Analyze And Study On Anti-Looseness Properties Of Double-Nuts

Screw-jointed is used widely. With the development of mechanics and industry, more and more people is paying attention to the problem of anti-looseness while using screw-jointed. Double-nut is one of anti-looseness ways that are usually used, and double-nut has more efficiency anti-looseness characteristic than other screw-jointed's. In this thesis, through vibratile experiment, the author experimentally studied the anti-looseness effect of double-nut-jointed and analyzed the connection of torque between two nuts.All the tests in this thesis were performed on a transverse vibratile tester. In order to success in making experiments, the author manufactured the transverse vibratile tester, and described the theory, component and characteristic of the equipment. The equipment is proved to be more perfect for making this experiment through practices. The experiments include two contents. On the one hand, We have made experiments to prove the connection of torque between two nuts. The power of bolt is relate to not only the torque of the first nut but also the second nut's. With different torque, We screwed down double-nut, and made experiments which prove double-nut is of anti-looseness when the torque of the first nut outweigh the second nut's. Finally we concluded the curves of time and torque.