CN201994227U

CN201994227U - Low-voltage fuse type disconnector

Info

Publication number: CN201994227U
Application number: CN201120015972XU
Authority: CN
Inventors: 杜玉庆; 刘晓宇
Original assignee: LIAONING YUGUANG POWER TRANSMISSION AND TRANSFORMATION Co Ltd; State Grid Liaoning Electric Power Co Ltd
Current assignee: ABB Schweiz AG
Priority date: 2011-01-19
Filing date: 2011-01-19
Publication date: 2011-09-28
Anticipated expiration: 2021-01-19

Abstract

The utility model provides a low-voltage fuse type disconnector, which comprises an insulator serving as a switch setting base and a moving knife board. A moving knife board hinged fixed contact component and a switch fixed contact component are fixed two ends of the insulator respectively. A U-shaped clamp spring is fixedly disposed on the inner side of the switch fixed contact component at the end of the insulator, and electric contact positions of a moving contact and a fixed contact are clamped tightly by the U-shaped clamp spring. An elastic regulating bolt and a clamp board type contact spacing regulating structure thereof in the prior art are substituted by the U-shaped clamp spring in the technical scheme, elastic clamping force of the U-shaped clamp spring is directly applied to the electric contact positions of the moving contact and the fixed contact, structurally complete face type conductive contact between the moving contact and the fixed contact is ensured, and the low-voltage fuse type disconnector is superior in conductivity and high in switch stability.

Description

Low pressure Fuse Type isolating switch

Technical field

The utility model relates to isolating switch, especially a kind of low pressure Fuse Type isolating switch.

Background technology

The critical piece of low pressure Fuse Type isolating switch comprises insulator and switch moving knife, insulator or band two ends elbow overall structure as shown in the figure, or be provided with two insulator structures perpendicular to secured in parallel on the base plate, the end of insulator all fixedly installs or the pre-buried switch fixed contact that is provided with, one end moving contact clamping plate of switch moving knife are provided with hook, be mounted in hinged way on the fixed contact hanging column of insulator leading-out terminal, other end clamping plate type moving contact cooperates with the fixed contact touch panel switch, the clamping plate gap of clamping plate type moving contact is to be adjusted by the spring dynamics of adjusting bolt and adjust on the bolt, thereby the good electrical that guarantees moving contact and fixed contact is connected contact.That is to say, the switch moving knife of existing product mainly is to rely on elastic clip between clamping plate try hard to keep card switch moving knife and the stable closure state of insulator, the adjustment bolt is arranged on and deviates from the far-end that clamping plate electrically contact the position, the elastic fatigue state appears if elasticity is adjusted the spring of bolt, or the moving contact clamping plate certain deformation occurs because of switch motion repeatedly, clamping strength between clamping plate weakens, just can't effectively guarantee the mode that electrically contacts of face contact form, the conductivity variation of switch room, it is more particularly to link up with the possibility that hinged end goes wrong, and has a strong impact on the service behaviour of product.

Summary of the invention

Goal of the invention of the present utility model is to provide a kind of stability that improves switch performance, especially a kind of low pressure Fuse Type isolating switch that conducts electricity contact performance between contact, makes it to have long-term stability and reliable switch service behaviour that improves.The low pressure Fuse Type isolating switch technical scheme that the utility model provides, its major technique content is: a kind of low pressure Fuse Type isolating switch, it includes insulator and the moving knife plate that pedestal is set as switch, the insulator two ends are fixed with hinged fixed contact member of moving knife plate and switch fixed contact member respectively, one U-shaped jump ring is fixedly installed on the switch fixed contact member inboard of insulator end, and the position that electrically contacts of dynamic and static contact is gripped by the U-shaped jump ring and to be closed.

In above-mentioned overall technical architecture, another U-shaped jump ring is fixedly installed on the hinged fixed contact member of the moving knife plate inboard of insulator end, and moving knife plate hook end is gripped by this U-shaped jump ring in moving knife plate closing position and closed.

The disclosed low pressure Fuse Type of the utility model isolating switch technical scheme, replace elasticity of the prior art by the U-shaped jump ring and adjusted bolt and clamping plate type contact pitch adjustment structure thereof, because the elastic clip of the U-shaped jump ring amount of making a concerted effort acts directly on electrically contacting on the position of moving contact and fixed contact, on structure, just guaranteed to move, fixed contact is the contact of face formula conduction completely, thereby has a good electric conductivity, can effectively limit the moving contact clamping plate mechanical deformation occurs to this structure on the one hand, when even if certain mechanical deformation has appearred in the moving contact clamping plate on the other hand, also can guarantee itself and fixed contact switch contact performance, guarantee the stability and the reliability of switch motion, be combined with the moving knife plate again and mount the U-shaped jump ring of end, both comprehensive functions will make the switching technique performance of product be further improved.The technical program also has technological merit simple in structure, that the cost cost is low.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of this low pressure Fuse Type isolating switch off-state

Fig. 2 is the structure chart of this low pressure Fuse Type isolating switch closure state

Fig. 3 is the three-dimensional structure diagram of this U-shaped jump ring.

