one end or both ends opened, and a manhole is installed at one end or both ends of the tunnel.

The front and rear guide rails 200 include an upper fixing part 210 fixed to the ceiling of the power tunnel 100, a vertical part 220 extending downward from the middle part of the upper fixing part 210, And a lower guide part 230 horizontally extending horizontally at the lower end of the part 220.

The front and rear guide rails 200 may be H-shaped.

The front and rear guide rails 200 penetrate a plurality of anchor bolts B1 projected downward from the ceiling of the electric power tunnel 100 to the upper end fixing part 210 and fasten the nuts N1, And can be fixedly installed on the ceiling of the old tunnel 100.

The back and forth moving device 300 includes a pair of vertical portions 311 disposed on both left and right sides of the lower guide portion 230 of the front and rear guide rails 200 and a lower end of the pair of vertical portions 311 And a motor shaft 321 mounted on a vertical portion 311 of the front and rear support frame 310 and having a vertical portion 311. The vertical portion 311 has a horizontal portion 312 extending to left and right sides, A front and rear moving roller 330 coupled to the motor shaft 321 of the front and rear driving motor 320 and rolling on an upper surface of the lower guide portion 230, And a back-and-forth moving base (340) coupled to a lower portion of the movement support (310).

The front and rear driving motors 320 can be mounted on the front and rear support platforms 310 by fastening bolts B2 to the flanges 322 and bolts formed on the vertical portions 311.

The motor shaft 321 and the front and rear moving roller 330 are coupled to rotate integrally by a common key (not shown), and a nut (not shown) is attached to the screw portion B3 formed at the tip of the motor shaft 321 N3) can be fastened so as not to depart from each other.

In order to increase the frictional force between the front and rear moving rollers 330 and the upper surface of the lower guide part 230 of the front and rear guide rails 200, it is preferable to coat the outer circumferential surface with a material having a high coefficient of friction such as rubber .

The front and rear movable table 340 is integrally movable by fastening a bolt B4 passing through the horizontal part 312 of the front and rear movable table 310 to bolt fastening holes formed in the front and rear moving table 340 Can be combined.

The left and right moving device 400 includes a left and right driving motor 410 mounted on an upper surface of the front and rear moving table 340 and a left and a right driving screw 420 coupled to a motor shaft (not shown) A bearing 430 for supporting the free end of the left and right drive screw 420 to the front and rear movable base 340 and a screw hole 441 for engaging with the male screw portion 421 of the left and right drive screw 420, A pair of front and rear vertical connecting pieces 451 disposed at front and rear ends of the lower surface of the nut block 440 at intervals corresponding to the front and rear width of the front and rear moving table 340, And a horizontal connecting piece 452 integrally formed at a lower end of the vertical connecting piece 451. The horizontal connecting piece 452 has a horizontal moving piece 460 having an upper surface coupled to the lower surface of the horizontal connecting piece 452, Both ends of the inner hole 470 and the front and rear movable base 340 are supported by the connecting piece 452, Ui-dong through the guide hole 470 is configured to include the left and right movement guide rod 480 for guiding the left and right lateral moving table 460.

The left and right driving motors 410 are mounted on the upper surface of the front and rear moving table 340 using bolts. The left and right driving screws 420 are mounted on the left and right driving motors 410, And a shaft coupler or a key can be coupled to the shaft by a conventional shaft coupler or a key. The bearing 430 accommodates a radial bearing in a conventional bearing box, and a detailed illustration and description thereof will be omitted.

The nut block 440 may have a screw hole formed therein, or a part having a screw hole formed therein may be used.

The vertical connecting piece 451 of the connector 450 is fastened to the lower surface of the nut block 440 by fastening the fixing bolt B5 passing through the nut block 440 to the bolt fastening hole formed in the vertical connecting piece 451. [ Can be fixed.

The left and right moving table 460 is fixed to the left and right moving table 460 by fastening the connecting bolt B6 passing through the horizontal connecting piece 452 of the connecting hole 450 to the bolt fastening hole formed in the left and right moving table 460, To the nut block 440.

The left and right movement guide rods 480 can be fixedly supported on the front and rear movable base 340 by supporting pieces 481 coupled to both ends of the front and rear movable base 340.

