1、October 2012 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 53.040.20!$A“1919730www.din.deDDIN EN 1554Conveyor belts Drum friction testing;English version EN 1554:2012,English translation of DIN EN 1554:2012-10Frdergurte Prfung der Trommelreibung;Englische Fassung EN 1554:2012,Englische bersetzung von DIN EN 1554:2012-10Courroies transporteuses Essais de fr
3、ottement au tambour;Version anglaise EN 1554:2012,Traduction anglaise de DIN EN 1554:2012-10SupersedesDIN EN 1554:1999-01www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 15 pages 09.12 DIN EN 1554:2012-10 2 A comma is used as the decimal
4、 marker. National foreword This document has been prepared by Technical Committee CEN/TC 188 “Conveyor belts” (Secretariat: SNV, Switzerland). The responsible German body involved in its preparation was the Normenausschuss Kautschuktechnik (Rubber Technology Standards Committee), Working Committee N
5、A 045-02-05 AA Frdergurte. This standard contains specifications meeting the essential requirements set out in Annex I of the Machinery Directive, Directive 2006/42/EC, and which apply to machines that are either first placed on the market or commissioned within the EEA. This standard serves to faci
6、litate proof of compliance with the essential requirements of the directive. Once this standard is cited in the Official Journal of the European Union, it is deemed a “harmonized” standard and thus, a manufacturer applying this standard may assume compliance with the requirements of the Machinery Di
7、rective (“presumption of conformity”). For the International Standards referred to in this document there are no national standards available. Amendments This standard differs from DIN EN 1554:1999-01 as follows: a) the standard has been revised in form and substance; b) Clause 2 “Normative referenc
8、es” has been revised; c) Annex ZA “Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC” has been included. Previous editions DIN EN 1554: 1999-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1554 June 2012 ICS 53.040.20 Supersedes EN 1554:199
9、8English Version Conveyor belts - Drum friction testing Courroies transporteuses - Essais de frottement au tambour Frdergurte - Prfung der Trommelreibung This European Standard was approved by CEN on 4 May 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat
10、e 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 CEN-CENELEC Management Centre or to any CEN member. This European Stan
11、dard 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the nat
12、ional standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Switze
13、rland, Turkey and United Kingdom. EUROPEAN 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. Re
14、f. No. EN 1554:2012: EEN 1554:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Principle 54 Apparatus .55 Test piece .96 Procedure .96.1 General 96.2 Procedure and test 96.2.1 Number of test pieces for Method A 96.2.2 Number of test pieces for Method B 96.2.3 Meth
15、od A - Tests in still air 106.2.4 Method B - Tests in moving air . 117 Test report . 11Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 12Bibliography . 13DIN EN 1554:2012-10 EN 1554:2012 (E) 3 Foreword This document (EN 1
16、554:2012) has been prepared by Technical Committee CEN/TC 188 “Conveyor belts”, 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 December 2012, and conflict
17、ing national standards shall be withdrawn at the latest by December 2012. Attention 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 documen
18、t supersedes EN 1554:1998. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive. For relationship with EU Directive, see informative Annex ZA, which is an integral part of
19、this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, I
20、celand, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 1554:2012-10 EN 1554:2012 (E) 4 Introduction The purpose of this European Standard is to provide a metho
21、d of test that will assist conveyor belt users in assessing the degree of risk which can be anticipated from the hazard caused when a conveyor belt stalls and the driving mechanism of the conveying system continues to operate, causing localized heating of the conveyor belt through contact with the d
22、riving drum or other frictional heat source. For recommendations concerning safety categories of conveyor belts, reference should be made to EN 12882 and EN 14973. This document is a type C standard as stated in EN ISO 12100:2010. DIN EN 1554:2012-10 EN 1554:2012 (E) 5 1 Scope This European Standard
23、 describes a method of test to determine the propensity of a conveyor belt to generate heat flame or glow when held stationary under a given tension, in surface contact around a rotating driven steel drum. Means of varying the belt tension are described. NOTE For certain belt types, due to their con
24、struction, it may not be possible to conduct this test due to the inability of the belt to comply with the requirements of 6.2.3. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated refe
25、rences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10083-1:2006, Steels for quenching and tempering Part 1: General technical delivery conditions EN 60584-1, Thermocouples Part 1: Reference tables (IEC
26、60584-1) EN ISO 13850, Safety of machinery Emergency stop Principles for design (ISO 13850) ISO 65:1981, Carbon steel tubes suitable for screwing in accordance with ISO 7-1 ISO 9329-1, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Unalloyed steels with specified ro
27、om temperature properties ISO 9330-1, Welded steel tubes for pressure purposes Technical delivery conditions Part 1: Unalloyed steel tubes with specified room temperatures properties 3 Principle A test piece of conveyor belt, suitably mounted and tensioned, is wrapped half way around a rotating stee
28、l drum, simulating a stalled belt. The test is continued at specified tensions for a given time period, or until the belt breaks. The presence, or absence, of flame or glow is noted and reported and the maximum temperature of the drive drum is recorded. The test is conducted in still air or/and in m
