ANSI ISO 5007-2006 Agricultural wheeled tractors - Operator s seat - Laboratory measurement of transmitted vibration.pdf

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1、 ASABE/ISO 5007:2003 MAY2006 (R2016ED) Agricultural wheeled tractors Operators seat Laboratory measurement of transmitted vibration American Society of Agricultural and Biological Engineers ASABE is a professional and technical organization, of members worldwide, who are dedicated to advancement of

2、engineering applicable to agricultural, food, and biological systems. ASABE Standards are consensus documents developed and adopted by the American Society of Agricultural and Biological Engineers to meet standardization needs within the scope of the Society; principally agricultural field equipment

3、, farmstead equipment, structures, soil and water resource management, turf and landscape equipment, forest engineering, food and process engineering, electric power applications, plant and animal environment, and waste management. NOTE: ASABE Standards, Engineering Practices, and Data are informati

4、onal and advisory only. Their use by anyone engaged in industry or trade is entirely voluntary. The ASABE assumes no responsibility for results attributable to the application of ASABE Standards, Engineering Practices, and Data. Conformity does not ensure compliance with applicable ordinances, laws

5、and regulations. Prospective users are responsible for protecting themselves against liability for infringement of patents. ASABE Standards, Engineering Practices, and Data initially approved prior to the society name change in July of 2005 are designated as “ASAE“, regardless of the revision approv

6、al date. Newly developed Standards, Engineering Practices and Data approved after July of 2005 are designated as “ASABE“. Standards designated as “ANSI“ are American National Standards as are all ISO adoptions published by ASABE. Adoption as an American National Standard requires verification by ANS

7、I that the requirements for due process, consensus, and other criteria for approval have been met by ASABE. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreemen

8、t means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. CAUTION NOTICE: ASABE and ANSI standards may be revised or withdrawn at any time. Additionally, proced

9、ures of ASABE require that action be taken periodically to reaffirm, revise, or withdraw each standard. Copyright American Society of Agricultural and Biological Engineers. All rights reserved. ASABE, 2950 Niles Road, St. Joseph, Ml 49085-9659, USA, phone 269-429-0300, fax 269-429-3852, hqasabe.org

10、ASABE/ISO 5007:2003 MAY2006 (R2016ED) Copyright American Society of Agricultural and Biological Engineers 1 ASABE/ISO 5007:2003 MAY2006 (R2016ED) Approved May 2006; reaffirmed January 2016 as an American National Standard Agricultural wheeled tractors Operators seat Laboratory measurement of transmi

11、tted vibration These materials are subject to copyright claims of ISO and ASABE. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ASABE. All requests pertaining to the ANSI/ISO 5007:2003 MAY2006 (R2016) Stand

12、ard should be submitted to ASABE. This standard was reviewed for adoption by the ASABE Power and Machinery Agricultural MachineryCommon Tests Technical subcommittee, and has been formally approved by the Technical Committee. The adoption of this standard was made possible by the signing of 2004 SAE-

13、ASABE copyright agreements, which gave ASABE a royalty-free license to publish in whole or in part SAE standard document J1386. Adopted by ASABE May 2006. Approved as an American National Standard May 2006; editorial revision and reaffirmed by ASABE January 2011; reaffirmed by ANSI February 2011, re

14、affirmed and revised editorially January 2016. Keywords: Operator, Seat, Tractors, Vibration 0 Foreword 0.1 ASABE/ISO 5007:2003, Agricultural wheeled tractors Operators seat Laboratory measurement of transmitted vibration, is an adoption without modification of the identically titled ISO standard IS

15、O 5007:2003, Agricultural wheeled tractors Operators seat Laboratory measurement of transmitted vibration. This ISO standard is a derivative of SAE J1386, Classification of Agricultural Wheeled Tractors for Vibration Tests of Operator Seats, Recommended Practice. 0.2 This International Standard spec

16、ifies, in accordance with ISO 10326-1:1992, a laboratory method for measuring and evaluating the effectiveness of the suspension of operator seats on agricultural wheeled tractors. It also specifies acceptance criteria based on the test results, while defining the input spectral classes relating to

17、three classes of agricultural tractor with rubber tyres, unsprung rear axles and no low-frequency cab isolation - those of up to 3 600 kg (class 1), those of from 3 600 kg to 6 500 kg (class 2), and those of over 6 500 kg (class 3) each of which defines a group of machines having similar vibration c

