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Elastic shaft dynamic stress measuring structure

A technology of stress measurement and elastic shaft, which is applied in the field of aero-generators and can solve problems such as elastic shaft fracture

Pending Publication Date: 2021-04-20
SHAANXI AVIATION ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing elastic shaft often breaks during use. Therefore, it is necessary to analyze the dynamic characteristics of the elastic shaft and test for faults such as torsional resonance.

Method used

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  • Elastic shaft dynamic stress measuring structure
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Embodiment Construction

[0022] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0023] In addition, it should be noted that, unless otherwise specified and limited, words such as "installation", "connection" and "connection" used in the description of this application should be interpreted in a broad sense, for example,...

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Abstract

The invention belongs to the field of aero-generators, and particularly relates to an elastic shaft dynamic stress measuring structure, which comprises an elastic shaft, a hollow shaft, a strain gauge and a slip ring lead measuring instrument, wherein the hollow shaft comprises a first end and a second end opposite to the first end; the elastic shaft extends into the hollow shaft from the first end of the hollow shaft and is connected with the hollow shaft through a spline; the strain gauge is attached to the elastic shaft; a rotor in the slip ring lead measuring instrument is connected with the second end of the hollow shaft, a shell of the slip ring lead measuring instrument is fixed to a shell of the motor, and a signal line of the slip ring lead measuring instrument is led out from the rotor, stretches into the hollow shaft and then is connected with the strain gauge. By adopting the elastic shaft dynamic stress measuring device structure, the stress distribution of the same type of motor elastic shafts can be measured, the dynamic characteristic analysis can be carried out, and the fault problems such as torsion resonance can be tested.

Description

technical field [0001] The application belongs to the field of aeronautical generators, in particular to an elastic shaft dynamic stress measurement structure. Background technique [0002] The starter generator is an important accessory of the engine. When the engine is started, it is powered by the onboard battery or the ground power supply. It is used as a motor to drive the rotor of the engine to rotate, and then it is used as a generator to supply power to the aircraft power grid driven by the rotor. Among them, the elastic shaft in the starter generator is the core part of the generator, which mainly plays the role of transmitting torque, and its performance directly affects the normal operation of the generator. [0003] Normally, the elastic shaft in the motor is connected to the engine accessory casing through the spline end, and the elastic shaft cone fits closely with the hollow shaft of the motor rotor, and the torque is transmitted through the static friction be...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 姚勋姜宇闫磊
Owner SHAANXI AVIATION ELECTRICAL