Wire-wound three-phase asynchronous motor with external electric brush and external slide ring

Abstract

The invention relates to a wire-wound three-phase asynchronous motor with an external electric brush and an external slide ring. The motor comprises a stator core, a stator winding, a stand, a rotor core, a rotor winding and a rotary shaft; the rotor winding is correspondingly connected with a stator binding post in a stator junction box outside the stand through an outgoing line passing through a leading wire groove of the stand; the rotor winding is correspondingly connected with the slide ring fixed on the rotary shaft through an outgoing line passing through a leading wire groove of the rotary shaft; the electric brush on an electric brush frame is correspondingly and slidably contacted with the slide ring; and the shaft extension end of the rotary shaft is supported on a front end cover at one end of the stand through a bearing. The motor is characterized in that the non-shaft extension end of the rotary shaft is supported on a rear end cover at the other end of the stand through a bearing; a slide ring cover for assembling the electric brush frame covers the slide ring and the electric brush which are positioned at the outer side of the rear end cover, and is connected with the rear end cover; the electric brush is correspondingly connected with the rotor binding post in the stator junction box through an outgoing line passing through a conductor hole on the rear end cover and the leading wire groove of the stand; and a fan is installed on the non-shaft extension end, extending out of the slide ring cover, of the rotary shaft. The motor provided by the invention has the advantages of compact structure, light weight and low cost.

Description

technical field [0001] The invention relates to a motor characterized by its structure, in particular to a winding type three-phase asynchronous motor with external brushes and slip rings. Background technique [0002] We know that the wound three-phase asynchronous motor is mainly composed of two basic parts, the stator and the rotor. The stator is used to generate a rotating magnetic field. It is generally composed of three parts: the stator core, the stator winding and the machine base. The stator windings are respectively connected to the terminals of the stator junction box outside the machine base through the lead wires. The rotor is the rotating part of the motor, which can drive other mechanical equipment to rotate and do work. It is composed of three parts: the rotor core, the rotor winding, and the rotating shaft used to support the rotor and transmit torque. There are three mutually insulated slip rings on the non-shaft extension end of the rotating shaft, and th...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the prior art, such as the heavy weight and high cost caused by the thick shaft diameter of the motor shaft, the inconvenient installation and maintenance of the slip ring junction box, and the inability to install the fan, the present invention provides a motor with reasonable design, compact structure, and light weight. , Low-cost brushes, external wound three-phase asynchronous motors with slip rings

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