KR102024670B1 - Underground distribution line connection device capable of stable distribution - Google Patents

Abstract

The present invention relates to a connection device for an underground distribution line capable of stable power distribution, comprising: a housing (10); a pair of power distribution line fixing assemblies (20) installed in the housing (10) to be slid and electrically connected to power distribution lines (L) led to the inside of the housing (10); a coil spring (30) installed in the housing (10) and elastically supporting the power distribution line fixing assemblies (20) in one direction; a jumper wire (40) electrically connecting the power distribution lines (L) to each other each installed in the power distribution line fixing assemblies (20); a jumper wire replacement assembly (50) installed in the housing (10) to electrically disconnect the power distribution line fixing assemblies (20) and the jumper wire (40) while electrically connecting the pair of power distribution line fixing assemblies (20) having the power distribution lines (L) installed therein so that the jumper wire (40) can be replaced in a live wire state; and a conducting check unit (60) detachably fixed to a lower portion of the jumper wire replacement assembly (50) to check the conduction of the current flowing along the jumper wire (40) while holding the jumper wire (40). According to the present embodiment, the management is very convenient by enabling an operator to easily recognize a conducting state of the current flowing along the jumper wire through whether a light of the conducting check unit (60) is turned on or off.

Description

Underground distribution line connection device capable of stable distribution

The present invention relates to an underground power distribution line connection device that can be easily recognized by the operator can easily recognize the current state of the current, the management is very convenient, the stable power distribution can proceed in the live state without shutting off electricity.

In general, underground distribution lines are installed inside underground pipelines buried in the underground, and are configured to be extended or branched to supply electricity to each building or house while being connected to an insulation band provided inside the underground pipelines. In order to be buried in the ground, the connection between the distribution lines is made through the connection of the underground distribution lines.

Conventional technology for electrically interconnecting underground distribution lines is Korean Patent No. 10-1448143, which discloses a technology for easily and simply connecting and disconnecting underground distribution lines.

However, in the prior art, there was no means for detecting the current flowing along the underground distribution line, and when a tensile force occurred in the underground distribution line, it was difficult to cope with it. Residents due to the interruption of the power supply were inconvenient because the replacement work had to be carried out while the electricity flowing along the underground distribution line was cut off when the interconnecting parts were replaced.

1. Republic of Korea Patent Registration No. 10-1448143 (2014.10.08)

The present invention has been made to solve the above problems, the operator can easily recognize the current state of the current is very convenient management, stable distribution that can proceed the replacement work in the live state without breaking the electricity The aim is to provide possible underground distribution line connections.

The present invention for achieving the above object,

Distribution lines are respectively introduced through the both ends into spaces provided therein, openings communicating with the inside are provided on the front surface, and a case part having a nut part integrally communicating with the inside is spaced apart from the bottom surface of the inner both ends of the case part. A housing made of an insulating material including an opposing projecting part, an opening / closing part for opening and closing an opening of the case part, and a locking part provided in the case part to control opening and closing of the opening part;

Spaced apart from each other in the case portion is moved to slide along the guide portion, the coupling hole is provided on the upper end of one end, the base of the insulating material provided with an elastic receiving groove on both sides of the other end, and the distribution line drawn in through both ends of the case The fixed terminal fixed to the base via a fastening means to be electrically connected to the base, a jumper terminal that is removably inserted into the coupling hole, and the fixed terminal and the jumper terminal is electrically connected to the base via a shaft pin. It consists of a variable terminal connected to the terminal, a spring for supporting the variable terminal in one direction, a support that is installed on the base to support the spring, and a guide angle is installed on the base to be disposed on the top of the fixed terminal, the guide angle Distribution line fixing assembly;

A coil spring inserted into the elastic body receiving groove so as to be disposed between the case portion and the base to support the base in one direction;

Jumper wires at both ends of which are respectively installed at jumper terminals of the distribution line fixing assembly and electrically interconnecting the distribution lines respectively installed at the distribution line fixing assembly;

It is fastened to the nut part to be able to be lifted, a plurality of handles are formed on the outer circumferential surface of the upper part, and there is a lifting bolt formed integrally with a coupling hole which is opened downward, and is installed in the case part with a connection part rotatably coupled to the coupling hole. A lifting mechanism composed of an insulating block moved up and down by lifting bolts,

