A turbine engine gear dynamic stress testing system

By setting a damping ring mounting base in the gear dynamic stress testing system, the damping ring can be easily replaced and the signal line can be stably connected, which solves the problems of long test cycles and large errors in the existing technology and improves the accuracy and efficiency of the test.

CN121612446BActive Publication Date: 2026-07-03AECC HUNAN AVIATION POWERPLANT RES INST
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Patent Information

Application Number
CN202610036972.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-01-13
Publication Date
2026-07-03
Estimated Expiration
2046-01-13

AI Technical Summary

Technical Problem

In existing technologies, the gear dynamic stress testing process is cumbersome, and the disassembly and reinstallation of the test piece leads to long cycles and errors. Strain gauges are easily damaged, and the test results are inaccurate.

Method used

A dynamic stress testing system for turbine engine gears is designed. By setting a damping ring mounting seat, the damping ring can be easily replaced and the signal line can be stably connected, avoiding the need to disassemble the test piece and reducing errors.

Benefits of technology

It simplifies the testing cycle, reduces the risk of signal line breakage, reduces testing errors, and improves the accuracy and efficiency of testing.

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Abstract

This invention belongs to the field of aero-engine testing technology and discloses a dynamic stress testing system for turbine engine gears. The system includes an electrical mounting base, a slip ring actuator, a drive shaft, a first damping ring, a damping ring mounting base, a second damping ring, and a signal line. The center hole of the test bevel gear is connected to one end of the drive shaft, and the shaft end of the test bevel gear is rotatably connected to a bearing housing. The electrical mounting base is detachably connected to multiple connecting plates, and the slip ring actuator is detachably connected to the electrical mounting base. The first damping ring engages with the back cone of the test bevel gear. The damping ring mounting base is sleeved on the outside of the bearing housing and detachably connected to multiple connecting plates. The second damping ring is disposed within the damping ring mounting base. One end of the signal line is fixedly connected to the front cone of the test bevel gear, and the other end passes through the center hole of the drive shaft and connects to the slip ring actuator. This invention solves the problems of low efficiency in dynamic stress testing of gears and other parts, easy damage to strain gauges during repeated installation and disassembly of the test piece, and large testing errors.
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Citation Information

Patent Citations

  • Thin-wall bevel gear shaft assembly modal test device and method

    CN114112381A

  • Damping ring vibration reduction design method based on geometrical information of bevel gear web

    CN116611182A