Prefabricated stair structure

Abstract

The invention relates to the field of buildings, and discloses a prefabricated stair structure which comprises beams and a stair. The stair comprises step parts and fixing parts at the two ends of thestair parts. The beams are supported at the lower ends of the fixing parts. Supporting rollers are arranged in the beams. The rotating axes of the supporting rollers extend in the length direction ofthe beams. The upper ends of the supporting rollers abut against the lower ends of the fixing parts. The lower ends of the fixing parts are provided with positioning grooves where the supporting rollers are embedded. The positioning grooves extend in the length direction of the fixing parts. Inserting pipes for inserting reinforcing steel bars are embedded in the fixing parts and the beams. Whenthe supporting rollers are embedded in the positioning grooves, the inserting pipes on the fixing parts are aligned with the inserting pipes on the beams. The stair is driven by the supporting rollersto move, and the aim of pre-fixing and installing the stair on the beams is conveniently realized.

Description

technical field [0001] The invention relates to the field of construction, in particular to a prefabricated staircase structure. Background technique [0002] Stairs are components used as vertical communication between floors in buildings. [0003] In normal stair construction, the formwork is usually set up on site, the steel bars are bound, the concrete is poured, and the concrete is continuously watered and cured for 14 days to make the concrete reach the strength standard. , the whole process takes a long time, and the noise of sewage dust is seriously bad; [0004] In recent years, the concept of prefabricated stairs has been proposed: the stairs are prefabricated in the factory with tooth plates and formwork, and installed directly after arriving at the construction site. Beams are set, steel bars are pre-embedded on the beams, and fixed pipes are pre-embedded in the prefabricated stairs. After the prefabricated stairs are hoisted, the steel bars are inserted into t...

AI Technical Summary

Problems solved by technology

[0003] In normal stair construction, the formwork is usually set up on site, the steel bars are bound, the concrete is poured, and the concrete is continuously watered and cured for 14 days to make the concrete reach the strength standard. , the whole process takes a long time, and the noise of sewage dust is seriously bad;

[0004] In recent years, the concept of prefabricated stairs has been proposed: the stairs are prefabricated in the factory with tooth plates and formwork, and installed directly after arriving at the construction site. Beams are set, steel bars are pre-embedded on the beams, and fixed pipes are pre-embedded in the prefabricated stairs. After the prefabricated stairs are hoisted, the steel bars are inserted into the fixed pipes to realize the pre-fixation of the prefabricated stairs in the building. , and then by filling the fixing pipe with concrete, the complete fixation of the prefabricated staircase is realized, but the alignment of the steel bar and the fixing pipe is difficult, which is not convenient for the installation of the prefabricated staircase, and there are deficiencies to be improved

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