CN214541999U

CN214541999U - Fuse type isolating switch

Info

Publication number: CN214541999U
Application number: CN202120423080.7U
Authority: CN
Inventors: 郑元品
Original assignee: Right Electric Co ltd
Current assignee: Right Electric Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-29
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a fuse formula isolator, be in including insulating support, setting respectively the last static contact seat and lower static contact seat, the conductive tube of both ends are in about the insulating support last moving contact and lower moving contact, the setting at both ends are in about the conductive tube go up the pressure spring of static contact seat, down the moving contact with rotate and buckle formula be assembled between the static contact seat down through the round pin axle, go up the moving contact with it supports touch-type block assembly through pressure spring to go up between the static contact seat for the convenience is changed to conductive tube, last moving contact, lower moving contact, and operating personnel can conveniently change the part, reduces the maintenance cost, and the security performance is high.

Description

Fuse type isolating switch

Technical Field

The utility model relates to a fuse formula isolator.

Background

In the prior art, the disconnecting switch is power equipment which is used in a large amount, the disconnecting switch applied to electric power at present basically adopts a blade type structure, and in actual operation, because of long-term continuous transmission of current, the blade is easy to generate heat to cause blade deformation to cause poor contact, and then the deterioration is arcing, even arc short circuit is caused, and potential safety hazards are caused to the operation of a power grid. When the parts are damaged, the whole product can only be replaced, and the whole line is powered off when the parts are replaced, so that the maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a fuse formula isolator.

In order to solve the technical problem, the utility model discloses a technical scheme is: a fuse type isolating switch comprises an insulating support, an upper static contact seat and a lower static contact seat which are respectively arranged at the upper end portion and the lower end portion of the insulating support, a conductive tube, an upper moving contact and a lower moving contact which are arranged at the upper end portion and the lower end portion of the conductive tube, and a compression spring arranged on the upper static contact seat, wherein the lower moving contact and the lower static contact seat rotate through a pin shaft and are in buckled assembly connection, and the upper moving contact and the upper static contact seat are in abutting type clamping assembly through the compression spring.

In certain embodiments, the contact tube is a copper tube contact tube.

In some embodiments, the copper tubular conductive tube is thick in the middle and thin at both ends.

In some embodiments, a U-shaped groove with an upward opening is formed in the lower stationary contact base, a damping point is arranged on an outer side wall of the U-shaped groove, the lower movable contact is provided with the pin shaft, and when the pin shaft overcomes the damping point and is inserted into the bottom of the U-shaped groove in a buckling manner, the pin shaft is accommodated between the damping point and the bottom of the U-shaped groove.

In some embodiments, the surfaces of the contact portions of the lower moving contact and the lower fixed contact seat are respectively provided with a silver plating layer with a thickness of 3 μm.

In some embodiments, the surfaces of the contact portions of the upper moving contact and the upper fixed contact seat are respectively provided with a silver plating layer with a thickness of 3 μm.

In some embodiments, the upper moving contact is provided with an operating hook.

In some embodiments, an arc extinguishing cover is disposed above the upper static contact base, an inner cavity is disposed inside the arc extinguishing cover, and an arc extinguishing material layer is disposed inside the inner cavity.

The scope of the present invention is not limited to the technical solutions formed by specific combinations of the above technical features, and other technical solutions formed by arbitrary combinations of the above technical features or equivalent features should be covered. For example, the above features and the technical features (but not limited to) having similar functions disclosed in the present application are mutually replaced to form the technical solution.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model provides a fuse formula isolator for the contact tube, go up the moving contact, the moving contact is changed conveniently down, and operating personnel can conveniently change the part, reduces the maintenance cost, and the security performance is high.

Drawings

FIG. 1 is a schematic diagram of a fused disconnect switch;

wherein 1, an insulating bracket; 2. an upper static contact base; 3. a lower stationary contact base; 31. a U-shaped groove; 311. a damping point; 4. a compression spring; 5. a conductive tube; 6. an upper moving contact; 7. a lower moving contact; 71. a pin shaft; 8. operating a hook; 9. an arc extinguishing chamber.

Detailed Description

As shown in fig. 1, in this embodiment, a fuse type disconnecting switch includes an insulating support 1, an upper static contact seat 2 and a lower static contact seat 3 respectively disposed at upper and lower end portions of the insulating support 1, a conductive tube 5, an upper movable contact 6 and a lower movable contact 7 disposed at upper and lower end portions of the conductive tube 5, and a pressure spring 4 disposed on the upper static contact seat 2, where the lower movable contact 7 and the lower static contact seat 3 rotate and are snap-fit connected by a pin 71, can rotate in a circumferential direction, and can be taken out from the lower static contact seat, and is convenient to take out or install.