The elevating device 500 includes a pair of right and left racks 510 having upper ends fixed to the middle portions of both side surfaces of the left and right moving table 460 and gear portions 511 formed on the inner surface thereof, A bottom support 520 connecting the lower ends of the upper and lower supports 530 and 510 and a plurality of layers of bridges 530 vertically installed between the left and right movement bases 460 and the lower support 520, A pinion 550 coupled to the motor shaft 541 of the elevation driving motor 540 to engage with the rack 510 and a pinion 550 coupled to the left and right moving table 460, And a plurality of lifting and guiding rods 560 extending downward to fix the upper rail to the four corners of the upper and lower rails 530 to guide the upper rail 530 in an ascending and descending direction.

A fixing piece 512 is extended from the upper end of the rack 510 to fix the upper end of the rack 510 to the middle parts of both side surfaces of the left and right moving table 460, The upper end of the rack 510 is inserted into the insertion groove 513 and the fixing piece 512 is brought into close contact with the both side surfaces of the left and right movable table 460 by inserting the upper end of the rack 510 into the insertion groove 513 The fixing bolt B7 passing through the fixing piece 512 can be fastened to the bolt fastening hole formed in the left and right moving table 460. [

A fixing bolt B8 passing through the lower end of the rack 510 may be fastened to bolt fastening holes formed at both ends of the lower support stand 520 to connect the lower end of the rack 510 to the lower support stand 520. [

The wrought iron 530 includes a wrought iron frame 531 formed in a square shape by a channel such as a channel or a square pipe and a wrought iron panel 532 attached to the upper face of the wrought iron frame 531.

On the upper surface of the heavy wire panel 532, a guide protrusion 533 for guiding the positions of a plurality of underground transmission lines C is provided.

It is preferable that the bumpy panel 532 and the guide protrusion 533 are made of an iron plate and the surface is coated with an electrically insulating material.

It is preferable that the elevation driving motor 540 uses a motor provided with a brake for braking when power is applied and for braking when the power is off.

The elevating / lowering driving motor 540 is mounted on the upper surface of the bare iron 530 using bolts. Since the elevating / lowering driving motor 540 can be realized by a conventional motor mounting method, a detailed description thereof will be omitted.

Since the pinion 550 is coupled to the motor shaft of the elevation driving motor 540 and can be coupled by a conventional shaft coupler or a key, a detailed description thereof will be omitted.

A male screw portion 561 is formed on the upper outer circumferential surface of the lifting guide rod 560 to fix the upper end of the lifting guide rod 560 to the left and right movable base 460, And the engaging nut N9 can be fastened to the male screw portion 561 on the upper and lower sides of the left and right movable table 460. [

The elevating guide rods 560 penetrate through the wrought iron frame 531 constituting the wrought iron 530 and the elevating guide holes 564 and 565 formed in the shelf panel 532 to allow the plurality of wrought iron rods 530 to be raised and lowered .

A male screw portion 566 is formed at the lower end of the lifting guide rod 560 and a release preventing nut N10 is fastened to prevent the wedge 530 from being detached from the male screw portion 566.

The underground transmission line C supported with the brass wire 530 when the brass wire 530 is moved up and down by the elevating device 500 is installed on the upper four corners of the brass panel 532 of the brass wire 530, And a lifting upper limit stopper 570 for preventing the lower surface of the left and right movable table 460 from colliding with the lower surface of the left and right movable table 460.

The elevating upper limit stopper 570 may be provided at an arbitrary position on the upper surface of the wicket panel 532. However, the elevating upper limit stopper 570 may be formed into a cylindrical shape as shown in the drawing, and may be installed coaxially with the elevating guide holes 564 and 565, (560).

The control means 600 controls the front and rear switches 610, 620 and 630 installed at the entrance of the power tunnel 100 and the inner wall of both sides of the power tunnel 100, the front and rear switches 610 and 610, And a control unit 650 for controlling the left and right driving motors 410 and the elevation driving motors 540 according to the operation of the elevation switch 620 and the elevation switch 630.

It is preferable that the front and rear switches 610, the left and right switches 620 and the elevation switch 630 are embedded in both inner wall surfaces of the power slot tunnel 10 so that only the operation knob (not shown) The front and rear switches 610, the left and right switches 620 and the elevation switch 630 provided on the inner wall surfaces of the power tunnel 100 are connected in parallel to each other so that the same control is performed regardless of which of the switches is operated.

