TRACTION MOTOR AND ROTOR BEARING DISASSEMBLY-FREE DISMOUNTING AND MOUNTING STRUCTURE THEREOF

摘要

A rotor bearing disassembly-free dismounting and mounting structure and a traction motor using same. The structure comprises a rotor rotation shaft (2) provided in a housing (1) and rotor bearings (3) sleeved on the rotor rotation shaft (2), and further comprises bearing seats (4) detachably sleeved on the outer rings of the rotor bearings (3), end covers (5) provided on the two axial ends of the housing (1), press rings (6) sleeved on the rotor rotation shaft (2) and tightly attached on the two end surfaces of a rotor core (201), and tensioning rods (7) each detachably connected between the end cover (5) and the press ring (6), and used for making the press ring (6) tightly press the end surface of the rotor core (201) to clamp and fix the rotor rotation shaft (2). The present rotor bearing disassembly-free dismounting and mounting structure may limit the degree of freedom of motion of the rotor rotation shaft (2) in the axial and circumferential directions by means of the press rings (6) under the tensioning action of the tensioning rods (7), can improve the dismounting and mounting efficiency on the basis of achieving the disassembly-free dismounting and mounting of the rotor bearings (3), and avoids the displacement of a rotor caused during the dismounting and mounting operation.