18、haracteristics. The method tests the effectiveness of the seat suspension in reducing the vertical whole-body vibration transmitted to the operator at frequencies of from 1 Hz to 20 Hz. It is not applicable to vibration reaching the operator other than through the seat (e.g. that sensed by the opera

19、tors feet on the platform or control pedals or hands on the steering wheel). NOTE The tests and criteria defined in this International Standard are intended for operator seats used in agricultural tractors of conventional design. Tractors with design features such as isolated front or rear axles or

20、both and low-frequency cab suspensions, which result in significantly different vibration characteristics, can be tested in accordance with ISO 5008 to determine a whole body vibration emission value or using other standards developed for measuring and evaluating the effectiveness of the seat suspen

21、sion on such vehicles. 0.3 Five normative references are listed in ISO 5007:2003. These references have been reviewed and accepted as part of the adoption of ASABE/ISO 5007:2003. 0.4 This standard has been approved as an American National standard by ANSI (American National Standard Institute). ASAB

22、E/ISO 5007:2003 MAY2006 (R2016ED) Copyright American Society of Agricultural and Biological Engineers 2 Text of ISO 5007:2003, Agricultural wheeled tractors Operators seat Laboratory measurement of transmitted vibration, title, follows. 1 Scope This International Standard specifies, in accordance wi

23、th ISO 10326-1, a laboratory method for measuring and evaluating the effectiveness of the suspension of operator seats on agricultural wheeled tractors. It also specifies acceptance criteria based on the test results, while defining the input spectral classes relating to three classes of agricultura

24、l tractor with rubber tyres, unsprung rear axles and no low-frequency cab isolation - those of up to 3 600 kg (class 1), those of from 3 600 kg to 6 500 kg (class 2), and those of over 6 500 kg (class 3)each of which defines a group of machines having similar vibration characteristics. The method te

25、sts the effectiveness of the seat suspension in reducing the vertical whole-body vibration transmitted to the operator at frequencies of from 1 Hz to 20 Hz. It is not applicable to vibration reaching the operator other than through the seat (e.g. that sensed by the operators feet on the platform or

26、control pedals or hands on the steering wheel). NOTE The tests and criteria defined in this International Standard are intended for operator seats used in agricultural tractors of conventional design. Tractors with design features such as isolated front or rear axles or both and low-frequency cab su

27、spensions, which result in significantly different vibration characteristics, can be tested in accordance with ISO 5008 to determine a whole body vibration emission value or using other standards developed for measuring and evaluating the effectiveness of the seat suspension on such vehicles. 2 Norm

28、ative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2041, Vibration and shock Vo

29、cabulary ISO 2631-1:1997, Mechanical vibration and shock Evaluation of human exposure to whole-body vibration Part 1: General requirements ISO 8041, Human response to vibration Measuring instrumentation ISO 10326-1:1992, Mechanical vibration Laboratory method for evaluating vehicle seat vibration Pa

30、rt 1: Basic requirements ISO 13090-1:1998, Mechanical vibration and shock Guidance on safety aspects of tests and experiments with people Part 1: Exposure to whole-body mechanical vibration and repeated shock 3 Terms and definitions For the purposes of this document, the terms and definitions given

31、in ISO 2041 and the following apply. 3.1 whole-body vibration vibration transmitted to the body as a whole through the buttocks of a seated operator ASABE/ISO 5007:2003 MAY2006 (R2016ED) Copyright American Society of Agricultural and Biological Engineers 3 3.2 input spectral class tractors having si

32、milar ride vibration characteristics at the seat attachment point, grouped by virtue of various mechanical characteristics 3.3 unballasted mass mass of tractor in working order with full tanks and radiators, and including, where relevant, the mass of protective structures, but less the mass of the o

33、perator and without removable ballast weights, special equipment or other loads 3.4 operator seat portion of the machine provided for the purpose of supporting the buttocks and back of the seated operator, including any suspension system and other mechanisms provided, (for example, for adjusting the

34、 seat position) 3.5 frequency analysis process of arriving at a quantitative description of vibration amplitude as a function of frequency 3.6 measuring period time duration in which vibration data for analysis is obtained 4 Symbols and abbreviated terms See Table 1. ASABE/ISO 5007:2003 MAY2006 (R20

