Nuclear power plant hoisting trolley with double wire rope winding system

Abstract

A nuclear power station hoisting trolley with double steel wire rope winding systems in a shape of Chinese character 'pin' comprises a trolley frame, a lifting driving mechanism, a steel wire rope winding system, a trolley running mechanism and a lifting appliance. Each steel wire rope winding system comprises a winding drum, an upper pulley set, a lower pulley set, a transition pulley set and steel wire ropes; one ends of the steel wire ropes are wound on the winding drum, and the other ends of the steel wire ropes wind around the lower pulley set, the upper pulley set and the transition pulley set and finally are wound on a winding drum set; and two shapes of Chinese character 'pin' which have one horizontal stroke on one side and two horizontal strokes on the other side are formed on the lifting position area of the lower pulley set, and the nuclear power station hoisting trolley with the steel wire rope winding systems in the shape of Chinese character 'pin' is formed. The nuclear power station hoisting trolley has the beneficial effects that the system is suitable for large-lifting-weight nuclear station crane trolleys, the driving capacity needed by a single electric motor, a speed reducer and the like is reduced, the equipment manufacturing and maintenance cost is reduced, the application range is wide, and the trolley can be used for a nuclear station circle crane and a spent fuel container crane and also can be used for other cranes which are used for lifting and transporting dangerous loads and need to achieve single failure protection.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant cranes, and in particular relates to a nuclear power plant crane trolley with a hoisting mechanism having a single fault protection function. Background technique [0002] The loop cranes and other equipment in the nuclear power plant lift dangerous loads. The wire ropes of the hoisting mechanism of the hoisting trolley are cross-wound. When one wire rope breaks, the other wire ropes can reliably and safely support the dangerous load. by Figure 11 Take the spreader as an example, the cross-winding of a single-row lower pulley type spreader means that one wire rope is wound around the pulleys in areas 1 and 4 of the spreader, and another wire rope is wound around the pulleys in areas 2 and 3; or a wire rope is wound around The pulleys in areas 1 and 3 of the spreader group, and another wire rope is wound around the pulleys in areas 2 and 4, so that the pulling force of a single group o...

AI Technical Summary

Problems solved by technology

[0004] With the further improvement of the power generation capacity of nuclear power plants, the maximum dangerous load hoisted by the ring crane has reached more than 350t. The lifting trolley adopts the above-mentioned conventional single-drum double-down rope or double-drum single-down rope hoisting mechanism, which will lead to wire rope diameters, coils, etc. Excessive parameters such as cylinder diameter, pulley diameter, and reel torque will lead to excessive driving capacity required by a single motor, reducer, etc., so that the model selection of components is too large, which has the disadvantages of being uneconomical and unscientific

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