SIST EN 13490:2002+A1:2009
(Main)Mechanical vibration - Industrial trucks - Laboratory evaluation and specification of operator seat vibration
Mechanical vibration - Industrial trucks - Laboratory evaluation and specification of operator seat vibration
1.1 This European Standard is applicable to operator seats used on industrial trucks as defined in
ISO 5053:1987 irrespective of power supply, type of equipment, lifting mechanism and tyres. It also applies to seats for other trucks not covered by ISO 5053:1987, e.g. variable-reach trucks and lowlift order picking trucks.
1.2 This European Standard specifies, in accordance with EN 30326-1, a laboratory method for measuring and evaluating the effectiveness of the seat suspension in reducing the vertical wholebody vibration transmitted to the operator of industrial trucks at frequencies between 1 Hz and 20 Hz.
1.3 This European Standard defines the input spectral classes required for the following industrial trucks. Each class defines a group of machines having similar vibration characteristics:
- Platform trucks, trucks rider-controlled, etc. with wheel mean diameter below 200 mm and highload non-rubber solid tyres (category 1)1)
- Reach trucks, articulated trucks, etc. with wheel mean diameter below 450 mm and high-load non-rubber solid tyres or cylindrical/conical base rubber solid tyres (category 2)1)
- Straddle trucks, trucks with wheel mean diameter below 645 mm and rubber solid or pneumatic tyres (category 3)1)
- Straddle trucks, trucks with wheel mean diameter between 645 mm and 900 mm and rubber solid or pneumatic tyres (category 4a)1)
- Straddle trucks, trucks with wheel mean diameter between 900 mm and 1200 mm and rubber solid or pneumatic tyres (category 4b)1)
- Trucks with wheel mean diameter between 1200 mm and 2000 mm and rubber solid or pneumatic tyres (category 5)1)
- All-terrain trucks (category 6) )
1.4 This European Standard specifies performance criteria to be achieved by seats intended for each of the above-mentioned groups of machines.
1.5 The tests and criteria defined in this European Standard are intended for operator seats used in industrial trucks of conventional design.
NOTE Other tests may be appropriate for machines with d
Mechanische Schwingungen - Flurförderzeuge - Laborverfahren zur Bewertung sowie Spezifikation der Schwingungen des Maschinenführersitzes
1.1 Diese Europäische Norm gilt für Maschinenführersitze, die auf Flurförderzeugen, wie sie in ISO 5053:1987 definiert sind, ohne Rücksicht auf ihre Antriebsenergie, die Art der Ausrüstung, die Hubmechanik und die Reifen eingesetzt werden. Sie gilt auch für Sitze von anderen, von ISO 5053:1987 nicht erfassten Flurförderzeugen, z. B. Stapler mit veränderbarer Reichweite, Niederhub¬kommissionierer.
1.2 Diese Europäische Norm legt in Übereinstimmung mit EN 30326 1 ein Laborverfahren zur Messung und Bewertung der Wirksamkeit der Sitzfederung fest, und zwar inwieweit der Sitz die vertikalen Ganzkörper-Schwingungen, die auf den Maschinenführer eines Flurförderzeugs übertragen werden, bei Frequenzen zwischen 1 Hz und 20 Hz verringert.
1.3 Diese Europäische Norm legt für die Prüf-Erregerschwingungen Spektralklassen fest, die für die folgenden Flurförderzeuge gelten. Jede Klasse umfasst eine Gruppe von Maschinen, die jeweils ähnliche Schwingungs¬eigenschaften haben:
Plattformwagen, fahrergesteuerte Flurförderzeuge usw. mit einem mittleren Raddurchmesser unter 200 mm und hochbelastbaren massiven, nicht aus Gummi bestehenden Reifen (Kategorie 1) ),
Schubgabel- und Schubrahmenstapler, Knickgelenkfahrzeuge usw. mit einem mittleren Raddurchmesser unter 450 mm und entweder hochbelastbaren massiven, nicht aus Gummi bestehenden Reifen oder Vollgummi¬reifen mit zylindrischer/konischer Radscheibe (Kategorie 2)1),
Spreizenstapler, Flurförderzeuge mit einem mittleren Raddurchmesser unter 645 mm und Vollgummi- oder Luftreifen (Kategorie 3)1),
Spreizenstapler, Flurförderzeuge mit einem mittleren Raddurchmesser zwischen 645 mm und 900 mm und Vollgummi- oder Luftreifen (Kategorie 4a)1),
Spreizenstapler, Flurförderzeuge mit einem mittleren Raddurchmesser zwischen 900 mm und 1 200 mm und Vollgummi- oder Luftreifen (Kategorie 4b)1),
Flurförderzeuge mit einem mittleren Raddurchmesser zwischen 1 200 mm und 2 000 mm und Vollgummi- oder Luftreifen (Kategorie 5)1)
Vibrations mécaniques - Chariots industriels - Evaluation en laboratoire et spécification des vibrations transmises à l'opérateur par le siège
1.1 La présente Norme européenne s'applique aux sièges d'opérateurs utilisés sur des chariots industriels tels
qu'ils sont définis dans l'ISO 5053:1987, quels que soient la source d'énergie, le type d'équipement, le mécanisme
de levage et les pneumatiques. Elle s'applique également aux sièges d'autres chariots non couverts
par l'ISO 5053:1987, par exemple les chariots rétractables de portée variable et les chariots à poste de conduite de
petite levée.
