1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 11806-2:2011Agricultural and forestrymachinery Safetyrequirements and testing forportable, hand-held, poweredbrush-cutters and grass-trimmersPart 2: Machines for use wi
2、th back-packpower unit (ISO 11806-2:2011)BS EN ISO 11806-2:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 11806-2:2011. It supersedes BS ISO 14865:1998 and BS ISO 14740:1998, which are withdrawn.The UK participation in its preparation was entrusted to
3、Technical Committee AGE/29, Forestry machinery.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 application. The British Sta
4、ndards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 66314 7 ICS 65.060.80 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 201
5、2.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11806-2 December 2011 ICS 65.060.80 English Version Agricultural and forestry machinery - Safety requirements and testing for portable, hand-held, powered brush-cutters and grass
6、-trimmers - Part 2: Machines for use with back-pack power unit (ISO 11806-2:2011) Matriel agricole et forestier - Exigences de scurit et essais pour dbroussailleuses et coupe-herbe portatifs moteur - Partie 2: Machines pour utilisation avec source motrice porte dos (ISO 11806-2:2011) Land- und forst
7、wirtschaftliche Maschinen - Sicherheitstechnische Anforderungen und Prfung fr tragbare handgehaltene motorbetriebene Freischneider und Grastrimmer - Teil 2: Gerte fr den Gebrauch mit rckentragbarer Antriebseinheit (ISO 11806-2:2011) This European Standard was approved by CEN on 30 November 2011. CEN
8、 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 appl
9、ication to the 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 Ma
10、nagement Centre 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
11、erlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation
12、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11806-2:2011: EBS EN ISO 11806-2:2011EN ISO 11806-2:2011 (E) 3 Foreword This document (EN ISO 11806-2:2011) has been prepared by Technical Committee ISO/TC 23 “Tractors and machinery for agriculture and forest
13、ry“ in collaboration with Technical Committee CEN/TC 144 “Tractors and machinery for agriculture and forestry” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the late
14、st by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such pa
15、tent rights. 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. For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
16、 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, France, Germany, Greece, Hungary, Iceland, Irelan
17、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 11806-2:2011 has been approved by CEN as a EN ISO 11806-2:2011 without any modification. BS EN ISO
18、 11806-2:2011EN ISO 11806-2:2011 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association
19、 to provide one means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery. 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
20、 with the normative clauses of this standard 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. WARNING Other requirements and other EU Directives may be applicable to the p
21、roduct(s) falling within the scope of this standard. BS EN ISO 11806-2:2011ISO 11806-2:2011(E) ISO 2011 All rights reserved iiiContents PageForeword ivIntroduction .v1 Scope 12 Normative references .13 Terms and definitions .24 Safety requirements and/or protective measures 34.1 General .34.2 Distan
22、ce to cutting attachment .34.3 Handgrip on back-pack power unit 44.4 Harness for back-pack power unit 44.5 Hydraulic and pneumatic pipes and hoses 45 Information for use .5Annex A (informative) List of significant hazards 6BS EN ISO 11806-2:2011ForewordISO (the International Organization for Standar
23、dization) 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 committee has been established has the right to
24、 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 electrotechnical standardization.International Stand
25、ards 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 member bodies for voting. Publication as an Inter
26、national 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 identifying any or all such patent rights.ISO 11806-2 w
27、as prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 17, Manually portable forest machinery.This first edition of ISO 11806-2 cancels and replaces ISO 14865:1998 and ISO 14740:1998.ISO 11806 consists of the following parts, under the gene
28、ral title Agricultural and forestry machinery Safety requirements and testing for portable, hand-held, powered brush-cutters and grass-trimmers: Part 1: Machines fitted with an integral combustion engine Part 2: Machines for use with back-pack power unitISO 11806-2:2011(E)iv ISO 2011 All rights rese
29、rvedBS EN ISO 11806-2:2011IntroductionThis document is a type-C standard as stated in ISO 12100.The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are covered are indicated in the scope of this document.When requirements of this type-C standard are diff
30、erent from those which are stated in type-A or type-B standards, the requirements of this type-C standard take precedence over the requirements of the other standards for machines that have been designed and built according to the requirements of this type-C standard.ISO 11806-2:2011(E) ISO 2011 All
31、 rights reserved vBS EN ISO 11806-2:2011BS EN ISO 11806-2:2011INTERNATIONAL STANDARD ISO 11806-2:2011(E)Agricultural and forestry machinery Safety requirements and testing for portable, hand-held, powered brush-cutters and grass-trimmers Part 2: Machines for use with back-pack power unit1 ScopeThis
32、part of ISO 11806 gives safety requirements and measures for their verification for the design and construction of portable, hand-held, powered brush-cutters and grass-trimmers with a back-pack-mounted combustion engine power source and mechanical power transmission between the power source and the
33、cutting attachment. Methods for the elimination or reduction of hazards arising from the use of these machines and the type of information on safe working practices to be provided by the manufacturer are specified.This part of ISO 11806, taken together with the relevant clauses of ISO 11806-1 (see 4
34、.1), deals with all significant hazards, hazardous situations and hazardous events, with the exception of whole-body vibration from the back-pack power unit, relevant to these machines when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.
