Product Overview
A folding boom crane (also known as a knuckle boom crane or articulating boom crane) is a lifting device featuring a multi-section hydraulic folding arm mechanism that enables precise load handling. Its core components include hoisting mechanisms, travel mechanisms, luffing mechanisms, slewing mechanisms, and a metal structural frame. The unique folding boom design allows efficient lifting operations in confined spaces with limited height clearance, making it an ideal choice for factory workshops, tunnels, construction sites, and other complex working conditions.

Key Features
1. High Working Efficiency
Folding boom cranes utilize multiple hydraulic cylinders to drive the boom mechanism, operating like an articulated robot for rapid cycle completion and high efficiency. Sequential telescoping technology and buffer design ensure smooth, stable extension for precise positioning.
2. Compact Space Occupation
When folded for transport, the boom occupies minimal deck space, making it ideal for confined working environments such as factory warehouses. Fast folding speed-some models transition from transport to operation in just 10 minutes.
3. Flexible Obstacle Avoidance
Multi-section folding boom design enables flexible operation in height-restricted spaces, performing heavy-load precision lifting in workshops, tunnels, and other confined areas. Strong load-carrying telescoping capability with excellent fine-tuning and multi-axis coordination for comprehensive lifting power.
4. Heavy-Duty Lifting Capacity
Large-tonnage folding boom crane series cover lifting capacities from 40t to 220t with a complete product range. The SQZ3500 model, for example, offers a maximum lifting torque of 346 t·m and maximum lifting capacity of 70,000kg at a maximum working radius of 19.04m.
5. Advanced Hydraulic & Electrical Systems
Proportional control hydraulic system provides excellent fine-tuning and coordination for precise equipment positioning. Equipped with load moment limiting systems, anti-overturn control, work warning systems, night lighting, and wireless remote control for enhanced safety and operating comfort.
6. 360° Full Slewing
Supports 360° continuous slewing with strong slewing torque and effective braking for smooth, safe operation.


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