KR101785718B1 - Clamping apparatus for distribution lines - Google Patents

Abstract

The present invention relates to a cable clamping apparatus for a distribution cable comprising a clamp 100 composed of an insulator connecting portion 110, a cable fixing portion 120 and a coil spring 130, and a lid portion 210 and a bellows portion 220 As shown in FIG.
According to the present embodiment, it is possible to easily and easily install mutual assemblies and cables without any separate fastening means as in the prior art, which makes it possible to simplify the assembly and installation work considerably. In particular, Is advantageous in that the deflection phenomenon can be minimized through a coil spring made of a shape memory alloy material.

Description

[0001] Clamping apparatus for distribution lines [0002]

Since the present invention can mutually assemble and install cables without any separate fastening means, it is easy to install and it is possible to minimize the deflection of the cable by pulling the cable when the cable is deformed The present invention relates to a cable clamping apparatus for a distribution cable.

Generally, a cable for distribution is installed by hanging between a pole and a pole, or between a pole and a building using a clamp. When the cable is installed on a pole, the insulation coating of the cable is peeled off and the peeled portion is clamped After clamping, connect the clamp to the suspender installed on the pole.

Such conventional techniques include Korean Patent No. 10-0728320 (transmission and distribution cable clamping device), Korea Patent No. 10-0827000 (wire clamp for distribution line), and Korean Registered Utility Model No. 20-0468582 (Grounding clamp for brass and iron), in which a technique for securing a cable is disclosed in detail.

However, these prior arts have the disadvantage of having to carry a mechanism (driver, spanner, etc.) separate from the operator because the cable must be fixed by using the fastening means provided by itself.

On the other hand, in a hot day like a summer, a cable installed between a pole and a pole is sagged. In the past, there has been no clamping device capable of restricting the sagging of the cable.

1. Korean Registered Patent No. 10-0728320 (Cable clamping device for power transmission and distribution / June 07, 2007) 2. Korean Registered Patent No. 10-0827000 (Wire Clamp for Distribution Line / Apr. 25, 2008) 3. Registered Utility Model No. 20-0468582 in Korea (Grounding Clamp for Welding / 2013.08.16)

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a cable installation method and a cable installation method, Cable clamping device capable of pulling out a cable to minimize deflection of the cable.

According to an aspect of the present invention,

A connecting bar integrally formed on one side of the block and integrally formed on the other side of the block, the connecting bar being integrally formed on the other side of the block, An insulator connecting portion formed of a guide box formed;

A guide bar having a pin moving along the pin guide hole and movably inserted in the guide box, a cable receiving groove in the form of a half truncated cone in which the cable is seated, and a lower end portion of the rubber packing, And a spring receiving groove in which the spring is received, a body having a generally '

A cable receiving groove having a shape corresponding to the cable receiving groove, a packing receiving groove formed at one side of the cable receiving groove and one end of which is detachably fitted to the rubber packing, and a spring receiving groove arranged to face the spring receiving groove, A pressing cover which is rotatably mounted on the body through a hinge to press a cable seated in the cable receiving groove,

A connector mounted on the body and exposed to the cable receiving groove,

A box retainer having a spring inserted into a spring receiving groove, a rod whose lower end portion is inserted into the spring receiving groove and elastically supported by a spring and whose upper end is exposed to the outside,

A horn-shaped socket which is fitted in an end of the cable so as to be electrically connected to the connector and is disposed in the cable seating groove,

A rubber packing which is fitted to the cable so as to restrict the detachment of the cable and detachably installed in the packing seating groove of the body and the cover,

A cable fixing part composed of a cover and a cover which is fitted to surround the body and the pressing cover to restrict the pressing cover from being opened and formed with a through hole so that the rod can be inserted removably;

A clamp having a coil spring of a shape memory alloy material whose one end is fixed to the block of the insulator connecting portion and the other end is fixed to the body of the cable fixing portion and is stretch-

A lid part fitted to the upper surface of the block and the body, respectively;

And a telescopic cover integrally formed between the lid portion and having a bellows portion of rubber material folded or unfolded in accordance with expansion and contraction of the coil spring.

