KR100909263B1 - Underground distribution line of draw in and out box - Google Patents

Abstract

An underground distribution line of draw in and out box is provided to prevent short-circuit between the underground electronic lines by forming a switch part in a protection box. The underground distribution line(L1,L2) is inserted into the line hole(11-1) of the protection box. The protection box has the door(12). The fixing plate(20) is fixed to the protection box. The fixing plate comprises a plurality of guide grooves(21). Switch parts(40a,40b) sense the movement of the slide member to the restriction site. The controller receives the sensing signal from the switch part to output the emergency signal.

Description

Underground Distribution Line Of Draw In And Out Box}

The present invention relates to a lead-out distribution guide connection box of the underground distribution line that can be effectively wired to the inside of the protective box to protect the underground wires buried in the ground effectively by external interference.

In general, power lines are installed in the telephone poles or buried in the ground to supply electricity. The ground and aerial construction method is more economical than construction in the ground considering the constructability, required construction cost, and construction period. There is an advantage that can be simplified, but the building is very close to the dense place, such as downtown, the installation is quite difficult disadvantages, when installed in the underground or in the case of demanding high current in the city.

In the case of the method of embedding in the underground, when connecting the wire and the wire to the wire sheathed stripping of the wire and then twisted together, and the outer surface of the connected portion to protect the insulation tape wrapped, this work method is the diameter of the wire This is possible in the case of thin, but if the diameter is thick installation is difficult.

In addition, most of the wires are simply wired, so when an earthquake occurs, underground cables wired inside the manhole are severely shaken from side to side due to transverse waves, and strong tensile forces are generated between the underground cables, causing short-circuiting of underground cables. In order to solve these problems, research is being actively conducted, as well as a means for promptly indicating a tension force in the underground wire as described above is not actively provided.

Accordingly, the present invention has been made to solve the above problems, the operator can quickly cope by transmitting a danger signal to the worker in advance so that the underground wires interconnected inside the manhole are excessively tensioned and the joints are not shorted. By protecting the joints of underground cables, the joints can be safely protected and wires can be easily handled in the event of wire binding, and the position and length of underground cables can be freely changed in case of earthquake in the transverse direction. Its purpose is to provide a lead-out distribution guide box for underground distribution lines.

The present invention for achieving the above object,

The upper part is opened, and a plurality of wiring holes are formed on both sides so that underground wires drawn into the manhole are inserted and connected to each other. A protective box having a door part which is possibly installed;

A fixing plate having a plurality of guide grooves formed in a longitudinal direction on an upper surface thereof, the fixing plate being fixed to the inside of the protective box by a bolt;

The guide member protrudes outwardly along the longitudinal direction so as to be horizontally installed in the guide groove, and is formed on the left and right sides in the longitudinal direction, and has a screw tab formed on the outer circumferential surface thereof, A main body portion of an insulating material into which the electric wire is inserted; Connection bracket of conductor material installed in the main body to electrically connect the conductors of underground wire, the fixture to crimp and fix the underground wire while wrapping the outer surface of the underground wire, and the circumference of the fixture to be rotated to the fixture. A slide member having a fastening fitting, the fastening fitting being made possible and screwed to the fastening part and formed of a fastening body for fixing the fastening part to the fastening part;

Switch units respectively installed at the door parts of the protective box to sense movement of the slide member to the restricted position;

A control unit which receives the detection signal from the switch unit and outputs an emergency signal;

It is characterized in that it comprises a transmission unit for operation controlled by the control unit to wirelessly transmit an emergency signal from the control unit to the outside.

According to the present invention having the above configuration, by providing a switch unit and a transmission unit operated by a slide member horizontally moved to a limited position in the door unit, a worker may not be required to check the wiring state of the underground wire at any time without causing a danger signal. It can receive and move manually to reduce the maintenance and repair cost and labor cost, and by making the connecting part of the guide groove and the guide member in the form of upper and lower beams to prevent the vertical vibration of the guide member moving along the guide groove, And it prevents the electrical safety accidents due to short circuits due to contact with other underground cables due to left and right shaking in advance and can be moved only horizontally, thereby enhancing the seismic function.

