What Are The Requirements For Selecting Gantry Crane Power Cable System

The gantry crane cable drum should be able to automatically wind the cable, and the driving torque of the cable drum should not be less than the maximum winding torque required for winding the cable. During the unwinding process, the traction force acting on the cable conductors should be as small as possible. For cables without reinforcing cores, the maximum allowable pulling force acting on the copper conductor cross-section is 20N/mm2. For cables requiring high winding speed or cable heavy dead weight, a reinforced steel wire rope that can withstand the required traction force should be added as a core.

1. When arranging the cables of the gantry crane, ensure that the lengths of each cable are equal, the pressure plate is firmly connected, and the outer diameter of the cables of the same layer is as close as possible to avoid excessive stress on one or a few cables.

Suspension cable trolleys should be provided with traction wire ropes between each other. During operation, when the distance between two adjacent suspension cable trolleys makes the angle between the suspension cables close to 120°, the traction wire ropes should be completely straightened and stressed.

2. When the cable drum is used for power supply, the cable should be prevented from being worn during the movement. For the cable whose outer diameter is not greater than 21.5mm, the bottom diameter of the cable drum should be at least 10 times the outer diameter of the cable;

For cables with an outer diameter greater than 21.5mm, the bottom diameter of the cable drum should be at least 12.5 times the outer diameter of the cable.

3. When the gantry crane uses a hanging cable trolley (or cable guide trolley), the cable should be prevented from being worn and excessively bent during movement. For cables with an outer diameter of not more than 8mm, the curvature diameter of the cable suspension bending plate should be at least the outer diameter of the cable 6.3 times;

For cables with an outer diameter greater than 8mm, it should be at least 8 times the outer diameter;

For cables with an outer diameter greater than 12.5mm, it should be at least 10 times the outer diameter; for flat cables, the thickness of the cable is equivalent to the diameter of a round cable.