偏心锁紧螺母又称为坚固锁紧螺母,是日本发明的,目前一些国家已大量仿造生产。这种锁紧螺母的特点是由两个螺母组成,上、下螺母在偏心的内外锥面处局部接触,因此,工作时除了具有一对螺母的螺纹拉紧力之外,还有偏心的楔紧力(如图1、2所示)。施加的扭矩使两个螺母的锥面相互接触愈紧,产生的楔紧力就愈大。试验资料表明,与其它螺母锁 Eccentric locking nut, also known as a solid locking nut, was invented in Japan. At present, a large number of counterfeit products have been manufactured in some countries. This type of locknut is characterized by two nuts, the upper and lower nuts are partially in contact with the eccentric inner and outer cones, so in addition to the thread tension with a pair of nuts in operation, there is an eccentric wedge Tight (as shown in Figure 1,2). The torque applied causes the conical surfaces of the two nuts to come into contact with each other, resulting in greater wedging force. Test data show that with other nut lock