SU1341703A1 - Multispeed unit - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to multi-speed asynchronous electric motors with coaxial rotors. The aim of the invention is to increase the numbers. speed steps. The motor contains an output shaft 1, Yu placed in bearings 2, to-rye located in the bearing pillars 3, On the shaft 1 is fixed internal rotor 4 with a multiphase winding 5 fed through slip rings 6. Intermediate rotor 7 is freely mounted on the shaft by means of bearings 8 . On the outer and inner surfaces of the rotor there are short-circuited windings. A stator 10 is placed on the shaft by means of bearings 9, a winding 11 is located on the inner surface of which is fed through contact rings 12. A pulley 13 is placed on the outer surface of the stator 10, by which it is driven into rotation from a separately located engine. The motor produces several stages of rotation. 1 il. a (L 00 N o so lh

Description

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The invention relates to electrical engineering, in particular to multi-speed 2-ibiM asynchronous electric motors with coaxial rotors.

The purpose of the invention. is an increase in the number: and rotation frequency stools.

The drawing shows a multi-speed asynchronous electric motor, a general view,

The electric motor contains an output shaft 1 J located in bearings 2, which are located in bearing struts 3. An internal rotor 4 with a multiphase winding 5 fed through contact rings 6 is rigidly fixed on shaft 1. The intermediate rotor 7 is freely mounted on the shaft of bearings 8. On the outer and inner surfaces of the rotor are short-circuited windings. On the shaft, by means of bearings 9, a stator 10 is placed, on the inner surface of which a winding 11 is located, fed through contact rings 12. A pulley 13 is placed on the outer surface of the stator 10, by means of which it is rotated from a separately located engine

The unit works as follows.

The outer housing of the stator 10 is rotated by a separate motor. When a multiphase voltage is applied to the winding 11, an intermediate rotor 7, in which is placed on the outer and inner surfaces

Editor T. Parfenova

Compiled by V.Krasnov Tehred m. Khodanych-

Order; 4443/56

Circulation 659 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

32

short-circuited windings, starts vras, with a speed n relative to the stator 10. When a multiphase voltage is applied to the winding 5 of the inner rotor 4 rigidly fixed on the output shaft, the rotor begins to rotate at a speed P2. relative to the intermediate rotor.

Thus, we obtain two rotation speeds of the shaft. When the stator housing 10 rotates by means of a pulley 13 from a separately located engine, the number of steps of the output shaft rotation parts increases.

Claims (1)

Invention Formula A multi-speed unit containing an asynchronous junction motor with a cylindrical stator and an inner rotor, in whose slots of the cores multiphase windings are placed, and an intermediate rotor coaxially placed in the bore of the stator; In order to increase the number of speed stages of rotation, it is equipped with additional bearings with struts and a pulley, the shaft is mounted on additional bearings with struts and the pulley is placed on the outer surface of the stator to bring it in rotation from a separate motor. Shekmar Proofreader