A conductive pipe connected to the insulating block horizontally and integrally formed with the insulating block;

An extension bar fitted to be movable through both ends of the connection pipe and being in contact with the inner surface of the connection pipe is extended from the other end of the extension bar and the extension bar, and is inserted into the guide hole of the guide angle when descending. A conductive terminal connection member with a terminal connecting rod which is interposed between the fixed terminal and the fixed terminal to electrically connect the fixed terminal and the variable terminal, and rotates the variable terminal around the shaft pin so that the other end of the variable terminal and the jumper terminal are separated from each other. Jumper wire replacement assembly consisting of;

Rotating clamps are formed integrally with fixed clamps, rotating clamps and rotating clamps which are installed on the body of insulating material fixed to the bottom of the insulating block and fixed by the fastening means, and are fixed to the outer surface of the jumper wire by detaining. And a clamping current detection unit for receiving the induction current generated from the jumper wire and detecting the separation current from the fixed clamp.

A conversion unit connected to the clamp current detection unit for converting an AC current input from the clamp current detection unit into a DC current and outputting the DC current;

It is installed to protrude from the body portion is supplied with a direct current from the conversion unit consisting of a conduction confirmation unit consisting of a light; characterized in that it comprises a.

According to this embodiment, the operator can easily recognize the energized state of the current flowing along the jumper wires through the lighting of the electricity confirmation unit, the management is very convenient.

In addition, when the tensile force is generated in the distribution line can be accommodated to prevent the departure of the distribution line.

In addition, since the operation of the jumper wire can be performed in the live state without cutting off the electricity of the distribution line, the operation becomes very convenient and there is an advantage that a stable electricity supply is possible.

1 is a combined perspective view of a underground distribution line connection device capable of stable distribution according to the present invention.
Figure 2 is a front sectional view of the underground distribution line connection device capable of stable distribution according to the present invention.
Figure 3 is a plan sectional view of the underground distribution line connection device capable of stable distribution according to the present invention.
Figure 4 is an exploded perspective view of the main portion of the underground distribution line connection device capable of stable distribution according to the present invention.
Figure 5 is an exploded perspective view showing a separate assembly for the distribution line fixing in the underground distribution line connection device capable of stable distribution according to the present invention.
6a to 6c is a bottom perspective view and a front view and a block diagram showing an extract of the energization check unit separately in the underground distribution line connection device capable of stable distribution according to the present invention.
7 is a view for explaining the operation of the underground distribution line connection device capable of stable distribution according to the present invention.
8A and 8B are views illustrating a process of replacing a jumper wire by using the underground distribution line connection device capable of stable distribution according to the present invention.

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

1 is a combined perspective view of a underground distribution line connection device capable of stable distribution according to the present invention, Figure 2 is a front sectional view of a underground distribution line connection device capable of stable distribution according to the present invention, Figure 3 is a stable according to the present invention 4 is a cross-sectional plan view of a underground distribution line connection device capable of power distribution, and FIG. 4 is an exploded perspective view of an essential part of the underground distribution line connection device capable of stable distribution according to the present invention, and FIG. 5 is a connection of underground distribution line capable of stable distribution according to the present invention. Figure 6a to 6c is an exploded perspective view showing a separate assembly for fixing the distribution line in the device, Figures 6a to 6c is a bottom perspective view and front view and block shown by extracting the energization check unit separately from the underground distribution line connection device capable of stable power distribution according to the present invention It is also.

1 to 5, the underground distribution line connection device according to the present invention, the housing 10 and a pair of distribution line fixing assembly 20, coil spring 30, jumper wire 40, jumper bridge The body assembly 50 and the conduction confirmation unit 60, according to which the operator can easily recognize the current supply state through the presence or absence of the light of the light (63), to accommodate this when the tensile force generated in the distribution line (L) It is possible to prevent the departure of the distribution line (L), there is a technical feature that can proceed the replacement of the jumper wire 40 in the live state without blocking the electricity.

1 to 3, the housing 10 is a member made of an insulating material including a case part 11, a guide part 12, an opening / closing part 13, and a locking part 14. It is built in a power outlet (not shown) embedded in the.

In addition, the housing 10 protects the distribution line fixing assembly 20, the coil spring 30, the jumper wire 40, the jumper wire replacement assembly 50, and the conduction check unit 60 accommodated therein from external forces. It plays a role.

