Agricultural carriage car lubricating oil at the interrupted semi axis of the phenomenon is not rare, once the agricultural carriage car broken half shaft failure, not only affect the owner's benefit and causing the car to turn people injury accidents, therefore, should cause the attention of the machine hand.
Most of them belong to fatigue fracture. In the work of the farm transporter, the half shaft is subjected to torsion and bending moment. Under the long-term alternating stress, the surface of the shaft is easy to produce fatigue crack, and the shaft is enlarged and deepened over time. When the instantaneous load exceeds the strength limit shaft, axle fracture will appear. The half shaft fracture is related to the following factors.
1 material defects. Such as shrinkage, porosity, heat treatment process is not reasonable, these defects reduce the shaft's cross-sectional area, reduce the strength of the shaft.
2 improper design. Such as small diameter, corrosion resistant mortar pump transition shoulder fillet is too small. The former strength is not enough, the latter has a greater stress concentration at the shoulder.
3 improper processing. Such as turning and grinding of parts surface roughness, easy to cause stress concentration.
4 half shaft taper does not meet the requirements. If the half shaft taper is not in agreement with the hub taper, it will cause the wheel to be fixed on the axle and the wheel is not firm or the wheel is swung, and the half shaft is easy to break.
5 use and maintenance. Agricultural transport vehicle on uneven road surface overload at high speed, and long-term maintenance bearing oil shortage caused, lock washer failure etc., which are caused by the half shaft the working conditions worse, causing half shaft fracture failure.
http://www.skfbearing-china.com/
E-mail：[email protected]
SKF BEARINGS FAG BEARINGS INA BEARINGS TIMKEN BEARINGS NSK BEARINGS NTN BEARINGS KOYO BEARINGS NACHI BEARINGS.