BS-AU-26-1964.pdf
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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 26:1964 (Supersedes S.M.M.T. Standard No. 62) Incorporating Amendment No. 1 Specification for Towing jaw for use between trailers of 516 tons gross weight and towing vehicle UDC 629.11.013.5:629.11.013.35 Licensed Copy: London South Bank University, London So
2、uth Bank University, Sat Dec 09 01:52:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 26:1964 This British Standard, having been approved by the Automobile Industry Standards Committee and endorsed by the Chairman of the Engineering Divisional Council, was published under the authority of the Ge
3、neral Council of the Institution on 15 June 1964 BSI 03-2000 The following BSI reference relates to the work on this standard: Committee reference AUE/- ISBN 0 580 34549 1 Amendments issued since publication Amd. No.Date of issueComments 72August 1968Indicated by a sideline in the margin Licensed Co
4、py: London South Bank University, London South Bank University, Sat Dec 09 01:52:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 26:1964 BSI 03-2000i Contents Page Forewordii 1Scope1 2Materials1 3Dimensions1 4Design1 5Mounting1 6Marking1 Licensed Copy: London South Bank University, London South
5、Bank University, Sat Dec 09 01:52:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 26:1964 ii BSI 03-2000 Foreword This British Standard, which is published under the authority of the Automobile Industry Standards Committee of the BSI, is based upon data-sheet SMMT 62:1957 of the Society of Motor
6、 Manufacturers and Traders Ltd. The requirements of this standard, which relate only to vehicles used on the public highways, are intended to ensure the maximum degree of interchangeability between commercial and Government department and Services standards. Towing jaws may be forged (as shown in Fi
7、gure) or cast. The material specifications are for the minimum qualities acceptable, and do not exclude the use of other materials provided that these are at least equal in quality so that road safety is not impaired. This standard should be used in conjunction with BS AU 291). The jaw has been desi
8、gned to accommodate a drawbar eye of 2 in internal diameter and 1; in stock, or 3 in internal diameter and 1C in stock. The standard applies to connections to trailers of 5 16 tons gross weight. The specification for a towing jaw for connections to trailers of 5 35 tons gross weight is given in BS A
9、U 282), and for trailers of 2 5 tons gross weight in BS AU 243). NOTEIf it is required to convert the figures in this standard from British units into metric units it is recommended that the conversion factors and tables contained in BS 350, “Conversion factors and tables”, be used. Attention is dra
10、wn to BS 2856, “Precise conversion of inch and metric sizes on engineering drawings”. 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 it
11、self confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amen
12、dment table on the inside front cover. 1) BS AU 29, “Drawbar eyes and forecarriage pins for connection between trailers of 5 35 tons gross weight and towing vehicle”. 2) BS AU 28, “Towing jaw for use between trailers of 5 35 tons gross weight and towing vehicle”. 3) BS AU 24, “Towing connections for
13、 trailers of 2 5 tons gross weight”. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:52:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 26:1964 BSI 03-20001 1 Scope This British Standard specifies the basic dimensions and quality of materials for a towing
14、 jaw and its mounting, for use in connections between a towing vehicle and a trailer of 5 16 tons gross weight. The gross weight refers to gross laden train weights where more than one trailer is drawn. 2 Materials The jaw shall be made from a material of quality not less than BS 9704). En 3A for th
15、e forged jaw, or BS 592A5) for the cast jaw, both materials to be in their normalized condition. The towing pin shall be made from a material of quality not less than BS 9704) En 8Q. 3 Dimensions Dimensions shall be as shown in the figure. The ringed dimensions are essential for interchangeability,
16、other dimensions apply to the forges jaw and are for guidance only. NOTEThe dimensions specified for the forged jaws have been calculated on the basis of the total yield strength being not less than two thirds of the gross weight being towed. It is necessary that any other parts not covered by this
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