Nuclear power plant lifting trolley with guide rope winding system on double rectangular steel wire rope

Abstract

Lifting trolley for nuclear power plant with double rectangular wire rope upper guide rope winding system, including trolley frame, hoisting drive mechanism, wire rope winding system, trolley running mechanism and spreader, wire rope winding system includes drum, upper pulley block, lower pulley block, transition pulley block And the steel wire rope, one end of the steel wire rope is wound on the drum, the other end goes around the lower pulley block, the upper pulley block and the transition pulley block, and finally winds on the drum block, and the steel wire rope is guided from the upper part to form two sets of rectangular steel wire rope cross winding system. heavy car. Beneficial effects: suitable for crane trolleys of large lifting capacity nuclear power plants; reduce the drive capacity required by a single motor, reducer, etc., reduce equipment manufacturing and maintenance costs; have a wide range of applications, can be used on ring cranes and spent fuel container cranes in nuclear power plants, and can also be used On other cranes that need to achieve single fault protection for lifting dangerous loads.

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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