The drive shaft is a type of loader working device and is a device that can advance the smoothness of the loader so that the drive wheels can rotate at different angular velocities.

Working conditions

The drive shaft is subjected to alternating stresses such as torsion, torsion, shearing, tension, impact, etc., and can also cause torsion and bending vibration of the drive shaft, generating additional stress; uneven stress distribution; sliding friction between the drive journal and the bearing.

Performance requirements

The failure modes of the drive shaft are mainly fatigue fracture and severe wear of the journal. Therefore, the material should have high strength, certain impact toughness, sufficient bending, torsional fatigue strength and rigidity, and the journal surface has high hardness and wear resistance.

Drive shaft material

Forged steel drive shaft: high quality medium carbon steel and medium carbon alloy steel, such as 40, 45, 35Mn2, 40Cr, 45Cr, 35CrMo steel.

Material selection

This type of material is a medium carbon alloy steel that uses a quenched (or normalized) heat treatment to improve and improve processability. In recent years, a new steel grade, namely alloy quenched and tempered steel, has been widely used in high-power engines, that is, by adding alloying elements such as Si, Cu, Ti, etc. to refine the grains, strengthen the matrix of the steel, and improve the strength of the steel.