1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 192:1983 ISO7237:1981 Glossary of terms for Masses and dimensions of caravans ISO title: Road vehicles Masses and dimensions of caravans Terms and definitions UDC 629.11 43.071+728.76:001.4BSAU192:1983 This BritishStandard, having been prepared under the dire
2、ctionof the Automobile Standards Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 31 October 1983 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference AUE/- Draft for comment80/79675DC ISBN 0 580 13483 0 Committees r
3、esponsible for this BritishStandard This BritishStandard was published under the direction of the Automobile Standards Committee AUE/-, upon which the following bodies were represented: Amalgamated Union of Engineering Workers Auto-cycle Union Automobile Association British Rubber Manufacturers Asso
4、ciation British Steel Industry Department of Industry (Mechanical Engineering) Department of the Environment (Transport and Road Research Laboratory) Department of Transport (Highways) Freight Transport Association Limited Institute of Purchasing and Supply Institution of Mechanical Engineers Instit
5、ution of Production Engineers London Transport Executive Ministry of Defence Motor Cycle Association of Great Britain National Caravan Council Limited National Freight Corporation (NFC) Ltd. Road Haulage Association Ltd. Royal Automobile Club Society of Motor Manufacturers and Traders Limited Amendm
6、ents issued since publication Amd. No. Date of issue CommentsBSAU192:1983 BSI 02-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Field of application 1 3 References 1 4 General 1 5 Masses 1 6 Dimensions 3 Publications referred to Inside back coverBSAU1
7、92:1983 ii BSI 02-2000 National foreword This BritishStandard, which has been prepared under the direction of the Automobile Standards Committee, is identical with ISO7237:1981 “Road vehicles Masses and dimensions of caravans Terms and definitions” prepared by Technical Committee ISO/TC22, Road vehi
8、cles, and published by the International Organization for Standardization (ISO). Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a BritishStandard without deviation. Some terminology and certain conventions are not identical with t
9、hose used in BritishStandards; attention is drawn especially to the following. The comma has been used as a decimal marker. In BritishStandards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this stan
10、dard, they should be read as “BritishStandard”. Cross-references. The references in the text to ISO1176 are to the revised edition of ISO1176, currently in course of preparation. The 1974 edition is referred to in clause3. The technical committee has reviewed the provisions of ISO612, ISO1103, ISO11
11、76 and ISO3833, referred to in the text, and has decided that they are acceptable for use in conjunction with this standard. A related BritishStandard for ISO1103 is BS AU113a “Specification for dimensional characteristics of coupling ball for caravans and light trailers”. A British Standard does no
12、t 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 does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside f
13、ront cover, pages iandii, pages1 to6, 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.BSAU192:1983 BSI 02-2000 1 1 Scope This International Sta
14、ndard defines terms relating to masses and dimensions of caravans. It does not deal with methods of measurement, the units used in reporting the results, the accuracy required or the order of magnitude of the masses and dimensions defined. 2 Field of application The provisions of this International
15、Standard apply to caravans as defined in ISO3833. 3 References ISO612, Road vehicles Dimensions of motor vehicles and towed vehicles Terms and definitions. ISO1103, Road vehicles Caravans and light trailors Coupling ball Dimensional characteristics. ISO1176, Road vehicles Weights Vocabulary. ISO3833
16、, Road vehicles Types Terms and definitions. 4 General Unless otherwise stated, the definitions are applicable for a caravan new from the factory, in the following conditions: a) the caravan is stationary and the supporting surface is horizontal; lengths and widths are measured in the horizontal pla
17、ne, and heights in the vertical plane; b) all wheels of the caravan, including the jockey wheel, rest on the supporting surface, and its interior floor is horizontal; c) roof vents, doors, and windows are closed; retractable steps are retracted; d) the longitudinal median plane of the caravan is tha
