Intermediate shafts are a vital part of gearboxes used in mining machinery, such as conveyor drives, crushers, and hoists. They transfer torque between input and output shafts, often under high loads and variable conditions. Designing these shafts requires careful calculation to ensure they resist bending, torsion, and fatigue stresses.
In mining machinery, shafts transmit enormous amounts of torque from conveyor drives to crusher rotors. But when torque varies dynamically, shafts are exposed to torsional vibrations, which can be just as dangerous as bending oscillations. If these vibrations align with the shaft’s critical angular speed, catastrophic failures may occur.
In rotating machinery from mining conveyors to crushers and ventilation fans shafts must operate well below their critical speed to…