Shafting dynamic balance experimental bench

Abstract

The present invention discloses a shafting dynamic balance experiment table which comprises a base and an electric motor whereon, a rotor, a coupling, a bearing base, a sensor base and a weighting disc installed on the rotor, the invention is characterized in that the bearing base and sensor base and three locating surfaces on the base frames are provided with corresponding matching surfaces in order to guarantee the radial matching among the bearing base and the sensor base and base frame, the shafting dynamic balancing experimental table can analog the unbalanced constrained oscillation of the flexible rotor shafting, and effectively reproduce the unbalanced phenomenon generated by the large-scale rotating machinery, and the invention is used for the researching of the rotor dynamic balance and the method. The rotary spped of the experiment table, the shafting hardness, the style of the electric vortex sensor and the style of the coupling are all adjustable. The experiment table has the advantages of reasonable designing, convenient and accurate locating, small and beautiful external appearance, and the invention provides an effective and convenient experiment facility for vibration testing and balance researcher.

Description

technical field [0001] The invention relates to a test bench in the field of vibration monitoring and control of rotating machinery, in particular to a shaft dynamic balance test bench. This shaft dynamic balance test bench can simulate the unbalanced forced vibration of the flexible rotor shaft, effectively reproduce the unbalance phenomenon produced by large rotating machinery, and is used for the research of rotor dynamic balance theory and method. Background technique [0002] Unbalance is the most common failure of large rotating machinery, and its handling process is also the most complicated among all failures. After decades of research and development, the current balance methods for flexible rotor on-site dynamic balance can be classified into two categories: modal balance method and influence coefficient method. After the efforts of many scholars, both methods have been improved a lot. The hybrid balance method proposed by Parkinson and Darlo...

AI Technical Summary

Problems solved by technology

At present, Bently Company of the United States has produced a single-axis dynamic balance test bench, but there is no balance test equipment connected into a shaft system.

The bearing seat and base of the rotor vibration simulation test bench produced by Dongda Vibration Measuring Instrument Factory in China are fixed by slider guide rails, and the sensor bracket and base are fixed by unilateral screws. The positioning accuracy is low, and it is easy to introduce non-power frequency faults and confuse balance faults. Research

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