| 主权项 |
1. A brake beam assembly comprising:
a generally V-shaped tension member having a first end portion and a second end portion opposite the first end portion and an apex portion located adjacent a front side of the brake beam assembly between the first end portion and the second end portion, the first end portion of the generally V-shaped tension member having a first aperture and a second aperture, and the second end portion of the generally V-shaped tension member having a first aperture and a second aperture; a compression member located adjacent a rear side of the brake beam assembly and having a first end portion and a second end portion opposite the first end portion and a central portion positioned between the first end portion and the second end portion, the first end portion of the compression member having a first aperture and a second aperture, and the second end portion of the compression member having a first aperture and a second aperture; a strut member positioned between the generally V-shaped tension member and the compression member, the strut member having a first end portion and a second end portion opposite the first end portion, the first end portion of the strut member attached to the apex portion of the generally V-shaped tension member, the second end portion of the strut member attached to the central portion of the compression member; a first end extension having a pocket guide coupling portion and a brake head coupling portion integrally formed, the brake head coupling portion having a first opening and a second opening, the pocket guide coupling portion sized and configured for attachment to a portion of a railway car, the pocket guide coupling portion of the first end extension defining a rear cavity therein to prevent water accumulation and further defining a solid front end, the rear cavity having an opening facing in a rearward direction of the brake beam assembly from the rear side thereof, the rear cavity being further from the apex portion of the generally V-shaped tension member than the solid front end, the solid front end facing in a frontward direction of the brake beam assembly toward the front side thereof; a second end extension having a pocket guide coupling portion and a brake head coupling portion integrally formed, the brake head coupling portion having a first opening and a second opening, the pocket guide coupling portion sized and configured for attachment to a portion of a railway car, the pocket guide coupling portion of the second end extension defining a rear cavity therein to prevent water accumulation and further defining a solid front end, the rear cavity having an opening facing in a rearward direction of the brake beam assembly from the rear side thereof, the rear cavity being further from the apex portion of the generally V-shaped tension member than the solid front end, the solid front end facing in a frontward direction of the brake beam assembly toward the front side thereof; a first brake head integrally formed of metal having sidewalls that define a cavity sized and configured to receive the first end portion of the tension member, the first end portion of the compression member and the brake head coupling portion of the first end extension, the cavity being in communication with a first hole and a second hole formed in the sidewalls of the first brake head, the first end portion of the compression member, the first end portion of the tension member and the brake head coupling portion of the first end extension positioned within the cavity of the first brake head such that the first aperture of the first end portion of the tension member, the first aperture of the first end portion of the compression member, the first opening of the brake head coupling portion of the first end extension and the first and second holes of the first brake head are aligned to receive a first fastener, the first fastener being a lone fastener attaching the first end portion of the compression member, the first end portion of the tension member and the brake head coupling portion of the first end extension to the first brake head when the first fastener extends through the first aperture of the first end portion of the tension member, the first aperture of the first end portion of the compression member, the first opening of the brake head coupling portion of the first end extension and the first and second holes of the first brake head; and a second brake head integrally formed of metal having sidewalls that a cavity sized and configured to receive the second end portion of the tension member, the second end portion of the compression member and the brake head coupling portion of the second end extension, the cavity being in communication with a first hole and a second hole formed in the sidewalls of the second brake head, the second end portion of the compression member, the second end portion of the tension member and the brake head coupling portion of the second end extension positioned within the cavity of the second brake head such that the first aperture of the second end portion of the tension member, the first aperture of the second end portion of the compression member, the first opening of the brake head coupling portion of the second end extension and the first and second holes of the second brake head are aligned to receive a second fastener, the second fastener being a lone fastener attaching the second end portion of the compression member, the second end portion of the tension member and the brake head coupling portion of the second end extension to the second brake head when the second fastener extends through the first aperture of the second end portion of the tension member, the first aperture of the second end portion of the compression member, the first opening of the brake head coupling portion of the second end extension and the first and second holes of the second brake head, wherein the first end extension, the first end portion of the tension member and the first end portion of the compression member are aligned such that the second opening of the brake head coupling portion of the first end extension, the second aperture of the first end portion of the tension member and the second aperture of the first end portion of the compression member are aligned to receive a third fastener attaching the first end extension, the first end portion of the tension member and the first end portion of the compression member together at a position external to the first brake head cavity and positioned closer to the central portion of the compression member than the first brake head, wherein the second end extension, the second end portion of the tension member and the second end portion of the compression member are aligned such that the second opening of the brake head coupling portion of the second end extension, the second aperture of the second end portion of the tension member and the second aperture of the second end portion of the compression member are aligned to receive a fourth fastener attaching the second end extension, the second end portion of the tension member and the second end portion of the compression member together at a position external to the second brake head cavity and positioned closer to the central portion of the compression member than the second brake head, wherein the first end extension and first brake head are independent structures, wherein the second end extension and the second brake head are independent structures, wherein the first brake head is removable by removal of the first fastener with the tension member, compression member and first end extension remaining attached via the third fastener such that the first brake head is removable from the brake beam assembly without disassembly of any of the first end extension, compression member and tension member that are attached together via the third fastener and the fourth fastener, and wherein the second brake head is removable by removal of the second fastener with the tension member, compression member and second end extension remaining attached via the fourth fastener such that the second brake head is removable from the brake beam assembly without disassembly of any of the second end extension, compression member and tension member that are attached together via the third fastener and the fourth fastener. |
