Integrated Motor-Gear Box Wheel Hub Drive
AssigneeBombardier Transporation GmbH
InventorsPeter Edward Timan, Hans Peter Trotsch, Martin Bazant, Daniel Martinez-Anon-Perez, Alexander Bauer
Life of this patent
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Abstract
A monorail vehicle includes a chassis supporting a vehicle body, that includes a passenger floor and at least one side wall, and an electrical motor supported by the chassis. A drive wheel is coupled to a rotor of the electric motor with a rotation axis of the drive wheel substantially coaxial with an axis of the rotor. Portions of the drive wheel and the electric motor are positioned on both sides of an imaginary plane extension of the passenger floor.
Claims24
A monorail vehicle comprising:
- a chassis coupled to a body of the monorail vehicle;
- a drive unit coupled to the chassis, the drive unit comprising an electric motor and a planetary gear assembly rotatably coupled to the electric motor, the planetary gear assembly comprising at least 3 planet gears coupled between a sun gear, which is coupled to a rotor of the electric motor, and a ring gear surrounding the planet gears, the planet gears rotatable within the ring gear in response to rotation of the sun gear by the electric motor;
- and
- a rim assembly coupled to the planetary gear assembly for rotation thereby, the rim assembly including a pair of side-by-side rim sections adapted to support a pair of wheels side-by-side for rotation about a rotation axis of the rim assembly that runs coaxial with a rotation axis of the rotor of the electric motor and a rotation axis of the sun gear, the rim assembly further including a hub that extends radially from the rotation axis of the rim assembly and terminates on an interior surface of the rim assembly, wherein one of the rim sections at least partially surrounds and rotates about the planetary gear assembly in response to rotation of the rim assembly by the planetary gear assembly.
A monorail vehicle comprising:
- a chassis supporting an elongated vehicle body that includes spaced sides and a passenger floor, wherein a length direction, a height direction and a width (or side-to-side) direction of the elongated vehicle body correspond to X, Y and Z axes, respectively, of a Cartesian coordinate system, wherein the X and Y axes define an imaginary plane that bisects the vehicle body in half;
- a drive unit coupled to the chassis, the drive unit comprising an electric motor and a gear assembly, the electric motor including a rotor that has an axis that is disposed substantially parallel with the Z axis;
- and
- at least one drive wheel coupled to the rotor via the gear assembly, each drive wheel having a rotation axis that is disposed substantially coaxial with the rotor axis, wherein the drive unit is supported by the chassis with the electric motor and at least part of the gear assembly residing entirely in one of the halves of the vehicle body with at least portions of each drive wheel, the electric motor and the gear assembly residing above a plane of the passenger floor of the vehicle body.
A monorail vehicle comprising:
- a chassis supporting a vehicle body that includes a passenger floor and at least one side wall;
- an electrical motor supported by the chassis;
- and
- a drive wheel coupled to a rotor of the electric motor with a rotation axis of the drive wheel substantially coaxial with an axis of the rotor, wherein portions of the drive wheel and the electric motor are positioned on both sides of an imaginary plane extension of the passenger floor.
Dependencies are inferred from the claim text.