Nuclear power station hoisting trolley with double rectangle steel wire rope upwards-guiding rope winding systems

Abstract

A nuclear power station hoisting trolley with double rectangle steel wire rope upwards-guiding rope winding systems 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 are finally wound on a winding drum set; the steel wire ropes are guided from the upper portion, and the nuclear power station hoisting trolley with two rectangular steel wire rope cross winding systems is formed. The nuclear power station hoisting trolley has the beneficial effects that the systems are 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, in particular to a nuclear power plant crane trolley with a single fault protection function for a hoisting mechanism. Background technique [0002] Ring cranes and other equipment in nuclear power plants lift dangerous loads. The wire ropes of the hoisting mechanism of the trolley adopt a cross-winding method. When one wire rope breaks, the remaining wire ropes can reliably and safely support the dangerous load. by Figure 11 Take the spreader in the example as an example, the cross winding of the single-row lower pulley group spreader means that one wire rope is wrapped around the pulleys in the 1 and 4 areas of the spreader, and the other steel wire is wrapped around the pulleys in the 2 and 3 areas; or a steel wire is wound The pulleys in areas 1 and 3 of the spreader group, and another steel wire rope is wound around the pulleys in areas 2 and 4, so that the tension of a s...

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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