DIN EN 818-7-2008 Short link chain for lifting purposes - Safety - Part 7 Fine tolerance hoist chain Grade T (Types T DAT and DT)(includes Amendment A1 2008) Ge.pdf

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1、 y!“ # # $ % # 88-+:2*8-*+ (enthltnderungA1:2008) +:; !zk G$k($ ) Documentcomprises37pagesDIN EN 818-7:2008-07 2 Start of validity This standard is valid from 1 July 2008. National foreword accessories Safety” (Secretariat: BSI, United Kingdom). For further information about the Normenausschuss Rund

2、stahlketten (NRK), please refer to www.nrk.din.de. This standard includes Amendment A1:2008 to EN 818-7:2002 and concretizes the basic requirements set out in Annex I of the EU Machinery Directive 98/37/EC (valid until 28 December 2009) and the new EU Machinery Directive 2006/42/EC which becomes app

3、licable on 29 December 2009 relating to machinery to be placed on the EEA market, with the intent of simplifying the means of proving conformity with such requirements. Once this standard is designated a harmonized standard in the Official Journal of the European Union, a manufacturer applying this

4、standard may assume compliance with the requirements of the Machinery Directive (the so-called “presumption of conformity”). DIN EN 818 consists of the following parts, under the general title Short link chain for lifting purposes Safety: Part 1: General conditions of acceptance Part 2: Medium toler

5、ance chain for chain slings Grade 8 Part 3: Medium tolerance chain for chain slings Grade 4 Part 4: Chain slings Grade 8 Part 5: Chain slings Grade 4 Part 6: Chain slings Specification for information for use and maintenance to be provided by the manufacturer Part 7: Fine tolerance hoist chain, Grad

6、e T (Types T, DAT and DT) Amendments This standard differs from DIN EN 818-7:2002-09 as follows: a) Annex ZA (informative) “Relationship between this European Standard and the Essential Requirements of EU Directive 98/37” has been added. b) Annex ZB (informative) “Relationship between this European

7、Standard and the Essential Requirements of EU Directive 2006/42/EC” has been added. Previous editions DIN 5684: 1954-05 DIN 5684-3: 1972-06, 1984-05 DIN EN 818-7: 2002-09 Steel Link Chains Standards Committee), Technical Committee NA 085-00-04 AA Hebezeug . The responsible German body involved in it

8、s preparation was the Normenausschuss Rundstahlketten (Round ketten This standard has been prepared by Technical Committee CEN/TC 168 “Chains, ropes, webbing, slings and This standard includes safety requirements in clause 5. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 818-7:2002+A1 April 2

9、008 ICS 53.020.30 Supersedes EN 818-7:200 English Version Short link chain for lifting purposes - Safety - Part 7: Fine tolerance hoist chain, Grade T (Types T, DAT and DT) Chanes de levage maillons courts - Scurit - Partie 7: Chanes de tolrance serre pour les palans, Classe T (Types T, DAT et DT) T

10、eil 7: Feintolerierte Hebezeugketten - Gteklasse T (Ausfhrung T, DAT und DT) This European Standard was approved by CEN on 8 November 2001 and includes Amendment 1 approved by CEN on 14 February 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condi

11、tions 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 Management Centre or to any CEN member. This European Standard exists in thre

12、e 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of A

13、ustria, 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. EUROPEAN CO

14、MMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN for CEN national Members. Kurzgliedrige Rundstahlketten fr Hebezwecke - Sicherheit - Ref. No. EN 818-7:2002+A1:2008: E All rights of exploitation

15、in any form and by any means reserved worldwideContents Foreword.3 Introduction 4 1 Scope4 2 Normative references .5 3 Terms and definitions.5 4 Hazards 6 5 Safety requirements7 6 Verification of safety requirements.14 7 Marking 18 8 Manufacturers certificate 18 9 Information for use and assembly of

16、 the hoist chain into the hoist18 Annex A (normative) Calculation of dimensions, working load limits and mechanical properties.20 Annex B (normative) Selection criteria for fine tolerance chain for power driven hoists. Types T, DAT and DT22 Annex C (informative) Designation system for hoist chain -

