Hydraulic type multifunctional suspension-assembling girder lifting machine and steel box girder assembling method
A hydraulic, multi-functional technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of large limitations, poor maneuverability and adjustment ability, small application scope, etc., to achieve broad promotion value, overcome the lifting height small effect
Active Publication Date: 2014-03-26
CHINA RAILWAYS CORPORATION +2
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Problems solved by technology
The bridge deck crane is only suitable for steel box girder floating construction, and there is no hoisting crane on the top that can move vertically and horizontally, so it has large limitations, relatively poor maneuverability and small application range
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Embodiment Construction
[0021] Referring to the accompanying drawings, the embodiment of the present invention provides a hydraulic multi-functional cantilever lifting machine and a steel box girder assembly method, which mainly consists of a main frame Z1, a lifting system Z2, a longitudinal moving system Z3, an adjustable support Z4, a hydraulic and electrical system Z5, etc.,
[0022] The main frame Z1 is mainly composed of main truss 1 , struts 2 , diagonal bars 3 , main beams 4 , connecting beams 5 and parallel components 6 . On the basis of the diamond truss structure, the main frame Z1 adds an upper triangular structure to extend the backward travel of the hoisting crane. The hoisting crane is realized to lift the beam at the rear of the cantilevered beam lifting machine, which not only improves the bearing capacity, but also increases the overall anti-overturning ability of the cantilevered beam lifting machine.
[0023] The hoisting system Z2 includes a winch 9, a hoisting crane and a pulle...
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Abstract
The invention discloses a hydraulic type multifunctional suspension-assembling girder lifting machine and a steel box girder assembling method. The hydraulic type multifunctional suspension-assembling girder lifting machine is mainly composed of a main frame, a lifting system, a longitudinally-moving system, an adjustable support, a hydraulic and electrical system and the like. A triangular structure is additionally arranged on the main frame on the basis of a rhombus truss structure, so that a backward-moving travel of a lifting crane is prolonged. A girder is lifted by the lifting crane on the rear portion of the suspension-assembling girder lifting machine and the overall anti-dumping capacity of the suspension-assembling girder lifting machine is increased. The lifting crane can move in the longitudinal direction and in the transverse direction, a special hanging tool capable of rotating by 90 degrees is arranged on the lower portion of the lifting crane in a matched mode, and forward movement, 90-degree rotation, backward movement and assembling construction of a steel box girder can be achieved. A longitudinally-moving oil cylinder is connected with a lower bar and a longitudinally-moving rail of the main frame and the whole machine moves forwards through telescopic operation of the oil cylinder. The hydraulic type multifunctional suspension-assembling girder lifting machine has the advantages of being large in bearing capacity, stable in structure, high in work efficiency, convenient to disassemble and assemble and capable of enabling a steel box girder assembling construction technology to be improved and improving project progress.
Description
technical field [0001] The invention relates to the field of bridge deck steel box girder hoisting, in particular to a cable-stayed bridge cantilevered girder lifting machine and a steel box girder assembly construction method. Background technique [0002] With the development of bridge construction and the improvement of bridge design calculation technology and construction technology, bridges are developing in the direction of complex and long-span, especially long-span cable-stayed bridges are developing rapidly and are widely used. A cable-stayed bridge is a structural system composed of towers under pressure, cables under tension and girders under bending. In order to reduce the self-weight of the bridge structure and ensure the spanning capacity of the cables Box girders and steel box girders of cross-river cable-stayed bridges are mostly assembled using the construction method of floating transport + deck crane. Domestic research and development of bridge deck crane...
Claims
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Inventor 孙小猛徐登云任世朋闫明寒胡晓东陈平李鹏黄爱民狄鹏
Owner CHINA RAILWAYS CORPORATION