某特种车转向器螺栓松动实例分析与改进

Analysis and Improvement of Steering Gear Fixing Bolt Loosening in Special Vehicle

在汽车行业中,螺栓松动是螺栓连接最常见的故障形式之一。螺栓松动会对连接部件产生严重的影响,危及行车安全。文章对某特种车转向器固定螺栓松动的实际案例进行分析计算,探究螺栓紧固力、摩擦系数与拧紧力矩的关系,依此提出相应的优化方案,并进行试验验证。文章详细阐述了螺栓摩擦系数、连接件材料强度、拧紧力矩等因素对螺栓松动的影响,表明调节螺栓摩擦系数、拧紧力矩以及连接件材料强度是改善防松效果的有效措施。

Loosening is one of the most commom form of failure in bolted connections in automobile trade.The lossening of bolts have severe effects on connected parts,which endangered driving safety.This paper analyzes the cause of loose bolts,and research the relationship between bolt tightening force,friction coefficient and tightening torque by theoretical calculation.The article calculates the actual case such of steering gear fixing bolt loosening of a special vehicle.Than the optimization plans have been proposed and the experiments have been completed after analyzed.The article elaborated the effects of bolt friction coefficient,material strength of joints,tightening torque and other factors on bolt loosening,which indicates having a effective measure on the improvement of anti-losseness effect.