Novel electric brush device with touching kept based on centrifugal force

Abstract

The invention discloses a noel electric brush device with touching kept based on a centrifugal force. The novel electric brush device comprises a rotating shaft, an outer sleeve and a slide block. The rotating shaft is arranged in the outer sleeve and is assembled coaxially with the outer sleeve. The slide block is rotatably arranged between the outer sleeve and the rotating shaft. The slide block is electrically connected with the upper end of the rotating shaft through a flexible wire. The lower end of the slide block is provided with a guide rail which is attached to the outer sleeve. A projected plate which pushes the slide block to perform circular motion is arranged in the radial direction of the rotating shaft. The project plate makes the slide block perform simultaneous movement with the rotating shaft so that good contact conduction of the device is kept. According to the novel electric brush device with touch kept based on the centrifugal force, no pressure device is required; touching is realized by means of gravity and the centrifugal force; the noel electric brush device can be adapted with a high-rotating-speed or even a superhigh-rotating-speed working environment; high contact effect is realized; and service life of the electric brush is prolonged.

Description

technical field [0001] The invention belongs to a wire contact piece, in particular to a novel electric brush device which maintains contact based on centrifugal force. Background technique [0002] A brush is a conductive component that makes sliding contact with a moving part to form an electrical connection. It has good electrical conductivity, thermal conductivity and lubricating properties, and has certain mechanical strength and reversible spark instinct. It is commonly used in generators, rectifier motors and other devices. In aerospace, atomization and powder making equipment and other technical fields, brushes are also indispensable, and the requirements for brushes are extremely high. The working environment requires that the electrode speed is as high as 25000r / min, and the current is as high as 2000A, or higher. [0003] The existing brush device generally adopts end surface contact or cone surface contact, etc., mainly by applying pressure on the top of the bru...

AI Technical Summary

Problems solved by technology

However, in a high-speed or even ultra-high-speed environment, it is very important to maintain the contact conduction of the brush. The traditional brush device will inevitably have uneven pressure, resulting in uneven or accelerated wear, reducing the service life of the brush, and even making the Uneven current distribution leads to overheating and sparks of individual brushes; due to the influence of its external structure and brush holder, the external size is large

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