The case part 11 is a rectangular box, and a space part is provided inside the power distribution line fixing assembly 20 and the jumper wire 40, the jumper wire replacement assembly 50, and the energization check unit 60. The front surface is provided with an opening communicating with the inside, the upper surface is in communication with the inside and the nut portion (11a) is formed integrally with a screw tab formed on the inner peripheral surface.

The guide part 12 is provided at both ends of the inner part of the case part 11, and more specifically, is spaced apart from the bottom surface of the case part 11 and protrudes to face each other. It serves as a guide.

The opening and closing part 13 is used as a door, and installed in the case part 11 via a hinge to open and close the opening of the case part 11.

The locking part 14 is rotatably installed on the front of the case part 11 and serves to control the opening and closing of the opening and closing part 13.

In the housing 10 having the structure as described above, the distribution line L is introduced through both ends, and the introduced distribution line L is a pair of distribution line fixing assembly 20 and a jumper line 40 or a pair of distribution lines L. It is electrically connected by the distribution line fixing assembly 20 and the jumper wire replacement assembly (50).

2 to 5, the pair of power line fixing assemblies 20 includes a base 21, a fixed terminal 22, a jumper terminal 23, a variable terminal 24, a spring 25, It consists of the support tool 26 and the guide angle 27.

In the present embodiment, the housing 10 is slidably moved, and is electrically connected to the distribution line L drawn into the housing 10.

The base 21 is an insulating plate having a predetermined thickness and is slidably inserted between the bottom surface of the case part 11 and the guide part 12. Coupling holes 21a formed to be stepped are provided, and elastic body accommodating grooves 21b are provided at both side surfaces of the other end.

Here, the jumper terminal 23 is removably inserted into the coupling hole 21a, and the coil spring 30 is fitted into the elastic receiving groove 21b to elastically support the base 21 in one direction.

The fixed terminal 22 is a block made of a conductive material. In the present embodiment, the fixed terminal 22 is disposed on the upper surface of the other end of the base 21, that is, the upper surface provided with the elastic receiving groove 21b, and is fixed through the fastening means (screw bolts). .

The jumper terminal 23 is a member of a conductive material electrically connected to the jumper wire 40. In this embodiment, the jumper terminal 23 is removably fitted into the coupling hole 21a of the base 21. On the outer circumferential surface of the portion to be inserted into 21a, an outwardly extending stepped portion 23a is integrally formed so that the insertion depth of the jumper terminal 23 is increased by the stepped portion 23a when inserted into the coupling hole 21a. Limited.

In addition, when the outer circumferential surface of the jumper terminal 23 is abutted on the semicircular groove (see FIG. 5) provided at the other end of the variable terminal 24, the stepped portion 23a is caught by the lower surface of the variable terminal 24. The jumper terminal 23 can be restricted from being separated from the coupling hole 21a.

The variable terminal 24 is a block of a rectangular parallelepiped conductive material. In the present embodiment, the variable terminal 24 is rotatably installed on the upper surface of the base 21 via a shaft pin P. The fixed terminal 22 and the jumper terminal 23 are rotated. ) It acts as a switch to connect or cut off electrical.

Here, one end of the variable terminal 24 is opposed to one surface of the fixed terminal 22, and one surface of the other end is provided with a semi-circular groove (see Fig. 5) is provided against the outer peripheral surface of the jumper terminal 23.

In particular, funnel-shaped grooves (see FIG. 5) are provided on the surface and the upper surface where the fixed terminal 22 and the variable terminal 24 are opposed to each other, which are terminals of the jumper wire replacement unit 50, which will be described later. This is to allow the connecting rod 53b to be easily inserted between the fixed terminal 22 and the variable terminal 24.

The spring 25 is a coil spring. In the present embodiment, the spring 25 is disposed on the upper surface of the base 21 so that the other end of the variable terminal 24 and the jumper terminal 23 are brought into close contact with each other. The other end serves to support the bullet in one direction toward the jumper terminal 23.

The support 26 is installed on the base 21 to support the spring 25.

The guide angle 27 is a member having a cross-section having an approximately 'C' shape. In the present embodiment, the guide angle 27 is installed on the base 21 via a fastening means (screw bolt) to be disposed above the fixed terminal 22. .

