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1、BRITISH STANDARD BS 5759:1987 Incorporating Amendment No.1 Specification for Webbing load restraint assemblies for use in surface transport UDC 629.045:677.074.33 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 This British Stan
2、dard, having been prepared under the direction of the Textile and Clothing Standards Committee, was published under the authority of the Board of BSI and comes into effect on 27 February 1987 BSI 07-1999 First published October 1979 First revision February 1987 The following BSI references relate to
3、 the work on this standard: Committee reference TCM/7 Draft for comment 85/43947 DC ISBN 0 580 15558 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Textiles and Clothing Standards Committee (TCM/-) to Technical Committee TCM/7 upon wh
4、ich the following bodies were represented: Association of Solid Woven Belting Manufacturers British Narrow Fabrics Association Consumer Standards Advisory Committee of BSI Home Laundering Consultative Council Man-made Fibres Producers Committee Ministry of Defence Society of Dyers and Colourists Tex
5、tile Institute The following bodies were also represented in the drafting of the standard, through sub-committees and panels: Association of Webbing Load Restraint Equipment Manufacturers British Railways Board Made-up Textiles Association Road Haulage Association Ltd Textile Research Council Vehicl
6、e Builders and Repairers Association Amendments issued since publication Amd. No.Date of issueComments 6859November 1991 Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 BSI 07-1999i Contents
7、 Page Committees responsibleInside front cover Forewordii 1Scope1 2Definitions1 3Design and construction1 4Webbing1 5Hardware2 6Making-up2 7Rated assembly strength2 8Particular requirements for rail transport2 9Marking4 10Instructions for care and use4 Appendix A Glossary of terms relating to load r
8、estraint equipment5 Appendix B Drop test for tensioning device9 Appendix C Method for determination of breaking force9 Appendix D Recommendations for use10 Figure 1 Forces and accelerations in surface transport3 Figure 2 Typical delta fitting5 Figure 3 Typical basic hooks5 Figure 4 Typical flat hook
9、6 Figure 5 Typical hook and keeper6 Figure 6 Typical pallet hook7 Figure 7 Typical snap hook7 Figure 8 Typical representative examples of webbing load restraint assemblies11 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Unco
10、ntrolled Copy, (c) BSI BS 5759:1987 ii BSI 07-1999 Foreword This British Standard has been prepared under the direction of the Textiles and Clothing Standards Committee and forms a revision of the 1979 edition. It supersedes BS 5759:1979 which is withdrawn. Textile load restraint systems may be used
11、 to secure cargo for road, rail and sea transport taking into consideration the different forces experienced during normal transportation of goods. Changes from the previous edition clarify the standard in terms of the relationship between the rated assembly strength, and the load to be restrained.
12、Particular requirements for rail transport have also been included. 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 immuni
13、ty from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 12, 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
14、amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 BSI 07-19991 1 Scope This British Standard specifies requirements for webbing load restraint assemblies for use in road, rail and sea tra
15、nsport. It also includes particular requirements for rail transport. It is not intended to apply to webbing assemblies such as load restraint nets, which are specified in BS 6451, nor does it include anchorage points. NOTEThe titles of the publications referred to in this standard are listed on the
16、inside back cover. 2 Definitions For the purposes of this British Standard, the following definitions apply. NOTEAdditional definitions relating to webbing load restraint equipment are given in Appendix A . 2.1 breaking force the maximum tensile force observed during a test in which the assembly is
17、stretched until it breaks 2.2 load restraint assembly (lashing) an assembly comprising webbing, one or more suitable tensioning devices or buckles, and any other fittings incorporated in the assembly but excluding anchorage points 2.3 load restraint system a collection of load restraint assemblies 2
18、.4 rated assembly strength (RAS) one half of the mass, in tonnes, that the assembly will sustain in straight line pull NOTE 1The rated assembly strength for webbing load restraint assemblies is referred to in the Code of practice “Safety of loads on vehicles” published by HMSO under the authority of
