Rolling friction walkingjacking and pushing device for bridge segment installation

Abstract

The invention discloses a rolling friction walking jacking and pushing device for bridge segment installation. The rolling friction walking jacking and pushing device for the bridge segment installation comprises a groove type travelling track tray (1), a long ram jacking and pushing hydraulic jack (2), a rolling mobile platform car (3), a steel plate box (4),a steel tube cup type sliding shoe (5), a transversely rectifying hydraulic jack (6), and a lifting hydraulic jack (7), whereinthe groove type travelling track tray is combinedly welded by circumferential side plates and a bottom plate, the hydraulic jack is fixed to the end plate, in the direction orthogonal to that of the jacking and pushing, of the tray, the rolling mobile platform car is placed in the tray and connected with a pinof the jacking and pushing hydraulic jack, the steel plate box is placed and fixed on the rolling mobile platform car, the steel tube cup type sliding shoe is placed in the steel plate box and connected with a pin of the transversely rectifying hydraulic jack which is fixed to the side plate, in the direction orthogonal to that of the jacking and pushing, of the steel plate box, and the lifting hydraulic jack is placed in the steel tube cup type sliding shoe. According to the rolling friction walking jacking and pushing device for the bridge segment installation, horizontal thrust of a bridgepier or the top of a temporary buttress pier and local stress when lifting a beam body are substantially decreased during the jacking and pushing installation process of the bridge, smooth and rapidjacking and pushing can be achieved.

Description

technical field [0001] The invention relates to a rolling-friction walking shoe pushing device installed in bridge segments, which belongs to the field of civil engineering bridge construction and installation equipment. Background technique [0002] In the construction of civil engineering bridges, the installation of prefabricated concrete bridges and steel bridges for various cross-line and river-cross highways and municipal engineering needs to be installed without interrupting traffic and navigation. In recent years, jacking devices have been installed on bridge piers or temporary piers, and new bridges are fabricated in sections. Continuous pulling or exchange jacking constructions have gradually increased. The main advantage is that the traffic environment below the newly built bridges and traffic conditions are minimally affected. The main method of the known walking pushing device for the installation and construction of bridge sections is to place the hydraulic ja...

AI Technical Summary

Problems solved by technology

Although the friction is lubricated with lithium-based grease, because of the relationship between the contact surface and the relative sliding friction of the contact surface, the friction force from the static friction of the bridge segment to the dynamic friction of the beam moving is still relatively large, generally accounting for the top It is about 10% of the load of the bridge girder body. When multiple jacks work at the same time, it is more likely to generate discrete vibrations, and increase the horizontal thrust on the top of the bridge pier or temporary support pier. Frequent alternating work from static friction to dynamic friction affects the smoothness of the bridge. Push construction

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