Temporary protection device for prefabricated stair

Abstract

The invention discloses a temporary protection device for a prefabricated stair. The temporary protection device comprises a vertical column fixing device, a vertical column and a rail fixed to the vertical column; the vertical column fixing device comprises a T-shaped pre-buried part pre-buried in the prefabricated stair, and a shaped transfer steel plate connected with the T-shaped pre-buried part; the T-shaped pre-buried part is composed of an anti-pull reinforcing cross rod and a bolt sleeve vertically welded to the anti-pull reinforcing cross rod; the four corners of the shaped transfer steel plate are provided with long-strip-shaped bolt holes, and a counterbored hole is formed in the center of the shaped transfer steel plate; and a fastening bolt penetrates into the counterbored hole and then is in threaded connection with the bolt sleeve on the T-shaped pre-buried part to be fixed. The protection requirement can be met, a finished prefabricated stair product can further be prevented from being damaged, and material waste is reduced; and meanwhile all the parts are connected in a bolted mode, mounting and dismounting are convenient, connecting is reliable, and reutilization can be achieved.

Description

technical field [0001] The invention relates to a temporary protective device for prefabricated stairs, belonging to the technical field of building construction safety protection. Background technique [0002] In the current building construction, the permanent railings of the stairs are generally carried out in the decoration. Therefore, in the civil construction, in order to meet the requirements of safe construction regulations, temporary protective railings should be installed on the sides of the stairs; with the rapid development of prefabricated buildings, prefabricated staircase components Because of its advantages such as beautiful and clean, convenient installation, and ready-made finished products, more and more appear in construction. Prefabricated staircase components are ready-made and do not need to be decorated, so the protection of the finished products is particularly important. However, the way of traditional cast-in-place staircases drilling holes on the ...

AI Technical Summary

Problems solved by technology

Prefabricated staircase components are ready-made and do not need to be decorated, so the protection of the finished products is particularly important. However, the way of traditional cast-in-place staircases drilling holes on the treads and rest platforms and inserting expansion bolts to fix the protective railing columns is obviously not in line with the protection of prefabricated staircases. Requirements, and it is very inconvenient to remove the expansion bolts driven in later

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