BS ISO 13052-2013 Road vehicles Trailers up to 3 5 t Requirements for jockey wheels and drawbar supports《道路车辆 3 5 t以下的拖车 导轮和牵引杆支承的要求》.pdf

1、BSI Standards PublicationBS ISO 13052:2013Road vehicles Trailers upto 3,5 t Requirements forjockey wheels and drawbarsupportsBS ISO 13052:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 13052:2013. The UK participation in its preparation was entrusted to T

2、echnicalCommittee AUE/8, Undergear for caravans and light trailers. A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applica

3、tion. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 68870 6ICS 43.100Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee

4、on 31 October 2013.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 13052:2013 ISO 2013Road vehicles Trailers up to 3,5 t Requirements for jockey wheels and drawbar supportsVhicules routiers Remorques jusqu 3,5 t Exigences pour roues jockey et supports de barres datte

5、lageINTERNATIONAL STANDARDISO13052First edition2013-11-01Reference numberISO 13052:2013(E)BS ISO 13052:2013ISO 13052:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized o

6、therwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright offi

7、ceCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 13052:2013ISO 13052:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO m

8、ember bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governm

9、ental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenanc

10、e are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention

11、 is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and

12、/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity a

13、ssessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 4, Exterior fittings of car/traile

14、r-caravan combinations. ISO 2013 All rights reserved iiiBS ISO 13052:2013BS ISO 13052:2013Road vehicles Trailers up to 3,5 t Requirements for jockey wheels and drawbar supports1 ScopeThis International Standard is intended to define safety requirements which apply to jockey wheels and drawbar suppor

15、ts provided to support the single axle (centre axle) rigid drawbar trailers nose weight with a technically permissible maximum laden mass not more than 3,5 tons.2 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2.1jockey wheeldevice usually mounted o

16、n the front of the trailer to support the nose weight of the trailer and to adjust the height of the drawbar if not connectedNote 1 to entry: This device permits the movement of the trailer in any direction at steady-state without the use of a towing road vehicle.2.2drawbar support devicedevice fast

17、ened to the drawbar with height-adjustable mechanism, retaining the trailer in horizontal position when being disconnected to the towing vehicleNote 1 to entry: Built up with a vertical tubular strut and adjustable height provided with a blocking system and/or clamping system activated by handle ope

18、ration.Note 2 to entry: When this device is equipped with a lift system, uncoupling the axle of the coupling ball to the coupling ball shall be permitted.2.3nose massmass on the coupling point which is needed to hold the trailer in horizontal positionNote 1 to entry: The S value is the vertical mass

19、, in kilograms, imposed on the coupling, under static conditions, by the centre axle trailer, as defined in ECE R5501 paragraph 2.13, of technically permissible maximum mass.2.4vertical static loadvertical load applied to the coupling device of the towing vehicle expressed in Newton2.5nose weightloa

20、d holding up the drawbar support device when the trailer is uncoupled, with value depending on ratio of the trailer coupling point distance on its axle expressed in Newton2.6lifting forcereacting force on the ground from the nose weight expressed in Newton2.7strutadjustable tubular equipment holding

21、 up the nose weight, telescopic or not, fitted with a wheel or notINTERNATIONAL STANDARD ISO 13052:2013(E) ISO 2013 All rights reserved 1BS ISO 13052:2013ISO 13052:2013(E)2.8clamping systemdevice used to block the strut by a clamping ring and an operation handle or by a clamping set screwNote 1 to e

22、ntry: In these two cases, device shall insure blocking of the strut which supports the nose weight in order to stabilize the uncoupled trailer in horizontal position.2.9coupling headmechanical part fitted to the drawbar of trailers for connecting to the 50 mm diameter coupling ball on the towing veh

23、icle defined in ECE R55 article 2.6.22.10drawbar eyesmechanical part having a parallel hole suitable for a 50 mm diameter pin and fitted to the drawbar of trailers for connecting to automatic drawbar couplings defined in ECE R55 article 2.6.42.11load lifting capacitymaximum vertical mass, in kg, giv

24、en by the manufacturer of the jockey wheel or the drawbar support device which can be lifted3 Jockey wheels requirements3.1 MarkingsEach jockey wheel and drawbar support shall be permanently and clearly legibly marked with the following information on a component that cannot be lost unintentionally

25、and that cannot be removed without tool: manufacturers identification; load lifting capacity.3.2 TestingThe drawbar support device strength shall be tested by applying a load equal to two times the permissible static vertical load value at the coupling head of the trailer as described in Formula (1)

26、:Test load = 2 permitted load lifting capacity (1)3.2.1 Calculation of the lifting forceThe drawbar support device strength shall be tested by applying a load equal to two times the permissible static vertical load value at the coupling head of the trailer or drawbar eyes.The requisite lifting force

27、 shall be calculated as follows:LiftingForce =+xyPgx()(2)2 ISO 2013 All rights reservedBS ISO 13052:2013ISO 13052:2013(E)Key1 drawbar ball coupling2 jockey wheel3 axle4 lifting forcex distance between jockey wheel and axle, mmy distance between drawbar ball coupling and jockey wheel, mmP maximum per

28、missible static vertical mass at coupling point, kgNOTE P (as maximum nose weight with S) is declared on the manufacturer plate of the trailer.Figure 1 Diagram for the calculation of the lifting force3.2.2 Test parameters Secure the screw-mounting plate or clamping retainer to the test rig. In the c

