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US 4,440,092 AGranted
Railway steering truck linear induction motor assembly
AssigneeUrban Transportation Development Corporation Ltd.
InventorGeorge Sobolewski
Life of this patent
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AssigneeUrban Transportation Development Corporation Ltd.
InventorGeorge Sobolewski
Estimating the term…
A steerable truck comprises a pair of wheelsets spaced apart along the longitudinal axis of the truck, each supporting a respective steering yoke. A main frame is supported by the yokes which are connected to the main frame to permit rotation of each yoke relative to the main frame about a respective vertical steering axis. A linear induction motor is located beneath the yokes for cooperation with a reaction rail to propel the truck. A suspension device suspends the motor from the yokes to maintain the motor a fixed height from the reaction rail. The thrust of the motor is transmitted to one of the yokes and a centering device is provided to inhibit lateral displacement of the motor relative to the yokes. The suspension device comprises three links each having universal connections at each end for connection to the motor and a respective one of the yokes. Two of the links are connected at spaced locations between one of the yokes and the motor and other of the links is connected between the other of the axle assemblies and the motor. The three point suspension so provided permits steering and torsional deflection between the yokes while vertically supporting the motor.
A steerable truck comprising a main frame for connection to a vehicle body, a pair of axle assemblies supporting said main frame and connected thereto at locations spaced apart along a longitudinal axis of said truck for steering movement about respective spaced generally vertical steering axes, a linear induction motor extending between said axle assemblies for cooperation with a reaction rail to propel said truck, and suspension means extending between said motor and said axle assemblies to locate vertically said motor, said suspension means comprising first link means connecting said motor to one of said axle assemblies to inhibit relative pivotal movement between said motor and said assembly about the longitudinal axis of said truck while permitting relative pivotal movement between said motor and said one axle assembly about its steering axis, and second link means connecting said motor to the other of said axle assemblies to permit relative pivotal movement therebetween about said longitudinal axis and about the steering axis of said other axle assembly, said suspension means thereby permitting steering motion and torsional flexibility between said axle assemblies while inhibiting the application of torsional loads to said motor.
A steerable truck comprising a pair of wheelsets spaced apart along a longitudinal axis of said truck, a pair of yokes each associated with a respective one of said wheelsets, a main frame supported by said yokes and connected thereto to permit rotation of said yokes relative to said main frame about respective spaced vertical steering axes, a linear induction motor located beneath said yokes for cooperation with a reaction rail, suspension means to suspend said motor from said yokes to maintain said motor in a fixed vertical orientation relative to said truck, thrust means to transmit longitudinal forces from said motor to said yokes and centering means to inhibit lateral displacement of said motor relative to said yokes, said suspension means comprising three links each having universal connections at each end for connection to said motor and a respective one of said axle assemblies, two of said links being connected at spaced locations between one of said axle assemblies and said motor and the other of said links being connected between the other of said axle assemblies and said motor, said links thereby permitting steering and torsional deflection between said axle assemblies while being vertically supported thereby.
Dependencies are inferred from the claim text.