According to the present embodiment, it is possible to easily and easily install mutual assemblies and cables without any separate fastening means as in the prior art, which makes it possible to simplify assembly and installation work considerably and conveniently.

In particular, since the shape of the socket and the shape of the socket (truncated cone) of the body and the pressurizing cover are the same shape (truncated cone shape), when the tensile force acts on the cable and the socket is moved away, The cable is strongly tightened so that the cable can be prevented from being separated from the cable.

In addition, when the cable is subjected to a treatment, the coil spring made of the shape memory alloy material is returned to its original shape by heat, It is pulled by the spring so that deflection of the cable can be minimized.

1 is a perspective view showing an installation state of a distribution cable clamping device according to the present invention;
2 is an exploded perspective view of a power cable clamping device according to the present invention;
3 is an assembled cross-sectional view of a distribution cable clamping device according to the present invention;
FIGS. 4A and 4C are views showing a process of installing a cable fixing unit in a cable clamping apparatus for a distribution cable according to the present invention; FIGS.

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

FIG. 1 is a perspective view showing an installation state of a distribution cable clamping apparatus according to the present invention, FIG. 2 is an exploded perspective view of a distribution cable clamping apparatus according to the present invention, FIG. 3 is a cross- And FIGS. 4A and 4C are diagrams showing a process of installing the cable fixing unit in the cable clamping apparatus for a distribution cable according to the present invention.

1 to 4C, a cable clamping apparatus for a delivery cable according to the present invention is composed of a clamp 100 and a stretchable cover 200. The cable clamping apparatus includes a suspension insulator 2 (not shown) provided on a wire 1 of a pole (not shown) ) Of the cable (L) due to a seasonal change (eg, summer season) is fixed to the cable (L) by means of fastening means (bolts and nuts) The deflection of the cable L can be minimized by pulling the cable L so that a certain degree of tension is maintained.

1 to 4C, the clamp 100 is composed of an insulator connecting portion 110, a cable fixing portion 120, and a coil spring 130. In the present embodiment, a cable (L: The coil spring 130 of the shape memory alloy material is formed and restored by heat during the expansion and contraction of the cable (L: distribution cable) due to seasonal changes (for example, summer season) ) To pull the cable (L: distribution cable) to minimize the deflection function.

The insulator connecting portion 110 is integrally formed with a rectangular parallelepiped block 111 and one side of the block 111 on the left side in FIG. 2, and is connected to the insulator 2 via fastening means (bolts and nuts) A guide bar 121d for guiding the guide bar 121d of the cable fixing part 120 integrally formed on the other side of the block 111 (on the right side in FIG. 2) Box 113 as shown in Fig.

The guide box 113 has a box shape in which the inside thereof is opened in the direction of installation of a cable (L: a distribution cable), and on the top and bottom surfaces thereof, a guide pin 121d- A guide hole 113a is integrally formed.

The cable fixture 120 is integrally formed with a body 121 that is connected to the insulator connection portion 110 in a stretchable manner and is rotatably mounted on the body 121 through a hinge so that the cable L A connector 123 made of metal and electrically connected to a cable (L: a delivery cable, a jumper wire) inserted in the body 121, a body (not shown) A box fixing member 124 which is installed in the body cover 121 and the pressure cover 122 to limit the detachment of the cover transfer member 127 and a box fixing member 124 which is disposed between the body 121 and the pressure cover 122, (L: cable for distribution, jumper wire) disposed between the body 121 and the pressurizing cover 122. The socket 125 is fixed to the end of the cable 121 A rubber packing 126 for covering the body 121 and the pressure cover 122 to prevent the pressure cover 122 from being opened And a cover transfer opening 127 which is fixed by a box fixing hole 124.

A guide bar 121d having a pin 121d-1 movably inserted into the guide box 113 is provided on one side (left side in FIG. 2) of the body 121 as a whole, Respectively.