1.2 La présente Norme européenne spécifie, conformément à l'EN 30326-1, une méthode en laboratoire de
mesurage et d'évaluation de l'efficacité de la suspension du siège à réduire les vibrations verticales transmises au
corps entier de l'opérateur des chariots industriels à des fréquences comprises entre 1 Hz et 20 Hz.
1.3 La présente Norme européenne définit les classes de spectre d’excitation nécessaires pour les chariots
industriels suivants. Chaque classe définit un groupe de machines ayant des caractéristiques vibratoires similaires :
— les chariots à plate-forme recouvrante, les chariots à conducteur porté, etc. avec un diamètre de roues moyen
inférieur à 200 mm et des bandages pleins non caoutchoutés pouvant supporter des charges élevées
(catégorie 1) 1) ;
— les chariots à mât ou fourche rétractable, les chariots articulés, etc. avec un diamètre de roues moyen inférieur
à 450 mm et des bandages pleins non caoutchoutés pouvant supporter des charges élevées ou des bandages
pleins caoutchoutés à base cylindrique/conique (catégorie 2) 1) ;
— les chariots à fourche entre longerons, les chariots ayant un diamètre de roues moyen inférieur à 645 mm et des
pneumatiques pleins ou gonflables caoutchoutés (catégorie 3) 1) ;
— les chariots à fourche entre longerons, les chariots ayant un diamètre de roues moyen compris entre 645 mm
et 900 mm et des pneumatiques pleins ou gonflables caoutchoutés (catégorie 4a) 1) ;
Mehanske vibracije - Industrijska tovorna vozila - Laboratorijsko vrednotenje in specifikacije vibracij voznikovega sedeža
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Mehanske vibracije - Industrijska tovorna vozila - Laboratorijsko vrednotenje in specifikacije vibracij voznikovega sedežaMechanische Schwingungen - Flurförderzeuge - Laborverfahren zur Bewertung sowie Spezifikation der Schwingungen des MaschinenführersitzesVibrations mécaniques - Chariots industriels - Evaluation en laboratoire et spécification des vibrations transmises à l'opérateur par le siègeMechanical vibration - Industrial trucks - Laboratory evaluation and specification of operator seat vibration53.060Industrijski tovornjakiIndustrial trucks13.160Vpliv vibracij in udarcev na ljudiVibration and shock with respect to human beingsICS:Ta slovenski standard je istoveten z:EN 13490:2001+A1:2008SIST EN 13490:2002+A1:2009en,fr,de01-februar-2009SIST EN 13490:2002+A1:2009SLOVENSKI
STANDARD
SIST EN 13490:2002+A1:2009
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13490:2001+A1
November 2008 ICS 13.160; 53.060 Supersedes EN 13490:2001English Version
Mechanical vibration - Industrial trucks - Laboratory evaluation and specification of operator seat vibration
Vibrations mécaniques - Chariots industriels - Evaluation en laboratoire et spécification des vibrations transmises à l'opérateur par le siège
Mechanische Schwingungen - Flurförderzeuge - Laborverfahren zur Bewertung sowie Spezifikation der Schwingungen des Maschinenführersitzes This European Standard was approved by CEN on 20 August 2001 and includes Amendment 1 approved by CEN on 5 October 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13490:2001+A1:2008: ESIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 2 Foreword This document (EN 13490:2001+A1:2008) has been prepared by Technical Committee CEN/TC 231 "Mechanical vibration and shock", the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1, approved by CEN on 2008-10-05. This document supersedes EN 13490:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document." According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 3 Introduction The operators of industrial trucks are often exposed to a low-frequency vibration environment mainly caused by the movement of the vehicles over uneven ground. The seat constitutes the last stage of suspension before the driver. To be efficient at attenuating the vibration, the suspension seat should be chosen according to the dynamic characteristics of the vehicle. The performance criteria provided in this European Standard have been set in accordance with what is attainable using what is at present the best design practice. They do not necessarily ensure the complete protection of the operator against effects of vibration and shock. They may be revised in the light of future developments and improvements in suspension design. Performance criteria obtained in accordance with this European Standard may be useful to manufacturers of industrial trucks when selecting seats for possible use in their products. However, to satisfy fully the requirements of the !EU" Machinery Directive it is important for suppliers of mobile machinery to demonstrate that the seat supplied reduces the vibration in the specified machine to the lowest level that can be reasonably achieved. The test inputs included in this European Standard are based on a very large number of measurements taken in situ on industrial trucks while they were used under severe but typical operating conditions. The test method is based on EN 30326-1, which is a general method applicable to seats for different types of vehicles. 1 Scope 1.1 This European Standard is applicable to operator seats used on industrial trucks as defined in