The conductive tube 5 is a copper tube type conductive tube, and the middle of the copper tube type conductive tube is thick, and the two ends of the copper tube type conductive tube are thin.

The lower static contact base 3 is provided with a U-shaped groove 31 with an upward opening, the outer side wall of the U-shaped groove 31 is provided with a damping point 311, the lower dynamic contact 7 is provided with the pin 71, when the pin 71 overcomes the damping point 311 and is inserted at the bottom of the U-shaped groove 31 in a buckling manner, the pin 71 is accommodated between the damping point 311 and the bottom of the U-shaped groove 31.

Silver coatings with the thickness of 3 mu m are respectively arranged on the surfaces of the contact parts of the lower moving contact 7 and the lower static contact base 3. And silver coatings with the thickness of 3 mu m are respectively arranged on the surfaces of the contact parts of the upper moving contact 6 and the upper static contact seat 2. The silver coating has good conductivity, can reduce poor contact of contacts of the traditional isolating switch caused by long-term operation heating, and reduces the operation faults of a power grid.

And the upper moving contact 6 is provided with an operation hook 8.

An arc extinguishing cover 9 is arranged above the upper static contact seat 2, an inner cavity is arranged inside the arc extinguishing cover 9, and an arc extinguishing material layer is arranged in the inner cavity.

The upper moving contact 6 and the upper static contact base 2 are assembled in a butting type clamping mode through the compression spring 4, when the upper moving contact 6 and the upper static contact base 2 are switched off or switched on, the lower moving contact 7 and the lower static contact base 3 rotate in the circumferential direction through the pin shaft 71, and after the upper moving contact 6 and the upper static contact base 2 are switched on and off, the compression spring 4 axially applies pressing force along the conductive tube 5 to provide switching-on locking force.

The pin shaft overcomes the defect that a damping point is arranged in the U-shaped groove in a pluggable mode, so that the conductive tube, the upper moving contact and the lower moving contact are convenient to replace, an operator can conveniently replace components, the maintenance cost is reduced, and the safety performance is high.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a fuse formula isolator, includes insulating support (1), sets up respectively last static contact seat (2) and lower static contact seat (3), contact tube (5) of both ends about insulating support (1), set up and be in last moving contact (6) and lower moving contact (7) at both ends about contact tube (5), set up and be in compress spring (4) of last static contact seat (2), its characterized in that: the lower moving contact (7) and the lower static contact seat (3) rotate through a pin shaft (71) and are in snap-fit assembly connection, and the upper moving contact (6) and the upper static contact seat (2) are in abutting-fit assembly through a compression spring (4).

2. A fused disconnect switch in accordance with claim 1 wherein: the conductive tube (5) is a copper tube type conductive tube.

3. A fused disconnect switch in accordance with claim 2 wherein: the copper tube type conductive tube is thick in the middle and thin at two ends.

4. A fused disconnect switch in accordance with claim 1 wherein: the lower fixed contact seat (3) is provided with a U-shaped groove (31) with an upward opening, the outer side wall of the U-shaped groove (31) is provided with a damping point (311), the lower movable contact (7) is provided with the pin shaft (71), when the pin shaft (71) overcomes the buckling type of the damping point (311) and is inserted into the bottom of the U-shaped groove (31), the pin shaft (71) is contained between the damping point (311) and the bottom of the U-shaped groove (31).

5. A fused disconnect switch in accordance with claim 1 wherein: silver coatings with the thickness of 3 mu m are respectively arranged on the surfaces of the contact parts of the lower moving contact (7) and the lower static contact seat (3).

6. A fused disconnect switch in accordance with claim 1 wherein: and silver coatings with the thickness of 3 mu m are respectively arranged on the surfaces of the contact parts of the upper moving contact (6) and the upper static contact seat (2).

7. A fused disconnect switch in accordance with claim 1 wherein: an operating hook (8) is arranged on the upper moving contact (6).

8. A fused disconnect switch in accordance with claim 7 wherein: an arc extinguishing cover (9) is arranged above the upper static contact seat (2), an inner cavity is arranged inside the arc extinguishing cover (9), and an arc extinguishing material layer is arranged in the inner cavity.