CN2533564Y

CN2533564Y - Isolating switch

Info

Publication number: CN2533564Y
Application number: CN 02233463
Authority: CN
Inventors: 涂大石; 李志国
Original assignee: Individual
Current assignee: Tang Jialong
Priority date: 2002-05-13
Filing date: 2002-05-13
Publication date: 2003-01-29
Anticipated expiration: 2012-05-13

Abstract

The utility model relates to a novel isolation switch which is composed of a base, a connection shaft (a), a pressing spring, a support shaft, a pressing spring, a connection shaft (b), a main shaft, an insulated pull-rod, a movable cutter arm, a movable support base, a grounding cutter touch finger, a grounding cutter, a short displacement, a grounding cutter elbow, an insulator and a grounding cutter shaft, wherein one end of the movable cutter arm is movably connected with the movable support base and is movably connected with the insulated pull-rod via a pin hole; the insulated pull-rod is connected with the main shaft which is installed on the base; the grounding cutter touch finger is installed on the movable support base; the insulator is installed between the support base and the base; the pressing springs are respectively installed between the connection shaft (a) and the support shaft and between the support shaft and the connection shaft (b). The utility model has the advantages of a small occupation volume of the whole body, low cost and larger current carrying capacity.

Description

A kind of novel isolating switch

Technical field

The utility model relates to a kind of High-Voltage Electrical Appliances element, particularly a kind of isolating switch that is widely used in various controller switching equipments and the various electric power system.

Background technology

At present, isolating switch both domestic and external all is made up of base, insulated tension pole, moving knife arm, fixed contact (terminals of holding concurrently), quiet end insulating part (wall bushing of holding concurrently sometimes), moving knife arm, moving bearing (moving contact side terminal), ground connection fingertip and ground connection cutter etc.Do not use mutually with other element, but by re-using after the conductor connection.Thereby take up room big, cost is higher.In addition, the moving contact stage clip of isolating switch moving knife arm is placed in outside the blade, and it is big to take volume, when alternate charged distance is not enough, has to adopt compound inslation to be isolated.

Summary of the invention

The purpose of this utility model is: a kind of novel isolating switch that volume is little, cost is low that totally takies is provided, and this isolating switch has bigger current capacity.

The purpose of this utility model is achieved in that a kind of novel isolating switch, is by base; Connecting axle (a); Stage clip; Back shaft; Stage clip; Connecting axle (b); Main shaft; Insulated tension pole; The moving knife arm; Moving bearing; Ground connection cutter fingertip; The ground connection cutter; Short circuit row; Ground connection cutter connecting lever; Insulator and ground connection cutter shaft are formed; One end of moving knife arm and moving bearing flexibly connect, and flexibly connect by pin-and-hole and insulated tension pole, insulated tension pole be installed in base on main shaft on connecting lever be connected, ground connection cutter fingertip is installed on the moving bearing, insulator is installed between moving bearing and the base, is separately installed with stage clip between connecting axle (a) and back shaft and back shaft and the connecting axle (b).Described every phase moving knife arm (comprising ground connection cutter fingertip) is to be formed by the individual independent blade unit of 2n (n is the integer greater than 1), and two holddown spring of each blade is two compression springs, be placed in respectively in the middle of each blade, produce in opposite directions pressure by pull bar, thereby keep reliable contact the between moving knife arm and fixed contact and the moving bearing.The utility model takies totally that volume is little, cost is low and bigger current capacity is arranged.

Description of drawings

Fig. 1 (a) and (b), (c) are structure installation diagram of the present utility model;

Among the figure, 1-base; 2-connecting axle (a); 3-stage clip; 4-back shaft; 5-stage clip; 6-connecting axle (b); 7-main shaft; 8-insulated tension pole; 9-moving knife arm; 10-moving bearing; 11-ground connection cutter fingertip; 12-ground connection cutter; 13-short circuit row; 14-ground connection cutter connecting lever; 15-insulator; 16-ground connection cutter shaft.

Fig. 2 (a) and (b) are the detailed structure view of moving knife arm;

Among the figure, 21-cutting blade (a); 22-cutting blade (b) (axis hole is arranged); 23-packing ring; 24-pin; 25-yoke plate; 26-pull bar; 27-stage clip; 28-support set.

Fig. 3 is an embodiment of the present utility model.

Among the figure, 31-isolating switch of the present utility model; 32-current transformer; 33-installation base plate; 34-fixed contact.

Embodiment

Shown in Fig. 1 (a) and (b), (c), the pivot pin of moving knife arm 9 on moving bearing 10 under the effect of insulated tension pole 8 rotates.When closing position, stage clip 5 keeps the power that main shaft 7 is rotated counterclockwise, to guarantee can not make moving knife arm 9 and fixed contact disengaging because of external force.Equally, when the separating brake position, can guarantee moving knife arm 9 can be not automatically and fixed contact approaching.Same principle, stage clip 3 guarantee ground connection cuttves 12 close fashionable can be not automatically and 11 disengagings of ground connection cutter fingertip, can be not automatically and 11 connections of ground connection cutter fingertip after during separating brake.When having only moment that actuating torque produces greater than above-mentioned stage clip and resistance torque sum, just can make the action of isolating switch or earthed switch.

Shown in Fig. 2 (a) and (b), the power that stage clip 27 produces acts directly on the stub end (large and small both sides of pull bar are porose respectively) of two pull bars 26, and the pin-and-hole of stub end is an axial long hole, and the pin-and-hole of little head end is identical with the diameter of pin 24.This power makes two pull bars 26 produce rightabout power, and this power acts on respectively on two pins 24 (microcephaly holds pin-and-hole by pull bar).Two pins act on the cutting blade 21 by packing ring 23 again, to guarantee reliable contact the between conductive blade and moving bearing, fixed contact.If stage clip 27 is placed on the blade outside, then the width of whole electrified body strengthens, and might make the distance of phase insulation not enough, has to adopt the method for compound inslation.

Referring to Fig. 3, isolating switch 31 summation current transformers 32 are installed on the base plate 33, isolate fixed contact 34 and are installed in again on the side terminal of current transformer 32.This structure has just constituted a complete isolating switch that has function through walls and current measurement function.During separating brake, moving knife arm moving bearing rotates, till reaching safe distance between dynamic and static contact.The moving knife arm just forwards horizontal level to during combined floodgate.If require to show whether moving terminals are charged, can change insulator into transducer (capacitor voltage divider) and get final product.

Claims

1, a kind of novel isolating switch is characterized in that: be by base; Connecting axle (a); Stage clip; Back shaft; Stage clip; Connecting axle (b); Main shaft; Insulated tension pole; The moving knife arm; Moving bearing; Ground connection cutter fingertip; The ground connection cutter; Short circuit row; Ground connection cutter connecting lever; Insulator and ground connection cutter shaft are formed; One end of moving knife arm and moving bearing flexibly connect, and flexibly connect by pin-and-hole and insulated tension pole, insulated tension pole is connected with main shaft on being installed in base, ground connection cutter fingertip is installed on the moving bearing, insulator is installed between moving bearing and the base, is separately installed with stage clip between connecting axle (a) and back shaft and back shaft and the connecting axle (b).

2, a kind of novel isolating switch according to claim 1, it is characterized in that: every phase moving knife arm (comprising ground connection cutter fingertip) is that the independent blade unit by 2n (n for greater than 1 integer) forms, and the holddown spring at each blade two is two compression springs, be placed in respectively in the middle of each blade, produce in opposite directions pressure by pull bar, thereby keep reliable contact the between moving knife arm and fixed contact and the moving bearing.