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1、BRITISH STANDARD BS 6914-2: 1988 ISO 6746-1: 1987 Terminology (including definitions of dimensions and symbols) for earth-moving machinery Part 2: Glossary of terms for base machine ISO title: Earth-moving machinery Definitions of dimensions and symbols Part 1: Base machine UDC 624.132:621.878.2/.87
2、9:001.4:003.62 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 This British Standard, having been prepared under the direction of the Road Engineering Standards Committee, was published under the authority of the Board of BSI
3、and comes into effect on 30 December 1988 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference RDB/21 Draft for comment 86/13392 DC ISBN 0 580 17020 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted
4、by the Road Engineering Standards Committee (RDB/-) to Technical Committee RDB/21, upon which the following bodies were represented: Associated Offices Technical Committee Construction Industry Training Board Construction Plant-hire Association Department of Trade and Industry Mechanical Engineering
5、 and Manufacturing Technology Division (Mmt) Federation of Civil Engineering Contractors Federation of Manufacturers of Construction Equipment and Cranes Health and Safety Executive Institution of Civil Engineers Institution of Highways and Transportation Ministry of Defence Amendments issued since
6、publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI 09-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope and field of application1 2References1 3G
7、eneral definitions1 4General1 5Coding system1 Annex A Three-dimensional reference system Definitions2 Annex B Height dimensions Terms and symbols3 Annex C Width dimensions Terms and symbols5 Annex D Length dimensions Terms and symbols6 Annex E Radial dimensions Terms and symbols8 Annex F Angular dim
8、ensions Terms and symbols9 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 ii BSI 09-1999 National foreword This Part of BS 6914 is a revision of BS 6295-1:1982 and has been prepared u
9、nder the direction of the Road Engineering Standards Committee. It is identical with ISO 6746-1:1987 “Earth-moving machinery Definitions of dimensions and symbols Part 1: Base machine”, published by the International Organization for Standardization (ISO). This Part of BS 6914 supersedes BS 6295-1:1
10、982 which is withdrawn. ISO 6746-1 was produced as a result of international discussion in which the UK took an active part. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and
11、 certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. Wherever the words “part of ISO 6746” appear, referring to this standard, they should be read as “Part of BS 6914”. Reference is made in the text for information to ISO 7132:1
12、984, ISO 7134:1985, ISO 71351) and ISO 7136:1986 for which no corresponding British Standards exist; this does not adversely affect the validity of the standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for
13、their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 10, an inside back cover and a back cover. This standard has been updated
14、 (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Cross-references International StandardCorresponding British Standard BS 6914 Terminology (including definitions of dimensions and symbols) for earth-moving machin
15、ery ISO 6165:1987Part 1:1988 Glossary of terms for basic types of earth-moving machinery (Identical) ISO 6746-2:1987Part 3:1988 Glossary of terms for equipment (Identical) ISO 7131:1984BS 6685:1986 Glossary of terms for loaders used for earth-moving (Identical) ISO 7133:1985BS 6823:1987 Glossary of
16、terminology and content of commercial specifications for tractor-scrapers used for earth-moving, and their equipment (identical) 1) In preparation. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI 09-19991 1 Scope and field
17、 of application This part of ISO 6746 defines terms and symbols relating to dimensions of the base machine of earth-moving machinery. It applies to the basic types of earth-moving machines as defined in ISO 6165. 2 References ISO 6165, Earth-moving machinery Basic types Vocabulary. ISO 6746-2, Earth
18、-moving machinery Definitions of dimensions and symbols Part 2: Equipment. 3 General definitions For the purposes of this International Standard, the following definitions apply. 3.1 three-dimensional reference system see Annex A 3.2 ground reference plane (GRP) zero Z plane on which the machine is
19、placed for the measurements the plane is: a) for wheeled machines, a hard level surface; b) for crawler machines: 1) tractors, pipelayers the face for grouser-type shoe (see H5), 2) loaders, excavators the tip of the grouser (see H5), 3) low ground pressure for triangular section shoe, one-half of t
20、he distance between the track link bolting surface and the tip of the grouser (see H5). 3.3 base machine machine, without equipment, as described by the manufacturers specifications the machine should be provided with the necessary mountings to secure equipment as detailed in ISO 6746-2 4 General An
21、nex B, Annex C, Annex D, Annex E and Annex F give the symbols and term definitions relating to the dimensions of the base machine of earth-moving machinery. 5 Coding system Each dimension listed in Annex B, Annex C, Annex D, Annex E and Annex F is assigned a code which is composed of a letter (see 5
22、.1) and an International Standard reference number (see 5.2). 5.1 One capital letter indicates a dimension, as follows: H = height dimensions W = width dimensions L = length dimensions R = radial dimensions A = angular dimensions 5.2 An International Standard reference number indicates the specific
23、machine (see ISO 6746-1, ISO 7131, ISO 7132, ISO 7133, ISO 7134, ISO 7135 and ISO 7136 as applicable). Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 2 BSI 09-1999 Annex A Three-dimensional reference system Definitions A.1 Re
24、ference system This annex defines the three-dimensional reference system used to determine dimensions of earth-moving machines. The system shall not be used for commercial documents. A.2 Definitions The following definitions are specific to the three-dimensional reference system. A.2.1 zero Y plane
