1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 3450:2011Earth-moving machinery Wheeled or high-speedrubber-tracked machines Performance requirementsand test procedures for brakesystems (ISO 3450:2011)BS EN ISO 3450:
2、2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 3450:2011.It supersedes BS EN ISO 3450:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/513/1, Earth moving machinery (International).A list of organiza
3、tions represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 58268 4ICS 53.100Compliance with a British Standard cannot c
4、onfer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3450 November 2011 ICS 53.100 S
5、upersedes EN ISO 3450:2008English Version Earth-moving machinery - Wheeled or high-speed rubber-tracked machines - Performance requirements and test procedures for brake systems (ISO 3450:2011) Engins de terrassement - Engins sur pneumatiques ou sur chenilles caoutchouc grande vitesse - Exigences de
6、 performance et modes opratoires dessai des systmes de freinage (ISO 3450:2011) Erdbaumaschinen - Maschinen auf Rdern oder schnelllaufende gummigleiskettenbereifte Maschinen - Anforderungen und Prfungen fr Bremssysteme (ISO 3450:2011) This European Standard was approved by CEN on 15 October 2011. CE
7、N 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 app
8、lication 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 M
9、anagement 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, Net
10、herlands, 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 exploitatio
11、n in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3450:2011: EBS EN ISO 3450:2011EN ISO 3450:2011 (E) 3 Foreword This document (EN ISO 3450:2011) has been prepared by Technical Committee ISO/TC 127 “Earth-moving machinery“ in collaboration with Technical Com
12、mittee CEN/TC 151 “Construction equipment and building material machines - Safety” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2012, and conflictin
13、g national standards shall be withdrawn at the latest by May 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 patent rights. This document super
14、sedes EN ISO 3450:2008. 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(s). For relationship with EU Directive, see informative Annex ZA, which is an integral part of
15、this document. 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, I
16、celand, Ireland, 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 3450:2011 has been approved by CEN as a EN ISO 3450:2011 without any modification. B
17、S EN ISO 3450:2011EN ISO 3450:2011 (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 Associati
18、on 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, complian
19、ce 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
20、 product(s) falling within the scope of this Standard. BS EN ISO 3450:2011ISO 3450:2011(E) ISO 2011 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references .13 Terms and definitions .24 General requirements .54.1 Required brake systems 54.2 Common components 64.3 Brake control
21、 systems .64.4 Service brake systems .74.5 Secondary brake systems .74.6 Parking brake systems 74.7 Hydrostatic brake systems .74.8 Systems with combined brake and steer function .84.9 Performance and warning devices for stored energy sources .84.10 Braking systems with electronic MCS .84.11 Machine
22、s designed to tow trailers 94.12 Machine instructions and labels .94.13 Estimating brake slope capability .105 Test conditions .105.1 Overall test parameters .105.2 General test conditions .105.3 Test course 115.4 Machine test configuration .116 Performance tests .126.1 General .126.2 Braking system
23、 controls .126.3 Stored energy sources .126.4 Holding performance 136.5 Stopping performance .146.6 Alternative testing .167 Test report .16Annex A (informative) Braking for purpose-built underground mining machines .18Annex B (informative) Brake slope capability calculation method .23Bibliography .
