Double-Girder Crane Trolley with Hoisting Mechanism

The trolley of a double-girder overhead crane is a critical traveling unit that moves along

the two main girders. It carries the hoisting mechanism, which performs vertical lifting and

lowering of the load.

Main Components of the Hoisting Mechanism:

• Hoist motor – Provides power for lifting operations

• Gearbox / Reducer – Reduces motor speed and increases torque

• Drum – Winds the wire rope for lifting

• Wire rope – Supports the load and transmits lifting force

• Hook block – Connects to the load via hooks or lifting attachments

• Brake system – Ensures safe stopping and load holding

• Overload limiter – Prevents overloading for safety

Key Features:

• Suitable for medium to heavy-duty applications (typical capacity: 5t – 500t)

• Stable and smooth lifting with precise speed control

• Compact trolley design for low headroom and better hook approach

• Fail-safe braking and double brake option for high safety requirements

• Optional features: auxiliary hoist, variable frequency drive (VFD), anti-sway control, remote operation

Typical Applications:

• Steel mills, foundries, heavy machinery assembly

• Warehousing, logistics centers, industrial workshops

• High-frequency or high-capacity lifting operations