29、ase of a clamping attachment, securely clamp the jockey wheel. Ensure a vertical direction of the jockey wheel tube. Crank up the jockey wheel to the maximum lifting height specified by the manufacturer. Ensure a vertical direction of the jockey wheel tube. Select an unfavourable position for the wh

30、eel, i.e. at the forward end of the clamping attachment/fastening plate turned away.3.2.3 Test resultWhen the test load is applied, no actuation (no slipping) of the jockey wheel or drawbar support can take place after 5 min.When the testing force is discontinued, no visible damage or distortion sha

31、ll be present. Further trouble-free functioning shall be ensured. Jockey wheels shall safely absorb the test load without lowering unintentionally.3.2.4 Test processa) Install the trailer on a flat and horizontal ground.b) Check the adjustability of the drawbar support device 550 mm height of the co

32、upling point from the towing vehicle (drawbar support device used with a lift system).c) Check the adjustability of the drawbar support device height of the coupling point from the towing vehicle (drawbar support device without lift system). ISO 2013 All rights reserved 3BS ISO 13052:2013ISO 13052:2

33、013(E)d) Apply double static load value of the lifting force at the jockey wheel point of the trailer.e) By a maximal force of 250 N on the operating handle impacted the clamping system or blocking system, block the drawbar support device strut. The test should be done with a new undamaged product.f

34、) When the test load is applied, no actuation (no slipping) of the jockey wheel or drawbar support can take place after 1 min. The height of the coupling point of the towing vehicle has been adjusted according b) or c).g) Repeat the test from d) to f), the strut shall be on an intermediate position.

35、h) When the trailer town and is in motion, the ground clearance shall be of 150 mm from the ground to any lower part of the drawbar support device.3.2.5 Result of testWhen the testing force is discontinued, any strut or parts shall not have any visible damage or distortion.3.3 Activated condition (t

36、railer uncoupled) - actuating force of the jockey wheel operat-ing handle and the T-ScrewThe required actuating force to operate the operating handle of the clamping system shall not exceed 250 N and shall block the strut under nose weight.3.4 Deactivated condition (trailer in towed mode)3.4.1 In re

37、tracted condition, the lifting mechanism shall exhibit safety devices which prevent the unintentional release and loss of any parts.3.4.2 Hand cranks and other components which can be removed when the rig is in operational condition shall be secured against being lost.3.4.3 It shall not be possible

38、to unintentionally separate any part in extended condition. The safety device shall be designed in such a way that it cannot be overcome even under the application on the crank of a manual force of 250 N.3.4.4 The design of the jockey wheel and/or the clamping device shall allow a minimum clearance

39、to the ground of 150 mm, when the trailer is coupled horizontally.3.4.5 When driving, the adjustment mechanism shall not start moving by vibrations.4 Designa) Drawbar support devices shall be designed and equipped by a guard to prevent any contact with the ground in case of strut blocking means loos

40、ening due to vibrations when the towing vehicle is in motion.b) For drawbar support device installed with lifting system, it shall be impossible to unintentionally separate exterior from interior tubes of struts with an adaptive system.c) The drawbar support device shall be installed to ensure a tra

41、iler ground clearance of 150 mm when the trailer uncoupled is in horizontal position.d) The operating handle and other movable parts shall be secured from any loss when unused.4 ISO 2013 All rights reservedBS ISO 13052:2013ISO 13052:2013(E)5 Mounting, operating, and maintenance instructions5.1 Mount

42、ing instructions5.1.1 Jockey wheels shall be secured in such a way that at least the finger-tip clearances (with a minimum of 25 mm) are maintained around the operating elements of the fastening devices.5.1.2 Jockey wheels should be selected and mounted in such a way that the related drawbar ball co

43、upling can be raised to a height of at least 550 mm from the ground.5.1.3 The jockey wheel has to be installed in a way that in driving position there is a ground clearance of at least 150 mm.5.1.4 Jockey wheel has to be installed at the appropriate place designed by the trailer manufacturer.a) All

44、devices of the drawbar support (operating handle, strut, etc.) shall be located at a distance of 25 mm from any fixed elements.b) Jockey wheels built up with screw jack shall permit to raise the axle of the coupling point of the trailer at a height of 550 mm from the ground.c) Struts of single jocke

45、y wheels and drawbar support shall have a sufficient height to stabilize the trailer when uncoupled.5.2 Operating and maintenance instructionsThe operating and maintenance instruction manual shall contain information as to specified use, handling, maintenance, troubleshooting, wear criteria, and a m

46、inimum of clearance to ground during driving.When driving the jockey wheel should be raised to a highest position and safely secured. ISO 2013 All rights reserved 5BS ISO 13052:2013ISO 13052:2013(E)Bibliography1 ISO 3833, Road vehicles Types Terms and definitions2 EN 349, Safety of machinery Minimum

47、 gaps to avoid crushing of parts of the human body3 Directive 97/27, Relating to the masses and dimensions of certain categories of motor vehicles and their trailers and amending Directive 70/156/EEC4 UN ECE R55, Uniform provisions concerning the approval of mechnical coupling components of combinat

48、ions of vehicles6 ISO 2013 All rights reservedBS ISO 13052:2013BS ISO 13052:2013ISO 13052:2013(E) ISO 2013 All rights reservedICS 43.100Price based on 6 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications

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