24、24BS EN ISO 3450:2011ForewordISO (the International Organization for Standardization) 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 s
25、ubject for which a technical committee has been established has the right to 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
26、(IEC) on all matters of electrotechnical standardization.International Standards 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 commit
27、tees are circulated to the member bodies for voting. Publication as an International 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
28、held responsible for identifying any or all such patent rights.ISO 3450 was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety, ergonomics and general requirements.This fourth edition cancels and replaces the third edition (ISO 3450:1996), which has been te
29、chnically revised.ISO 3450:2011(E)iv ISO 2011 All rights reservedBS EN ISO 3450:2011INTERNATIONAL STANDARD ISO 3450:2011(E)Earth-moving machinery Wheeled or high-speed rubber-tracked machines Performance requirements and test procedures for brake systems1 ScopeThis International Standard specifies m
30、inimum performance requirements and test procedures for the service, secondary and parking brake systems of wheeled and high-speed rubber-tracked earth-moving machines, for the uniform assessment of those brake systems.It is applicable to the following earth-moving machinery, operating on work sites
31、 or in mining, or travelling on public roads: self-propelled, rubber-tyred earth-moving machines, as defined in ISO 6165; self-propelled rollers and landfill compactors, as defined in ISO 6165 and ISO 8811; self-propelled scrapers, as defined in ISO 7133; remote-control machines, as defined in ISO 6
32、165, wheeled or rubber-tracked; derivative earth-moving machines with rubber tyres; earth-moving machines with rubber tracks and a maximum machine speed 20 km/h.It is not applicable to pedestrian-controlled earth-moving machinery (see ISO 17063) or crawler earth-moving machines with steel or rubber
33、tracks that travel at 2, X shall be 2 m. This is intended to limit the machine veering outside the required public road traffic lane width.KeyW width of machine over wheels or tracks, mX width of boundary lane, mFigure 1 Boundary conditions for secondary braking4.9 Performance and warning devices fo
34、r stored energy sourcesIf stored energy (e.g. reservoirs, accumulators) is used for the service brake system, the stored energy system shall be equipped with a low-energy warning device. The remaining pressure on the third service brake application after the warning signal shall have sufficient ener
35、gy to provide secondary brake performance in accordance with Table 3, as applicable to the machine.The warning device shall readily attract the operators attention by providing a continuous (e.g. steady or pulsating) visible and/or audible warning. Gauges indicating pressure or vacuum do not meet th
36、is requirement.4.10 Braking systems with electronic MCSThe electronic control system for a braking system shall meet safe state requirements as determined by the manufacturer using a risk assessment methodology. An electronic MCS complying with ISO 15998 meets such safe state requirements.If the max
37、imum machine speed is limited by design to less than 6 km/h, these safe state requirements are fulfilled when any of the braking systems can bring the machine to a stop within the brake stopping distances given Table 3.Braking systems on machines that meet the requirements of this International Stan
38、dard also achieve the safety concept of ISO 15998 for earth-moving machinery braking systems. A risk assessment of the brake MCS needs to be carried out to determine if functional braking after any single failure involving an electrical and/or electronic MCS meets the braking performance requirement
39、s of this International Standard.NOTE ISO 15998 also requires additional testing of the MCS to verify its performance and modes of failure.ISO 3450:2011(E)8 ISO 2011 All rights reservedBS EN ISO 3450:20114.11 Machines designed to tow trailersAll performance requirements given in this International S
40、tandard that apply to the service, secondary and parking brakes of a machine also apply to the combination of a machine and trailer(s).The trailer or trailed unit(s) do not require brakes if the towing machines brakes meet the service, secondary and parking brake requirements when tested with the co
41、mbined machine and trailer mass, including the specified trailer payload.The trailer brakes should be evaluated for protection against jack-knifing, if applicable.4.12 Machine instructions and labels4.12.1 GeneralOperational limitations of the brake control system according to the manufacturers spec
42、ifications, if applicable, shall be included in one or the other of the following: operators manual; instructional sign; machine monitor displays.EXAMPLE Operating precautions for braking system default conditions where the brake or retarding operating characteristics may be automatically changed cr
43、eating new brake performance characteristics such as automatic shift of the transmission to neutral or potential damage to the parking brake due to propelling through the parking brake.If brake burnishing is recommended by the brake or machine manufacturer, the brake burnishing procedure shall be in
44、cluded in the operators or maintenance manual for the machine.The manufacturer of any machine equipped with a retarder shall provide the following instructions:a) in the operators manual, the maximum machine speed and/or the transmission gear to be engaged when the loaded machine descends specific s
45、lopes as specified by the machine manufacturer;b) an instruction sign or machine monitor display containing the information specified in a), located in the operators compartment and readily visible to the operator.Instructional signs or machine monitor displays showing the retarding ability for slop
46、es shall not exceed the minimum brake holding performance of the service and parking brakes as a percentage holding slope (see 6.4.2).4.12.2 Braking system and periodic verification instructionsInformation on brakes may be provided in manuals, labels or other means readily available to the operator
47、while in the operators station along with precautions about the limitation of this information. If braking system and periodic verification instructions are provided by the machine manufacturer, they should include the following:a) daily brake check method instructions: a method for verifying the fu
48、nctionality of the service and parking brakes; provisions for verifying the functionality of the secondary brakes if the service and/or parking brake check method does not verify functionality of the secondary brakes;b) in-service, periodic or post-maintenance brake verification instructions: a meth
49、od for verifying the functionality of the service and parking brakes including acceptance criteria; a means of verifying the functionality of the secondary brakes.ISO 3450:2011(E) ISO 2011 All rights reserved 9BS EN ISO 3450:2011The instructions are to include a notice to the user that the machine is to be immediately taken out of service until corrected if the service, secondary or parking brakes do not operate within specifications or performance requirements as defined by the daily brake check method, in-service, periodic or