The front and rear switch 610, the left and right switches 620 and the elevation switch 630 are installed at a predetermined interval from the entrance of the power tunnel 100. When the first operator enters the power tunnel 100, The switch 610, the left and right switches 620 and the elevation switch 630 installed on the side of the entrance to exit from the power tunnel 100 after the work is finished, and the operator can operate the power tunnel 100 It is preferable to be able to operate the front-rear switch 610, the left-right switch 620 and the elevation switch 630 at any position.

The control unit 650 is preferably installed in a control box (not shown) installed at the entrance of the power tunnel 100.

Also, for the safety of the operator, the front and rear switch 610, the left and right switch 620 and the up / down switch 630 may be replaced with a remote control receiver so that the operator can operate the remote control transmitter in a safe position while carrying the remote control transmitter .

The control means 600 is installed on the lower surface of the bare iron 530 except for the bottom surface of the left and right movable table 460 and the bottom surface of the bottom rail and the underground power transmission line C supported by the bare iron 530, And a lift limit switch 640 for stopping the elevating operation when it is close to the lower surface of the left and right movable table 530 or the left and right movable table 460.

The control unit 650 controls the elevation driving motors 530 provided on the wrought iron 530 of each layer to control the elevating and lowering motions of the second layer The ascending / descending distance of the wrought iron can be controlled to be 2D, the ascending / descending distance of the third layer can be controlled to be 3D, and the ascending / descending distance of the fourth layer can be controlled to be 4D).

The front and rear guide rails 200, the left and right movable tables 460 and the wrought iron 530 have a longitudinal length of about 1 to 5 meters, for example.

The power required for the front and rear driving motors 320, the left and right driving motors 410, the elevation driving motors 540 and the control unit 650 may be determined by using a commercial current separately installed in the power tunnel 100, A battery (not shown) can be charged by using a current generated in a photovoltaic device (not shown) installed outside the tunnel 100.

Hereinafter, the operation of the coarse iron of the 154 kV underground transmission line according to the present embodiment will be described.

[First Installation Process]

A plurality of front and rear guide rails 200 are continuously installed on the ceiling of the electric power tunnel 100 and the front and rear moving apparatus 300, the left and right moving apparatus 400 and the elevating apparatus 500 Assemble all.

Since the left and right movable table 460 and the wrought iron 530 are configured to have a length of about 1 to 5 meters, for example, the assemblies of the back and forth moving apparatus 300, the left and right moving apparatus 400 and the elevating apparatus 500 Assembly ') can be prepared from 20 to 100, assuming that the length of the power tunnel 100 is 100 meters.

The left and right driving motors 410, the elevation driving motors 540 and the control unit 650 are connected to a power supply line C via a power transmission line C, Lt; / RTI >

The front and rear moving rollers 330 of the one-time assembly moving device 300 are placed on the bottom guide portions 230 of the front and rear guide rails 200 and the front and rear drive motors 320 are operated by the operation of the front and rear switches 610, The front and rear moving rollers 330 that are in rolling contact with the lower guide portions 230 of the front and rear guide rails 200 are rotated so that the assembly No. 1 and the underground power transmission line C are rotated by the electric power tunnel, (100).

When the assembly 1 is fully inserted into the power tunnel 100, the assembly 2 enters the power tunnel 100 in the same manner as the assembly 1 and enters the power tunnel 100 to the final assembly in this manner This completes the installation.

Therefore, it is possible to mount the underground transmission line (C) to the power tunnel 100 itself without using any separate wire harness equipment, thereby shortening the working time required for the installation of the underground transmission line to the power tunnel 100 .

In addition, since the front-rear drive motor 320 uses a motor having a brake that is braked when the power is turned off when the power is turned off, the braking is released when the power is applied, After the completion of the power supply, when the power is turned off, the braking is applied, and the front and rear moving device 300 is fixedly supported on the front and rear guide rails 200.

[normally]

2, a gap between both sides of the solid iron 530 and the inner wall surface of the electric power tunnel 100 is formed so that water leakage occurs in the electric power tunnel 100 and flows down along the inner wall surface (C) is not wetted by water, so that short-circuit, short-circuit and fire are prevented from occurring due to leakage of water, and the underground transmission line (C) Electric accidents such as accidents can be minimized.

