One of the major difficulties met by the employer when it has to quantify the WBV risk is to have information related to the real operative conditions of his/her employees. To use the data presents in literature (concerning the same machines used in the farm) to evaluate a generic exposure to the WBVs, doesn't mean to quantify the real dose of vibration to which the employees are submitted. In fact, in literature all the operational conditions are not contemplated and this depend from many factors (as for instance: mass and geometry of the vehicle, speed of advancement, pressure of the tires, type of ground, performed operational cycle,…). Objective of the present job has been to analyze the values of acceleration got on the platform, with different characteristics of the surfaces and different configurations of the tractors, with the purpose to identify some rules that could be used to evaluate the vibration exposure of the driver, always using the same type of artificial track. For this purpose two tractors with equal power, capacity and mass but with different tires, have been submitted to vibrational test with different speeds of advancement on paths with different profile, including the artificial track (ISO 5008). To be free from the masses of the operators and from the fact that the seats were new of factory, the accelerations have been measured on the platform of the cabin. The obtained data in these tests allow to observe that the values of acceleration on the test track (in the same configuration) are always higher and therefore comprehensive of acceleration values measured in the real operative conditions on the field. The investigation let to foresee the possibility to define a methodology that allows the manufacturer to declare the values of acceleration of its machines when they operate under all the conditions and/or configurations using the data obtained by simple displacements performed on artificial test track. On the other hand the tests allow the employer to obtain the values of exposure of its employees when they operate under all the conditions using the data furnished by the manufacturers.

Whole Body Vibration (WBV): Comparison Among Field Data and Standard Test Track (ISO 5008) in Different Operative Conditions

CALVO, Angela;
2009-01-01

Abstract

One of the major difficulties met by the employer when it has to quantify the WBV risk is to have information related to the real operative conditions of his/her employees. To use the data presents in literature (concerning the same machines used in the farm) to evaluate a generic exposure to the WBVs, doesn't mean to quantify the real dose of vibration to which the employees are submitted. In fact, in literature all the operational conditions are not contemplated and this depend from many factors (as for instance: mass and geometry of the vehicle, speed of advancement, pressure of the tires, type of ground, performed operational cycle,…). Objective of the present job has been to analyze the values of acceleration got on the platform, with different characteristics of the surfaces and different configurations of the tractors, with the purpose to identify some rules that could be used to evaluate the vibration exposure of the driver, always using the same type of artificial track. For this purpose two tractors with equal power, capacity and mass but with different tires, have been submitted to vibrational test with different speeds of advancement on paths with different profile, including the artificial track (ISO 5008). To be free from the masses of the operators and from the fact that the seats were new of factory, the accelerations have been measured on the platform of the cabin. The obtained data in these tests allow to observe that the values of acceleration on the test track (in the same configuration) are always higher and therefore comprehensive of acceleration values measured in the real operative conditions on the field. The investigation let to foresee the possibility to define a methodology that allows the manufacturer to declare the values of acceleration of its machines when they operate under all the conditions and/or configurations using the data obtained by simple displacements performed on artificial test track. On the other hand the tests allow the employer to obtain the values of exposure of its employees when they operate under all the conditions using the data furnished by the manufacturers.
2009
XXXIII CIOSTA - CIGR V Conference 2009
Reggio Calabria
June 17-19
XXXIII CIOSTA - CIGR V Conference 2009. “Technology and management to ensure sustainable agriculture, agro-systems, forestry and safety”
Giametta G., Zimbalatti G.
2
1487
1491
9788875830311
http://www.ciosta.unirc.it/proceedings.htm
WBV; tractor; standard track
R. Deboli; A. Calvo; C. Preti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/131141
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