Cup-Lock Coupler

Cup-Lock Coupler is the core connecting component of bowl type scaffolding systems,which achieves rapid assembly and locking of steel pipes through a unique"bowl buckle"structure.It is widely used in construction,bridge building and other scenarios.Its design combines efficiency and stability,and compared to traditional fasteners such as right angle fasteners and rotary fasteners,it is more convenient to install and less prone to loosening,making it an important type in modern scaffolding systems.

1、Structure composition and working principle

The Cup-Lock Coupler is mainly composed of the following components,with an integrated design as a whole:

Upper bowl buckle:It is bowl shaped and fixed at the top of a vertical steel pipe,with a circular groove on the inner wall.

Bottom bowl buckle:welded and fixed to the upright pole,with a supporting surface at the bottom,used to support the joints of horizontal or diagonal bars.

Horizontal bar joint:welded at the end of the horizontal bar,in a wedge-shaped shape,with positioning pins.

Limit pin:installed on the side of the upper bowl buckle,used to lock the position of the upper bowl buckle.

working principle:

Insert the crossbar joint into the supporting surface of the lower bowl buckle,so that the positioning pin of the joint is engaged in the hole of the lower bowl buckle;

Rotate the bowl buckle to make the groove on its inner wall bite into the wedge-shaped part of the crossbar joint;

Insert the limit pin,fix the position of the bowl buckle,and complete the rigid connection between the crossbar and the upright.

Fast locking is achieved through mechanical interlocking,without the need for bolt fastening,and installation efficiency is over 30%higher than traditional fasteners.

2、Core Features

Quick assembly and disassembly:No need for tools such as wrenches,pure manual operation can complete the connection,greatly reducing the scaffolding setup time,especially suitable for projects with tight schedules.

Structural stability:The joint is designed for multi-directional force,with high connection strength between horizontal bars,diagonal bars,and upright bars,and strong overall deformation resistance,reducing safety hazards caused by looseness.

Strong universality:The length of the horizontal bar is standardized(such as 0.6m,0.9m,1.2m,etc.),and can be flexibly combined according to construction needs to adapt to frames of different spans and heights.

High safety:The joint has good self-locking performance and is not easily detached under vibration,impact and other working conditions.All components are welded and fixed without vulnerable small parts(such as bolts and nuts).

3、Materials and specifications

Materials:Q235 low-carbon steel pipes are commonly used for the upright,horizontal,and bowl buckle components.The bowl buckle castings are malleable cast iron(such as KT35-10),and the surface is treated with rust prevention(such as painting or galvanizing)to enhance corrosion resistance.

Common specifications:

The diameter of the pole is usually 48mm or 51mm,and the length is 1.2m,1.8m,2.4m,etc;

The crossbar is designed according to the span,with lengths corresponding to different moduli to ensure compatibility with the bowl buckle nodes.

4、Applicable scenarios

Construction:used for setting up external wall scaffolding,formwork support systems,indoor scaffolding,etc;

Large scale projects:high-altitude work platforms or load-bearing supports for bridges,tunnels,power plants,and other projects;

Temporary facilities:Temporary support structures for emergency rescue passages and large event stands.

5、Precautions

Check the integrity of the components:Before use,it is necessary to confirm that the bowl buckle has no cracks or deformations,the crossbar joint is not worn,and the limit pin can be inserted flexibly;

According to the specifications,the horizontal and diagonal bars must be connected to the corresponding bowl buckle nodes to avoid uneven stress caused by jumping steps during installation;

Regular maintenance:Clean the surface of oil stains and debris after use,and replace severely corroded components in a timely manner to ensure reliability during repeated use.

Bowl buckle fasteners,with their advantages of high efficiency and stability,are gradually replacing traditional fasteners in modern construction projects,especially widely used in large-scale and standardized scaffolding systems,and are key components for improving construction efficiency and safety.