17、grade T 30 Annex D (informative) Approximate mass of Grade T hoist chain.31 Annex E (informative) Chain use 32 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC 33 Annex ZB (informative) !Relationship between this European Sta

18、ndard and the Essential Requirements of EU Directive 2006/42/EC 34 Bibliography35 DINEN8187:200807 EN8187:2002+A1:2008(E) 2 Page Foreword This document (EN 818-7:2002+A1:2008) has been prepared by Technical Committee CEN/TC 168 “Chains, ropes, webbings, slings and accessories“, the secretariat of wh

19、ich is held by BSI. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2008 and conflicting national standards shall be withdrawn at the latest by October 2008. This document includes Amendment 1, app

20、roved by CEN on 2008-02-14. This document supersedes EN 818-7:2002. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, a

21、nd supports essential requirements of EC Directive(s). For relationship with EC Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document. The other parts of EN 818 are: Part 1: General conditions of acceptance Part 2: Medium tolerance chain for chain slings - Grade

22、8 Part 3: Medium tolerance chain for chain slings - Grade 4 Part 4: Chain slings - Grade 8 Part 5: Chain slings - Grade 4 Part 6: Chain slings - Specification for information for use and maintenance to be provided by the manufacturer. The annexes A and B are normative. The annexes C, D, E, ZA and ZB

23、 are informative. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland

24、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 3 DINEN8187:200807 EN8187:2002+A1:2008(E) Introduction This European Standard has been prepared to be a harmonized standard to pr

25、ovide one means of conforming with the essential safety requirements of the Machinery Directive and associated EFTA regulations. These chains are intended for use in serial hoists. The multiple pitch is fine toleranced. The extent to which hazards are covered is indicated in the scope of this Europe

26、an Standard. In addition, lifting equipment should conform as appropriate to EN 292 for hazards which are not covered by this standard. Annex A is normative and gives the bases for the calculation of the dimensions and the mechanical properties of hoist chains. Annex B is normative and gives selecti

27、on criteria for the nominal size of hoist chains, Grade T, types T, DAT and DT for serial hoists. Annex C is informative and gives a designation system for recording the identifying features of fine tolerance short link chain Grade T. Since this system is not widely used it has been included in this

28、 first edition of this standard as an informative annex; however, should its use become more generally accepted then the status of the information would need to be reviewed. 1 Scope This European Standard specifies the requirements related to safety for hoist chain, Grade T (type T quenched and temp

29、ered and types DAT and DT case hardened), for use in serial chain hoists manual and power driven. Type DAT and type DT hoist chains possess surface hardnesses greater than core hardness and are used for power driven chain hoists to offer greater resistance to wear. Type DT hoist chain differs from D

30、AT hoist chain in having higher surface hardness and/or greater case depth to optimise wear resistance. The standard is applicable to electrically welded round steel short link hoist chains conforming to EN 818-1. The range of nominal size of hoist chains covered by this European Standard is from 4

31、mm to 22 mm. The hazards covered by this European Standard are identified in clause 4. 4 EN8187:2002+A1:2008(E) DINEN8187:2008072 Normative references This European Standard incorporates, by dated or undated reference provisions from other publications. These normative references are cited at the ap

32、propriate 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 amendment or revision. For undated references, the latest edition of the p

33、ublication referred to applies (including amendments). EN 292-1:1991, Safety of machinery Basic concepts General principles for design Part 1: Basic terminology, methodology. EN 292-2:1991/A1:1995, Safety of machinery Basic concepts General principles for design Part 2: Technical principles and spec

34、ifications. EN 818-1:1996, Short link chain for lifting purposes Safety Part 1: General conditions of acceptance. EN 1050:1996, Safety of machinery Principles for risk assessment. EN ISO 7500-1, Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testi

