1、Small craft - Steering gear - Cable and pulley systems (ISO 8847:2004)BS EN ISO 8847:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEANSTANDARDNORME EUROPENNE EUROPISCHE NORMEN ISO 8847 August 2017ICS 47.080 Supersedes EN ISO 8847:2004EnglishVersionSmall cr
2、aft - Steering gear - Cable and pulley systems (ISO 8847:2004)Petits navires -Appareils gouverner- Systmesdrosses et ras (ISO 8847:2004)Kleine Wasserfahrzeuge - Steuerungssystem - Kabel- und Seilzugsteuerung (ISO 8847:2004)This European Standard was approved by CEN on 10 July 2017.CEN members are bo
3、und to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical referencesconcerning such national standards may be obtained on application to the CEN
4、-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 bytranslation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC ManagementCentre has
5、the same status as the officialversions.CEN members are the nationalstandards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo
6、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia,Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Bruss
7、els 2017 CEN All rights of exploitation in any form and by any means reservedworldwide for CENnational Members.Ref. No. EN ISO 8847:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 8847:2017. It is identical to ISO 8847:2004. It supersedes BS EN ISO 8847:2004, which is
8、 withdrawn.The UK participation in its preparation was entrusted to Technical Committee GME/33, Small craft.A list of organizations represented on this committee can be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
9、 are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 96501 2ICS 47.080Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the
10、Standards Policy and Strategy Committee on 30 November 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 8847:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8847 August 2017 ICS 47.080 Supersedes EN ISO 8847:2004English Version Small craft -
11、 Steering gear - Cable and pulley systems (ISO 8847:2004) Petits navires - Appareils gouverner - Systmes drosses et ras (ISO 8847:2004) Kleine Wasserfahrzeuge - Steuerungssystem - Kabel- und Seilzugsteuerung (ISO 8847:2004) This European Standard was approved by CEN on 10 July 2017. CEN members are
12、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 th
13、e 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 Cent
14、re 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuani
15、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 1
16、7, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8847:2017 EBS EN ISO 8847:2017EN ISO 8847:2017 (E) 3 European foreword The text of ISO 8847:2004 has been prepared by Technical Committee ISO/TC 188 “Small
17、 craft” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 8847:2017. 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 February 2018, and conflicting nati
18、onal standards shall be withdrawn at the latest by February 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 884
19、7:2004. 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 Annex ZA, which is an integral part of this document
20、. 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, Former Yugoslav Republic of Macedonia, France, G
21、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8847:2004 has been approved by CEN as EN I
22、SO 8847:2017 without any modification. BS EN ISO 8847:2017EN ISO 8847:2017 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2013/53/EU This European standard has been prepared under a mandate given to CEN by the European Commissi
23、on to provide one means of conforming to Essential Requirements of the New Approach Directive 2013/53/EU. Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one member state, compliance with the n
24、ormative clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements of that Directive and associated EFTA regulations. Table ZA.1: Correspondence between this European Standard and Direct
25、ive 2013/53/EU Clauses/sub-clauses of this standard Corresponding annexes/paragraphs of Directive 2013/53/EU Comments All Clauses Annex I, Clause 5.4.1 - Steering system, general but excluding propulsion control systems The correspondence between this European Standard and Directive 2013/53/EU is in
26、 respect of cable and pulley steering systems on sailing craft from the wheel to, and including, the steering arm only. Rudder shafts and rudder blades are excluded. This scope of this standard is restricted to sailing craft only. This Standard does not address an emergency means of steering. This s
27、tandard does not include propulsion control systems within its scope. 8; 9 Annex 1.A.2.5 Owners Manual Include the maximum wheel diameter in the Owners Manual. All Clauses Annex II, Components of watercraft, paragraph (3) - Steering wheels, steering mechanisms and cable assemblies. This Standard app
28、lies to the components of cable and pulley steering systems for sailing craft from the wheel to, and including, the steering arm only. Rudder shafts and rudder blades are excluded. BS EN ISO 8847:2017This page deliberately left blankISO 8847:2004(E) ISO 2004 All rights reserved iiiContents Page Fore