The body 121 is integrally formed with a cable receiving groove 121a so that the cable L can be seated on the right side (see FIG. 2) and the lower side (see FIG. 2) with respect to the guide bar 121d.

The cable seating groove 121a has a semicircular cross section and has a tapered half-truncated cone-like structure that narrows from one side (connector) to the other (the direction of cable tipping). For reference, And a cable seating groove 122a having the same shape as the cable seating groove 121a of the body 121. [

Accordingly, when the pressing cover 122 is rotated and is brought into contact with the body 121, the cable receiving grooves 121a and 122a are formed into a single truncated cone shape.

The body 121 is formed integrally with a packing seating groove 121b adjacent to the cable seating groove 121a and the pressing cover 122 is also formed in the same manner as the packing seating groove 121b of the body 121 And a packing seating groove 122b having a shape.

Therefore, when the pressure cover 122 is rotated and is brought into contact with the body 121, the packing seating grooves 121b and 122b are formed into a single truncated cone shape.

The body 121 is integrally formed with the spring receiving groove 121c so that the spring 124a of the box fastener 124 can be inserted into the body 121. The pressing cover 122 is also inserted into the spring receiving groove 121c And a spring receiving groove 122c into which the spring 124a is inserted is integrally formed at an opposed position.

The pressure cover 122 is rotatably mounted on the body 121 via a hinge to strongly press the socket 125 in which a cable (L: delivery cable, jumper wire) is inserted.

As described above, the pressing cover 122 is provided with a cable seating groove 121a corresponding to the body 121, a cable seating groove 122a corresponding to the packing seating groove 121b and the spring receiving groove 121c, The groove 122b and the spring receiving groove 122c are integrally formed.

The connector 123 is made of a copper material and is inserted into the body 121 and has both ends exposed to the cable receiving groove 121a of the body 121 and connected to a cable (L: a power cable, a jumper wire) As shown in FIG.

For reference, the end of the connector 123 exposed in the cable seating groove 121a has the same shape as the cable seating groove 121a.

The box fastener 124 is inserted into the spring receiving grooves 121c and 122c by a coil spring 124a inserted into the spring receiving grooves 121c and 122c and a lower end inserted into the spring receiving grooves 121c and 122c by a coil spring 124a, And a rod 124b which is supported and whose upper end is exposed to the outside to fix the cover transfer opening 127.

For example, the rod 124b is inserted into the through hole 127a of the cover transfer port 127 to restrict the detachment of the cover transfer port 217. When the cover transfer port 127 is to be detached If the rod 124b is pushed into the spring receiving grooves 121c and 122c to disengage the rod 124b from the through hole 127a, the cover receiving hole 127 can be easily separated and the spring receiving groove 121c, and 122c protrudes outward due to the restoring force of the compressed spring 124a.

The socket 125 is a frusto-conical metal member that penetrates the inside of the socket 125 and is cut along the longitudinal direction of the socket 125. In this embodiment, the socket 125 is inserted into a cable (L: a distribution cable, a jumper wire) do.

It should be noted that the shape of the socket 125 and the cable seating grooves 121a and 122a have the same shape.

For example, when the socket 125 in which the cable (L: distribution cable, jumper wire) is inserted is pressurized by using the pressure cover 122 in a state where the socket 125 is disposed in the cable seating grooves 121a and 122a, The cable 122 is pressed against the body 121 and the connector 123 and the cable L are connected to each other at the same time : A distribution cable, a jumper wire) are electrically interconnected via a socket 125.

When the cover transferring opening 127 is inserted in the state where the pressing cover 122 is in contact with the body 121, the pressing cover 122 is naturally fixed to the body 121 and the cable L : A cable for distribution, a jumper wire) is also fixed through the socket 125. [

Particularly, since the shape (truncated cone shape) of the socket 125 of the body 121 and the cable seating grooves 121a, 122a of the pressing cover 122 is the same shape (truncated cone shape) The cable 125 is tightly fastened to the cable receiving grooves 121a and 122a while the socket 125 is moved together with the cable (L) L: a distribution cable, a jumper wire) can be prevented from originating.

