Ultrahigh-speed revolving cup assembly directly driven by iron-loss-free permanent magnet brushless motor

Abstract

The invention discloses an ultrahigh-speed revolving cup assembly directly driven by an iron-loss-free permanent magnet brushless motor, which comprises a fixed sleeve, a rotating part, a permanent magnet suspension bearing part and a motor, and is characterized in that the rotating part comprises a shaft rod and a revolving cup head; the permanent magnet suspension bearing part comprises a radialbearing, the radial bearing comprises an inner permanent magnet ring and an outer permanent magnet ring which are coaxially arranged, the outer permanent magnet ring is fixedly installed on the innerwall of the fixing sleeve, radial magnetization is adopted for the inner permanent magnet ring and the outer permanent magnet ring, and the polarity of the outer wall of the inner permanent magnet ring is the same as that of the inner wall of the outer permanent magnet ring; the motor comprises an armature assembly and a rotor assembly, the armature assembly is fixedly installed on the fixing sleeve, and the rotor assembly is fixedly connected with the shaft rod. A compact permanent magnet suspension bearing structure is adopted, so that a rotating component has smaller rotational inertia under the condition of the same mass, the radial centrifugal force of a rotor component is smaller, and the use amount of permanent magnets in the permanent magnet suspension bearing is reduced.

Description

technical field

[0001] The invention belongs to the technical field of rotor spinning, and more specifically relates to an ultra-high-speed rotor assembly. Background technique

[0002] my country is a traditional big textile country, but compared with traditional western textile powerhouses, although my country's textile industry is large in scale, the level of technical equipment is generally low, especially in terms of rotor spinning machines, which occupy an important position in mid-to-high-end spinning equipment. There is a big gap between textile equipment and foreign advanced technology. Rotor spinning is the most mature, fastest-growing and most widely used new spinning technology in textile technology. By 2017, China's rotor spinning spindles have reached more than 4 million, accounting for 51% of the world's total output. In recent years, foreign advanced spinning equipment providers have continued to develop in the high-speed, multi-spindle, and automation aspect...

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