Three dimensions vibration measuring apparatus and method

Abstract

A three-dimensional vibration measuring device comprising: a support bracket, three cable-type displacement sensors, and a processor; the support bracket is provided with three mounting parts, and the mounting parts are fixedly located on the three axes (x, y and z) normal to each other in a three-dimensional coordinate system respectively; each of the three cable-type displacement sensors comprises a main body (4,5,6) and a cable pulled out from the main body (4', 5' and 6'), the main bodies are mounted on the mounting parts respectively, and the ends of the cables can intersect at the measuring point (7) in a space limited by the main bodies and the origin of the three-dimensional coordinate system; the processor communicates with the three cable-type displacement sensors via a data acquisition device and processes the obtained data. Processing the measured signals with the vibration measuring device is simple and more accurate vibration displacement values can be obtained. Moreover, the vibration measuring device is simple in structure, easy in mounting and low in cost. The vibration measurement method is simple to operate and is easy to implement.

Description

technical field [0001] The invention relates to a three-dimensional space vibration measuring device and method. Background technique [0002] In the field of heavy industry machinery, some complete machines (such as pump trucks) have long boom structures. There is more or less vibration at the end of the long boom structure during work, which may affect the positioning of the working face and may cause safety accidents. After the design and development of the whole machine, it is necessary to carry out this test before leaving the factory to ensure the normal use of users. However, in vibration testing, single-degree-of-freedom vibration measuring devices are relatively common, while three-dimensional space vibration measuring still lacks corresponding devices and methods. [0003] In the existing technology, the following two methods are generally used to test the vibration: (1) The existing remote vibration test generally measures the acceleration signal of the measured...

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Problems solved by technology

[0005] The object of the present invention is to provide a three-dimensional space vibration measuring device and method to solve the problems of complex structure, high cost and low measurement accuracy of the vibration measuring device in the prior art as mentioned above

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