Tire screw self-locking principle: precision aesthetics of mechanical structure

As a track engineer, when disassembling the wheels, pay attention to the thread details: triangular threads achieve self-locking through wedge bites, the friction coefficient of the detailed design reaches 0.15 or more; the bolt elastic deformation (axial deformation of 0.2mm) is the key to self-locking; high-performance models are equipped with a cone face gasket, the wedge face forces the nut to rotate when loose, to ensure that the F1 car is stable at 300km / h. Q: Which type of mechanical self-locking and electronic anti-theft screws are more reliable?

The Effect of Driving Vibration on Fastening: Dynamic Balance Engineering Philosophy

Newbei test showed that the axial vibration attenuation rate of 92% when tightening the screw brake correctly, thanks to the self-locking structure damping properties. Key details: The left and right side screw rotation must be opposite (clockwise locked on the right side, counterclockwise tightened on the left side, similar to aircraft specifications), otherwise the left side screw may be loose when braking continuously.

Normal state judgment: the art of data-driven maintenance

Overrun PDI detection with torque anglometer double verification; ordinary household car front wheel torque recommended 105N·m±5% (million times fatigue test optimal solution). Practical tips: When idling test, if the "click" sound continues to turn more than 15 °, it indicates that the torque loss exceeds 20%, need to be re-tightened.