Compared with the conventional underground transmission line, it prevents the short circuit, short circuit, and fire generation according to the leakage in the conventional case, minimizes electric accidents such as power outage and electric shock accident because it does not inconvenience work because the underground transmission line is not wetted with water In addition, when installing the bar coils from the wall, in order to work on both sides of the bar coils, passageways should be formed on both sides of the bar coils to allow the operators to work while moving. Therefore, there is a problem that the width of the power tunnel 100 needs to be widened.

On the other hand, according to the 154kV underground transmission line according to the present invention, the bridge 530 and the underground transmission line C are spaced apart from the inner wall surface of the power tunnel 100 in the normal state, And the underground cable is not wetted by water, so that it does not inconvenience to work, and electric accidents such as power outage and electric shock accident can be minimized.

As will be described later, since a passageway is formed on the left side or the right side during work, the work can be performed on both sides of the wire 530 and the underground transmission line C, so that the width of the power slot tunnel 100 can be narrowed .

Accordingly, it is possible to reduce the amount of concrete required to construct the electric power tunnel 100, thereby contributing to reduction of carbon emissions and environmental pollution.

[Moving left / right]

When the operator operates the left and right switches 620 provided at regular intervals on the entrance of the electric power tunnel 100 or on the inner wall surface of the electric power tunnel 100 to the left, the controller 650 controls the left and right drive motors 410 So that the left and right drive motors 410 rotate in the clockwise direction.

The left and right drive screws 420 coupled to the motor shaft of the left and right drive motors 410 rotate in the clockwise direction in accordance with the clockwise rotation of the left and right drive motors 410, The left and right movable belts 460 move to the right and the left and right movable belts 460 coupled to the nut block 440 through the connecting pieces 450 having the vertical connecting pieces 451 and the horizontal connecting pieces 452 move to the right .

At this time, since the left and right movable table 460 is supported at its lower ends by the lower surface of the front and rear movable table 340 and is supported by the left and right guide rods 480 passing through the inner hole 470 during the left and right movements, The block 440 and the left and right movable table 460 are moved to a stable state.

A plurality of shelves 300 are disposed below the left and right movable table 460. Each of the wrought iron coils 530 includes a lifting guide rod 560 fixed to the left and right movable table 460, A rack 510 which is supported by the elevating guide holes 564 and 565 so as to be able to move up and down as well as the upper end of which is fixed to the left and right moving table 460 and the elevation driving motor 540 mounted on each wrought iron 530 The elevation guide rod 560, the rack 510 and the pinion 550, the elevation driving motor 540 and the wrought iron 530 are moved to the right side (left side in FIG. .

Accordingly, as shown in FIG. 4, the passage P is formed on the left side of the power tunnel 100, and the operator can perform the operation while moving through the passage P formed on the left side.

On the other hand, when the operator operates the left and right switches 620 provided at regular intervals on the entrance of the power tunnel 10 or on the inner wall surface of the power tunnel 100 to the right, the leftward movement operation in the opposite direction to the above- As shown in Fig. 5, a passage P is formed on the right side of the power tunnel 100. As shown in Fig.

[Lift operation]

When the operator operates the elevation switch 630 upward at the entrance of the electric power tunnel 100 or at the inner wall of the electric power tunnel 100 at an interval, the controller 650 controls the elevation driving motor 540 So that the elevation driving motor 540 rotates in the counterclockwise direction.

The pinion 550 coupled to the motor shaft of the elevation drive motor 540 rotates in the counterclockwise direction in accordance with the counterclockwise rotation of the elevation drive motor 540, The operation of the fixed rack 510 and the pinion 550 causes the pinion 540, the elevation driving motor 540 and the wrought iron 530 on which the elevation driving motor 540 is mounted to ascend.

At this time, since the elevation guide holes 564 and 565 formed at the four corners of the wrought iron 530 are guided by the elevation guide rods 560 fixed to the left and right movable rods 460, The rising operation is performed in a stable state.

The control unit 650 controls the lift motors 540 installed on the wrought iron 530 of each layer to control the moving speed of the uppermost wand iron 530 among the multiple wandering coils 530 to D, The elevation distance of the wagon is 2D, the elevation distance of the wagon of the third floor is 3D, and the elevation distance of the wagon of the fourth floor is 4D). As shown in Figs. 6 and 7, (530) are brought into close contact with each other.

