Elevation adjusting device suitable for support

Abstract

The invention provides an elevation adjusting device suitable for a support. The elevation adjusting device comprises an adjustable displacement base plate, a sliding groove basin, a slope wedge block, a step wedge block, a vertical limiting rod, a transverse tensioning device and a longitudinal tensioning device. The wedge block is connected with the sliding groove basin in a sliding mode, a pair of inclined faces in the adjustable displacement base plate are consistent with the inclined face inclination of the inclined face wedge block, and the step-shaped rectangular grooves of the other two inclined faces are matched with the step shape of the step wedge block. A plurality of through holes are formed in the adjustable displacement base plate, and the vertical limiting rod penetrates through the adjustable displacement base plate and the sliding groove basin so as to limit horizontal movement of the adjustable displacement base plate; when the support needs to be adjusted, lifting of the adjustable displacement base plate is achieved by controlling the position of the wedge block in the sliding groove basin, and then elevation adjustment of the support is achieved. The elevation of the support can be adjusted in the full life cycle of the bridge, so that the support is in close contact with the bridge body, the stress of the bridge body is improved, and the service life of the bridge is prolonged.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to an elevation adjustment device suitable for supports. Background technique [0002] In recent years, with the rapid increase of my country's highway, railway and bridge projects, the corresponding engineering fields have also encountered many difficult engineering problems, and the precise control of the support elevation is one of them. [0003] With the rapid development of prefabricated assembly technology, its application in the field of bridges is also increasing. Prefabricated box girders and large hollow slab girders are the main forms of bridge prefabricated assembly, but due to manufacturing errors or improper installation, it is easy to cause inconsistent elevations of the four fulcrums, resulting in the phenomenon of support voids, resulting in unfavorable stress states for the beam body. [0004] Continuous girder bridge is a common bridge. Dur...

AI Technical Summary

Problems solved by technology

If only one-way wedges are installed, under various actions, the tensioning system will inevitably be loosened and unloaded, causing the tensioning system to be stretched, thereby reducing the ability of the one-way wedge device to control the beam elevation

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