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本文首先介绍了电动起重机起升机构在起动和制动过程中,电动机控制方式对起升机构驱动轴动力载荷的影响。把时间继电器控制线路与频率继电器控制线路对过程的影响进行了对比,并得出了有用的结论,接着讨论了相应控制方式下,起升机构驱动轴在起升起动和下降制动时的扭振,并阐述了振动系统主要参数的影响。最后,在模拟计算机上对系统振动微分方程进行求解。本文从机构整体出发,联系电动机驱动特性和系统主要参数,通过试验,揭示起升机构在过渡过程中的动载规律,是试图从本质上了解起升机构工作过程中所发生的载荷现象以便合理设计机构而作的努力之一部分。
This paper first introduces the influence of the motor control mode on the dynamic load of the driving shaft of the hoisting mechanism during the starting and braking of the hoisting mechanism of the electric crane. The influence of the time relay control circuit and the frequency relay control circuit on the process is contrasted, and the useful conclusions are drawn. Then, under the corresponding control mode, the torsion of the drive shaft of the hoisting mechanism during the starting and the descending braking Vibration, and explained the impact of the main parameters of the vibration system. Finally, the system vibration differential equations are solved on a simulation computer. In this paper, starting from the whole body, contact with the motor drive characteristics and the main parameters of the system, the test reveals the law of dynamic load lifting mechanism in the transition process is trying to essentially understand the lifting mechanism work occurred in the load phenomenon in order to be reasonable Part of the effort to design agencies.