Embodiment

Low pressure Fuse Type isolating switch of the present utility model, as shown in the figure, it mainly includes the insulator 1 that pedestal is set as switch, hinged fixed contact member of moving knife plate and switch fixed contact member are individually fixed in the two ends of insulator 1, also comprise the moving knife plate 2 that cooperates with switch fixed contact switch, in this enforcement structure, the two ends of insulator 1 have quarter bend, it also can be made of in the insulator of straight plate pedestal straight plate pedestal and vertical fixing, the top of quarter bend all is embedded with fixed contact terminal

block fixing base

3a and 3b, fixed

contact terminal block

4a, 4b crosswise fixed is respectively mounting substrate 3a, on the substrate 3b, wherein mount substrate 3a and be provided with the hanging column 12 that mounts moving knife plate 2, constituted the hinged fixed contact member of moving knife plate respectively, switch fixed contact member.Moving knife plate 2 is made of jointly insulation board 20 and clamping plate type moving contact 21 that is individually fixed in insulation board 20 two ends and clamping plate type moving contact hook 22, fixed contact terminal block 4a the inner is in the clamping plate gap of clamping plate type moving contact hook 22, clamping plate type moving contact hook 22 mounts on the hanging column 12 that mounts substrate 3a, switch fixed contact terminal block 4b inboard is in the clamping plate interstitial site of clamping plate type moving contact 21 equally, cooperates with clamping plate type moving contact 21 switches.One U-shaped jump ring 5b is fixedly set in the switch fixed contact substrate 3b inboard of insulator 1 end, the position of U-shaped jump ring 5b just is positioned at clamping plate type moving contact 21 and contacts the position with the switch of switch fixed contact terminal block 4b, elastic clip cooperation by the U-shaped jump ring is used, the clamping plate type moving contact 21 that switch is cooperated grips with switch fixed contact terminal block 4b and closes, make to have the excellent contact face between the two, improve electric conductivity.Screw out the switching manipulation that disconnects and screw in closure for the ease of moving knife plate 2, the U-shaped jump ring has wedge shape lead angle mouth 50, and its U-shaped jump ring two walls all have the sandwich serface 51 that concaves, not only can better clamp the conductive contact surfaces of dynamic and static contact, and guarantee that mechanical deformation does not appear in clamping plate type moving contact 21, even certain deformation occurs, also can guarantee electric conductivity accurately entering under the guiding of the wedge shape lead angle mouth of U-shaped jump ring under closed position, the effect at the sandwich serface 51 of indent; Equally, in order to guarantee that clamping plate type moving contact hook 22 also has good conduction contact performance in moving knife plate closing state, what another U-shaped jump ring 5a was fixedly set in insulator 1 end mounts substrate 3a inboard, elastic clip cooperation by this U-shaped jump ring 5a is with excellent good conduction of clamping plate type moving contact hook 22 and fixed contact terminal block 4a contacted, thereby have stable operation performance of as switch, improved the switches conductive performance, U-shaped jump ring 5a has the sandwich serface 51 of wedge shape lead angle mouth 50 and indent too.

Claims

1. low pressure Fuse Type isolating switch, it includes insulator (1) and the moving knife plate (2) that pedestal is set as switch, the insulator two ends are fixed with hinged fixed contact member of moving knife plate and switch fixed contact member respectively, it is characterized in that a U-shaped jump ring (5b) is fixedly installed on the switch fixed contact member inboard of insulator end, the position that electrically contacts of dynamic and static contact is gripped by the U-shaped jump ring and to be closed.

2. isolating switch according to claim 1 is characterized in that U-shaped jump ring (5b) has wedge shape lead angle mouth.

3. isolating switch according to claim 1 and 2 is characterized in that U-shaped jump ring two walls all have the sandwich serface (51) that concaves.

4. isolating switch according to claim 1, it is characterized in that another U-shaped jump ring (5a) be fixedly installed on the insulator end the hinged fixed contact of moving knife plate mount substrate (3a) inboard, moving knife plate hook end is gripped by this U-shaped jump ring in moving knife plate closing position and is closed.

5. isolating switch according to claim 4 is characterized in that U-shaped jump ring (5a) has wedge shape lead angle mouth.

6. according to claim 4 or 5 described isolating switches, it is characterized in that U-shaped jump ring two walls all have the sandwich serface (51) that concaves.