• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2022, Vol. 58 ›› Issue (11): 170-182.doi: 10.3901/JME.2022.11.170

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Electromechanical Coupling Dynamics Model and Its Verification of Dual Path Propelled Lifting Mechanism of Bridge Crane

LI Yan1, XIANG Dong2, WANG Junying3   

  1. 1. China United Engineering Co. Ltd., Hangzhou 310000;
    2. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;
    3. Department of Mechanical Engineering, Tsinghua University, Beijing 100085
  • Received:2021-06-07 Revised:2022-03-08 Online:2022-06-05 Published:2022-08-08

Abstract: For study the electromechanical coupling dynamic characteristics of dual path propelled lifting mechanism of bridge crane, the structural characteristics and loading characteristics are considered, a vertical plane-torsion dynamic model with the electromechanical coupling is established, and the interaction mechanism between the motor and its speed control system and the mechanical system is analyzed. A test platform for dynamic parameters of a dual path propelled lifting mechanism under service conditions is built, and the dynamic test is carried out. The research shows that in the normal operation process of start-up, speed regulation, braking and load change, as well as the special conditions of motor pulling, motor power on out-sync and brake closing out-sync, there are obvious overshooting and vibration in the electromagnetic torque output of the motor, which causes dynamic loads to the transmission cylinder, such as the reducer and drum, and load. The test results show that there is dragging phenomenon in the dual path propelled lifting mechanism, which is used in test, and the torque value and vibration law of the test points consistented with the simulation results, which means that the validity of the dual path propelled lifting mechanism model and results is verified.

Key words: dual path propel, lifting mechanism, electromechanical coupling, dynamics, testing

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