19、 the Department of Transport, 1984. NOTE 2Figure 1 indicates the forces and accelerations that may be encountered in surface transport. 2.5 representative assembly an assembly representative of a production run or batch of assemblies. It is not necessarily of the same length but is of the same type
20、(i.e. has webbing of the same type of weave, the same width and the same material and, if applicable, has the same type of end fitting and tensioning device) 2.6 webbing a woven narrow fabric, the prime function of which is load bearing. It is generally of a coarse weave and multiple plies 3 Design
21、and construction The load restraint assembly shall be composed of the following: a) webbing; b) suitable tensioning device(s); c) any fittings appropriate to the particular design or assembly. NOTE.The design and construction of the assembly should be suitable for its intended use. For guidance in t
22、his respect, refer to the Code of practice “Safety of loads on vehicles” published by HMSO, 1984. 4 Webbing The webbing shall be woven from continuous filament, high tenacity polyester, polyamide or polypropylene yarns. NOTE 1Polyester loses little strength when wet, it is resistant to moderate stre
23、ngth acid but can be damaged by alkali. Polyamide may lose up to 15 % in strength whilst wet, it is highly resistant to alkalies but can be damaged by moderate strength acids. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 2 BS
24、I 07-1999 Polypropylene is particularly useful where chemical inertness is an important requirement in use. Attention is drawn to the fact that some polypropylene products are likely to be susceptible to actinic degradation, and it is essential that an ultraviolet stabilizer be incorporated in the p
25、olymer. Attention is also drawn to the fact that certain types of polypropylene may be susceptible to stress relaxation which, particularly in certain climatic conditions, can reduce the tension in the assembly. The webbing shall be supplied loomstate, coloured, or treated to improve resistance to a
26、brasion or light degradation. The edges shall have non-fray characteristics. NOTE 2The webbing should be uniformly woven, free from any defect liable to affect its performance. NOTE 3No absolute strength value is specified for the webbing, since the webbing strength required to obtain a specified as
27、sembly strength will vary according to the particular design or assembly. 5 Hardware 5.1 All hardware shall be free from burrs and sharp edges. The edges of hardware which are in contact with the webbing shall have a minimum radius of 1.5 mm. If requested by the purchaser, metal parts, when subjecte
28、d to the corrosion test specified in BS 5466-1, shall be free from ferrous corrosion. 5.2 The buckle or tensioning device shall be of such a design as to require a positive action to release it. 5.3 The buckle, tensioning device or end fitting shall show no signs of damage that will affect the funct
29、ion of the mechanism when tested by the method given in Appendix B and, when made up into an assembly or representative assembly and tested in accordance with Appendix C, it shall comply with the assembly breaking force appropriate to the rated assembly strength calculated as in clause 7. 6 Making-u
30、p 6.1 Sewing threads shall be of the same material as the webbing. 6.2 The seams shall be made on a machine with lock stitch. Any damage caused by the stitches to the yarn in the webbing shall not affect the performance of the assembly. 6.3 The stitches shall not touch or affect the edge of the webb
31、ing, and shall not be closer to the edge than 3 mm. The locking of the stitches shall not be visible on either side of the webbing. 6.4 The stitches shall be locked or backstitched so that they do not unravel in use. There shall be no more than one fault (e.g. a missed stitch, broken thread, etc.) i
32、n a seam length of 100 mm. Each fault shall be compensated for by back- or over stitching for a distance of at least 25 mm. 6.5 The ends of cut webbing shall be finished in such a way as to avoid unravelling. 7 Rated assembly strength The breaking force of the assembly or representative assembly sha
33、ll be determined in accordance with Appendix C. From the breaking force figures obtained, in kilonewtons, the rated assembly strength, in tonnes, shall be calculated by means of the equation: NOTEThe calculated rated assembly strength may be rounded down, in accordance with BS 1957 to the nearest tw
34、o significant figures but may not be rounded up. 8 Particular requirements for rail transport 8.1 In addition to the other requirements of this British Standard, webbing load restraint assemblies for use in rail transport shall comply with the requirements specified in 8.2 to 8.5. 8.2 The webbing sh