In addition, it is possible to protect the joints between the underground cables by freeing the positional change and the length change of the underground cables during an earthquake in the transverse direction.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an installation state diagram of the lead-out distribution guide type junction box of the underground distribution line according to the present invention, Figures 2a to 2b is a combined perspective view showing the main portion of the lead-out distribution guide type junction box of the underground distribution line according to the present invention and 3 is an exploded perspective view, and FIG. 3 is a block diagram showing an interconnection relationship between components of a lead-out distribution guide junction box of a underground distribution line according to the present invention.

The lead-out distribution guide type junction box of the underground distribution line according to the present invention, the upper portion is open, a plurality of wiring holes to be connected to the ground wire (L1, L2) inserted into the manhole (1) is inserted into both sides A base 4 mounted in the manhole 1 with a housing 11 having an 11-1 formed therein and a door portion 12 that can be opened and closed at an upper portion of the opened housing 11. A protection box 10 fixed to the installation unit; A fixing plate 20 having a plurality of guide grooves 21 formed on the upper surface in the longitudinal direction and fixedly installed through the bolt B in the protective box 10; The guide member 31-1 which protrudes outward along the longitudinal direction and is horizontally movable in the guide groove 21, and is formed on the left and right sides of the longitudinal direction, respectively, and a thread tab is formed on the outer circumferential surface thereof. A main body portion 31 made of an insulating material having a fastening portion 31-2 penetrated therein through which underground wires L1 and L2 are inserted; The underground wires L1, L1, L1, L1, L2 are formed in the main body 31 and wrap around the outer surface of the underground wires L1, L2, and the connection brackets 32 of a conductor material electrically connecting the conductor wires of the underground wires L1, L2. The fixing body 33-1 for crimping and fixing L2 and the circumferential surface of the fixing body 33-1 are rotatably fitted to the fixing body 33-1, and are fastened to the fastening portion 31-2. A slide member (30) having a fastening bracket (33) made of a screw (33-2) which is screwed to fix the fixed body (33-1) to the fastening portion (31-2); Switch parts 40a and 40b respectively installed at the door parts 12 of the protective box 10 to detect movement of the slide member 30 in the restricted position; A control unit 50 for receiving a detection signal from the switch units 40a and 40b and outputting an emergency signal; Operation control by the control unit 50 is composed of a transmission unit 60 for transmitting the emergency signal from the control unit 50 to the outside, as shown in Figures 1 to 2b.

The manhole (1) embedded in the ground, the upper part is opened in the concrete material, the manhole cover (2) is installed to be opened and closed to the upper side is opened, the underground wire (enter the inner surface) to enter the inner side ( A wiring conduit 3 is provided so as to protect the covering of L1 and L2 and to wire at the same time, and a pedestal 4 is provided on the inner bottom of the manhole 1.

In the present embodiment, the manhole cover 2 is a lattice-shaped reinforcing structure. The upper or lower surface of the lattice-shaped manhole cover 2 has a filtering network to block foreign substances such as garbage or stones into the lattice space. Not specifically illustrated).

The enclosure 11 of the protective box 10 fixed to the pedestal 4 installed inside the manhole 1 is a rectangular parallelepiped with an open upper side, and a plurality of sides in the same horizontal line on both sides in the longitudinal direction. A wiring hole 11-1 is formed, and underground wires L1 and L2 inserted into the manhole 1 through the wiring hole 11-1 are inserted and wired, and the wiring hole 11-1 is formed therein. Although not specifically shown on the inner circumferential surface of the to prevent the infiltration water from entering through the sealing treatment.

