1、BRITISH STANDARDBS EN ISO 8847:2004Small craft Steering gear Cable and pulley systemsThe European Standard EN ISO 8847:2004 has the status of a British StandardICS 47.080g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g4
2、0g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58IncorporatesCorrigendum No. 1BS EN ISO 8847:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 May 2004 BSI August 2006ISBN 0 580 43825 2National forewordThis British S
3、tandard is the official English language version of EN ISO 8847:2004, incorporating Corrigendum October 2005. It is identicalwith ISO 8847:2004. It supersedes BS 7163:1990 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GME/33, Small craft, which has t
4、he responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogueunder the section entitle
5、d “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance wit
6、h a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internat
7、ional and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 7, the Annex ZA page, an inside back cover and a back cover.The
8、BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments16060 August 2006 Addition to Annex ZACorrigendum No. 1EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 8847May 2004ICS 47.080 Supersedes EN 28847
9、:1989English versionSmall craft - Steering gear - Cable and pulley systems (ISO8847:2004)Petits navires - Appareils gouverner - Systmes drosses ras (ISO 8847:2004)Kleine Wasserfahrzeuge - Steuerungssystem - Kabel- undSeilzugsteuerung (ISO 8847:2004)This European Standard was approved by CEN on 8 Apr
10、il 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtaine
11、d on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretari
12、at has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
13、Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide
14、 for CEN national Members.Ref. No. EN ISO 8847:2004: EIncorporates CorrigendumOctober 2005I NESO 88:7402( 40E) 2Foreword This document (EN ISO 8847:2004) has been prepared by Technical Committee ISO/TC 188 “Small craft“ in collaboration with CMC.This European Standard shall be given the status of a
15、national standard, either by publication of an identical text or by endorsement, at the latest by November 2004, and conflicting national standards shall be withdrawn at the latest by November 2004. This document supersedes EN 28847:1989. This document has been prepared under a mandate given to CEN
16、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. According to the CEN/CENELEC Internal Regulations, the national sta
17、ndards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
18、Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8847:2004 has been approved by CEN as EN ISO 8847:2004 without any modifications. EN ISO 8847:2004Reference numberISO 8847:2004(E)OSI 4002INTERNATIONAL STANDARDISO8847Second edition2004-05-01Small c
19、raft Steering gear Cable and pulley systems Petits navires Appareils gouverner Systmes drosses et ras EN ISO 8847:2004IS:7488 O4002(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton ide ebtlnu
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24、Pulbisdehi n Switlrez dnaii ISO 4002 Allr ithgsr esedevrEN ISO 8847:2004IS:7488 O4002(E) I SO 4002 All irthgs ersedevr iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms and definitions. 14 Conditions of use 25 Constructional requirements. 26 Gear marking . 57 General installation
25、 requirements. 58 Owners manual 79 Installation manual 7EN ISO 8847:2004IS:7488 O4002(E) iv I SO 4002 All irthgs ersedevrForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International S
26、tandards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, als
27、o take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committe
28、es is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member 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 possi
29、bility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying 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
30、 8847:1987), which has been technically revised.EN ISO 8847:2004INTENRATIONAL TSANDADR IS:7488 O4002(E)I SO 4002 All irthgs ersedevr 1Small craft Steering gear Cable and pulley systems 1 Scope This International Standard specifies the minimum level of requirements for operation, construction and ins
31、tallation of cable and pulley steering systems on sailing craft of hull length up to 24 m, with or without an auxiliary engine. This 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
32、applies only to cable and pulley steering systems, whether for pedestal or bulkhead types. The design and specifications for the 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 Th
33、e 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. ISO 2408:2004, Steel wire ropes for general purpose
34、s Minimum requirements3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1cable a flexible mechanical means of transmitting tension forces from one location to another NOTE This cable could be metallic or non-metallic. 3.2cable and pulley steering
35、 system system in which rotation of the steering-wheel positions the rudder blade by mechanical means including cable, pulleys and a steering arm quadrant fastened to the rudder shaft 3.3steering arm component fixed to the rudder shaft, with at least one groove for the cable, concentric to the shaft
36、 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 Figure 1 c) EN ISO 8847:2004IS:7488 O4002(E) 2 I SO 4002 All irthgs ersedevra) Wheel quadrant b) Quadrant c) Tiller quadrant Figure 1 Examples of steering arm types 3.4cable loa
37、d force applied to the cable providing the necessary torque to move the rudder through the rudder shaft and steering arm while the boat is sailing 3.5cable in conduit steering systems system in which rotation of the steering-wheel positions the rudder blade by mechanical means including cable, condu
38、its with or without pulleys, and a steering arm fastened to the rudder shaft 3.6accessible capable of being reached for 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 compon
39、ents shall be fastened securely to the structure of the boat, reinforced where necessary, especially at the bulkhead mounting, 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 requiremen
40、ts 5.1 Strength All components shall be of sufficient strength to transmit either the tangential force of 450 N on the rim 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
41、 that the cable load is less than 25 % of the cable breaking load. The steering-arm radius shall be concentric with the 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. EN ISO 8847:2004IS:7488 O4002(E
42、) I SO 4002 All irthgs ersedevr 3ar W 5 u cable diameter. Figure 2 Radius, r5.3 Cables Cables shall be of flexible construction. 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 g
43、iven in ISO 2408. The tension shall be adjustable by means of an appropriate tensioner (e.g. a rigging screw) to minimize 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,
44、 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 u 19). If pulleys are of the swivel type, means shall be
45、provided to secure them in the correct position. Pulleys shall be fitted to guide the cable into and out of the sheave, and prevent it jamming against the pulley frame. 5.5 Conduit The conduit shall be of sufficient flexibility to permit a minimum bend radius of 50 times the smallest diameter of the
46、 cable it is specified for. The conduit shall be finished at each end with a conduit fitting, which provides a method of clamping the conduit securely and permitting the assembly to be locked onto a plate, pulley or terminal unit, which connects the cable onto the chain assembly, intermediate sheave
47、 or steering arm (see Figures 3 and 4). EN ISO 8847:2004IS:7488 O4002(E) 4 I SO 4002 All irthgs ersedevrKey 1 conduit fitting 2 conduit Figure 3 Example of a conduit fitting 5.6 Steering-wheel The steering-wheel shall be installed on a fixed shaft and shall withstand the axial load and tangential lo
48、ad test listed in 5.6.1 and 5.6.2. 5.6.1 Axial load test Apply a 670 N single push-pull force F (see Figure 5) for 10 cycles of at least 5 s duration each at any single location on the outer wheel rim or the centre of the handgrip of an external spoke in a direction parallel to the centreline of the
49、 fixed shaft. Permanent deformation greater than 50 mm is a failure of the wheel. 5.6.2 Tangential load test Apply a 450 N single push-pull force, F, in each direction (see Figure 6) for 10 cycles of at least 5 s duration each at any single location on the outer wheel rim or the centre of the handgrip of an external spoke of the steering-wheel without separation of the wheel. Figure 4 Example of a cable in the conduit system EN ISO 8847:2004IS:7488 O4002(E) I SO 4002 All irthgs e
