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1、 Reference number ISO 1120:2002(E) ISO 2002 INTERNATIONAL STANDARD ISO 1120 Third edition 2002-04-15 Conveyor belts Determination of strength of mechanical fastenings Static test method Courroies transporteuses Dtermination de la rsistance des assemblages agrafs Mthode dessai statique Copyright Inte
2、rnational Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) PDF disclaimer This PDF file may contain emb
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4、 not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
5、 were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise spe
6、cified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office
7、Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standard
8、s 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) ISO 2002 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
9、 member bodies). The work of preparing International Standards is normally 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, gover
10、nmental and non-governmental, in liaison with ISO, also take part in 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 D
11、irectives, Part 3. The main task of technical committees is to prepare 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
12、bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1120 was prepared by the European Committee for Standardizat
13、ion (CEN) in collaboration with Technical Committee ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee SC 3, Conveyor belts, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Throughout the text of this document, read “.this European Stand
14、ard.“ to mean “.this International Standard.“. This third edition cancels and replaces the second edition (ISO 1120:1984), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/997254500
15、1 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) iv ISO 2002 All rights reserved Contents page Forewordv 1 Scope1 2 Normative references1 3 Terms and definitions1 4 Principle2 5 Apparatus2 6 Test piece2 7 Procedure4 8 Ex
16、pression of results4 9 Test report4 Bibliography6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-
17、,- ISO 1120:2002(E) ISO 2002 All rights reserved v Foreword This document (EN ISO 1120:2002) has been prepared by Technical Committee CEN/TC 188 “Conveyor belts“, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 41 “Pulleys and belts (including veebelts)“. Th
18、is European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2002, and conflicting national standards shall be withdrawn at the latest by October 2002. According to the CEN/CENELEC Internal Regulations,
19、the national standards organizations of the following countries are bound to implement this European Standard : Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the U
20、nited Kingdom. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organiza
21、tion for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) ISO 2002 All rights reserved 1 1 Scope This European Standard
22、specifies a static test method for measuring the strength of a conveyor belt mechanical fastening; the mechanical joints can be either of the type employing a connecting rod or of a type which does not employ a connecting rod. This standard does not cover vulcanized joints. NOTE The purpose of the t
23、est specified in this standard is to eliminate mechanical fastenings of insufficient static strength. A dynamic test will be established at a later date. The standard is not applicable or valid for light conveyor belts as described in EN 873. 2 Normative references This European Standard incorporate
24、s by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European
25、 Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN ISO 283-1:2000, Textile conveyor belts - Full thickness tensile testing - Part 1: Determination of tensile strength, elongation
26、 at break and elongation at the reference load (ISO 283-1:2000). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 width of fastening number of units multiplied by the pitch, or number of hooks multiplied by the pitch 3.2 pitch distanc
27、e between a point on a unit or hook and the corresponding point on the next unit or hook, according to the type of fastening Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16
28、:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) 2 ISO 2002 All rights reserved NOTE See Figure 1. Width of fastening = PITCH x 8Width of fastening = PITCH x 3 Key 1 PITCH 2 Width of fastening Figure 1 - Pitch and width of fastenings ofmechanical fasteni
29、ngs 4 Principle Application of an increasing tensile force to a test piece until the joint made by the mechanical fastening breaks and comes apart. 5 Apparatus 5.1 Metallic adapter plate for joints which employ a connecting rod that can be disconnected. 5.2 Dynamometer as described in EN ISO 283-1:2
30、000. 6 Test piece 6.1 Selection of test pieces Test pieces shall be taken parallel to the axis of the belt and at least 50 mm from its edge. 6.2 Shape, dimensions and preparation 6.2.1 Mechanical belt joints with connecting rod The test pieces shall consist of a full thickness piece of belting cut i
31、n the longitudinal direction, with a minimum length of 100 mm plus the gripped length, (see Figure 2), and a width of 150 mm. The test piece shall be connected to the connecting plate by the mechanical fastener. The fastening width shall be at least 100 mm. Copyright International Organization for S
32、tandardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) ISO 2002 All rights reserved 3 6.2.2 Mechanical belt joints without conn
33、ecting rod The test piece shall consist of two lengths of belting, each of minimum length of 100 mm plus the gripped length, (see Figure 2), and 150 mm wide, assembled by means of the mechanical fastening to be used, not less than 100 mm wide. 6.2.3 Overall width of fastening/number of hooks The ove
34、rall width of fastening shall be not less than 100 mm. To determine the number of hooks use the formula: 100 /PITCH = NUMBER rounded to the next whole number. The overall width of fastening is : PITCH x NUMBER OF HOOKS. EXAMPLE Pitch of one hook : 14 mm Determination of the number of hooks: 100 / 14
35、 mm = 7,1 rounded to 8 Overall width of fastening: 14 mm x 8 = 112 mm. 6.3 Number of test pieces Three test pieces shall be tested. 6.4 Conditioning and test conditions The tests shall start not less than 24h after manufacturing. This time includes 8 h for conditioning at one of the temperature spec
36、ified. - (23 2) C or (20 2) C for temperate temperature control only; - (27 2) C for tropical temperature control only. The tests shall be conducted at the same temperature as used for conditioning. A certain humidity for conditioning and testing is not required. The temperature at which the test pi
37、eces were conditioned and tested shall be reported in the test report. In the event of dispute, the conditioning period shall be 72 h. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/
38、2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) 4 ISO 2002 All rights reserved 7 Procedure 7.1 For mechanical belt joints with a connecting rod Fasten the test piece in one of the grips of the dynamometer and attach the adapter plate to the be
39、lt at the distance between grips shown in Figure 2. Exert the tensile force such that it is applied symmetrically, i.e. that there is no tendency to start rupture at one end of the joint. Separate the grips at a rate of (100 10) mm/min; record the maximum force before the mechanical fastening breaks
40、. 7.2 For mechanical belt joints without a connecting rod Fasten the ends of the test piece in the grips of the dynamometer as shown in Figure 2. Exert the tensile force such that it is applied symmetrically, i.e. that there is no tendency to start rupture at one end of the joint. Separate the grips
41、 at a rate of (100 10) mm/min. Record the maximum force before the mechanical fastening breaks. 8 Expression of results Determine the mean of the values obtained and calculate: a) the average breaking strength of the fastening, in newtons per millimetre width of fastening (see Figures 1 and 2); b) T
42、he strength of the fastening, expressed as a percentage of the full thickness nominal tensile strength, (see EN ISO 283-1:2000). 9 Test report The test report shall include the following information: a) the width of fastening; b) the brand and type of fastener; c) the brand and the type of conveyor
43、belt; d) the results obtained; e) the type of failure of the fastening: e.g. whether the belt is torn or whether the fastener is broken; f) the temperature of conditioning and testing (see 6.4). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=
44、NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) ISO 2002 All rights reserved 5 100 mm 150 mm 1 2 3 4 5 6 7 8 9 10 Key 1 Dynomometer grip 2 Pivot (optional) 3 Adaptor plate 4 Rod 5 Hal
45、f-fastening 6 Pitch 7 Test piece of belt 8 Width of fastening 9 Dynomometer grip 10 Gripped length Figure 2 - Lay-out for static test Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2
46、007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) 6 ISO 2002 All rights reserved Bibliography EN 873:1996, Light conveyor belts - Principal characteristics and applications. Copyright International Organization for Standardization Provided by IHS
47、 under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:16:35 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1120:2002(E) ICS 53.040.20 Price based on 6 pages ISO 2002 All rights reserved Copyright Interna
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