One end of the rubber packing 126 is detachably inserted into the packing seating grooves 121b and 122b of the body 121 and the pressing cover 122 while being inserted into a cable (L:

In addition, the inner circumferential surface of the rubber packing 126 is provided with projections and depressions to strongly press the outer surface (circumferential surface) of the cable (L: cable for distribution, jumper wire) Jumper lines) can be restricted.

That is, according to the present invention, when a tensile force acts on a cable (L: a distribution cable, a jumper wire) to be released to the outside, it is limited primarily through the body 121, the pressure cover 122 and the socket 125 (L: distribution cable, jumper wire) can be more completely limited as the rubber packing 126 restricts it.

The cover transfer opening 127 is fitted so as to enclose the body 121 and the pressure cover 122 to restrict the opening of the pressure cover 122.

Particularly, through-holes 127a through which the rods 124b are removably inserted are integrally formed in the cover transfer port 127.

For example, when the rod 124b is inserted into the through hole 127a, the cover transfer port 127 is maintained in a fixed state, so that the release of the cover 124b to the outside is limited.

As described above, since the present invention can easily fix a cable (L: a distribution cable, a jumper wire) without a separate fastening means as well as a mutual assembly, the installation work is advantageously simplified and convenient.

One end of the coil spring 130 is fixed to the block 111 of the insulator connecting part 110 and the other end of the coil spring 130 is fixed to the body of the cable fixing part 120 121 and stretched and deformed.

As an example, a cable (L: distribution cable) is sagged on a hot day like a summer season.

Even if a cable (L: distribution cable) is sagged in this way, the coil spring 130 made of a shape memory alloy material is returned to its original shape by heat, so that the cable (L: distribution cable) , So that deflection of the cable (L: distribution cable) can be minimized.

Since the principle of the shape memory alloy material is the well-known technology, a detailed description thereof will be omitted.

1 to 3, the stretchable and contractible cover 200 includes a lid 210 and a bellows portion 220 and is installed on the clamp 100 to be stretchable.

The lid 210 is made of a synthetic resin material and is inserted through the upper surface of the insulator connecting portion 110 and the cable fixing portion 120, respectively.

The bellows portion 220 is made of a rubber material and is disposed between the lids 210 to be integrated with the lid portion 210.

When the guide bar 121d of the cable fixing part 120 provided in the guide box 113 of the insulator connecting part 110 is moved along the guide box 113 and is slowly pulled out, And at the same time, the bellows portion 220 is unfolded.

Conversely, when the guide bar 121d is moved along the guide box 113 and inserted gradually, the coil spring 130 is reduced, and at the same time, the bellows portion 220 is folded.

The installation and operation of the cable of the present invention having the above-described structure will be described as follows.

First, a process of installing a cable (L: distribution cable, jumper wire) to the cable fixing hole 120 of the clamp 100 will be described.

4A to 4C, the rubber packing 126 and the socket 125 are sequentially fitted to the cable (L: distribution cable, jumper wire), and then the rubber packing 126 is attached to the body 121 And the socket 125 is disposed in the cable seating groove 121a.

When the pressing cover 122 provided on the body 121 is closed by the hinge in the state as described above, the cable receiving groove 122a of the pressing cover 122 is brought into contact with the peripheral surface of the socket 125 So that the cable (L: distribution cable, jumper wire) is strongly caught in the socket 125. As a result,

In addition, a rubber packing 126 is inserted into the packing seating groove 122b of the pressure cover 122.

When the body 121 and the pressing cover 122 are fitted to cover the body 121 and the pressing cover 122 using the cover transfer port 127 in the assembled state as described above, it is possible to restrict the pressing cover 122 from being opened by the cover transfer port 127 .

In the process of inserting the cover transfer port 127, the rod 124b of the box fixing port 124 is inserted into the through hole 127a of the cover transfer port 127, Is naturally fixed with the body 121 and the pressure cover 122 wrapped around.

