BS ISO 12140-2013 Agricultural machinery Agricultural trailers and trailed equipment Drawbar jacks《农业机械 农用挂车和被牵引设备 牵引杆千斤顶》.pdf

1、BSI Standards PublicationBS ISO 12140:2013Agricultural machinery Agricultural trailers and trailedequipment Drawbar jacksBS ISO 12140:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12140:2013. Itsupersedes BS ISO 12140:1998 which is withdrawn.The UK parti

2、cipation in its preparation was entrusted to TechnicalCommittee AGE/6, Agricultural tractors and forestry machinery.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract.

3、 Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 72319 3ICS 65.060.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority

4、of theStandards Policy and Strategy Committee on 31 August 2013.Amendments issued since publicationDate Text affectedBS ISO 12140:2013 ISO 2013Agricultural machinery Agricultural trailers and trailed equipment Drawbar jacksMatriel agricole Remorques agricoles et matriel tran Bquilles dattelageINTERN

5、ATIONAL STANDARDISO12140Second edition2013-07-15Reference numberISO 12140:2013(E)BS ISO 12140:2013ISO 12140:2013(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 otherwise

6、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 officeCase po

7、stale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 12140:2013ISO 12140:2013(E) ISO 2013 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements 4

8、4.1 Crank effort 44.2 Overtravel 44.3 Ground pressure 44.4 Corrosion protection 44.5 Service life . 44.6 Rated static compressive load capacity . 44.7 Rated dynamic compressive load capacity . 44.8 Rated static tensile load capacity 44.9 Rated dynamic tensile load capacity 54.10 Rated static side lo

9、ad capacity 54.11 Rated static side torque class . 54.12 Crank assembly . 54.13 Prevention of ground contact when not in use . 54.14 Security in operating position . 64.15 Hydraulic components and fittings . 64.16 Application performance . 65 Marking 76 Acceptance tests Installation and procedures 8

10、6.1 General procedures and installation of jack 86.2 Jack stand system design verification tests 86.3 Jack stand system application tests 97 Information for use .10Bibliography .11BS ISO 12140:2013ISO 12140:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federa

11、tion of national standards bodies (ISO member 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 committ

12、ee. International organizations, governmental 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 t

13、hose intended for its further maintenance 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

14、. www.iso.org/directivesAttention 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 documen

15、t will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 23, Tractors an

16、d machinery for agriculture and forestry, Subcommittee SC 3, Safety and comfort.This second edition cancels and replaces the first edition (ISO 12140:1998), which has been technically revised.iv ISO 2013 All rights reservedBS ISO 12140:2013INTERNATIONAL STANDARD ISO 12140:2013(E)Agricultural machine

17、ry Agricultural trailers and trailed equipment Drawbar jacks1 ScopeThis International Standard specifies terms and definitions, establishes test procedures, and creates minimum performance requirements for telescopic mechanical screw-type jacks or hydraulic jacks mounted on agricultural implements a

18、s original equipment and/or replacement jacks.Furthermore, this International Standard defines terms, establishes test procedures, and creates minimum acceptance criteria for the use of telescopic mechanical screw-type jacks or hydraulic jacks mounted on agricultural implements as original equipment

19、 jacks or jacks fitted with a jack attachment mounts (both weld-on and removable). In addition, it specifies minimum markings and information for use to be provided by the jack manufacturer.These jacks are used specifically for: supporting the hitch points of towed agricultural implements during sto

20、rage; lifting and lowering of implement hitches to facilitate attaching to or disconnecting from an agricultural tractor or other agricultural machines; levelling of machinery for stationary use.NOTE Drawbar jacks as part/component of a machine are also covered by ISO 4254-1:2013.2 Normative referen

21、cesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4

22、413, Hydraulic fluid power General rules and safety requirements for systems and their componentsISO 9227, Corrosion tests in artificial atmospheres Salt spray tests3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1jackhand or power-operated mecha

23、nism, with a ground contact pad (base) or wheel and fixing point (jack mount or mounting point), designed for controlled vertical movementNote 1 to entry: A hand-operated jack typically uses mechanical means to control movement. A powered-operated jack typically uses hydraulic fluid displacement to

24、control movement.3.2towed agricultural implementmachine or device that is designed to perform agricultural field operations and is pulled by an agricultural tractor or other agricultural machine and is usually equipped with wheels required for transport ISO 2013 All rights reserved 1BS ISO 12140:201

25、3ISO 12140:2013(E)3.3static compressive loadvertical force measured at the jack location under static conditions3.4dynamic compressive loadvertical force measured at the jack location during jack extension (lifting)3.5static tensile loadforce opposite of static compressive load resulting in a tensio

26、n load applied to the jack3.6dynamic tensile loadforce opposite of dynamic compressive load resulting in a tension load applied to the jack3.7side loadforce applied in a plane perpendicular to the longitudinal axis of the jack in a direction generally aligning with the towing direction of the towed

27、agricultural implement3.8side loadforce applied in a plane perpendicular to the longitudinal axis of the jack at right angles to the general towing direction of the towed agricultural implement3.9screw and nutthreaded portion of the jack that transforms rotational motion of the crank assembly into l

28、inear motion of the jack3.10screw traveltotal change in length of the jack from a fully retracted to a fully extended condition caused by screw movement only3.11swivel mountjack mounting method that allows the jack to be rotated to a storage position without removing the jack from the towed implemen

29、t3.12crank assemblyportion of the jack consisting of a crank and knob used to actuate the screw to extend or retract the jack3.13side wind jackassembly of crank, knob, outer tube, inner tube and screw/nut that causes the extension or retraction of the jack when the crank assembly is rotated about an

30、 axis perpendicular to the screw travel3.14top wind jackassembly of crank, knob, outer tube, inner tube and screw/nut that causes the extension or retraction of the jack when the crank assembly is rotated about an axis of rotation parallel to the screw travel3.15basebottom load-bearing portion of th

31、e inner tube that transmits force to the ground or floor2 ISO 2013 All rights reservedBS ISO 12140:2013ISO 12140:2013(E)3.16jack cyclecycle consisting of extending the jack through 65 % of the jack screw travel and then retracting the jack back to its original lengthNote 1 to entry: If a particular

32、jack has added screw travel for the purpose of greater unloaded range, the jack cycle can be based on 65 % of the normal screw travel.3.17retracted lengthminimum attainable dimension from the centre of the mount to the bottom of the base of the jackNote 1 to entry: In the case where the jack mount i

33、s not part of the jack during manufacture, use the uppermost part of the outer tube as the upper measuring point.3.18extended lengthmaximum attainable dimension from the centre of the mount to the bottom of the base of the jackNote 1 to entry: In the case when the jack mount is not part of the jack

34、during manufacturing, use the uppermost part of the jack outer tube as the upper measuring point.3.19basic rated lifeL10term taken from bearing terminology, indicating that the 90 %-reliable life of the samples tested pass a given requirement3.20crank efforttangential force, measured at the crank kn

35、ob position, required to actuate the jack3.21jack stand systemincludes the jack, attaching structure of the towed implement, jack mount, and attached components3.22implement tonguethat portion of the machine designed to be attached to the drawbar or hitch of the towing machine3.23drawbarmechanical c

36、onnection mounted on the rear of an agricultural tractor or other agricultural machine for the mechanical coupling of an implement3.24towed implement mountpart of the implement tongue designed to mount or accept the jack3.25largest application vertical static loadstatic compressive load when the int

37、ended application is at the maximum rated weight configuration3.26normal operational lengthjack extended to its application length to properly support and lift the implement tongue to the appropriate height for hitching to the towing machineNote 1 to entry: If the application length is unknown, the

38、operational length shall be the maximum extended length of the jack. ISO 2013 All rights reserved 3BS ISO 12140:2013ISO 12140:2013(E)4 Requirements4.1 Crank effortDuring the jack cycle, the crank effort shall not exceed 225 N while the jack is loaded to its rated dynamic compressive load capacity or

39、, if applicable, its rated dynamic tensile load capacity. The knob on the crank assembly shall be designed to rotate freely on the crank and the knob shall have a radial dimension of not less than 25 mm.4.2 OvertravelThe jack shall be designed with sufficient means to withstand the applied force whe

40、n attempting to extend or retract beyond the intended screw travel. Without functional or catastrophic failures, the jack shall be able to sustain one and one half times the maximum crank effort experienced at the rated dynamic compressive lift capacity or, if applicable, the rated dynamic tensile l

41、oad capacity.4.3 Ground pressureIf the jack is provided with a substantially flat base, the base shall be of sufficient size that the average ground pressure shall not exceed 400 kPa. The implement manufacturer may include or recommend additional support to meet the required value. Jacks equipped wi

42、th a wheel or other base configuration intended for use on an improved or special surface are excluded from this requirement.4.4 Corrosion protectionThe jack shall not experience a functional failure after a 48-h salt spray exposure in accordance with ISO 9227.Note Guidance can be drawn from ASTM B-

43、117-09 also.4.5 Service lifeThe service life for the jack shall be greater than 250 jack cycles when tested in accordance with this International Standard.4.6 Rated static compressive load capacityThe rated static compressive load capacity shall not exceed one half that of the static compressive loa

44、d sufficient to cause catastrophic failure. This load shall be applied through the intended jack mount or swivel mount. The jack shall also be able to support the rated static compressive load and afterward meet all other requirements of this International Standard. This is a maximum value and may b

45、e reduced by the jack or implement manufacturer based on application.4.7 Rated dynamic compressive load capacityThe rated dynamic compressive load capacity shall not exceed the largest dynamic compressive load to be moved by the jack through a jack cycle, and shall meet the service life and crank ef

46、fort requirements of this International Standard. This load shall be applied through the intended jack mount or swivel mount. The jack shall also independently meet all other requirements of this International Standard. The rated dynamic compressive load capacity shall not exceed the rated static co

47、mpressive load capacity. This is a maximum value and may be reduced by the jack or implement manufacturer based on application.4.8 Rated static tensile load capacityThe rated static tensile load capacity shall not exceed one half that of the static tensile load sufficient to cause catastrophic failu

48、re. This load shall be applied through the intended jack mount or swivel mount. The jack shall also be able to support the rated static tensile load and afterward meet all other 4 ISO 2013 All rights reservedBS ISO 12140:2013ISO 12140:2013(E)requirements of this International Standard. This is a max

49、imum value and may be reduced by the jack or implement manufacturer based on application.4.9 Rated dynamic tensile load capacityThe rated dynamic tensile load capacity shall not exceed the largest dynamic tensile load to be repeatedly retracted (pulled) by the jack, and shall meet the service life and crank effort requirements of this International Standard. This load shall be applied through the intended jack mount or swivel mount. The jack shall also independently meet all other requirements of this International Standard. The rat