《BS-AU-224B-1997.pdf》由会员分享,可在线阅读,更多相关《BS-AU-224B-1997.pdf(12页珍藏版)》请在三一文库上搜索。
1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD AUTOMOBILE SERIES BS AU 2
2、24b : 1997 ICS 43.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Portable wheel ramps for cars and light vans Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU
3、224b : 1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1997 BSI 1997 First published February 1988 Amd 5970, June 1988 The following BSI references relat
4、e to the work on this standard: Committee reference AUE/9 Draft for comment 95/716064 DC ISBN 0 580 28315 1 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee AUE
5、/9, Automobile details and accessories, upon which the following bodies were represented: Automobile Association Consumer Policy Committee of BSI Department of Trade and Industry (Consumer Safety Unit, CA Division) Department of Transport Garage Equipment Association Institute of Trading Standards A
6、dministration Society of Motor Manufacturers and Traders Limited Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 224b : 1997 BSI 1997i Contents Page Committees responsibleInside front cover Forewordii 1Sc
7、ope1 2Normative references1 3Definitions1 4Design1 5Marking2 6Warning notice2 Annexes A(normative) Classification of vehicles according to the EU4 B(normative) Roll-off and overtravel test4 C(normative) Test for longitudinal movement4 D(normative) Test of ramp incline section strength5 E(normative)
8、Test of ramp platform section strength6 F(normative) Test for permanence of marking6 Figures 1Height of a typical vehicle ramp3 2Base width of a typical vehicle ramp3 3Typical vehicle ramp3 D.1 Ramp loading device5 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09
9、 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 1997 BS AU 224b : 1997 Foreword This British Standard has been prepared by Technical Committee AUE/9 to establish a standard of performance for portable wheel ramps to ensure that they are sufficiently robust so that under normal use they w
10、ill not fail. The standard also aims to ensure that the ramps are constructed and designed so that they will be stable and will not damage the vehicle when used in their intended manner. It supersedes BS AU 224a : 1988 which is withdrawn. This British Standard calls for the use of substances and/or
11、procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. Compliance with a British Standard does not of itself confer immunity from legal
12、obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 6, an inside back cover and a back cover. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI B
13、SI 19971 BS AU 224b : 1997 1 Scope This British Standard specifies requirements for the design, construction, performance and marking of portable wheel ramps for cars and light vans. 2 Normative references This British Standard incorporates, by dated or undated reference, provisions from other publi
14、cations. These normative references are made at the appropriate places in the text and the cited publication is listed on the inside back cover. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publication apply to this standard only when i
15、ncorporated in the reference by amendment or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 barrier stop device to impede a vehicle travelling be
16、yond the platform area of the wheel ramp 3.2 base plane plane which includes the points of contact between the base of the wheel ramp and the surface upon which it rests (see figure 1) 3.3 base width minimum width measured across the base of a wheel ramp (see figure 2) 3.4 longitudinal movement move
17、ment of the ramp on the supporting surface, forwards or rearwards, as a vehicle is driven on or off 3.5 overall diameter of tyre diameter of an inflated tyre at the outermost surface of the tread 3.6 overtravel action of a vehicle travelling off the platform section of a wheel ramp in a direction pa
18、st the barrier stop 3.7 plan area of the base area of the base plane enclosed by the points of contact between the wheel ramp and the surface on which it rests (see figure 2) 3.8 plan area of the incline section area obtained by projecting the perimeter of the incline section vertically downwards on
19、to the base plane (area A in figure 2) 3.9 projected plan area of the platform section area obtained by projecting the perimeter of the platform section vertically downwards onto the base plane (area B in figure 2) 3.10 ramp height maximum distance between the platform section and the base plane (se
