Enclosed debris containment support bearing assembly, motor and rail switching device

CN121162602BActive Publication Date: 2026-07-14HANGZHOU HENGYE MOTOR MANUFACTURE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU HENGYE MOTOR MANUFACTURE CO LTD
Filing Date
2025-09-16
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In the existing technology, elastic washers are prone to fatigue and breakage under long-term alternating loads and frequent deformation, which can cause moving parts to jam and lead to safety accidents, especially in high-speed operating equipment.

Method used

A constraint ring is installed between the support bearing and the elastic washer to form a relatively closed containment space. The constraint ring is made of high-hardness wear-resistant material, and the radial clearance is designed to be smaller than the maximum fragment size of the elastic washer to prevent fragments from interfering with the movement of the support bearing.

Benefits of technology

It effectively prevents elastic washer fragments from interfering with the bearing support, eliminates potential system failure risks, and improves equipment reliability and safety. It is especially suitable for high-reliability fields such as railways and medical equipment.

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Abstract

The application relates to a closed fragment-constrained support bearing assembly, a motor and a rail switching device. The support bearing assembly comprises a support member, a support bearing, an elastic washer and a constraint ring. The support member is provided with an axially-through bearing assembly cavity, one end of the bearing assembly cavity being used for interference fit with the support bearing. The support bearing is provided with an inner ring hole for the rotor shaft to pass through. The end side of the support bearing and the inner side of the support member have a first containing space. The elastic washer and the constraint ring are arranged in the first containing space. At least part of the constraint ring is in a ring structure and is arranged axially between the elastic washer and the support bearing. The constraint ring and the support member jointly define and form a relatively closed second containing space, which is used for constraining fragments when the elastic washer is broken and preventing the fragments from interfering with the movement of the support bearing.
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Citation Information

Patent Citations

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    CN113931935A

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    CN203355852U