Continuous transverse movement type construction method for long-span cable crane

Abstract

The invention provides a continuous transverse movement type construction method for a long-span cable crane. The continuous transverse movement type construction method comprises the following steps: 1, smearing the top surfaces of slideway beams with a lubricating substance, and perforating through holes in web plate positions of the slideway beams; 2, perforating through holes in bottom cross beam positions of cable saddles; 3, welding a jack tension pedestal at each of two ends of each slideway beam, and mounting a group of continuous jacks on each jack tension pedestal, wherein each group of continuous jacks consists of two jacks; 4, mounting a tool anchor clamping sheet at one end of a steel strand, and pushing the other end of the steel strand to penetrate through the through holes in the cable saddles and be connected to the continuous jacks; 5, after all the continuous jacks are started, starting a hydraulic pump to enable the tool anchor clamping sheets at the cable saddles to press against each other; 6, discharging by one of the two jacks, and returning oil by the other jack; 7, repeating the step 6, and performing continuous pushing until the cable saddles transversely move to appointed positions; 8, fixing the cable saddles into the through holes in the step 1 through pin shafts. The continuous transverse movement type construction method is safe, efficient, convenient to construct, simple in process and low in cost.

Description

technical field [0001] The invention belongs to the technical field of cable crane construction, and in particular relates to a continuous lateral movement construction method of a large-span cable crane. Background technique [0002] When the width of the bridge deck is large, the installation cost and risk of the long-span (548.5m) cable crane are high; at present, there are many methods for the lateral movement of the long-span cable crane in China, such as: jack-finish-rolled rebar System method, wire rope pulley block-inverted chain traction method, etc. Each construction method has its own characteristics and scope of application. [0003] Among them, the jack-finish-rolled rebar system method is to place steel rails at the bottom of the cable saddle on the top of the tower as a slideway, and use jacks on the traction system to ensure that the tower is synchronized and stable during lateral movement. The precision-rolled rebar is used as the tension cable body of the...

AI Technical Summary

Problems solved by technology

[0004] (1) Since the steel rail is installed at the bottom, the cable saddle is not easy to balance on the steel rail, so it cannot be applied to the lateral movement of the large-span cable crane;

[0005] (2) Limited by the stroke of the jack, the operation is cumbersome and requires workers to operate in real time;

[0006] (3) The problem of continuous lateral movement cannot be solved, the intermediate operation is laborious and labor-intensive, and the work efficiency is low

[0008] (1) The power is small, the number of operators is large, and the work efficiency is low. It is only suitable for the lateral movement of small-span cable cranes;

[0009] (2) The steel wire rope wears a lot and is prone to breakage, which poses a great safety hazard

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