18、t defined in ISO612, clause5; e) the mass of the caravan, at the moment of measurement, is the maximum authorized total mass (see5.1.4.2), the load being distributed according to the manufacturers instructions; f) the tyres are inflated to the pressure corresponding to the maximum authorized total m
19、ass (see5.1.4.2) of the caravan. 5 Masses 5.1 Masses relative to the caravan alone No. Term Definition 5.1.1 unladen mass The mass of the caravan fully equipped for service in accordance with manufacturers specification, but excluding optional extras. 5.1.2 delivered mass The mass of the caravan inc
20、luding all equipment and optional extras as delivered to the first retail buyer. 5.1.3 actual mass The mass of the caravan as loaded for a particular journey. 5.1.4 maximum total mass 5.1.4.1 maximum manufacturers total mass The mass calculated by the manufacturer for specific operating conditions,
21、taking into account such elements as strength of materials, tyre loading capacity, etc. 5.1.4.2 maximum authorized total mass The mass calculated by the administrative authority for operating conditions laid down by the authority. NOTEContrary to the footnote to term 4.7.2 in ISO1176, this mass incl
22、udes the static load divided by g aon the coupling ball. 5.1.4.3 maximum users total mass The mass equal to the maximum authorized total mass(5.1.4.2) or the authorized towed mass (see5.2.3.2), whichever has the smaller value. a g is the standard acceleration due to gravity.BSAU192:1983 2 BSI 02-200
23、0 5.2 Masses relative to the combination of motor vehicle and caravan No. Term Definition 5.1.5 payload 5.1.5.1 manufacturers maximum payload Product of g aand the difference between the maximum manufacturers total mass (5.1.4.1) and the unladen mass(5.1.1). 5.1.5.2 maximum authorized payload Produc
24、t of g aand the difference between the maximum authorized total mass (5.1.4.2) and the unladen mass(5.1.1). 5.1.5.3 users maximum payload Product of g aand the difference between the maximum users total mass (5.1.4.3) and the delivered mass (5.1.2). 5.1.6 load on the left wheel (on the right wheel)
25、The load transmitted to the supporting surface by the wheel(s) located on the left side (right side) of the caravan. 5.1.7 maximum authorized load on the axle The difference between the product of the maximum authorized total mass (5.1.4.2) and g aand the static load at the coupling ball (see5.1.8).
26、 5.1.8 static load at the coupling ball The vertical static load applied at the centre of the coupling ball cup in the coupling head of the caravan. This centre is coincident with the centre of the coupling ball on the towing motor vehicle. 5.1.9 maximum permissible static load at the coupling head,
27、 for the caravan The maximum static load, laid down by the manufacturer of the caravan, and, in countries where it is necessary, authorized by the administrative authority, that is permissible for the caravan. NOTEFor the maximum static load on the coupling ball for the towing motor vehicle, see5.2.
28、4. a g is the standard acceleration due to gravity. No. Term Definition 5.2.1 actual combined mass The sum of the actual mass of the caravan(5.1.3) and its towing motor vehicle. 5.2.2 maximum authorized actual combined mass, for a motor vehicle The sum of the maximum authorized mass of the motor veh
29、icle (seeISO1176) and the mass obtained by dividing the maximum authorized load on the axle(5.1.7) by g aunless the administrative authority fixes a lower limit. 5.2.3 towed mass (by a motor vehicle) SeeISO1176. 5.2.3.1 manufacturers towed mass SeeISO1176. 5.2.3.2 authorized towed mass SeeISO1176. 5
30、.2.4 maximum permissible static load on the coupling ball, for the towing motor vehicle The maximum static load(5.1.8), on the coupling ball of the motor vehicle, declared by the manufacturer of that vehicle, and which the motor vehicle is designed to support. a g is the standard acceleration due to
31、 gravity.BSAU192:1983 BSI 02-2000 3 6 Dimensions 6.1 Longitudinal dimensions No. Term Definition Drawing 6.1.1 overall length The distance between the two vertical planes perpendicular to the longitudinal median plane of the caravan and touching the front and rear of the caravan respectively. NOTEAl
32、l parts of the caravan, including any parts projecting from the rear, are contained within these two planes. 6.1.2 body length The distance between two vertical planes, perpendicular to the longitudinal median plane of the caravan, and touching the front and rear parts of the body. NOTEAll accessori