ISO 5053:1987 irrespective of power supply, type of equipment, lifting mechanism and tyres. It also applies to seats for other trucks not covered by ISO 5053:1987, e.g. variable-reach trucks and lowlift order picking trucks. 1.2 This European Standard specifies, in accordance with EN 30326-1, a laboratory method for measuring and evaluating the effectiveness of the seat suspension in reducing the vertical wholebody vibration transmitted to the operator of industrial trucks at frequencies between 1 Hz and 20 Hz. 1.3 This European Standard defines the input spectral classes required for the following industrial trucks. Each class defines a group of machines having similar vibration characteristics: Platform trucks, trucks rider-controlled, etc. with wheel mean diameter below 200 mm and highload non-rubber solid tyres (category 1)1) Reach trucks, articulated trucks, etc. with wheel mean diameter below 450 mm and high-load non-rubber solid tyres or cylindrical/conical base rubber solid tyres (category 2)1) Straddle trucks, trucks with wheel mean diameter below 645 mm and rubber solid or pneumatic tyres (category 3)1) Straddle trucks, trucks with wheel mean diameter between 645 mm and 900 mm and rubber solid or pneumatic tyres (category 4a)1) Straddle trucks, trucks with wheel mean diameter between 900 mm and 1 200 mm and rubber solid or pneumatic tyres (category 4b)1) Trucks with wheel mean diameter between 1 200 mm and 2 000 mm and rubber solid or pneumatic tyres (category 5)1) SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 4 All-terrain trucks (category 6)1)
1.4 This European Standard specifies performance criteria to be achieved by seats intended for each of the above-mentioned groups of machines. 1.5 The tests and criteria defined in this European Standard are intended for operator seats used in industrial trucks of conventional design. NOTE Other tests may be appropriate for machines with design features that result in significantly different vibration characteristics. 1.6 This European Standard is only concerned with the vertical component of whole-body vibration. Vibration which reaches the operator other than through his seat, for example that sensed by his feet on the platform or control pedals or by his hands on the steering-wheel, is not covered. 2 Normative 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." !deleted text" EN 30326-1:1994, Mechanical vibration — Laboratory method for evaluating vehicle seat vibration – Part 1: Basic requirements (ISO 10326-1:1992) !EN ISO 8041, Human response to vibration — Measuring instrumentation (ISO 8041:2005)" EN ISO 13090-1, 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 (ISO 13090-1:1998) ISO 2631-1:1997, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration – Part 1: General requirements ISO 5053:1987, Powered industrial trucks — Terminology ISO 5805:1997, Mechanical vibration and shock — Human exposure — Vocabulary !deleted text" 3 Terms and definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this European Standard, the terms and definitions given in ISO 5805:1997 and the following apply. 3.1.1 whole-body vibration vibration transmitted to the body as a whole through the buttocks of a seated operator
1) See !EN 13059". SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 5 3.1.2 input spectral class machines having similar ride vibration characteristics at the seat attachment point, grouped by virtue of various mechanical characteristics 3.1.3 operator seat that 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 seat position) 3.1.4 frequency analysis process of arriving at a quantitative description of a vibration amplitude as a function of frequency 3.1.5 measuring period time duration in which vibration data for analysis is obtained 3.2 Symbols and abbreviations For the purposes of this European Standard, the following symbols and abbreviations apply: aP(fr) unweighted r.m.s. value of the measured vertical acceleration at the platform at the resonance frequency a*P12, a*P34 unweighted r.m.s. value of the target vertical acceleration at the platform under the seat (see Figure 1) between frequencies f1 and f2, or f3 and f4 aP12, aP34 unweighted r.m.s. value of the measured vertical acceleration at the platform between frequencies f1 and f2, or f3 and f4