20、e figure 1) 3.11 rated capacity (Safe Working Load (SWL) capacity rated by the manufacturer as the maximum mass that may be safely supported by a single wheel ramp 3.12 roll-off action of a vehicle descending from a wheel ramp such that its tyre travels down the incline of the ramp 3.13 vehicle pass
21、enger car or light van of classification M1or N1 (see annex A) 3.14 wheel ramp device consisting of an incline section and a platform section onto which a vehicle is driven for the purpose of maintenance or display (see figure 3) 4 Design 4.1 Minimum rated capacity The minimum rated capacity of a si
22、ngle wheel ramp shall be 1000 kg. 4.2 Angle of incline section The maximum angle between the incline section and the base plane shall be 25. 4.3 Stability 4.3.1 The base width divided by the ramp height shall not be less than 1.2. 4.3.2 The projected plan areas of the platform section and the inclin
23、e section shall both lie entirely within the plan area of the base. 4.4 Platform dimensions 4.4.1 The platform section shall have a minimum width of 200 mm and a minimum length of 300 mm. 4.5 Roll-off When tested in accordance with annex B, the test vehicle shall not rolloff the ramp. 4.6 Overtravel
24、 The wheel ramp shall be fitted with a device that prevents overtravel when tested in accordance with annex B. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 BSI 1997 BS AU 224b : 1997 1) Marking BS AU 224b
25、on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is therefore solely the claimants responsibility. Such a declaration is not to be c
26、onfused with third party certification of conformity, which may also be desirable. 4.7 Longitudinal movement When tested in accordance with annex C, it shall be possible for the test vehicle to be driven or reversed onto the ramps without either ramp moving more than 50 mm. Similarly, neither ramp s
27、hall move more than 50 mm when the vehicle descends. 4.8 Finish Surfaces shall not have any hazardous projections. All sharp edges shall be removed by rounding, bevelling, or by other means of deburring to prevent injury to the operator, or damage to vehicle tyres. 4.9 Strength 4.9.1 Strength of the
28、 ramp incline section When tested in accordance with annex D, the wheel ramp shall be capable of withstanding a load of 1.5 times the manufacturers rated capacity without showing any sign of breaking or fracturing. The maximum deflection of any part of the incline section shall not exceed 2 % of its
29、 original height. 4.9.2 Strength of the ramp platform When tested in accordance with annex E, the wheel ramp shall be capable of withstanding a load of double the manufacturers rated capacity without showing any sign of breaking or fracturing. The maximum deflection of any part of the ramp platform
30、shall not exceed 5 % of its original height. 5 Marking Each wheel ramp shall be legibly and permanently marked with the following information: a) the number of this British Standard, i.e. BS AU 224b : 19981); b) a manufacturers mark as a means of identifying the manufacturer, importer or supplier of
31、 the ramp; c) the rated capacity of the ramp, stated as SWL in kg; d) the largest and smallest overall diameter of tyre for which the ramp is suitable; When tested in accordance with annex F, all markings shall remain legible. Items c) and d) shall be clearly visible at the point of sale. 6 Warning
32、notice A warning notice shall be attached to each wheel ramp giving at least the following warnings. a) Use only a single pair of wheel ramps at the front or rear. Do not use two ramps on one side of the vehicle. b) Use on a hard level surface, e.g. concrete. c) Securely chock wheels remaining on th
33、e ground, and apply the handbrake. d) Exercise care when using with a trailer or a three wheeled vehicle. The notice shall also give instructions to cover safe use of the ramps under the conditions in which they are likely to be employed, in particular the following shall be detailed: how to set the
34、 ramps out; how to drive onto them; how to descend safely. Warnings shall be given regarding hazards to people in the immediate area. Any special provisions or procedures to minimize the risk of injury or damage shall be clearly specified. The materials of the notice shall be waterproof and the mini
35、mum typesize for the body of the text shall have a height of 2 mm. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 19973 BS AU 224b : 1997 Figure 1. Height of a typical vehicle ramp Figure 2. Base width of
