KR101334078B1 - Nipper device for separation low-voltage cable of transformer - Google Patents

Abstract

The present invention relates to a tongs device for separating a low pressure cable of a transformer, capable of preventing electric safety accidents happened during a clamping work and improving work convenience. The present invention allows a worker to selectively perform a separation work in a blackout state or an uninterrupted state by improving a structure of the tongs device for clamping the low pressure cable and a connection cable and separating the same from a connection terminal. Furthermore, the present invention can reduce production costs and improve the convenience in manufacturing processes by simplifying components.

Description

Nipper device for separation low-voltage cable of transformer}

The present invention relates to a tong device for separating the low voltage cable of the ground transformer, and more specifically, to improve the structure of the tong device for separating the low voltage cable of the ground transformer for clamping the low voltage cable and the connection cable to separate them from the connection terminal. Depending on the selection, it is possible to perform the separation work in the state of power failure or uninterruption, and by simplifying its components, it reduces the convenience of the manufacturing process and product production cost, and also varies depending on the capacity and type of the ground transformer installed in the field. The ground that can easily clamp the low-voltage cable and the connection cable regardless of the gap between the low-voltage cable and the connection cable with a gap, improves convenience in operation, and prevents electrical safety accidents that occur during clamping. It relates to a tong device for separating the low voltage cable of the transformer.

In general, the underground distribution line provides 22.9KV special high voltage (primary side) supplied through power transmission lines from power plants when power is supplied to various facilities for home or industrial use. Ground transformer is used as a means to drop the voltage to supply to the car.

Among these ground transformers, an elbow connecting member is connected to the end of the primary high voltage cable to which the extra high voltage is supplied, and the elbow connecting member is connected to the primary side bushing.

In addition, a connection terminal is connected to the end of the secondary-side low-voltage cable to which low-pressure is supplied, and this connection terminal is configured to be connected to the secondary-side bushing.

Here, the secondary-side connection terminal to which the low voltage cable is connected is divided into an integral type in which the bushing is integrally coupled and a separate type that is screwed into the bushing.

In addition, the ground transformer installed in this way should be replaced with a transformer that normally operates when an abnormality (breakdown) occurs in the transformer due to aging or overload. At this time, the special high voltage cable and the low voltage cable are separated from the primary and secondary bushings. In the form, the ground transformer will be replaced.

In particular, the method of replacing the transformer in a temporary power failure state in which the power of the transformer is cut off when the ground transformer is disconnected, and the transformer in a state in which power is continuously supplied to the consumer by continuously connecting the power of the transformer in a live state There is an uninterruptible replacement method.

That is, in the case of replacing the transformer with the uninterruptible state in the live state, the secondary-side low-voltage cable must be continuously connected to the cable on the customer side.

However, in the related art, a separate device for safely separating the low-voltage cable is not provided, and thus there is a problem in that workability is significantly lowered as well as work safety.

Accordingly, in recent years, various technologies for safely separating such a low-voltage cable have been proposed, and the following is a description of an example (registration patent 10-0882790).

This, the conventional low-voltage cable disconnection tongs connection device of the ground transformer is provided with a plurality of binding holes 111 and guide holes 113 on the inside, the binding piece 110 with a grid-shaped handle 115 protruding from the top;

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It is located in front of the bundling piece 110 so as to accommodate and connect the secondary low voltage cable 10 and the connection cable 20, and the secondary low voltage cable 10 and the connection cable 20 are inserted at both ends. A first guide opening (122) having a first receiving groove (121) opened to the front is formed to protrude, and a first guide opening having a forward spiral hole (123) on the same axis as the guide hole (113) ( 124) is formed protruding, the connection protrusions (T) of the conductors connected by the electric wire (L) built in the inside of each of the first receiving groove 121 is provided, the upper and lower portions of each of the first connection port (122) The first guide plate 125 is formed, the first connecting plate is fixed to the first closing piece 127 having a first inner hole 126 having a smaller inner diameter on the upper portion of the first guide groove 125 ( 120);

Located on the upper and lower portions of the first connection plate 120 so that the secondary low-voltage cable 10 and the connection cable 20 can be received and connected, so that the binding piece 110 can be fastened to the middle rear surface. A second bolt opening (B) that is inserted into the binding hole (111) and whose ends are nut-fastened is provided, and the second housing opened rearwardly so that the secondary low voltage cable (10) and the connecting cable (20) are inserted at both ends. A second connector 132 having a groove 131 is formed to protrude, and a connection protrusion T of a conductor connected by an electric wire L installed inside the second receiving groove 131 is provided. A second guide groove 135 is formed in the second connection hole 132 on the side of the first connection hole 122, and a second long hole 136 having an inner diameter smaller than this is formed on the upper portion of the second guide groove 135. A pair of second connection plates 130 having a second fixed piece 137 installed and fixed;