In addition, the upper surface of the guide angle 27 is provided with a guide hole (27a) penetrated up and down, the terminal connecting rod (53b) of the jumper wire replacement assembly 50 described later is provided in the guide hole (27a) It is fitted to be elevated.

On the other hand, if the shape of the guide hole (27a) is made in the same shape as the end surface of the lower end of the terminal connecting rod (53b) rather than circular (round), the stepped portion of the step in the process of the terminal connecting rod 53b is lowered Since it is caught on the upper surface of (27), it is possible to limit the excessive falling of the terminal connecting rod (53b) is safe.

Referring to FIGS. 1 and 6, the coil spring 30 is inserted into the elastic accommodating groove 21b to be disposed between the case part 11 and the base 21 to support the base 21 in one direction. Do it.

7 is a view for explaining the operation of the underground distribution line connection device capable of stable distribution according to the present invention, when described with reference to this, when a tensile force is generated in the distribution line (L), the assembly line fixing assembly 20 Is moved by this, and when the tension is released, the distribution line fixing assembly 20 is returned to the initial state by the coil spring 30.

2 and 4, both ends of the jumper wire 40 are installed on the jumper terminal 23 of the distribution line fixing assembly 20 through fastening means (screw bolts), respectively, and the assembly line fixing assembly ( It serves to electrically interconnect the distribution lines (L) respectively installed in 20).

In addition, the jumper wire 40 is maintained in a suspended state by the energization check unit 60 installed in the jumper wire fixing assembly 50.

And since the jumper wire 40 is installed in the housing 10 with a sufficient length, when a tension is applied to the power distribution line L, the jumper wire 40 is unfolded when the assembly for fixing the power distribution line 20 is moved from side to side. Since it accommodates, the problem that the distribution line (L) is separated from the distribution line fixing assembly 20 due to the tensile force can be improved.

2 to 4, the jumper wire replacement assembly 50 is composed of a lifting mechanism 51, a connecting pipe 52, and a terminal connecting member 53, which is installed in the housing 10 in the present embodiment. The electrical wiring interconnection assembly (20) and the jumper wire assembly (20) and the jumper wire (40) while electrically interconnecting a pair of power distribution line fixing assembly 20 is installed to allow the replacement of the jumper wire 40 in the live state It breaks the electrical connection between

The lifting mechanism 51 is composed of a lifting bolt (51a) and the insulating block (51b), the lifting bolt (51a) and the insulating block (51b) has a rotatable structure, in this embodiment the lifting bolt (51a) The insulating block 51b is made of an insulating material.

The lifting bolt 51a is a member which is fastened to the nut part 11a so as to be lifted and lowered, and a plurality of handles 51a-1 are integrally formed on the outer circumferential surface of the upper end so that an operator can rotate the lifting bolt 51a. A coupling hole 51a-2 opened downward is integrally formed therein, and the coupling part 51b-1 of the insulating block 51b is rotatably coupled to the coupling hole 51a-2.

In particular, the inner circumferential surface of the coupling hole 51a-2 may be provided with a stepped portion protruding inward to prevent separation of the insulating block 51b by being coupled to the connecting portion 51b-1.

The insulating block 51b is a member made of an insulating material in the case part 11, and a connecting part 51b-1 rotatably coupled to the coupling hole 51a-2 is integrally formed on the upper surface of the insulating block 51b, and the lifting bolt is integrally formed. By the rotation of 51a, it moves up and down with the lifting bolt 51a.

The connection pipe 52 is a member made of a conductive material that guides the extension bar 53a of the terminal connection member 53 and is horizontally inserted to penetrate the insulating block 51b.

On the other hand, the insulating block 51b and the connection pipe 52 may be manufactured integrally by insert molding, or through the fixing means (screw bolt) in a state in which the connection pipe 52 is fitted to the insulating block 51b. It may be fixed to each other to form an integrated structure.

The terminal connecting member 53 is a member made of a conductive material consisting of an extension bar 53a and a terminal connecting rod 53b, and is electrically connected to the connecting pipe 52 by being inserted to be movable through both ends of the connecting pipe 52. do.

The extension bar 53a is inserted into the connection pipe 52 so as to be movable and is electrically connected to the inner surface of the connection pipe 52 by an elastic ball piece 53a-1 provided at one end thereof.

The terminal connecting rod 53b extends downward from the other end of the extension bar 53a and is fitted into the guide hole 27a of the guide angle 27.

