Railway vehicle drive
AssigneeCarl Hurth Maschinen- und Zahnradfabrik GmbH & Co.
InventorJohann Eichinger
Life of this patent
Estimating the term…
Abstract
Drive system for a railway vehicle. In a railway vehicle utilzing a high speed motor whose output shaft is arranged generally parallel to the direction of movement of the vehicle, there is provided a gearing system for connecting said motor to a driven axle of the vehicle of such nature that only a minimum of unsprung mass is present and said gearing occupies only a small amount of space. In general, the motor drives through at least two series connected gear reduction units and the output of the second thereof drives a hollow shaft surrounding the vehicle axis and flexibly connected thereto. Thus, the entire drive system excepting only for the flexible connection to the axle may be mounted on the spring supported portion of the vehicle.
Claims11
A drive mechanism for at least one axle of a sprung railway vehicle having at least a pair of axles, comprising:
- frame means being sprung on said axles;
- high speed drive motor means mounted on said frame means and being arranged between said pair of axles and having output shaft means extending in a direction parallel to the longitudinal direction of travel of said vehicle;
- means defining a hollow shaft encircling said one axle and first support means on said frame means for supporting said hollow shaft for rotation, said hollow shaft having an axis parallel to the axis of said one axle and a sufficiently large inner diameter to permit a relative radial movement between said one axle and said hollow shaft;
- means defining at least one torque transmitting member connected to and extending between said one axle and said hollow shaft, said torque transmitting member including lever means and pivot means for pivotally connecting said lever means to said axle and said hollow shaft for permitting said relative radial movement between said one axle and said hollow shaft while simultaneously maintaining said parallel axes in alignment and transmitting torque therebetween;
- gear drive means supported on said sprung frame and connecting said output shaft means to said hollow shaft, said gear drive means consisting of at least two stages of reduction of speed, one of said stages of reduction of speed being a bevel gear train having a driving member and a driven member, said driving member consisting of a bevel pinion gear and said driven member consisting of a bevel gear drivenly connected to said bevel pinion gear, said driven bevel gear being fixedly mounted to said hollow shaft, the axes of said bevel gear train being offset from each other and the other of said stages of reduction of speed being a spur gear train having a driving member and a driven member, said driving member consisting of a spur pinion gear connected to said output shaft means of said drive motor means, said driven member consisting of a spur gear drivenly connected to said spur pinion gear and second support means on said frame means for supporting said spur gear for rotation on said frame means and connecting means for connecting said spur gear to said bevel pinion gear.
A drive mechanism according to claiim 2, wherein said spur gear train is a planetary gearing.
A drive mechanism for at least one axle of sprung railway vehicle having at least a pair of axles, comprising:
- frame means being sprung on said axles;
- high speed drive motor means mounted on said frame means and being arranged between said pair of axles and having output shaft means extending in a direction parallel to the longitudinal direction of travel of said vehicle;
- means defining a hollow shaft encircling said one axle and first support means on said frame means for supporting said hollow shaft for rotation, said hollow shaft having an axis parallel to the axis of said one axle and a sufficiently large inner diameter to permit a relative radial movement between said one axle and said hollow shaft;
- means defining at least one torque transmitting member connected to and extending between said one axle and said hollow shaft, said torque transmitting member including lever means and pivot means for pivotally connecting said lever means to said axle and said hollow shaft for permitting said relative radial movement between said one axle and said hollow shaft while simultaneously maintaining said parallel axes in alignment and transmitting torque therebetween;
- gear drive means supported on said sprung frame and conncting said output shaft means to said hollow shaft, said gear drive means consisting of at least two stages of reduction of speed, one of said stages of reduction of speed being through a bevel gear arrangement having offset axes, one bevel gear being fixedly mounted on said hollow shaft, the other bevel gear being a pinion gear and being connected to a driven shaft of an internally toothed spur gear, said output shaft means having a spur gear connected thereto and engageable with the teeth of said internally toothed spur gear.
Dependencies are inferred from the claim text.