ISO-22721-2007.pdf
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1、 Reference number ISO 22721:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 22721 First edition 2007-07-15 Conveyor belts Specification for rubber- or plastics-covered conveyor belts of textile construction for underground mining Courroies transporteuses Spcification pour courroies transporteuses struct
2、ure textile recouvertes de caoutchouc ou de plastique, pour utilisation dans les mines souterraines Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 01:17:16 MDTNo reproduct
3、ion or networking permitted without license from IHS -,-,- ISO 22721:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and
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6、und, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and mi
7、crofilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO
8、 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 01:17:16 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22721:2007(
9、E) ISO 2007 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Construction 3 5 Length 3 6 Width 4 7 Rubber cover. 4 8 Tolerances on total belt thickness and cover thickness 5 9 Transverse fabric joints in multi-ply belting 6 10 Longi
10、tudinal fabric joints. 6 11 Elongation . 7 12 Full thickness tensile strength 7 13 Adhesion 8 14 Troughability. 8 15 Sampling 9 16 Designation . 9 17 Identification 10 Annex A (informative) Items to be agreed between manufacturer and purchaser 11 Annex B (informative) Helpful information to be suppl
11、ied by the purchaser 12 Annex C (informative) Lateral drift (straight running) 14 Bibliography. 15 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 08/07/2007 01:17:16 MDTNo reproducti
12、on or networking permitted without license from IHS -,-,- ISO 22721:2007(E) iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is n
13、ormally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part i
14、n the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prep
15、are International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that s
16、ome of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22721 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 41, Pulleys and belts
17、 (including veebelts), Subcommittee SC 3, Conveyor belts, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Be
18、rnie Not for Resale, 08/07/2007 01:17:16 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 22721:2007(E) ISO 2007 All rights reserved 1 Conveyor belts Specification for rubber- or plastics-covered conveyor belts of textile construction for undergrou
19、nd mining WARNING Users of this International Standard should be aware that relevant electrical and flammability safety requirements are given in EN 14973, which specifies safety classes for belts intended for use in underground installations. When contracts are entered into for the purchase of belt
20、s for use in underground mining, compliance with both this International Standard and the relevant class in EN 14973 should be specified. Attention is drawn to local regulations for safety which might be in place where the belts are to be used. 1 Scope This International Standard specifies requireme
21、nts for rubber- or plastics-covered conveyor belting of textile construction for underground mining on flat or troughed idlers. It is not applicable to light conveyor belts as described in ISO 21183-1. This International Standard does not include requirements for plastics covers. These will need to
22、be agreed upon by the manufacturer and purchaser, taking into account the type of plastics to be used. Related items that are not requirements of this International Standard, but which it is recommended be agreed upon by the manufacturer and purchaser, are included in Annex A. Details recommended to
23、 be supplied by the purchaser of belting with an enquiry are given in Annex B. The ability of a belt to run straight cannot be assessed until the belt is installed. Requirements for this are, therefore, outside the scope of this International Standard; nevertheless, recommendations for lateral drift
24、 are given in Annex C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO
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