29、word iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Conditions of use 2 5 Constructional requirements. 2 6 Gear marking . 5 7 General installation requirements. 5 8 Owners manual 7 9 Installation manual 7 ISO 8847:2004(E) ISO 2004 All rights reserved iiiContents Page Foreword i
30、v 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Conditions of use 2 5 Constructional requirements. 2 6 Gear marking . 5 7 General installation requirements. 5 8 Owners manual 7 9 Installation manual 7 BS EN ISO 8847:2017ISO 8847:2004(E) iv ISO 2004 All rights reservedForeword ISO
31、 (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical com
32、mittee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrot
33、echnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the mem
34、ber bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identify
35、ing any or all such patent rights. ISO 8847 was prepared by Technical Committee ISO/TC 188, Small craft. This second edition cancels and replaces the first edition (ISO 8847:1987), which has been technically revised.BS EN ISO 8847:2017INTERNATIONAL STANDARD ISO 8847:2004(E) ISO 2004 All rights reser
36、ved 1Small craft Steering gear Cable and pulley systems 1 Scope This International Standard specifies the minimum level of requirements for operation, construction and installation of cable and pulley steering systems on sailing craft of hull length up to 24 m, with or without an auxiliary engine. T
37、his International Standard sets requirements for the design and construction of all components of a steering system from the wheel to, and including, the steering arm. It applies only to cable and pulley steering systems, whether for pedestal or bulkhead types. The design and specifications for the
38、rudder shaft and rudder blade are within the province of the naval architect and are assumed to be appropriate to the size and speed of the boat. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition c
39、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2408:2004, Steel wire ropes for general purposes Minimum requirements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1
40、cable a flexible mechanical means of transmitting tension forces from one location to another NOTE This cable could be metallic or non-metallic. 3.2 cable and pulley steering system system in which rotation of the steering-wheel positions the rudder blade by mechanical means including cable, pulleys
41、 and a steering arm quadrant fastened to the rudder shaft 3.3 steering arm component fixed to the rudder shaft, with at least one groove for the cable, concentric to the shaft centre NOTE The steering arm may be a wheel quadrant see Figure 1 a), a quadrant see Figure 1 b) or a tiller quadrant see Fi
42、gure 1 c) BS EN ISO 8847:2017ISO 8847:2004(E) 2 ISO 2004 All rights reserveda) Wheel quadrant b) Quadrant c) Tiller quadrant Figure 1 Examples of steering arm types 3.4 cable load force applied to the cable providing the necessary torque to move the rudder through the rudder shaft and steering arm w
43、hile the boat is sailing 3.5 cable in conduit steering systems system in which rotation of the steering-wheel positions the rudder blade by mechanical means including cable, conduits with or without pulleys, and a steering arm fastened to the rudder shaft 3.6 accessible capable of being reached for
44、inspection, removal or maintenance, without removal of a permanent element of the boat structure 4 Conditions of use To ensure the proper operation of a steering system, all components shall be fastened securely to the structure of the boat, reinforced where necessary, especially at the bulkhead mou
45、nting, pedestal and at pulleys. The steering arm connection to the rudder shaft shall also be capable of transmitting the steering torque to the rudder. 5 Constructional requirements 5.1 Strength All components shall be of sufficient strength to transmit either the tangential force of 450 N on the r
46、im of the wheel specified in 5.6.2, or the maximum torque necessary to steer the rudder. 5.2 Steering arm The radius of the steering arm and the cable diameter shall be chosen such that the cable load is less than 25 % of the cable breaking load. The steering-arm radius shall be concentric with the
47、shaft centre. The radius at the end of the groove where the cable is led out shall be at least 5 times the diameter of the cable used. See Figure 2. BS EN ISO 8847:2017ISO 8847:2004(E) ISO 2004 All rights reserved 3ar W 5 cable diameter. Figure 2 Radius, r 5.3 Cables Cables shall be of flexible cons
48、truction. Cables shall be suitable for its intended application (e.g. resistant to UV, salt water, hydrocarbons and ozone). Wire-rope characteristics shall meet the specifications given in ISO 2408. The tension shall be adjustable by means of an appropriate tensioner (e.g. a rigging screw) to minimi
49、ze lost motion. The cable shall be aligned with the grooves when leaving the steering arm. The cable termination shall be appropriate to transfer the cable loads. EXAMPLE Wire rope, thimble and two cable clamps; swaged terminals; splicing with thimble. 5.4 Pulleys The sheave diameter shall be suitable for the cable used or recommended. NOTE The generally accepted minimum diameter is 16 times the diameter of the cable (7 19). If pulleys are of the swivel type, means shall be provided to secure them in the correct po
