液压油缸缸筒壁厚和螺纹计算.pdf

STANDARD FOR CERTIFICATION No. 2.9 Type Approval Programme 5-778.93 HYDRAULIC CYLINDERS OCTOBER 2002 DET NORSKE VERITAS Veritasveien 1, N-1322 Hvik, Norway Tel.: +47 67 57 99 00 Fax: +47 67 57 99 11 FOREWORD DET NORSKE VERITAS is an autonomous and independent Foundation with the objective of safeguarding life, property and the environment at sea and ashore. DET NORSKE VERITAS AS is a fully owned subsidiary Society of the Foundation. It undertakes classification and certification of ships, mobile offshore units, fixed offshore structures, facilities and systems for shipping and other industries. The Society also carries out research and development associated with these functions. DET NORSKE VERITAS operates a world-wide network of survey stations and is authorised by more than 120 national administrations to carry out surveys and, in most cases, issue certificates on their behalf. Standards for Certification Standards for Certification (previously Certification Notes) are publications that contain principles, acceptance criteria and practical information related to the Societys consideration of objects, personnel, organisations, services and operations. Standards for Certification also apply as the basis for the issue of certificates and/or declarations that may not necessarily be related to classification. A list of Standards for Certification is found in the latest edition of the Introduction booklets to the ”Rules for Classification of Ships” and the ”Rules for Classification of High Speed, Light Craft and Naval Surface Craft”. In “Rules for Classification of Fixed Offshore Installations”, only those Standards for Certification that are relevant for this type of structure, have been listed. The list of Standards for Certification is also included in the current “Classification Services Publications” issued by the Society, which is available on request. All publications may be ordered from the Societys Web site . Det Norske Veritas 2002 Data processed and typeset by Det Norske Veritas Printed in Norway by Det Norske Veritas 05/03/2003 9:35 AM - 5-778.93.doc If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of Det Norske Veritas, then Det Norske Veritas shall pay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 million. In this provision “Det Norske Veritas” shall mean the Foundation Det Norske Veritas as well as all its subsidiaries, directors, officers, employees, agents and any other acting on behalf of Det Norske Veritas. CONTENTS 1. Scope.........................................................................4 1.1 General.......................................................................4 1.2 Objective....................................................................4 1.3 Application ................................................................4 2. Approval, general ....................................................4 2.1 Procedures .................................................................4 2.2 Documentation to be submitted.................................4 3. Design........................................................................5 3.1 Composition...............................................................5 3.2 Design evaluation...................................................... 5 4. Prototype testing of hydraulic locking cylinders.. 7 4.1 General...................................................................... 7 4.2 Endurance test........................................................... 7 4.3 Static strength test..................................................... 7 5. Certification conditions........................................... 8 5.1 Manufacture, workmanship, inspection and testing.. 8 5.2 Type Approval Certificate renewal........................... 8 DET NORSKE VERITAS 4 Standard for Certification- No. 2.9 Type Approval Programme 5-778.93 October 2002 1. Scope 1.1 General This Standard for Certification gives the requirements on which Det Norske Veritas base their approval of hydraulic cylinders. 1.2 Objective Approval of hydraulic cylinders is based upon the requirement in the relevant parts of the following DNV documents: Det Norske Veritas Rules for Classification of Ships Det Norske Veritas Rules for High Speed, Light Craft and Naval Surface Craft The procedure for assessment of conformity of manufactured products (production) is not part of the scope of this Standard for Certification. 1.3 Application The requirements of this Standard for Certification cover hydraulic cylinders for general use, for steering gear application (incl. water jet applications) and hydraulic cylinders with internal mechanical locking arrangements. Det Norske Veritas does, however,。