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Ultrasonic suspension hub bearing for electric automobile

A technology for hub bearings and electric vehicles, which is applied to rolling contact bearings, rotating bearings, bearings, etc., can solve the problems of not using electric vehicles, achieve low replacement costs, strong environmental adaptability, and reduce frictional heat.

Active Publication Date: 2020-06-19
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology has not yet been applied to actual electric vehicles.

Method used

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  • Ultrasonic suspension hub bearing for electric automobile
  • Ultrasonic suspension hub bearing for electric automobile
  • Ultrasonic suspension hub bearing for electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-20 As shown, an electric vehicle ultrasonic suspension hub bearing includes a piezoelectric transducer 3, a bearing housing 2 and a cage assembly; there are 6 piezoelectric transducers 3, and each group of two is divided into three groups Installed on the three small boxes of the bearing box 2 in the circumferential direction; the cage assembly is installed in the circular through hole of the bearing box 2;

[0051] The piezoelectric transducer 3 includes a radiation head 8, a horn 9, an insulating sleeve 10, a rear cover 14 and a prestressed bolt 13;

[0052] The outer end surface of the radiation head 8 is a circular plane, and the inner end surface is a concave arc surface; the outer end of the radiation head 8 is connected with the horn 9; the outer end of the horn 9 has a flange; The above-mentioned prestressed bolts 13 pass through the rear cove...

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PUM

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Abstract

The invention discloses an ultrasonic suspension hub bearing of an electric automobile. The ultrasonic suspension hub bearing comprises piezoelectric transducers, a bearing box and a retainer assembly, the piezoelectric transducers are mounted on three small box bodies of the bearing box; the retainer assembly is mounted in a circular through hole of the bearing box; each piezoelectric transducercomprises a radiation head, an amplitude-change pole, an insulating sleeve, a rear cover plate and a prestressed bolt; the bearing box comprises a hexagonal box body and the three small box bodies; and the retainer assembly comprises two groups of large retainers, two groups of small retainers and balls. According to the ultrasonic suspension hub bearing of the electric automobile, friction between shafts can be reduced by utilizing the antifriction characteristic of ultrasonic vibration, friction heat generated in the operation process is reduced, the ultrasonic suspension hub bearing is superior to a double-row angular contact ball bearing used by an existing electric automobile in the aspects of limit rotating speed, precision, service life and the like; and relative movement of the balls is limited by the retainer, and the balls can only realizes rotation between the large retainers and an annular raceway or between the small retainers and the annular raceway.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle bearings, in particular to an electric vehicle ultrasonic suspension hub bearing. Background technique [0002] Bearings are commonly used parts in mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. At present, double-row angular contact ball bearings are generally used in automobiles. Since this kind of bearing can bear radial load and axial load at the same time, it can adapt to work under various high-speed working conditions and has a long service life, but it is still unavoidable. The wear and tear caused by the frictional heat generated by driving for a long time requires relevant technical personnel to carry out safety inspection and replacement of automobile wheel bearings on a regular basis, and foreign bearing companies occupy most of the market share of my coun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/18F16C32/04F16C33/40F16C37/00
CPCF16C32/044F16C32/0459F16C19/183F16C33/40F16C37/005F16C37/007
Inventor 杨亮丁海斌汤武初张恩赫
Owner DALIAN JIAOTONG UNIVERSITY
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