BS-EN-ISO-14890-2003.pdf

BRITISH STANDARD Conveyor belts Specification for rubber or plastics covered conveyor belts of textile construction for general use ICS 53.040.20 ? BS EN ISO 14890:2003 Incorporating corrigendum April 2009 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI BS EN ISO 14890:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2003 © BSI 200 National foreword Amendments issued since publication This British Standard is the UK implementation of EN ISO 14890:2003. It is identical with ISO 14890:2003. It supersedes BS 490-1:1990 and BS 490-10.5:1984 which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/67, Conveyor belts. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from Date Comments Modification of the supersession paragraph in the ational foreword ISBN 978 0 580 66063 4 legal obligations. 9 the 2009 /corrigenda n 30 April Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 14890 May 2003 ICS 53.040.00 English version Conveyor belts - Specification for rubber or plastics covered conveyor belts of textile construction for general use (ISO 14890:2003) Courroies transporteuses - Spécification pour courroies tranporteuses recouvertes de caoutchouc ou de plastique à structure textile, d'usage général (ISO 14890:2003) Fördergurte - Anforderungen an Textilfördergurte mit Gummi- oder Kunststoff-Deckplatten für allgemeine Anwendungen (ISO 14890:2003) This European Standard was approved by CEN on 10 April 2000. 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 national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14890:2003 E Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 2 Contents page Foreword3 Introduction4 1 Scope5 2 Normative References5 3 Terms and definitions6 4 Designation7 5 Construction10 6 Length10 7 Width11 8 Rubber cover (see Table 5)12 9 Tolerances on total belt thickness and cover thickness14 10 Transverse fabric joints in multi-ply belting14 11 Longitudinal fabric joints in multi-ply belting and Duo-ply belting15 12 Longitudinal fabric or carcass joints in solid woven and mono ply belting15 13 Elongation16 14 Full thickness tensile strength (see clause 3)16 15 Adhesion16 16 Troughability17 17 Sampling18 18 Identification18 Annex A (informative) Items to be agreed between manufacturer and purchaser19 Annex B (informative) Helpful information to be supplied by the purchaser20 Annex C (informative) Lateral Drift (Straight Running)22 Bibliography23 BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 3 Foreword This document (EN ISO 14890:2003) 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)“. 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 November 2003, and conflicting national standards shall be withdrawn at the latest by November 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 4 Introduction In the preparation of this Part of this standard, consideration has been given to the work of ISO Committee ISO/TC41/SC3, “Conveyor belts”, and the following standards for conveyor belts have been followed as far as possible. ISO 251:1987Conveyor belts - Widths and lengths ISO 252-1Textile conveyor belts - Adhesive strength between constitutive elements - Part 1 : Methods of test ISO 282:1992Conveyor belts - Sampling ISO 283-1Textile conveyor belts - Full thickness tensile testing - Part 1: Determination of tensile strength, elongation at break and elongation of the reference load. ISO 432:1989Ply type conveyor belts - Characteristics of construction ISO 433:1991Conveyor belts - marking ISO 583:1990Conveyor belts with a textile carcass Tolerances on total thickness and thickness of covers Direct measurement method ISO 703:1988Conveyor belts - Troughability - Characteristics of transverse flexibility and test method BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 5 1 Scope This European Standard specifies requirements for rubber and/or plastics covered conveyor belting of textile construction for general surface use on flat or troughed idlers. This standard is not suitable or valid for light conveyor belts as described in EN 873. Items that are not requirements of this standard, but need to be agreed between the manufacturer and the purchaser, are included as an informative annex A. A list of the details that should be supplied by the purchaser of belting with an enquiry is given in informative annex B. 2 Normative References This European Standard incorporates 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 Standard only when incorporated in it by an amendment or revision. For undated references the last edition of the publication referred to applies (including amendments). ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties. ISO 188, Rubber, vulcanized or themoplastic - Accelerated ageing and heat-resistance tests. ISO 282, Conveyor belts Sampling. ISO 4649, Rubber, vulcanized or themoplastic - Determination of abrasion resistance using a rotating cylindrical drum device. ISO 10247, Conveyor belts Characteristics of covers Classification. EN ISO 252-1, Textile conveyor belts - Adhesion strength between constitutive elements - Part 1: Methods of test (ISO 252-1:1999). EN ISO 283-1, Textile conveyor belts Full thickness tensile testing Part 1: Determination of tensile strength, elongation at break and elongation at the reference load (ISO 283- 1:2000). EN ISO 583-1, Conveyor belts with a textile carcass - Total thickness and thickness of elements - Part 1: Methods of test (ISO 583-1:1999). BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 6 EN ISO 703-1, Conveyor belts - Transverse flexibility and troughability - Part 1: Test method (ISO 703-1:1999). EN 12882, Conveyor belting for general purpose use - Electrical and flammability safety requirements. prEN ISO 16851, Textile conveyor belts - Determination of the net length of an endless (spliced) conveyor belt (ISO/DIS 16851:1998). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 tensile strength greatest measured force during the tensile test divided by the width of the test piece . It is expressed in N/mm 3.2 reference force (reference load) one-tenth of the nominal tensile strength in the longitudinal direction multiplied by the width of the test piece in mm. It is expressed in Newtons Example: Nominal tensile strength = 1 600 N/mm Reference force = 160N/mm Reference force for 25 mm test piece = 25mm × 160 N/mm = 4 000 N. NOTE This definition does not imply that a 10:1 factor should be used in design calculations, but it is important to bear in mind that any belt with any form of joint or splice should be capable of transmitting the desired working strength. 3.3 slab belting conveyor belting made in wide widths and long lengths for subsequent slitting and cutting into narrower widths and shorter lengths to suit individual conveyor installations 3.4 solid woven belting conveyor belting consisting of a carcass of more than one ply, the plies being interlocked in the weave, or bound together by binding threads in the course of weaving 3.5 mono-ply belting conveyor belting with a carcass consisting of one ply of woven textile fabric BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 7 3.6 duo-ply belting conveyor belting with a carcass consisting of two plies of woven textile fabric bonded together by an intermediate layer of elastomer of sufficient thickness to allow the incorporation of a tension element in the joint 3.7 multi-ply belting Conveyor belting with a carcass of two or more plies of woven textile fabric,the adjacent plies being bonded together by an intermediate layer of elastomer 3.8 primary yarn load carrying yarn which contributes more than 50 % of the tensile strength 3.9 secondary yarn load carrying yarn which contributes less than 50 % of the tensile strength 4 Designation 4.1 Belting is designated by reference to the following conveyor belt characteristics : a) reference to this European Standard, i.e. EN ISO 14890; b) the required length in metres; c) the required width in millimetres (see Table 4); d) the fibre type of the carcass, in both the warp and weft directions, e.g. polyester (E) (warp) polyamide (P), (weft) (EP) (see Table 1); e) the full thickness tensile strength in N/mm of belt width (see Table 8); f) the number of plies or belt type (see clause 3); g) top cover thickness in millimetres; h) bottom cover thickness in mm (where relevant, see clause 5); j) cover classification (see Table 5), where appropriate; k) safety category according to EN 12882. BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 8 4.2 Examples of ordering are given below Example 1: Multiply-ply belt A 400 m long belt, 1 200 mm wide, textile material in the longitudinal direction of polyester (E) and in the transverse direction of polyamide (P), having a minimum full thickness tensile strength of 1 000 N/mm belt width, with 5 plies and a top cover thickness of 4 mm, a bottom cover thickness of 2 mm, a cover classification of H in accordance with Table 5, and complying with the safety requirements of category 1 of EN 12882. Example 1 - Designation EN ISO LengthWidthTextile materialTensile Strength N/mm No of plies Cover gauge (mm) Cover Class Safety category according to EN 12882 14890 (m) (mm) WarpWeft Top Bottom 4001 200 E P 1 0005 4 2 H 1 Example 2: Duo-ply belt A 200 m long belt, 1 000 mm wide, textile material in the longitudinal direction of polyester cotton (EB) and in the transverse direction of polyamide cotton (PB), having a minimum full thickness tensile strength of 800 N/mm, with 2 plies and a top and bottom cover of 1,5mm, complying with the safety requirements of category 2A of EN 12882. Example 2 - Designation EN ISO LengthWidthTextile materialTensile Strength N/mm No of plies Cover gauge (mm) Cover Class Safety category according to EN 12882. 14890 (m) (mm) WarpWeft Top Bottom 2001 000 EB PB 800 2 1,5 1,5 N/A 2A BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 9 Example 3: Mono-ply A 150 m long, 1 200 mm wide Mono-ply belt, having a polyester warp (E) and a polyamide weft (P), a full thickness tensile strength of 630 N/mm belt width and a top cover thickness of 6 mm, a bottom cover thickness of 2 mm, and a cover classification of D in accordance with Table 5, complying with safety requirement of category 1 of EN 12882. Example 3 - Designation EN ISO LengthWidthTextile materialTensile Strength N/mm No of plies Cover gauge (mm) Cover Class Safety category according to EN 12882 14890 (m) (mm) WarpWeft Top Bottom 1501 200 E P 630 1 6 2 D 1 Example 4: Solid woven belt A 300 m long, 1 600 mm wide Solid Woven belt having a combined polyester and polyamide warp (EP) and a polyamide cotton weft (PB) and an integrally woven cotton (B) warp pile, having a minimum tensile strength of 1 250 N/mm belt width and 1,5 mm top and bottom covers, complying with safety requirement of category 3A of EN 12882. Example 4 - Designation EN ISO LengthWidthTextile materialTensile Strength N/mm No of pliesCover gauge (mm) cover class Safety category accordin g to EN 12882 14890 (m) (mm) WarpWeft Top Bottom 3001 600 EP(B) PB 1250SW(1) 1,5 1,5 N/A 3A BS EN ISO 14890:2003 Licensed CopyChinese University of Hong Kong, 13/06/2009 08:00, Uncontrolled Copy, (c) BSI EN ISO 14890:2003 (E) 10 Table 1 - CODE DESIGNATION OF YARN Code LetterYarn BCotton ZStaple Rayon RRayon PPolyamide EPolyester DAramid GGlass NOTE Where a fabric contains a secondary yarn, its identity shall be indicated by the use of bracketed characters to designate yarn type. 5 Construction The carcass shall consist either of one or more plies of woven fabric or of solid woven fabric and shall be impregnated or coated with a rubber or plastics mix. Where a breaker consisting of open mesh fabric, or cord fabric or cord layer is placed b