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Bearing structure of motor

A bearing and front bearing technology, applied in the direction of the casing/cover/support, electrical components, electromechanical devices, etc., can solve the problems of bearing heating, thermal expansion, bearing damage, etc., and achieve extended service life, low noise, and good cooling conditions. Effect

Inactive Publication Date: 2010-06-30
SEC ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestically produced small and medium-sized motors with two poles generally use two ball bearings, and the fit between the bearing housing and the bearing chamber is mostly a transition fit. In addition, the bearings will heat up and expand when the motor is running. Axial "play" in the bearing chamber, causing bearing damage

Method used

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  • Bearing structure of motor
  • Bearing structure of motor

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0012] Such as figure 1 As shown, the present invention mainly includes shaft retaining ring 1, oil throwing pan 2, bearing outer cover 3, front bearing 4, bearing inner cover 6 and rear bearing 7 installed on the end cover 5, wherein the shaft retaining ring 1 Made of elastic material.

[0013] Such as figure 1 As shown, the front bearing 4 in the present invention adopts a ball bearing, and it is installed on the shaft extension end. The outer ring of the front bearing 4 is blocked by the bearing outer cover 3 and the bearing inner cover 6, and the inner ring is passed by the shaft retaining ring 1, the throwing The oil pan 2 is stuck; the rear bearing 7 adopts a column bearing, which is installed at the non-shaft extension end, and the outer ring of the rear bearing 7 is also blocked by the bearing outer cover 3 and the bearing inner cover 6, and the inner...

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PUM

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Abstract

The invention relates to a bearing structure of a motor, which comprises shaft circlips, a bearing outer cover, a front bearing, a bearing inner cover and a rear bearing, wherein the shaft circlips are arranged on an end cover; the front bearing is arranged on the shaft extending end; and the rear bearing is arranged on the non-shaft extending end. The outer rings of the front bearing and the rear bearing are clamped through the bearing outer cover and the bearing inner cover, and the inner rings thereof are respectively clamped by the circlips. The bearing structure is characterized in that the front bearing adopts a ball bearing, and the rear bearing adopts a roller bearing. The invention has the advantages that the structure is simple, compact and reasonable, the shaft extending end adopts the ball bearing, therefore the noise is small; the non-shaft extending end adopts the roller bearing, although the noise and heat generation amount of the roller bearing are large, the non-shaft extending end is provided with a fan, the noise can be covered by the fan, the generated heat can be quickly taken away by the fan, and the cooling condition is good; the roller bearing can overcome the defect of bearing damage as the rotary shaft is subject to heat extension and axially plays in the bearing chamber, thereby greatly prolonging the service life of the motor bearing.

Description

technical field [0001] The invention relates to an accessory part of a motor, in particular to a bearing structure of the motor. Background technique [0002] "Bearing structure" is a general term for the overall structure formed by the combination of bearings and matching parts (such as end covers, bearing inner and outer covers, etc.) in the domestic motor industry. The bearing is used as the connecting device between the stationary part and the rotating part of the asynchronous motor, and its quality and reliability determine the quality and life of the motor. In actual use, the faults of the bearing parts account for more than 1 / 2 of all motor faults, which shows the importance of the bearing structure. At present, domestically produced small and medium-sized motors with two poles generally use two ball bearings, and the fit between the bearing housing and the bearing chamber is mostly a transition fit. In addition, the bearings will heat up and expand when the motor is...

Claims

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Application Information

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IPC IPC(8): H02K5/16
Inventor 王建裕
Owner SEC ELECTRIC MACHINERY
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