Hanging type multi-tower multi-span cable crane with C-shaped overhead travelling cranes and overhead travelling crane spanning method thereof

Abstract

The invention discloses a hanging type multi-tower multi-span cable crane with C-shaped overhead travelling cranes, which comprises two overhead travelling cranes, two bearing cables, and a pluralityof cable bent towers arranged at intervals, each cable bent tower comprises a cable bent tower crossbeam, two vertical towers, and two bearing cable pulley shaft assemblies, the two vertical towers are separately arranged along an extending direction perpendicular to the bearing cables, the cable bent tower crossbeam is connected between the tops of the two vertical towers, and the two bearing cable pulley shaft assemblies are symmetrically arranged on both sides of the cable bent tower crossbeam; the two bearing cables correspondingly reeve the two bearing cable pulley shaft assemblies of theplurality of cable bent towers, and a hosing span is formed between each two adjacent cable bent towers. During operation, the two overhead travelling cranes are correspondingly supported by the twobearing cables in one hoisting span, the overhead travelling cranes can move back and forth along the extending direction of the corresponding bearing cables, and the overhead travelling cranes can belifted to be separated from the corresponding bearing cables, then pulled to get across the cable bent towers and then lowered to arrive at the corresponding bearing cables in the next hoisting span.Thereby the function of multi-span hoisting is realized by adopting a single set of overhead travelling crane system.

Description

technical field [0001] The invention relates to the field of bridge construction engineering, in particular to a bottom-mounted multi-tower spanning cable crane with a C-shaped crane and a method for the crane to span the towers. Background technique [0002] At present, cable cranes with double cable towers and single-span hoisting are used in bridge engineering. When the bridge span is large or multi-span bridge engineering installation is carried out, the cable crane is used to cover the entire bridge engineering hoisting area, and at the same time meet the requirements of the cable crane. The minimum sag and the installation height requirements of the components, under the condition that the construction height is not limited, according to the design and construction requirements, the height of the cable tower of the cable crane is often higher. [0003] The invention patent "A Multi-Tower and Span Cable Crane" (Patent No. CN201610854005.X) is a multi-tower and span cabl...

AI Technical Summary

Problems solved by technology

If traditional cable saddles and cranes are used, such as the cable saddle provided by the patent "Steering Cable Saddle for Large Tonnage Cable Crane" (Patent No. ZL201310238112. 6) For the crane provided, the wheel of the sports car is interfered by the lifting components below it, and cannot be separated from the load-bearing cable, and cannot pass through the middle tower from the existing cable saddle structure. The crane saddle is improved and upgraded, and the function of the cable crane crane spanning the tower is realized in the multi-tower spanning cable crane, so that a single set of lifting equipment can be used to complete the hoisting and hoisting of different lifting spans

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