35、NOTE 1 A standardized test procedure for measuring whole-body vibration from the back-pack power unit is presently not available.NOTE 2 See Annex A, together with Annex A in ISO 11806-1:2011, for a list of significant hazards.This part of ISO 11806 is applicable to portable, hand-held, powered brush
36、-cutters and grass-trimmers manufactured after its date of publication.This part of ISO 11806 is not applicable to machines equipped with metallic cutting attachments consisting of more than one piece, e.g. pivoting chains or flail blades.2 Normative referencesThe following referenced documents are
37、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 4413:2010, Hydraulic fluid power General rules and safety requirements for systems an
38、d their componentsISO 4414:2010, Pneumatic fluid power General rules and safety requirements for systems and their componentsISO 11806-1: 2011, Agricultural and forestry machinery Safety requirements and testing for portable, hand-held, powered brush-cutters and grass-trimmers Part 1: Machines fitte
39、d with an integral combustion engineISO 12100:2010, Safety of machinery General principles for design Risk assessment and risk reductionISO 13857:2008, Safety of machinery Safety distances to prevent hazard zones being reached by upper and lower limbs ISO 2011 All rights reserved 1BS EN ISO 11806-2:
40、20113 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 11806-1 and the following apply.NOTE Figure 1 provides an example of a brush-cutter with a back-pack power source falling within the scope of this part of ISO 11806.3.1applianceassembly of drive shaf
41、t tube, cutting attachment with its guard and handles3.2machinecomplete brush-cutter (or grass-trimmer), including back-pack power unit and appliance12387654Key1 harness2 back-pack power unit3 barrier4 blade5 cutting-attachment guard6 drive-shaft tube7 front handle8 rear handleFigure 1 Example of a
42、brush-cutter with back-pack power unitISO 11806-2:2011(E)2 ISO 2011 All rights reservedBS EN ISO 11806-2:20114 Safety requirements and/or protective measures4.1 GeneralMachines shall comply with the safety requirements and/or protective measures of this clause. In addition, the machine shall be desi
43、gned according to the principles of ISO 12100 for relevant but not significant hazards which are not dealt with by this part of ISO 11806.Machines shall comply with ISO 11806-1:2011, Clause 4, except for 4.5.The safe operation of a brush-cutter and a grass-trimmer also depends on the safe environmen
44、t associated with the use of personal protective equipment (PPE), such as gloves, slip-resistance footwear, and leg, eye and hearing protective equipment, as well as safe working procedures (see ISO 11806-1:2011, 5.1).If a grass-trimmer can be converted to a brush-cutter then the converted machine s
45、hall comply with requirements for a brush-cutter and vice versa.Except where otherwise specified in this part of ISO 11806, the safety distances specified in ISO 13857:2008, 4.2.4.1 and 4.2.4.3, shall be met.4.2 Distance to cutting attachment4.2.1 RequirementsMachines with front and rear handles sha
46、ll have a minimum straight-line distance of 1 200 mm from the mid-point of the rear handle to the nearest unguarded point of the cutting attachment (point A in Figure 2). Point A is the intersection between the plane perpendicular to the cutting path and the side-edge of the cutting-attachment guard
47、.This minimum distance shall apply to all recommended cutting attachments.4.2.2 VerificationThe distance shall be verified by measurement.Dimensions in millimetresA521 3 46 1 200Key1 cutting attachment2 guard3 centre at rear of front handle4 handle grip5 flexible power transmission6 barrierFigure 2
48、Example of an appliance with a saw-blade cutting attachment and front and rear handlesISO 11806-2:2011(E) ISO 2011 All rights reserved 3BS EN ISO 11806-2:20114.3 Handgrip on back-pack power unit4.3.1 RequirementA handgrip shall be available which may be a part of the frame and which shall allow an o
49、perator to grasp the back-pack power unit for handling and transport.The handgrip shall be designed such that it can be fully gripped by an operator when wearing gloves, it provides the necessary sureness of grip by its shaping and surface, its length is at least 100 mm and where, for a bail or closed hand-grip, this length is straight or curved at a radius greater than 100 mm together with any blend radius, but not more than 10 mm at one or both ends of the gripping surface.4.3.2 VerificationThe handgrip des
