1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1677-2:2000 ICS 53.
2、020.30; 77.140.85 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Components for slings Safety Part 2: Forged steel lifting hooks with latch, Grade 8 +A1:2008National foreword This British Standard is the UK implementation of EN 1677-2:2000+A1:2008. It supersedes BS EN 1677-2:
3、2000, which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its prepara
4、tion was entrusted to Technical Committee MHE/1, Chains and fittings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appl
5、ication. Compliance with a British Standard cannot confer immunity from legal obligations. BS EN 1677-2:2000+A1:2008 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect
6、 on 15 October 2000 BSI 2009 Amendments/corrigenda issued since publication Date Comments 30 September 2009 Implementation of CEN amendment A1:2008 ISBN 978 0 580 60268 9 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1677-2:2000+A1 April 2008 ICS 53.020.30 Supersedes EN 1677-2:2000 English Ve
7、rsion Components for slings - Safety - Part 2: Forged steel lifting hooks with latch, Grade 8 Accessoires pour lingues - Scurit - Partie 2: Crochets de levage en acier forg linguet, Classe 8 Einzelteile fr Anschlagmittel - Sicherheit - Teil 2: Geschmiedete Haken mit Sicherungsklappe, Gteklasse 8 Thi
8、s European Standard was approved by CEN on 21 May 2000 and includes Amendment 1 approved by CEN on 21 February 2008. 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 an
9、y 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 three official versions (English, French, German). A version in any other language made
10、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 Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France
11、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR N
12、ORMUNG 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 1677-2:2000+A1:2008: EEN 1677-2:2000+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative ref
13、erences 4 3 Terms and definitions .5 4 Hazards .5 5 Safety requirements 6 5.1 Design .6 5.2 Dimensions.6 5.3 Materials and heat treatment9 5.4 Manufacturing methods and workmanship 9 5.5 Mechanical properties.9 5.6 Hook latches.10 6 Verification of safety requirements11 6.1 Qualification of personne
14、l 11 6.2 Type tests .11 6.3 Manufacturing test regime and acceptance criteria.11 6.4 Hook latches.11 7 Marking .12 8 Manufacturers certificate .12 9 Instructions for use .12 Annex A (informative) Bases for the calculation of hook dimensions 13 Annex B (informative) Designation system for hooks - Gra
15、de 814 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 between this European Standard and the Essential Requirements of EU Directive 2006/42/E
16、C 16 BS EN 1677-2:2000+A1:2008EN 1677-2:2000+A1:2008 (E) 3 Foreword This document (EN 1677-2:2000+A1:2008) has been prepared by Technical Committee CEN/TC 168 “Chains, ropes, webbing, slings and accessories - Safety”, the secretariat of which is held by BSI. This European Standard shall be given the
17、 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, approved by CEN on 2008-02-21. This document supersede
18、s EN 1677-2:2000. 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, and supports essential requirements of EU Directive
19、(s). For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document. The other Parts of EN 1677 for components for slings are: Part 1: Forged steel components - Grade 8 Part 3: Forged steel self-locking hooks - Grade 8 Part 4: Links - Grade 8 Part
20、 5: Forged steel lifting hooks with latch - Grade 4 Part 6: Links - Grade 4 Annexes A and B of this 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: Aus
21、tria, 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. BS EN 1677-2
22、:2000+A1:2008EN 1677-2:2000+A1:2008 (E) 4 Introduction This European Standard has been prepared to be a 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 ar
23、e normally supplied to be part of a sling, but they may also be used for other applications. In such instances 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
24、 shall conform as appropriate to EN 292 for hazards that are not covered by this standard. 1 Scope This Part of EN 1677 specifies requirements for forged steel lifting hooks with latch of grade 8 having eye or clevis and pin up to 63 t WLL, mainly for use in: chain slings according to EN 818-4 steel
25、 wire rope slings according to prEN 13414-1:1999 textile slings according to prEN 1492-1:2000, prEN 1492-2:2000 intended for lifting objects, materials or goods. This Part of EN 1677 does not apply to hand forged hooks. The hazards covered by this Part of EN 1677 are identified in clause 4. Annex A
26、is informative, and gives the bases for calculation of hook dimensions. Annex B is informative, and gives an example of a designation system for hooks of grade 8. !Annexes ZA and ZB give“ the relationship with EU-Directives. 2 Normative references This European Standard incorporates, by dated or und
27、ated reference, provisions from other publications. These normative references are cited at appropriate 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 inc
28、orporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 292-1, Safety of machinery - Basic concepts - General principles for design - Part 1: Basic terminology, methodology EN 292-2:1991/A1:1995, Safety of machinery - Basic conce
