RAILWAY VEHICLE BOGIE Russian patent published in 2001 - IPC

FIELD: railway transport. SUBSTANCE: invention relates to design of rolling stock bogies with follow-up system for automatic control of bogie movement in track. Bogie has wheelsets connected with frame in horizontal plane by radius rods, traction motors designed for transmitting torque to wheelset through gear train, springs of spring suspension, pneumatic vibration dampers, inclined links designed for transmitting traction and brake forces, follow-up system for automatic control of bogie moving in rail track including measuring unit in form of magnetic rail inductance transducers, control microprocessor unit, hydraulic pumping station and longitudinal power hydraulic cylinders of operating unit. Two traction electric motors are installed with output shafts pointed in different directions along transverse central axis of bogie. Housing of traction reduction gears are connected to each traction motor at output shaft side. Traction reduction gears are secured on bogie frame and are coupled by output shafts through balanced articulated rod couplings with each wheel of wheelsets at one side of bogie. Brake drums are installed at external sides of traction reduction gear housing on output shaft extensions. Brake drums are provided with brake shoes, drive hydraulic cylinders and hydraulic cylinder lever travel regulator. Wheels of wheelsets are installed on antifriction bearings and duplicate sliding bearings on nonrotating axles connected for movement with frame by central radius rods with rubber shock absorbers in joints with axle and cross beams of frame and longitudinal power hydraulic cylinders arranged in parallel with central radius rods. Body rests on bogie frame through FLEXICOIL type springs and hydraulic cylinders of hydropneumatic springs installed in tandem. Frame is additionally coupled with body in horizontal plane by hinge- mounted cross power hydraulic cylinders. Longitudinal and cross power hydraulic cylinders are united by operating unit of follow-up system for automatic control of bogie moving in rail track. Measuring unit of system is furnished with read off heads receiving information from track storage elements and with pulse tachometer. Moreover, back spaces of cross power hydraulic cylinders, rod space of one cylinder and rodless space of other cylinder are connected to form pairs by pipelines provided with adjustable throttle devices. Bogie has also body side stability hydropneumatic stabilizers placed between brackets of nonrotating axles and rail vehicle body. Controlled bogie with wheels free to rotate on axle is not limited in speed, and stability of self-sustained oscillations in horizontal plane. Tanks to it bogies is good for use on high-speed rail vehicles, such as electric train. Follow-up control system provides minimum engagement of wheel flanges with rails on straight and curved sections of track. EFFECT: reduced wear of wheel flanges and rails. 3 cl, 7 dwg