CN203733738U - Contact structure of high-voltage circuit breaker - Google Patents

Abstract

The utility model discloses a contact structure of a high-voltage circuit breaker, which comprises moving contacts and a static contact, wherein the moving contacts are provided with a clearance therebetween matched with the static contact, an adjusting bolt, which is used for adjusting the size of the clearance, penetrates through the middle parts of the moving contacts, the front ends of the moving contacts arch upward to form a circular clamping part, the static contact is a cylindrical conductive column, and two sides of the conductive column are symmetrically provided with positioning pins matched with the clearance of the moving contacts. The contact structure of the high-voltage circuit breaker is simple and reasonable in structure and convenient to install and use, the front end of the static contact and the front ends of the moving contacts adopt a design of the cylindrical conductive column and the circular clamping part respectively, the contact tightness of the moving contacts and the static contact is effectively improved, a phenomenon of loosening and deflection is not easy to occur, the stability of the contacts is improved and the service life is prolonged. In addition, the contact area of the moving contacts and the static contact is effectively increased, the conductivity of the contacts is enabled to be stable, and the use safety of the high-voltage circuit breaker is ensured.

Description

A kind of structure of contact terminal of primary cut-out

Technical field

The utility model relates to a kind of circuit breaker accessory, is specially a kind of structure of contact terminal of primary cut-out.

Background technology

Primary cut-out is the switching device that a kind of power equipment uses, and the structure of contact terminal of existing primary cut-out is reasonable not, after long-time use, moving contact contacts tightness decline with fixed contact, stable not, easily occur loosening, skewness, and the contact area of moving contact and fixed contact is less, can not ensure preferably electric conductivity,, there is potential safety hazard in the use safety that affects primary cut-out.

Utility model content

The purpose of this utility model is to provide a kind of structure of contact terminal of primary cut-out, reasonable not to solve structure of contact terminal traditional in prior art, after long-time use, moving contact contacts tightness decline with fixed contact, stable not, easily occur loosening, skewness, and the contact area of moving contact and fixed contact is less, can not ensure preferably electric conductivity, affect the use safety of primary cut-out, have the problem of potential safety hazard.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of structure of contact terminal of primary cut-out, it is characterized in that: include moving contact and fixed contact, in the middle of described moving contact, be provided with the gap of matching with fixed contact, described moving contact middle part is crossed and is useful on the adjusting bolt that regulates gap length, described moving contact front end arches upward to both sides and forms circular Access Division, described fixed contact is cylindrical conductive cylinder, and described conducting post bilateral symmetry is provided with the angle matching with moving contact gap.

The structure of contact terminal of described a kind of primary cut-out, is characterized in that: the circular clamping subordinate edge of described moving contact front end is provided with chamfering.

The beneficial effects of the utility model are:

The utility model is simple and reasonable, easy to install, fixed contact and moving contact front end adopt the design of cylindrical conductive cylinder and circular Access Division, the contact tightness that has effectively improved dynamic and static contact, is not prone to loosening, skewness, has improved the stability of contact, extend useful life, and effectively increase the contact area of dynamic and static contact, made contact electric conductivity stable, ensured the use safety of primary cut-out.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

As shown in Figure 1, a kind of structure of contact terminal of primary cut-out, include moving contact 1 and fixed contact 2, in the middle of moving contact 1, be provided with the gap 3 of matching with fixed contact 2, moving contact 1 middle part is crossed and is useful on the adjusting bolt 4 that regulates gap length, moving contact 1 front end arches upward to both sides and forms circular Access Division 5, and fixed contact 2 is cylindrical conductive cylinder, and conducting post bilateral symmetry is provided with the angle 6 matching with moving contact 1 gap.

Circular Access Division 5 lower limbs of moving contact 1 front end are provided with chamfering.

Claims (2)

1. the structure of contact terminal of a primary cut-out, it is characterized in that: include moving contact and fixed contact, in the middle of described moving contact, be provided with the gap of matching with fixed contact, described moving contact middle part is crossed and is useful on the adjusting bolt that regulates gap length, described moving contact front end arches upward to both sides and forms circular Access Division, described fixed contact is cylindrical conductive cylinder, and described conducting post bilateral symmetry is provided with the angle matching with moving contact gap.

2. the structure of contact terminal of a kind of primary cut-out according to claim 1, is characterized in that: the circular clamping subordinate edge of described moving contact front end is provided with chamfering.