35、ng machines (ISO 7500-1:1999). EN 10025, Hot rolled products of non-alloy structural steels; technical delivery conditions (includes amendment A1:1993). ISO 643, Steels Micrographic determination of the ferritic or austenitic grain size. ISO 4301-1, Cranes and lifting appliances Classification Part

36、1: General. ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method. ISO 4965, Axial load fatigue testing machines - Dynamic force calibration - Strain gauge technique. 3 Terms and definitions For the purposes of this European Standard the terms, definitions and symbols given in EN

37、818-1 apply. 5 DINEN8187:200807 EN8187:2002+A1:2008(E)4 Hazards The release of a load due to failure of hoist chain puts at risk either directly or indirectly the safety or health of those persons within the danger zone of lifting equipment. In order to provide the necessary strength and durability

38、of hoist chain, this European Standard lays down requirements for the design, selection of materials of construction and testing to ensure that specified levels of performance are met. Fatigue failure has not been identified as a hazard for type T chain when hoist chain selected according to annex B

39、 and having the specified levels of performance and design given in this European Standard is used in serial hoists. Fatigue failure has been identified as a hazard for hoist chains types DAT and DT used in power driven hoists. Therefore this European Standard specifies levels of design and performa

40、nce, with particular reference to fatigue resistance. Since failure can be caused by the incorrect choice of grades and specification of lifting hoist chain this European Standard also gives the requirements for marking and the manufacturers certificate. Dimensional incompatibility between the hoist

41、 chain and mating parts of the hoist (chain wheel, chain guide and loading device) may lead to premature failure and this European Standard contains dimensional requirements for correct assembly and fit. Table 1 lists those hazards, which require action to reduce risk identified by risk assessment a

42、s being specific and significant for hoist chain of Grade T Types T, DAT, DT. Table 1 Hazards and associated requirements Hazards identified in annex A of EN 1050:1996 Relevant clause of annex A of EN 292-2:1991/A1:1995 Relevant clause/subclause of this standard 1.e Mechanical hazard due to 1.3.2 5

43、inadequacy of strength 4.1.2.3 4.1.2.4 4.2.4 6 1.7.3 4.3.1 7 1.5 (Types DAT, DT only) - 5.5.6 Fatigue failure and 6.2.7 6 EN8187:2002+A1:2008(E) DINEN8187:2008075 Safety requirements 5.1 General The hoist chains shall conform to the requirements of EN 818-1. 5.2 Dimensions 5.2.1 General A selection

44、of nominal sizes and dimensions is given in 5.2.2 and 5.2.4. Other nominal sizes may be used, provided that nominal sizes shall not exceed the range specified in 5.2.2 and that the dimensions and tolerances are calculated in accordance with annex A. Whilst the nominal link pitch p nis based upon 3 d

45、 n(where d nis the nominal size of the hoist chains) this may be varied but shall not exceed the limits 2,6 d nto 3,2 d n . The nominal link pitch p nshall be subject to the tolerances specified in annex A. NOTE Compatibility between the hoist chain and the mating parts of the hoist requires agreeme

46、nt on the nominal size and dimensions and on the distribution of tolerances between the chain manufacturer and the hoist manufacturer. 5.2.2 Nominal size d nThe nominal size shall not be below 4 mm or above 22 mm, a selection of nominal sizes is listed in Table 2. 5.2.3 Tolerances on material diamet

47、er The tolerances on material diameter for the selected nominal sizes shall be as listed in Table 2. These and all other nominal size material diameter tolerances shall be calculated in accordance with A.1. 5.2.4 Pitch and widths The dimensions and tolerances of the 3 d npitch and the width for the

48、selected nominal sizes shall be as listed in Table 2. The dimensions and tolerances of the pitch and width shall be calculated in accordance with A.1. These dimensions and tolerances and all other nominal size and pitch ranges and tolerances of multiple pitch lengths, shall be calculated in accordance with A.1. The tolerances of multiple pitch lengths shall be calculated in accordance with A.1. 7 DINEN8187:200807 EN8187:2002+A1:2008(E) Table 2 Selected dimensions Dimensions in millimetres Pitch Width Gauge length of Weld