SIST EN 13411-6:2004+A1:2008
(Main)Terminations for steel wire ropes - Safety - Part 6: Asymmetric wedge socket
Terminations for steel wire ropes - Safety - Part 6: Asymmetric wedge socket
This European Standard specifies the minimum requirements, for asymmetrical wedge socket terminations for stranded steel wire ropes.
Examples of the construction and sizes of two separate designs of asymmetric wedge sockets are given in informative annexes A and B.
The informative annex C gives recommendations for safe use and inspection.
This European Standard deals with all significant hazards, hazardous situations and events relevant to asymmetric wedge sockets for terminations for steel wire ropes, when used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.
This standard applies to terminations of steel wire ropes with asymmetrical wedge sockets which are manufactured after the date of its publication.
This standard does not cover rope fatigue.
Endverbindungen für Drahtseile aus Stahldraht - Sicherheit - Teil 6: Asymmetrische Seilschlösser
Diese Europäische Norm legt die Mindestanforderungen an asymmetrische Seilschlösser für Endverbin-dungen an Litzenseilen aus Stahldraht fest.
Beispiele für Konstruktion und Nenngrößen für zwei verschiedene Ausführungen von asymmetrischen Seilschlössern sind in den informativen Anhängen A und B angegeben.
Anhang C gibt Empfehlungen für den sicheren Gebrauch und die Prüfung.
Diese Europäische Norm behandelt alle für asymmetrische Seilschlösser für Seilendverbindungen bedeutsamen Gefährdungen, gefährlichen Situationen und Ereignisse, wenn diese wie vorgesehen verwendet werden und wenn sie unter falschen Bedingungen eingesetzt werden, soweit dies vom Hersteller vernünftigerweise vorhersehbar ist.
Diese Norm gilt für Seilendverbindungen mit asymmetrischen Seilschlössern, die nach dem Datum der Veröffentlichung hergestellt wurden.
Die Dauerfestigkeit von Seilen ist nicht Gegenstand dieser Norm.
Terminaisons pour câbles en acier - Sécurité - Partie 6: Boîte à coin asymétrique
La présente Norme européenne spécifie les prescriptions minimales de sécurité des terminaisons pour boîte à coin
asymétrique destinées aux câbles en acier toronnés.
Des exemples de construction et de dimensions de deux modèles distincts de boîtes à coin asymétriques sont
donnés dans les Annexes informatives A et B.
L’Annexe informative C donne des recommandations relatives à la sécurité d’emploi et au contrôle.
La présente Norme européenne traite de tous les phénomènes, situations et événements dangereux significatifs
relatifs aux boîtes à coin asymétriques pour terminaisons de câbles en acier utilisables dans les conditions prévues
ainsi que dans des conditions de mauvais usage raisonnablement prévisibles par le fabricant.
La présente norme est applicable aux terminaisons de câbles en acier à boîte à coin asymétrique fabriquées après
sa date de publication.
La présente norme ne traite pas de la fatigue des câbles.
