Horizontally slidable device and application method in jack lifting and unloading construction

Abstract

The invention relates to a horizontally slidable device and an application method in jack lifting and unloading construction, belongs to the technical field of building construction, and is used for solving the problem that in construction, a jack overturns due to horizontal displacement of a lifted object. The horizontally slidable device comprises a top plate, a bottom plate, balls between the top plate and the bottom plate, a steel sleeve arranged on the lower surface of the bottom plate and a limiting device positioned at the end part of the bottom plate, wherein a gap is formed between the top plate and the bottom plate; the top plate can slide horizontally relative to the bottom plate through the balls. The application method comprises the following steps: firstly, adjusting limiting rods of the bottom plate to position the top plate in a central position and lock the horizontal freedom degree of the top plate; secondly, sleeving the top end of the jack with the steel sleeve to connect the horizontally slidable device and the jack; thirdly, putting the jack at a preset position, and adjusting the elongation of the jack to tightly press the upper surface of the top plate against the lifted object; and finally, at the beginning of the construction, unlocking the limiting rods to ensure that the top plate can slide horizontally during the construction process.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a horizontally slidable device and an application method in jack lifting and unloading construction. Background technique [0002] Jacks are widely used in the field of civil engineering construction, such as the overall jacking of steel box girders in bridge construction, and the overall falling of the jacking after jacking. During the process of jacking up or lowering the jack for oil return, the object to be lifted has a horizontal displacement, and the friction between the object to be lifted and the jack head causes the jack to generate an overturning moment. Such as figure 1 as shown, figure 1 is a schematic diagram of the overturning moment caused by the horizontal displacement of the object to be lifted 2. The overturning moment M of the jack 1 caused by the horizontal displacement of the object 2 to be lifted is inevitable, and the greater the stroke of t...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a horizontally sliding device and its application method in jack lifting and unloading construction, which is used to solve the problem of the horizontal displacement of the object being lifted during the jacking or unloading construction process of the jack, which will cause the jack to break. Overturning bending moment, causing safety hazards

Images