INDIAN RAILWAYS（印度铁路）.pdf

Specification No. RDSO/2011/CG- Date/month of issue Page 1 of 13 03 (Final Draft) Oct. 2011 INDIAN RAILWAYS SCHEDULE OF TECHNICAL REQUIREMENTS FOR PURCHASE AND ACCEPTANCE OF IMPROVED HIGH TENSILE TIGHTLOCK CENTRE BUFFER COUPLER W ITH AAR „H‟ TYPE HEAD AND BALANCED DRAFT GEAR FOR FITMENT ON BG PASSENGER COACHES OF INDIAN RA ILWAYS (Oct -2011) Issued by RESEARCH DESIGNS AND STANDARDS ORGANISATION Manak Nagar, Lucknow-226011 Specification No. RDSO/2011/CG- Date/month of issue Page 2 of 13 03 (Final Draft) Oct. 2011 IMPORTANT Tenderers are advised to go through this schedule carefully. In case they need clarification regarding any of the clauses of this schedule, they should contact Director General (Carriage), RDSO, Manak Nagar, Lucknow – 226 011 (India). FAX No. 91 -0522 – 2450679 Specification No. RDSO/2011/CG- Date/month of issue Page 3 of 13 03 (Final Draft) Oct. 2011 Preamble Since the introduction of Centre Buffer Coupler (CBC), Indian Railways (IR) are facing problem of longitudinal jerks. Though various measures were taken in the past to deal with the problem of jerks, no significant improvement was observed. RDSO has done a comprehensive analytical study on causes for Longitudinal jerks and based on the findings, it has been concluded to use balanced type draft gear for coaching stock. A new specification of CBC with balanced type draft gear has been prepared. The specification has been made to meet IR‟s specific requirement and on th