Zaključki jeklenih žičnih vrvi - Varnost - 6. del: Asimetrični zagozdni spoji
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Endverbindungen für Drahtseile aus Stahldraht - Sicherheit - Teil 6: Asymmetrische SeilschlösserTerminaisons pour câbles en acier - Sécurité - Partie 6: Boîte à coin asymétriqueTerminations for steel wire ropes - Safety - Part 6: Asymmetric wedge socket77.140.99Drugi železni in jekleni izdelkiOther iron and steel products53.020.30Pribor za dvigalno opremoAccessories for lifting equipmentICS:Ta slovenski standard je istoveten z:EN 13411-6:2004+A1:2008SIST EN 13411-6:2004+A1:2008en,fr01-december-2008SIST EN 13411-6:2004+A1:2008SLOVENSKI
STANDARD
SIST EN 13411-6:2004+A1:2008
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13411-6:2004+A1
October 2008 ICS 21.060.70; 53.020.30 Supersedes EN 13411-6:2004 English Version
Terminations for steel wire ropes - Safety - Part 6: Asymmetric wedge socket
Terminaisons pour câbles en acier - Sécurité - Partie 6: Boîte à coin asymétrique
Endverbindungen für Drahtseile aus Stahldraht -Sicherheit - Teil 6: Asymmetrische Seilschlösser This European Standard was approved by CEN on 24 March 2004 and includes Amendment 1 approved by CEN on 18 September 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 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 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 national 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 United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 13411-6:2004+A1:2008: ESIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 2 Contents
page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 List of significant hazards.6 5 Safety requirements and/or measures.7 6 Verification of safety requirements.9 7 Information for use.12 Annex A (informative)
Asymmetric wedge socket with cast socket body – Design 1.14 Annex B (informative)
Asymmetric wedge socket with cast socket body – Design 2.17 Annex C (informative)
Recommendations for safe use and inspection.20 Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC"""".23 Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""".24 Bibliography.25
SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 3 Foreword This document (EN 13411-6:2004+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 status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document supersedes EN 13411-6:2004. This document includes Amendment 1, approved by CEN on 2008-09-18. 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(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document." Annexes A, B and C are informative. This document includes a Bibliography. EN 13411 with the general title Terminations for steel wire ropes – Safety, consists of the following parts:
Part 1: Thimbles for steel wire rope slings Part 2: Splicing of eyes for wire rope slings Part 3: Ferrules and ferrule-securing Part 4: Metal and resin socketing Part 5: U-bolt wire rope grips Part 6: Asymmeteric wedge socket Part 7: Symmetric wedge socket
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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 4 Introduction This European Standard is a Type C Standard as stated in EN 1070. This European Standard has been prepared to provide a means of conforming with the essential requirements of the Machinery Directive and associated EFTA regulations. Purchasers ordering to this standard are advised to specify in their purchasing contract that the supplier operates an independently verified quality assurance system to ensure themselves that products claimed to comply consistently achieve the required level of quality. The wedge sockets concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. When provisions of this Type C standard are different from those which are stated in Type A or B standards, the provisions of this Type C standard take precedence over the provisions of the other standards, for asymmetric wedge sockets that have been designed and produced according to the provisions of this Type C standard. SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 5 1 Scope This European Standard specifies the minimum requirements, for asymmetrical wedge socket terminations for stranded steel wire ropes. Examples of the construction and sizes of two separate designs of asymmetric wedge sockets are given in informative annexes A and B. The informative annex C gives recommendations for safe use and inspection. This European Standard deals with all significant hazards, hazardous situations and events relevant to asymmetric wedge sockets for terminations for steel wire ropes, when used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. This standard applies to terminations of steel wire ropes with asymmetrical wedge sockets which are manufactured after the date of its publication. This standard does not cover rope fatigue. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1050:1996, Safety of machinery – Principles for risk assessment. EN 1369: 1996, Founding - Magnetic particle inspection. EN 1371-1:1997, Founding – Liquid penetrant inspection – Part 1: Sand, gravity die and low
