CN202633544U - Earth wire connector - Google Patents

Abstract

The utility model relates to an earth wire connector comprising a clamp body and an earth wire hanging ring. The clamp body is formed by connecting two semicircular clamp plates, and the earth wire hanging ring is connected with the clamp body. The earth wire connector is characterized in that two ends of the inner side walls of the semicircular clamp plates are in step shape, bore diameter formed in the middle of the clamp body is smaller than that of the two ends and can be in close fit with an exposed wire core of a cable, and the bore diameter of the two ends of the clamp body is matched with a cable insulation sheath. The earth wire connector is mounted on a high-voltage power transmission and transformation circuit cable, is connected with the cable insulation sheath at two ends of the exposed wire core of the cable when being closely connected with an exposed wire core section of the cable simultaneously, safety earthing can be guaranteed, stress on the exposed wire core section can be avoided, cable breakage due to poor tensile resistance and wind resistance of the exposed wire core section of the cable after the cable insulation sheath is peeled off is eliminated, and use is safe and reliable.

Description

The ground wire-connecting device

Technical field

The utility model relates to a kind of earthing device, particularly a kind of ground wire-connecting device that is used for high voltage power transmission and transforming circuit cable.

Background technology

Cable in the high voltage power transmission and transforming circuit need be provided with the ground wire-connecting device respectively in suitable distance usually, so that when carrying out power-on serving, upkeep operation, in order to connect ground wire easily, guarantees operating personnel's safety.Mostly existing ground wire-connecting device is the clamp-type structure, and the inboard folder face of its clamp is same cambered surface, during installation, need divest according to the width of clip insulating case with cable, then with the clip frame of ground wire-connecting device on exposed core and fixing.The shortcoming of this wire connecting device is: clamp only is connected on the core that is divested the cable insulation cover; The core that this section is exposed will bear cable gravity; Because of its tensile strength lower; Wind-force causes cable constantly to rock in addition, very easily makes exposed core produce metal fatigue and cause fracture in the end that its insulating case divests.

Summary of the invention

The purpose of the utility model is to overcome the deficiency of prior art, provides a kind of and can carry out effective grounding with the cable exposure core and be connected, and can prevent the ground wire-connecting device of cable exposure core fracture again.

The purpose of the utility model is achieved in that a kind of ground wire-connecting device; Comprise the clamp that connects and composes by two semicircle clamping plate, the ground wire link that links to each other with clamp; The madial wall two ends that it is characterized in that the semicircle clamping plate of clamp are step shape; Form the clamp middle aperture less than the aperture, two ends, the clamp middle aperture can closely cooperate with the cable exposure core, can match with the cable insulation cover in aperture, clamp two ends.

The advantage of the utility model is: be installed in the ground wire-connecting device on the high voltage power transmission and transforming line insulation cable; With the close-connected while of cable exposure core section; Also be connected, both guaranteed safety ground, avoided the stressed of exposed core section again with the cable insulation cover at cable exposure core two ends; Thereby stop to cause cable breakage because of the tension, the wind loading rating that divest the cable exposure core section behind the insulating case is low, safe and reliable.

Description of drawings

Fig. 1 is that the utility model is installed in the structural representation on the cable;

Fig. 2 is the end view of the utility model;

Fig. 3 is that A-A of Fig. 1 is to cutaway view.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

Like Fig. 1,2, shown in 3: the utility model is linked together with ground wire link 2 by the clamp 1 that two semicircle clamping plate connect and compose; Two semicircle clamping plate of clamp can be integrated through fastening bolt 4 tightening buckles after clamping cable 3, can the utility model be installed on the cable thus.The madial wall two ends of clamp are step shape, and the center is a boss 5, thus its aperture less than the aperture at two ends 6, the clamp middle aperture can closely cooperate with the cable exposure core, can match with the cable insulation cover in aperture, clamp two ends.

When the utility model is installed; Earlier the cable insulation cover is divested; The length that divests should be equivalent to the length of clamp middle inside boss or slightly be longer than land length, and clamp is clipped on the cable, and clamp middle inside small-bore part is clipped on the core 7 that divests insulating case; Large aperture, the inboard two ends of clamp part is clipped on the cable insulation cover 8, and is then that two clamping plate of clamp are fastening with fastening bolt.

Claims (1)

1. One kind ground wire-connecting device; Comprise the clamp that connects and composes by two semicircle clamping plate, the ground wire link that links to each other with clamp; The madial wall two ends that it is characterized in that the semicircle clamping plate of clamp are step shape; Form the clamp middle aperture less than the aperture, two ends, the clamp middle aperture can closely cooperate with the cable exposure core, can match with the cable insulation cover in aperture, clamp two ends.

Images