CN2307366Y

CN2307366Y - High voltage fuse

Info

Publication number: CN2307366Y
Application number: CN 97228011
Authority: CN
Inventors: 王泽林
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-22
Filing date: 1997-09-22
Publication date: 1999-02-10
Anticipated expiration: 2007-09-22

Abstract

The utility model relates to a high voltage fuse for a high voltage electric network, which is composed of a fuse wire pipe, an insulator, a spring contact, and a supporting mechanism, wherein, a supporting frame of the supporting mechanism is provided with a contact sheet which extends a length; an elastic pressing sheet is arranged on the contact sheet; a lower wire connecting plate is led from the side face of the supporting frame; the supporting mechanism is provided with an arc plate; pull-through screw bolts pass through the arc plate and the insulator, and is fixed by nuts. The utility model has the advantages of enhanced through-flow performance, copper material saving, convenient wire connecting and installing.

Description

High-tension fuse

This reality has novel a kind of high-tension fuse that relates to, and mainly supplies in the high-voltage alternating electrical network usefulness of protection power circuit and electric equipment.

Existing high-tension fuse is seen Fig. 5, mainly is made up of cartridge fuse 5, insulator 1, upper wiring board 2, following terminal block 21 and supporting device 24, is illustrated as "on" position.Served as load current or short circuit current with in the cartridge fuse during fuse failure, last moving contact 4 is thrown off with spring contact 3, and cartridge fuse falls, thereby has played overload protective function.Its weak point is: contact chip 25 is line contacts, and through-current capability is lower; Lower connecting plate 21 is drawn from the insulator bottom center, and copper material expends more, and it is convenient that operation is also owed; Supporting device is clasped in the insulator upper and lower part by a bearing support 22 and an armful frame 23, and structure owes convenient than complicated and installation.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art and a kind of contact chip is provided is that face contacts, following terminal block is drawn by the bearing support side and the structure of supporting device is simple and more convenient high-tension fuse is installed.

The purpose of this utility model can reach by following measure:

The utility model is made up of cartridge fuse, insulator, spring contact and supporting device, have on the bearing support of supporting device and stretch out long contact chip, flexible compressing tablet on the contact chip, following terminal block is drawn by the bearing support side, supporting device has arc, interspersed bolt passes arc and insulator, has nut to tighten up.

The drawing of accompanying drawing is described as follows:

Fig. 1 is total figure of the present utility model;

Fig. 2 is the broken section enlarged drawing of the utility model supporting device;

Fig. 3 is that the A of Fig. 2 is to partial view;

Fig. 4 is that the B of Fig. 2 is to partial view;

Fig. 5 is total figure of prior art.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing:

Fig. 1 represents overall structure of the present utility model.Insulator 1, upper wiring board 2, spring contact 3, last moving contact 4 and cartridge fuse 5 are same as the prior art.The utility model is to be installed on electric pole or the associated supports by mounting panel 18.

Fig. 2-Fig. 4 represents the structure of the utility model supporting device 6.Axle sleeve 8, axle 9, lower moving contact 10, arc 11 and interspersed bolt 12 are arranged on the bearing support 7, and the lower moving contact top is an arc plate 13.Contact chip 14 1 ends (left part shown in Figure 2) are fixing, and other holds protruding longer, and flexible compressing tablet 15 on the contact chip overlays contact chip on arc plate 13, be contained within on the arc plate to guarantee contact chip, and the contact of formation face, thereby, improved through-flow performance.

Following terminal block 16 is drawn by bearing support 7 sides and seen Fig. 3, and connection bolt 20 is arranged on it, and is easy to operate during wiring, and also can save the copper material consumption than prior art.

Arc 11 is arranged on the supporting device 6, after interspersed bolt passes arc and insulator, tighten up with arc 17 and nut.The upper end of insulator is same adopts interspersed bolt 12 to pass arc 11, insulator 1, arc 17, spring contact 3 one ends (left end shown in Figure 1) and upper wiring board 2 lower ends, tightens up with nut then.Simpler and easy for installation than prior art constructions.

During use, the last moving contact 4 of cartridge fuse 5 and spring contact 3 are closed opening and closing 19 places, position.Behind the fuse failure, last moving contact 4 is thrown off with spring contact, and cartridge fuse changes down around axle 9 and falls, and has played overload protective function.

The utility model contrast prior art has following advantage: improved through-flow performance; Save copper material; Wiring Operation and installation are more convenient.

Claims

1, a kind of high-tension fuse that is used for high-voltage fence, comprise cartridge fuse, insulator and spring contact, it is characterized in that, also comprise supporting device, have on the bearing support of supporting device and stretch out long contact chip, flexible compressing tablet on the contact chip, following terminal block is drawn by the bearing support side, supporting device has arc, and interspersed bolt passes arc and insulator, has nut to tighten up.