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Shock and Vibration
Volume 2016 (2016), Article ID 4847250, 8 pages
Research Article

Dynamic Efficiency of a Container Crane’s Hoisting Transmission System under Hoisting Dynamic Load

College of Mechanical Engineering, Tongji University, Shanghai 200092, China

Received 8 January 2016; Revised 16 February 2016; Accepted 17 February 2016

Academic Editor: Sergio De Rosa

Copyright © 2016 Yuanyuan Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The dynamic efficiency of hoisting transmission system on a container crane is fundamental for accurate efficiency prediction, while the dynamic efficiency of hoisting transmission system has not been investigated sufficiently. This paper will focus on dynamic efficiency of hoisting transmission system under hoisting dynamic load. A power loss model of gearbox was built. Then the dynamic model of gear transmission was developed including time-varying mesh stiffness and hoisting dynamic load was studied. Power loss, dynamic efficiency, and equivalent static efficiency were conducted in hoisting and lowering working conditions. The result shows that dynamic efficiency which consists of the significant lower frequency component coincided with hoisting load torque of the higher frequency component which is directly related to dynamic mesh and bearing force. And in two processes, the equivalent static efficiency in constant speed stage is min, whereas maximum value occurs in different stage. The research results lay a foundation for hoisting gear transmission dynamic efficiency analysis.