Specifications for Cuplock Scaffolding Erection in Industrial Projects

The cuplock scaffolding system consists of vertical standards, horizontal ledgers, and cuplock joints. Its basic structure and erection requirements are similar to coupler scaffolding, with the primary difference being the cuplock joint mechanism. The cuplock joint assembly comprises an upper cup, lower cup, ledger end connector, and upper cup locking pin. The lower cup and locking pin are welded to the standard, while the upper cup is inserted into the standard. Ledgers and diagonal braces are equipped with welded spigots. During assembly, the ledger/diagonal spigots are inserted into the lower cup, then the upper cup is pressed down and rotated to secure it via the locking pin.

Cuplock Joint Erection Requirements
（1）The joint serves as the connection between standards, ledgers and diagonal braces, and must be properly locked. During erection:First position the upper cup on the locking pin，Insert ledger/diagonal brace spigots into the lower cup, ensuring the spigot's curved surface contacts the standard，After all spigots are inserted, lower the upper cup and strike its lug clockwise with a hammer until the locking pin fully engages the upper cup's spiral surface
（2）If the upper cup fails to lock or the pin cannot engage properly:Verify standard-to-ledger perpendicularity，Check horizontal alignment of adjacent cups (ledger levelness)，Inspect lower cup-to-standard coaxiality，Confirm lower cup surface perpendicularity to standard axis，Examine spigot deformation，Verify spigot curve axis perpendicularity to ledger axis，Check for debris (e.g., mortar) in lower cup，Adjust and relock if misassembled; replace defective components

Cuplock Scaffolding Erection Specifications
Standard transverse spacing: 1.2m，Longitudinal spacing (load-dependent): 1.2m, 1.5m, 1.8m or 2.4m，Lift height: 1.8m or 2.4m，Standard installation: Stagger joints with base layer alternating 1.8m and 3.0m lengths; upper layers use 3.0m lengths; top layer adjusts with 1.8m/3.0m for leveling，Vertical tolerance: ≤1/200 for scaffolds <30m; 1/400-1/600 for ≥30m; total deviation ≤100mm，Design requirements: Standard erection for height ≤20m; special construction design plan with structural analysis required for >20m or formwork supports under ultra-high/heavy/large-span conditions，Cuplock joint configuration: Upper/lower cups, standards, ledger spigots and locking pins spaced at 0.6m modular intervals

Safety Requirements for Dismantling
（1）Prepare dismantling plan; conduct full scaffold inspection; clear all obstructions; establish work zone; restrict unauthorized access
（2）Dismantle top-down sequentially; simultaneous multi-layer removal prohibited
（3）Remove tie-ins progressively with each layer; never remove tie-ins before scaffold members
（4）Lower components via lifting equipment or manual transfer; throwing prohibited
（5）Sort and stack dismantled components properly for transport/storage

cuplock-scaffolding-system.jpg
Post time: 2025-07-23 15:52:32
  • Previous:
  • Next: