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A technology of cranes and cantilevering, which is applied to the erection/assembly of bridges, bridges, buildings, etc. It can solve the problems of difficult control of end mold precision, and achieve the effects of being conducive to structural safety, short adjustment time, and easy operation
Active Publication Date: 2017-12-12
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP +1
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The 20 bridges are all double U-shaped variable cross-section continuous beam structures, and they are all located on different horizontal and vertical curves. Due to the short-line method of construction, each prefabricated segment is controlled by the fixed end formwork. Compared with the traditional Closed box structure, double "U" beam open structure end mold precision is difficult to control
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[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0022] see Figure 1-2 , the present invention provides a technical solution: a ladder-type mast-type suspension crane, including a frame structure 1, a traveling system 2, a hoist 3, a crane system 4, a rotating hook group 5, a spreader distribution system 6, Electrical system 7, hydraulic system 8, steel wire rope 9, anchoring system 10 for the first lifting section, finished rolled rebar 11 and anchoring system 12 for general lifting section, the frame structure 1 is mainly composed of upper main beam, upper beam, lower main beam, The lower crossbeam, the front slant bar, the middle slant bar, the rear slant bar and the winch platform are composed. The outriggers on both sides of the suspension crane must be placed in the two "U" beams of the d...
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Abstract
The invention provides a ladder-shaped mast type cantilever assembling crane. The ladder-shaped mast type cantilever assembling crane comprises rack structures, running systems, winches, overhead travelling crane systems, rotary lifting hook groups, sling distributing systems, an electric system, a hydraulic system, steel wire ropes, a first hoisting segment anchoring system, finish rolling deformed steel bars and a general hoisting segment anchoring system, wherein the rack structures mainly consist of upper main beams, upper crossbeams, lower main beams, lower crossbeams, front slanting poles, middle slanting poles, rear slanting poles and winch platforms; landing legs on two sides of a cantilever assembling bridge girder erection machine need to be positioned in two U-shaped beams of dual U-shaped beam structures respectively; a bridge machine rack structure needs to span a middle evacuation platform; each running system mainly consists of a front sliding shoe connecting support, a front sliding shoe, a rear sliding shoe connecting support, a rear sliding shoe, a jacking landing leg, a running oil cylinder seat and a track. Compared with the prior art, the ladder-shaped mast type cantilever assembling crane disclosed by the invention has the beneficial effects of being simple and convenient to operate, high in applicability, high in beam erection efficiency, convenient to revolve, mount and disassemble, and low in revolving cost.
Description
technical field [0001] The invention relates to a ladder-type mast type suspension crane, which belongs to the technical field of bridging machinery. Background technique [0002] The elevated section of Shanghai Rail Transit Line 17 contains 20 prefabricated segmentally assembled continuous girder bridges. The segmental girders are U-shaped and box-shaped with variable cross-sections, and the length of each segment is 2.5 to 3.5 meters. This project has a total of 20 segmental cantilevered continuous U-shaped girder bridges. The middle spans are divided into three types: 50m, 55m, and 70m. Applicability and safety have high requirements. The 20 bridges are all double U-shaped variable cross-section continuous beam structures, and they are all located on different horizontal and vertical curves. Due to the short-line method of construction, each prefabricated segment is controlled by the fixed end formwork. Compared with the traditional Closed box structure, double "U" bea...
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