Large-tonnage steel box girder pushing device, pushing system and pushing method

Abstract

The invention relates to the technical field of bridge construction equipment and in particular relates to a large-tonnage steel box girder pushing device, a pushing system and a pushing method. The pushing device comprises jacking expansion equipment, translational expansion equipment and correction expansion equipment, wherein the jacking equipment, the translational expansion equipment and thecorrection expansion equipment are arranged on a sliding box; a sliding base used for sliding is arranged at the bottom of the sliding box; and two opposite expansion ends of the translational expansion equipment and the correction expansion equipment are respectively connected to the sliding box and the sliding base, so that the sliding base and the sliding box can move relative to each other. The three expansion devices of the steel box girder pushing device are respectively arranged in three directions of a three-dimensional coordinate system. By virtue of movements of expanding the cylinder and pushing the steel box girder, the steel box girder can be wholly accurately pushed to the designed positions, correction can be realized in the pushing process, and a slide beam is not needed. The steel box girder pushing deice is small, flexible, convenient to use and effective.

Description

technical field [0001] The invention relates to the technical field of bridge construction equipment, in particular to a large-tonnage steel box girder jacking device, a jacking system and a jacking method. Background technique [0002] The construction techniques of bridges are diverse and cover all aspects, and the installation and positioning of steel box girders are the most important links. In the construction process of steel box girders, due to the complexity of the site, such as crossing expressways, crossing city railways, crossing high-speed rails, crossing ports with navigation requirements, and arteries with safety driving requirements, etc., it is affected by this complex site and Due to the influence of working conditions, in order to ensure the safety of construction, it is necessary to assemble the steel box girder in a safe place, and then move the steel box girder to the designed target position as a whole. [0003] At present, for the construction process...

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Problems solved by technology

[0004] The object of the present invention is to provide a large-tonnage steel box girder for the problems that the steel box girder itself has leapfrogs and it is difficult to control the steel box girder to stop at the target position when the steel box girder is moved as a whole by the dragging method in the prior art. A box girder jacking device, a jacking system and a jacking method, the steel box girder jacking device is a three-dimensional control device including three telescopic devices, and the three telescopic devices are respectively arranged in three directions in a three-dimensional coordinate system, The movement of the steel box girder is promoted through the expansion and contraction of the oil cylinder, and the entire steel box girder can be pushed to the designed position accurately, and the deviation can be corrected during the pushing process, without the need for a slide beam. The steel box girder pushing device is small and flexible, Easy to use and effective

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