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1、BRITISH STANDARD BS EN ISO 11806:1997 Agricultural and forestry machinery Portable hand-held combustion engine driven brush cutters and grass trimmers Safety The European Standard EN ISO 11806:1997 has the status of a British Standard ICS 65.060.80 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov
2、 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11806:1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1997 BSI 03-1999 ISBN 0 580 2745
3、4 3 National foreword This British Standard is the English language version of EN ISO 11806:1997. It is identical with ISO 11806:1997. The UK participation in its preparation was entrusted to Technical Committee AGE/29, Forestry machinery, which has the responsibility to: aid enquirers to understand
4、 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. A list of organizations represented on this
5、committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards normally include an annex which lists normative references to international publications with their corresponding or European publications. The British Standards whic
6、h implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does no
7、t purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside f
8、ront cover, pages i and ii, the EN ISO title page, pages 2 to 26, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publ
9、ication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11806:1997 BSI 03-1999i Contents Page National forewordInside front cover Foreword2 Text of EN ISO 118063 Licensed Copy: sheffieldun sheffieldun, na, Sun
10、Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11806 June 1997 ICS 65.060.80 Descriptors: Agricultural machinery, f
11、orest equipment, brush trimmers, portable equipment, heat engines, safety of machinery, accident prevention, safety requirements, specifications, design, inspection, hazards, technical notices, utilization, marking English version Agricultural and forestry machinery Portable hand-held combustion eng
12、ine driven brush cutters and grass trimmers Safety (ISO 11806:1997) Matriel agricole et forestier Dbroussailleuses et coupe-herbe portatifs moteur thermique Scurit (ISO 11806:1997) Land- und Forstmaschinen Tragbare handgefhrte Freischneider und Trimmer mit Antrieb durch Verbrennungsmotor Sicherheit
13、(ISO 11806:1997) This European Standard was approved by CEN on 1997-02-16. 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 bibliog
14、raphical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a
15、CEN member into 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwa
16、y, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worl
17、dwide for CEN national Members.Ref. No. EN ISO 11806:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11806:1997 BSI 03-1999 2 Foreword The text of EN ISO 11806:1997 has been prepared by Technical Committee CEN/TC 144 “Tractors
18、and machinery for agriculture and forestry”, the secretariat of which is held by AFNOR, in collaboration with Technical Committee ISO/TC 23 “Tractors and machinery for agriculture and forestry”. This European Standard shall be given the status of a national standard, either by publication of an iden
19、tical text or by endorsement, at the latest by December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports e
20、ssential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard. The Annex A is normative and contains the “List of hazards”. According to the CEN/CENELEC Internal Regulations, the national standards organizations
21、of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 0Intro
22、duction3 1Scope3 2Normative References3 3Definitions4 4Safety requirements7 4.1General7 4.2Vibration7 4.3Noise emission7 4.4Exhaust system8 4.5Handles8 4.6Barrier8 4.7Throttle control8 4.8Clutch9 4.9Engine stopping device9 Page 4.10 Harness9 4.11 Balance9 4.12 Cutting attachment strength9 4.13 Reten
23、tion of cutting attachment10 4.14 Guards for cutting attachment10 4.15 Distance to cutting attachment10 4.16 Fuel tank10 4.17 Protection against contact with hot parts11 4.18 Starting device11 4.19 Protection against contact with parts under high voltage11 5Verification of safety requirements11 6Inf
24、ormation for use12 6.1General12 6.2Technical data13 6.3Instruction handbook14 6.4Marking15 Annex A (normative) List of hazards16 Annex B (normative) Cutting attachment impact test19 Annex C (normative) Thrown objects test20 Annex D (normative) Dimensions24 Annex ZA (informative) Clauses of this Euro
25、pean Standard addressing essential requirements or other provisions of EU DirectivesInside back cover Figure 1 Brush cutter4 Figure 2 Grass trimmer5 Figure 3 Test cone11 Figure B.1 Impact test19 Figure C.1 Test stand21 Figure C.2 Location of brush cutter22 Figure C.3 Test probe23 Figure D.1 Minimum
26、horizontal distance from suspension point to cutting attachment24 Figure D.2 Brush saw, where the handle assembly serves as the barrier and barrier minimum projection to the operator side from the shaft tube25 Figure D.3 Handle distance L26 Table 1 Achievable vibration values7 Table 2 Achievable sou
27、nd pressure values7 Table 3 Safety requirements and testing method12 Table A.1 List of hazards16 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11806:1997 BSI 03-19993 0 Introduction The extent to which hazards are covered is indicat
28、ed in the scope of this standard. In addition, machinery shall comply as appropriate with EN 292 for hazards which are not covered by this standard. This European Standard covers brush cutters as well as grass trimmers, because the design of both machines is basically identical. Frequently one and t
29、he same unit can be either a brush cutter or a grass trimmer, depending on what type of cutting attachment is used. As grass trimmers are often used in forestry, the relevant requirements have been included in this standard. 1 Scope This European Standard specifies safety requirements and their veri
30、fication for design and construction of portable hand-held, combustion engine driven brush cutters and grass trimmers. This standard is not applicable to backpack powered units, to lawn edge trimmers or to brush cutters equipped with metalic blades consisting of more than one part. It describes meth
31、ods for the elimination or reduction of risks arising from their use. In addition it specifies the type of information on safe working practices to be provided by the manufacturer. It does not however give any technical requirement to reduce noise and vibration hazards. Indeed the different means av
32、ailable to reduce these risks are a matter for the technical information to which the manufacturer may resort, through specialised books or specific bodies. The list of significant hazards dealt with is given in Annex A. Annex A also indicates the hazards which have not been dealt with. Environmenta
33、l aspects have not been considered in this standard. This European Standard applies primarily to machines which are manufactured after the date of issue of the standard. 2 Normative References This European Standard incorporates by dated or undated references, provisions from other publications. The
34、se normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undat
35、ed references the latest edition of the publication referred to apply. EN 292-1:1991, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology. EN 292-2:1991, Safety of machinery Basic concepts, general principles for design Part 2: Technical principle
36、s and specifications. EN 292-2:1991/A1:1995, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles and specifications. EN 563:1994, Safety of machinery Temperatures of touchable surfaces Ergonomics data to establish temperature limit values for hot surfaces.
