In the field of high-rise exterior wall construction, suspended platforms, with their flexibility and efficiency, are gradually replacing traditional scaffolding, becoming a key piece of equipment for operations such as paint application, insulation installation, and curtain wall installation. Their modular design ensures safe and controllable high-altitude operations, making them an indispensable auxiliary device in modern building construction.
Structurally, suspended platforms for exterior wall construction primarily consist of four core systems. The first is the suspension mechanism, typically consisting of a steel frame and counterweights. Installed on the building roof or superstructure, it must meet a load-bearing requirement of "twice the rated load" and serve as the platform's "stable foundation." Installation must avoid weak roof areas, and the counterweights must be bolted in place to prevent displacement. The second is the suspended platform, typically a rectangular frame constructed of aluminum alloy or steel, typically ranging from 2 to 6 meters in length. Its rated load capacity is typically 630 kg or 800 kg (including two operators and materials). The platform is equipped with 1.2-meter-high guardrails on both sides and a non-slip floorboard to ensure worker safety. The third component is the hoisting system, which consists of a motor, wire rope, and winch mechanism. The motor provides power, and the wire rope pulls the platform up and down, with a controlled lifting speed of 8-12 meters per minute to prevent sudden stops or sudden rises and falls that could cause shaking. Finally, the safety devices serve as the platform's "protective barrier." These include a fall prevention lock (automatically locked if tilt exceeds 5° or the wire rope breaks), an upper limit switch (prevents the platform from hitting the top), and a leakage protector (rated leakage current ≤ 30mA). The safety lock requires mandatory annual calibration.
The operating principle follows the "vertical transmission + safety redundancy" principle. After the suspension mechanism is secured, the hoisting motor is connected to the platform via a wire rope. The operator controls the platform's lifting and lowering via a control panel inside the platform, and the motor provides real-time feedback on speed and load. Furthermore, the safety lock and independent safety rope provide dual protection. Even if the hoisting system fails, the safety lock instantly locks the safety rope, preventing the platform from falling and ensuring personnel safety.
In terms of application scenarios, the exterior wall construction suspended platform is adaptable to a variety of operational needs. During exterior wall paint application, the platform can flexibly adjust its height to assist operators in leveling and painting the walls. During insulation application, the platform can carry insulation boards and adhesive, reducing vertical material transportation costs. During curtain wall installation, the suspended platform can be precisely positioned at the designated floor, facilitating the installation of glass curtain walls and metal components. Even after the building is completed, it can be used for exterior wall cleaning and maintenance, achieving a "one-machine-multiple-purposes" approach.
Operators must hold a Special Operations Operator's Certificate and must inspect the wear of the wire rope, the sensitivity of the safety lock, and the grounding status of the electrical system before operation. Overloading and unbalanced loading are strictly prohibited during operation, and the platform must be immediately shut down in the event of wind speeds ≥ Level 5 or heavy rain or lightning. After the operation, the platform must be lowered to the ground, the power disconnected, and cleaned and maintained. The hoist and wire rope must be lubricated and maintained regularly.
Today, suspended platforms for exterior wall construction have become a standard feature of high-rise building construction. Their modular design reduces operational complexity, and their comprehensive safety system ensures safe construction. While improving construction efficiency, they are also promoting the standardization of aerial work techniques in the construction industry.
