Connecting mechanism for improving tube-and-coupler scaffold

Abstract

The invention discloses a connecting device used to renovate a fastener type steel tube scaffold, comprising a joint connecting piece, a node connecting piece and a connecting rod fixed on the outer circumference of the node connecting piece, wherein both the joint connecting piece and the node connecting piece can be opened or closed along a vertical cross section; the inner hole of the node connecting piece is columnar after the node connecting piece is arranged; moreover, the diameter of the inner hole is not more than the outside diameter of a scaffold steel tube connected with the inner hole; the connecting rod is perpendicular to the node connecting piece with the extended line passing through the center line of the inner circle of the node connecting piece; after the joint connecting piece is arranged, the shape the cross section of one end of the inner hole is identical to the shape of the cross section of the connecting rod, and the size of the inner hole is not more than that of the cross section of the connecting rod; the other end of the inner hole is columnar with the diameter not more than the outside diameter of the scaffold steel tube connected with the other end of the inner hole. The connecting device improves the mechanical property of a fastener type steel tube scaffold and eliminates the phenomena of vertical member stress and additional bending moment; a diagonal member connecting device is arranged and is convenient for arranging a vertical diagonal member and a horizontal diagonal member, thereby further improving structural stability and safety.

Description

technical field [0001] The invention relates to a scaffold fixing device, in particular to a connecting device used for reforming a fastener type steel pipe scaffold. Background technique [0002] Scaffolding is one of the important facilities of civil engineering construction. There are many types of scaffolding, and the most widely used one is the fastener type steel pipe scaffolding. The fastener-type steel pipe scaffold has the advantages of simple structure, flexible use, strong adaptability to the site, and easy maintenance. The fastener-type steel pipe scaffolding uses fasteners as the connecting parts of the rods, which are divided into butt fasteners: used for the butt connection of two steel pipes; rotary fasteners: used for the connection of two steel pipes crossing at any angle; right-angle fasteners: It is used for the connection of two steel pipes crossing vertically. Due to the use of this kind of fasteners to connect and erect the space structure, there are...

AI Technical Summary

Problems solved by technology

Due to the use of this kind of fasteners to connect and erect the space structure, there are the following problems: (1), the vertical rod is eccentrically stressed, bears additional bending moments, and reduces the safety and stability of the structure; (2), due to the restrictions of the fasteners , it is difficult to arrange façade slanting bars and horizontal slanting bars at joints

Although the use of rotating fasteners can arrange inclined bars, it cannot form a space converging force system, which affects the stability and safety of the structural system

Although the long slanting rod arrangement is adopted in the project, it still cannot solve the problem fundamentally

Although the newly emerging bowl-buckle steel pipe scaffolds and wheel-buckle steel pipe scaffolds can partially solve the above problems, these two types of scaffolds must be specially processed for steel pipes, and a very large number of fastener-type steel pipe scaffolds must be transformed. and the waste is huge

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