CN204334176U

CN204334176U - A kind of Novel motor end cap insulation system

Info

Publication number: CN204334176U
Application number: CN201520018272.4U
Authority: CN
Inventors: 韩利峰; 张景利; 赵汝彬
Original assignee: Tianjin Seri Machinery Equipment Corp Ltd
Current assignee: Tianjin Seri Machinery Equipment Corp Ltd
Priority date: 2015-01-12
Filing date: 2015-01-12
Publication date: 2015-05-13
Anticipated expiration: 2025-01-12

Abstract

The utility model discloses a kind of Novel motor end cap insulation system, relate to technical field of motors, comprise support, end cap body, insulated bearing pedestal, bearing, rotating shaft and bearing holder (housing, cover); The upper end of described end cap body is fixedly connected with support, it is characterized in that: bearing holder (housing, cover) comprises bearing inner sleeve and bearing outside; The cross section of described bearing outside is L-shaped; Described bearing inner sleeve is socketed on bearing, and the lower end of described end cap body is fixedly connected with bearing outside by bolt; Between the upper surface and the lower surface of bearing outside of described bearing inner sleeve, be folded with imines film, between the sidewall and bearing inner sleeve of described bearing outside, be folded with imines film and insulation board.Because the utility model is folded with insulation imines film and epoxy resin and the fabric swatch that insulate between bearing inner sleeve and bearing outside, fully block the loop that may be made up of axle, bearing, end cap, support because of the shaft current produced, avoid the generation of shaft current, therefore there is higher security performance.

Description

A kind of Novel motor end cap insulation system

Technical field

The utility model relates to technical field of motors, particularly relates to a kind of for variable-frequency motor or the Novel motor end cap insulation system of being powered by frequency-variable controller and the 1.5MW wind-driven generator produced now using.

Background technology

In the motor of inverter supply, the loop formed due to axle, bearing, end cap, support produces shaft current because being subject to the impact of transducer element, and shaft current, by producing very large harm to bearing during bearing, is accumulated to a certain degree, causes bearing failure.And adopt insulation bearing not only costly and also useful life shorter; When keeping in repair medium-and-large-sized motor, especially producing in 1.5MW wind-driven generator process in maintenance, often finding disassembling in process, bearing substantially all heavy wear or scrap, when especially motor uses inverter supply.At present keep in repair manufacture wind-driven generator time especially true, even if adopt insulation bearing, because the reason such as insulation bearing insulating barrier is very thin, its useful life is not long.Bearing insulation inefficacy main cause is that high-frequency harmonic electric current punctures instantaneously to bearing film, and the accumulative washboard line that produces of electric discharge causes bearing failure.For this kind of phenomenon, devise a kind of Novel motor end cap insulation system, not only reduce the high cost of buying insulation bearing, and structure is simple, better performances, improve the reduction in useful life that motor is led because of bearing failure.

Utility model content

The technical problems to be solved in the utility model is: provide the Novel motor end cap insulation system that a kind of security performance is high.

The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:

A kind of Novel motor end cap insulation system, comprises support, end cap body, insulated bearing pedestal, bearing, rotating shaft and bearing holder (housing, cover); The upper end of described end cap body is fixedly connected with support, it is characterized in that: described bearing holder (housing, cover) comprises bearing inner sleeve and bearing outside; The cross section of described bearing outside is L-shaped; Described bearing inner sleeve is socketed on bearing, and the lower end of described end cap body is fixedly connected with bearing outside by bolt; Between the upper surface and the lower surface of bearing outside of described bearing inner sleeve, be folded with imines film, between the sidewall and bearing inner sleeve of described bearing outside, be folded with imines film and insulation board.

The advantage that the utility model has and good effect are: because the utility model is folded with insulation imines film and epoxy resin and the fabric swatch that insulate between bearing inner sleeve and bearing outside, fully block the loop that may be made up of axle, bearing, end cap, support because of the shaft current produced, avoid the generation of shaft current.Further guarantee insulation effect in addition, this structural insulation part, through 4000V power frequency withstand test, guarantees that insulation was not lost efficacy.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is partial enlarged drawing of the present utility model.

Wherein: 1, support; 2, end cap body; 3, bolt; 4, insulated bearing pedestal; 5, bearing; 6, rotating shaft; 7, bearing outside; 8, insulation board; 9, imines film; 10, epoxy resin; 11, bearing inner sleeve.

Embodiment

For utility model content of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Refer to Fig. 1 and Fig. 2, a kind of Novel motor end cap insulation system, comprise support 1, end cap body 2, insulated bearing pedestal 4, bearing 5, rotating shaft 6 and bearing holder (housing, cover); The upper end of described end cap body 2 is fixedly connected with support 1, and described bearing holder (housing, cover) comprises bearing inner sleeve 11 and bearing outside 7; The cross section of described bearing outside 7 is L-shaped; Described bearing 6 inner sleeve is socketed on bearing 5, and the lower end of described end cap body 2 is fixedly connected with bearing outside 7 by bolt 3; Between the upper surface and the lower surface of bearing outside 7 of described bearing inner sleeve 11, be folded with imines film 9, between the sidewall and bearing inner sleeve of described bearing outside, be folded with imines film 9 and insulation board 8; The end face of described bearing inner sleeve 11 and bearing outside 7 junction is perfused with epoxy resin 10.Shown in Fig. 1 and Fig. 2: if there is no insulation board 8, imines film 9, support 1, end cap body 2, insulated bearing pedestal 4, bearing 5 and rotating shaft 6 can form a loop by the motor other end, can produce serious harm when inverter supply to bearing 5.This specific embodiment adds imines film 9 and insulation board 8 between bearing inner sleeve 11 and bearing outside 7, effectively can prevent the generation of shaft current.

Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.

Claims

1. a Novel motor end cap insulation system, comprises support, end cap body, insulated bearing pedestal, bearing, rotating shaft and bearing holder (housing, cover); The upper end of described end cap body is fixedly connected with support, it is characterized in that: described bearing holder (housing, cover) comprises bearing inner sleeve and bearing outside; The cross section of described bearing outside is L-shaped; Described bearing inner sleeve is socketed on bearing, and the lower end of described end cap body is fixedly connected with bearing outside by bolt; Between the upper surface and the lower surface of bearing outside of described bearing inner sleeve, be folded with imines film, between the sidewall and bearing inner sleeve of described bearing outside, be folded with imines film and insulation board.