Motorized railway vehicle truck
AssigneeBritish Railways Board
InventorsMaurice G. Pollard, Robert Illingworth
Life of this patent
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Abstract
A motorized vehicle truck having a pair of wheel sets each with a live axle and a motor mounted on each axle with its axis parallel to the associated axle. Each motor is secured to prevent its rotation about the respective axle, but since this permits substantially unrestrained horizontal movement of the motors relative to the truck, braces are employed in the form of at least one link which is connected between the respective motor casings and pivotally, resiliently mounted for rotation about a vertical axis positioned between the motor casings. In this way, a stiffness is provided through the motor casing to restrain parallel shear movement of one wheel set horizontally relative to the other.
Claims4
A railway vehicle truck comprising:
- a pair of side frames;
- at least two wheel sets each having a live axle mounted in a respective pair of axle bearings;
- a traction motor for each wheel set comprising a motor casing mounted for rotation on said associated live axle via a mounting means which otherwise maintains the motor casing rigid with and substantially parallel to said associated live axle;
- means for securing each motor casing to prevent rotation of said motor casing about its said associated live axle;
- and bracing means comprising at least one link member connected between said motor casings on the respective wheel sets and being pivotably resiliently mounted for rotation about at least one vertical axis positioned directly between said casings, said bracing means providing a stiffness through said motor casings to restrain parallel shear movement of one of said wheel sets relative to the other in a substantially horizontal plane.
Dependencies are inferred from the claim text.