0引言拖拉机悬挂系统作为拖拉机挂接农具的执行元件,具有受力大、强度要求高的特点,为保证其与农机具的灵活连接,一般悬挂杆件端部均设计为万向球关节(以下简称球头)结构。目前,一般将球头通过压合的方式与悬挂杆件装配在一起,但该方式对悬挂杆件材料、设计 0 Introduction Tractor suspension system as a tractor-mounted agricultural implements the implementation of components, has a large force, high strength requirements, in order to ensure its flexible connection with agricultural machinery, the general end of the suspension rod are designed for the universal ball joints Referred to as the ball) structure. At present, the ball head is usually assembled with the hanging rod by means of lamination, but this method is suitable for the material of the hanging rod, the design