Single axle truck suspension for railway flat car
AssigneePullman Standard Inc.
InventorPhillip G. Przybylinski
Life of this patent
Estimating the term…
Abstract
A railway flat car is supported on an underframe which includes suspension support frames provided with single axle suspensions. The frames include longitudinally spaced bolsters including horizontal frame structures on which leaf springs are supported which are also carried by journals supporting the single axles. The ends of the leaf springs are supported by vertical spaced hanger straps pivotally connected at their lower ends to support brackets which are fixed to the bolster structures of the support frames. In the present improvement the brackets are welded into recesses provided in the bolsters providing an improved structure minimizing stress problems. The brackets become an integral part of the bolster structures.
Claims14
In a railway car suspension including a support structure adapted to be connected to the underframe of a rail car;
- said truck support structure including a horizontal frame structure provided at longitudinally spaced portions with laterally extending bolster structures;
- said bolster structures each comprising a pair of spaced upright walls and a top and and bottom wall connected to the upright walls;
- an axle retaining structure connected to said frame structure on opposite sides thereof and projecting downwardly with respect thereto;
- a leaf spring assembly including a pair of laterally spaced leaf springs positioned inwardly of and adjacent to said axle retaining structure;
- an axle and wheel assembly including spaced axle journals positioned to be engageable with said axle retaining structure for limited movement with respect thereto;
- said leaf spring assembly having intermediate
- portions thereof supported on said axle journals;
- hanger strap assemblies supporting opposite ends of said leaf spring assembly and projecting downwardly therefrom;
- said hanger strap assemblies having limited sideways movement;
- the improvement of a support bracket for each hanger strap assembly;
- said support brackets each including a lower pivot portion pivotally connected to lower portions of said hanger strap assemblies;
- said bolster structure upright walls having openings therein;
- and said support brackets each including a body portion extending through said openings and within said bolster structures, and being rigidly secured in said openings and within said bolster structures to allow clearance of the support brackets from the rails when a deep bolster structure is used with a low level underframe in the railway car.
In a railway car suspension including a support structure adapted to be connected to the underframe of a railway car;
- said truck support structure including a horizontal frame structure provided at longitudinally spaced portions with laterally extending bolster structures;
- said bolster structures each comprising a pair of spaced upright walls and a top and and bottom wall connected to the upright walls;
- an axle retaining structure connected to said frame structure on opposite sides thereof and projecting downwardly with respect thereto;
- a leaf spring assembly including a pair of laterally spaced leaf springs positioned inwardly of and adjacent to said axle retaining structure;
- an axle and wheel assembly including spaced axle journals positioned to be engageable with said axle retaining structure for limited movement with respect thereto;
- said leaf spring assembly having intermediate portions thereof supported on said axle journals;
- hanger strap assemblies supporting opposite ends of said leaf spring assembly and projecting downwardly therefrom;
- said hanger strap assemblies having limited sideways movement;
- the improvement of a support bracket for each hanger strap assembly;
- said support brackets each including a lower pivot portion pivotally connected to lower portions of said hanger strap ssemblies;
- said bolster structures each having an opening therein;
- said support brackets each having a body portion extending through one of said openings in one of said bolster structures and extending into said bolster structure to allow clearance of the support brackets from the rails when a deep bolster structure is used with a low level underframe in the railway car;
- and
- said body portion being rigidly attached to said upright walls and bottom wall of said bolster structures for distributing the load received from the bracket in the bolster structure.
Dependencies are inferred from the claim text.