The door part 12, which is installed to be opened and closed on the upper surface of the housing part 11, is rotatably installed at both ends of the inside of the open housing part 11 in a swing form to be described later with the fixing plate 20. The slide member 30 installed on the fixed plate 20 so as to be reciprocated and the underground wires L1 and L2 connected to the inside of the slide member 30 are externally interfered, ie, blocking the inflow of foreign substances and infiltration water. Underground wires (L1, L2) installed in the role to prevent the short circuit caused by the infiltration water.

In addition, a handle portion (not specifically shown) is provided on one side of the upper surface of the door part 12 so that an operator can easily open and close it during maintenance and repair.

Although not specifically illustrated in the present embodiment, a step (not specifically shown) is formed inside the upper part of the open enclosure 11, but a soft rubber pad (not specifically shown) having excellent compressive force on the top of the step. It is preferable to prevent the penetration of the infiltration water through the door portion 12 by attaching so that it is easily compressed by the weight of the door portion 2 when the door portion 12 is closed.

In addition, the material of the enclosure part 11 and the door part 12 constituting the protective box 10 is insulated so that electricity is not energized well when the ground wires L1 and L2 which are internally wired are leaked. It was formed of a material.

In the present embodiment, the fixing plate 20 is formed in a rectangular parallelepiped, but the wing piece 22 which protrudes outwardly on the front and rear of the bottom and is provided with mounting holes 22-1 at predetermined intervals inside. ) Is integrally formed.

In the case where the fixing plate 20 is to be fixed to the inside of the enclosure 11, the bottom surface of the fixing plate 20 is seated on the bottom surface of the enclosure 11. Insert the bolt (B) into the mounting hole (22-1) and fix the installation on the bottom surface of the enclosure (11).

In addition, the guide groove 21 is in communication with the upper and left and right sides in the longitudinal direction, the shape seen from the side is a trapezoidal shape, which corresponds to the guide member 31-1 of the slide member 30 to be described later The shape of the guide groove 21 and the guide member 31-1 corresponding thereto is not limited to a trapezoidal shape, and may be manufactured in various shapes as necessary.

The slide member 30 installed in the guide groove 21 so as to be reciprocated is provided with a guide member 31-1 protruding outward along the length direction and installed in the guide groove 21 so as to be movable horizontally. The main body part of the insulating material which is formed in the left and right sides of a direction, the screw tab is formed in the outer peripheral surface, and has the fastening part 31-2 which penetrated the inside, and which underground wires L1 and L2 is inserted in the inside (31); The underground wires L1 and L2 are enclosed in the main body 31 and surround the outer surface of the underground wires L1 and L2, and the connection brackets 32 of a conductor material electrically connecting the conductor wires of the underground wires L1 and L2. ) Is rotatably fitted to the fixing body 33-1 and the fixing body 33-1 while surrounding the circumferential surface of the fixing body 33-1. Combination is made of a fastener (33) consisting of a coupling body (33-2) for fixing the fixing body (33-1) to the fastening portion (31-2), as shown in Figures 2a to 2b.

The main body portion 31 of the slide member 30 is a guide member 31-1 which protrudes outward in the longitudinal direction and is horizontally movable in the guide groove 21, and on the left and right sides in the longitudinal direction. Each is formed, the screw tab is formed on the outer circumferential surface, the interior is made of a fastening portion 31-2 through which the inside is in communication with the fastening portion 31-2, the underground wire (L1, L2) is inserted into the interior It is made of insulating material.

In the present embodiment, the main body 31 has an overall shape of a rectangular parallelepiped and an insulating material, which penetrates in the longitudinal direction, and electrically connects the conductive wires of the underground wires L1 and L2 introduced into the inner center thereof. Note that the connection bracket 32 is inserted, the connection bracket 32 is preferably formed of a conductive material such as copper, aluminum having excellent electrical conductivity, it is installed inside through the insert (Insert) molding, the insert ( Insert) molding is a known technique and its detailed description will be omitted.

