Eccentric wheel type horizontal shock spectrum measuring device and its installation and measuring method

Abstract

The invention relates to an eccentric wheel type horizontal impact spectrum measuring device and a mounting and measuring method thereof. The eccentric wheel type horizontal impact spectrum measuringdevice comprises a base and a top plate which are horizontally arranged up and down at intervals, wherein the space between the base and the top plate is supported by vertical plates on the two sides;a vertical shaft is jointly mounted by the base and the top plate, the two ends of the shaft are connected with the base and the top plate through bearings respectively, and the upper end of the shaft extends out of the top plate and an angle sensor is mounted at the end; an eccentric wheel with an oval structure is horizontally and fixedly arranged on the shaft between the base and the top plate; and torsion springs are fixedly arranged between the eccentric wheel and the top plate and between the eccentric wheel and the base respectively; when a test is carried out, the angle sensor is connected with a controller, the eccentric wheel is rotated under the action of an external impact load, the angle sensor transmits rotation angle information to the controller, and the eccentric wheel isreset under the action of an upper torsion spring and a lower torsion spring after the external load is removed; and the impact spectrum displacement is obtained according to the measured rotation angle information, and then the measurement of the horizontal impact spectrum is realized. The device is simple and compact and reliable in structure and convenient to operate and use, and the obtaineddata is reliable and effective.

Description

technical field [0001] The invention relates to the technical field of shock spectrum measurement, in particular to an eccentric wheel type horizontal shock spectrum measurement device and an installation and measurement method thereof. Background technique [0002] The shock environment generated by the shock explosion of the ship is the load input condition for the research on the shock resistance performance of shipboard equipment, and the nonlinear dynamic response phenomenon of the ship caused by the shock explosion is very complicated. Accurate and reliable ship shock environment data Usually obtained through experimentation. [0003] In the existing technology, the domestic ship shock environment testing equipment includes piezoelectric accelerometers, reed meters, vibrators and other mechanical shock spectrum measurement devices, which need to be verified by mutual cooperation in order to obtain a more accurate and reliable ship shock environment data. [0004] The...

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Problems solved by technology

Similarly, this method cannot eliminate the coupling effect of multi-directional impact loads, so the vibrator cannot be used for the measurement of horizontal impact environment data

[0006] Therefore, the existing mechanical shock spectrum measurement device cannot be applied to the measurement of the horizontal shock environment

However, when the horizontal shock environment and the vertical shock environment that the submarine is subjected to are basically equivalent, the situation will become more complicated. Therefore, it is necessary to develop a special mechanical horizontal shock spectrum measurement device

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