For the main structure problems and working requirements of the existing stopper,Using particle swarm optimization to optimize and solve the body′s structural parameters.Using simulation software ADAMS to create the institutions of the virtual model,and then it is simulated for kinematics and dynamics,the results of the simulation has verified and showed that the performance of the institutions has been improved,the working performances are more stable and reliable,the self-adjusting and adaptive performance of the stopper has been...