CN2170592Y

CN2170592Y - Reset once isolation plug

Info

Publication number: CN2170592Y
Application number: CN 93229186
Authority: CN
Inventors: 杨厚春
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-06
Filing date: 1993-09-06
Publication date: 1994-06-29
Anticipated expiration: 2003-09-06

Abstract

The utility model relates to a reset once isolation plug installed in the high voltage switch cabinet of power transformation control equipment. The existing once isolation plug is not provided with force supporting points, and self-weight of contacts of the existing once isolation plug affects moving quantity and exceeds design specification, so the problem that static contacts and moving contacts knock together is easily caused, but the utility model solves the problem. The reset once isolation plug comprises a rivet shaft, a plurality of contact pieces, a spacer ring baffler and a moving contact composed of a spring shaft, a spring and a conductive plate. The upper contact piece and the lower contact piece of the moving contact are respectively provided with two contacts, and the two contacts are not on a horizontal plane. The distance of the back contacts of the upper contact piece and the lower contact piece is greater than the distance of the front contacts of the upper contact piece and the lower contact piece to increase the flexibility of the moving contact. A big bell mouth shape is formed between the front ends of the upper contact piece and the lower contact piece to avoid the static contact and the moving contact knocking together in the high voltage switch cabinet.

Description

Reset once isolation plug

The utility model belongs to a kind of electric component, the disposable separating plug of being installed in particularly a kind of power transmission and transformation control appliance high-tension switch cabinet that resets.

Accessory disposable separating plug on the existing high pressure handcart-type switch frame is not because all single R angular contact in two ends has the power fulcrum, the contact deadweight influences activity and surpasses design specification, center line and fixed contact be on a center line like this, and the moving sagging problem of plug open front has surpasses 8～12mm; Cause the fixed contact and the moving contact vertical line of new old product to bump against.Especially head-on be vertical before the moving contact, insert horn mouth and have only 15mm, and the high-tension switch cabinet of long-time running, repeatedly plug is pulled out, advanced to handcart repeatedly in framework, make the sagging amplitude of leading section of disposable separating plug even more serious.Cause fixed contact and moving contact to bump against during go-cart in the switch frame, cause following situation:

(1), withstanding handcart pushes away;

(2), cause moving contact to break sometimes;

(3), plug that sagging angle is big, before plug above the R angle slide into and damage plug above the plug by pressure;

(4), because of plug two side guards exceed contact, fixed contact is pressed on the baffle plate, conductive contact surfaces is little, send electricity to burn plug, produces arc light and causes phase fault.

The purpose of this utility model is to solve existing existing problem, and the disposable separating plug that resets of the two-wire contact of a kind of good reliability, flexible and changeable typhon mouth is provided.

The utility model is achieved in that and a plurality of contacts is housed on the riveting axle and separates riveted behind the two ends installation baffle plate with spacer ring.A spring shaft is installed between every group of contact of upper and lower two groups of contacts, and between the spring shaft that last contact, time contact are installed mounting spring.Baffle plate is fixedly connected on the conductive plate by hold-down screw, constitutes moving contact.It is characterized in that, contact, following contact have two contact points respectively on the formed moving contact, two contact points are not on a horizontal plane, and the distance that goes up contact and the back contact of following contact is greater than last contact, the distance of contact front contact is with the flexibility of increase moving contact down; It is the two-wire contact that said upward contact, following contact contact with conductive plate; The contact leading section is that circular arc links to each other with oblique line, makes and forms typhon mouth shape between contact and the following contact front end.

Advantage of the present utility model is, because the upper and lower contact of installing has two contact points respectively, contacts with conductive plate like this to the two-wire contact, plays a supporting role again.The front end of moving contact is a typhon mouth shape; In working order or under the vibration of pulling out, advancing, the intersection contact point of contact supports up and down, under the effect of spring, the open centre line of moving contact and the center line of fixed contact are remained on the same horizontal line, avoid the accident that dynamic and static contact bumps against in the switch cubicle.

Fig. 1 is a front view of the present utility model;

Fig. 2 is a vertical view of the present utility model.

Describe in detail below in conjunction with accompanying drawing:

As shown in the figure, a plurality of contacts 1 are housed on riveting axle 4, last contact has contact a, b, and following contact has contact c, d, and the leading section of last contact, following contact is that circular arc is connected with oblique line, makes between contact, the following contact front end and forms typhon mouth shape 10; Separate with spacer ring 5 between the contact 1, baffle plate 8 back riveteds are installed at two ends.A spring shaft 3 is installed between upper and lower contact, and between the spring shaft 3 that upper and lower contact is installed mounting spring 2, baffle plate 8 is fixedly connected on the conductive plate 7 by hold-down screw 6, constitutes moving contact.The contact point of last contact and conductive plate is a, b, and a, b point is not on a horizontal line, c, d point is not on a horizontal line, the contact point of following contact and conductive plate is c, d, when vibration occurring, a, d or b, 2 supports of c can make the contact piece reply immediately the position under spring work, and the fixed contact of guaranteeing moving contact and switch cubicle is on same horizontal line.

Claims

1, the disposable separating plug of being installed in a kind of power transmission and transformation control appliance high-voltage switch gear frame that resets is equipped with a plurality of contacts and separates riveted behind the two ends installation baffle plate with spacer ring on the riveting axle; Between every group of contact of two groups of contacts up and down, a spring shaft is installed, and between the spring shaft that last contact, time contact are installed mounting spring; Baffle plate is fixedly connected on the conductive plate by hold-down screw, constitutes moving contact; It is characterized in that contact, time contact have two contact points respectively on the moving contact, two contact points are not on a horizontal plane, and the distance of the back contact of last contact and following contact is greater than the distance between last contact and the following contact front contact; It is the two-wire contact that said upward contact, following contact contact with conductive plate; Last contact, following contact leading section are respectively that circular arc links to each other with oblique line, and last contact forms typhon mouth shape with following contact front end.