Retractable beam used for elevator shaft formwork platform

Abstract

A retractable beam used for an elevator shaft formwork platform comprises a fixing beam, an adjusting beam and automatic resetting pawls installed at one end of the adjusting beam. I steel at one end of the fixing beam is installed between two steel channels of the adjusting beam in a sleeved mode, a first lower pressing block is welded to the bottom of the adjusting beam, a first upper pressing block is locked to the top of the adjusting beam through a bolt assembly, and a second upper pressing block and a second lower pressing block are locked to the top and the bottom of the I steel of the fixing beam through bolt assemblies respectively. Each automatic resetting pawl comprises vertical plates, a balancing weight and a rolling wheel, wherein the balancing weight and the rolling wheel are installed at the two ends of the vertical plates respectively. The middle portions of the vertical plates are connected with the adjusting beam at the end of the retractable beam through pin shaft assemblies. The length of the beam can be freely adjusted within a certain range, the beam is adapted to constructing tube type cast-in-place shearing walls of different shapes and section sizes and can be lifted inside an elevator shaft and achieve stable positioning landing on each layer, in this way, efficiency of building construction is greatly improved, manpower and material resources are saved, repeated using can be achieved, and the safety coefficient is high.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a telescopic beam of a formwork platform used for the construction of an elevator shaft-like casing-type cast-in-place shear wall. Background technique [0002] In building construction, it is common to encounter tube-type cast-in-place shear walls of various shapes and cross-sectional sizes, such as tube-type cast-in-place shear walls for elevator shafts. When installing the formwork, it is necessary to lap the formwork platform inside the tube, which is more common The best method is to use steel pipes, fasteners, wooden boards, etc. for lap joints. This traditional lap joint method requires a lot of consumables, labor and time, and cast-in-place shear walls of different shapes and cross-sectional sizes require lap joints of different specifications and quantities. Parts are not only costly, but also heavy workload, and the simple platform built has...

AI Technical Summary

Problems solved by technology

[0002] In building construction, it is common to encounter tube-type cast-in-place shear walls of various shapes and cross-sectional sizes, such as tube-type cast-in-place shear walls for elevator shafts. When installing the formwork, it is necessary to lap the formwork platform inside the tube, which is more common The best method is to use steel pipes, fasteners, wooden boards, etc. for lap joints. This traditional lap joint method requires a lot of consumables, labor and time, and cast-in-place shear walls of different shapes and cross-sectional sizes require lap joints of different specifications and quantities. Parts are not only costly, but also heavy workload, and the simple platform built has great potential safety hazards

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