Stiffness measuring device
A measuring device and stiffness technology, applied in the field of stiffness measurement, can solve the problems of spring bar processing error, non-uniformity of lateral stiffness of squirrel cage spring support, critical speed and vibration response difference, etc., to avoid measurement errors, quickly adjust, and guarantee The effect of accuracy
Active Publication Date: 2021-03-05
AECC HUNAN AVIATION POWERPLANT RES INST
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Problems solved by technology
[0003] Due to the error in the processing of the circumferential elastic strips of the squirrel cage bullet, the lateral stiffness of the squirrel cage bullet is different in different directions.
However, the inhomogeneity of the lateral stiffness of the squirrel cage spring will cause differences in the critical speed and vibration response of the rotors supported on it at different azimuths.
Method used
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[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solution...
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The disclosure relates to a stiffness measurement device, and relates to the technical field of stiffness measurement. The device is used to measure the transverse stiffness of the squirrel cage spring, and includes a fixing seat, a transfer mechanism and a measuring mechanism, wherein the transfer mechanism includes a transfer beam and a transfer seat, and the transfer beam has a first end and a second end, The first end of the transfer beam is fixed on the fixed seat, the second end of the transfer beam penetrates through the transfer seat and is rotatably fitted, and the squirrel cage spring is fixed on an end surface of the transfer seat away from the first end of the transfer beam, The measuring mechanism is arranged at the end of the squirrel cage spring away from the adapter seat, and the measuring mechanism can measure the lateral stiffness of the squirrel cage spring along the circumferential direction. When measuring the transverse stiffness in multiple directions, the present disclosure avoids repeated disassembly and assembly of the squirrel cage springs on the one hand, effectively improving the measurement efficiency; on the other hand, avoids the introduction of Other measurement errors ensure the accuracy of the measurement results.
Description
technical field [0001] The present disclosure relates to the technical field of stiffness measurement, in particular, to a stiffness measurement device. Background technique [0002] The stiffness parameter of the squirrel cage spring is an important parameter for the analysis of the dynamic characteristics of the aeroengine rotor system and the design of the critical speed, and its value directly affects the critical speed, mode shape, unbalance response and transfer characteristics of the rotor system. [0003] Due to the error in the processing of the circumferential elastic strips of the squirrel cage spring, the lateral stiffness of the squirrel cage spring is different in different directions. However, the inhomogeneity of the lateral stiffness of the squirrel-cage spring will cause differences in the critical speed and vibration response of the rotors supported on it at different azimuths. Therefore, in order to test the difference in the transverse stiffness of the ...
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IPC IPC(8): G01M5/00
Inventor 边杰陈亚农郑锦妮
Owner AECC HUNAN AVIATION POWERPLANT RES INST