Rigidity measurement device
A measuring device and stiffness technology, applied in the field of stiffness measurement, can solve the problems of critical rotational speed and vibration response difference, non-uniformity of lateral stiffness of squirrel cage spring support, processing error of spring strip, etc., so as to avoid measurement error, quickly adjust and guarantee The effect of accuracy
Active Publication Date: 2019-06-14
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.
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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 invention relates to a rigidity measurement device, related to the technical field of rigidity measurement. The device is used for performing transverse rigidity measurement for a mouse cage elastic support, and comprises a fixed base, a change-over mechanism and a measurement mechanism, wherein the change-over mechanism comprises a change-over beam and a change-over base, the change-over beamcomprises a first end and a second end, the first end of the change-over beam is fixed on the fixed base, and the second end of the change-over beam penetrates through the change-over base and is inrunning fit; the mouse cage elastic support is fixed on an end face, far away from the first end of the change-over beam, of the change-over base; the measurement mechanism is arranged at one end, faraway from the change-over base, of the mouse cage elastic support; and the measurement mechanism can measure the transverse rigidity of the mouse cage elastic support along a circumferential direction. According to the rigidity measurement device provided by the invention, when transverse rigidity of multiple directions is measured, on one hand, repeated assembling and disassembling works for themouse cage elastic support are avoided, and measurement efficiency is improved effectively; and on the other hand, bringing other measurement errors due to change of mounting conditions of the mousecage elastic support is avoided, and accuracy of a measurement result is guaranteed.
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 ...
Claims
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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