CN204045767U - A kind of cable termination ground protection pincers - Google Patents

Abstract

A kind of cable termination ground protection pincers; comprise two clamp handles and two jaws; this two jaws opposite side is formed with arc electrical contact face; two jaw tops are bent outwardly all at a certain angle and are formed with the first binding clip and the second binding clip; two first binding clip opposite sides and the two second binding clip opposite sides of this two jaw are all formed with arc electrical contact face, and two jaws are at least connected with a wiring circle.Be applicable to 10kV and following circuit connection termination or bus-bar earthing, to the cylinder of different size and plate body wiring, ground connection can be installed; Also spring is set, makes electrical connection more reliable for supplementary pressure, improve maintainer's fail safe, reduce because of the unexpected charged casualties rate caused of cable.

Description

A kind of cable terminal grounding protection clamp

technical field

The utility model relates to the field of power distribution equipment tools, in particular to a cable terminal grounding protection clamp.

Background technique

At present, when the power switchgear is overhauled, there is no grounding protection for the cable terminal. In the traditional maintenance process, only the isolation switch and the busbar are grounded, and the cables entering and leaving the switch cabinet are not grounded. If the cables are charged, personal safety accidents may occur.

The high-voltage cable terminal adopts heat-shrinkable or cold-shrinkable insulation materials. When the copper or aluminum nose is connected to the equipment with bolts, there is less conductive metal contact surface left, and the cable diameters are different. Conventional temporary three-phase short-circuit grounding The thread is difficult to install and tends to fall off. When the cable joint bolt is removed, the grounding switch or grounding wire protection will be separated at this time, and there is a danger of induction or reverse power transmission. At present, there is no grounding protection clamp specially used for grounding the cable terminal when overhauling. In view of this situation, it is necessary to design a grounding protection pliers that is grounded first when the cable terminal is disassembled, and is used for power system maintenance.

Utility model content

The main purpose of the utility model is to overcome the prior art and propose a safe, reliable, and easy-to-operate cable terminal grounding protection clamp.

The utility model adopts the following technical solutions:

A grounding protection pliers for cable terminals, including two pliers handles and two pliers mouths, arc-shaped electrical contact surfaces are formed on the opposite sides of the two pliers mouths, and the top ends of the two pliers mouths are bent outward at a certain angle to form a first terminal clamp and a second clamp. Two connecting clips, the opposite sides of the two first connecting clips of the two pliers mouths are provided with serrated contact surfaces, the opposite sides of the two second connecting clips are formed with arc-shaped electrical contact surfaces, and the two pliers mouths are connected with at least one connecting coil.

Preferably, the tops of the two pliers handles are respectively formed with cavities for accommodating the two pliers mouths, and the pliers mouths are hinged to the side walls of the corresponding cavities. spring to supplement the pressure.

Preferably, the connecting coil passes through the pliers handle and is integrally formed with the pliers mouth.

Preferably, the arc-shaped electrical contact surface is a zigzag arc-shaped electrical contact surface.

As can be seen from the above description of the utility model, compared with the prior art, the utility model has the following beneficial effects:

1. The grounding pliers of the present invention have a serrated arc-shaped electrical contact surface, which is suitable for grounding of circuit terminals or busbars of 10KV and below, and can be installed and grounded for connection of cylinders and plate-shaped bodies of different sizes;

2. The utility model also has a spring on the side wall of the pliers mouth, which is used to supplement the pressure to make the electrical connection more reliable, improve the safety of the maintenance personnel, and reduce the casualty rate caused by the accidental electrification of the cable;

3. The three-phase installation and operation time of the grounding clamp of the utility model is less than 1 minute, which is convenient for construction and improves the maintenance efficiency;

4. The impact on the removal and installation of terminals such as cables is zero.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is a side view of the utility model;

Fig. 3 is the perspective view of the utility model;

Fig. 4 is the perspective view (partial section) of the utility model;

Among them: 1, pliers handle; 2, pliers mouth; 3a, first connecting clip; 3b, second connecting clip; 4, connecting coil; 5, spring; A is the first arc-shaped electrical contact surface; Contact surface; C is the second arc-shaped electrical contact surface.

Detailed ways

The utility model will be further described below through specific embodiments.

Referring to Figures 1 to 4, a cable terminal grounding protection pliers includes two pliers handles 1 and two pliers mouths 2, the tops of the two pliers handles 1 are respectively formed with cavities for accommodating the two pliers mouths 2, and the two pliers mouths 2 respectively hinged with the corresponding cavity side walls. The opposite sides of the two pliers mouths 2 are concavely formed with a first arc-shaped electric contact surface A in a saw-tooth shape. The top ends of the two jaws 2 are bent outward at a certain angle to form a first terminal clamp 3a and a second terminal clamp 3b. The opposite sides of the two first connecting clips 3 a of the two jaws 2 are provided with serrated electrical contact surfaces B, and the opposite sides of the two second connecting clips 3 b are recessed to form a second arc-shaped electrical contact surface C. The arc electrical contact surfaces are all zigzag arc electrical contact surfaces.

It also includes at least one connecting coil 4 , which passes through the pliers handle 1 and is integrally formed with the pliers mouth 2 .

Further, a spring 5 or a retaining ring is stretched between the inner wall of the cavity and the side wall of the pliers mouth 2 to supplement the pressure, so that the electrical contact is more reliable.

The utility model is suitable for the grounding of circuit terminals or busbars of 10kV and below. The first arc-shaped electrical contact surface A and the second arc-shaped electrical contact surface C are used for electrical contact with the round tube part of the terminal. The electrical contact surface B makes electrical contact with the plate portion of the terminal. The grounding clamp of the utility model is easy to operate, reliable in grounding, occupies a small space, does not affect the disassembly and installation of the cable terminal, improves work efficiency for maintenance personnel, and provides protection for construction safety.

The above is only a specific embodiment of the utility model, but the design concept of the utility model is not limited thereto, and any non-substantial modification of the utility model by using this concept should be an act of violating the protection scope of the utility model.

Claims (4)

1. cable termination ground protection pincers; comprise two clamp handles and two jaws; it is characterized in that: this two jaws opposite side is formed with arc electrical contact face; two jaw tops are bent outwardly all at a certain angle and are formed with the first binding clip and the second binding clip; two first binding clip opposite sides of this two jaw are provided with serrated contact face; two second binding clip opposite sides are formed with arc electrical contact face, and two jaws are at least connected with a wiring circle.

2. a kind of cable termination ground protection pincers as claimed in claim 1; it is characterized in that: described two clamp handle tops are formed with the cavity holding described two jaws respectively; this jaw and respective chamber side walls hinged, also opening top between this cavity inner wall and described jaw sidewall has spring with supplementary pressure.

3. a kind of cable termination ground protection pincers as claimed in claim 1, is characterized in that: described wiring circle is one-body molded with jaw through described clamp handle.

4. a kind of cable termination ground protection pincers as claimed in claim 1, is characterized in that: described arc electrical contact face is zigzag arc electrical contact face.