초록 ▼

Spring suspensions for the sprung mass of railway cars are disclosed and which provide torque arm support of both empty and loaded cars and control of axle movement, as in curving by hinging the outer ends of radial torque arms in support of the sprung mass above the vertical axes of the axles of th

Spring suspensions for the sprung mass of railway cars are disclosed and which provide torque arm support of both empty and loaded cars and control of axle movement, as in curving by hinging the outer ends of radial torque arms in support of the sprung mass above the vertical axes of the axles of the railway car trucks in which the inner ends of the torque arms are integral with hubs of torque reactive, loaded car spring elements mounted on the journal boxes and in which the hubs are concentric with the axles. In a construction where the loaded car spring elements are mounted on a cross bolster between a pair of axles at the ends of high productivity cars, axes of the spring elements are positioned above the axes of the axles and the outer ends of the torque arms are connected to the journal boxes. In either construction, empty car spring elements are disclosed which are interposed between the sprung mass and the car axles and which are hinged to the ends of torque arms of the loaded car spring elements.

대표청구항 ▼

A suspension for the sprung mass of a vehicle such as a railway car and the like which includes at least one axle supporting a pair of wheels at respective ends, the ends being journaled in journal boxes; said suspension comprising torque arm means extending in the longitudinal direction of the car

A suspension for the sprung mass of a vehicle such as a railway car and the like which includes at least one axle supporting a pair of wheels at respective ends, the ends being journaled in journal boxes; said suspension comprising torque arm means extending in the longitudinal direction of the car between a journal box and the sprung mass, first means mounting said torque arm means to the journal box for rotation about a center substantially at the vertical center of the axle, second means mounting said torque arm means to said sprung mass for supporting the sprung mass and for rotation about a center above the vertical center of the axle; torsion means in said torque arm means for resisting vertical deflection of the sprung mass, whereby as the sprung mass is deflected, said second mounting means travels through a relative arc and constitutes means for shifting the axle end longitudinally of the car, said torsion means comprises inner and outer hubs, an annular torsionally stressed elastomeric bushing bonded at its inner and outer circumferential surfaces to said inner and outer hubs, respectively, said torque arm means comprising a pair of oppositely, longitudinally extending torque arms, said first mounting means comprising said inner hub secured concentrically to the journal box, inner ends of said pair of torque arms being respectively integral at their inner ends with said hubs, said second mounting means comprising hinge means for mounting the outer end of one of said torque arms for rotation about a shaft centered above the vertical center of the axle, and further comprising shackle means for mounting the outer end of the other of said torque arms for longitudinal movement, empty car spring means, means hinging said empty car spring means to at least one of said torque arms, means mounting said empty car spring means above said second mounting means for supporting the sprung mass, said empty car spring means comprising second torsion means of less resistance than said first mentioned torsion means and stop means depending from the sprung mass for supporting the sprung mass on said second mounting means as the sprung mass becomes loaded and said empty car spring means is deflected downwardly.