A device and method for measuring the torsional moment of a helicopter pull-tow strip

By designing a torsional torque measuring device for helicopter torsion bars, the device utilizes central and lateral supports to restrict degrees of freedom and directly measures the torque of the torsion angle using a torque wrench. This solves the problem of complex measurement in existing technologies and achieves a simple, intuitive, and economical measurement effect.

CN119666211BActive Publication Date: 2025-11-11AVIC HUIYANG AVIATION PROPELLER
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Patent Information

Application Number
CN202311209414.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-09-19
Publication Date
2025-11-11
Estimated Expiration
2043-09-19

AI Technical Summary

Technical Problem

Existing technologies for measuring the torsional torque of helicopter-mounted torsion bars are complex, requiring high-precision equipment and complex calculations, resulting in a cumbersome and costly measurement process.

Method used

A torsional torque measuring device for helicopter torsion bars was designed. The device restricts the Z, X, and Y degrees of freedom of the torsion bars through central and side supports, and directly measures the torque of the torsion angle using a torque wrench, thus simplifying the measurement process.

Benefits of technology

It enables simple and intuitive measurement of torsional torque, reduces measurement costs, decreases manpower requirements, and improves measurement efficiency.

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Abstract

This invention relates to a device and method for measuring the torsional torque of a helicopter torsion bar, comprising: a mounting base, with a support area formed on the upper part of the mounting base, the support area having a central support located in the middle and side supports symmetrically arranged on both sides, the central support restricting the Z-axis degree of freedom of the torsion bar; a torsion part, rotatably connected to the side supports, the rotation angle α being the torsion angle of the applied force, and the torsion part fixing both ends of the torsion bar, becoming an integral part with the torsion bar, and restricting the X-axis and Y-axis degrees of freedom of the torsion bar; a pre-set rotation hole for a torque wrench on the torsion part; and a locking part, the locking part locking the torsion part and the side supports, the torque wrench rotation directly measuring the torque corresponding to the torsion angle. This device can directly measure the torsional torque of the torsion bar without complex calculations, the measurement is simple, and the results are easier to obtain. Compared with indirect measurement methods, the measurement method of this invention is simple to operate, provides intuitive results, is low in cost, requires less manpower, and is economical.
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