Multi-point Suspension Cranes: Suitable for Large-Span Industrial Workshop
The multi-point suspension crane is a specialized suspended crane designed to meet the requirements of large-span industrial workshops and warehouses, such as aircraft manufacturing plants and aircraft maintenance facilities. By distributing loads through multiple suspension points, this crane reduces the impact of crane weight on the building roof structure, allowing for lower building height and helping to significantly reduce factory construction costs.
- Lifting Capacity: 3–40 t
- Number of Suspension Points: 3, 4, 5, 6, 7, 8
- Total Span: up to 80 m
- Lifting Height: 3–30 m
- Duty Class: A3–A5
Features and Highlights
- Multiple suspension points make the crane suitable for large-span workshops, providing wide coverage while effectively reducing structural dimensions, minimizing headroom occupation, and increasing effective lifting height
- Lightweight crane structure significantly reduces load requirements on the building roof and steel framework
- Articulated connections between multiple spans effectively prevent wheel unloading and excessive load concentration on individual suspension points
- Crane wheel assemblies can be adapted to H-beam or I-beam runways, flexibly meeting different building structures and customer requirements
- Compact festoon system for trolley power supply allows smaller left and right end limits, improving overall workshop space utilization
- Equipped with three-in-one drive units and variable frequency drive (VFD) control for smooth, reliable operation, wide speed regulation range, and high positioning accuracy
- Synchronized control technology ensures coordinated operation of multiple drive units and effectively prevents rail skewing
- PLC control system enables coordinated operation of multiple cranes, expanding the working coverage area
- Travel wheels made of wear-resistant engineering plastic help prevent wear on both the wheels and crane runways
- High-strength, oil-free wire ropes and Grade T high-strength hooks enhance overall safety and reliability
- Rope guides made of high-performance polymer composite materials offer low wear, high strength, and excellent toughness
- Electronic anti-sway function improves lifting stability and operational efficiency
Multi-point Suspension Cranes VS Suspension Cranes
- Support Arrangement: Multiple suspension points arranged along the runway beam to distribute loads evenly
- Lifting Stability: Multi-point suspension ensures smoother travel; equipped with variable frequency drive (VFD) control and anti-sway systems for high positioning accuracy
- Span Capability: Large spans can be achieved by increasing the number of suspension points, with a maximum span of up to 80 m
- Applications: Large-span, high-requirement facilities such as aircraft maintenance hangars and aircraft manufacturing plants
- Support Arrangement: Two suspension points, directly suspended beneath the runway rails, with no columns required
- Lifting Stability: Suitable for general material handling requirements in standard workshops
- Span Range: Commonly used in small to medium-span buildings, with typical spans of approximately 3–22.5 m
- Applications: General material handling in machining workshops, machine assembly areas, equipment maintenance facilities, and warehouses
Multi-point Suspension Crane Cases
Multi-point Suspension Crane for Aircraft Maintenance Workshops
In aircraft maintenance workshops, multi-point suspension cranes are used for the lifting, handling, and positioning of large aircraft components such as fuselage sections, wings, tail assemblies, engines, and landing gear.
Due to the large size and complex shape of aircraft components, and the extremely high requirements for balance, synchronization, and precise positioning during lifting, this type of crane uses multiple support points to distribute the load and perform synchronized lifting/moving. This allows it to move large, irregularly shaped components smoothly, precisely, and with minimal oscillation from one workstation to another, or to lift engines, wings, and other components onto maintenance platforms.
For aircraft hangars with large spans and spacious interiors, overhead cranes can make full use of the upper space without occupying floor area, thereby improving space utilization and maintenance efficiency.
Multi-point Suspension Crane for Large-Span Rubber Manufacturing Plants
This project was implemented in a large-span rubber production workshop. The building is an existing structure with complex structural conditions, including deformation in certain steel members. In addition, the production process requires the lifting and handling of extra-long materials, placing high demands on load balance and operational stability of the lifting equipment. Under these conditions, a multi-point suspension crane solution was adopted to accommodate the large-span structure and enhance overall operational safety.
The project is equipped with two multi-point suspension cranes, each featuring a 60 m main girder and a seven-point suspension design to effectively distribute loads. Dedicated lifting devices for extra-long materials are provided to meet the specific material handling requirements of the production process.
To address unfavorable installation conditions such as deformation of the existing steel structure, a comprehensive on-site assessment was conducted prior to installation. Corrective measures were then applied to the supporting steel structures, ensuring reliable installation and stable, long-term operation of the cranes.