Therefore, a space S that can be avoided by the operator is formed between the bottom floors 530 and the bottom of the power tunnel 100.

The ground wire 530 is supported by the upper rail 530 or the lower surface of the upper rail 530 or the left and right movable table 460, There is no conflict.

Since the grounding limit switch 640 is provided on the bottom surface of the wrought iron 530 except for the lower surface of the left and right movable table 460 and the lowest layer, the underground transmission line C supported by the wrought iron 530 is connected to the upper wrought iron 530, The control unit 650 can stop the elevation driving motor 540 when it is close to the lower surface of the moving table 460 so that it can be used more safely.

Here, when the length of the brass bars 530 is 2 meters, the gap between the left and right movement guide rods 480 and the rack 510 is about 1 meter, so that there is a sufficient space for the operator to avoid or move between them .

Conversely, when the operator operates the elevation switch 630 downward at the entrance of the power tunnel 100 or the inner wall surface of the power tunnel 100 at a predetermined interval, the downward movement is performed as opposed to the above- As shown in Fig. 5, the gap between the solid bars 530 is maintained at a regular interval.

[Worker's first entry]

When the operator first tries to enter the power tunnel 100 in the normal state as shown in Fig. 2, if the left and right switches 620 installed at the entrance of the power tunnel 100 are operated to the left or right, Since the passage P is formed on the left or right side of the power tunnel 100 as shown in FIG. 1, the operator can perform the operation while moving through the passage P.

[Operation for forming a passage during operation on the opposite side]

4 and 5, the worker who is working in the passage P formed on the left or right side of the power tunnel 100 forms the passage P on the opposite side and performs the operation in the passage P When the elevator switch 630 installed at a certain interval on the inner wall surface of the power tunnel 100 is operated upward, the wagon 530 rises by the above-mentioned elevating operation, And a space S that can be used by the operator is formed between the bottom of the power tunnel 100 and the floor of the power tunnel 100 (see Figs. 6 and 7).

In this state, when the operator operates the left and right switches 620 provided at regular intervals on the inner wall surface of the power tunnel 100 to the left or right, as described above, the coarse iron 530 is moved to the right or left The worker is avoided from the space S formed between the bottom half 530 of the bottom layer and the bottom of the power tunnel 100 so that the operator touches the bottom half 530 moving left and right and the underground transmission line C It is possible to reliably prevent the worker from being injured in the process of forming the passage P on the opposite side of the work.

When a pass P is formed on the opposite side of the passageway P formed on the left or right side and the operation is continued, the space S between the bottom floors 530 and the bottom of the power slot tunnel 100 The worker can safely continue the work while safely changing the passage without exiting the power tunnel 100 and re-entering the tunnel 100. Thus, the work time can be shortened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. Such modified embodiments should not be individually understood from the technical idea or viewpoint of the present invention, but should be included in the claims attached hereto.

100: Power tunnel Tunnel 200: Front and rear guide rails
210: upper fixing part 220: vertical part
230: lower guiding part 300: back and forth moving device
310: forward / backward movement support 320: forward / backward drive motor
330: front and rear moving roller 340:
400: left and right moving device 410: left and right driving motor
420: left and right drive screw 430:
440: Nut block 450: Connector
460: left and right moving band 470: left and right while inside
480: left and right guide rod 500: lifting device
510: Rack 520: Lower support
530: Wandering iron 540: Lift motor
550: pinion 560: lifting guide rod
600: Control means 610: Front /
620: left and right switch 630: lift switch
640: control unit 640: lift limit switch

