Self-balancing windproof stay rope device of heavy crane in port

Abstract

The invention relates to a self-balancing windproof stay rope device of a heavy crane in a port, mainly comprising a winding drum (8) and two sets of stay ropes with the same structures, wherein each set of the stay rope is composed of a spiral buckle (4), a steel wire rope (7) and a fixing pin shaft; the spiral buckle is located between a crane windproof stay rope ear plate (1) and the steel wire rope; the upper end of the spiral buckle is fixed with the crane windproof stay rope ear plate via an ear plate fixing pin shaft (2); the lower end of the spiral buckle is connected with the upper part of the steel wire rope via the fixing pin shaft of the steel wire rope; the lower parts of the two sets of stay rope steel wire ropes are wound on the winding drum (8) in reversed directions; the winding tail end of the steel wire rope is fixed on the winding drum by a steel wire rope pressing plate (12); the winding drum is fixed and supported by two winding drum supporting seats; and each supporting seat is fixed with a wharf embedded part (10) via bolts. When typhoon or hurricane comes, the device provided by the invention can notably improve the windproof ability and the windproof safety of the heavy crane in port; furthermore, the device is convenient in use and is capable of prolonging the service life of the stay rope.

Description

technical field [0001] The invention relates to a windproof device for a large port crane, in particular to a self-balancing windproof cable device for a large port crane. Background technique [0002] In order to adapt to the large-scale development trend of freight ships and improve their loading and unloading efficiency, port cranes are also constantly developing in the direction of large-scale, and the large-scale cranes also increase their center of gravity, increase the windward area, and the possibility of suffering from wind disasters. Increase. In recent years, typhoons or hurricanes have caused frequent wind disaster accidents on large cranes in ports. Once an accident occurs, it will not only directly affect the production order of the terminal, but also cause major economic losses to related enterprises, and even cause casualties. [0003] At present, the anti-typhoon and anti-hurricane devices of large port cranes mainly include rail clamps, anchors (hooks), wh...

AI Technical Summary

Problems solved by technology

However, due to the installation deviation and the large vibration or even deflection of the crane in the typhoon, the force of the two cables on the same corner is often unequal

In this way, the heavy cable may be damaged or broken due to overload, so that the load is completely transferred to another cable on the same gantry corner, and the other cable is also broken due to overload, eventually causing the crane gantry to collapse. Both cables on one corner broke and failed, causing a major accident

In 2003, Busan Port in South Korea was hit by typhoon "Cicada", which caused a major accident involving the collapse of five adjacent cranes. The cables were overstressed and failed one after another, causing the crane to lose its restraint and move, colliding with other adjacent cranes, resulting in a major accident in which all five cranes collapsed and were scrapped.

For the case where there are two or more cables on one corner of the crane, it is necessary to ensure that the force on each cable is balanced, and there are few related studies on this issue

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