Railway rolling stock – Trucks
Patent
1976-07-02
1978-01-10
Spar, Robert J.
Railway rolling stock
Trucks
105164, 105175R, 105176, 105182R, 105197D, 105199R, 105210, 105218R, 1052241, 295 34, B61F 310, B61F 514, B61F 524, B61F 530
Patent
active
040672611
ABSTRACT:
A damping suspension for a railway truck having load-bearing members supported on at least two live wheelsets which are self-steering and which are directly interconnected to couple their yawing movements in opposite senses. The wheelsets are self-steering in that they each have profiled treads of high effective conicity and each is suspended by resilient elements having a low elastic yaw constraint to the load-bearing members. The yaw constraints imposed by the resilient elements are lower than the steering forces generated on the wheelsets on curved track as a result of the tread profile. The coupling between the wheelsets takes the form of diagonally connected resilient members for ensuring that the wheelsets do not oscillate in phase with the load-bearing members to thereby damp any hunting oscillations that may tend to occur.
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Beltran Howard
South African Inventions Development Corporation
Spar Robert J.
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