Project Background
A wind turbine tower manufacturer in Haiphong, Vietnam, required a lifting solution capable of both heavy-duty lifting and flexible operation for its new coastal assembly yard. The site needed to handle 32-ton heavy tower flanges and 10-ton tooling fixtures, with a compact layout requiring coverage of core workstations within an 18m span and 1.5m effective cantilever on one side. The coastal location also demanded resistance to typhoons and salt spray.
Needs Assessment & Solution Design
Harriet, Sales Manager at Yu’an Crane, collaborated with the client to define core specifications:
- One truss-type (lattice) gantry crane with an 18m main span and 1.5m effective cantilever on one side
- Equipped with a 32-ton main electric hoist + 10-ton auxiliary electric hoist for differentiated lifting needs
- Wind resistance coefficient ≤ 0.6 and IP55 dust/water protection to withstand typhoons and salt spray
- Wide voltage tolerance for temporary coastal power supply
The technical team delivered a precision-matched solution:
- Lightweight truss main beam reduces wind resistance by 45% compared to box beams, ensuring stability under 18m span + 1.5m cantilever
- Dual independent hoist systems allow simultaneous operation: 32-ton main hoist for flanges, 10-ton auxiliary hoist for tooling
- Multi-motor variable-frequency drive and anti-tip sensors ensure stability during 1.5m cantilever operations
- Coastal-specific anti-corrosion coating and waterproof aviation connectors protect against salt spray
Custom Manufacturing & Quality Assurance
Production was executed with “parameter-locked manufacturing”:
- Truss main beams were prefabricated to exact 18m span + 1.5m cantilever dimensions, with bolted joints ensuring on-site alignment error <2mm
- Dual-hoist synchronous lifting tests verified dynamic stability under 32-ton main hoist load + 10-ton auxiliary hoist operation
- Fatigue testing of leg-beam joints simulated 12-level typhoon gusts to confirm structural integrity
- Electrical systems withstood 15% voltage fluctuation tests to ensure reliability under unstable power conditions
During production, Harriet implemented a “parameter-aligned inspection” system, sharing verification reports for key specifications (18m span, 1.5m cantilever, dual-hoist capacity) to ensure client confidence.
On-Site Installation & Commissioning
The installation team completed track laying, assembly, and commissioning in just 7 days. Additional anti-corrosion coating was applied to exposed metal components, and hoist lifting heights were calibrated to meet flange handling requirements.
Final tests confirmed stable 10-ton lifting at the 1.5m cantilever and 30% higher efficiency with dual-hoist operation compared to single-hoist systems.
Personnel Training & Client Feedback
Specialized training focused on dual-hoist coordination and cantilever operation safety.
Since delivery, flange processing efficiency has increased by 40%. The client’s Production Director commented:
“This crane was tailor-made for our coastal yard—18m span covers our workstations, 1.5m cantilever solves edge lifting challenges, and the 32-ton main hoist + 10-ton auxiliary hoist let us handle two tasks at once. It stays rock-solid in typhoons and resists salt spray perfectly—excellent value for money!”
