Lifting Beam for Handling Industrial Cabinet Wind Turbine installation Site
When lifting industrial cabins (such as converter cabins and transformer cabins, each weighing 20-50 tons) at the wind turbine installation site, simple lifting beams need to strike a balance between "low cost, easy operation, and high safety"When lifting industrial cabins (such as converter cabins, transformer cabins, etc., which usually weigh 20-100 tons each) at the wind turbine (wind power) installation site, the lifting beam must meet core requirements such as high load, wind load resistance, modularization, and intelligent monitoring.
Simplified Structural Design
Integrated Box/I-Beam
Cross-section: Box (800×400×20mm) or I-Beam (1000×300×16mm). Length is customized based on cabin width (e.g., 4-meter cabin width, 5-meter beam length).
Lifting Lugs: Plate-type lifting lugs (thickness ≥50mm, material 35CrMo) are welded to each end of the beam. The hole diameter matches the crane hook (e.g., φ80mm for a 50-ton hook).
Multiple Lifting Points and Adjustment Devices
Lifting Point Layout: 4-6 D-shaped lifting rings are welded to the underside of the beam (spaced 50-100cm apart). These rings are connected to chains via turnbuckles, allowing for fine-tuning of the length (adjustment range ±10cm).
Anti-sway Design: Control cables (diameter ≥20mm) are attached to each end of the beam. Manual traction is used to suppress sway during lifting (swing amplitude ≤±15cm). Protection and Fitting Details
Anti-Scratch and Anti-Slip
A 20mm thick rubber pad (Shore A 60-70 hardness) or felt cloth is applied where the chain contacts the hull (to prevent scratches on the fiberglass/stainless steel hull).
A 5mm thick UHMWPE sheet (friction coefficient ≤ 0.15) is attached to the bottom of the lifting beam to reduce hard contact with the hull.
Anti-Corrosion and Lightweighting
The lifting beam is sprayed with an epoxy zinc-rich primer and acrylic topcoat (total thickness ≥ 100μm), with a salt spray resistance test of ≥ 2000 hours (suitable for onshore wind turbines).
Aluminum alloy (6061-T6) is used in non-load-bearing areas instead of steel, reducing weight by 15%-20% (such as the lifting eye reinforcement plate).