BS ISO 2330-2002 Fork-lift trucks - Fork arms - Technical characteristics and testing《叉式起重车 叉形臂 技术特性和试验》.pdf

1、BRITISH STANDARD BS ISO 2330:2002 Fork-lift trucks Fork arms Technical characteristics and testing ICS 53.060 BS ISO 2330:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards P

2、olicy and Strategy Committee on 6 August 2002 BSI 6 August 2002 ISBN 0 580 40200 2 National foreword This British Standard reproduces verbatim ISO 2330:2002 and implements it as the UK national standard. It supersedes BS ISO 2330:1995 which is withdrawn. The UK participation in its preparation was e

3、ntrusted to Technical Committee MHE/7, Industrial trucks, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document

4、 may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Use

5、rs are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for chan

6、ge, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 4, an inside back cover and a b

7、ack cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 2330 Third edition 2002-05-01 Reference number ISO 2330:2002(E) Fork-lift trucks Fork arms Technical characte

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13、thsio.ch Web wwwsi.oc.h BSISO2330:2002iiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member bo

14、dy interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrot

15、echnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Pu

16、blication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or

17、all such patent rights. International Standard ISO2330 was prepared by Technical Committee ISO/TC110, Industrial trucks, Subcommittee SC 2, Safety of powered industrial trucks. This third edition cancels and replaces the second edition (ISO 2330:1995), of which it constitutes a minor revision. The S

18、cope has been modified. BSISO2330:2002iiiANRETNIITOTS LANDNADRA ISO 3322002:0)E( ISO 2002 r llAithgs reservde 1 Fork-lift trucks Fork arms Technical characteristics and testing 1 Scope This International Standard specifies manufacturing, testing and marking requirements for solid-section fork arms,

19、for quantity production and with all types of mounting. These include, but are not limited to, hook, shaft or pin, bolt-on and roller type fork arms. By agreement between the fork arm manufacturer and the purchaser, these requirements may also be applied to fork arms not intended for quantity manufa

20、cture. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to

21、 agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain re

22、gisters of currently valid International Standards. ISO 148:1983, Steel Charpy impact test (V-notch) ISO 683-1:1987, Heat-treatable steels, alloy steels and free-cutting steels Part 1: Direct-hardening unalloyed and low-alloyed wrought steel in form of different black products ISO 2328:1993, Fork-li

23、ft trucks Hook-on type fork arms and fork arm carriages Mounting dimensions ISO 2331:1974, Fork lift trucks Hook-on type fork arms Vocabulary 3 Terms and definitions For the purposes of this International Standard, the terms and definitions given in ISO 2331 and the following apply. 3.1 prototype fo

24、rk arm fork arm intended for quantity production where any combination of the blade, shank cross-section, material specification, hook or fork heel design is new to production 4 Manufacture The fork arms shall be manufactured from material of solid cross-section. 5T e s t i n g 5.1 A prototype fork

25、arm shall be subjected to, and meet the requirements of, the yield test in clause 6 and the impact test in clause 7. BSISO2330:20021ISO :0332(2002)E 2 ISO 2002 Ar llithgr seresvde Prototype fork arms each having a specified capacity not greater than and a load centre not greater thanshall be subject

26、ed to, and meet the requirements of, the fatigue test in clause 8. 5.2 The tests in clauses 6 and 7 may, by agreement between the fork arm manufacturer and the purchaser, be repeated periodically for quantity production fork arms. 6 Yield test 6.1 Test load 6.1.1 Fork arms each of specified capacity

27、 up to and including The test load shall correspond to three times the specified capacity of the fork arm. 6.1.2 Fork arms each of specified capacity greater than The test load shall correspond to the specified capacity , expressed in kilograms, of the fork arm multiplied by the safety factor , wher

28、e is given as follows: where 6.2 Procedure Restrain the fork arm in a manner identical to that used on the fork-lift truck. Fit the fork arm with a means of measuring any permanent deformation. Apply the appropriate yield test load twice at the distance from the front face of the fork arm shank (see

29、 Figure 1), gradually and without shock; maintain it for each time. For fork arms each of specified capacity below and a load centre of , shall be taken as the appropriate rated load centre distance as specified in Table 1 of ISO 2328:1993. For fork arms each of specified capacity of and above and a

30、 load centre of , shall be specified by the truck manufacturer. a Marking position (on either face). Figure 1 Marking position and test loads application position 4 000 kg 4 000 kg 600 mm 5 500 kg F T C 5 500 kg F T C RR R = 3 0,08(Q 10) R 2,5 Q = 2C 1 000 D 30 s 5 500 kg 5 500 kg 600 mm D 5 500 kg

31、5 500 kg 600 mm D BSISO2330:20022ISO 3322002:0)E( ISO 2002 r llAithgs reservde 3 6.3 Requirement Datum readings shall be taken on the top surface of the fork blade tip after the first test and again after the second test. Comparison between these two readings shall indicate no permanent deflection.

32、7 Impact test 7.1 Sampling Specimens longitudinal to the grain shall be taken in relation to the fork arm section in accordance with the location of test pieces in bars and wire rods specified in ISO 683-1. These shall preferably be taken from an area between the top and bottom hooks, but it is also

33、 permissible to take specimens from a specially provided extension of the fork shank above the top hook or from a separate piece of semi-finished material of adequate size (i.e. length at least twice the width), which has the same cross-section, has been taken from the same material batch and has re

34、ceived the same heat treatment as the fork arm itself. 7.2 Procedure Carry out the impact tests in accordance with ISO 148 using standardized V-notched samples, at a temperature of . 7.3 Requirement The samples shall achieve an impact value of at least 27 J at . 8 Fatigue test 8.1 Test load magnitud

35、e, frequency and duration 8.1.1 The dynamic test load shall be of constant amplitude and have a peak magnitude of 1,25 times the specified capacity . The minimum value for the dynamic test load shall not exceed 0,1 times the specified capacity . 8.1.2 The test load frequency shall be maximum. The fr

36、equency shall be reduced if the temperature of the fork arm exceeds or if resonance symptoms occur. 8.1.3 The duration of the test shall be not less than 10 6test load cycles. 8.2 Procedure Restrain the fork arm in a manner identical to that used on the fork-lift truck. Apply the dynamic test load a

37、t the distance from the front face of the fork arm shank where is as specified in 6.2 (see Figure 1). 8.3 Requirement There shall be no cracks or permanent deformation in the fork arm on completion of the test. The crack detection procedure shall be as specified in clause 9. 20 C 20 C C C 10 Hz 50 C

38、 D BSISO2330:20023ISO :0332(2002)E 4 ISO 2002 Ar llithgr seresvde 9 Surface-crack detection The fork arm manufacturer shall thoroughly visually examine every fork arm in quantity production (or following a fatigue test) for cracks, and subject them to a non-destructive crack detection process with s

39、pecial attention being given to the heel and any welds and heat-affected zones at the top and bottom hooks, including their attachment to the shank. The fork arm shall be withdrawn if indications of cracking are detected. It is recommended that the non-destructive crack detection process be carried

40、out by the magnetic particle inspection method. 10 Marking 10.1 At the position indicated in Figure 1 (on either face), each fork arm shall be marked permanently with the following: a) the specified fork arm capacity , in kilograms; b) the specified load centre distance , in millimetres; c) the fork

41、 arm manufacturers identification; d) the week or month and year of manufacture or agreed serial number. 10.2 The truck manufacturers identification and part number may be shown if requested. C D BSISO2330:20024BS ISO 2330:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Instituti

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