A second guide sphere protruding from any one of the second connection plates 130 of the pair of second connection plates 130 and having a reverse spiral hole 141 on the same axis as the guide hole 113 inside. (140);

Sliding and moving the first connection plate 120 and the second connection plate 130, the secondary side low voltage cable 10 and the connection cable (located in the first receiving groove 121 and the second receiving groove 131) ( 20) a rotation wheel 151 is positioned in a space between the first connection plate 120 and the second connection plate 130 so that the pressing and fixing operation can be performed, and before and after the rotation wheel 151 A spiral bar 153, which is bolted to the forward spiral ball 123 and the reverse spiral ball 141, is protruded on the surface, and has a larger outer diameter than the spiral bar 153 at the ends of the spiral bars 153. Width adjustment shaft 150 having a bolt-off mechanism 155 is bolted; And

Both ends are inserted and connected between the first guide groove 125 and the second guide groove 135 which are symmetrical to each other so that the sliding operation of the first connection plate 120 and the second connection plate 130 can be smoothly performed. And, both ends of the first long hole 126 and the second long hole 136 having a larger outer diameter bearing 161 is configured to include a guide pin 160 is forcibly connected.

Accordingly, the low voltage cable and the connection cable are pressurized and fixed by the first connection plate and the second connection plate slidingly moved by the width adjustment shaft so that they can be separated from the connection terminal.

However, the conventional clamping device for separating the low-voltage cable from the ground transformer has a problem in that the structure of the components performing the operation of pressing and fixing the low-voltage cable and the connection cable is complicated, and thus a high manufacturing cost is required.

In addition, the conventional clamping device for separating low-voltage cables has the convenience of being able to easily fix and pressurize regardless of the thickness of the low-voltage cables and connection cables due to its structural characteristics, but takes risks when the gap between the low-voltage cables and connection cables occurs. Since there was a need to write and manually space the gap between the low-voltage cable and the connecting cable, there was a problem of being exposed to inconvenience and danger in use.

The present invention has been made to solve the problems as described above, the purpose of which is to clamp the low-voltage cable and the connection cable to separate them from the connection terminal. Separation work can be performed in a blackout or uninterrupted state, and by simplifying its components, it reduces the convenience of the manufacturing process and product production cost, and has different intervals depending on the capacity and type of the ground transformer installed in the field. Low voltage of the ground transformer that can improve the convenience of work and prevent electrical safety accidents occurring during clamping by making it easy to clamp the low voltage cable and the connection cable regardless of the distance between the low voltage cable and the connecting cable. It is to provide a tong device for cable separation.

Means of the present invention for achieving the above object,

In the clamping device for separating the low-voltage cable of the ground transformer for clamping the secondary side low-voltage cable and the primary-side connection cable to separate them from the connection terminal for replacement of the ground transformer,

The front is divided into both sides and opened, but incision grooves are formed in front of both sides, a gear panel is installed at the center of the installation space located inside, and the gear panel can be transferred back and forth on the outer rear. The main body is equipped with a large insulation pivot lever and an insulated handle:

The rear is provided with an interlocking gear installed in the installation space portion of the main body so that it can be rotated by the gear panel, and the interlocking gear is integrally formed with a clamp having a fixed arc-shaped fixing groove in the front. A guide groove having an energizing plate formed in the longitudinal direction is formed on an adjacent inner surface, a transfer screw is built up in the guide groove, and the transfer screw is pressurized with an energizing plate and a resilient connector for energization. A pressurized clamp having an arcuate fixed groove is integrally installed, and a small insulating pivoting lever capable of transferring the pressurized clamp in the forward and backward directions in the guide groove by rotating the transfer screw in the outer front side. Two sets of pair of tongs bars are provided and are provided in the installation groove formed on the inner surface adjacent to the guide groove, and the energizing plate and the energizing piece capable of being energized are attached to the inner surface: and

It is characterized in that it is connected to the detachable fastener located in the front center of the main body through a spring hinge portion, and both sides are located in the installation groove and include a power supply piece and a jump hinge to enable power.

On the other hand, the detachable fastener is installed in the lower and lower grooves formed in the main body at regular intervals on the lower fixture and the lower fixture, which is fixedly installed at the lower center of the front body, for elastic springs installed in the upper and lower grooves. It is characterized in that it is formed of an upper fixture to be burnt.

As described above, the present invention is a power failure or uninterruption depending on the operator's choice through the improvement of the structure of the clamping device for separating the low voltage cable of the ground transformer that clamps the secondary low voltage cable and the primary connection cable and separates them from the connection terminal. Separation can be performed in a state, and by simplifying the components, it is possible to reduce convenience of a manufacturing process and product production cost.

