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A hydroelectric power station gantry crane is a heavy-duty lifting equipment specifically designed for hydropower projects. It is primarily used for the installation, maintenance, and repair of hydraulic gates, hoisting turbine generators, and servicing trash racks. Its large-span gantry structure spans across dam crests or plant rail tracks, accommodating complex spatial layouts and high-load demands.
Key Features of hydroelectric power station gantry cranes
Large Span and High Load Capacity
Main girder spans range from 30–60 meters, with a maximum lifting capacity of 500 tons (e.g., specialized models for gate installation).
Utilizes box girders or truss girders to handle large hydropower components.
Precision Positioning and Anti-Sway Control
Equipped with variable frequency speed regulation systems (0.1–10 m/min stepless speed) and laser positioning systems, achieving hook positioning accuracy of ±2 mm.
Ideal for high-precision alignment in gate slots and turbine shaft bores.
Enhanced Environmental Adaptability
Corrosion protection grade C4 (ISO 12944).
Features rainproof covers and anti-icing heaters, ensuring stable operation in harsh conditions (humidity >90%, temperatures from -25°C to +45°C).
Multi-Condition Safety Protections
Integrated overload limiters, wind speed alarms (>12 m/s auto-lock), rail deviation detection, and dual braking systems, compliant with GB/T 14405 safety standards.
Typical Applications of hydroelectric power station gantry cranes
Gate Operations: Vertical/horizontal lifting and tilting installation of flat gates and radial gates (e.g., maintenance of spillway gates in large dams).
Turbine Installation: Indoor lifting and positioning of rotors for hydroelectric generator units (single-unit weight: 300–800 tons).
Emergency Response: Rapid opening/closing of emergency gates during flood seasons (e.g., emergency closure force up to 2000 kN for deep outlet gates).
Auxiliary Maintenance: Hoisting trash rack debris removal equipment and assembling penstock welding platforms.
Restrictions: Prohibited from lifting molten metals; regular inspection of track settlement required (permissible error ≤ 1/1000 of span).
