1、BS ISO 7112:2017 Machinery for forestry Portable brush-cutters and grass-trimmers Vocabulary BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 7112:2017 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 7112:2017. It super
2、sedes BS ISO 7112:2008 which is withdrawn.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
3、necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017. Published by BSI Standards Limited 2017 ISBN 978 0 580 91742 4 ICS 01.040.65; 65.060.80 Compliance with a British Standard cannot confer immunity from legal obligations. Thi
4、s British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO 7112:2017 ISO 2017 Machinery for forestry Portable brush-cutters and grass-trimmers Vocabulary Mat
5、riel forestier Dbroussailleuses et coupe-herbe portatifs Vocabulaire INTERNATIONAL STANDARD ISO 7112 Fourth edition 2017-02 Reference number ISO 7112:2017(E)BS ISO 7112:2017ISO 7112:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights rese
6、rved. Unless otherwise specified, 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 IS
7、O at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 7112:2017ISO 7112:2017(E)Foreword iv 1 Scope . 1 2 Normative
8、references 1 3 T erms and definitions . 1 Annex A (informative) Brush-cutter position . 6 Bibliography 7 ISO 2017 All rights reserved iii Contents PageBS ISO 7112:2017ISO 7112:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bo
9、dies (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 be represented on that committee. International organizatio
10、ns, 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. The procedures used to develop this document and those intended for its furthe
11、r maintenance are described in the ISO/IEC 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
12、). 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. Details of any patent rights identified during the development of the document will be in the Intr
13、oduction and/or on the ISO list of patent 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
14、 conformit y assessment, as well as information 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
15、 agriculture and forestry, Subcommittee SC 17, 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
16、 added.iv ISO 2017 All rights reservedBS ISO 7112:2017INTERNATIONAL ST ANDARD ISO 7112:2017(E) Machinery for forestry Portable brush-cutters and grass-trimmers Vocabulary 1 Scope This document defines terms relating to portable hand-held brush-cutters and grass-trimmers, their cutting attachments an
17、d power sources. The brush-cutter position is shown in Annex A. 2 Normative references There are no normative references in this document. 3 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in
18、 standardization at the following addresses: IEC Electropedia: available at http:/ /www.electropedia.org/ ISO Online browsing platform: available at http:/ /www.iso.org/obp 3.1 Work functions 3.1.1 felling separation of a standing tree from its root system 3.1.2 shredding reduction of bushes, small
19、trees and other growing organic materials to smaller pieces 3.1.3 trimming cutting of weeds, grass and other similar soft vegetation 3.1.4 cutting means thrust sudden and uncontrolled motion towards the operators side or rear that can occur when the rotating cutting means (3.3.1.1) comes in contact
20、with a solid object 3.2 Machine types 3.2.1 brush-cutter unit using a rotating cutting means (3.3.1.1) made of metal or plastics, intended to cut weed, scrub, brush-wood, and similar vegetation 3.2.2 brush saw brush-cutter (3.2.1) fitted with a circular saw blade (3.3.1.1) intended to cut small tree
21、s and saplings ISO 2017 All rights reserved 1BS ISO 7112:2017ISO 7112:2017(E) 3.2.3 grass-trimmer unit 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 vegetation 3.2.4 lawn-trimmer
22、electric powered grass-cutting machine with a non-metallic, non-rigid cutting attachment (3.3.1), of a cutting capacity (kinetic energy) of not more than 10 J, operating in a plane parallel to the ground 3.2.5 lawn edge-trimmer powered grass-trimming machine where the cutting attachment (3.3.1) oper
23、ates in a plane approximately perpendicular to the ground 3.3 Cutting equipment 3.3.1 cutting attachment cutting device such as a cutting means, saw blade or a flexible cutting means 3.3.1.1 cutting means rotating device with cutting edges, designed to cut weed, brush, scrub and similar vegetation 3
24、.3.1.2 saw blade rotating circular metal blade with peripheral cutting teeth, designed to cut wood, such as small trees and saplings, by continuously removing material 3.3.1.3 f l e x i b l e c u t t i n g m e a n s non-metallic rotating cutting means (3.3.1.1) using flexible line(s), string(s) or p
25、ivoting cutting elements 3.4 Safety devices 3.4.1 cutting means retainer saw blade retainer retainer mechanism which holds the cutting means (3.3.1.1) or saw blade (3.3.1.2) to the driving member 3.4.2 cutting attachment guard device intended to protect the operator from unintentional contact with t