Claims

A power tunnel (100) installed in the ground in the form of a tunnel having one end or both ends opened; A front and rear guide rails (200) fixedly installed on the ceiling of the power tunnel (100) in a longitudinal direction; A back-and-forth moving device 300 supported by the front and rear guide rails 200 so as to be movable back and forth; A left and right moving device 400 that is supported movably in the left and right direction by the back and forth moving device 300; A lifting device 500 supported by the left and right moving device 400 so as to be able to move up and down; And control means (600) for controlling the left and right movement device (400) and the elevation device (500)
The front and rear guide rails 200 include an upper fixing part 210 fixed to the ceiling of the power tunnel 100, a vertical part 220 extending downward from the middle part of the upper fixing part 210, And a lower guide part 230 horizontally extending horizontally at a lower end of the part 220,
The front and rear guide rails 200 are formed of H-shaped steel and penetrate a plurality of anchor bolts B1 protruded downward from the ceiling of the electric power tunnel 100 to the upper end fixing part 210 and a nut N1 And fixed to the ceiling of the electric power tunnel 100,
The back and forth moving device 300 includes a pair of vertical portions 311 disposed on both left and right sides of a lower end portion 230 of the front and rear guide rails 200 and a lower end of the pair of vertical portions 311 And a motor shaft 321 mounted on a vertical portion 311 of the front and rear support frame 310 and having a vertical portion 311. The vertical portion 311 has a horizontal portion 312 extending to left and right sides, A front and rear moving roller 330 coupled to the motor shaft 321 of the front and rear driving motor 320 and rolling on an upper surface of the lower guide portion 230, And a back-and-forth moving base (340) coupled to a lower portion of the movement support (310)
The front and rear moving rollers 330 are coated on the outer circumferential surface with a material having a high frictional coefficient such as rubber in order to increase the frictional force between the front and rear moving rollers 330 and the upper surface of the lower guide portion 230 of the front and rear guide rails 200,
The left and right moving device 400 includes a left and right driving motor 410 mounted on the front and rear moving table 340, left and right driving screws 420 coupled to the motor shaft of the left and right driving motor 410, A bearing 430 for supporting the free end of the left and right drive screw 420 to the front and rear moving table 340 and a screw hole 441 for engaging with the male screw portion 421 of the left and right drive screw 420 A pair of front and rear vertical connecting pieces 451 disposed at front and rear ends of the lower surface of the nut block 440 at intervals corresponding to the front and rear width of the front and rear moving table 340, A horizontal connecting piece 452 having a horizontal connecting piece 452 integrally formed at a lower end of the horizontal connecting piece 451, a left and right moving table 460 having an upper surface coupled to a lower surface of the horizontal connecting piece 452, Both ends of which are supported on the lower surface of the front and rear movable base 340 and the left and right sides of the front and rear movable base 340, By passing through the inner hole 470 includes a left and right movement guide rod 480 for horizontally guiding the right and left moving table 460,
The elevating device 500 includes a pair of right and left racks 510 having upper ends fixed to the middle portions of both side surfaces of the left and right moving table 460 and gear portions 511 formed on the inner surface thereof, A bottom support 520 connecting the lower ends of the upper and lower supports 530 and 510 and a plurality of layers of bridges 530 vertically installed between the left and right movement bases 460 and the lower support 520, A pinion 550 coupled to the motor shaft 541 of the elevation driving motor 540 to engage with the rack 510 and a pinion 550 coupled to the left and right moving table 460, And a plurality of lifting and guiding rods 560 fixed to the four corners of the bottom wall 530 and extending downward to guide the bottom rail 530 in an ascending and descending direction,
The elevation driving motor 540 uses a motor provided with a brake for releasing braking when power is applied and for braking when the power is off,
The wrought iron 530 includes a wrought iron frame 531 formed in a rectangular shape and a wrought iron panel 532 attached to the upper surface of the wrought iron frame 531,
The underground transmission line C supported by the wrought iron 530 when the wrought iron 530 is raised and lowered by the elevation driving means 500 is provided on the upper four corners of the wrought iron panel 532 of the wrought iron 530, Or the lower surface of the left and right movable table 460,
The elevating upper limit stopper 570 is formed in a cylindrical shape so as to be coaxial with the elevating guide holes 564 and 565 and is guided up and down by the elevating guide bar 560,
The control means 600 includes a front and rear switch 610, a left and right switch 620 and an elevation switch 630 provided at the entrance of the power tunnel 100 and the inner wall surfaces on both sides of the power tunnel 100, When the ground transmission line C provided on the bottom surface of the wrought iron 530 except for the bottom wire positioned at the lowermost side is close to the lower surface of the upper wrought iron wire 530 or the left and right moving table 460, The operation of the elevation limit switch 640 and the operation of the elevation limit switch 640 are controlled in accordance with the operation of the elevation limit switch 640 for stopping the operation of the elevation limit switch 640 and the operation of the forward / backward switch 610, the left / right switch 620, And a control unit (650) for controlling the elevation drive motor (410) and the elevation drive motor (540).