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1、4851703 0595079 L T I N TE R NAT I O NA L STANDARD IS0 1051 8 First edition 199 164-1 5 corrected and reprlnted I$91-12-15 Powered walk-behind and hand-held lawn trimmers and lawn edge trimmers - Mechanical safety requirements and test methods Coupe-bordures et coupe-gazon portables la main et condu
2、cteur A pied - Prescriptions de scurit mcanique et mthodes dessai Reference number IS0 1051 8:1991 (E) COPYRIGHT International Organization for Standardization Licensed by Information Handling Services COPYRIGHT International Organization for Standardization Licensed by Information Handling Services
3、 W 4851903 0595080 901 IS0 1 051 8 1 991 (E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodles (IS0 member bodies). The work of preparing International Standards is normally carried out through IC0 technical committees. Each memb
4、er body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organlzationc, govern- mental and non-governmental, in liaison with CO, also take part in the work. IC0 collaborates closely with the International El
5、ectrotechnical Commlsslon (iEC) on all matters of electrotechnical stsndardizatlon. Draft International Standards adopted by the technical committees are clrculated to the member bodies for voting. Publication as an Inter- national Standard requlres approval by at least 75% of the member bodies cast
6、ing a vote. International Standard IS0 10518 was prepared by Technical Committee ISO/TC 23, Tractors and machlnery for agriculture and forestry, Sub- Committee SC 13, Powered lawn and garden equipment. Annex A forms an Integral pari of this International Standard. cg IS0 1991 All rlghts reserved. No
7、 part of thls publlcatlon may be reproduced or utlllzed In any form or by any means, electronic or rnechanlcal, Includlng photocopylng and mlcrofllm, wlthout permlslon In writing rorn the publlsher. lnternatlonal Organlzatlon for Standardlzatlon Case Postale 56 CH-1214 Genve 20 Swltzerland Printed I
8、n Swltzerland II COPYRIGHT International Organization for Standardization Licensed by Information Handling Services COPYRIGHT International Organization for Standardization Licensed by Information Handling Services INTERNATIONAL STANDARD IS0 1051 81 991 (E) Powered walk-behind and hand-held lawn tri
9、mmers and lawn edge trimmers - Mechanical safety requirements and test methods 1 Scope This International Standard specifies mechanical safety requirements and test methods applicable to powered walk-behind and hand-held lawn trimmers and lawn edge trimmers, with cutting element(s) of non-metallic f
10、ilament line or freely pivoting non- metallic cutter(s) with a kinetic energy o f not more than 10 J each, used by a standing operator primarily for cutting grass. It does not apply to ccissor-type or rigld-bladed lawn trimmers or lawn edge trimmers. The electrical aspects of electrically powered la
11、wn trimmers and lawn edge trimmers having a voltage exceeding 42 V d.c. or mains-connected are not covered by this I nte rnation a I Standard. 2 Normative references The following standards contain provisions which, through reference in this text, constltute provisions of this International Standard
12、. At the time of publi- cation, the editions indicated were valid. All stan- dards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of ap- plying the most recent editions of the standards in- dicated below. Members
13、of IEC and IS0 maintain registers of currently valid International Standards. IS0 5395:1990, Power lawn-mowers, lawn tractors, lawn and garden tractors, professional mowers, and lawn and garden tractors with mowing attachments - Definitions, safety requirements and lest pro- cedures. IEC 335-1;1976,
14、 Safety of household and similar elec- trical appliances - Part 1: General requrements. 3 DefinitIons For the purposes o f this International Standard. the followlng definitions apply. 3.1 hand-held: Supported by hand, posslbiy as- sisted by wheel), skids or harness, etc. 3.2 walk-behind: Normally c
15、ontrolled by an oper- ator walklng behind a ground-supported unit. 3.3 lawn trimmer: Grass-cutting machine where the cutting means operates In a plane approximately parallel to the ground. 3.4 lawn edge trimmer: Grass-cutting machlne for trimming lawn edges where the cutting means op- erates In a pl
16、ane approximately perpendicular to the ground. 3.5 cutting means: Mechanism used to provide the cutting action In which one or more cutting el- ements, cutting by Impact, rotate about .an axis normal to the cutting plane. 3.6 cutting element: Single non-metallic filament line or freely pivoting non-
17、metallic cutter. 3.7 drlve unit: System whlch supports and p.owers the cutting means. 4 General construction 4.1 Handling . The machlne shall be capable of normal use by an operator wearing gloves. Any harness provided shall be o f the quick-release type to ensure that the equlpment can be quickly d
