Four Girder Ladle Crane, Ultra-Heavy Duty Overhead Crane for Steel Mill

PRODUCT OVERVIEW

Proven Performance

A 280t model has operated safely for 14 years with zero failures (customer verified).
450t Foundry Crane (one of China’s largest) features:

Four-girder design for maximum safety.
Full PLC control with smart-upgrade compatibility.
Real-time safety monitoring and lifetime data logging.

Quality Assurance

High-Strength Steel: Rigorously tested materials.
FEA-Optimized Structure: Even stress distribution for long-term durability.
Precision Controls: PLC + variable frequency drives for smooth operation.
Multiple Safeguards: Overload protection, limit switches, and emergency brakes.

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Four Girder Ladle Crane – Key Benefits & Features

1. Heavy-Duty & Reliable Design

Four-Girder & Four-Rail Structure: Provides maximum load capacity and stability for molten metal handling.
Dual Crab System (Main + Auxiliary): Main crab lifts ladles; auxiliary crab assists in pouring.
Four-Corner Drive: Ensures smooth trolley movement and reduces wheel slippage.

2. Heat & Stress Resistance

Thermal Baffle & Insulation: Shields the girder from extreme heat.
Rock Wool Insulation & Air Cooling: Keeps electrical panels cool for longer lifespan.
Two-Stage Welding: First welding sets dimensions; second welding relieves stress for durability.

3. Precision & Safety for Molten Metal

Electronic Scale & Real-Time Monitoring: Displays weight in cabin and bridge for accuracy.
Dual-Wire Rope Safety: Backup ropes prevent accidents if one fails.
Multiple Brakes: 4 main lift brakes + 2 per lifting point + overspeed protection.
Anti-Collision & Limit Switches: Wireless sensors and dual travel limits for safety.

4. Customizable for Harsh Environments

Adjustable Speeds: Lifting and travel speeds can be modified as needed.
Wide Temperature Range: Operates from -10°C to +60°C (ideal for steel plants).
Power Options: Standard 380V, 50Hz or custom voltage/frequency.

5. Advanced Safety & Electrical Protections

Overload Protection: Blocks lifting (only allows lowering if overloaded).
Anti-Falling Mechanism: Locks motor to prevent drops.
Safety Hook Latch: Prevents load slippage.
Other Protections:

Overcurrent, short-circuit, and phase-sequence safety.
IP54/IP55 dust/water resistance.
Emergency stop and zero-position protection.

6. Built for Extreme Industrial Use

High Capacity (125/32T+): Handles ultra-heavy ladles with stability.
A7 Work Class: Designed for continuous foundry operations.
Precise Pouring Control: Dual-crab system ensures accurate steel pouring.

Why Choose This Crane?

✔ Stability: Four girders + dual lifting points minimize sway.
✔ Safety: Redundant brakes, ropes, and anti-fall systems.
✔ Heat Resistance: Engineered for long-term high-heat exposure.
✔ Smart Monitoring: Real-time weight tracking.
✔ Customizable: Adapts to tough conditions.

APPLICATION SCENARIO

Real-World Examples

320T Four-Girder Foundry Crane

Strong Frame: Four girders and four rails spread weight evenly.
20-Wheel Design: Makes wheel pressure equal, saving building costs.
Backup Controls: If one lift system fails, another takes over safely.
Durable Wheels: Forged 45° split wheels last longer and resist dust.

360T Double-Girder Crane

Compact Design: Two girders with hinged end beams save space.
Tough Parts: Hard-gear reducers, rolled pulleys, and forged shafts.
Smart Engineering: Equal-strength parts last longer and are easy to fix.

240/75T Four-Girder Crane

Big Reach: 19m span, 24m lift height.
Smooth Lifting: Twin slow-speed reducers for steady, safe operation.

Where Four Girder Ladle Cranes Are Used

Four Girder Ladle Cranes are built for tough jobs. They handle hot, heavy, and dangerous materials in factories. Here are the main places they work:

1. Steel Mills & Metal Plants

Moving Molten Metal: Carries ladles of hot steel between furnaces and casting areas.
Continuous Casting Lines: Pours steel into machines that make slabs, blooms, or billets.
Furnace Work: Helps charge electric arc furnaces (EAF) and remove slag.