Quick couplers (also known as quick connectors) are industrial accessories designed to enhance the efficiency of replacing work implements. They are primarily categorized into two types: mechanical and hydraulic. Their core function is to facilitate the rapid exchange of excavator attachments-such as digging buckets and hydraulic breakers-or to connect pipelines within liquid-cooling systems. This capability reduces changeover times to mere seconds while simultaneously expanding the functional versatility of the equipment.
The product consists of several key components, including a main bracket, movable locking blocks, and hydraulic cylinders. Hydraulic models achieve rapid detachment by utilizing a hydraulic cylinder to drive hook-shaped clamps that engage and lock onto the attachment's pins; mechanical models, conversely, employ pin- or screw-based locking mechanisms. Pneumatically controlled quick couplers offer 360-degree rotational adjustment capabilities. Furthermore, a dual-redundancy safety design-incorporating both hydraulic pilot-operated check valves and mechanical locking mechanisms-prevents the accidental detachment of attachments during operation.
The product's scope of application spans excavators ranging from 3 to 45 tons; additionally, it serves as a critical connecting component within liquid-cooling systems for AI servers (such as the NVIDIA GB300). China has officially released the national standards GB/T 22076-2024, *Pneumatic Cylindrical Quick Couplers*, and GB/T 40565.2-2025, *Hydraulic Fluid Power Connections-Quick-Action Couplings-Part 2: Flat-Face Type*.