The fastening brackets 33 in which the one inner circumferential surface is fixed to the outer surfaces of the underground wires L1 and L2 and the other outer circumferential surface are fastened and fastened to the fastening portions 31-2 of the main body part 31 are underground wires L1 and L2. The fixing body 33-1 fixed to the outer surface of the head), one end is rotatably installed on the outer surface of the fixing body 33-1, and the other end is connected to the fastening portion 31-2 of the main body portion 31. It consists of a combined body 33-2 to be coupled, as shown in Figure 2a to 2b.

In the present embodiment, the fixture 33-1 in a state in which the fixture 33-1 is inserted into the outer surface of the underground wires L1 and L2 introduced through the wiring hole 11-1 of the enclosure 11. The outer surface of the body is firmly buried with a tool and fixed to the underground wires L1 and L2, and the coupling body 33-2 installed on one side of the fixing body 33-1 to be rotatable is fastened to the main body part 31. By fastening and coupling to the part 31-2, the underground wires L1 and L2 were easily connected when interconnected.

The door part 12 of the protective box 10 is provided with switch parts 40a and 40b for detecting the movement of the slide member 30 to the restricted position, respectively.

The switch units 40a and 40b are conventional limit switches, and together with the underground wires L1 and L2 when the underground wires L1 and L2 connected to the slide member 30 are pulled in any one direction. The slide member 30 is moved, and at this time, an operation unit (not specifically shown) protruding downward is pressed upward to be operated by the slide member 30 which is moved to a restricted position.

Therefore, when the switch unit 40a or 40b detects the slide member 30 moved to the restricted position, the detection signal is transmitted to the control unit 50, and the control unit 50 from the switch unit 40a or 40b. Receives a detection signal and outputs a danger signal to the transmission unit 60, and the transmission unit 60 receives the danger signal by wirelessly transmitting a danger signal to the central control room (not specifically shown) where the operator resides. By zooming, the operator can intuitively recognize the current state of the underground wires (L1, L2) through the received danger signal, as well as can quickly respond to this, as shown in Figure 3 .

Referring to the operational relationship of the present invention made of the above configuration as follows.

4 is an operation relationship diagram of a lead-out distribution guide type junction box of the underground distribution line according to the present invention.

First, look at the installation process of the underground wires (L1, L2), by installing the fixed plate 20 to the slide member 30 is installed to the inside of the protective box 10 fixed to the upper surface of the pedestal (4) And insert the underground wires L1 and L2 introduced into the manhole 1 into the wiring holes 11-1 formed on both sides of the housing part 11, and the ground wires L1 and L2. Under the condition that the fastening brackets 33 are installed on the outer surface, the conductors of the underground cables L1 and L2 are inserted into the connection brackets 32 mounted inside the slide member 30 so as to be electrically connected. The coupling body 33-2 of the fastening bracket 33 fixed to the outer surfaces of L1 and L2 is rotated counterclockwise to the fastening portion 31-2 of the slide member 30 to be fastened to each other.

Looking at the operation relationship of the lead-out distribution guide type junction box of the underground distribution line according to the present invention, the slide member 30 is usually connected to the ground wire (L1, L2) is located in the center of the upper surface of the fixed plate 20 do.

However, when an earthquake occurs in the transverse direction, the underground wires L1 and L2 interconnected to the inside of the slide member 30 have a force acting in one direction by left and right vibration, and at this time, the fixed plate 20 The guide member 31-1 of the main body 31 inserted into the guide groove 21 of the main body 31 moves along the longitudinal direction of the fixed plate 20 together with the underground wires L1 and L2 moving from side to side. .

If the guide member 31-1 is moved to the left and right as described above, the switch unit 40a, 40b installed in the door portion 12 is detected by the slide member 30 to be moved to the restricted position, In more detail, when the switch unit 40a or 40b detects the slide member 30 moved to the restricted position, the detection signal is transmitted to the control unit 50, and the control unit 50 includes the switch unit 40a, 40b) receives the detection signal and outputs a danger signal to the transmission unit 60, the transmission unit 60 received the danger signal to the central control room (not specifically shown) where the operator resides wirelessly By sending the zoom, the operator can intuitively recognize the state of the current underground wire (L1, L2) through the received danger signal, as well as to be able to respond quickly.

As described above, when a force is applied to the underground wires L1 and L2 in one direction, the guide member 31-1 moves horizontally along the guide groove 21, thereby acting on the underground wires L1 and L2. It is possible to reduce the tensile force as possible to prevent the interconnected underground wires (L1, L2) from being disconnected by the tensile force.

In addition, by installing the switch unit (40a, 40b) and the transmitter (60) for detecting that the slide member 30 is moved to the restricted position in the door portion 12, the operator at any time to the underground wire (L1, It is possible to reduce maintenance and repair costs and labor costs by manually moving only when a danger signal is received without checking the wiring status of L2).

In addition, by making the connecting portion of the guide groove 21 and the guide member 31-1 in the form of upper and lower beams to prevent the vertical vibration of the guide member 31-1 moving along the guide groove 21, It prevented contact by shaking with underground cable and moved horizontally to strengthen seismic function.

 Although the present invention has been described in detail only with respect to the specific embodiments described, it will be obvious to those skilled in the art that various modifications and changes can be made within the technical scope of the present invention, and such modifications and modifications belong to the appended claims.

1 is an installation state of the lead-out distribution guide type junction box of the underground distribution line according to the present invention.

2A to 2B are exploded perspective and exploded perspective views showing the main portion of the lead-out distribution guide junction box of the underground distribution line according to the present invention separately.

Figure 3 is a block diagram showing the interconnection relationship between the components of the lead-out distribution guide junction box of the underground distribution line according to the present invention.

Figure 4 is an operation relationship of the lead-out distribution guide type junction box of the underground distribution line according to the present invention.

* Description of the symbols for the main parts of the drawings *

1: manhole 2: manhole cover 3: wiring

4: base 10: protector 11: enclosure

20: fixed plate 21: guide groove 30: slide member

31-1: Guide member 31-2: Fastening part 32: Connection bracket

33: fastening tool 40a.40b: switch 50: control unit

60: transmitter

Claims (1)

The upper part is opened, and a plurality of wiring holes 11-1 are formed at both sides to insert underground wires L1 and L2 inserted into the manhole 1 so that the wires can be connected and placed inside the manhole 1. A protective box (10) having a housing (11) fixedly installed on the seat (4), and a door portion (12) installed on the upper portion of the opened housing (11) so as to be openable and closed; A fixing plate 20 having a plurality of guide grooves 21 formed on the upper surface in the longitudinal direction and fixedly installed through the bolt B in the protective box 10; The guide member 31-1 which protrudes outward along the longitudinal direction and is horizontally movable in the guide groove 21, and is formed on the left and right sides of the longitudinal direction, respectively, and a thread tab is formed on the outer circumferential surface thereof. A main body portion 31 made of an insulating material having a fastening portion 31-2 penetrated therein through which underground wires L1 and L2 are inserted; The underground wires L1 and L2 are enclosed in the main body 31 and surround the outer surface of the underground wires L1 and L2, and the connection brackets 32 of a conductor material electrically connecting the conductor wires of the underground wires L1 and L2. ) Is rotatably fitted to the fixing body 33-1 and the fixing body 33-1 while surrounding the circumferential surface of the fixing body 33-1. A slide member (30) having a fastening bracket (33) which is coupled and is formed of a coupling body (33-2) to secure the fixed body (33-1) to the fastening portion (31-2); Switch parts 40a and 40b respectively installed at the door parts 12 of the protective box 10 to sense the movement of the slide member 30 to the restricted position; A control unit 50 for receiving a detection signal from the switch units 40a and 40b and outputting an emergency signal; In and out distribution distribution guide type connection box of the underground distribution line, characterized in that it comprises a transmitter (60) operationally controlled by the control unit (50) to wirelessly transmit an emergency signal from the control unit (50) to the outside.

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