RU1817170C - Device for supplying current to rotating disk - Google Patents

Abstract

Usage: in devices for transmitting current to a rotating current collector. The inventive device for transmitting current to a rotating shaft containing a current-conducting conductor located above the contact surface of the shaft a cage of electrically conductive material, filled with electrically conductive bodies, and a push mechanism according to the invention, the cage is made in the form of a block covering the shaft with an annular cavity around the shaft and the shaft part located in the block is made in the form of an eccentric, while the annular cavity of the block can be filled with a powdery mass from the conductive impregnated antifriction material The design of the device for transmitting current to a rotating shaft provides reliable current transfer and a long service life of the device itself. 1 s.p. f-ly, 2 ill.

Description

The invention relates to devices for transmitting current to a rotating current collector.

The purpose of the invention is to improve the reliability of current transmission.

In FIG. 1 shows a device for transmitting current to a rotating shaft, sectional view; in FIG. 2 - section A - A in FIG. 1.

The device, which is part of the resistance seam welding machine, consists of a shaft 1 with an eccentric part 2 (eccentricity e) mounted in a housing 3 on bearings 4 and clamped by a nut 5. A current-carrying sleeve 6 is installed in the cavity of the housing 3 on the shaft 1 made in the form of a block covering the shaft 1. On the block around the shaft 1 there is an annular cavity 7 in which the eccentric part 2 of the shaft 1 is located. In the upper part of the cage 6

a hole 8 is made, which is open in the cavity 7. The cavity 7 and part of the hole 8 are filled with a conductive powder mass pressed from above by a pressure element 9 installed in the hole 8. To prevent leakage of the conductive mass, seals 10 are installed between the cage 6 and the shaft 1. The cage 6 electrically isolated from the housing 3 and removed from it. On top of the cage 6, a current-conducting plate is fixed 11. To cool the current-conducting elements in the housing 3, a cavity 12 is made, filled with oil.

The conductive powder mass is an anti-friction material. Before loading the conductive mass in the cavity 7 and 8 of the cage 6, it is impregnated with grease (oil).

+ J

w

Ј

00

S4

 ABOUT

The device operates as follows.

The electric current from the conductive plate 11 through the cage 6. and the conductive powder mass in the cavity 7 is transmitted to the eccentric part 2 of the rotating shaft 1. The impregnated powder mass acquires greater mobility due to reduced friction between the particles. By the pressure of the pressing element 9, a tight fit of the movable conductive mass to the shaft 1 and to the inner surface of the casing 6 is achieved. The eccentric part 2 of the shaft 1 located in the annular cavity 7 constantly agitates the conductive mass, preventing it from caking and compacting around the shaft 1 In addition, the surface of the eccentric part 2 from the direction of rotation of the shaft 1 creates additional pressure to the pressure of the pressing element 9, which increases the reliability of the contact of the conductive mass with the shaft 1.

The proposed device for transmitting current to a rotating shaft will significantly increase the reliability of current transmission due to

0

5

0

5

Claims (2)

1. A device for transmitting current to a rotating shaft, comprising a current-conducting conductor located under the contact surface of the shaft, a cage of electrically conductive material filled with electrically conductive bodies, and a pressure mechanism, characterized in that, in order to increase the reliability of current transmission, the cage is made in in the form of a block covering the shaft with an annular cavity around the shaft, while the shaft part located in the block is made in the form of an eccentric. 2. Device pop, 1, characterized in that the annular cavity of the block is filled with a powdery mass of conductive antifriction material impregnated with grease.