Slip ring cover of wound type motor

Abstract

The invention relates to a slip ring cover of a wound type motor, which comprises a motor shaft, a slip ring device, a brush gear and an end cover. The slip ring cover is characterized in that: the end cover is provided with a wire outlet box; the end cover is provided with a rear cover plate and an air outlet cover plate; the air outlet cover plate is arranged on the lower part of the end cover; filtering cover plates are arranged at the bottom of the end cover; and the filtering cover plates are two perforated plates, and non-woven fabrics are arranged between the two perforated plates. The slip ring cover has a compact and reasonable structure and beautiful appearance, reduces powdered carbon swirling in the whole cavity of the slip ring cover, avoids forming leakage channels, reduces electric arcing, and effectively prevents slip rings from being burnt and brushes from arcing so as to improve service life of the wound type rotor asynchronous motor.

Description

technical field [0001] The invention relates to a slip ring cover for a high-low voltage high-power motor, in particular to a cover specially designed for slip rings of some high-low voltage high-power motors with wound rotor three-phase asynchronous motors. Background technique [0002] In industries such as mines, metallurgy, cement plants, rolling mills, mills, and heavy-duty starting fans, the slip ring and brush of the wound rotor motor are connected to the starting resistor, and the rotor winding is short-circuited to work normally after the motor starts. In order to reduce the wear and heat of the brushes and slip rings throughout their service life, the design and manufacture of the slip ring cover is also very important. Some traditional slip ring covers do not have a good ventilation and cooling device, the heat of the slip ring and the brush cannot be taken away in time, resulting in aggravated wear of the brush, and a lot of carbon powder is produced. The traditi...

AI Technical Summary

Problems solved by technology

Some traditional slip ring covers do not have a good ventilation and cooling device, the heat of the slip ring and the brush cannot be taken away in time, resulting in aggravated wear of the brush, and a lot of carbon powder is produced. The traditional slip ring cover does not have a good carbon powder filter device. Carbon powder quickly covers the surface of the slip ring, or flies in the entire cavity of the slip ring cover, forming a leakage path, increasing the risk of arcing, causing the slip ring to burn out and the brush to flash over, so that the winding cannot be Type rotor asynchronous motor cannot be used reliably for a long time

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