What are the use cases and necessity of modular lifting rigs?

I. Use Cases for Modular Lifting Rigs 📌
Modular lifting rigs (such as the multi-stage spreader beam systems shown in the image) are primarily used in industrial lifting scenarios involving heavy loads, large dimensions, and multiple lifting points. Typical applications include:
Lifting heavy components: Handling ultra-heavy equipment—such as large transformers, generator stators, shield tunneling machine cutterheads, and heavy machine tools—where single-piece weights can range from tens to hundreds of tons.
Handling long or irregularly shaped workpieces: Transporting items like extra-long steel beams, large-diameter pipes, box girders, and ship hull sections, which require uniform load distribution across multiple points to prevent deformation.
Lifting precision equipment: Handling aerospace components and precision instruments, which require smooth lifting and balanced load distribution to avoid impacts or stress concentrations.
Compatibility with diverse cargo specifications: In ports, shipyards, and heavy machinery plants, the ability to quickly switch between cargo of varying sizes and weights is essential; this is achieved by adjusting lifting points or swapping modular components.
Lifting under special conditions: Operations such as precise alignment in confined spaces or handling specialized materials in high-temperature or corrosive environments, utilizing modules like heat-resistant chains or corrosion-resistant lifting points.

II. The Necessity of Modular Lifting Rigs ✅
Ensuring lifting safety
The multi-stage spreader beam design distributes the crane's single-point lifting force evenly across multiple lifting points, preventing cargo from cracking, deforming, or breaking due to excessive localized stress.
Adjustable lifting point spacing allows the rig to align with the cargo's center of gravity, preventing tipping or overturning and significantly reducing the risk of lifting accidents.
Protecting cargo and equipment
Distributing the load effectively minimizes bending deformation in long workpieces, making these rigs particularly suitable for fragile precision equipment or thin-walled components.
Modular designs eliminate the need to bind cargo directly with wire ropes, thereby reducing surface scratches and abrasion while preserving the workpiece's dimensional accuracy.
Improving operational efficiency
A single lifting rig system can be rapidly adapted to various cargo specifications by swapping modules such as spreader beams, chains, or lifting claws, eliminating the need to frequently replace the entire rig.
Standardized interfaces allow for quick connection to cranes, shortening preparation time and making the system ideal for high-volume, high-frequency handling operations. Adapts to Complex Operating Conditions
Lifting points can be flexibly adjusted based on the load's center of gravity and dimensions, solving challenges associated with irregularly shaped or off-center loads.
Compatible with accessories such as balancers and swivel joints, enabling precise horizontal adjustments and 360° rotation to meet requirements for accurate positioning.
Complies with Industry Standards
Meets lifting standards set by CCS (China Classification Society), ISO, and others; utilizes a multi-point lifting design to keep loads within safe limits, making it a compliant choice for heavy-load lifting operations.