37、EN 27917:1991, Acoustics Measurement at the operators position of airborne noise emitted by brush saws. ISO 7112:1982, Machinery for forestry Portable brush saws Vocabulary. ISO 7113:1991, Forestry machinery Portable brush saws Saw blades. ISO 7916:1989, Forestry machinery Portable brush saws Measur
38、ement of hand-transmitted vibration. ISO 7918:1995, Forestry machinery Portable brush cutters and grass trimmers Cutting attachment guard dimensions. ISO 8380:1993, Forestry machinery Portable brush cutters and grass trimmers Cutting attachment guard strength. ISO 8893:1989, Forestry machinery Porta
39、ble brush-saws Engine performance and fuel consumption. ISO 10884:1995, Manually portable brush cutters and grass trimmers with internal combustion engine Determination of sound power levels Engineering method (Grade 2). Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006,
40、 Uncontrolled Copy, (c) BSI EN ISO 11806:1997 4 BSI 03-1999 3 Definitions For the purposes of this European Standard, the following definitions and Figure 1 and Figure 2 apply: 3.1 brush cutter unit fitted with a rotating blade made of metal or plastic intended to cut weed, brush, small trees and si
41、milar vegetation 3.2 brush saw brush cutter fitted with a circular saw blade 3.3 grass trimmer unit fitted with flexible line(s), string(s), or similar non-metallic flexible cutting elements, such as pivoting cutters, intended to be used to cut weed, grass or similar soft vegetation Figure 1 Brush c
42、utter Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11806:1997 BSI 03-19995 3.4 lawn edge trimmer grass trimming machine where the cutting means operate in a plane approximately perpendicular to the ground 3.5 backpack power unit po
43、wer source designed to be mounted on the operators back by means of a support frame 3.6 barrier device attached to the unit, to ensure that the operator maintains a minimum distance from the cutting attachment when the unit is being operated 3.7 blade rotating device with cutting edges, made of rigi
44、d material 3.8 saw blade circular metal blade with peripheral cutting teeth Figure 2 Grass trimmer Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11806:1997 6 BSI 03-1999 3.9 blade retainer mechanism which holds the brush cutter blad
45、e to the driving member 3.10 cutting attachment cutting device such as a blade with its retainer, a cutting head etc. 3.11 dry mass total unit mass without fuel, cutting attachment and guard 3.12 cutting attachment guard device for the purpose of protecting the operator from unintentional contact wi
46、th the cutting attachment and from thrown objects 3.13 transport guard device covering the cutting edges of the blade while the machine is transported or stored in an non operational mode 3.14 handle device fitted to the unit to enable the operator to hold and manoeuvre the unit 3.15 harness adjusta
47、ble strap(s) used to suspend the unit from the operator 3.16 hip pad strap or pad of flexible material attached either to the unit or the harness to cushion the operator from impacts from the unit and to reduce transmission of vibration 3.17 power transmission shaft shaft inside the shaft tube for t
48、ransmitting the power from the engine to the cutting attachment 3.18 shaft tube part of the unit that provides a casing for the power transmission shaft 3.19 silencer device for reducing engine exhaust noise and directing the exhaust gases 3.20 engine stopping device control fitted to the unit which
49、 electrically stops the engine 3.21 suspension point device on the unit to which the harness can be attached 3.22 throttle trigger, throttle control device, usually a lever, activated by the operators hand or finger, for controlling the engine speed Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:46:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11806:1997 BSI 03-19997 3.23 throttle lock device for temporarily setting the throttle in a partiall