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DRAFT GEAR RESEARCH IMPACT TESTS OF AAR APPROVED STANDARD POCKET DRAFT GEARS

This report describes an investigation conducted by the utilization of impacts made on eleven AAR approved (24-5/8 in.) standard pocket draft gears. During the study two gears of the same manufacturer were installed in two identical 50-ton box cars and impacted under test conditions of: (a) empty cars (no load), (b) half or medium load, and (c) full load. The draft gears investigated included six friction, three rubber, and two friction-rubber types. This investigation resulted in the development of a large volume of data related to such variables as force input, gear closure, stress distribution in the car underframe and car body, and load accelerations. Only a part of the data has been reduced and analyzed for this report. No attempt has been made to present any conclusions.

Media Info

  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00033249
  • Record Type: Publication
  • Report/Paper Numbers: MR-348
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM