1、BS ISO 7112:2017Machinery for forestry Portable brush-cutters andgrass-trimmers VocabularyBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 7112:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 7112:2017. It supersedes
2、BS ISO 7112:2008 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee AGE/29, Forestry machinery.A list of organizations represented on this committee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
3、 provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 91742 4 ICS 01.040.65; 65.060.80 Compliance with a British Standard cannot confer immunity from legal obligations.This British St
4、andard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 7112:2017 ISO 2017Machinery for forestry Portable brush-cutters and grass-trimmers VocabularyMatriel forestier D
5、broussailleuses et coupe-herbe portatifs VocabulaireINTERNATIONAL STANDARDISO7112Fourth edition 2017-02Reference numberISO 7112:2017(E)BS ISO 7112:2017ISO 7112:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise s
6、pecified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below o
7、r ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 7112:2017ISO 7112:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitio
8、ns . 1Annex A (informative) Brush-cutter position . 6Bibliography 7 ISO 2017 All rights reserved iiiContents PageBS ISO 7112:2017ISO 7112:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pr
9、eparing 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, i
10、n liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IE
11、C Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility t
12、hat 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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent
13、declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as informati
14、on about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 17,
15、 Manually portable forest machinery.This fourth edition cancels and replaces the third edition (ISO 7112:2008), which has been technically revised, with the following main changes: terms and definitions 3.1.4, 3.3.1.1, 3.3.1.3, 3.4.3 and 3.5.5 have been added.iv ISO 2017 All rights reservedBS ISO 71
16、12:2017INTERNATIONAL STANDARD ISO 7112:2017(E)Machinery for forestry Portable brush-cutters and grass-trimmers Vocabulary1 ScopeThis document defines terms relating to portable hand-held brush-cutters and grass-trimmers, their cutting attachments and power sources.The brush-cutter position is shown
17、in Annex A.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedi
18、a: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1 Work functions3.1.1fellingseparation of a standing tree from its root system3.1.2shreddingreduction of bushes, small trees and other growing organic materials to smaller pieces3.1.3trimmin
19、gcutting of weeds, grass and other similar soft vegetation3.1.4cutting means thrustsudden and uncontrolled motion towards the operators side or rear that can occur when the rotating cutting means (3.3.1.1) comes in contact with a solid object3.2 Machine types3.2.1brush-cutterunit using a rotating cu
20、tting means (3.3.1.1) made of metal or plastics, intended to cut weed, scrub, brush-wood, and similar vegetation3.2.2brush sawbrush-cutter (3.2.1) fitted with a circular saw blade (3.3.1.1) intended to cut small trees and saplings ISO 2017 All rights reserved 1BS ISO 7112:2017ISO 7112:2017(E)3.2.3gr
21、ass-trimmerunit using flexible non-metallic line(s) string(s) or similar non-metallic flexible cutting elements, such as pivoting cutters, intended to cut weed, grass or similar soft vegetation3.2.4lawn-trimmerelectric powered grass-cutting machine with a non-metallic, non-rigid cutting attachment (
22、3.3.1), of a cutting capacity (kinetic energy) of not more than 10 J, operating in a plane parallel to the ground3.2.5lawn edge-trimmerpowered grass-trimming machine where the cutting attachment (3.3.1) operates in a plane approximately perpendicular to the ground3.3 Cutting equipment3.3.1cutting at
23、tachmentcutting device such as a cutting means, saw blade or a flexible cutting means3.3.1.1cutting meansrotating device with cutting edges, designed to cut weed, brush, scrub and similar vegetation3.3.1.2saw bladerotating circular metal blade with peripheral cutting teeth, designed to cut wood, suc
24、h as small trees and saplings, by continuously removing material3.3.1.3flexible cutting meansnon-metallic rotating cutting means (3.3.1.1) using flexible line(s), string(s) or pivoting cutting elements3.4 Safety devices3.4.1cutting means retainersaw blade retainerretainermechanism which holds the cu
25、tting means (3.3.1.1) or saw blade (3.3.1.2) to the driving member3.4.2cutting attachment guarddevice intended to protect the operator from unintentional contact with the cutting attachment (3.3.1) and from thrown objects3.4.3cutting means covertransport covermanually removable device covering the c
26、utting edges of the cutting means (3.3.1.1) or saw blade (3.3.1.1) during transportation or storage3.4.4quick-release mechanismdevice enabling the operator to free himself quickly from the unit in case of emergency2 ISO 2017 All rights reservedBS ISO 7112:2017ISO 7112:2017(E)3.4.5barrierdevice attac
27、hed to the unit, designed to maintain a minimum distance between the operator and the cutting attachment (3.3.1) when the unit is being operated3.4.6harnessadjustable equipment by which the unit is suspended from the operator3.4.7hip padflexible material attached to the unit or the harness (3.4.6),
28、to cushion the operator from impact from the unit and to reduce the transmission of vibrations3.4.8suspension pointpart of the machine to which the harness (3.4.6) can be attachedNote 1 to entry: See Annex A.3.4.9throttle trigger lockoutdevice that prevents operation of the throttle trigger (3.5.6)