25、vertical plane which passes through the longitudinal centreline of the machine A.2.2 X plane any vertical plane normal to the Y plane A.2.3 Z plane any horizontal plane normal to the X and Y planes A.2.4 positive coordinate the positive direction is forward of the zero X plane, right of the zero Y p
26、lane, and above the zero Z plane NOTE 1The intersection of the X, Y, Z axes (zero planes) is normally located at a well defined base point (i.e. SIP for a seat; crankshaft centreline for an engine; sprocket or rear axle centreline for a tractor; ground line for machine measurements). NOTE 2If only c
27、omponents (e.g. engine, seat) are shown, the location and positive direction of the axis from the intersection of the X, Y, Z axes (zero planes) assume the normally expected orientation of the component to a machine (i.e. number one cylinder of engine to the front of the machine, seat facing to the
28、front). NOTE 3If a machine and/or its equipment are shown, a machine driving from right to left shall be shown. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI 09-19993 Annex B Height dimensions Terms and symbols NOTEFor t
29、hree-axle dumpers and scrapers, symbols H1 to H4 apply only to the tractor part. SymbolTermDefinitionDrawing H1Maximum total height Distance on Z coordinate between the GRP and the highest point of the machine with cab or ROPSa. H2Maximum height Distance on Z coordinate between the GRP and the highe
30、st point of the machine without cab or ROPS. H3Shipping height Distance on Z coordinate between the highest point on the machine after removal of parts normally removed for shipping and (for wheeled machines) the GRP and (for crawler machines) the tip of the grouser. a Roll-over protective structure
31、. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 4 BSI 09-1999 SymbolTermDefinitionDrawing H4Ground clearance Distance on Z coordinate between the GRP and the central part of the machine. The central part of the machine is de
32、fined as 25 % of the track gauge (W2) or tread (wheel track) (W3) to either side of the zero Y plane. H5Grouser height Distance on Z coordinate between two Z planes passing through the face of the shoe and the tip of the grouser. For a triangular section shoe, it is the distance between two Z planes
33、 passing through the track link bolting surface and the tip of the grouser. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI 09-19995 Annex C Width dimensions Terms and symbols SymbolTermDefinitionDrawing W1Maximum width Di
34、stance on Y coordinate between two Y planes passing through the farthest points of the machine on both sides of zero Y plane. For three-axle dumpers and scrapers, this applies only to the tractor part. W2Track gaugeDistance on Y coordinate between two Y planes passing through the mid-width of the sp
35、rocket teeth. W3Tread (wheel track) Distance on Y coordinate between two Y planes passing through the tyre centreline. In the case of dual wheels it is the distance between two Y planes passing through the centreline of the dual wheels. If the machine has more than one tread (wheel track) dimension,
36、 each should be specified. W4Track shoe width Distance on Y coordinate between two Y planes passing through the extreme lateral points of the same track shoe. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 6 BSI 09-1999 Annex
37、 D Length dimensions Terms and symbols SymbolTermDefinitionDrawing L1Maximum length Distance on X coordinate between two X planes passing through the farthest points on the front and rear of the machine. For three-axle dumpers and scrapers, this applies only to the tractor part. L2Crawler baseDistan
38、ce on X coordinate between two X planes passing through the sprocket axis and the idler axis. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI 09-19997 SymbolTermDefinitionDrawing L3Wheel-baseDistance on X coordinate betwee
39、n two X planes passing through the centres of the front wheels and the rear wheels with machine and wheels in the straight ahead position. In the machine equipped with a rear tandem, the centre of the rear wheel is the line midway between the two axles of the tandem. For three-axle dumpers and scrap
40、ers, the wheel-base applies to the tractor part. L4Overhang to rear mounting surface Distance on X coordinate between two X planes passing: for crawler machines, through the sprocket or rear idler axis and the rear mounting surface of the machine; for wheeled machines, through the rear wheel centre
41、and the rear mounting surface. L5Rear axle to hinge Distance on X coordinate between two X planes passing through the rear axle and hinge centre. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 8 BSI 09-1999 Annex E Radial dim
42、ensions Terms and symbols SymbolTermDefinitionDrawing R1Turning radius Distance in Z plane between the turning centre and the track or tyre centreline describing the largest circle, while the machine is executing its smallest practicable turn. NOTEFor hydrostatic crawlers, R1 will be the machine cen
43、terline. R2Machine clearance radius Distance in Z plane between the turning centre and the farthest point of the machine while it is executing its smallest practicable turn. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI
44、09-19999 Annex F Angular dimensions Terms and symbols SymbolTermDefinitionDrawing A1Articulation angle Angle in Z plane described by the front portion of a machine when pivoting from the straight ahead position to the maximum left or right position. Licensed Copy: sheffieldun sheffieldun, na, Tue De
45、c 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 10 blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2:1988 BSI 09-1999 Publications referred to See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec
46、05 01:08:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6914-2: 1988 ISO 6746-1: 1987 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at t
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