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1、BRITISH STANDARD AUTOMOBILE SERIES CONFIRMED APRIL 1991 BS AU 190:1983 Specification for Interface dimensions and fixing bolts for the mounting of overrun devices on delta shaped drawbars of trailers up to 2000 kg UDC 629.1.013.5:629.11-43 Licensed Copy: London South Bank University, London South Ba
2、nk University, Sat Dec 09 01:57:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 190:1983 This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 September 1983 BSI 02-
3、2000 The following BSI references relate to the work on this standard: Committee reference AUE/8 Draft for comment 82/76439 DC ISBN 0 580 13399 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE/-) to T
4、echnical Committee AUE/8 upon which the following bodies were represented: Association of Trailer Manufacturers Caravan Club Chief and Assistant Chief Fire Officers Association Department of Industry (Mechanical Engineering) Department of Transport National Caravan Council Limited Society of Motor M
5、anufacturers and Traders Limited Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 190:1983 BSI 02-2000i Contents Page Committees responsibl
6、eInside front cover Forewordii 1Scope1 2Definitions1 3Mounting dimensions1 4Fixing bolts and nuts1 Figure 1 Positions of mounting holes in delta shaped drawbar1 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:47 GM
7、T+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 190:1983 ii BSI 02-2000 Foreword This British Standard has been prepared under the direction of the Automobile Standards Committee. It is intended to ensure interchangeability of overrun devices when they are mounted on delta shaped drawbars of trailers
8、. 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 does not of itself confer immunity from legal obligations. Summary of pages This document comprise
9、s a front cover, an inside front cover, pages i and ii, pages 1 and 2, 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. Licensed Copy: London S
10、outh Bank University, London South Bank University, Sat Dec 09 01:57:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 190:1983 BSI 02-20001 1 Scope This British Standard specifies requirements for interface dimensions and fixing bolts for the mounting of overrun devices on delta shaped drawbars o
11、f trailers up to a gross mass of 2 000 kg. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this British Standard, the following definitions apply. 2.1 delta shaped drawbar twin drawbars of a trailer whose included
12、 angle, where they join, is approximately 30. 2.2 overrun device a device that automatically applies the brakes of a trailer when the speed of the towing vehicle decreases. 3 Mounting dimensions The sizes and disposition of mounting holes shall be as shown in Figure 1. NOTEOverrun devices are provid
13、ed with slots to accommodate the two rear fixing bolts, the position of which may vary within the tolerance on the angle shown in Figure 1. 4 Fixing bolts and nuts Four 1/2 UNI grade S bolts and nuts complying with BS 1768, or four 12 mm grade 8.8 bolts and nuts complying with BS 3692, shall be used
14、 to secure the overrun device to the mounting face of the drawbar. The nuts shall be secured by a locking method that will prevent them becoming loose. Figure 1 Positions of mounting holes in delta shaped drawbar Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 0
15、1:57:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 190:1983 BSI 02-2000 Publications referred to BS 1768, Unified precision hexagon bolts, screws an
16、d nuts (UNC and UNF threads). Normal series. BS 3692, ISO metric precision hexagon bolts, screws and nuts. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 190:1983 BSI 389 Chiswick High Road London W4 4AL
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