In addition, it is possible to easily clamp the low-voltage cable and the connection cable regardless of the distance between the low-voltage cable and the connection cable having different intervals depending on the capacity and type of the ground transformer installed on the site, thereby improving the convenience of work and at the same time It is effective in preventing electric safety accidents occurring during clamping.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be implemented by anyone who has ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, such changes are within the scope of the claims.

1 is an exploded perspective view showing a tong device for separating low voltage cables of a ground transformer according to the present invention;
Figure 2 is a perspective view showing a tong device for separating the low voltage cable of the ground transformer according to the present invention,
Figure 3 is an enlarged cross-sectional view showing a main portion of the forceps device for separating the low voltage cable of the ground transformer according to the present invention,
Figure 4a, Figure 4b is a plan view showing the operating state of the clamping device for separating the low-voltage cable of the ground transformer according to the present invention.

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

For reference, in the description of the present invention, when it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description is omitted.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice.

Therefore, of course, the definition should be made based on the contents throughout the present specification.

The tong device for separating the low voltage cable of the ground transformer of the present invention, the front side is divided into both sides and opened, but incision grooves 102 are formed in front of both sides, and in the center of the installation space 104 located inside. The gear panel 106 is installed, and the main body 100 provided with a large insulating rotation lever 108 and an insulating handle 110 capable of transferring the gear panel 106 forward and backward on the outer rear surface. )Wow,

At the rear, interlocking gears 202a and 202b are installed in the installation space portion 104 of the main body 100 so as to be rotatable by the gear panel 106, and the interlocking gears 202a and 202b are provided. ) Is formed integrally with the clamps 206a and 206b in which the fixed arc-shaped fixing grooves 204a and 204b are formed in the front, and the inner surfaces adjacent to the clamps 206a and 206b are provided on the upper surface. Guide grooves 210a and 210b in which the energizing plates 208a and 208b are formed in the longitudinal direction are formed, and the transfer screws 212a and 212b are provided in the guide grooves 210a and 210b. ) Is installed, and the conveying screws 212a and 212b are pressurized semi-arc fixing grooves 216a provided with energizing plates 208a, 208b and resilient connectors 214a, 214b. Pressing clamps 218a and 218b are integrally formed with, 216b, and are connected to the outside, and rotating the conveying screws 212a and 212b in the outer front to pressurize the clamps 218a and 218b. Is provided with small insulator rotation levers 220a and 220b capable of transferring the guide grooves 210a and 210b in the front and rear directions, adjacent to the guide grooves 210a and 210b. Two pairs of one pair of clamps are attached to the inner surface of the installation grooves 222a and 222b formed on the inner surface, and the energizing plates 208a, 208b and the energizing pieces 224a and 224b, which can be energized. Bar (200a), (200b),

Is connected to the detachable fastener 112 located in the front center of the main body 100 through a spring hinge portion 302, both sides are located in the installation groove (222a), (222b), the energizing piece (224a), It is configured to include a jump hinge (300) connected to the (224b) to enable energization.

On the other hand, the detachable fastener 112 is a lower and fixed groove 114 installed in the lower center of the front center of the main body 100 and an upper and lower grooves formed in the main body 100 with a predetermined interval on the upper side of the lower fixing 114. It is inserted into the installation 116, but is formed of an upper fixture 120 that is supported for the elastic spring 118 installed in the lifting and descending grooves 116.

Hereinafter, the operation according to the present invention will be described.

The present invention configured as described above, it is possible to easily clamp the low-voltage cable (L) and the connection cable (N) having different intervals according to the capacity and type of the ground transformer installed in the field regardless of the interval.

That is, after taking the state in which the small insulating material rotating levers 220a and 220b are rotated in the reverse direction to move to the rear end side of the pressure clamps 218a and 218b that were in contact with the clamps 206a and 206b. , Clamp bar (200a), (200b) clamps formed at the ends of the clamps (206a), (206b) fixed arc-shaped fixing grooves (204a), (204b) the low voltage cable (L) and the connection cable (N) to achieve the clamping ) The rotation of the large insulating material rotation lever 108 formed on the outer rear surface of the main body 100 is maintained in a forward or reverse direction so that the distance is maintained by a separation distance.

Here, the rotation width of the large insulating material rotating lever 108 in the forward or reverse direction to adjust the opening width of the tip of the forceps bars 200a and 200b is the positive direction of the large insulating material rotating lever 108 Or the gear panel 106 installed in the installation space portion 104 of the main body 100 by the reverse rotation while moving forward and backward, interlocking gears 202a of forceps bars 200a and 200b engaged on both sides, This is because 202b is rotated in the forward or reverse direction.