35、all be 50 2 mm wide when tested in accordance with BS 1930 and not greater than 3.5 mm thick when tested in accordance with BS 2544. 8.3 No modifications or repairs shall be undertaken on webbing. 8.4 The assembly shall withstand a tensile force of 45 kN, when tested in accordance with Appendix C. 8
36、.5 The webbing shall be protected by the use of sleeves manufactured from the same material as the webbing, and woven in a tubular form. The ends of the sleeves shall be heat sealed. NOTEFixed winches on rail wagons should be at least equal in strength to the specified webbing and should be used in
37、preference to loose equipment. If the load, because of its shape and general size, precludes the use of fixed winches, only tensioning devices which have been approved by the relevant transport authority should be used. Rated assembly strength Assembly breaking force 29.81 - -= Licensed Copy: sheffi
38、eldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 BSI 07-19993 Figure 1 Forces and accelerations in surface transport Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 4 BSI 07-1999
39、 9 Marking Each complete assembly and each part of the assembly, if it is intended that parts be separable, shall be durably and clearly marked with the following information, either directly or on a durably attached label, and not more than 1 m from the buckle, tensioning device or end fitting: a)
40、name, trademark or other means of identification of the manufacturer; b) number and date of this British Standard, i.e. BS 5759:19871); c) rated assembly strength (RAS) in tonnes; d) material from which the webbing is manufactured. NOTEThe following abbreviations may be used, providing the recommend
41、ations for care and use contain an interpretation of any abbreviation used: 10 Instructions for care and use The manufacturer shall make available instructions concerning care and use. NOTE 1It is recommended that the information given in Appendix D be used as a basis for the instructions. D.1 and D
42、.2 give recommendations and general instructions for the use of webbing load restraint assemblies which apply to all forms of transport, whereas D.3 gives specific instructions on the use of the particular systems in relation to road transport. NOTE 2Any repairs that may become necessary during the
43、life of the assembly should be carried out only under the guidance of the manufacturer. 1) Marking BS 5759:1987 on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of the standard. The accuracy of such a claim is therefore solely t
44、he manufacturers responsibility. Enquiries as to the availability of third party certification should be addressed to the appropriate certification body. polyamide: PA polyester: PES polypropylene: PP Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy,
45、(c) BSI BS 5759:1987 BSI 07-19995 Appendix A Glossary of terms relating to load restraint equipment (see clause 2) A.1 Webbing and fittings A.1.1 chain anchor. A chain used as an end fitting to secure the ends to a vehicle. A.1.2 dee fitting. A fitting shaped like a letter “D”, used as an end fittin
46、g to engage with a hook anchorage on a vehicle. It may also be used on certain internal restraint lashings to assist with hand-pulled tensioning. A.1.3 delta fitting. A delta-shaped fitting, with or without a cross bar, used as an end fitting to engage with a hook anchorage on a vehicle. NOTESee Fig
47、ure 2. Figure 2 Typical delta fitting Figure 3 Typical basic hooks Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:00:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5759:1987 6 BSI 07-1999 A.1.4 ring. A fitting shaped like a letter “O” which may be used as a webbing junction ring with a
48、harness or net lashing or as in A.1.2. A.1.5 elephants foot. A fitting shaped like an elephants foot, usually of high strength, used as an end fitting. The fitting is mainly used on ships, and with a specially shaped end socket. A.1.6 sewn loop (webbing lashing eye). An end fitting formed by sewing
49、the webbing into an eye. In the case of 50 mm wide webbing the sewn loop is always folded in half. The eye has either leather or tough textile reinforcement and the inside length is not less than 100 mm. A.1.7 web/chain connector. An end fitting, usually sewn to one or both ends of a load restraint assembly, having two elongated apertures: one for attaching the webbing, the other to permit a chain to pass through and then engage with links in the chain. A.1.8 Hooks A.1.8.1 basic hook
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