Traction-type tool derrick rig for replacing derricks of steel tube truss-concrete arch bridge

Abstract

The invention discloses a traction-type tool derrick rig for replacing derricks of a steel tube truss-concrete arch bridge. The traction-type tool derrick rig comprises fixed end anchorage devices, tensioning end anchorage devices, upper conversion beams, temporary derricks, a sling device, and a traction-type arch crown anchorage and anti-slide system composed of hanging belts, anchorage beams, traction ropes, traction jacks, slide shoes, slide plates, travelling mechanisms, levelling mechanisms, cross beams and adjustable screws, wherein one end of each of one hanging belt and one traction rope is anchored at the two sides of the corresponding anchorage beam, the other end of each traction rope is connected with the corresponding traction jack through the corresponding travelling mechanism, the other end of each hanging belt is fixed on a web member, the slide shoes are installed at the bottom of each travelling mechanism, and connected with the travelling mechanism through arc-shaped hinged supports; and one levelling mechanism is located above each travelling mechanism, each adjustable screw penetrates through the corresponding levelling mechanism and the corresponding travelling mechanism, and each adjustable screw, the corresponding levelling mechanism and the corresponding travelling mechanism are connected through pin shafts. According to the device, during a rope force conversion process for derrick replacement, the stress system of the original structure is not changed, the influence on a stress of the original structure is low, the labour working intensity is low, standardized construction is facilitated, the working efficiency is high, and the construction cost is low.

Description

technical field [0001] The invention relates to a bridge construction machine tool, in particular to a tool suspender device for replacing the suspender of a steel tube truss concrete arch bridge. Background technique [0002] At present, most of the steel tube truss concrete arch bridge suspender replacement cable force conversion devices are mainly temporary suspenders or temporary hoisting devices, and the upper part of the arch needs to be fixed by welding to level the wedge or anti-slip stoppers to achieve the leveling of the arch and facilitate installation. Beam or anti-slip purposes. When the temporary boom or the temporary hoisting device needs to be transferred to the next boom replacement place, the arched beam needs to be hoisted by large-scale lifting equipment. Disadvantages: high engineering work intensity, difficult control of on-site welding quality, easy damage to the arch ribs and coating of the original steel pipe, wedge-shaped blocks cannot be used repe...

AI Technical Summary

Problems solved by technology

Disadvantages: high engineering work intensity, difficult control of on-site welding quality, easy damage to the arch ribs and coating of the original steel pipe, wedge-shaped blocks cannot be used repeatedly, slow progress in demolition and restoration work, large-scale lifting equipment consumes a lot of shifts, and the construction cost is high

[0003] The application publication number is: CN102926332A, and the name of the invention is "tool hanger device and replacement method for steel arch bridge hanger replacement" which discloses a tool hanger device for steel arch bridge hanger replacement. Weld the limit device near the location of each suspender replacement. It is difficult to control the welding quality on site. It will damage the arch rib and coating of the original steel structure. The material of the limit device cannot be used for turnover. After the suspender is replaced, local welding on the surface of the steel structure is required. The position of the site is repaired; the number of wire ropes around the arch circle is large, the construction process is complicated, the engineering work intensity is high, the progress of demolition and restoration work is slow, the consumption of large lifting equipment is large, and the construction cost is high

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