Cantilever assembly crane and installation method for front-end cantilever of watering crane based on same
A cantilever installation and river crane technology, applied in cranes and other directions, can solve the problems of difficult control of the lateral deviation of the main beam, high construction safety risks, and high column heights, and achieve a single lifting weight. handy effect
Active Publication Date: 2019-05-10
中铁广州工程局集团桥梁工程有限公司 +1
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Problems solved by technology
The lateral deviation of the main girder is not easy to control when pushing, and there is a large thrust on the column. The column is high, easy to lose stability, and the construction safety risk is high
Method used
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[0038] refer to Figures 1 to 2 , a suspension crane, comprising a lower chord 1, an oblique tie rod 2, an upper chord 3, an oblique pressure rod 4, a vertical strut 5 and a winch 6, a lower chord 1, an oblique stay rod 2, an upper chord 3 and an oblique pressure rod 4 Connecting end to end to form a parallelogram structure, one end of the vertical strut 5 is connected to the intersection of the lower chord 1 and the oblique rod 4, the other end of the vertical strut 5 is connected to the intersection of the diagonal stay 2 and the upper chord 3, and the upper chord 3 and A fixed pulley 7 is provided at the intersection of the oblique rods 4, a sling 8 is provided on the hoist 6, the sling 8 bypasses the fixed pulley 7, the lower chord 1 is fixed on the cantilever 14 of the main beam of the lower river crane, and the fixed pulley 7 is connected from the bottom One end of the main beam cantilever 14 of the river crane stretches out beyond the main beam cantilever 14 of the cran...
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The invention discloses a cantilever assembly crane which comprises a lower chord rod, a diagonal draw bar, an upper chord rod, an oblique press rod, a vertical supporting rod and a winch, wherein thelower chord rod, the diagonal draw bar, the upper chord rod and the oblique press rod are connected by heads and tails to form a parallelogram structure; one end of the vertical supporting rod is connected with an intersection point of the lower chord rod and the oblique press rod; the other end of the vertical supporting rod is connected with an intersection point of the diagonal draw bar and the upper chord rod; and a fixed pulley is disposed at an intersection point of the upper chord rod and the diagonal draw rod. The cantilever assembly crane disclosed by the invention has the beneficialeffects that the cantilever assembly crane has a simple structure and can be moved easily and gives full play of advantages including easily assembly, small construction safety risks and a large single-time hoisting weight of the cantilever assembly crane; and problems that a lot of sections are needed, construction duration is long, the aerial operation amount is large and assembly quality is poor during installation of a large cantilever installation structure of a watering crane are solved. The invention relates to crane cantilevers in civil engineering.
Description
technical field [0001] The invention relates to the cantilever of a crane in civil engineering, in particular to a cantilevered crane and a method for installing the cantilever at the front end of the crane going down the river based on the cantilever. Background technique [0002] The river crane is a large-span and large-lift lifting structure that lifts large-segment and large-tonnage components from the shore to the riverside barge. The large cantilever of the river crane refers to the part where the front part of the main girder of the river crane extends into the river. [0003] As a common structural form across rivers, lakes and seas, bridges are widely used, and arch bridges, as bridges with large spanning capacity, good durability and low maintenance and repair costs, are more and more frequently used in various road networks. [0004] For the arch bridge constructed by segmental cable-stayed buckle racks using cable cranes, the steel pipe arch segments are usuall...
Claims
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IPC IPC(8): B66C23/18B66C23/62
Inventor 周文冯朝军张启桥朱志钢张立军孙军张应红游威郭俊雅王学栋何满银张赣况昌生
Owner 中铁广州工程局集团桥梁工程有限公司