DIN EN 1677-3-2008 Components for slings - Safety - Part 3 Forged steel self-locking hooks Grade 8(includes Amendment A1 2008) English version of DIN EN 1677-3 .pdf

1、 b! “ “ # $%$ Documentcomprises19pagesDIN EN 1677-3:2008-06 2 Start of validity This standard is valid from 01 June 2008. National foreword This standard has been prepared by CEN/TC 168 “Chains, ropes, webbing, slings and accessories Safety” (Secretariat: BSI, United Kingdom). The responsible German

2、 body involved in its preparation was the Normenausschuss Rundstahlketten (Round Steel Link Chains Standards Committee), Technical Committee 3 Anschlagketten und Zubehr. For further information, please refer to www.nrk.din.de. This standard includes Amendment A1:2008 to European Standard EN 1677-3:2

3、001 and concretizes the 29 December 2009 relating to machines 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 ap

4、plying this standard may assume compliance with the requirements of the Machinery Directive (the so-called “presumption of conformity”). This standard includes safety requirements in clause 5. This European Standard is part of a series of standards relating to safety for components for slings. The s

5、eries includes the following parts: Part 1: Forged steel components Grade 8 Part 2: Forged steel lifting hooks with latch Grade 8 Part 3: Forged steel self-locking hooks Grade 8 Part 4: Links Grade 8 Part 5: Forged steel lifting hooks with latch Grade 4 Part 6: Links Grade 4 Amendments This standard

6、 differs from DIN EN 1677-3:2002-01 as follows: a) A new Annex ZA (informative) “Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC” has been added. b) Annex ZB (informative) “Relationship between this European Standard and the Essential Requirements

7、of EU Directive 2006/42/EC” has been included. Previous editions DIN EN 1677-3: 2002-01 basic requirements set out in Annex I of the EU Machinery Directive (Directive 98/37/EC) (valid until 28 December 2009) and the new EU Machinery Directive 2006/42/EC which becomes applicable on EUROPEAN STANDARD

8、NORME EUROPENNE EUROPISCHE NORM EN 1677-3:2001+A1 April 2008 ICS 53.020.30 Supersedes EN 1677-3:2001 English Version Components for slings - Safety - Part 3: Forged steel self- locking hooks - Grade 8 Accessoires pour lingues - Scurit - Partie 3: Crochets autobloquants en acier forg - Classe 8 Einze

9、lteile fr Anschlagmittel - Sicherheit - Teil 3: Geschmiedete, selbstverriegelnde Haken - Gteklasse 8 This European Standard was approved by CEN on 11 August 2001 and includes Amendment 1 approved by CEN on 21 February 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations wh

10、ich 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 Management Centre or to any CEN member. This European

11、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 Management Centre has the same status as the official versions. CEN members are the nationa

12、l standards 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 Uni

13、ted Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1677-3:20

14、01+A1:2008: EEN 1677-3:2001+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Significant Hazards5 5 Safety requirements 6 5.1 Design .6 5.2 Dimensions.6 5.3 Materials and heat treatment8 5.4 Manufacturing methods and workmanship 8

15、5.5 Mechanical properties.9 6 Verification of safety requirements9 6.1 Qualification of personnel 9 6.2 Type tests .9 6.3 Manufacturing test regime and acceptance criteria.11 7 Marking .12 8 Manufacturers certificate .12 9 Information for use 12 Annex A (informative) Bases for the calculation of hoo

16、k dimensions 13 Annex B (informative) Designation system for self-locking hooks - grade 8 .14 B.1 Designation 14 B.2 General format .14 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC 15 Annex ZB (informative) !Relationship

17、between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 16 Bibliography 17 DINEN16773:200806EN 1677-3:2001+A1:2008 (E) 3 Foreword This document (EN 1677-3:2001+A1:2008) has been prepared by Technical Committee CEN/TC 168 “Chains, ropes, webbing, slings and accessorie

18、s - Safety”, the secretariat of which is held by BSI. 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 October 2008, and conflicting national standards shall be withdrawn at the latest by October 2

