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1、 Reference number ISO 10326-1:1992/Amd.1:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 10326-1 First edition 1992-11-15 AMENDMENT 1 2007-09-15 Mechanical vibration Laboratory method for evaluating vehicle seat vibration Part 1: Basic requirements AMENDMENT 1 Vibrations mcaniques Mthode en laboratoire
2、pour lvaluation des vibrations du sige de vhicule Partie 1: Exigences de base AMENDEMENT 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or
3、networking permitted without license from IHS -,-,- ISO 10326-1:1992/Amd.1:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed
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6、 is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
7、and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland
8、ii ISO 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 103
9、26-1:1992/Amd.1:2007(E) ISO 2007 All rights reserved iii 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 ISO technical committee
10、s. 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 closely with the Inter
11、national Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International St
12、andards adopted by the technical committees are circulated to the member bodies for voting. Publication 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 document may be the sub
13、ject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO 10326-1:1992 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 231, Mechanical vibration and shock, in collaboration with Technical Com
14、mittee ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 4, Human exposure to mechanical vibration and shock, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Copyright International Organization for Standardization Pro
15、vided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Lic
16、ensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10326-1:1992/Amd.1:2007(E) ISO 2007 All rights reserved 1 Mechanical vibration Laboratory method for evaluating vehicle seat vibration
17、 Part 1: Basic requirements AMENDMENT 1 Page iii, Introduction Replace the existing text with the following: Drivers, staff and passengers of vehicles (land, air or water) and mobile machinery are exposed to mechanical vibration which interferes with their comfort, working efficiency and, in some ci
18、rcumstances, safety and health. Such vehicles and mobile machines are often fitted with seats that are designed and made in accordance with current state-of-the-art with regard to their capacity to control or reduce transmitted whole-body vibration. To assist in the development of such seats, specif
19、ic test codes have been, or are being, produced to evaluate the performance of seats. The following basic requirements have therefore been developed to give guidance for the specification of laboratory testing of vibration transmission through a vehicle seat to the occupant, and for the evaluation o
20、f the ability of a seat to control the shock arising from over-travel of the suspension. Page 1, Clause 1, Scope Replace the last sentence of the first paragraph with the following: These methods for measurement and analysis make it possible to compare test results from different laboratories for eq
21、uivalent seats. Page 1, Clause 2, Normative references Replace this clause with the following: 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
22、 document (including any amendments) applies. ISO 2631-1, Mechanical vibration and shock Evaluation of human exposure to whole-body vibration Part 1: General requirements ISO 5347 (all parts), Methods for the calibration of vibration and shock pick-ups ISO 8041, Human response to vibration Measuring
23、 instrumentation ISO 16063 (all parts), Methods for the calibration of vibration and shock transducers Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo repr
24、oduction or networking permitted without license from IHS -,-,- ISO 10326-1:1992/Amd.1:2007(E) 2 ISO 2007 All rights reserved Page 1, Clause 3, General Replace the second paragraph with the following: The primary test for the vibration characteristics of the seat involves measurements under conditio
25、ns which simulate the range of actual uses of a vehicle or machine. For applications where occasional severe shocks or transient vibration can be expected (and in particular for seats whose suspension travel is short, such as those intended for use on industrial trucks or off-road vehicles), in addi
26、tion to the damping test, a secondary test is required to ensure that the seat responds acceptably. Machinery- specific standards shall give guidance on the need for this secondary test which comprises a method for assessing the accelerations associated with impact with the suspension end-stops when
27、 over-travel occurs. The test is described in Annex A. Page 3, Subclause 4.4, Calibration Replace the first paragraph with the following: The instrumentation shall be calibrated in accordance with ISO 16063-1 and, depending on the type of measuring system used, to the relevant part of ISO 5347 or IS
28、O 16063. Delete footnote 1). Page 4, Note 9 Replace this Note with the following full text: In some cases, such as suspensions with short travel as used on industrial trucks or off-road vehicles, a further test may be needed to ensure that, under conditions of excessive suspension travel, the suspen
29、sion end-stops are so constructed as to keep the resulting shock acceleration at an acceptable level. Annex A contains the specification for such a test which may be specified in more detail in an application standard (type-C standard) if needed. Page 7, Annex A, Bibliography Replace this annex with