18、etached by the operator in an emergency. 1 COPYRIGHT International Organization for Standardization Licensed by Information Handling Services COPYRIGHT International Organization for Standardization Licensed by Information Handling Services IS0 105181991(E) Hand-held lawn trimmers and lawn edge trim
19、mers, or the hand-held parts of such machines, with a mass of more than 5 kg shall have two handles. The distance between the centre of the two handles shall be at least 250mm, when measured along the length of the handle support shaft. This measure- ment does not apply to two-handled lawn trimmers
20、welghlng 5 kg or less. The machine mass is deter- mined with all accessories fitted and either with any tanks needed for operation half-full, or with 1 m of supply cable, as appropriate. The gripping width of any handle required by this International Standard shall be at least 100 mm. correcting the
21、 observed temperature by the differ- ence between the specified ambient and the test ambient temperature. 4.3.3 Test acceptance for exhaust surfaces The tip or conical surface of the cone shown in fig- ure 1 shall not make contact with a hot surface of the exhaust system greater than 10 cm2 with a t
22、em- perature greater than 80 T. Dlrnenslons in mllllmetres 4.2 Power-driven components (other than cuttlng means) Power-driven gears, chains, sprockets, belts, friction drives, pulleys, fans, fan wheels and other moving parts whenever they create a pinch polnt capable of causing injury, durlng norma
23、l starting and oper- ating of the machine, shall be so positioned or guarded by shields or similar attachments as to prevent accidental contact with these components. Drive-shafts shall be fully guarded. The prlnclples set out fn annex A of IS0 5395:1990 shall be followed when developing a guarding
24、sys- tem. The requirements of 4.2 do not apply to - any part of a component functioning in contact with the soil; - any axle of a ground wheel. 4.3 Heat protection 4.3.1 Temperature Ilmits of exposed parts A guard or shield shall be provided to prevent inad- vertent contact wlth any exposed engine e
25、xhaust component, greater than I O cm2 and with a hot sur- face greater than 80 OC, during normal starting and operation of the machine. Handles and permanently held controls shall not exceed 45 O C : other controls and surfaces which may be touched during normal operation shall not exceed 55 O C .
26、. 4.3.2 Test method The test shall be conducted in the shade. The engine shall be operated at its maximum no-load speed until the temperatures stabilize. All measurements shall be referred to an ambient temperature of 20 O C f 3 T. Temperatures shall be determined by Figure 1 - Test cone (see 4.3.3)
27、 4.4 Guard attachment Ail guards or shields required under 4.2 and 4.3 shall be either permanently attached, or secured to prevent removal without the use of tools, or the construction o f the machine shall be such that it cannot be used without the guard in its guarding positlon, 4.5 Protection fro
28、m exhaust fumes Engine exhausts shall be directed away from the operator. 4.6 Electrical requirements 4.6.1 Battery clrcuits These electrical requirements apply only to battery clrcufts of less than 42 V. For the electrical requlre- ments for malns-connected eiiectrlcally driven ma- chines, referenc
29、e shall be made to IEC- 335-1. 4.6.1.1 Electrlcal cables Electrical cables shall be protected, or not located near any hot surfaces or in potentially abrasive contact wlth metal surfaces. 2 COPYRIGHT International Organization for Standardization Licensed by Information Handling Services COPYRIGHT I
30、nternational Organization for Standardization Licensed by Information Handling Services 9 Y851703 0595083 610 = The wiring assembly shall, where possible, be grouped together, be properly supported and be lo- cated so that no portion is near the exhaust system or in contact with the carburettor, met
31、allic fuel lines, moving paris or sharp edges. Any edges of metal members likely to be In contact with the cables shall be rounded or protected to prevent possible damage to the cables by cutting or abrasion. 4.6.1.2 Battery installation The compartment for a vented storage battery shall have openin
32、gs to provide ventilation and drainage. When the battery is in the operating position, electrolyte shall not leak onto parts that would be critically affected to the extent that a hazard would be created from corrosion. 4.6.1.3 Overload protection All circuits, except starter-motor and high-voltage
33、Ignition circuits, shall be provided with overload protection devices in the ungrounded line near the battery terminal or starter cable. The overload pro- tection may be located in either wire of a two-wire system. This requirement shall not, however, apply to battery-powered machines capable of pas
34、sing the followlng test. With the motor shaft locked to prevent rotation, connect it to its fully charged integral battery and leave it in that condition until the battery is dis- charged or failure of any component takes place. The machine shall not emit flames or molten metal. Any internal explosi