19、008. This document includes Amendment 1, approved by CEN on 2008-02-21. This document supersedes EN 1677-3:2001. 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 Commissi

20、on and the European Free Trade Association, and supports essential requirements of EC Directive(s). For the relationship with EC Directives, see informative Annexes ZA and ZB, which are integral parts of this document. This European Standard is a part of a products standard related to safety for com

21、ponents for slings. The other Parts of EN 1677 for components for slings are: Part 1: Forged steel components - Grade 8 Part 2: Forged steel lifting hooks with latch - Grade 8 Part 4: Links - Grade 8 Part 5: Forged steel lifting hooks with latch - Grade 4 Part 6: Links - Grade 4 Annexes A and B of t

22、his European Standard 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, Gre

23、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DINEN16773:200806EN 1677-3:2001+A1:2008 (E) 4 Introduction This European Standard has been prepared to be a

24、harmonized standard providing one means of complying with the essential safety requirements of the Machinery Directive and associated EFTA regulations. The hooks covered by this Part of EN 1677 are normally supplied to be part of a sling, but they may also be used for other applications. In such ins

25、tances it is important that the hook design is checked to ensure its fitness for the intended use. The extent to which hazards are covered is indicated in the scope. In addition, lifting equipment shall conform as appropriate to EN 292 for hazards that are not covered by this standard. 1 Scope This

26、European Standard specifies requirements for forged steel self-locking lifting hooks of Grade 8 having eye or clevis and pin up to 21,2 t working load limit (WLL), mainly for use in: chain slings according to EN 818-4 steel wire rope slings according to prEN 13414-1 textile slings according to EN 14

27、92-1, EN 1492-2 intended for lifting objects, materials or goods. The hazards covered by this part of EN 1677 are identified in clause 4. Annex A gives the bases for calculation of hook dimensions. Annex B gives an example of a designation systems for hooks of Grade 8. 2 Normative references This Eu

28、ropean Standard incorporates by dated or undated reference 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 publication

29、s apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 292-2:1991/A1:1995, Safety of machinery - Basic concepts, general principles for design - Part 2: Techn

30、ical principles and specifications (Amendment 1:1995) EN 818-4, Short link chain for lifting purposes - Safety - Part 4: Chain slings - Grade 8 EN 818-6, Short link chain for lifting purposes - Safety - Part 6: Chain slings - Specification for information for use and maintenance to be provided by th

31、e manufacturer EN 1050:1996, Safety of machinery - Principles for risk assessment EN 1492-1, Textile slings - Safety - Part 1: Flat woven webbing slings, made of man-made fibres, for general purpose use DINEN16773:200806EN 1677-3:2001+A1:2008 (E) 5 EN 1492-2, Textile slings - Safety - Part 2: Rounds

32、lings, made of man-made fibres, for general purpose use !EN 1677-1:2000+A1:2008“, Components for slings - Safety - Part 1: Forged steel components, Grade 8 prEN 13414-1, Steel wire rope slings - Safety - Part 1: Wire rope slings 3 Terms and definitions For the purposes of this European Standard, the

33、 terms and definitions given in !EN 1677-1+A1:2008“ apply, together with the following. 3.1 self-locking hook hook containing a locking mechanism, capable of being activated by the action of the load which, once correctly closed and locked, can only be opened in the unloaded condition by de-activati

34、on of the locking mechanism 4 Significant Hazards Accidental release of a load or release of a load due to failure of a hook puts at risk, either directly or indirectly, the safety or health of those persons within the danger zone. In order to provide the necessary strength and durability of hooks t

35、his Part of EN 1677 gives requirements for the design, manufacture and testing to ensure the specified levels of performance are met. Since failure can be caused by the incorrect choice of grade and specification of hook, this Part of EN 1677 also gives requirements for marking and the manufacturers

36、 certificate. Errors of fitting can also lead to failure and this Part of EN 1677 contains dimensional requirements to allow correct fit. Risk of injury due to sharp edges, sharp angles or rough surfaces when handling is also covered by this standard. Those aspects of safe use associated with good p

