中联重科 ZTC550

The ZOOMLION ZTC550 (also known as QY55VF) is a 55-ton class heavy-duty truck crane developed by ZOOMLION, a leading global construction machinery manufacturer. It features a four-axle chassis and excellent cost-performance ratio, making it the mainstream choice for urban construction, medium-sized hoisting projects, and industrial equipment handling. 1. Core Specifications 表格 Parameter Standard Value Description Rated Lifting Capacity 55 tonnes Max. load at 3m radius, basic boom, and full counterweight Total Vehicle Weight 42,000 kg (42 tons) Consistent with the label "42000kg" on the vehicle body Main Boom Length 10.8 m (basic) – 46–48 m (full extension) 5-section U-shaped telescopic boom Auxiliary Jib Length 16 m (truss type) For high-altitude and long-distance light lifts Max. Operating Height ≈63 m Main boom + auxiliary jib combination Max. Counterweight 11.5–14 tons Modular design for easy transport Engine Weichai WP10 series (≈276 kW / 375 HP) High reliability, fuel-efficient, meets China V/VI Max. Lifting Moment 2107–2376 kN·m Leading performance in its class 2. Key Design & Technical Features (1) High-Strength Boom System 5-section U-shaped main boom: Made of high-strength steel, offering high rigidity and light weight. Single-cylinder pin-type telescoping: Fast and smooth boom extension/retraction. Truss-type auxiliary jib: Effectively increases working height and coverage. (2) Stable Chassis & Configuration Four-axle (8×4) drive chassis: Strong load-bearing capacity, good adaptability to urban roads and construction sites. Modular counterweight: The total counterweight is 11.5–14 tons, which can be disassembled for transportation. It can also be carried on board for quick transfer. (3) Safety & Control Equipped with an intelligent Load Moment Limiter (LML) to prevent overloading. Ergonomic cab with excellent visibility and comfortable operating controls. Load-sensing hydraulic system for smooth and precise operation. 3. Typical Application Scenarios Urban Construction: Steel structure hoisting of high-rise buildings, installation of bridge box girders, and lifting of municipal engineering components. Industrial Handling: Loading and unloading of medium-sized heavy equipment, such as industrial generators, transformers, and mining machinery. Emergency Rescue: Hoisting of medium-sized materials and equipment in disaster relief sites. 4. Key Advantages Summary Balanced Performance: Integrates large lifting capacity, long boom range, and good road adaptability. Cost-Effective: Suitable for both long-term project use and short-term rental, with low maintenance costs. Efficient Transport: The four-axle chassis and modular counterweight design meet highway transport standards and reduce transfer costs.