In the course of use, the agricultural vehicle sometimes has a broken half-axis phenomenon, and is forced to stop and replace it. In severe cases, the vehicle is turned over and injured. In response to this question, talk about the reasons for the broken half shaft and the prevention methods.

1. Requirements for design and manufacturing units. The purchased shaft materials are required to be inspected strictly in accordance with the inspection standards for purchased materials, and the waste cannot enter the factory into the production line. When designing the structure, the design department should try to avoid and reduce the stress concentration. The diameter of the design of the stepped shaft thickness should not be too different. The comprehensive corner information of the transition part should be as large as possible. The excess portion structure can be set to a stepped shaft section to mitigate the cross-sectional variation of the half shaft. In the production process, in the partial additional stress range of the half shaft, the sharp corner transition of the section should be avoided, and the surface roughness should be increased to the level of 1.6-3.2.
2. Requirements for users. The load should be balanced, and it is easy to produce a broken half shaft if it is not unilaterally loaded or overloaded. After maintaining the vehicle, check the half shaft according to the instructions in the instruction manual, and find out the timely processing to ensure the normal operation of the half shaft. When purchasing the semi-axle, it is necessary to select the regular manufacturer, because the regular manufacturers and processing equipment, processing technology, heat treatment process are more advanced, can guarantee the quality of the semi-axle. When purchasing, the taper of the half shaft should match the taper of the hub.