pressure die castings. EN 10045-1, Metallic materials - Charpy impact test – Part 1: Test method. EN 12385-2:2002, Steel wire ropes - Safety - Part 2: Definitions, designation and classification. EN 45012, General requirements for bodies operating assessment and certification/registration of quality systems ISO/IEC Guide 62:1996). EN ISO 7500-1, Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines (ISO 7500-1:1999). EN ISO 12100-2:2003, Safety of machinery – Basic concepts, general principles for design – Part 2: Technical principles and specifications (ISO 12100-2:2003). 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 12385-2:2002 and the following apply. 3.1 asymmetric wedge socket assembly consisting of a socket body, wedge, and pin; when assembled the centre line of the pin is directly in line with the longitudinal axis of the live portion of the rope
3.2 socket body principal component of a wedge socket termination having an internal tapered form (see Figure 1) suitable for receiving a wedge (see 3.3) and the rope with which the wedge is associated 3.3 wedge flat tapered component with peripheral groove, suitable for fitting into a tapered socket body to accommodate a rope of matching nominal diameter, see Figure 1 SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 6 3.4 pin removable component intended to facilitate connection of the socket body to its anchorage point 3.5 lot number of asymmetric wedge sockets from which samples are selected for testing purposes which are of the same type and dimension, each of their constituent components manufactured during the same production run from material of the same cast and subjected to the same heat treatment process 4 List of significant hazards This standard contains all the significant hazards, hazardous situations and events, as far as they have been dealt with in this standard, identified by risk assessment as significant for this type of steel wire rope termination which require action to eliminate or reduce the risk. In particular hazards caused by accidental release of a load, or release of a load due to failure of an asymmetric wedge socket puts at risk, either directly or indirectly, the safety or health of those persons within the hazard zone. Errors in the fitting of accessories can also lead to premature failure and this standard contains dimensional requirements to allow correct fit. Table 1 contains those hazards that require action to reduce risk identified by risk assessment as being specific and significant for asymmetric wedge sockets. Table 1 — Hazards and associated requirements Hazards identified in annex A of
EN 1050:1996 Relevant clause of annex A of EN ISO 12100-2:2003 Relevant clause/ subclause of this Part of EN . 1.1.5 Mechanical hazard due to 1.3.1 5
inadequacy of strength 4.1.2.3 5
4.1.2.4 5
4.2.4 7
4.3.2 7 1.3 Cutting or severing hazard 1.3.4 7 15 Errors of fitting 4.3.2 7 SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 7 5 Safety requirements and/or measures 5.1 Geometry of wedge and socket body Asymmetric wedge socket terminations for ropes shall conform to the following geometrical criteria (see Figure 1): The longitudinal axis of the live portion of the rope shall be perpendicular to the longitudinal axis of the pin.
The difference between the wedge angle (α) and the socket angle (β) shall be not greater than 2°. The internal side surfaces of the socket body and the wedge in contact with the rope shall be straight. The clamping length between socket body and the wedge in contact with the live portion of the rope shall be a minimum length (P) equal to 4,3 times the nominal rope diameter.
The rope groove in the socket body and the wedge shall not exhibit protrusions, marks or casting joints that would affect the intimate contact with the rope.
Key 1 Socket body 2 Wedge Figure 1 – Functional dimensions (pin and securing means not shown) SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 8 5.2 Security of the pin The pin shall be provided with a means for securing it in position when in operation. 5.3 Mechanical properties 5.3.1 Termination and wedge security When tested in accordance with 6.2.2 the assembled and loaded termination, after initial settlement, shall during the noted two minute period exhibit no further movement between the rope and the termination, monitored either as movement of the tail of the rope, or as relative movement between the rope and the wedge. After release of the specified load when tested in accordance with 6.2.2 no relative movement shall occur between the wedge and socket body. 5.3.2 Manufacturing proof force and deformation test When tested in accordance with 6.2.3 and 6.3.1, the socket body arms and pin shall show no sign of permanent deformation.
5.3.3 Fatigue behaviour of the socket body and pin When tested in accordance with 6.2.4 the socket body and pin shall not exhibit any indications of cracks after 75000 load cycles.
The socket shall also exhibit no sign of local permanent deformation in the pin eye holes. 5.3.4 Termination efficiency When tested in accordance with 6.2.5 the efficiency of the assembled termination shall be at least 80% of the minimum breaking force of the rope. 5.3.5 Low temperature properties The materials of the socket, body and pin when tested in accordance with 6.2.6 shall possess minimum low temperature ductility and toughness qualities at –20°C as follows: Steel socket body and/or pin: Minimum average Charpy impact value of 27 J, with no individual value less than 18 J. Spheroidal graphite cast iron and any other cast irons: socket body: Minimum average Charpy impact value of 12 J, with no individual value less than 9 J.
SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 9 6 Verification of safety requirements 6.1 Qualifications of personnel All testing and examination shall be carried out by a competent person. 6.2 Type testing 6.2.1 General Two type tests shall be carried out for each requirement, in accordance with 6.2.2 to 6.2.5, on assembled terminations of each design, material and method of manufacture, using the highest minimum breaking force of rope for which the socket is designed. If the four requirements tests are carried out using the same socket body, wedge and pin, they shall be conducted in the order of termination and wedge security, deformation, fatigue and tensile efficiency testing, renewing the rope as necessary. The testing machine shall conform to the requirements of EN ISO 7500-1. If the dimensional criteria or the chemical composition, or heat treatment of the socket body and pin are subsequently varied outside the usual manufacturing tolerances, the type tests shall be repeated.
6.2.2 Termination and wedge security test Subject the assembled termination to a load of 20% of the minimum breaking force of the rope, sustain this load for an initial period to allow settlement of the termination, then continue to sustain for a further 2 min before removing the load. 6.2.3 Deformation test The termination shall be further loaded until this load reaches a value equal to 40% of the minimum breaking force of the rope. The load shall then be removed, the termination dismantled and the socket body and pin examined for permanent deformation. 6.2.4 Fatigue test The test shall be carried out on an in-line tensile fatigue machine. The termination shall be prevented from rotating and the test shall consist of the application of the cycle force from 15% to 30% of the minimum breaking force of the rope along the rope axis for 75000 cycles. The frequency of the force shall not exceed 5 Hz. The component parts shall be submitted to either dye penetrant or magnetic particle inspection in accordance with EN 1369 or EN 1371-1 both before and after the fatigue test to enable any crack initiation and propagation as a result of fatigue to be readily identified. NOTE More than one rope may be required to enable the socket body to achieve 75000 cycles. 6.2.5 Tensile efficiency test Subject the assembled termination to an initial load of 60% of the minimum breaking force of the rope, then increasing this load at a rate of not more than 0,5% of the breaking force per second.
The test shall be continued until either rope slip or breakage occurs.
If terminations are tested in pairs, the distance between the inner faces of the socket bodies shall be at least 30 d. SIST EN 13411-6:2004+A1:2008
EN 13411-6:2004+A1:2008 (E) 10 6.2.6 Charpy impact test Charpy V-notch impact tests shall be carried out in accordance with EN 10045-1 on materials of socket bodies and pins of all sizes. Three samples shall be tested at a temperature of -20 °C. For tests where the size of socket body is too small to provide a suitable test piece, tests may be carried out on sample material which shall be of the same specification and heat treatment. 6.2.7 Acceptance criteria for type testing 6.2.7.1 Termination and wedge security, deformation, fatigue and efficiency tests Should one sample fail these tests, and on examination it is found to be due to a material defect in the socket body or pin, the manufacturing process shall be re-examined and amended to eliminate such defects. After which a further two terminations of the same size, design and material content shall be tested. If these pass, then the termination shall be deemed to have passed the type test. If one or both fail the re-test, or one or both terminations fail the original tests due to its design, the terminations shall be deemed to have failed the type test. 6.2.7.2 Charpy impact tests If the average of the three test values and the three individual test values are equal to or greater than the values specified in 5.3.5 the wedge socket of the size submitted for type testing shall be deemed to conform to this European Standard.
If one sample fails to meet the specified individual value or if the average of the three individual values fails to meet the specified average value, two further samples shall be taken and both shall pass the individual value test and the average of the five samples shall pass the average test in order for the respective component of the size submitted for type testing to be deemed to conform to this European Standard. If two or three samples fail to meet the specified individual value, the respective component of the size submitted for type testing shall be deemed not to conform to this European Standard. 6.3 Manufacturing tests 6.3.1 Manufacturing proof test The socket body and pin shall be subjected to the manufacturing proof force equal to a load of 40% of the highest minimum breaking force of rope for which the socket is designed. This shall be sustained without deviating
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