36、a typical vehicle ramp Figure 3. Typical vehicle ramp Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 224b : 1997 4 BSI 1997 Annexes Annex A (normative) Classification of vehicles according to the EU Cate
37、goryDefinition MMotor vehicles with at least four wheels used for the carriage of passengers. M1Vehicles used for the carriage of passengers and comprising no more than eight seats in addition to the drivers seat. NMotor vehicles with at least four wheels used for the carriage of goods. N1Vehicles u
38、sed for the carriage of goods and having a maximum mass not exceeding 3.5 tonnes. NOTE. These definitions of vehicle category are also used, with very slight editorial differences, by the UN Economic Commission for Europe (ECE/Geneva). Annex B (normative) Roll-off and overtravel test B.1 Principle A
39、 specified force is applied horizontally to a vehicle which is securely mounted on a pair of wheel ramps to determine whether the vehicle rolls off the ramps. B.2 Apparatus B.2.1 Test vehicle, a standard two-wheel-drive, four wheeled production passenger car, with a nominal road wheel rim diameter o
40、f at least 330 mm (13 inches). The vehicle mass shall be known to within 50 kg. B.2.2 Means of applying the horizontal force, as specified. B.2.3 Means of measuring the applied force, to within 2 %. B.2.4 Means of controlling excess movement of the vehicle, if roll-off occurs, without affecting the
41、test process. B.3 Procedure B.3.1 Mount the front of the test vehicle on a pair of the ramps under test on a hard, level surface. Ensure that no injury can occur if the vehicle does come off the ramps. B.3.2 Take the test vehicle out of gear (or out of Park) and release the handbrake. Do not chock t
42、he wheels. B.3.3 Apply a rearward horizontal force, f, to the vehicle at a convenient point and note whether roll-off occurs, using the formula: f = 0.5v where: fis the force in newtons; vis the mass of the test vehicle in kilograms. B.3.4 Remounting the vehicle if necessary, apply the same force in
43、 a forwards direction to establish whether overtravel occurs. B.3.5 Repeat the test procedure B.3.2 to B.3.4 with the rear of the vehicle reversed on the ramps. Note whether roll-off or overtravel occurs. B.3.6 The ramp has passed the test if there is no overtravel. Annex C (normative) Test for long
44、itudinal movement C.1 Principle To establish that it is possible to ascend and descend the ramps without their moving excessively, under normal conditions. C.2 Apparatus C.2.1 A test vehicle, as described in B.2.1. C.2.2 An area of firm dry concrete, flat and level , with a smooth surface free from
45、ridges that are visible to the naked eye and with a coefficient of friction of 0.60.1 when measured with a friction tester manufactured in accordance with the design recommended by the Transport Research Laboratory (see BS 812 : Part 114 : 1989 for a description of this design of tester). C.2.3 Mean
46、s of marking the ramps position on the floor and measuring any movement to within 2 mm. C.3 Procedure C.3.1 Set out the ramps as required in the manufacturers instructions, and mark their position on the floor. C.3.2 Drive the vehicle forwards up the ramps, to stop on the platform sections. C.3.3 Me
47、asure any movement of either or both of the ramps to within 2 mm. Remark the floor position if necessary. C.3.4 Reverse the vehicle down the ramps and measure any further movement. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:11:13 GMT+00:00 2006, Uncontro
48、lled Copy, (c) BSI BSI 19975 Annex DBS AU 224b : 1997 Figure D.1 Ramp loading device C.3.5 Repeat the test procedure C.3.1 to C.3.4, reversing up the ramps, then driving down them. C.3.6 For the ramps to pass the test, neither ramp shall move more than 50 mm when the vehicle is driven on nor when it
49、 is driven off. Annex D (normative) Test of ramp incline section strength D.1 Principle A loading device which simulates a passenger car wheel and tyre is used to apply a vertical test load to the incline section of the ramp. The load is increased to 1.5 times the rated capacity of the ramp. The ramp is then examined for breakage or excessive deformation. D.2 Apparatus D.2.1 Hydraulic test rig, or other suitable device capable of applying the required force and having a means of indicating the force applied to within 2 %. D.2.2 Large flat plate, capab
链接地址:https://www.31doc.com/p-3736860.html