1、BRITISH STANDARD BS 6912-11: 1993 ISO 10533: 1993 Safety of earth-moving machinery Part 11: Requirements for lift arm support devices UDC 621.878.879BS6912-11:1993 This British Standard, having been prepared under the directionofthe Technical Committee B/513, was publishedunder the authority oftheSt
2、andards Board and comesintoeffect on 15 May 1993 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference B/513/1 Draft for comment 92/11313 DC ISBN 0 580 21787 6 Committees responsible for this British Standard The preparation of this British Standard was en
3、trusted by Technical Committee B/513, Construction equipment and plant, and site safety, to Subcommittee B/513/1, Earth-moving machinery, upon which the following bodies were represented: British Coal Corporation Construction Plant (Hire Association) Federation of Civil Engineering Contractors Feder
4、ation of Manufacturers of Construction Equipment and Cranes Health and Safety Executive Institution of Civil Engineers Silsoe Research Institute Amendments issued since publication Amd. No. Date CommentsBS6912-11:1993 BSI 08-1999 i Contents Page Committees responsible Inside front cover National for
5、eword ii 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Performance requirements 1 5 Other requirements 1 6 Test method 1 List of references Inside back cover BS6912-11:1993 ii BSI 08-1999 National foreword This Part of BS 6912 has been prepared under the direction of Technical Committee B/513
6、, Construction equipment and plant, and site safety, and is identical with ISO 10533:1993 Earth-moving machinery Lift-arm support devices, published by the International Organization for Standardization (ISO). ISO 10533 was prepared by Subcommittee 2, Safety requirements and human factors, of ISO Te
7、chnical Committee 127, Earth-moving machinery, with the active participation and approval of the UK. A British Standard does not 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
8、 does not of itself confer immunity from legal obligations. Cross-references International Standard Corresponding British Standard ISO 6016:1982 BS 6300:1982 Methods of measuring the masses of whole machines, their equipment and components of earth-moving machinery (Identical) BS 6914 Terminology (i
9、ncluding definitions of dimensions and symbols) for earth-moving machinery ISO 6746-1:1987 Part 2:1988 Glossary of terms for base machine (Identical) ISO 6746-2:1987 Part 3:1988 Glossary of terms for equipment (Identical) Summary of pages This document comprises a front cover, an inside front cover,
10、 pagesi andii, pages1 and2, 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.BS6912-11:1993 BSI 08-1999 1 1 Scope This International Standard sp
11、ecifies the performance requirements and test method for mechanical lift-arm support devices for loaders, backhoe loaders and skid-steer loaders equipped with a lift-arm, where the lift-arm is required to be held in the elevated position for maintenance, servicing or other non-operational purposes.
12、It also specifies installation, instructions, storage and colour requirements for lift-arm support devices. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the e
13、ditions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of curren
14、tly valid International Standards. ISO 6016:1982, Earth-moving machinery Methods of measuring the masses of whole machines, their equipment and components. ISO 6746-1:1987, Earth-moving machinery Definitions of dimensions and symbols Part1:Base machine. ISO 6746-2:1987, Earth-moving machinery Defini
15、tions of dimensions and symbols Part2:Equipment. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 lift-arm main component or item of equipment of an earth-moving machine to lift, load, transport and lower earth or other materials 3.2 mechanical lift
16、-arm support device(s) one or more links, bars or structures, including attachment points and parts, designed to support the lift-arm 3.3 working circuit pressure that nominal pressure applied to the specific circuit by the pump(s) 4 Performance requirements The mechanical lift-arm support device sh
17、all be designed to withstand the static load imposed by the lowering force of the working circuit pressure plus1,5times the mass of the empty attachments, arms and linkage. If the lift-arm support device is loaded by lifting action, then it shall also withstand the lifting force. The lowering or lif
18、ting forces, excluding the mass of empty attachments, arms and linkage shall be determined by consulting the manufacturers maximum recommended specifications measured in accordance with ISO 6016, ISO 6746-1 andISO6746-2. 5 Other requirements 5.1 Installation The support device shall be installed wit
19、hin the machine structure so that neither movement of the machine nor upward and downward movement of the lift-arm linkage will dislodge or disengage the support device. It is recommended that the elevated lift-arm position be selected to provide good access for maintenance and servicing operation.
20、5.2 Installation instructions Installation instructions shall be provided by a permanent means in a location adjacent to the point of use. The instructions should clearly state that maintenance and servicing operations should be made with an empty bucket or empty attachment. 5.3 Storage The support
21、device and its required parts shall be stored permanently on the machine in a secure manner. 5.4 Colour The support device, excluding the attaching parts, shall be red on all machines except where the machine colour is red, in which case the support device shall be yellow. 6 Test method A physical t
22、est is required to verify the design criteria of clause 4 for each different design of lift-arm support device. The support device shall withstand the test and not exhibit any permanent structural deformation or failure.2 blankBS6912-11:1993 BSI 08-1999 List of references See national foreword.BS691
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