aS(fr) unweighted r.m.s. value of the measured vertical acceleration at the seat disc at the resonance frequency a*wP12, a*wP34 weighted r.m.s. value of the target vertical acceleration at the platform between frequencies f1 and f2, or f3 and f4 awP12 weighted r.m.s. value of the measured vertical acceleration at the platform between frequencies f1 and f2
awS12 weighted r.m.s. value of the measured vertical acceleration at the seat disc (see Figure 1) between frequencies f1 and f2 Be
resolution bandwidth, Hz EM
Earth-moving Machinery f
frequency, Hz fr
frequency at resonance GP(f)
measured PSD of the vertical vibration at the platform (seat base) G*P (f)
target PSD of the vertical vibration at the platform (seat base) G*PL (f)
lower limit for the measured PSD of the vertical vibration at the platform (seat base) SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 6 G*PU (f)
upper limit for the measured PSD of the vertical vibration at the platform (seat base) H(fr)
transmissibility at resonance HP
high-pass filter IT
Industrial Truck LP
Low-pass filter PSD
Power spectral density expressed as acceleration squared per unit bandwidth, (m/s2)2/Hz r.m.s.
root mean square SEAT
Seat Effective Amplitude Transmissibility factor Ts
sampling time, s. SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 7
Key 1 Seat backrest 2 Seat pan 3 Accelerometer disc on the seat pan (S) 4 Seat suspension 5 Platform 6 Accelerometer on the platform (P) 7 Base of the seat Provision shall be made for adjustment of the angles of the knees, the ankles and the backrest (if possible) (see 5.2). Figure 1 — Posture of the test person SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 8 4 General 4.1 The laboratory simulated machine vertical vibration, specified as input spectral class, is based on representative measured data from machines in severe but typical working conditions. The input spectral class is a representative envelope for the machines within the class, therefore the laboratory test is more severe than the typical vibration environment of any specific machine. 4.2 Two criteria are used for the evaluation of seat: a) the Seat Effective Amplitude Transmissibility (SEAT) factor according to EN 30326-1:1994, 9.1, but with frequency weighting according to ISO 2631-1, b) the maximum transmission ratio in the damping test according to EN 30326-1:1994, 9.2. 4.3 The measuring equipment shall be in accordance with !EN ISO 8041" and EN 30326-1:1994, Clauses 4 and 5. The frequency weighting shall include the effects of the band limiting filters, and be in accordance with ISO 2631-1 (see !EN ISO 8041"). 4.4 Safety precautions shall be in accordance with EN 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 overtravel shall be in place for the dynamic tests. 5 Test conditions and test procedure The test conditions and test procedure shall be in accordance with EN 30326-1:1994, Clauses 7 and 8. 5.1 Simulation of vibration See EN 30326-1:1994, Clause 5. A platform, the dimensions of which correspond approximately to those of the operator's platform of an industrial truck, shall be mounted on a vibrator which is capable of generating vibration along the vertical axis (see Figure 1). 5.2 Test seat The operator 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 results. Before the test, the suspension seats shall be run-in under conditions stipulated by the manufacturer. If the manufacturer does not state such conditions, then the seat shall be run-in for 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 and adjusted to the mass in accordance with the manufacturer's instructions. 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 approximately the suspension natural frequency. 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 suspension 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. SIST EN 13490:2002+A1:2009
EN 13490:2001+A1:2008 (E) 9 The seat shall be considered to have been run-in if the value for the vertical transmissibility remains within a tolerance of ± 5 % when three successive measurements are performed under the condition described above. The time interval between two measurements shall be half an hour, or 1 000 cycles (whichever is less), with the seat being constantly run-in. The seat shall be adjusted to the weight
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.