37、ractice are given in EN 818-6. Table 1 contains those hazards which require action to reduce risk identified by risk assessment as being specific and significant for forged steel self-locking hooks of grade 8. Table 1 Significant hazards and associated requirements Hazards identified in accordance w

38、ith annex A of EN 1050:1996 Relevant clause of annex A of EN 292-2: 1991/A1:1995 Relevant clause / subclause of this Part of EN 1677 1.e Mechanical hazard 1.3.2 5 due to inadequacy of 4.1.2.3 5 strength 4.1.2.5 5 4.2.4 5 1.7.3 7 1.3 Cutting hazard 1.3.4 5.4 1.8 Friction or abrasion 1.3.4 5.4 15 Erro

39、rs of fitting hazard 1.5.4 5.2 DINEN16773:200806EN 1677-3:2001+A1:2008 (E) 6 5 Safety requirements 5.1 Design The articulation and relative movement shall be in accordance with 5.1 of !EN 1677-1:2000+A1:2008“. NOTE 1 The form of the hook is not specified in detail. For example, a minimum value of di

40、mension F (see Figure 1) as measured in any direction is specified so that the eye of the hook can accommodate a pin, but the eye of the hook need not be circular. The form of the upper end shall be either of the eye type or the clevis type as designated in Table 2. A closed hook in the finished con

41、dition shall be able to withstand a bend test in accordance with 6.2.2 (see Figure 2). The latch shall be able to withstand a force f 1 , of 3000 N or equivalent to 20 % of the working load limit of the hook, whichever is the greater, when applied equidistant between the point of the hook and the ce

42、ntre of rotation of the latch (see Figure 3). The latch, when the hook is correctly closed and locked, shall be able to withstand a force f 2 , applied laterally to f 1 , as close as practicable to the tip of the latch, of 3000 N or equivalent to 10 % of the working load limit, whichever is the grea

43、ter. The locking mechanism shall be activated by the application of the load and shall be replaceable. The hook shall be able to withstand an impact to the eye or clevis of the latch, without opening, when tested in accordance with 6.2.4. The forces transmitted between the lock and the latch shall n

44、ot be such that an impact on the latch causes a moment in the direction of rotation that opens the lock. The surface hardness of the lock shall be greater than that of the latch. NOTE 2 The hook should be easy to handle and operate. NOTE 3 The locking mechanism should be protected against ingress an

45、d entrapment of dust or other solids. 5.2 Dimensions The principal dimensions of the hook shall conform to Table 3, in which the hook dimensions are related to the working load limit. NOTE 1 With an eye type hook, connecting devices can be required. NOTE 2 For direct use in wire rope slings and/or t

46、extile slings, dimension F should be larger than the minimum value given in Table 3. In addition, the following requirements shall be met: a) the actual throat opening O is the smaller of O 1and O 2b) the actual point height B shall be at least 65 % of the actual throat opening O (see Figure 1); c)

47、the actual throat opening O (see Figure 1) shall not exceed 95 % of the actual seat diameter D; d) in the case of hooks having a clevis, the dimensions of the load pin and the slot on the clevis shall ensure articulation between pin and the chain; e) the hook shall be able to close over the maximum

48、diameter of bar A, as indicated in Figure 1, that can be admitted through the actual throat opening O; DINEN16773:200806EN 1677-3:2001+A1:2008 (E) 7 f) the maximum values for H and L given in Table 3 shall not apply in the region of the locking mechanism. Table 2 Forms of hooks Form Description Prin

49、cipal use E Eye type Chain slings, wire rope slings and textile slings C Clevis type Mechanically assembled chain slings Key 1 Eye type 2 Clevis type 3 Load bearing pivot pin 4 Example of locking mechanism 5 Latch 6 Maximum diameter of bar Figure 1 Dimensions of self-locking hooks DINEN16773:200806EN 1677-3:2001+A1:2008 (E) 8 Table 3 Dimensions of hooks (