RU145155U1 - CONTACT FINGER CONTROL UNIT FOR DISCONNECT KNIFE - Google Patents

Abstract

1. The node adjustment of the contact fingers of the knife of the disconnector, containing a current-carrying knife, at least two pairs of spring contact fingers, cantilever mounted on the conductive tires, forming a connector and covering their current-carrying knife with a cam, characterized in that for each pair of spring The contact fingers are individually adjustable with adjusting pins mounted between a plate with smooth holes and a plate with threaded holes. 2. The node for adjusting the contact fingers of the knife of the disconnector according to claim 1, characterized in that the plate with smooth holes and the plate with threaded holes are made with dividing grooves.

Description

The utility model relates to the field of electrical engineering and can be used in the design of contact knives of disconnectors.

A contact knife of a high-voltage apparatus is known, comprising a current-carrying knife with a holder made in the form of two tires on which lamellae of elastic rods are cantilevered, forming a connector and covering the contact that enters into them when turned on, and spacers are installed between the tires, moreover, one of them adjustable length. (Utility model of the Russian Federation No. 13518 IPC H01H 31/02).

In this contact knife, the contact pressure is adjusted with the help of adjusting pins and nuts, which simultaneously fulfill the role of clamping elements. The disadvantage of this technical solution is the impossibility of separate adjustment of each pair of contact fingers, which can lead to different values of contact pressing in place of the electrical contact connection.

The objective of the proposed technical solution is the alignment of the contact pressure in the place of electrical contact of a current-carrying knife with fingers and a current-carrying knife with a cam and, consequently, an increase in the stability of electrical contact and the wear resistance of parts of a contact knife.

The problem is solved due to the fact that in the inventive device containing a current-carrying knife, with at least two pairs of spring contact fingers, cantileverly mounted on the conductive tires, forming a connector and covering the current-carrying knife with a cam included in them, for each pair of spring contact the fingers are provided for separate adjustment by means of adjusting pins installed between a plate with smooth holes and a plate with threaded holes, and a plate with smooth holes and a plate with threaded holes, in turn, are made with dividing grooves.

The essence of the proposed technical solution is illustrated by drawings (Fig. 1, 2, 3, 4, 5, 6).

In FIG. 1 shows a current-carrying knife with contact fingers and a current-carrying knife with a cam in the on state, the main view;

in FIG. 2 - current-carrying knife with contact fingers and current-carrying knife with a cam in the on state, top view;

in FIG. 3 - section of a current-carrying knife on contact fingers;

in FIG. 4 - section of a current-carrying knife along the adjusting pins;

in FIG. 5 is a section through a plate with dividing grooves with smooth holes;

in FIG. 6 is a section through a plate with dividing grooves with threaded holes.

The node for adjusting the contact fingers of the disconnector knife is a device that consists of a current-carrying knife 1 with spring contact fingers 2, conductive busbars 3 to which spring contact fingers 2 are pressed by means of a clamp bolt connection 4 and pads 5. Spring contact fingers 2 surround the contact fingers current-carrying knife with a cam 6. Under each pair of springy contact fingers there is an adjusting pin 7 with nut 8. An adjusting pin 7 is inserted at one end into the plate 9 with a smooth bore pation and the other end screwed into plate 10 with a threaded hole.

The adjustment of the contact fingers of the disconnector knife is as follows: the coupling bolt 4 is loosened, the adjusting pins 7 are screwed or unscrewed from the plate 10 with threaded holes and secured with nuts 8, thus changing the size between the contact fingers 2 and, accordingly, the contact pressing in the electrical contact connection.

Claims (2)

1. The node adjustment of the contact fingers of the knife of the disconnector, containing a current-carrying knife, at least two pairs of spring contact fingers, cantilever mounted on the conductive tires, forming a connector and covering their current-carrying knife with a cam, characterized in that for each pair of spring The contact fingers are individually adjustable with adjusting pins mounted between a plate with smooth holes and a plate with threaded holes. 2. The node for adjusting the contact fingers of the knife of the disconnector according to claim 1, characterized in that the plate with smooth holes and the plate with threaded holes are made with dividing grooves.