APPLICATION OF THE AUTOMATIC COUPLER TO PASSENGER COACHES. TESTING AUTOMATIC COUPLER EQUIPPED PASSENGER COACHES WITH AND WITHOUT SIDE BUFFERS

The B85 Committee produced a programme to test passenger coaches equipped with the automatic coupler. Coaches with and without side buffers were to be used, and the longitudinal play between the coaches was to be varied. Riding tests by the DB with a push-and-pull train of eight coaches showed that, in general, the results obtained without side buffers were not as good as those obtained with side buffers. The reduction of the play for the "automatic coupler without side buffers" improved the riding quality in the longitudinal direction. Riding tests by the FS with a locomotive hauled train of 18 coaches revealed that, in the case of the "automatic coupler", the modified side buffers used improved appreciably the riding quality without, however, attaining the riding quality resulting from the use of the screw coupling. Previous riding tests had shown quite clearly the effect of the longitudinal play between the coaches. The other tests have made it clear that the side buffers used increased the speed of coupling to an unacceptable extent, but that the protection of the end walls required devices to maintain the necessary distance.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1975-4

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 74 p.

Subject/Index Terms

• TRT Terms: Couplers; Force; Passenger cars; Ride quality; Vehicle design; Vehicle dynamics
• Uncontrolled Terms: Longitudinal forces
• Old TRIS Terms: Automatic couplers; Buffers; Passenger car design; Passenger car dynamics; Question b85
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00052739
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: B85/RP 3/E
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM