U03-040
Agricultural wheelded tractors. Operator'S seat. Laboratory measurement of transmitted vibration.
<p>ISO 5007:2003 specifies, in accordance with 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 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 characteristics. </p> <p>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 operator's feet on the platform or control pedals or hands on the steering wheel).</p>
-
1 Domaine d'application1
-
2 Références normatives1
-
3 Généralités1
-
4 Définitions1
-
5 Symboles et abréviations2
-
6 Instrumentation et analyse en fréquence2
-
7 Banc d'essai de vibration4
-
8 Conditions d'essai4
-
9 Vibrations d'entrée5
-
10 Mode opératoire5
-
11 Applicabilité du résultat d'essai6
-
12 Rapport d'essai6
-
13 Équations des courbes de densité spectrale de puissance (DSP)6
- Figures
-
1 Axe de mesurage8
-
2 Banc d'essai de vibration9
-
3 Conception du disque semi-rigide9
-
4 Réponse du filtre dans le mode vertical (axe Z)10
-
5 Courbe de DSP pour les tracteurs de classe 111
-
6 Courbe de DSP pour les tracteurs de classe 212
-
7 Courbe de DSP pour les tracteurs de classe 313
COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.
Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!
Request your free, no-obligation live demo
I discover COBAZ