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1、BRITISH STANDARD BS EN ISO 8847:2004 Small craft Steering gear Cable and pulley systems The European Standard EN ISO 8847:2004 has the status of a British Standard ICS 47.080 ? Incorporates Corrigendum No. 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled
2、 Copy, (c) BSI BS EN ISO 8847:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 May 2004 BSI August 2006 ISBN 0 580 43825 2 National foreword This British Standard is the official English language version of EN ISO 8847:2004, incorporat
3、ing Corrigendum October 2005. It is identical with 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 It supersedes BS 7163:1990 which is withdrawn.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 the responsibility to: A list of organizations represented on this committee ca
4、n be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search”
5、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 with a British Standard does not of itself confer immunity from legal obliga
6、tions. 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 international and European developments and promulgate them in the UK. Summary of
7、 pages This 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 BSI copyright notice displayed in this document indicates when the doc
8、ument was last issued. Amendments issued since publication Amd. No. DateComments 16060 August 2006 Addition to Annex ZA Corrigendum No. 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS
9、O 8847 May 2004 ICS 47.080Supersedes EN 28847:1989 English version Small craft - Steering gear - Cable and pulley systems (ISO 8847:2004) Petits navires - Appareils gouverner - Systmes drosses ras (ISO 8847:2004) Kleine Wasserfahrzeuge - Steuerungssystem - Kabel- und Seilzugsteuerung (ISO 8847:2004)
10、 This European Standard was approved by CEN on 8 April 2004. 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 refer
11、ences concerning such national standards may be obtained 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 translation under the responsibility of a CEN member in
12、to its own language and notified to the Central Secretariat has the same status as the official versions. 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
13、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll right
14、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8847:2004: E Incorporates Corrigendum October 2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I NESO 88:7402( 40E) 2 Foreword Th
15、is 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 national standard, either by publication of an identical text or by endorsement, at the latest by November 2004, and confl
16、icting 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 by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s)
17、. 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 standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, C
18、zech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8847:2004 has been a
19、pproved by CEN as EN ISO 8847:2004 without any modifications. EN ISO 8847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 8847:2004(E) OSI 4002 INTERNATIONAL STANDARD ISO 8847 Second edition 2004-05-01 Small craft S
20、teering gear Cable and pulley systems Petits navires Appareils gouverner Systmes drosses et ras EN ISO 8847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7488 O4002(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In
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24、this lbupictaion maeb y cudorperro de tuilizi den yna form ro na ybm ynae,s lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 ?en
25、eG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dna ii ISO 4002 Allr ithgsr esedevr EN ISO 8847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7488 O4002
26、(E) I SO 4002 All irthgs ersedevriii Contents Page Forewordiv 1Scope1 2Normative references .1 3Terms and definitions.1 4Conditions of use2 5Constructional requirements.2 6Gear marking.5 7General installation requirements.5 8Owners manual 7 9Installation manual7 EN ISO 8847:2004 Licensed Copy: sheff
27、ieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7488 O4002(E) ivI SO 4002 All irthgs ersedevr Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing
28、International Standards 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 liaiso
29、n with ISO, also 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 tec
30、hnical committees 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 dra
31、wn 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 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 fi
32、rst edition (ISO 8847:1987), which has been technically revised. EN ISO 8847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:7488 O4002(E) I SO 4002 All irthgs ersedevr1 Small craft Steering gear Cable and pull
33、ey 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. This International Standard sets requirements
34、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 rudder shaft and rudder blade are within the
35、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 cited applies. For undated references, the lat
36、est 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 cable a flexible mechanical means of transmit
37、ting 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 and a steering arm quadrant fastened to the
38、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 Figure 1 c) EN ISO 8847:2004 Licensed Copy: she
39、ffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:7488 O4002(E) 2I SO 4002 All irthgs ersedevr a) 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 t
40、o move the rudder through the rudder shaft and steering arm while 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
41、the rudder shaft 3.6 accessible 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 components shall be fastened securely to the structure of the boa
42、t, 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 requirements 5.1 Strength All components shall be of sufficient stren
43、gth 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 that the cable load is less than 25 % of the cable breakin
44、g 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 8847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:12:33 GMT+00:00
45、 2006, Uncontrolled Copy, (c) BSI IS:7488 O4002(E) I SO 4002 All irthgs ersedevr3 a r W 5 ? cable diameter. Figure 2 Radius, r 5.3 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-r
46、ope 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 minimize lost motion. The cable shall be aligned with the grooves when leaving the steering arm. The cable termination shall be appropri
47、ate 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).
48、 If pulleys are of the swivel type, means shall be 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 b
49、end radius of 50 times the smallest diameter of the 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 or steering arm (see Figures 3 and 4). EN ISO 8847:2004 Licensed Copy: s