Insulating end cap applied to motor

Abstract

The invention discloses an insulating end cap applied to a motor, wherein the insulating end cap comprises an external circular end cap and an inner circular end cap. An outer circumferential surface of the inner circular end cap is in a first-level stepped shape; and a plurality of screw holes are uniformly arranged on a step end surface of the inner circular end cap. Installation through holes that are corresponded to the screw holes on the inner circular end cap are arranged on the end surface of the external circular end cap; and the external circular end cap is sleevedly installed on an outer circumferential surface of a boss of the inner circular end cap as well as the external circular end cap and the inner circular end cap are connected into one by a plurality of bolts. An insulating layer, which is manufactured by an alkali-free glass fabric, is arranged on the inner circumferential surface of the inner circular end cap, the step end surface of the inner circular end cap, the outer circumferential surface of the boss of the inner circular end cap, and a continuous external circular end surface of the outer circumferential surface of the boss; insulating sleeves are arranged between the installation through holes of the external circular end cap and the bolts; insulating pads are arranged between the outer end surface of the of the external circular end cap and the bolts, so that the the external circular end cap is separated from the inner circular end cap. According to the insulating end cap provided in the invention, it can be prevented that a shaft current generates electro erosion on a bearing; and meanwhile, the insulating performance of the insulating end cap itself and the heat dispersion performance of the bearing can meet correlated indexes and technological requirements.

Description

technical field [0001] The invention relates to an insulating end cover for an electric motor. Background technique [0002] Motors used for wind power generation have been operating in wide fields for many years, in harsh environments such as sea salt spray and humidity, and environmental factors have a great impact on the insulation performance of the motor. In addition, the shaft current generated when the motor rotates will cause electrical corrosion to the motor bearings, thereby reducing the service life of the motor. If the ordinary rolling bearings are replaced with insulated bearings, the generation of axial current can be suppressed. However, at present, my country's insulated bearings still rely on imports. Not only the imported supply cycle is long, the price is expensive, and the cost performance is unreasonable, the cost of the motor has risen sharply, and some The performance of imported bearings cannot meet the relevant conditions and requirements of existing...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the current rolling bearings (including imported bearings), the rolling bearings and motor insulation and heat dissipation problems that do not meet the relevant conditions of the motor, so as to provide an insulating end cover for the motor, which can prevent shaft current Electric corrosion occurs to the bearing, and the insulation performance of itself and the heat dissipation index of the bearing can meet the relevant indexes

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