Bending load beam

US4774117A · kind A · utility

Assignee

• Messerschmitt Bolkow Blohm GmbH · DE

Inventors

• Walter Oefner · Otterfing, DE
• Gerhard Singer · Munich, DE

Key dates

• Filing date: Apr 3, 1987
• Grant date: Sep 27, 1988
• Expiry date: Apr 3, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249981
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In a bending load beam, in particular for the truck or bogie frames of rail vehicles, comprising a fiber composite structure relatively rigid at least in the center of the beam, elastic at the beam end sections, having an upper and a lower fiber cord fashioned as respective upper and lower flanges with the fiber oriented in the longitudinal direction of the beam and with a fiber composite core placed between the fiber cords to maintain their distance, the fiber composite core is composed of fiber composite load webs distributed lamellae-like over the width of the beam. The load webs are oriented in the longitudinal direction of the beam, form the boundaries of hollow chambers, and are bound into the upper and the lower fiber cords. The fibers of the load webs are oriented obliquely to the longitudinal direction of the beam, with which the demands of high torsion resistance, great flexural strength and a defined rigidity increasing from the relatively less rigid end sections toward the beam center are met in ways which do justice to the fiber composite material and save weight.