Particularly, the terminal connecting rod 53b is interposed between one end of the variable terminal 24 and the fixed terminal 22 when descending, and electrically connects the fixed terminal 22 and the variable terminal 24 to the variable terminal 24. ) Is rotated about the shaft pin (P) to space the other end of the variable terminal 24 and the jumper terminal 23.

In addition, the lower end of the terminal connecting rod (53b) is tapered to be easily inserted between the fixed terminal 22 and the variable terminal (24).

In addition, the terminal connecting rods 53b have different sizes of portions inserted into the fixed terminals 22 and portions inserted into the variable terminals 24, which are inserted between the fixed terminals 22 and the variable terminals 24. This is to smoothly induce the rotation of the variable terminal 24 through the expansion of the diameter in the process so that the variable terminal 24 from the jumper terminal 23 is spaced from each other.

2 and 3 and 6a to 6c, the energization confirmation unit 60 is composed of a clamp-type current detection unit 61, a conversion unit 62 and a lamp 63, in the present embodiment jumper bridge Removably fixed to the lower part of the sieve assembly 50 serves to check the presence or absence of current flowing along the jumper wire 40 while holding the jumper wire (40).

The clamp type current detecting unit 61 is composed of a body portion 61a, a fixed clamp 61b, a rotation clamp 61c, and a pressing piece 61d. In the present embodiment, the clamp current detecting unit 61 is disposed below the jumper wire replacement assembly 50. It is detachably installed and is attached to the outer surface of the jumper wire 40 to detect an induced current.

The upper surface of the body portion (61a) is provided with a vertical flange (61a-1) protruding upward from both ends, and a horizontal flange (61a-2) protruding horizontally from the vertical flange (61a-1), where the vertical flange 61a-1 is abutted against the lower end surface of the insulating block 51b, and is fixed through the fastening means (screw bolts), and a light 63 is installed on the bottom of the horizontal flange 61a-2.

The fixed clamp 61b and the rotation clamp 61c are installed at the lower portion of the body portion 61a, and serve to restrain the outer surface of the jumper wire 40 and detain it.

The pressing portion 61d is integrally formed on the rotation clamp 61c and exposed to the outer surface of the body portion 61a. The pressing portion 61d rotates the rotation clamp 61c so as to be spaced apart from the fixed clamp 61b.

The clamp-type current detection unit 61 having the above structure receives a induced current generated from the jumper wire 40 by using a current transformer, commonly referred to as CT (Current Transfomer), and detects it. In general, a cylindrical iron core having a circular hole ( Core) or a permanent magnet wound around the secondary coil for current detection, and the circular hole penetrates the wire to convert the current flowing through the wire into a small current on the secondary side through magnetic conversion, and the clamp type current detection unit ( The specific configuration of 61) is a known technique, so a detailed description thereof will be omitted.

The conversion unit 62 rectifies and smoothes the AC current input from the clamp-type current detection unit 61 to change the DC current. Since the specific configuration of the conversion unit 62 is already known, the detailed description thereof will be given. Is omitted.

The lamp 63 is a conventional LED. In the present embodiment, the lamp 63 is installed on the horizontal flange 61a-2 of the body 61a and receives a DC current from the conversion unit 62 to emit light.

For example, as shown in FIG. 2, a method of attaching the jumper wire 40 to the clamp-type current detecting unit 61 of the energization checking unit 60 will be described. First, an outer surface of the body portion 61a is described. When pressing the pressing piece (61d) protruding to the rotating clamp (61c) is fixed to the shaft (not specifically shown) with the fixed clamp (61b) inside the opening by the rotation, the parts connected to each other fall. As the space is naturally created, the jumper wire 40 is inserted into the space between the fixed clamp 61b and the rotation clamp 61c.

When the pressing piece 61d is released from the pressurized state, the rotational clamp 61c is rotated again and connected to the fixed clamp 61b to depress and detain the outer surface of the jumper wire 40.

As described above, when the jumper wire 40 is inserted between the fixed clamp 61b and the rotation clamp 61c of the clamp current detector 61, the induced current generated from the jumper wire 40 is clamped. This is detected, and the conversion unit 62 connected to the clamp current detection unit 61 rectifies and smoothes the AC current input from the clamp current detection unit 61 to change the DC current, and the conversion unit 62 ) Is connected to the lamp 63 receives a direct current from the conversion unit 62 to emit light.

