Abstract:The 3D model of a new type of traction motor rotor dismantling machine was set up.The dismantling machine mainly included the height adjustment device,extracting arm device,rotation and angle adjustment device,walking device.Combining the closed vector method with D-H method,a kinematical analysis on the body of the dismantling machine was carried out.It was concluded the pose matrix of the height adjustment device taper sleeve.The modal analysis was carried out on the dismantling machine forearm by using finite element analysis software ANSYS,obtaining the natural frequency and vibration mode.It was shown that the frequencies were far greater than its working frequency,resonance would not occurred.Practice shows that the developed prototype can be used to pull the rotor out of the traction motor,automation transshipment of traction motor can be realized.