When the above assembly is completed, the elastic cover 200 may be installed in the clamp 100.

As described above, the present invention has the advantage that the assembling and installation work can be simplified and simplified because mutual assembly and cable (L: cable for distribution, jumper wire) can be easily installed without any separate fastening means as in the prior art.

On the other hand, a cable (L: distribution cable) is sagged on a hot day like a summer season. When a cable (L: distribution cable) is treated like this, a coil spring made of a shape memory alloy material The cable 130 is returned to its original shape by the heat, so that the cable (L: distribution cable) is pulled by the coil spring 130, so that deflection of the cable (L: distribution cable) can be minimized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limited to the specific embodiments set forth herein; rather, .

100: clamp 110: insulator connection 111: block
112: connecting bar 113: guide box 113a: pin guide ball
120: Cable fixing part 121: Body 121a: Cable mounting groove
121b: packing seating groove 121c: spring receiving groove 121d: guide bar
121d-1: pin 122: pressure cover 122a:
122b: packing seating groove 122c: spring receiving groove 123: connector
124: box fixing hole 124a: spring 124b: rod
125: Socket 126: Rubber packing 127: Cover detent
127a: through hole 130: coil spring 200: stretch cover
210: lid 220:

Claims (1)

A connecting bar 112 integrally formed on one side of the block 111 and rotatably mounted on a suspending insulator 2 fixed to the fastener 1 and a connecting bar 112 integrally formed on the other side of the block 111, An insulator connecting portion 110 formed of a guide box 113 having a pin guide hole 113a formed in the upper and lower sides thereof in a direction in which the cable L is installed in a horizontal direction;
A guide bar 121d having a pin 121d-1 that moves along the pin guide hole 113a and movably inserted into the guide box 113, a semi-truncated conical cable seating groove 121d on which the cable L is seated, A packing seating groove 121b which is formed at one side of the cable seating groove 121a and into which the lower end of the one end of the rubber packing 126 is detachably fitted and a spring receiving groove 121c in which the spring 124a is received, A body 121 having an overall 'A' shape,
A cable receiving groove 122a having a shape corresponding to the cable receiving groove 121a, a packing receiving groove 122b formed at one side of the cable receiving groove 122a and having one end upper end of the rubber packing 126 detachably fitted, And a spring receiving groove 122c disposed to face the spring receiving groove 121c so as to be rotatable with respect to the body 121 via a hinge so as to press the cable L seated in the cable receiving groove 121a, A pressurizing cover 122,
A connector 123 inserted in the body 121 and exposed to the cable receiving groove 121a,
A spring 124a inserted into the spring receiving grooves 121c and 122c and a rod 124b whose lower end is inserted into the spring receiving grooves 121c and 122c and elastically supported by the spring 124a and whose upper end is exposed to the outside, A box fastener 124 composed of a box-
A socket 130 on a horn-shaped socket which is fitted to the end of the cable L so as to be electrically connected to the connector 123 and is disposed in the cable seating groove 121a and is pressed by the pressurizing cover 122 to wind the end of the cable L, (125)
A rubber packing 126 which is fitted in the cable L to restrict the disengagement of the cable L and which is removably installed in the packing seating grooves 121b and 122b of the body 121 and the cover 122,
A cover transfer opening 127 in which a through hole 127a is formed so as to allow the rod 124b to be inserted and removed so as to restrict the expansion of the pressure cover 122 by being fitted to surround the body 121 and the pressure cover 122, A cable fixing part 120 composed of a plurality of cables;
A clamp having a coil spring 130 of a shape memory alloy material whose one end is fixed to the block 111 of the insulator connecting portion 110 and the other end is fixed to the body 121 of the cable fixing portion 120 to be stretched and deformed 100):
A lid 210 fitted to the upper surface of the block 111 and the body 121, respectively;
And a telescopic cover (200) integrally formed between the lid part (210) and having a bellows part (220) of rubber material folded or unfolded according to expansion and contraction of the coil spring (130) Clamping device.

Images