Railway rolling stock – Trucks – Radial
Patent
1976-11-24
1979-01-16
Makay, Albert J.
Railway rolling stock
Trucks
Radial
105199R, 1052241, 188 43, 188 53, 267 3, B61F 514, B61F 516, B61F 538, B61H 1324
Patent
active
041343433
ABSTRACT:
A radial axle railway truck has a pair of wheel and axle assemblies with profiled wheel treads of greater than conventional conicity to steer the assemblies by means of the differential effect of the inner and outer wheel diameters on curved track, the axle bearings are located inboard of the wheels, and the truck frame side members are correspondingly located inboard of the wheels and there supported on the axle bearings such that longitudinally acting resilient restraint means between the axle bearings and the truck frame resist substantial movements of the axles longitudinally of the truck frame while offering only limited resistance as a couple to steering movements of the axles with respect to the truck frame because of the relatively short transverse moment arm between the longitudinally acting resilient means. The inboard location of the axle bearings permits the use of straight links extending diagonally of the truck and pivotally connected at their ends to the diagonally opposite axle bearings to oppose hunting movements of the wheel and axle assemblies during movement along tangent track and to couple wheel-induced turning movements of the wheel and axle assemblies in opposite directions on curved track so as to avoid interference with their self-steering ability. An equalized tread brake mechanism is provided to compensate automatically for the differences in longitudinal wheel spacing at the opposite sides of the truck on curved track.
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Beltran Howard
Burgess F. Travers
General Steel Industries, Inc.
Makay Albert J.
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