29、pts - General principles for design - Part 2: Technical principles and specifications (Amendment 1: 1995) EN 818-4, Short-link chain for lifting purposes Safety - Part 4: Chain slings Grade 8 BS EN 1677-2:2000+A1:2008EN 1677-2:2000+A1:2008 (E) 5 EN 818-6:2000, Short link chain for lifting purposes -
30、 Safety - Part 6: Chain slings - Specification for information for use and maintenance to be provided by the manufacturer EN 1050:1996, Safety of machinery - Principles of risk assessment !EN 1677-1:2000+A1:2008“, Components for slings Safety - Part 1: Forged steel components - Grade 8 EN 1492-1:200
31、0, Textile slings Safety - Part 1: Flat woven webbing slings made of man-made fibres EN 1492-2:2000, Textile slings Safety - Part 2: Round slings made of man-made fibres prEN 13414-1:1999, Steel wire rope slings Safety - Part 1: Wire rope slings 3 Terms and definitions For the purpose of this Part o
32、f EN 1677, the definitions given in !EN 1677-1:2000+A1:2008“ apply. 4 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 stre
33、ngth and durability of hooks, this 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 fo
34、r marking and the manufacturers certificate. Errors in 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
35、safe use associated with good practice are given in EN 818-6:2000. Table 1 contains those hazards which require action to reduce risk identified by risk assessment as being specific and significant for forged steel lifting hooks with latch, Grade 8. BS EN 1677-2:2000+A1:2008EN 1677-2:2000+A1:2008 (E
36、) 6 Table 1 Hazards and associated requirements Hazards identified Relevant clause Relevant in annex A of of annex A of clause/subclause of EN 1050: 1996 EN 292-2: 1991/ A1: 1995 this Part of EN 1677 1 Mechanical 1.3.2 5 Hazard due to 4.1.2.3 5 Inadequacy of 4.1.2.5 5 Strength 4.2.4 5 1.7.3 7 1.7.4
37、9 1.3 Cutting hazard 1.3.4 5.4 1.8 Friction or abrasion hazard 1.3.4 5.4 15 Errors of fitting 1.5.4 5.2 Hazard 9 17 Falling objects 1.3.3 5.6 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 The form of the hook
38、 is not specified in detail. For example, a minimum value of dimension 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 t
39、ype as designated in table 2 and figure 1. Each hook shall have a spring loaded latch conforming to 5.6 to ensure that the load cannot become accidentally unhooked. Table 2 Forms of hooks Form Description Principal use E Eye type Chain slings, wire rope slings and textile slings C Clevis type Mechan
40、ically assembled chain slings 5.2 Dimensions The principal dimensions of the hooks shall conform to table 3, in which the hook dimensions are related to the working load limit. BS EN 1677-2:2000+A1:2008EN 1677-2:2000+A1:2008 (E) 7 NOTE 1 With an eye type hook, connecting devices may be required betw
41、een the hook and the rest of the sling. NOTE 2 For direct use in wire ropeslings and textile 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 point height B shall be equal to or greater than the full thr
42、oat opening O (see figure 1); b) the full throat opening O shall not exceed 95 % of the actual seat diameter D; c) the hook latch shall be capable of closing over the maximum diameter of bar A, as indicated in figure 1, that can be admitted through the actual throat opening O 1 . BS EN 1677-2:2000+A
43、1:2008EN 1677-2:2000+A1:2008 (E) 8 1 Clevis type 2 Eye type 3 Maximum diameter of bar Figure 1 Dimensions of hooks BS EN 1677-2:2000+A1:2008EN 1677-2:2000+A1:2008 (E) 9 Table 3 Dimensions of hooks (see figure 1) Code Working D min. O min. O 1min. F min. H max. L max. Number load limit (WLL) t mm mm
44、mm mm mm mm 3 0,25 11 8 8 6 12 8 4 0,5 15 11 11 8 17 11 5 0,8 19 14 14 10 21 14 6 1,12 22 17 16 12 25 17 7 1,5 26 20 18 14 29 20 8 2 30 23 21 16 34 23 9 2,5 34 26 24 18 38 26 10 3,15 38 29 27 20 43 29 11 4 42 32 30 23 48 32 13 5,3 49 37 35 26 55 37 14 6 52 40 37 28 59 40 16 8 60 46 43 32 68 46 18 10
45、 67 51 48 36 76 51 19 11,2 71 54 51 38 80 54 20 12,5 75 57 53 40 85 57 22 15 82 63 58 44 93 63 23 16 85 65 60 46 96 65 25 20 95 72 68 51 107 72 26 21,2 98 75 70 52 111 75 28 25 106 81 76 57 120 81 32 31,5 119 91 85 64 135 91 36 40 134 102 96 72 152 102 40 50 150 115 107 81 170 115 45 63 168 129 120
46、90 190 129 5.3 Materials and heat treatment Materials and heat treatment shall be in accordance with 5.2 of !EN 1677-1:2000+A1:2008“. 5.4 Manufacturing methods and workmanship Manufacturing methods and workmanship shall in accordance with 5.3 of !EN 1677-1:2000+A1:2008“. 5.5 Mechanical properties Th
47、e mechanical properties shall conform to 5.4 of !EN 1677-1:2000+A1:2008“. BS EN 1677-2:2000+A1:2008EN 1677-2:2000+A1:2008 (E) 10 5.6 Hook latches The latch shall engage in the point of the hook to form a complete closure of mating surfaces. With the hook in any orientation the spring shall ensure th
48、at the latch is held positively in the closed position. Latches operated solely by gravity shall not be used. NOTE The force required to fully open the latch should not exceed that which can be applied manually. Table 4 contains guidance on the minimum initial torque and maximum torque during latch
49、opening necessary to fulfil these requirements. Table 4 Torque values for latches guidance Code number Minimum initial torque Maximum torque during opening from up to and including Nm Nm 3 5 0,05 0,1 6 7 0,1 0,2 8 10 0,2 0,4 11 14 0,3 0,6 16 18 0,75 1,5 19 23 1 2 25 28 2 4 32 45 3,5 7The spring shall be constructed from corrosion protected material and shall be able to withstand at least 10 000 complete openings of the latch without fracture. The latch shall be able to withstand force f 1 , applied across the width of the latch, equidistant
