BS-6916-8-1988 ISO-7505-1986.pdf
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1、BRITISH STANDARD BS 6916-8: 1988 ISO 7505:1986 Chain saws Part 8: Method of measurement of hand-transmitted vibration ISO title: Forestry machinery Chain saws Measurement of hand-transmitted vibration UDC 674.053:621.93:621.932.5:621.936.6:620.115 + 620.178.5 + 057.2 Licensed Copy: sheffieldun sheff
2、ieldun, na, Tue Dec 05 04:27:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6916-8:1988 This British Standard, having been prepared under the direction of the Agricultural Machinery and Implements Standards Committee, was published under the authority of the Board of BSI and comes into effect on 3
3、0 December 1988 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference AGE/29 Draft for comment 83/76396 DC ISBN 0 580 16327 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Agricultural Machin
4、ery and Implements Standards Committee (AGE/-) to Technical Committee AGE/29, upon which the following bodies were represented: Arboricultural Association British Agricultural and Garden Machinery Association Ltd. Consumer Policy Committee of BSI Consumers Association Department of Trade and Industr
5、y (Consumer Safety Unit, CA Division) Forestry Commission Health and Safety Executive National Farmers Union National Union of Agricultural and Allied Workers Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:27:00 GMT+00:00 2
6、006, Uncontrolled Copy, (c) BSI BS 6916-8:1988 BSI 02-2000i Contents Page Committees responsibleInside front cover National forewordii 1Scope and field of application1 2References1 3Data acquisition and processing1 4Positioning of accelerometers2 5Accuracy of the measuring equipment2 6Rotational fre
7、quency range and measured value2 7Measuring object3 8Hand-held method4 9Test report5 Annex Frequency range and weighting filter6 Figure 1 Weighted acceleration sum2 Figure 2 Accelerometer positions3 Figure 3 Test log shape4 Figure 4 Chain saw position at cutting5 Figure 5 Frequency weighting filter
8、for hand-arm Table 1 Guide bar usable cutting length and width of test log4 Table 2 Presentation of test data5 Table 3 Frequency weighting filter for hand-arm6 Publications referred toInside back cover ah,w() Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:27:00 GMT+00:00 2006, Uncontrolle
9、d Copy, (c) BSI BS 6916-8:1988 ii BSI 02-2000 National foreword This Part of BS 6916 has been prepared under the direction of the Agricultural Machinery and Implements Standards Committee. It is identical with ISO 7505:1986 “Forestry machinery Chain saws Measurement of hand-transmitted vibration” pr
10、epared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, of the International Organization for Standardization (ISO). It should be noted that this standard is a product test procedure and is not intended as a method of measurement and evaluation for assessment of
11、 operator exposure or field evaluation of data for which case BS 6842:1987 “Measurement and evaluation of human exposure to vibration transmitted to hand”, is the appropriate standard to use. Other Parts of BS 6916 are as follows: Part 1: Glossary of terms; Part 2: Method for specifying requirements
12、; Part 3: Specification for dimensions of front hand guards; Part 4: Specification for strength of front hand guards; Part 5: Methods of evaluating chain brake performance; Part 6: Method of measurement of airborne noise at the operators position; Part 7: Method of evaluating engine performance incl
13、uding fuel consumption; Part 9: Specification for strength of handles; Part 10: Specification for longitudinal balance; Part 11: Specification for general design, performance, safety and construction requirements for internal combustion engined machines.1) Terminology and conventions. The text of th
14、e International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker
15、. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “Part of BS 6916”. The Technical Committee has reviewed the provisions of ISO 5347, ISO 5348
16、 and ISO 5349, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. There are no corresponding British Standards. 1) In preparation. Cross-references International StandardCorresponding British Standard ISO 6531:1982BS 6916 Chain
17、 saws Part 1:1988 Glossary of terms (Identical) IEC 651:1979BS 5969:1981 Specification for sound level meters (Identical) Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:27:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6916-8:1988 BSI 02-2000iii A British Standard does not purport to in
18、clude 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 immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pag
19、es i to iv, pages 1 to 8, 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 amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:27:00 GMT+
20、00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:27:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6916-8:1988 BSI 02-20001 1 Scope and field of application This International Standard specifies general methods for data acquisition and proce
21、ssing concerning hand-transmitted vibrations induced by portable chain saws. The methods are valid irrespective of how the chain saw is operated during the test, for example, whether it is hand-held or fitted in a stand, and whether it is cutting a log or not. This International Standard specifies a
22、n operator hand-held procedure for acquisition of vibration data from portable chain saws. NOTE 1The hand-arm system exerts an influence on the hand-transmitted vibration and different hands and grips exert different influences. Therefore, the development of a standardized stand for holding the saw
23、during the measurement is planned. The development of such stands is in progress. NOTE 2The measurements in the three axes shall be made at, or clearly related to, the surface of the hand where the energy enters the body. As the hands of the person are in direct contact with the vibrating surface of
24、 the hand-grip, the transducer should be fastened to the vibrating structure. This International Standard is primarily intended for user and manufacturer purposes. 2 References ISO 5347, Methods of calibration of vibration and shock pickups2). ISO 5348, Mechanical vibration and shock Mechanical moun
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