26、he cutting attachment (3.3.1) and from thrown objects 3.4.3 cutting means cover transport cover manually removable device covering the cutting edges of the cutting means (3.3.1.1) or saw blade (3.3.1.1) during transportation or storage 3.4.4 quick-release mechanism device enabling the operator to fr
27、ee himself quickly from the unit in case of emergency2 ISO 2017 All rights reservedBS ISO 7112:2017ISO 7112:2017(E) 3.4.5 barrier device attached to the unit, designed to maintain a minimum distance between the operator and the cutting attachment (3.3.1) when the unit is being operated 3.4.6 harness
28、 adjustable equipment by which the unit is suspended from the operator 3.4.7 hip pad flexible material attached to the unit or the harness (3.4.6), to cushion the operator from impact from the unit and to reduce the transmission of vibrations 3.4.8 suspension point part of the machine to which the h
29、arness (3.4.6) can be attached Note 1 to entry: See Annex A. 3.4.9 throttle trigger lockout device that prevents operation of the throttle trigger (3.5.6) without intentional manual intervention 3.5 Control system 3.5.1 choke device for enriching the fuel/air mixture in the carburettor to aid starti
30、ng 3.5.2 stop switch device which initiates the stopping of the power source 3.5.3 starter device that rotates the engine crank shaft for starting 3.5.3.1 recoil starter device for starting the engine by pulling a rewind rope which automatically rewinds when released 3.5.3.2 electric starter device
31、that rotates the engine crank shaft using external power, such as battery or mains, for starting 3.5.4 primer device for supplying fuel to the pump of the carburettor to aid starting 3.5.5 throttle control latch device to temporarily set the throttle in a partially open position to aid in starting 3
32、.5.6 throttle trigger device, 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 7112:2017ISO 7112:2017(E) 3.5.7 throttle linkage device that transmits motion from the throttle trigger (3.5.6) to the throttle
33、 3.5.8 decompression valve device for lowering the compression in the cylinder to aid starting 3.6 Carburettor setting 3.6.1 idle-speed adjuster T device, normally a screw, acting on the throttle, for adjusting the idling speed (3.9.8) 3.6.2 low-speed mixture adjuster L device, normally a screw, for
34、 adjusting the fuel delivery at idling/low speed 3.6.3 high-speed mixture adjuster H device, normally a screw, for adjusting the fuel delivery at full throttle 3.7 Handles 3.7.1 handle support device fitted to the unit to enable the operator to hold and manipulate the unit 3.7.2 handgrip surface or
35、structure specifically designed for the operators hand to grasp to enable manoeuvring of the backpack power unit (3.5.6) 3.8 Exhaust system 3.8.1 exhaust system part(s) used to contain and direct gas from the cylinder exhaust port to the atmosphere, including all directly attached shields for hot su
36、rface contact prevention 3.8.1.1 mu f f l e r silencer device for reducing engine exhaust noise and directing the exhaust gases 3.8.1.2 spark arrester device through which the exhaust gases pass, intended to stop smouldering/burning particles 3.9 Miscellaneous 3.9.1 angle transmission device for tra
37、nsmitting 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) 3.9.2 backpack power unit power source which is designed to be carried on the operators body by means of a supporting device 3.9.3 clutch devi
38、ce for connecting and disconnecting a driven member to and from a rotating source of power 3.9.4 power transmission shaft shaft inside the shaft tube (3.9.6) for transmitting power from the engine to the angle transmission (3.9.1) or cutting attachment (3.3.1) 3.9.5 output shaft shaft to which the c
39、utting attachment (3.3.1) is connected 3.9.6 shaft tube part of the machine that provides a casing for the power transmission shaft (3.9.4) 3.9.7 governor device that limits the maximum engine speed 3.9.8 idling speed engine speed at which the cutting attachment (3.3.1) does not move Note 1 to entry
40、: A range of idling speeds is normally identified by the machine manufacturer and stated in the instruction handbook. 3.9.9 maximum power speed full-load speed engine speed at which maximum corrected brake power is obtained Note 1 to entry: The maximum power speed is obtained in accordance with ISO
41、8893 1 . 3.9.10 racing speed maximum engine speed achieved at full open throttle or the engine speed at 133 % of the maximum power speed (3.9.9), whichever is lesser 3.9.11 dry mass/weight total unit mass/weight without fuel, and cutting attachment (3.3.1) or harness (3.4.6) ISO 2017 All rights rese
42、rved 5BS ISO 7112:2017ISO 7112:2017(E) Annex A (informative) Brush-cutter position See Figure A.1. Key 1 suspension point (eyelet) 2 front 3 rear 4 ground 5 right-hand side 6 left-hand side Figure A.1 Brush-cutter position6 ISO 2017 All rights reservedBS ISO 7112:2017ISO 7112:2017(E) Bibliography 1
43、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 reserved IC S 65.060.80; 01.040.65 Price group AThis page deliberately left blankBSI is the national body
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