30、 the following Annex A. Then add the new Bibliography. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or networking permitted without license
31、 from IHS -,-,- ISO 10326-1:1992/Amd.1:2007(E) ISO 2007 All rights reserved 3 Annex A (informative) Test method for assessing the ability of a seat suspension to control the effects of impacts caused by over-travel A.1 Introduction This annex specifies a laboratory test method for measuring and eval
32、uating the effectiveness of a suspension seat in controlling the whole-body vertical vibration transmitted to the operator of an industrial truck or off-road vehicle in conditions that can cause excessive suspension travel. The test method may be applicable to operator seats in the following types o
33、f vehicles: industrial trucks; earth-moving machines (restricted to classes defined in ISO 7096); agricultural tractors; forestry forwarders. At the discretion of the standards committee responsible for the relevant type-C standard, the test method may supplement, but does not replace, the tests for
34、 vertical vibration isolation defined in, for example, ISO 5007, ISO 7096 and EN 13490. A.2 Symbols aarb Arbitrary acceleration amplitude applied to the seat base (vibration exciter platform), in metres per second squared aw Wk frequency-weighted acceleration, in metres per second squared (Wk is def
35、ined in ISO 2631-1) f Frequency of the input vibration, in hertz t Time, in seconds t0 Time at the start of the test stimulus t1 Time at the end of the test stimulus tM Time at the end of the measurement VDV Vibration dose value, in metres per second to the power of 1,75 x Displacement of the seat b
36、ase (vibration exciter platform), in metres x ? Acceleration of the seat base (vibration exciter platform), in metres per second squared L2,5 Seat load vibration dose value of 2,5 m/s1,75 (L2,5 = 2,5 m/s1,75) B2,5 Seat base vibration dose value corresponding to a seat load vibration dose value of 2,
37、5 m/s1,75 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10326-1:1992/Amd.1:2007(E
38、) 4 ISO 2007 All rights reserved L7,5 Seat load vibration dose value of 7,5 m/s1,75 (L7,5 = 7,5 m/s1,75) B7,5 Seat base vibration dose value corresponding to a seat load vibration dose value of 7,5 m/s1,75 L1, B1 Seat load and seat base vibration dose values for the measurement with a load VDV in th
39、e range 2,375 m/s1,75 to 2,5 m/s1,75 L2, B2 Seat load and seat base vibration dose values for the measurement with a load VDV in the range 2,5 m/s1,75 to 2,625 m/s1,75 L3, B3 Seat load and seat base vibration dose values for the measurement with a load VDV in the range 7,125 m/s1,75 to 7,5 m/s1,75 L
40、4, B4 Seat load and seat base vibration dose values for the measurement with a load VDV in the range 7,5 m/s1,75 to 7,875 m/s1,75 R Rate of increase of the load VDV relative to the base VDV between load VDVs of 2,5 m/s1,75 and 7,5 m/s1,75 A.3 Test conditions and test procedure A.3.1 Seat mounting Th
41、e seat to be tested shall be mounted on a horizontal platform of a vibration exciter, which shall have movements in the vertical direction (z-axis), as specified in the application standards. The dimensions of the mounting platform shall be sufficient to adequately support the seat. The vibration ex
42、citer shall be capable of generating sinusoidal peak-to-peak displacement of at least 60 mm at 2 Hz. A.3.2 Seat adjustment The seat shall be run in as specified by its manufacturer. The seat shall be adjusted to a mid-ride position appropriate to the mass of a test person of 98 kg (equivalent to a l
43、oad on the seat of 75 kg) in accordance with the seat manufacturers instructions. If no instructions are available, the seat shall be adjusted to the force mid-point of the suspension force-deflection characteristic measured over a range from zero to 1 500 N with the seat in a specified configuratio
44、n. NOTE Many seats have mass adjusters that are marked according to the total driver (operator) mass, but only approximately 75 % of this mass is actually carried by the seat. The seat shall be adjusted to the desired mid-ride position and then subjected to a low peak-to-peak (less than 5 mm) sinuso
45、idal vibration at the base of the seat at a frequency approximately three times the seat resonance frequency. This process shall be repeated as necessary until the seat settles to the intended mid-ride position. With seats where the stroke available is unaffected by the adjustment for seat height or
46、 test person mass, testing shall be performed with the seat adjusted to the centre of the stroke. With seats where the stroke available is affected by the adjustment of the seat height or by test person mass, testing shall be performed at both the maximum and minimum height adjustment with the seat
47、required to pass both tests. The manufacturer should specify what influence different combinations of mass and seat height adjustments will have on the stroke available during testing. The fore and aft adjustment of the seat shall be in the centre of the available travel. Copyright International Org
48、anization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Spiller, Kevin Not for Resale, 10/07/2007 22:26:48 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10326-1:1992/Amd.1:2007(E) ISO 2007 All rights reserved 5 The inclination of the cushion surface (if adjustable) shall be nominally horizontal. Where the inclination of the backrest is adjustable, the angle shall be approximately 10