US 4,573,555 A · Brake rigging for a railway vehicle truck

Abstract

A brake rigging for a railway vehicle truck including two brake beams and a brake cylinder assembly utilizes two lever assemblies so connected between the end portions of the brake beams and the brake cylinder assembly that actuation of the cylinder assembly moves the brake beams away from one another. The cylinder assembly includes a cylinder and a piston slidably disposed within the cylinder, and the lever assemblies are comprised of two primary levers and two secondary levers. The two primary levers are each pivotally connected to a corresponding end portion of one of the brake beams and to a corresponding one of the cylinder or piston of the brake cylinder assembly. The two secondary levers are each pivotally connected to a corresponding end portion of the other of the brake beams and to a corresponding one of the primary levers intermediate the ends of the primary lever. When the brake cylinder is actuated, the primary levers move relative to one another in order to move the two brake beams farther apart.

Claims23

Dependent claims

A brake rigging for a four-wheel type of railway vehicle truck having a frame with a longitudinal axis and a transverse axis, said rigging comprising:

two brake beams extending transversely of and movably supported by the truck frame, each of said brake beams defining two opposite end portions;
a brake cylinder assembly including a cylinder and a piston, said piston being slidably disposed in said cylinder;
two primary levers each having an effort arm portion and a response arm portion, the response arm portion of each primary lever being pivotally connected to a corresponding end portion of one of said two brake beams, the effort arm portion of each primary lever being pivotally connected to a corresponding one of said cylinder and said piston of said brake cylinder assembly;
and
two secondary levers each having two end portions, one end portion of each secondary lever being pivotally connected to a corresponding end portion of the other of said two brake beams, the other end portion of each secondary lever being pivotally connected to a corresponding one of the primary levers intermediate the effort and response arm portions thereof so that when said brake cylinder assembly is actuated, said effort arm portions of said primary levers move relative to one another to move said two brake beams away from one another.

2 more elements

A brake rigging for a four-wheel type of railway vehicle truck having a frame with a longitudinal axis and a transverse axis, said rigging comprising:

two brake beams extending transversally of and movably supported by the truck frame, each of said brake beams defining a first end portion to one side of the frame and a second end portion to the other side of the frame;
a first lever assembly including a first lever and a second lever, said first lever having a response arm portion and an effort arm portion and said second lever having a first end portion and a second end portion, the first end portion of said second lever being pivotally connected to said first lever intermediate the response arm portion and the effort arm portion thereof for pivotal movement of the first and second levers relative to one another about a first pivotal axis, the response arm portion of said first lever being pivotally connected to the first end portion of one brake beam for pivotal movement relative thereto about a second pivotal axis, the second end portion of said second lever being pivotally connected to the first end portion of the other brake beam for pivotal movement relative thereto about a third pivotal axis so that when said first lever is pivotally moved relative to said one brake beam about said second pivotal axis, the first end portions of said brake beams are moved toward and away from one another;
a second lever assembly including one lever and another lever, said one lever having a response arm portion and an effort arm portion and said another lever having a first end portion and a second end portion, the first end portion of said another lever being pivotally connected to said one lever intermediate the response arm portion and the effort arm portion thereof for pivotal movement of said one and another levers relative to one another about a fourth pivotal axis, the response arm portion of said one lever being pivotally connected to the second end portion of a first of the brake beams for pivotal movement relative thereto about a fifth pivotal axis, the second end portion of said another lever being pivotally connected to the second end portion of the second of the brake beams for pivotal movement relative thereto about a sixth pivotal axis so that when said one lever is pivotally moved relative to said first brake beam about said fifth pivotal axis, the second end portions of the brake beams are moved toward and away from one another;
and
a brake cylinder assembly connected between the effort arm portions of said first lever and said one lever for moving the effort arm portions relative to one another and to thereby move each of said first lever and one of said one lever about a corresponding one of said second and said fifth pivotal axes so that said two brake beams move away from one another.

2 more elements

A brake rigging for a four-wheel type of railway vehicle truck having a frame with a longitudinal axis and a transverse axis said rigging comprising:

two brake beams extending transversely of and movably supported by the truck frame;
a first pair of two levers, each lever in said first lever pair having an effort arm portion and a response arm portion and being pivotally joined to the other lever in said first pair intermediate the effort arm portion and the response arm portion of said other lever, one response arm portion of said first pair being pivotally connected to one of said brake beams and the other response arm portion of said first pair being pivotally connected to the other of said brake beams so that pivotal movement of the levers in said first pair relative to one another moves the response arm portions thereof in pincerlike fashion;
a second pair of two levers, each lever in said second lever pair having an effort arm portion and a response arm portion and being pivotally joined to the companion lever in said second pair intermediate the effort arm portion and the response arm portion of said companion lever, one response arm portion of said second pair being pivotally connected to one of said brake beams and the other response arm portion of said second pair being pivotally connected to the other of said brake beams so that pivotal movement of the levers in said second pair relative to one another moves the response arm portions thereof in a pincerlike fashion;
a first brake cylinder assembly being connected between the effort arm portion of one lever of said first pair and the effort arm portion of one lever of said second pair;
and
a second brake cylinder assembly being connected between the effort arm portion of the other lever of said first pair and the effort arm portion of the other lever of said second pair so that actuation of said first and second brake cylinder assemblies pivotally moves one lever in each lever pair relative to the other lever in its corresponding pair so that said two brake beams move away from one another.

3 more elements

A brake rigging for a four-wheel type of railway vehicle truck having a frame with a longitudinal axis and a transverse axis, said rigging comprising:

two brake beams extending transversely of and movably supported by the truck frame, each of said brake beams defining a first end portion to one side of the frame and a second end portion to the other side of the frame;
a first lever assembly including a first lever and a second lever connected to one another for pivotal movement of said first and second levers relative to one another about a first pivotal axis, said first lever having a portion being connected to the first end portion of one brake beam for pivotal movement relative thereto about a second pivotal axis, said second lever having a portion being connected to the first end portion of the other brake beam for pivotal movement relative thereto about a third pivotal axis so that when said first and second levers are pivotally moved relative to one another about said first pivotal axis, the first end portions of said brake beams are moved toward and away from one another;
a second lever assembly including one lever and another lever connected to one another for pivotal movement of said first and second levers relative to one another about a fourth pivotal axis, said one lever having a portion being connected to the second end portion of a first of the brake beams for pivotal movement relative thereto about a fifth pivotal axis, said another lever having a portion being connected to the second end portion of the second of the brake beams for pivotal movement relative thereto about a sixth pivotal axis so that when said one and another levers are pivotally moved relative to one another about said fourth pivotal axis, the second end portions of said brake beams are moved toward and away from one another;
and
a brake cylinder assembly connected between said first and second lever assemblies for pivotally moving each lever relative to the other lever in its corresponding assembly to thereby move said two brake beams away from one another.

2 more elements

Dependencies are inferred from the claim text.

Brake rigging for a railway vehicle truck

Life of this patent

Brake rigging for a railway vehicle truck

Life of this patent

Abstract

Claims23