RU2277277C2 - Current-collecting device - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: proposed current-collecting device has fixed and movable coaxial electrodes with current-conducting rings in-between; each ring accommodates two radial antifriction bearings clasped to inner surface of conducting ring with aid of flexible components and held in position by separator.

EFFECT: extended service life and enhanced current through device.

1 cl, 1 dwg

Description

The invention relates to electrical engineering, in particular to current-collecting devices containing movable and fixed coaxial electrodes.

A device is known that contains concentric fixed and rotating electrodes equipped with gear rims, elastic conductive rings located with a voltage between the electrodes and elastic fillers placed in them and mounted on shafts having each gear wheel kinematically connected with the gear rims of the electrodes [1].

The main disadvantages of this design are:

- kinematic error of the gears, which leads to forced slippage of the conductive rings relative to the electrodes;

- to create the necessary contact spot, it is required to create a tightness of the ring with an elastic element, which leads to cyclic operation of the conductive ring;

- temperature effects on the elastic element cause significant changes in the magnitude of the contact spot, and therefore, changes in the magnitude of the transition resistance.

Closest to the invention in technical essence is a device containing a movable and fixed coaxial electrodes, conductive rings in contact with a movable and stationary electrodes, pressure rings in contact with conductive rings, located with interference with them, and with a radial clearance with respect to movable and fixed electrodes [2].

The main disadvantages of the known device are:

- limited resource due to the effect of cyclic loads on thin-walled contacting rings during operation, the resource being determined by the length of the path of movement of the contacting rings along the movable and fixed coaxial electrodes;

- a limited amount of current through the device due to the relatively small contact spot, depending on the magnitude of the force of the pressure rings in contact with the conductive rings;

- a sufficiently large value of the transition resistance due to the additional contacting of conductive and pressure rings.

The objective of the present invention is to increase the service life of the device and increase the current through the device while maintaining a minimum size.

The essence of the invention lies in the fact that the collector device containing a movable and fixed coaxial electrodes, conductive rings in contact with the movable and fixed electrodes, and elastic elements, is equipped with two rolling bearings located radially inside the conductive rings installed between the movable and fixed electrodes, and interacting with their axes with elastic elements, and the outer diameter of the conductive rings is equal to the difference of the contacting radii of the coaxial electrodes.

By installing conductive rings without a gap and mechanical stress between the movable and fixed coaxial electrodes, the cyclic load (deformation) of the conductive rings is eliminated and the resource is increased, and the introduction of spring-loaded rolling bearings into the device provides a greater contact force and, therefore, a greater current through the device.

The drawing shows a General view of the current collection device.

The device contains a movable and fixed coaxial electrodes 1 and 2, conductive rings 3 are installed between them, inside of which there are two radially arranged rolling bearings 4, pressed against the inner surface of the conductive ring 3 by elastic elements 5 and held by a separator 6.

The current collector device operates as follows.

In a stationary position, the elastic elements 5, acting on the axis of the bearings 4, press the latter against the conductive ring 3 with the necessary force, thus ensuring its clamping to the movable and stationary coaxial electrodes 1, 2 and reliable contact between them. When the movable electrode rotates, the conducting ring 3 in contact with it, together with the separator 6 and bearings 4, also rotates, rolling along the movable and stationary electrodes 1 and 2.

The elastic element 5 can have a fairly gentle force characteristic, which ensures the stability of the contact forces and, accordingly, the magnitude of the contact spot for transmitting large current loads through the device.

Using the proposed device will significantly increase the resource and maintain the minimum dimensions of the device.

Information sources

1. Copyright certificate No. 1159096 A, cl. H 01 R 39/28.

2. Copyright certificate No. 1631641 A, cl. H 01 R 39/28.

Claims (1)

A current collector device containing movable and fixed coaxial electrodes, conductive rings in contact with the movable and fixed electrodes, and elastic elements, characterized in that the device is equipped with two rolling bearings located radially inside the conductive rings installed between the movable and stationary electrodes and interacting with axes with elastic elements, and the outer diameter of the conductive rings is equal to the difference of the contacting radii of the coaxial electrodes.