Basement outer wall post-cast strip prefabricated plate construction structure

By combining guide rails, gear racks, and self-tapping screws, the problem of loose connections between precast slabs was solved, enabling the early sealing and tight connection of the post-cast strips in the basement exterior walls, thus improving project progress and quality.

CN224431500UActive Publication Date: 2026-06-30WEIFANG CHANGDA CONSTR GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WEIFANG CHANGDA CONSTR GROUP
Filing Date
2025-05-20
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, the precast slabs of the post-cast strips of basement exterior walls lack effective clamping structures, making it difficult to adjust the gaps between adjacent precast slabs and the wall, thus affecting the sealing effect and project progress.

Method used

The system employs a guide rail, gear and rack structure, and self-tapping screws to achieve a tight connection of precast panels through top and side pressure plates. It utilizes sealing gaskets and telescopic shafts to enhance the connection tightness and automatically connects adjacent precast panels using self-tapping screws.

Benefits of technology

This method enables pre-sealing of precast slabs, improves the tightness of the connection between adjacent precast slabs and the wall, ensures a good sealing effect, and reduces construction time and workload.

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Abstract

This utility model relates to the field of construction technology for post-cast strips in basement exterior walls, and provides a construction structure for precast slabs with post-cast strips in basement exterior walls. The structure includes: a wall and a post-cast strip, with guide rails on the sidewalls of the wall; several stacked precast slabs; a top pressure plate positioned above the precast slabs, with downward-bending portions at both ends of the top pressure plate, each bending portion having a first rack; a first gear rotatably mounted within the guide rails; a movable plate slidably mounted on the sidewalls of the guide rails, each movable plate having a second rack; a second gear rotatably mounted within the guide rails; a drive shaft slidably passing through the guide rails, with a key on the drive shaft; keyways on both the first and second gears; side pressure plates within the guide rails; and rotating shafts rotatably connecting adjacent side pressure plates and the movable plate. This utility model enables early sealing of the post-cast strip, accelerating project progress, and improves the connection tightness between adjacent precast slabs and between the precast slabs and the wall, ensuring a good sealing effect.
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