Therefore, the facility manager can visually confirm that the current flows stably along the jumper wire 40 through the lighting 63.

7 is a front sectional view for explaining another operation of the underground distribution line connection device capable of stable distribution according to the present invention, described with reference to this as follows.

As shown in FIG. 7, when tensile force is applied to the distribution line L, each of the distribution line fixing assemblies 20 to which the distribution line L is connected is slid along the guide part 12, and the distribution line fixing is performed. Since the terminal connecting member 53 of the jumper wire replacement assembly 50 fitted to the guide angle 27 of the assembly 20 is also moved together, the terminal connecting rod 53b does not change its position, so that the fixed terminal 22 ) And the variable terminal 24 can be inserted.

In addition, the coil spring 30 is compressed and cushioned when the distribution line fixing assembly 20 is moved by the distribution line L. When the tension force applied to the distribution line L is released, the coil spring 30 mediates an elastic restoring force. The furnace assembly line 20 is returned to the initial state.

8A and 8B are views illustrating a process of replacing a jumper wire by using the underground distribution line connection device capable of stable power distribution according to the present invention.

As shown in FIG. 2, the distribution lines L drawn inwardly through both ends of the housing 10 are respectively connected to a pair of distribution line fixing assemblies 20 which are slidably disposed in the interior of the housing 10. Electrically connected, the distribution line fixing assembly 20 is electrically interconnected via the jumper wire 40, the distribution line (L) is naturally in a state of being electrically connected.

When the lamp 63 of the energization check unit 60 is not lit in the connected state as described above, or when the jumper wire 40 is replaced due to the aging and damage of the jumper wire 40, FIG. 8A and FIG. 8B are used. As shown, when the operator rotates the elevating bolt 51a that is fastened to the nut portion 11a through the handle 51a-1, the elevating bolt 51a is lowered, and the elevating bolt 51a is lowered. As the lowering, the insulating block (51b) rotatably coupled to the elevating bolt (51a) is lowered, and as the insulating block (51b) is lowered, the connecting pipe (52) naturally descends, the connecting pipe (52) Due to the falling of the terminal connecting member 53 electrically connected to the connecting pipe 52 is lowered.

In addition, the terminal connecting rod 53b of the terminal connecting member 53 penetrates through the guide angle 27 and is inserted between the fixed terminal 22 and the variable terminal 24, and the variable terminal 24 is connected to the terminal. The connecting rod 53b is rotated about the shaft pin P by the expanded diameter of the connecting rod 53b. The other end of the variable terminal 24, which is in contact with the jumper terminal 23 due to the rotation of the variable terminal 24, is It is naturally spaced apart from the jumper terminal 23.

In addition, the spring 25 is compressed due to the rotation of the variable terminal 24.

On the other hand, the operator opens the opening and closing portion 13 of the housing 10 in a state in which the distribution line (L) is electrically connected through the terminal connecting member 53 drawn between the fixed terminal 22 and the variable terminal 24. The pressurizing piece 61d of the energization check unit 60 is pressed to release the jumper wire 40 through the gap between the fixed clamp 61b and the rotation clamp 61c. Take out the front end 23 and the damaged jumper wire 40 to the outside, and then replace it with a new jumper front end 23 and the jumper wire 40, and install the jumper wire 40 to the energization check unit 60 Then, the opening and closing part 13 is closed and fixed using the locking part 14.

Then, the operator rotates the elevating bolt 51a through the handle 51a-1 so that the insulating block 51b is raised so that the terminal connecting member 53 drawn between the fixed terminal 22 and the variable terminal 24. Will raise.

As the terminal connection member 53 moves up and down, the compressed spring 25 is restored and the variable terminal 24 is pushed and rotated. Accordingly, the fixed terminal 22 and the jumper terminal 23 are variable terminals ( 24 is electrically connected to each other, and as the pair of distribution lines fixing assembly 20 is electrically connected to the jumper wire 40, the distribution lines L are electrically connected to each other.

According to the present embodiment, since the operation of the jumper wire 40 can be performed in the live state without interrupting electricity of the distribution line L, the operation becomes very convenient.

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.