29、oving air. 4 Apparatus A general arrangement of a drum friction testing apparatus is shown in Figure 1. 4.1 Steel drum of external diameter (210 1) mm mounted on a horizontal axis and capable of being rotated under all load conditions at (200 5) rpm throughout the test. The outer shell of the drum i
30、s manufactured from tube complying with ISO 9329-1 or ISO 9330-1. The drum shaft material is of grade 2 C 22 of EN 10083-1:2006. NOTE Experience has shown that motors of between 7,5 kW and 15 kW have proved suitable for maintaining these conditions, although for smaller motors a soft start may be ne
31、cessary. Basic dimensions of the drum, shown in Figure 2, are given in order to standardize its thermal characteristics. The variation in diameter along the length of the drum shall not exceed 1 mm. DIN EN 1554:2012-10 EN 1554:2012 (E) 6 Notwithstanding the dimensions and tolerances on drum diameter
32、 and shell thickness shown in Figure 2, the effect of wear down to a minimum shell thickness of 6 mm is permissible, but the overall diameter of the drum must not thereby become less than 209 mm. 4.2 Drum temperature recording device, comprising a mineral-insulated stainless steel sheathed thermocou
33、ple having a maximum outside diameter of 2 mm and complying with EN 60584-1. The tip of the thermocouple is set not more than 0,5 mm below the surface of the drum, midway along its length. NOTE 1 More than one thermocouple may be fitted in order to provide back-up in the event of failure. NOTE 2 Tak
34、e care to see that the effective cold junction temperature is compensated for or alternatively, is measured, and the appropriate correction made. NOTE 3 The functioning of the rotating contacts should be checked periodically by observing that there is no change in the recorded temperature when the a
35、pparatus is run without a test piece. DIN EN 1554:2012-10 EN 1554:2012 (E) 7 Dimensions in millimetres Key 1 Guide pulley 2 Perforated air supply pipe 3 Anemometer 4 Test piece 5 Fume extraction hood Figure 1 Schematic arrangement of drum friction apparatus DIN EN 1554:2012-10 EN 1554:2012 (E) 8 Dim
36、ensions in millimetres Key 1 Temperature probe 2 Outer shell manufactured from tube to ISO 9329-1 or ISO 9330-1 3 Shaft material grade 2 C 22 EN 10083-1:2006 4 6,375 0,375 shell thickness Figure 2 Cross section of steel drum and thermocouple housing for drum friction test DIN EN 1554:2012-10 EN 1554
37、:2012 (E) 9 4.3 Tensioning system, capable of applying the incremental tensions specified in 6.2.3. 4.4 Air current, having a velocity of (2,0 0,1) m/s at a distance of 200 mm from the surface of the horizontal steel drum when the sample of belt is in position ready for a test. The air supplied to t
38、he apparatus shall be at normal ambient temperature, but tests shall not be made in air at a temperature of less than 5 C. The air current shall be supplied from a pipe complying with DN 10 of ISO 65:1981 with 36 holes, each nominally 1,5 mm diameter at 10 mm pitch. The distance between the centre l
39、ine of the perforated pipe and the steel drum is 600 mm as shown in Figure 1. 4.5 Anemometer, positioned 200 mm from the surface of the drum on the same horizontal plane as the perforated pipe and capable of measuring the velocity of the air current to an accuracy of 5 %. The speed of the air curren
40、t in the extractor system provided shall be the minimum required and just sufficient to remove the fumes from the vicinity of the apparatus under the specified test conditions. 4.6 Emergency stop devices, complying with EN ISO 13850. 5 Test piece Cut each test piece from a position not less than 50
41、mm from the edges of the belt and not less than 100 mm from the end of the belt. Each test piece shall be 150 mm wide and not less than 750 mm long, from positions parallel to the longitudinal direction of the conveyor belt. NOTE The precise length of the test piece will be dependent upon the detail
42、s of the tensioning system (4.3). See Figure 1. 6 Procedure 6.1 General SAFETY WARNING Before commencement of the test it should be verified that emergency stop devices (4.6) are functioning correctly and that all the necessary precautions have been taken to ensure the safety of the operatives condu
43、cting the test and that they are not exposed to fumes. Thoroughly clean the surface of the steel drum to remove all traces of rust or residual debris, using abrasive paper or cloth. Ensure that the temperature of the drum does not exceed 30C at the start of any test. 6.2 Procedure and test 6.2.1 Num
44、ber of test pieces for Method A Select four test pieces in accordance with Clause 5. 6.2.2 Number of test pieces for Method B Select four test pieces in accordance with Clause 5. DIN EN 1554:2012-10 EN 1554:2012 (E) 10 6.2.3 Method A - Tests in still air 6.2.3.1 General Conduct the procedures in 6.2
45、.3.2 or 6.2.3.3, as specified in the product or safety specification. Conduct two tests with the carrying side of the belt in contact with the steel drum (4.1) and two tests with the reverse side of the belt in contact with the steel drum. 6.2.3.2 Method A1 - Test in still air with fixed end load Pa
46、ss the test piece through an arc of 180 around the steel drum ensuring the belt is in contact with the drum throughout the 180 . Ensure that one end is rigidly secured and the other end attached to the tensioning system as shown in Figure 1. Apply a force of 343 N. Rotate the drum at (200 5) rpm in
47、a direction away from the rigidly secured end of the test piece (i.e. similar to the forward direction of a conveyor drive). Maintain the force of 343 N for 60 min or until the test piece breaks. Record the maximum surface temperature of the drum during the test. Examine the test piece for any flame
48、 or glowing during and after the test. If after 60 min the belt is unbroken, remove the belt from the drum and examine in subdued light the surface of the belt which has been in contact with the drum, for any sign of glow. 6.2.3.3 Method A2 - Test in still air with increasing end load Pass the test piece through an arc of 180 around the steel drum ensuring that the belt is in contact with the drum throughout the 180 . Ensure that one end is rigidl
