Multi-pylon multi-span lifting cable crane

Abstract

The invention discloses a multi-pylon multi-span lifting cable crane. The crane comprises M pylons, N lifting spans connected to the M pylons sequentially, bearing cables, an overhead crane and lifting appliance assembly, traction systems, lifting systems and anchorage systems, wherein each pylon comprises a cable tower and a main tower arranged at the top of the cable tower, and a cable saddle structure for supporting the corresponding bearing cable is arranged at the top of the main tower; two ends of single bearing cable are used for being connected with the anchorage systems located on both banks; one lifting span is formed between every two adjacent pylons, and at least two lifting spans are connected to form a multi-pylon multi-span structure; the traction systems are used for pulling the single overhead crane and lifting appliance assembly to move between the adjacent lifting spans, and the lifting systems are used for lifting materials through the overhead crane and lifting appliance assembly; N and M are both natural numbers, M is larger than or equal to 3, and N is equal to the difference between M and 1. Therefore, multiple lifting spans are formed by arranging multiple pylons, and compared with the conventional double-pylon single-span lifting cable crane, the height of each pylon is reduced substantially and controlled effectively.

Description

technical field [0001] The invention relates to the field of bridge construction engineering, in particular to a multi-tower continuous-span lifting cable crane. Background technique [0002] With the development of highway and railway construction, many bridge projects across mountains and valleys and long-span rivers have created one after another. Among them, cable cranes have played a pivotal role in the construction of arch bridges, suspension bridges and cable-stayed bridges. role. [0003] 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, accor...

AI Technical Summary

Problems solved by technology

If double-cable tower single-span hoisting cable cranes are used to hoist side-span and mid-span arch bridges, according to site conditions, hoisting area and hoisting height, the combined span layout of the cable crane is about 330m (side span) + 660m (hoisting span) ) + 330m (side span), the height of the cable tower (button tower + main tower + cable saddle structure) is about 170m, according to the relevant local regulations, the height limit of all buildings or structures is 100m, and the double cable tower cable crane is used for bridge engineering Construction does not meet height restriction requirements

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