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1、BRITISH STANDARD BS ISO 2330:1995 Implementation of ISO 2330:1995 Fork-lift trucks Fork arms Technical characteristics and testing ICS 53.060 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2330:1995 This British Standard, having been
2、 prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 July 1996 BSI 03-1999 The following BSI references relate to the work on this standard: Committee reference MHE/7 Draft for comment 94/702365 DC ISBN 0
3、580 26127 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee MHE/7, Industrial trucks, upon which the following bodies were represented: Automated Mechanical Handling Systems Association British Gas plc British Industrial
4、Truck Association Castor Manufacturers (UK) Association Department of Trade and Industry (Engineering Markets Division) Federation of Manufacturers of Construction Equipment and Cranes Food and Drink Federation Health and Safety Executive Ministry of Defence Ports Safety Organisation Amendments issu
5、ed since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2330:1995 BSI 03-1999i Contents Page Committees responsibleInside front cover National forewordii Forewordii 1Scope1 2Normative references1 3Def
6、initions1 4Manufacture1 5Testing1 6Yield test1 7Impact test2 8Fatigue test2 9Surface-crack detection2 10Marking2 Figure 1 Marking position and test loads application position2 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2330:1995
7、ii BSI 03-1999 National foreword This British Standard reproduces verbatim ISO 2230:1995 and implements it as the UK national standard. It supersedes BS 5639-4:1978 which is withdrawn. This British Standard is published under the direction of the Engineering Sector Board whose Technical Committee MH
8、E/7 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOT
9、EInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their corr
10、ect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the ISO title page, page ii, pages 1 and 2 and a back cover. This standard has been updated (s
11、ee copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:2
12、4:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2330:1995 ii BSI 03-1999 Foreword 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
13、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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates
14、 closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at lea
15、st 75 % of the member bodies casting a vote. International Standard ISO 2330 was prepared by Technical Committee ISO/TC 110, Industrial trucks, Subcommittee SC 2, Safety of powered industrial trucks. This second edition cancels and replaces the first edition (ISO 2330:1974), of which it constitutes
16、a technical revision. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2330:1995 BSI 03-19991 1 Scope This International Standard specifies manufacturing, testing and marking requirements for solid section fork arms, for quantity produ
17、ction and with all types of mounting. By agreement between the fork arm manufacturer and the purchaser, these requirements may also be applied to fork arms not intended for quantity manufacture. 2 Normative references The following standards contain provisions which, through reference in this text,
18、constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition
19、s of the standards indicated below. Members of IEC and ISO maintain registers 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 w
20、rought steel in form of different black products. ISO 2328:1993, Fork-lift 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 Definitions For the purposes of this International Standard, the definitions given
21、 in ISO 2331 and the following definition apply. 3.1 prototype fork 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 mate
22、rial of solid cross-section. 5 Testing 5.1 A prototype fork arm shall be subjected to, and meet the requirements of, the yield test in clause 6 and the impact test in clause 7. Prototype fork arms each having a specified capacity not greater than 4 000 kg shall be subjected to, and meet the requirem
23、ents 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 up to and including 5 000 k
24、g The test load FT shall correspond to three times the specified capacity C of the fork arm. 6.1.2 Fork arms each of specified capacity greater than 5 000 kg The test load FT shall correspond to the specified capacity C of the fork arm multiplied by the factor R, where R is given as follows: R = 3 0
25、,08(Q 10) where R 2,5 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 D from the front face of the fork arm shank (see Figu
26、re 1), gradually and without shock; maintain it for 30 s each time. For fork arms each of specified capacity below 5 500 kg, D 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 5 500 kg and above, D shal
27、l be specified by the truck manufacturer. 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. Q 2C 1000 - -= Licensed Copy: sheffield
28、un sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2330:1995 2 BSI 03-1999 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 spe
29、cified in ISO 683-1. These shall preferably be taken from an area between the top and bottom hooks, but it is also 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 a
30、t least twice the width), which has the same cross-section, has been taken from the same material batch and has received 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 20 C.
31、 7.3 Requirement The samples shall achieve an impact value of at least 27 J at 20 C. 8 Fatigue test 8.1 Test load magnitude, 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 C. The minimum value for the d
32、ynamic test load shall not exceed 0,1 times the specified capacity C. 8.1.2 The test load frequency shall be 10 Hz maximum. The frequency shall be reduced if the temperature of the fork arm exceeds 50 C or resonance symptoms occur. 8.1.3 The duration of the test shall be not less than 106 test load
33、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 at the distance from the front face of the fork arm shank where D is as specified in 6.2 (see Figure 1). 8.3 Requirement There shall be no cracks or permanent deformatio
34、n in the fork arm on completion of the test. The crack detection procedure shall be as specified in clause 9. 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 no
35、n-destructive crack detection process with special 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. NOTE 1It is recommended that the n
36、on-destructive crack detection process is 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 C, in kilograms; b) the specified load centre
37、 distance D, in millimetres; c) the fork 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. Figure 1 Marking position and test loads application position Licens
38、ed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 15:24:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | |
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