Subsequently, the small insulator rotation levers 220a and 220b formed on the outer front side of the clamps 206a and 206b are rotated in the forward direction to clamp the pressing clamps 218a and 218b ( When moving to the side 206a), 206b, the low voltage cable L and the connection cable N are clamped firmly.

Here, the pressurized clamps 218a and 218b that are moved by the rotation of the small insulation rotation levers 220a and 220b are rotated by the small insulation rotation levers 220a and 220b. This is because the axial movements of the press clamps 218a and 218b along the guide grooves 210a and 210b are made by the transfer screws 212a and 212b interlocked by.

In addition, it is possible to perform a separation operation in a power failure or uninterrupted state by the operator's selection.

That is, when the jump hinge 300 is connected to the detachable fastener 112 located at the front center of the main body 100, the detachable operation can be performed in an uninterrupted state. There will be.

Here, the uninterrupted state when the jump hinge 300 is connected and installed to perform the separation operation in an uninterrupted state is because the energized state is maintained as follows.

That is, the two clamps 206a, 206b and the pressurized clamps 218a, 218b constituting two sets of one pair of clamp bars 200a, 200b rotatably connected to the main body 100 are installed. When the low voltage cable (L) and the connection cable (N) are clamped through, the low voltage cable (L) and the connection cable (N) are in close contact with the elastic connectors (214a), (214b) and the elastic connector (214a), The energizing plates 208a, 208b connected to (214b) and the energizing pieces 224a, 224b connected to the energizing plates 208a, 208b and the energizing pieces 224a, 224b. This is because an electrically energized state is maintained between the low voltage cable L and the connection cable N by the jump hinge 300.

On the other hand, the jump hinge 300 to enable the energization as described above is installed connected to the detachable fastener 112 formed in the center of the front of the main body 100 through the spring hinge portion 302, the tong bar when adjusting the width The hinge operation corresponding to the gap between (200a) and (200b) is achieved, thereby making it possible to implement a stable energization state.

That is, both sides of the jump hinge 300 is maintained by a spring hinge portion 302 to always maintain a tangy state to achieve an outwardly spread state, and both sides of the jump hinge 300 through which such a gripping force is transmitted are installed in the groove This is because the contact state of the energizing pieces 224a and 224b installed in (222a) and (222b) is always maintained.

100: body 102: incision groove
104: installation space 106: gear panel
108: large insulation rotation lever 110: insulated handle
112: Removable fixture 114: Lower fixture
116: up/down groove 118: elastic spring
120: upper fixture
200a,200b: Forceps 202a,202b: Interlocking gear
204a,204b: Fixed part arcuate fixing groove 206a,206b: Clamp
208a, 208b: energizing plate 210a, 210b: guide groove
212a,212b: Transfer screw 214a,214b: Elastic connector
216a, 216b: Pressing part semi-arc fixing groove
220a,220b: Small insulating material rotation lever 222a,222b: Installation groove
224a, 224b: energized flights
300: jump hinge 302: spring hinge

Claims (2)

In the clamping device for separating the low-voltage cable of the ground transformer for clamping the secondary side low-voltage cable and the primary-side connection cable to separate them from the connection terminal for replacement of the ground transformer,
The front is divided into both sides and opened, but incision grooves are formed in front of both sides, a gear panel is installed at the center of the installation space located inside, and the gear panel can be transferred back and forth on the outer rear. The main body is equipped with a large insulation pivot lever and an insulated handle:
The rear is provided with an interlocking gear installed in the installation space portion of the main body so that it can be rotated by the gear panel, and the interlocking gear is integrally formed with a clamp having a fixed arc-shaped fixing groove in the front. A guide groove having an energizing plate formed in the longitudinal direction is formed on an adjacent inner surface, a transfer screw is built up in the guide groove, and the transfer screw is pressurized with an energizing plate and a resilient connector for energization. A pressurized clamp having an arcuate fixed groove is integrally installed, and a small insulating pivoting lever capable of transferring the pressurized clamp in the forward and backward directions in the guide groove by rotating the transfer screw in the outer front side. Two pairs of pair of tongs bars are provided and are provided in the installation grooves formed on the inner surface adjacent to the guide grooves, and the energizing plate and the energizing piece capable of being energized are attached to the inner surface: and
A low-voltage cable of a ground transformer, which is connected to a detachable fastener located at the center of the front of the body through a spring hinge part, and includes both sides of the installation groove and a jump hinge that enables energization. Separation forceps. According to claim 1;
The detachable fastener is installed in the upper and lower grooves formed in the main body with a certain interval between the lower fixture and the lower fixture fixedly installed at the lower center of the front center of the main body, and is supported for elastic springs installed in the upper and lower grooves. A tong device for separating a low voltage cable from a ground transformer, characterized in that it is formed by an upper fixture.

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