10: housing 11: case part 12: guide part
13: opening and closing part 14: locking part
20: assembly for securing power line 21: base
22: fixed terminal 23: jumper terminal 24: variable terminal
25: spring 26: support 27: guide angle
30: coil spring 40: jumper wire
50: jumper wire fixing assembly 51: elevating mechanism 52: connector
53: terminal connection member 60: energization check unit
61: clamp current detector 62: conversion unit 63: light

Claims (1)

Distribution lines (L) are respectively introduced through the both ends into the space portion is provided, the front portion is provided with an opening communicating with the inside, the upper surface of the case portion 11 formed integrally with the nut portion (11a), A guide part 12 spaced apart from the bottom surface of the inner both ends of the case part 11 and projecting to face each other, an opening and closing part 13 for opening and closing the opening of the case part 11, and installed in the case part 11 to open and close the part. A housing 10 made of an insulating material composed of a locking part 14 for intermittent opening and closing of the door 13;
Spaced apart to face each other in the case 11, the slide is moved along the guide portion 12, one end is provided with a coupling hole (21a), the other end sides are provided with an elastic receiving groove (21b) A fixed terminal 22 fixed to the base 21 through a fastening means so that the base 21 of the insulating material and the distribution line L drawn inwardly through both ends of the case part 11 can be electrically connected to each other; , The jumper terminal 23 removably inserted into the coupling hole 21a and the pivot pin P are pivotally coupled to the base 21 via the shaft pin P to fix the fixed terminal 22 and the jumper terminal 23. A variable terminal 24 electrically connected to the spring, a spring 25 for elastically supporting the variable terminal 24 in one direction, a supporter 26 installed at the base 21 to support the spring 25, Power distribution consisting of a guide angle 27 is installed on the base 21 to be disposed on the fixed terminal 22 and having a guide hole (27a) Assembly 20 is fixed;
A coil spring 30 inserted into the elastic body accommodating groove 21b to be disposed between the case part 11 and the base 21 to support the base 21 in one direction;
A jumper wire 40 having both ends respectively installed on the jumper terminals 23 of the distribution line fixing assembly 20 to electrically connect the distribution lines L respectively installed in the distribution line fixing assembly 20;
It is fastened to the nut part 11a so as to be lifted and lowered, and a plurality of insulating handles 51a-1 are formed on the outer circumferential surface of the upper end, and the coupling hole 51a-2 opened downward is integrally formed of an insulating material. The elevating bolt 51a and the connecting portion 51b-1 of insulating material rotatably coupled to the coupling hole 51a-2 are installed in the case 11 and moved up and down by the elevating bolt 51a. A lifting mechanism 51 composed of an insulating block 51b,
A connecting pipe 52 made of a conductive material inserted into the insulating block 51b horizontally and integrally formed with the insulating block 51b;
From the other end of the elongation bar 53a, the elongation bar 53a, the elastic bar 53a-1, which is fitted to be movable through both ends of the connection pipe 52 and is in contact with the inner surface of the connection pipe 52, is provided at one end. It extends downward and is fitted into the guide hole 27a of the guide angle 27, and intervenes between one end of the variable terminal 24 and the fixed terminal 22 when descending to electrically connect the fixed terminal 22 and the variable terminal 24 to each other. Of a conductive material having a terminal connecting rod 53b for rotating the variable terminal 24 around the shaft pin P to separate the other end of the variable terminal 24 and the jumper terminal 23 from each other while being connected to each other. A jumper wire replacement assembly 50 composed of a connection member 53;
A fixed clamp installed on the body 61a of the insulating material fixed to the bottom surface of the insulating block 51b and fixed by the fastening means, and fixed to the outer surface of the jumper wire 40 by being fixed to the outer surface of the jumper wire 40 ( 61b) and a rotational clamp 61c, which are integrally formed with the rotational clamp 61c, are provided with a pressing piece 61d for pivoting the rotational clamp 61c so as to be spaced apart from the fixed clamp 61b, and a jumper wire 40. Clamp-type current detection unit 61 receives the induced current generated from the and detects it,
A conversion unit 62 connected to the clamp current detection unit 61 to convert an AC current input from the clamp current detection unit 61 into a DC current and output the same;
Underground power distribution line capable of stable distribution, characterized in that it comprises a; electric current confirmation unit 60 is installed to protrude in the body portion (61a) consisting of a lamp (63) that is turned on by receiving a DC current from the conversion unit (62) Connector.

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