Let's learn about "climbing trellises".
Sometimes when passing by construction sites, you'll see blue mesh fencing surrounding the buildings; this is "climbing scaffolding," also known as attached lifting scaffolding. It's a new type of scaffolding system developed in recent years, offering significant advantages in high-rise buildings. For those still confused about "climbing scaffolding," this article will explain it all!
What is climbing scaffolding? Climbing scaffolding, or attached lifting scaffolding, is a new type of scaffolding system developed in recent years, primarily used in high-rise shear wall buildings. It can ascend or descend along the building's height without being limited by the building's height, offering a significant improvement in safety compared to traditional scaffolding.
Attached lifting scaffolding refers to external scaffolding erected to a certain height and attached to the engineering structure. Relying on its own lifting equipment and devices, it can ascend or descend layer by layer along with the engineering structure, equipped with anti-tipping and anti-falling devices. Attached lifting scaffolding mainly consists of the attached lifting scaffolding frame structure, attachment supports, anti-tipping devices, anti-falling devices, lifting mechanisms, and control devices.
What are the components of a climbing scaffold? Five main systems:
* **Main Frame Support System:** Composed of guide rails, uprights, struts, horizontal trusses, walkways, and safety netting connected by bolts. The scaffold spacing can be adjusted according to construction needs.
* **Lifting and Unloading System:** Includes a chain electric hoist, wall-mounted supports, wall-mounted hanging seats, upper and lower lifting point trusses, upper and lower load-bearing beams, and through-wall bolts.
* **Fall Protection System:** Consists of fall protection devices, guide rail fall protection bars, wall-mounted supports, and through-wall bolts.
* **Safety Protection System:** Composed of facade safety netting, walkways, bottom flaps, and connecting bolts.
* **Overload Alarm System:** Each chain electric hoist is equipped with a load sensor, automatically alarming when there is uneven stress on each hoist point or when overload occurs.
What is the working principle of a climbing scaffold?
Attached lifting scaffolds mainly achieve lifting by manually or electrically using a chain hoist to alternately move the movable and fixed frames of the machine. From the overall structure of the climbing scaffold, the movable and fixed frames can move up and down relative to each other.
When the climbing scaffold stops moving, both the movable and fixed frames are anchored to the wall with wall bolts for stability, and there is no relative movement between the frames. However, when the climbing scaffold needs to move up and down, one of the movable and fixed frames remains fixed to the wall, while a chain hoist is used to move the other frame up and down. In this case, relative movement occurs between the two frames. Therefore, the climbing principle of the scaffold is based on the alternating wall anchoring and mutual up-and-down movement of the movable and fixed frames, allowing the climbing scaffold to move up and down layer by layer along the pre-drilled holes in the building's exterior wall to achieve the construction objective.