1、BRITISH STANDARDBS EN ISO 15236-3:2007Steel cord conveyor belts Part 3: Special safety requirements for belts for use in underground installationsThe European Standard EN ISO 15236-3:2007 has the status of a British StandardICS 53.040.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44
2、g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 15236-3:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007ISBN 978 0 580
3、 54808 6National forewordThis British Standard is the UK implementation of EN ISO 15236-3:2007.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 pu
4、blication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPEN
5、NEEUROPISCHE NORMEN ISO 15236-3July 2007ICS 53.040.20English VersionSteel cord conveyor belts - Part 3: Special safety requirementsfor belts for use in underground installations (ISO 15236-3:2007)Courroies transporteuses cbles dacier - Partie 3:Exigences de scurit particulires aux courroies utilises
6、dans des installations souterraines (ISO 15236-3:2007)Stahlseil-Frdergurte - Teil 3: BesondereSicherheitsanforderungen fr den Einsatz untertage (ISO15236-3:2007)This European Standard was approved by CEN on 2 June 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which s
7、tipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard
8、 exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards
9、 bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.E
10、UROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 15236-3:2007: EForeword
11、This document (EN ISO 15236-3:2007) 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 natio
12、nal standard, either by publication of an identical text or by endorsement, at the latest by January 2008, and conflicting national standards shall be withdrawn at the latest by January 2008. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following cou
13、ntries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Sp
14、ain, Sweden, Switzerland and United Kingdom. EN ISO 15236-3:2007Reference numberISO 15236-3:2007(E)INTERNATIONAL STANDARD ISO15236-3First edition2007-07-01Steel cord conveyor belts Part 3: Special safety requirements for belts for use in underground installations Courroies transporteuses cbles dacie
15、r Partie 3: Exigences de scurit particulires aux courroies utilises dans des installations souterraines EN ISO 15236-3:2007ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols and units 3 5 Belt design. 4 6 Design and construction 5 7 Mechanical
16、 requirements. 7 8 Sampling 10 9 Designation . 11 10 Ordering data 11 11 Marking 12 Annex A (informative) Helpful information to be supplied by the purchaser 13 Bibliography . 15 EN ISO 15236-3:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of nati
17、onal standards bodies (ISO 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. Internat
18、ional organizations, governmental 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 ru
19、les given in the ISO/IEC Directives, Part 2. 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
20、 least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some 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 15236-3 was prepared by the European Committee f
21、or Standardization (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). ISO 15236 consists of the following parts, under
22、the general title Steel cord conveyor belts: Part 1: Design, dimensions and mechanical requirements for conveyor belts for general use Part 2: Preferred belt types Part 3: Special safety requirements for belts for use in underground installations Part 4: Vulcanized belt joints EN ISO 15236-3:20071St
23、eel cord conveyor belts Part 3: Special safety requirements for belts for use in underground installations 1 Scope This part of ISO 15236 specifies the performance and constructional requirements applicable to conveyor belts for underground mining having steel cords in the longitudinal direction as
24、reinforcement. The requirements for design and construction apply to the design of single belts as well as the design of complete type series such as those covered in ISO 15236-2. Steel cord belts in accordance with this part of ISO 15236 are intended for use underground in coal mines and in other a
25、pplications where the highest demands for safety against fire and explosion hazards have to be complied with. NOTE At present the requirements can only be met by the use of compounds based on chloroprene rubber for the covers as well as for the bonding rubber. 2 Normative references The following re
26、ferenced 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 37, Rubber, vulcanized or thermoplastic Determination of tens
27、ile stress-strain properties ISO 703, Conveyor belts Transverse flexibility (troughability) Test method ISO 4649:2002, Rubber, vulcanized or thermoplastic Determination of abrasion resistance using a rotating cylindrical drum device ISO 7623, Steel cord conveyor belts Cord-to-coating bond test Initi
28、al test and after thermal treatment ISO 8094, Steel cord conveyor belts Adhesion strength test of the cover to the core layer ISO 7590:2001, Steel cord conveyor belts Methods for the determination of total thickness and cover thickness ISO 7622-2, Steel cord conveyor belts Longitudinal traction test
29、 Part 2: Measurement of tensile strength ISO 2062, Textiles Yarns from packages Determination of single-end breaking force and elongation at break EN 13827, Steel cord conveyor belts Determination of the lateral and vertical displacement of steel cords EN 14973, Conveyor belts for use in underground
30、 installations Electrical and flammability safety requirements EN ISO 15236-3:20072 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 edge width bkthickness of rubber between the outer cord and the belt edge See Figure 1. 3.2 breaker transverse