35、on shall be contained so as not to cause any material to be ejected from the ma- chine. 4.6.1.4 Termlnals and unlnsulated electrical parts Terminals and uninsulated electrical parts and two- wire non-grounded systems shall be protected against short-circuitlng by the fuel can, o r tools, during norm
36、al refuelling and lubrication servicing. 4.6.2 ignition circuits 4.6.2.1 Ignition Interruption or short-circuiting shall be provided and shall be fitted on the low-voltage side. 4.6.2.2 All high-voltage parts of the circuit including spark-plug terminals shall be protected or Insuiated in such a man
37、ner that the operator cannot make accidental contact with them. IS0 10518:1991(E) 4.7 Engine stopplng and startlng 4.7.1 A shut-off control device shall be provided on all battery-powered unlts and engine-powered unlts with battery starters to stop the engine (motor)Thls device shall require manual
38、and intentional acti- vation in order to restart the engine and shall be accessible from the starting and operating positions. 4.7.2 On internal combustlon engine driven ma- chfnes, a means shall be provided to stop the en- gine. The stopplng device shall not depend on sustalned manual pressure. For
39、 those machines which have a harness, the stop control shall be In the handle area. 4.8 Controls 4.8.1 Requirement For electrically powered machines, a control shall be provlded and this shall require two separate and dissimilar actions before the cutting elements can be driven. There shall be no me
40、ans of locking thls control in the “on“ position and the movement of the cuttlng element shall stop when the control is re- leased. For internai combustion engine powered machlnes, the throttle trigger shall be operable without taking the hand off the handle. The throttle trigger shall return to the
41、 engine idle posltion after release. A throttle lock-on (if required for engine starting) shall automatically disengage when the throttle trigger is activated. 4.8.2 Identification of controls Controls, other than those whose purpose Is obvl- ous. shall have the function, dlrectlon and method of ope
42、ration clearly identified wfth durable marking. Easily understood detailed instructions on the oper- ation of all controls shall be provided In an oper- ators manual. 5 Marking 5.1 General 5.1.1 Every machine shall be marked ta identify the manufacturer, model number andlor serial number together wi
43、th appropriate warnings (e.g. fuel type and mixture, recommendation to wear ear pro- tection, dlctance warning for bystanders, read the owners manual, etc., as may be necessary). 5.1.2 Every machine shall be prominently marked with the warning “Wear eye protection“ or with the appropriate IS0 symbol
44、. 3 COPYRIGHT International Organization for Standardization Licensed by Information Handling Services COPYRIGHT International Organization for Standardization Licensed by Information Handling Services 4853903 0595084 557 IS0 1 O51 81 991 (E) 5.1.3 If the drive unit is designed to be replaceable or
45、interchangeable, it shall be marked with the manufacturers identlfication. 5.1.4 Every lawn trimmer guarded in accordance with 8.1 only shall be permanently marked with a warning, “Do not use for lawn edge trImmlng”. 5.1.5 Marking shall be legible and durable (see 5 . 3 ) . 5.2 Labels 5.2.1 Labels p
46、rovided for identification, and direc- tional and cautionary informatlon shall have a reasonable life for the anticipated machine operat- ing environment and satisfy the following requlre- ments: the label shall have a durable bond with the base surface material; the label shall be weather-resistant
47、 and under normal cleaning procedures shall not fade, dis- colour, crack or blister, and shall remain legible; the label shall not curl at the edges and legibility shall not be affected by spilled petrol or oll; the label, other than those on electrical ma- chines, shall withstand high-pressure cold
48、 water cleaning. See 5.3 for the test method. 5.2.2 Labels giving cautionary Information shall be located close to the relevant hazard. Such labels shall be In the official language(s) of the country in whlch the lawn trlrnmer is sold. Appropriate IS0 symbols may be used. 5.3 Test method The marking
49、 shall be rubbed by hand for 15 s with a piece of cloth soaked with water and again for 15 s with a piece of cloth soaked with petrol. ARer the test, the marking shall be easily legible; it shall not be easily possible to remove any labels and they shall show no curling. 6 Instructions instructions for correct assembly, safe operation and maintenance shall be provided glving information on at least the following: a) requirement to wear eye protection; b) identification of correct fuel or fuei/oiI mixture to be used; correct and safe operation and limitations of use; meth
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