A multi-rotor assembly online dynamic balance test device
A test device and multi-rotor technology, applied in the field of mechanical vibration and rotors, can solve problems such as unbalance, achieve the effect of solving unbalance, improving balance effect, and improving accuracy
Active Publication Date: 2020-02-21
JIANGSU UNIV
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Problems solved by technology
The existing research objects are all series rotors, and there are few studies on the dynamic balance of multiple parallel rotors. However, for such a research object composed of multiple parallel rotors and multiple supports, the reasons for its imbalance and vibration change are all It is different from multiple series rotors, so it is necessary to conduct related research on multiple parallel rotors
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[0062] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0063] The multi-rotor assembly online dynamic balance test device of the present invention includes a balance analysis system 1, a data acquisition system 2, detection sensors, a test bench and a transmission structure.
[0064] The detection sensor includes a vibration test sensor 301 and a rotational speed measurement device; the vibration test sensor 301 is used to collect the vibration signal of each rotor; the rotational speed measurement device is used to collect the rotational speed of the rotor;
[0065] The test bench includes at least two parallel rigid rotors, a motor 407 and a stand 408; the rotor is mounted on the stand 408; the motor 407 is fixed on the stand 408, and the motor 407 is connected to the rotor through a transmission structure;
[006...
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The present invention provides a multi-rotor assembling online dynamic balance test device. The device comprises a dynamic balance analysis system, a data collection system, a detection sensor, a testbench rack and a transmission structure. The data collection system is configured to transmit vibration signals to the dynamic balance analysis system and perform corresponding analysis to obtain response signals generated after a driving rotor is excited by driven rotors, and compare the response signals with an excitation response model obtained through theoretical derivation to determine a correction factor of the model so as to improve the accuracy of the model. Transmission paths appearing in the transmission system can be divided into six basic paths according to the calculation mode ofthe rotor transmission piece wrap angle, and each path corresponds to one set of correction factors. The multi-rotor assembling online dynamic balance test device facilitates calculation of the transmission relation of the vibration of the rotors to provide basis for the parallel multi-rotor unbalance problem, and can be used for balance of rotors in various industries such as the machinery, theaviation and the electric power to facilitate vibration reduction and noise reduction of the whole system, reduction of wearing and prolonging of the service life of the machine.
Description
technical field [0001] The invention belongs to the technical field of mechanical vibration and rotors, and in particular relates to an online dynamic balance test device for multi-rotor assembly. Background technique [0002] Rotating machinery occupies a considerable proportion of equipment used in modern industry and is an important part of mechanical systems. For rotating machinery, especially for high-speed rotating machinery, vibration is the main cause of equipment failure, and rotor imbalance is one of the common faults of rotating machinery. Studies have shown that more than 60% of mechanical failures are caused by unbalanced rotors, which shows the importance of solving the problem of unbalanced rotors. [0003] The problem of multi-rotor dynamic balance has been studied in China: in 1984, Yu Wenhu and others proposed a new method of shafting balance. According to the general law of shafting unbalance and vibration transmission characteristics, the speed-up charac...
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IPC IPC(8): G01M1/22
CPCG01M1/22
Inventor 李耀明陆佳慧唐忠王新忠张浩天
Owner JIANGSU UNIV