A Hydraulic Expander for Large Displacement Expansion Joint Gap

Abstract

The invention discloses a hydraulic expander for gaps of large-displacement expansion joints. The hydraulic expander comprises a hinge shaft and hinge sleeves. The hinge sleeves are arranged at two ends of the hinge shaft; a movable bottom plate is radially arranged on one side of the middle of the hinge shaft; the hinge sleeves at the two ends of the hinge shaft are provided with an integral fixed bottom plate which is radially arranged on the other side of the hinge shaft. The hydraulic expander has the advantages that a hydraulic jack can be arranged between hydraulic press barriers of the fixed bottom plate and the movable bottom plate when the hydraulic expander is used, fixed rib plates and a movable rib plate are arranged in the expansion joints, the movable bottom plate and the fixed bottom plate can be jacked and staggered by the aid of the hydraulic jack, the fixed rib plates and the movable rib plate can be simultaneously staggered under the effects of the fixed bottom plate and the movable bottom plate, the gaps of the expansion joints can be jacked and expanded, accordingly, the gaps of the large-displacement expansion joints larger than D160 can be adjusted by means of single-person operation, the hydraulic expander is reasonable in structure, convenient to use and high in service safety coefficient, and good adjustment effects can be realized.

Description

technical field [0001] The invention relates to an auxiliary device for expansion joints of roads and bridges, in particular to a hydraulic expander for large-displacement expansion joint gaps. Background technique [0002] At present, when making road and bridge expansion joints on the market, it is necessary to adjust the gap width of expansion joints. Traditionally, workers use crowbars to adjust expansion joints, and two people must use crowbars to pry face to face. Just in case the crowbar slips during the adjustment process, it is easy to hurt yourself or others, and there is a great safety hazard; and the adjustment efficiency is very low, and there is no device that can easily adjust the gap between the expansion joints. Contents of the invention [0003] The purpose of the present invention is to address the deficiencies in the prior art and provide a hydraulic expander for large displacement expansion joint gaps that is easy to use and reasonable in structure. It...

AI Technical Summary

Problems solved by technology

[0002] At present, when making road and bridge expansion joints on the market, it is necessary to adjust the gap width of expansion joints. Traditionally, workers use crowbars to adjust expansion joints, and two people must use crowbars to pry face to face. If the crowbar slips during the adjustment process, it is easy to hurt yourself or others, and there is a great safety hazard; and the adjustment efficiency is very low, and there is no device that can easily adjust the gap between expansion joints

Images