1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationConveyor belts Determination of strength of mechanical fastenings Static test methodBS EN ISO 1120:2012National forewordThis British Standard is the UK implementation of EN ISO 1
2、120:2012. It super-sedes BS EN ISO 1120:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePRI/67, Conveyor belts.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to inc
3、lude all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 77356 3ICS 53.040.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This Brit
4、ish Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 November 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN ISO 1120:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1120 October 2012 ICS 53.040.20 S
5、upersedes EN ISO 1120:2002English Version Conveyor belts - Determination of strength of mechanical fastenings - Static test method (ISO 1120:2012) Courroies transporteuses - Dtermination de la rsistance des assemblages agrafs - Mthode dessai statique (ISO 1120:2012) Frdergurte - Bestimmung der Festi
6、gkeit mechanischer Verbindungen - Statisches Prfverfahren (ISO 1120:2012)This European Standard was approved by CEN on 30 September 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a nationa
7、l standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A versio
8、n in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Cze
9、ch Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. E
10、UROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1120:2012: EBS EN ISO
11、 1120:2012EN ISO 1120:2012 (E) 2 Contents Page Foreword 3BS EN ISO 1120:2012EN ISO 1120:2012 (E) 3 Foreword This document (EN ISO 1120:2012) has been prepared by Technical Committee ISO/TC 41 “Pulleys and belts (including veebelts)“ in collaboration with Technical Committee CEN/TC 188 “Conveyor belt
12、s” the secretariat of which is held by SNV. This 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 April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention
13、 is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 1120:2002. According to the CEN/CENELEC Internal Regulations, t
14、he national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
15、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1120:2012 has been approved by CEN as a EN ISO 1120:2012 without any modification. BS EN ISO 1120:2012IS
16、O 1120:2012(E) ISO 2012 All rights reserved iiiContents Page1 Scope 12 Normative references . 13 Terms and definitions . 14 Principle . 25 Apparatus 26 Test piece . 26.1 Selection of test piece 26.2 Shape, dimensions and preparation 36.3 Number of test pieces 36.4 Conditioning and test conditions 37
17、 Procedure 37.1 For mechanical belt joints with a connecting rod 37.2 For mechanical belt joints without a connecting rod . 48 Expression of results . 49 Test report . 5Bibliography . 7BS EN ISO 1120:2012INTERNATIONAL STANDARD ISO 1120:2012(E)Conveyor belts Determination of strength of mechanical fa
18、stenings Static test method1 ScopeThis International Standard 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 Interna
19、tional Standard does not cover vulcanized joints.This International Standard is neither applicable to nor valid for light conveyor belts, as described in ISO 21183-1.NOTE The purpose of the test specified in this International Standard is to eliminate mechanical fastenings of insufficient static str
20、ength. It is intended to establish a dynamic test at a later date.2 Normative referencesThe 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 docume
21、nt (including any amendments) applies.ISO 283, Textile conveyor belts Full thickness tensile strength, elongation at break and elongation at the reference load Test method3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1width of fasteningnumber o
22、f units multiplied by the pitch, or number of hooks multiplied by the pitch3.2pitchdistance between a point on a unit or hook and the corresponding point on the next unit or hook, according to the type of fasteningSee Figure 1. ISO 2012 All rights reserved 1BS EN ISO 1120:2012ISO 1120:2012(E)1122a)
23、Width of fastening equal to the pitch times eightb) Width of fastening equal to the pitch times threeKey1 pitch2 width of fasteningFigure 1 Pitch and width of fastenings of mechanical fastenings4 PrincipleApplication of an increasing tensile force to a test piece until the joint made by the mechanic
24、al fastening breaks and comes apart.5 Apparatus5.1 Metallic adapter plate for joints which employ a connecting rod that can be disconnected.5.2 Dynamometer, as described in ISO 283.6 Test piece6.1 Selection of test pieceTest pieces shall be taken parallel to the axis of the belt and at least 50 mm f
25、rom its edge.2 ISO 2012 All rights reservedBS EN ISO 1120:2012ISO 1120:2012(E)6.2 Shape, dimensions and preparation6.2.1 Mechanical belt joints with connecting rodThe test pieces shall consist of a full thickness piece of belting cut in the longitudinal direction, with a minimum length of 100 mm plu
26、s 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.6.2.2 Mechanical belt joints without connecting rodThe test piece shall consist of two lengths of belting, ea
27、ch 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 hooksThe overall width of fastening shall be not less than 100 mm. To determine the
28、number of hooks, use the formula:100 divided by the Pitch equal to the Number, rounded to the next whole number.The overall width of fastening is: the pitch times the number of hooks.EXAMPLEPitch of one hook: 14 mmDetermination of the number of hooks: 100/14 mm = 7,1 (rounded to 8)Overall width of f
29、astening: 14 mm 8 = 112 mm.6.3 Number of test piecesThree test pieces shall be tested.6.4 Conditioning and test conditionsThe tests shall start not less than 24 h after manufacturing. This time includes 8 h for conditioning at one of the temperatures specified. (23 2) C or (20 2) C for temperate tem
30、perature 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 pieces were conditioned and tested shall be recorded
31、in the test report.In the event of dispute, the conditioning period shall be 72 h.7 Procedure7.1 For mechanical belt joints with a connecting rodFasten the test piece in one of the grips of the dynamometer and attach the adapter plate to the belt at the distance between grips as shown in Figure 2.Ex
32、ert 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. ISO 2012 All rights reserved 3BS EN ISO 1120:2012ISO 1120:2012(E)Separate the grips at a rate of (100 10) mm/min; record the maximum force before the mechanical faste
33、ning breaks.7.2 For mechanical belt joints without a connecting rodFasten 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 th
34、e grips at a rate of (100 10) mm/min. Record the maximum force before the mechanical fastening breaks.8 Expression of resultsDetermine 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
35、) the strength of the fastening, expressed as a percentage of the full thickness nominal tensile strength (see ISO 283-1:2000).4 ISO 2012 All rights reservedBS EN ISO 1120:2012ISO 1120:2012(E)9 Test reportThe test report shall include the following information:a) the width of fastening;b) the brand
36、and type of fastener;c) the brand and the type of conveyor 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). ISO 2012 All rights reserved 5BS EN ISO 1120:2012
37、ISO 1120:2012(E)Dimensions in millimetres 10015012345678910Key1 dynamometer grip2 pivot (optional)3 adaptor plate4 rod5 half-fastening6 pitch7 test piece of belt8 width of fastening9 dynamometer grip10 gripped lengthFigure 2 Layout for static test6 ISO 2012 All rights reservedBS EN ISO 1120:2012ISO
38、1120:2012(E)Bibliography1 ISO 21183-1, Light conveyor belts Part 1: Principal characteristics and applications ISO 2012 All rights reserved 7BS EN ISO 1120:2012This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Sta
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