Sand box type jacking structure

Abstract

The invention relates to the technical field of building construction, in particular to a sand box type jacking structure. An upper sand box with the bottom being open is arranged in a lower sand boxwith the top being open. The two sides of the lower sand box are provided with movable moving sand boxes correspondingly. The interval between the two movable moving sand boxes is adjusted through rotating bolts and nuts, so that the size of the inner space of the lower sand box is changed, sand in the lower sand box pushes the upper sand box to move up and down, and then the elevation of a bottomformwork of a high formwork can be accurately adjusted; the sand box type jacking structure has the advantages of being large in contact area with the bottom formwork of the high formwork and a supporting frame of the high formwork, high in bearing capacity, easy to manufacture, accurate and convenient to use, safe, reliable, capable of being repeatedly used and good in economical efficiency; andthe sand box type jacking structure can be widely used for construction operation of large-span high-formwork supporting frame needing height adjustment at any time.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a sand box type jacking structure. Background technique [0002] In the field of building high formwork construction, various types of support frames are installed under the formwork, and the top of the support frame uses adjustable bolt-type jacks to support the height of the high formwork bottom plate. The diameter of the bolts used for these jacks is generally not greater than 48mm , the bearing capacity of the bolt-type jacking is not large; when the high-support formwork needs to cross roads, rivers, etc., the span between the high-form support frames increases, and the load acting on the support frames is also large. The formwork support frame needs to use steel columns to replace the general scaffolding support frame. The adjustable bolt type jacking is not suitable for this occasion due to its small bearing capacity; Settlement pressure test to eliminate th...

AI Technical Summary

Problems solved by technology

[0002] In the field of building high formwork construction, various types of support frames are installed under the formwork, and the top of the support frame uses adjustable bolt-type jacks to support the height of the high formwork bottom plate. The diameter of the bolts used for these jacks is generally not greater than 48mm , the bearing capacity of the bolt-type jacking is not large; when the high-support formwork needs to cross roads, rivers, etc., the span between the high-form support frames increases, and the load acting on the support frames is also large. The formwork support frame needs to use steel columns to replace the general scaffolding support frame. The adjustable bolt type jacking is not suitable for this occasion due to its small bearing capacity; Settlement pressure test to eliminate the settlement of the formwork and the deformation of the bracket gap. At this time, the height of the formwork will be reduced, and the height of the traditional steel structure support frame cannot be adjusted, resulting in the height of the high-support formwork after the pressure test. Affect the quality of subsequent concrete pouring; these are undesirable for those skilled in the art

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