33、es fixed on the body (for example signalling lights, handles) are contained within these two planes. 6.1.3 wheel space In the case close coupled axles, or tandem axle, the distance between the two vertical planes passing through the centre lines of the wheels. 6.1.4 rear overhang The distance betwee
34、n the vertical plane passing through the axis of the wheels and the rearmost point of any parts rigidly attached to the caravan. NOTEIn the case of caravans having twin axles, the axis of the rear wheels shall be taken for this purpose. 6.1.5 drawbar length The distance between two vertical planes,
35、perpendicular to the longitudinal median plane of the caravan, one passing through the centre of the coupling ball and the other passing through the front edge of the body bearer situated on the chassis frame.BSAU192:1983 4 BSI 02-2000 6.2 Transverse dimensions No. Term Definition Drawing 6.1.6 forw
36、ard displacement of the centre of gravity The distance between the vertical plane passing through the axis of the wheels and the centre of gravity of the caravan. NOTEIn the case of twin axles, the vertical plane equidistant from the two axles shall be taken for this purpose. No. Term Definition Dra
37、wing 6.2.1 overall width The distance between the two vertical planes parallel to the longitudinal median plane of the caravan and touching the caravan on both sides of this plane. 6.2.2 track The distance between: a) in the case of two single wheels corresponding to the same real or imaginary axle,
38、 the two straight lines formed by the axes of the traces left by the wheels on the supporting surface; b) in the case of twin wheels, the straight lines, on each side of the caravan, equidistant from the outer edge of the trace of the inner wheel and from the inner edge of the trace of the outer whe
39、el. 6.2.3 lateral displacement of the centre of gravity The distance between the centre of gravity and the longitudinal median plane of the caravan.BSAU192:1983 BSI 02-2000 5 6.3 Vertical dimensions No. Term Definition Drawing 6.3.1 overall height The distance between the supporting surface and a ho
40、rizontal plane touching the uppermost part of the caravan. NOTEContrary to clause4 e), this dimension shall be measured when the mass of the caravan is the unladen mass(5.1.1). 6.3.2 height of coupling head The distance between the supporting surface and the centre of the coupling head. 6.3.3 height
41、 of centre of gravity The distance between the centre of gravity and the supporting surface, determined according to the loading conditions specified in 5.1.1. 6.3.4 ground clearance The distance between the ground and the lowest point of the centre part of the vehicle. The centre part is that part
42、contained between two planes parallel to and equidistant from the longitudinal median plane (of the vehicle) seeclause4 d) and separated by a distance which is80% of the least distance between points on the inner edges of the wheels on any one axle. 6.3.5 height to floor The distance from the suppor
43、ting surface to the upper surface of the floor.BSAU192:1983 6 BSI 02-2000 6.4 Angles No. Term Definition Drawing 6.4.1 departure angle The greatest angle between the horizontal plane and planes tangential to the static loaded wheel tyres (behind the axle), such that no point of the caravan behind th
44、e axle and no part rigidly attached to the caravan lies below these planes. NOTEIn the case of twin axles, the rearmost wheels shall be taken for this purpose. 6.4.2 ramp angle for the combination of motor vehicle and caravan The supplement of the smallest dihedral angle over which the combination o
45、f motor vehicle and caravan can cross without fouling the ridge, the ball distance from the ground being in the height range specified in ISO1103. 6.4.3 manoeuvring angle for the combination of motor vehicle and caravan The angle between the longitudinal median plane of the caravan and the longitudi
46、nal median plane of the motor vehicle when the motor vehicle draws or pushes the caravan. 6.4.4 limit of reversing angle for the combination of motor vehicle and caravan The maximum value of the manoeuvring angle(6.4.3), in the reversing gear, that the driver may increase or decrease. NOTEWhen the m
47、anoeuvring angle is above this value, the driver is unable to control the reversing manoeuvre. 6.4.5 angle of contact of the combination of motor vehicle and caravan The maximum manoeuvring angle(6.4.3) at which the motor vehicle contacts the caravan.BSAU192:1983 BSI 02-2000 Publications referred to
48、 Seenational foreword.BS AU 192:1983 ISO7237:1981 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated
49、 by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an i
