Dynamic optimization design method of quay crane

Abstract

The invention discloses a dynamic optimization design method of a quay crane. The method includes the steps that a simple model of the quay crane is established, and the stress, the rigidity and the dynamic characteristics of the structure of the quay crane are preliminarily analyzed and adjusted; the simple model of the quay crane is dynamically loaded, and the design variables influencing the dynamic characteristics of the quay crane are optimized and modified through a genetic method or an inexact search method based on a gradient method so that the waggle of the structure of the quay crane in the running direction of a trolley can be reduced. According to the dynamic optimization design method of the quay crane, the inexact search method based on the gradient method and the genetic method are comprehensively applied, and the advantages of the two methods are played; the descent speed of the inexact search method based on the gradient method is high, and thus the inexact search method based on the gradient method is often used for a relative small amount of optimization and analysis of the design variables; the genetic method does not have specific requirements for the optimization model and is not prone to being caught in a local optimal solution, and thus the genetic method is often used for optimization and analysis of large structures; the convectional dynamic optimization requirements of the quay crane can be taken into consideration through combination of the inexact search method based on the gradient method and the genetic method.

Description

technical field [0001] The invention relates to the technical field of dynamic theory and method research, in particular to a dynamic optimization design method for a quay crane. Background technique [0002] With the expansion of the logistics scale and the large-scale container transport ships (which have reached 18,000 containers), for international terminals, the residence time of international liners is limited, and the challenge brought by the large-scale ship type is that the loading and unloading efficiency needs to be increased by 5 to 6 times . Although our manufacturer has made great efforts, such as changes in the operation methods such as double spreaders, double trolleys, and triple spreaders, the machinery itself has not changed much, and the further improvement of loading and unloading efficiency has encountered a bottleneck. The reason is that the loading and unloading quay cranes are arranged one-dimensionally on the wharf, and the shoreline is of limited ...

AI Technical Summary

Problems solved by technology

The forward reach and lifting height are increased, and the speed of lifting and running is accelerated, which leads to the exposure of the dynamic performance of the whole machine. The amplitude of the machine operation is increased, which brings more difficulties to the box, and the actual efficiency is not ideal.

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