Bidirectional different torque friction brake testing equipment and method

By designing bidirectional different torque friction brake test equipment, the difficult problems of friction brake transmission characteristics and slip torque testing in thermal vacuum environment are solved, and precise control of friction brakes and smooth operation of space mechanism products are achieved. It is suitable for testing under various environmental conditions.

CN116429311BActive Publication Date: 2025-10-03SHANGHAI AEROSPACE SYST ENG INST
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Patent Information

Application Number
CN202310479870.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-28
Publication Date
2025-10-03
Estimated Expiration
2043-04-28

AI Technical Summary

Technical Problem

Existing technologies make it difficult to accurately test the transmission characteristics and slip torque of friction brakes in a thermal vacuum environment, especially as the demand for precise control of spatial mechanism products is not met.

Method used

A bidirectional different torque friction brake test equipment is designed, including components such as a reversing motor, a reversing reducer, a mechanical brake, and a speed torque sensor. It can test the dynamic and static transmission characteristics of the friction brake under normal temperature and pressure and thermal vacuum environments, and realize slip torque testing through different motor and clutch combinations.

Benefits of technology

It realizes accurate testing of friction brakes under different environmental conditions and is suitable for high-speed and low-speed products. It has high precision, diversified functions, simple structure, stable and reliable operation, and is suitable for smooth operation and overload protection of transmission chains of space mechanism products.

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Abstract

The present invention discloses bidirectional, variable-torque friction brake testing equipment and methods, comprising: a reverse drive assembly, a fixture for a test piece, a test assembly, and a forward drive assembly, all mounted axially in sequence on a base plate. The product under test is mounted within the fixture for the test piece via a bearing, the input shaft of the test piece is spline-connected to the input shaft of the fixture for the test piece, and the output shaft of the test piece is spline-connected to the output shaft of the fixture for the test piece. The present invention can be used to test the dynamic and static transmission characteristics and slip torque of the friction brake product under test at room temperature and pressure, as well as the transmission performance and slip torque of the friction brake product under test in thermal or vacuum environments. It can also be used for life testing of the friction brake product under test, among other applications.
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