US 3,939,779 A · Railway truck assembly

Abstract

A railway truck assembly including a central hollow beam extending transversely of the assembly and adapted for supporting a railroad car. Four wheel units are attached to the central beam with two of the wheels being aligned adjacent one end of the beam and the other two wheels aligned and extending from the opposite end of the beam. Each wheel unit includes inside and outside arms for supporting an axle at the distal ends for, in turn, rotatably supporting a wheel. The arms extend from a torsion bar support sleeve which, in turn, surrounds a torsion bar. The outward end of each sleeve is splined to the torsion rod and the inward end of the torsion rod is splined to a reaction sleeve which is, in turn, secured to the central beam. The outward end of each torsion bar is supported by a bearing in a cage member secured to the central beam and the inward end of each sleeve member is rotatably supported by a bearing engaging the splined inward end of the torsion rod. Resilient or compressible thrust bearings are disposed at each end of the sleeve member for allowing the sleeve member and, thus, the wheel unit to move longitudinally relative to the torsion rod. Each of the outwardly disposed arms includes a cavity in which is disposed a hydraulic actuator for urging a brake shoe toward the adjacent wheel. Brake shoe retainer pins are disposed on opposite sides of the actuator in bores in the arm for releasably engaging the brake shoes.

Claims21

Dependent claims

A railway truck assembly comprising;

carriage means for connection to a railway car, four wheels for engaging railway track, four axles with each axle supporting one of said wheels, four arm means with each arm means supporting one of said axles, and four torsion means with each torsion means connecting one of said arm means to said carriage means so that each of said wheels is independently rotatable and is movable relative to said carriage means independently of the other wheels, each of said arm means including inside and outside arms, one of said axles extending between the distal ends of each pair of said inside and outside arms and rotatably supporting one of said wheels between each pair of said inside and outside arms, one of said arms of each pair including brake shoe support means and brake shoe actuator means adjacent said brake shoe support means for urging a brake shoe supported by said brake shoe support means toward the adjacent wheel, said brake shoe support means including first and second retainer means disposed on opposite sides of each of said brake shoe actuator means for releasable connection to a brake shoe.

A railway truck assembly comprising;

carriage means for connection to a railway car, four wheels for engaging railway track, four axles with each axle supporting one of said wheels, four arm means with each arm means supporting one of said axles and four torsion means with each torsion means connecting one of said arm means to said carriage means so that each of said wheels is independently rotatable and is movable relative to said carriage means independently of the other wheels, each of said arm means including inside and outside arms, one of said axles extending between the distal ends of each pair of said inside and outside arms and rotatably supporting one of said wheels between each pair of said inside and outside arms, one of said arms of each pair including brake shoe support means and brake shoe actuator means adjacent said brake shoe support means for urging a brake shoe supported by said brake shoe support means toward the adjacent wheel, each of said torsion means including an independent torsion rod, each of said torsion rods having an inward end nonrotatably supported by said carriage means and an outward end rotatably supported by said carriage means, each of said arm means including a sleeve member extending transversely of and rigidly secured to said arms thereof, each of said sleeve members surrounding an adjacent torsion rod and having an outward end nonrotatably supported by said adjacent torsion rod and an inward end rotatably supported by said adjacent torsion rod.

Dependencies are inferred from the claim text.

Railway truck assembly

Life of this patent

Railway truck assembly

Life of this patent

Abstract

Claims21