BODY BOLSTER STRUCTURE FOR RAILWAY VEHICLE, AND RAILWAY VEHICLE
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United States of America Patent
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Issued Date -
Oct 20, 2022
app pub date -
Jul 6, 2020
filing date -
Jul 6, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A bolster structure is capable of securing a prescribed space between a bolster and an underframe, maintaining the rigidity of the bolster structure, and reducing its weight and cost. The bolster structure is provided on an underframe constituting a floor of a railroad vehicle, and is formed by joining a plurality of shaped members having a multi-layer structure in which a width direction of the structure body is an extrusion direction. The plurality of shaped members include: shaped members 15B and 15C having a region in which a part of layers on an underframe side is notched at a center of the structure body in the width direction; and shaped members including a fastening portion formed by notching a part of layers at both ends of the structure body in the width direction. A side beam of the underframe is fixed by the fastening portion.
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