CN204088982U - A kind of ground protection pincers - Google Patents

Abstract

A ground protection pliers, comprising two hinged pliers handles, and two pliers heads, the opposite sides of the two pliers handles are provided with grooves extending along the length direction thereof, and the two pliers heads are respectively embedded in the grooves of the two pliers handles Inside, the middle parts of the two pliers heads are hinged to the corresponding pliers handles through pins, and the upper and lower ends of the two pliers heads are provided with a first terminal clamp and a second terminal clamp that bend outward along the vertical direction of the pliers handles, and the two second terminal clamps are The opposite side of the clip is provided with a serrated arc-shaped electrical contact surface. The grounding clamp of the utility model is easy to operate, reliable in grounding, takes up little space, does not affect the disassembly and installation of cable terminals, improves work efficiency for maintenance personnel, and provides protection for construction safety.

Description

A ground protection clamp

technical field

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

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

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 knife switch or grounding wire protection is 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 with a grounding protection clamp that is grounded first when the cable terminal is disassembled, and is used for power system maintenance. the

Utility model content

The main purpose of the utility model is to provide a safe, reliable, and easy-to-operate grounding protection clamp. the

The utility model adopts the following technical solutions:

A kind of ground protection pliers, comprising two hinged pliers handles, characterized in that: it also includes two pliers heads, the opposite sides of the two pliers handles are provided with grooves extending along the length direction thereof, and the two pliers heads are respectively embedded in the two pliers In the groove of the shank, the middle parts of the two pliers heads are hinged to the corresponding pliers handles through pins, and the upper and lower ends of the two pliers heads are provided with a first terminal clamp and a second terminal clamp that bend outward along the vertical direction of the pliers handles. The opposite sides of the two second clamps are provided with serrated arc-shaped electrical contact surfaces. the

Preferably, a torsion spring is also included, and the torsion spring is arranged at the hinge of the two pliers handles. the

Preferably, the bottoms of the two pliers handles are respectively connected with wires. the

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 this utility model are provided with 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 pliers head and the pliers handle of the utility model are hinged by pins. When the two first wires are clamped to clamp the terminal tube, because the pliers head and the pliers handle are hinged, the lower ends of the side walls of the two pliers heads are in close contact, and the reaction acts on the two first wires. One terminal clamp makes the contact between the two first terminal clamps and the terminal panel more closely; when the two second terminal clamps clamp the terminal panel, because the pliers head and the pliers handle are hinged, the upper ends of the side walls of the two pliers heads are in close contact, which reacts on the two clamps. The second terminal clamp makes the contact between the two second terminal clamps and the terminal panel more closely;

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. the

Description of drawings

Fig. 1 is the three-dimensional structural diagram of the present utility model;

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

Fig. 3 is a side view of the utility model;

Fig. 4 is a schematic diagram of the utility model;

Among them: 1, pliers handle; 11, groove; 2, pliers head; 2a, first terminal clamp; 2b, second terminal clamp; 3, pin; 4, wiring; 5, torsion spring; A is a smooth arc Electrical contact surface; B is a jagged electrical contact surface. the

Detailed ways

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

Referring to FIGS. 1 to 4 , a ground protection pliers includes two hinged pliers handles 1 , and a powerful torsion spring 5 is provided at the hinges of the two pliers handles 1 . Also includes two pliers heads 2, the opposite sides of the two pliers handles 1 are provided with grooves 11 extending along the length direction thereof, the two pliers heads 2 are respectively embedded in the grooves 11 of the two pliers handles 1, and the torsion spring 5 The two arms abut against the inner walls of the two grooves 11 respectively. The middle parts of the two pliers heads 2 are hinged to the corresponding pliers handles 1 through pins 3, and the upper and lower ends of the two pliers heads 2 are provided with a first terminal clamp 2a and a second terminal clamp 2b bent outward along the direction perpendicular to the clamp handle 1. The opposite sides of the two second terminal clamps 2b are provided with serrated arc-shaped electrical contact surfaces B, and the two first terminal clamps 2a are provided with smooth arc-shaped electrical contact surfaces A. The bottoms of the two clamp handles 1 are respectively connected with wires 4, which are used for connecting wires between the grounding clamp and the grounding grid. the

The utility model is suitable for grounding of circuit terminals or busbars of 10kV and below. The smooth arc-shaped electrical contact surface A of the first terminal clamp 2a is used for electrical contact with the terminal tube, and the serrated surface of the second terminal clamp 2b The arc-shaped electrical contact surface B is used to make electrical contact with the panel of the terminal block. When the two first terminal clamps 2a are connected to clamp the terminal tube, because the pliers head 2 is hinged with the pliers handle 1, the lower ends of the side walls of the two pliers heads 2 are in close contact, which reacts on the two first terminal clamps 2a so that the two first terminal clamps 2a The contact with the terminal panel is closer; when the two second clamps 2b are clamped on the terminal panel, because the clamp head 2 is hinged with the clamp handle 1, the upper ends of the side walls of the two clamp heads 2 are in close contact, which reacts on the two second clamps 2b This makes the two second terminal clips 2b in closer contact with the terminal panel. the

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-mentioned is only the specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto, and all utilize this design to carry out insubstantial change to the utility model, all should belong to the act of violating the protection scope of the utility model. the

Claims (3)

1. ground protection pincers; comprise two hinged clamp handles; it is characterized in that: also comprise two binding clips; this two clamp handles opposite side is provided with the groove extended along its length; this two binding clip is embedded in the groove of this two clamp handle respectively; all hinged with corresponding clamp handle by pin in the middle part of this two binding clip, these upper and lower two ends of two binding clips are equipped with along bandy first binding clip in vertical clamp handle direction and the second binding clip, and two second binding clip opposite sides are provided with jagged arc electrical contact face.

2. a kind of ground protection pincers as claimed in claim 1, it is characterized in that: also include torsion spring, this torsion spring is arranged at the hinged place of two clamp handles.

3. a kind of ground protection pincers as claimed in claim 1, is characterized in that: be connected to wiring bottom described two clamp handles.