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.

• Corporate Authors:

  Association of American Railroads

  3140 South Federal Street
  Chicago, IL  United States  60605
• Publication Date: 1961-5

Media Info

• Pagination: 25 p.

Subject/Index Terms

• TRT Terms: Bolsters; Box cars; Couplers; Crashes; Freight cars; Gears; Impact loads; Railroad cars; Stresses; Technology; Vehicle dynamics; Velocity
• Uncontrolled Terms: Draft gears
• Geographic Terms: United States
• Old TRIS Terms: Car impact; Impact loading
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

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