35、16ED) Copyright American Society of Agricultural and Biological Engineers 4 Table 1 Symbols and abbreviated terms 5 General 5.1 Evaluation criteria The laboratory simulated machine vertical vibration, specified as input spectral class, is based on representative measured data from tractors driven on

36、 a standardized test track and on data obtained from field tests under various conditions of use. The test input for a particular tractor class is a representative envelope for the machines within that class. Two criteria are used for the evaluation of seat vibration: a) the SEAT (seat effective amp

37、litude transmissibility) factor in accordance with ISO 10326-1:1992, 9.1, but with frequency weighting in accordance with ISO 2631-1; b) the maximum transmissibility ratio in the damping test in accordance with ISO 10326-1:1992, 9.2. ASABE/ISO 5007:2003 MAY2006 (R2016ED) Copyright American Society o

38、f Agricultural and Biological Engineers 5 5.2 Instrumentation and frequency analysis The measuring equipment shall be in accordance with ISO 8041 (type 1 instrument) and ISO 10326-1:1992, Clause 4. The frequency weighting shall include the effects of the band limiting filters and shall be in accorda

39、nce with ISO 2631-1. 5.3 Safety Safety precautions shall be in accordance with ISO 13090-1. Any compliant end-stops or devices normally fitted to production versions of the seat to be tested to minimize the effect of suspension over travel shall be in place for the dynamic tests. 6 Test conditions a

40、nd procedure 6.1 General The test conditions and test procedure shall be in accordance with ISO 10326-1:1992, Clauses 7 and 8. 6.2 Simulation of vibration (see ISO 10326-1:1992, Clause 5) A platform whose dimensions correspond approximately to those of the operators platform on an agricultural tract

41、or shall be mounted on a vibrator capable of generating vibration along the vertical axis (see Figure 1). The vibrator should be capable of simulating sinusoidal vibration having a peak-to-peak displacement of at least 7,5 cm at a frequency of 2 Hz (see 6.5.1). 6.3 Test seat 6.3.1 General The operat

42、or seat for the test shall be representative of series-produced models, with regard to construction, static and vibration characteristics and other features which may affect the vibration test result. 6.3.2 Run-in Before the test, the suspension seats shall be run in under conditions stipulated by t

43、he manufacturer. If the manufacturer does not state such conditions, then the seat shall be run in for a minimum of 5 000 cycles, with measurements at 1 000-cycle intervals. For this purpose, the seat shall be loaded with an inert mass of 75 kg (1%) and adjusted to the mass in accordance with the ma

44、nufacturers instructions. If the manufacturers instructions for seat adjustment are not available, then the seat shall be adjusted to the centre of the stroke. The seat and suspension shall be mounted on the platform of a vibrator, and a sinusoidal input vibration shall be applied to the platform at

45、 approximately the natural frequency of the suspension and inert mass. This input vibration shall have a peak-to-peak displacement sufficient to cause movement of the seat suspension over approximately 75% of its stroke. A platform peak-to-peak displacement of approximately 40% of the seat suspensio

46、n stroke is likely to achieve this. Care should be taken to ensure against overheating of the suspension damper during the running-in, for which forced cooling is acceptable. The seat shall be considered to have been run in if the value for the vertical transmissibility remains within a tolerance of

47、 5% when three successive measurements are performed under these run-in conditions. The time interval between two measurements shall be half an hour or 1 000 cycles, whichever is the lesser, with the seat being constantly run in. ASABE/ISO 5007:2003 MAY2006 (R2016ED) Copyright American Society of Ag

48、ricultural and Biological Engineers 6 6.3.3 Seat adjustment The seat shall be adjusted to the weight of the test person in accordance with the manufacturers instructions. The seat fore-aft adjustment shall be set to the centre of its adjustment range. For seats where the suspension stroke available

49、is unaffected by the adjustment for seat height or test-person weight, testing shall be performed with the seat adjusted to the centre of the stroke. For seats where the suspension stroke available is affected by the adjustment of the seat height or by test-person weight, testing shall be performed in the lowest position that provides the full working suspension stroke as specified by the seat manufacturer. When the inclination of the backrest is adjustable, it shall be set approximately upright,