Support with full-automatic height adjusting function

Abstract

The invention relates to the technical field of bridge engineering, and particularly discloses a full-automatic height adjusting support which comprises an upper support plate, a spherical crown lining plate, a lower support plate, a wedge-shaped plate, a base plate and an automatic pre-tightening device. The upper support plate, the spherical crown lining plate, the lower support plate, the wedge-shaped plate and the base plate are sequentially arranged from top to bottom, and the automatic pre-tightening device is in transmission connection with the outer side of the wedge-shaped plate and used for controlling the wedge-shaped plate to move in the longitudinal bridge direction. It can be guaranteed that the support has certain pressure in real time, and gaps are not generated.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a fully automatic height-adjusting support. Background technique [0002] There is a large-span steel box girder bridge type, which is truncated at the mid-span, and the truncated main girders are connected together by nesting small steel box girders in the main girder of the large steel box, that is, the middle-span non-axial connection is set in the middle. The small box girder needs to meet the functions of constraining the vertical and lateral relative deformation and relative rotation of the girder end of the main girder, so it needs to be installed on each joint surface of the large and small steel box girder. The special bearing for the non-axial connection device in the mid-span has the effect of supporting the limit, adapting to deformation and shock absorption. This bridge type requires that the large box girder, the support and the small box girder are clos...

AI Technical Summary

Problems solved by technology

This type of bridge requires the large box girder, the support and the small box girder to be in close contact at all times, that is, the support maintains a certain pressure at all times, and when the support adapts to the expansion and creep of the bridge, the internal slide plate is worn and the support has a gap. That is, there will be a gap between the large box girder, the support and the small box girder. The gap will directly reduce the overall stiffness of the bridge, seriously affecting the use of the bridge and driving safety. It is necessary to check the use status of the support at any time and adjust the support to fill the gap. , the traditional method is to manually adjust the mechanical structure at regular intervals. This method is time-consuming and laborious, and there are potential safety hazards, and it cannot guarantee that there will be no gaps at all times.

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