Permanent magnet direct-drive bogie and rail vehicle thereof

Abstract

A permanent magnet direct-drive bogie and a rail vehicle thereof are disclosed. The permanent magnet direct-drive bogie comprises a frame ( 1 ), a wheel set ( 2 ), and a permanent magnet motor ( 3 ); the frame ( 1 ) comprises a longitudinal beam ( 11 ), a cross beam ( 12 ) perpendicular to the longitudinal beam ( 11 ), and end beams ( 13 ) arranged at both ends of the longitudinal beam ( 11 ); a hollow shaft ( 4 ) is sleeved on an axle ( 21 ) of the wheel set ( 2 ), a force transmission seat ( 5 ) is fixed on the axle ( 21 ), the permanent magnet motor ( 3 ) is sleeved on the hollow shaft ( 4 ), one end of the hollow shaft ( 4 ) is connected to the permanent magnet motor ( 3 ) through a flexible coupling ( 6 ), and the other end of the hollow shaft ( 4 ) is connected to the force transmission seat ( 5 ) through a flexible coupling ( 6 ); both longitudinal sides of the cross beam ( 12 ) are provided with protrusions ( 121 ); the permanent magnet motor ( 3 ) is flexibly connected to the frame ( 1 ) through a swing rod ( 7 ) and a suspension rod ( 17 ), one end of the swing rod ( 7 ) is hung on the protrusion ( 121 ), the other end is connected to a housing of the permanent magnet motor ( 3 ), and the axis of the swing rod ( 7 ) is arranged longitudinally; one end of the suspension rod ( 17 ) is connected to the housing of the permanent magnet motor ( 3 ), and the other end is suspended on the end beam ( 13 ); and the permanent magnet motor ( 3 ) is laterally movable.

1 . A permanent magnet direct-drive bogie, comprising a frame, a wheel set arranged on the frame, and a permanent magnet motor, wherein the frame comprises a longitudinal beam, a cross beam perpendicular to the longitudinal beam, and end beams arranged at both ends of the longitudinal beam; wherein a hollow shaft is sleeved on an axle of the wheel set, a force transmission seat is fixed on the axle, the permanent magnet motor is sleeved on the hollow shaft, one end of the hollow shaft is connected to the permanent magnet motor through a flexible coupling, and the other end of the hollow shaft is connected to the force transmission seat through a flexible coupling;
 both longitudinal sides of the cross beam are provided with protrusions;   the permanent magnet motor is flexibly connected to the frame through a swing rod and a suspension rod, one end of the swing rod is hung on the protrusion, the other end is connected to a housing of the permanent magnet motor, and the axis of the swing rod is arranged longitudinally; one end of the suspension rod is connected to the housing of the permanent magnet motor, and the other end is suspended on the end beam; and the permanent magnet motor is laterally movable.   
     
     
         2 . The permanent magnet direct-drive bogie according to  claim 1 , wherein the flexible coupling is a laminated coupling; the laminated coupling comprises a first driving disc, a second driving disc, and a metal laminate; an inner sleeve of the permanent magnet motor is connected to the first driving disc, the first driving disc is connected to one end of the hollow shaft by the metal laminate, the second driving disc is connected to the other end of the hollow shaft, and the second driving disc is connected to the force transmission seat by the metal laminate. 
     
     
         3 . The permanent magnet direct-drive bogie according to  claim 1 , wherein the middle of the cross beam is provided with a through hole. 
     
     
         4 . The permanent magnet direct-drive bogie according to  claim 3 , wherein the outer contour of the cross beam is of an octagonal structure, and two outermost sides of the octagonal cross beam in the longitudinal direction are the protrusions. 
     
     
         5 . The permanent magnet direct-drive bogie according to  claim 1 , wherein a shock absorber for damping out the vibration of the permanent magnet motor is arranged between the permanent magnet motor and the end beam, and the angle between the axial direction of the shock absorber and the vertical plane is more than 0 degree and less than 90 degrees. 
     
     
         6 . A rail vehicle, comprising a vehicle body, wherein further comprising the permanent magnet direct-drive bogie according to  claim 1 , the end beams comprise a front end beam and a rear end beam, and a first traction seat is arranged at the bottom of the rear end beam; the vehicle body is provided with a traction beam, and a second traction seat is arranged at the bottom of the traction beam; and the first traction seat is connected to the second traction seat by a traction rod. 
     
     
         7 . A rail vehicle, comprising a vehicle body, wherein further comprising the permanent magnet direct-drive bogie according to  claim 1 , a third traction seat is arranged at the bottom of the protrusion on each of the both longitudinal sides of the cross beam, and the middle of the cross beam is provided with a through hole;
 the rail vehicle further comprises a traction pin, two pull rods, and a fourth traction seat arranged on the vehicle body, and the fourth traction seat corresponds to the through hole;   one ends of the two pull rods are respectively connected to the third traction seats in one-to-one correspondence, the other ends are connected to the traction pin, and the two pull rods are centrosymmetric with respect to the traction pin;   the fourth traction seat is inserted into the through hole and connected to the traction pin.