Double-girder Crane

Basic Structure:
Girder: Consists of two main beams, two end beams, a walkway, guardrails, and other components. Available in box-type and truss configurations.
Traveling Mechanism: Includes the trolley and carriage mechanisms.
Hoisting Mechanism: Consists of a motor, brake, drive shaft, coupling, reducer, drum, fixed pulley assembly, and wire rope, enabling cargo lifting and lowering.
Cab: The operator's workplace, equipped with control equipment, a power distribution and protection box, signaling devices, and lighting.
Operating Principle:
Lifting System Transmission: Power is generated by the motor and transmitted to the high-speed shaft of the reducer via a gear coupling, a compensating shaft, and a brake wheel coupling. After being reduced in speed by the reducer, power is output from the low-speed shaft, transmitted to the drum assembly via the internal gear ring on the drum, and then raised and lowered via the wire rope and pulley assembly. Lift Truck Operation System Transmission: The motor generates power and transmits it to the high-speed shaft of the vertical three-stage reducer via the brake wheel coupling, compensating shaft, and half-gear coupling. After being reduced in speed by the reducer, the power is output from the low-speed shaft and connected to the trolley's drive wheel axle via the half-gear coupling, compensating shaft, and half-gear coupling, driving the trolley's drive wheel rotation.
Vehicle Operation System Transmission: The motor generates power and transmits it to the high-speed shaft of the reducer via the brake wheel coupling, compensating shaft, and half-gear coupling. After being reduced in speed by the reducer, the power is output from the low-speed shaft and connected to the vehicle's drive wheel axle via the full-gear coupling, driving the vehicle's drive wheel rotation and completing the longi