29、without intentional manual intervention3.5 Control system3.5.1chokedevice for enriching the fuel/air mixture in the carburettor to aid starting3.5.2stop switchdevice which initiates the stopping of the power source3.5.3starterdevice that rotates the engine crank shaft for starting3.5.3.1recoil start
30、erdevice for starting the engine by pulling a rewind rope which automatically rewinds when released3.5.3.2electric starterdevice that rotates the engine crank shaft using external power, such as battery or mains, for starting3.5.4primerdevice for supplying fuel to the pump of the carburettor to aid
31、starting3.5.5throttle control latchdevice to temporarily set the throttle in a partially open position to aid in starting3.5.6throttle triggerdevice, usually a lever, activated by the operators hand or finger, for controlling the engine speed and/or power ISO 2017 All rights reserved 3BS ISO 7112:20
32、17ISO 7112:2017(E)3.5.7throttle linkagedevice that transmits motion from the throttle trigger (3.5.6) to the throttle3.5.8decompression valvedevice for lowering the compression in the cylinder to aid starting3.6 Carburettor setting3.6.1idle-speed adjusterTdevice, normally a screw, acting on the thro
33、ttle, for adjusting the idling speed (3.9.8)3.6.2low-speed mixture adjusterLdevice, normally a screw, for adjusting the fuel delivery at idling/low speed3.6.3high-speed mixture adjusterHdevice, normally a screw, for adjusting the fuel delivery at full throttle3.7 Handles3.7.1handlesupport device fit
34、ted to the unit to enable the operator to hold and manipulate the unit3.7.2handgripsurface or structure specifically designed for the operators hand to grasp to enable manoeuvring of the backpack power unit (3.5.6)3.8 Exhaust system3.8.1exhaust systempart(s) used to contain and direct gas from the c
35、ylinder exhaust port to the atmosphere, including all directly attached shields for hot surface contact prevention3.8.1.1mufflersilencerdevice for reducing engine exhaust noise and directing the exhaust gases3.8.1.2spark arresterdevice through which the exhaust gases pass, intended to stop smoulderi
36、ng/burning particles3.9 Miscellaneous3.9.1angle transmissiondevice for transmitting the power from the power transmission shaft (3.9.4) to the cutting attachment (3.3.1)4 ISO 2017 All rights reservedBS ISO 7112:2017ISO 7112:2017(E)3.9.2backpack power unitpower source which is designed to be carried
37、on the operators body by means of a supporting device3.9.3clutchdevice for connecting and disconnecting a driven member to and from a rotating source of power3.9.4power transmission shaftshaft inside the shaft tube (3.9.6) for transmitting power from the engine to the angle transmission (3.9.1) or c
38、utting attachment (3.3.1)3.9.5output shaftshaft to which the cutting attachment (3.3.1) is connected3.9.6shaft tubepart of the machine that provides a casing for the power transmission shaft (3.9.4)3.9.7governordevice that limits the maximum engine speed3.9.8idling speedengine speed at which the cut
39、ting attachment (3.3.1) does not moveNote 1 to entry: A range of idling speeds is normally identified by the machine manufacturer and stated in the instruction handbook.3.9.9maximum power speedfull-load speedengine speed at which maximum corrected brake power is obtainedNote 1 to entry: The maximum
40、power speed is obtained in accordance with ISO 88931.3.9.10racing speedmaximum engine speed achieved at full open throttle or the engine speed at 133 % of the maximum power speed (3.9.9), whichever is lesser3.9.11dry mass/weighttotal unit mass/weight without fuel, and cutting attachment (3.3.1) or h
41、arness (3.4.6) ISO 2017 All rights reserved 5BS ISO 7112:2017ISO 7112:2017(E)Annex A (informative) Brush-cutter positionSee Figure A.1.Key1 suspension point (eyelet)2 front3 rear4 ground5 right-hand side6 left-hand sideFigure A.1 Brush-cutter position6 ISO 2017 All rights reservedBS ISO 7112:2017ISO
42、 7112:2017(E)Bibliography1 ISO 8893, Forestry machinery Portable brush-cutters and grass-trimmers Engine performance and fuel consumption ISO 2017 All rights reserved 7BS ISO 7112:2017ISO 7112:2017(E) ISO 2017 All rights reservedICS 65.060.80; 01.040.65Price group AThis page deliberately left blankB
43、SI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)
44、About usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consult
45、ation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting ou
46、r Customer Services team or Knowledge Centre.Buying standardsYou can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at where hard copies can also be purchased. If you need international and foreign standards
47、 from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.Copyright in BSI publicationsAll the content in BSI publications, including British Standards, is the property of and copyrighted by BSI or some person or entity that owns copyright in the inf
48、ormation used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use.Save for the provisions below, you may not transfer, share or disseminate any portion of the standard to any other person. You may not adapt, distribu
49、te, commercially exploit, or publicly display the standard or any portion thereof in any manner whatsoever without BSIs prior written consent.Storing and using standardsStandards purchased in soft copy format: A British Standard purchased in soft copy format is licensed to a sole named user for personal or internal company use only. The standard may be stored on more than 1 device provided that it is accessible by the sole named user only and that only 1 copy is access
