SIST EN 1554:2012
(Main)Conveyor belts - Drum friction testing
Conveyor belts - Drum friction testing
This European Standard 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.
Fördergurte - Prüfung der Trommelreibung
Diese Europäische Norm legt Prüfverfahren fest, mit denen die Tendenz eines Fördergurts zum Entflammen oder zum Glimmen beurteilt werden kann, wenn er bei einer vorgegebenen Spannung in Kontakt mit einer umlaufenden Stahltrommel gehalten wird.
Methoden zur Veränderung der Spannung des Fördergurts werden beschrieben.
ANMERKUNG Für bestimmte Arten von Fördergurten lässt sich diese Prüfung möglicherweise aufgrund der Gurtkonstruktion nicht durchführen, weil die Anforderungen von 6.2.3 nicht erfüllt werden.
Courroies transporteuses - Essais de frottement au tambour
La présente Norme européenne décrit une méthode d'essai permettant de déterminer l'aptitude ou non d'une
courroie transporteuse à générer une inflammation ou une incandescence lorsque, maintenue immobile sous
une tension donnée, elle frotte suivant une demi-circonférence sur la surface du tambour tournant en acier.
Les moyens utilisés pour faire varier la tension de la courroie sont décrits.
NOTE Pour certains types de courroies, en raison de leur structure, il peut s'avérer impossible d'effectuer cet essai
du fait de l'inaptitude de la courroie à se conformer aux exigences du 6.2.3.
Naprave za kontinuirni transport - Trakovi tračnih transporterjev - Preskušanje trenja na pogonskem bobnu
Ta evropski standard opisuje preskusno metodo, s katero se ugotavlja nagnjenost traka tračnega transporterja k nastanku toplote, plamena ali žarenja, kadar se drži pri miru pod določeno napetostjo pri površinskem stiku okrog vrtečega se gnanega jeklenega bobna. Opisani so načini spreminjanja napetosti traku.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fördergurte - Prüfung der TrommelreibungCourroies transporteuses - Essais de frottement au tambourConveyor belts - Drum friction testing53.040.20Deli za transporterjeComponents for conveyorsICS:Ta slovenski standard je istoveten z:EN 1554:2012SIST EN 1554:2012en,fr,de01-oktober-2012SIST EN 1554:2012SLOVENSKI
STANDARDSIST EN 1554:19991DGRPHãþD
SIST EN 1554:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1554
June 2012 ICS 53.040.20 Supersedes EN 1554:1998English Version
Conveyor belts - Drum friction testing
Courroies transporteuses - Essais de frottement au tambour
Fördergurte - Prüfung 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 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 CEN-CENELEC 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 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, 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, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 1554:2012: ESIST EN 1554:2012
EN 1554:2012 (E) 2 Contents Page Foreword .3Introduction .41Scope .52Normative references .53Principle .54Apparatus .55Test piece .96Procedure .96.1General .96.2Procedure and test .96.2.1Number of test pieces for Method A .96.2.2Number of test pieces for Method B .96.2.3Method A - Tests in still air . 106.2.4Method B - Tests in moving air . 117Test report . 11Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 12Bibliography . 13 SIST EN 1554:2012
EN 1554:2012 (E) 3 Foreword This document (EN 1554:2012) 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 conflicting 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 document 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 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1554:2012
EN 1554:2012 (E) 4 Introduction The purpose of this European Standard is to provide a method 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 driving 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. SIST EN 1554:2012
EN 1554:2012 (E) 5 1 Scope This European Standard 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 construction, 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 references, 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 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 room 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 steel 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 moving 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 is 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 necessary. 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. SIST EN 1554:2012
EN 1554:2012 (E) 6 Notwithstanding the dimensions and tolerances on drum diameter 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
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