Choosing a suitable mobile scaffold is the foundation for improving the efficiency of construction and dismantling. It needs to be comprehensively considered in combination with core factors such as work scenarios, component design, and safety performance. Specifically, it can be screened from the following dimensions:
1、 Prioritize modular and lightweight design of the frame
Component weight and size adaptation manual operation
The weight of a single upright pole should be controlled between 8-12 kg (length 2-3m), and the weight of a single horizontal pole should be ≤ 5kg (length 1-1.8m), ensuring that a single person can easily transport and install it, avoiding the time-consuming cooperation of multiple people due to excessive weight of the components (such as traditional heavy-duty steel upright poles that require 2 people to lift, reducing efficiency by 30%).
The scaffold board is made of lightweight materials (such as aluminum alloy or high-strength plastic, with a single weight of ≤ 15kg), and the width is uniformly 0.8-1m (suitable for common work spaces). It can be laid or removed by a single person within 10 seconds, making it more efficient than thicker heavy steel scaffold boards.
Modular units can be pre assembled
Select the composite structure of "sheet frame+cross bar" (such as portal scaffold), and the ground can be pre assembled with 2-3 floor frame units (fixed with slant support). After the whole is hoisted in place, only cross bars need to be connected, which saves 50% of the time compared with the erection one by one; Avoid selecting scattered components that require bolt connections point by point (such as traditional clip on steel pipe frames), and reduce the number of high-altitude splicing steps.
2、 Pay attention to the reliability of fast connection technology
The connection method determines the operational efficiency
Priority should be given to snap on/pin on connectors: The connection between the horizontal bar and the vertical pole adopts spring snap on (press to lock, visually visible locking state) or pin on (with automatic spring plate to prevent detachment), with a single connection time of ≤ 5 seconds, which is 6 times faster than traditional bolt fasteners (requiring 3-4 turns of tightening) and reduces tool dependence.
Avoiding overly complex locking structures: Some frames are designed with multiple locking buckles for stability, but if more than 3 steps are required (such as rotation, pressing, and locking), it will actually increase the operation time. Choosing a "one step locking" structure is more efficient.
Strong universality of accessories, reducing adaptation time
Ensure that the specifications of accessories such as crossbars, uprights, and scaffold boards are consistent (such as standardized diameter of upright interface and length of crossbars), and can be mixed across groups to avoid work stoppage due to "specific accessories missing in a certain group"; Choose auxiliary components with universal interfaces (such as adjustable bases and protective barriers) that can be installed without additional modifications.
3、 Design matching function based on homework scenarios
The adaptability of the site affects the early efficiency of construction
When the ground is uneven: choose a frame with adjustable wheel seats (with a height adjustment range of 0-300mm and dual brakes), without the need to lay separate pads. After landing, the wheels can be leveled and locked within 30 seconds, saving 20 minutes/set of foundation treatment time compared to ordinary fixed wheels.
Narrow spaces (such as indoor corridors): Choose a foldable mobile rack (width ≤ 0.8m after folding), which can be pushed into the work area as a whole and unfolded to avoid disassembly and reassembly; When the height exceeds 6m, choose a frame with built-in climbing ladder (integrated with the pole), without the need for additional up and down passages, saving time in setting up auxiliary facilities.
Matching homework height with load
Clearly define the maximum working height (such as 6m, 12m) and load (such as 2kN/m ²), and avoid selecting heavy-duty frames with "overused" (slow operation due to bulky components) or lightweight frames with "overloaded use" (requiring frequent reinforcement but time-consuming). For example, for indoor decoration, choose a lightweight aluminum alloy mobile frame (single group weight ≤ 300kg), and for outdoor maintenance, choose a type of steel frame (balancing load-bearing and mobility).
4、 Detail design that takes into account the convenience of demolition
Components are easy to disassemble and classify
There are no hidden dead corners in the connectors: to avoid dust and rust accumulation at the connection between the horizontal bar and the vertical pole (such as using exposed buckles instead of embedded ones), and to quickly separate them without cleaning during disassembly; The scaffold board and frame are equipped with a "lift and remove" lock buckle (such as a spring pin) instead of bolt fixation, which can be operated independently by a single person.
Clear identification of accessories: specifications are marked on the vertical and horizontal poles (such as "1.8m horizontal pole" and "3m vertical pole"), which can be quickly classified and stacked after removal, reducing later counting time.
Overall Mobile and Transport Adaptation
The frame design is suitable for transportation tools: a binding hole is reserved at the bottom of the upright (for easy fixing with a sling), and anti rolling protrusions are provided at both ends of the horizontal bar (not easy to tilt when stacking); The folded size is suitable for conventional freight elevators or flatbed trucks, avoiding difficulties in transportation due to excessively long/wide components after dismantling.
summarize
Efficient mobile scaffolding needs to meet the four core characteristics of "lightweight and easy to move, fast connection, adaptable to different scenarios, and convenient dismantling and transportation". When making practical choices, priority can be given to testing key operations (such as the construction time of a single set of 3-layer scaffolding, the dismantling speed of 5 connecting pieces), comparing the operational fluency of similar products, while ensuring compliance with the "Technical Code for Safety of Construction Tool Scaffolds" (JGJ202), and maximizing efficiency on the basis of safety.