31、 reinforcement in the conveyor belt, normally of a textile material, attached both above and below or either above or below the layer of longitudinal cords at a distance of at least 1 mm and considered to be part of the cover See Figure 2. NOTE Adapted from ISO 7590:2001, 2.1. 3.3 weft transverse re
32、inforcement in the conveyor belt, normally of steel wires, attached both above and below or either above or below the layer of longitudinal cords at a distance of less than 1 mm and considered to be part of the belt core See Figure 3. NOTE Adapted from ISO 7590:2001, 2.2. EN ISO 15236-3:200734 Symbo
33、ls and units See Table 1. Table 1 Symbols and units Symbol Explanation Unit B Belt width mm FaPull-out force of cord per cord length N/mm FbsBreaking strength of cord taken from cured belt kN FvPull-out force of cord per cord length after thermal treatment N/mm KNMinimum (nominal) breaking strength
34、per width of belt N/mm bkCalculated edge width mm btSupporting belt width mm d Cord diameter mm e See Figure 4 mm F Deflection (troughability) mm hmMedian cord height according to EN 13827 mm n Number of cords s1Nominal belt thickness (see ISO 7590) mm s2Cover thickness carrying side mm s3Cover thic
35、kness pulley side mm s4Thickness of layer between breaker and layer of longitudinal cords mm s5Thickness of layer between weft and layer of longitudinal cords mm s6Thickness of belt core mm t Cord spacing/pitch mm h1Number of cords positioned within a range of hmu 1 mm as a percentage of the total n
36、umber of cords % h2Number of cords positioned within a range of hmof from 1,0 mm to 1,5 mm and expressed as a percentage of the total number of cords % h3Percentage of cords with hm 1,5 mm % EN ISO 15236-3:20074 5 Belt design 5.1 Standard type Conveyor belts conforming to this part of ISO 15236 cont
37、ain steel cords surrounded by a layer of core rubber. This belt core is protected on top and bottom by cover layers (see Figure 1). 5.2 Conveyor belting having transverse reinforcements Requirements for steel cord conveyor belts having breakers are illustrated in Figure 2 and requirements relating t
38、o weft are illustrated in Figure 3. 5.3 Belt core The thickness of the belt core (carcass), s6, for all belt types is defined as follows: s6= s1 s2 s3 s6= d Figure 1 Cross section of standard belt s4= W 1 mm. s6= d (see Table 1). Key 1 breaker aIncluding the breaker. Figure 2 Belt cross section with
39、 breaker EN ISO 15236-3:20075s5= 500 u 1 000 2 1 000 u 2 000 3 2 000 u 3 500 4 3 500 u 5 000 5 5 000 u 7 000 6 7 000 u 10 000 7 for each additional 5 000 m 1 9 Designation The symbol ST shall signify the material (steel cords) used for the tension member in the longitudinal direction. This symbol sh
40、all be followed by the nominal tensile strength of the belt in newtons per millimetre (N/mm) belt width (see Table 2). Breaker transverse reinforcements shall be designated by the cover thickness followed by T (for textile) or S (for steel). Weft transverse reinforcements shall be designated by the
41、letter S (for steel) or T (for textile), after the ST sign, to indicate the material of the weft and the place where it is applied. EXAMPLE 1 A 1 400 m steel cord conveyor belt (ST) of 1 600 mm width, a minimum tensile strength of 5 000 N/mm belt width, cover thickness of 12 mm on the carrying side
42、and 8 mm on the pulley side, of grade V and conforming the safety requirements of EN 14973:2006, class C2: 1400 m steel cord conveyor belt, ISO 15236-3 - 1600 ST 5000/12 + 8 V/class C2 EXAMPLE 2 A 900 m steel cord conveyor belt (ST) of 1 400 mm width, a minimum tensile strength of 2 500 N/mm belt wi
43、dth, cover thickness of 10 mm on the carrying side and 8 mm on the pulley side, of grade V, with transverse reinforcements (breaker) in the cover thickness of the carrying and pulley sides, consisting of textile material and conforming the safety requirements of EN 14973:2006, class C1: 900 m steel
44、cord conveyor belt, ISO 15236-3 - 1400 ST 2500/10T + 8T V/class C1 EXAMPLE 3 A 1 000 m steel cord conveyor belt (ST) of 800 mm width, a minimum tensile strength of 800 N/mm belt width, cover thickness of 10 mm on the carrying side and 6 mm on the pulley side of grade V, with transverse reinforcement
45、s (weft) on the carrying and pulley sides, consisting of steel and conforming the safety requirements of EN 14973:2006, class B1: 1000 m steel cord conveyor belt, ISO 15236-3 - 800 ST S/S 800/10 + 6 V/class B1 10 Ordering data The minimum requirements of the customers are length, width, breaking str
46、ength, cover thicknesses. For purchasers placing orders with more than one manufacturer or for replacement belting, more detailed information is required for compatibility such as pitch, number of cords, and possibly cord diameter, as well as whether the belt is to be of the standard type or equippe
47、d with breaker plies or weft. Attention should be drawn to ISO 15236-2 regarding preferred types. EN ISO 15236-3:200712 11 Marking Steel cord conveyor belts shall be marked with at least the following information: a) number and year of this part of ISO 15236, i.e. “ISO 15236-3:2007”; b) name of belt
48、 manufacturer; c) year of manufacture (marking the last two digits of the year, e.g. 07 to denote 2007, is acceptable); d) belt identification number, with no more than five digits; e) nominal tensile strength, expressed in N/mm; f) thickness of the top and bottom covers, expressed in millimetres, t
49、ogether with the letter “T” for textile reinforcement or “S” for steel breaker or weft. EN ISO 15236-3:200713Annex A (informative) Helpful information to be supplied by the purchaser A.1 Applicability When ordering, belting purchasers should define their requirements by reference to Clause 10 (ordering data). A.2 Replacement belting When the belt is to be replaced on an existing conveyor, the following information should be supplied: a) details of existing belt, i.e. cord diameter, pitch, no. of cords, cover
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