Whole-body Vibration, Occupational Noise, and Postural Analysis in the Coffee Harvesting and Collection Stages Among Mechanized Equipment Operators
DOI:
https://doi.org/10.66069/ojspub.26820605Keywords:
Coffee growing, Ergonomics, Mechanization, Occupational risksAbstract
The objective of this study was to evaluate co-exposure to whole-body vibration (WBV), occupational noise, and perform postural analysis during the coffee harvesting and collection stages. Conducted at Fazenda São Manoel, in Muzambinho - MG, a TDI self-propelled harvester and a Valtra® tractor coupled to the AWZ collector were used. Six repetitions were performed for each work set, with different rotations and speeds (2x3), over 100 m per repetition. WBV and noise levels were quantified using a vibration meter (VIB008) and dosimeter (DOS 1000), in accordance with current standards NHO 01, NHO 09, and NR 15. Postural analysis was carried out using the OWAS system. The results indicated that the aren values exceeded the AL (0,5 ms-2) during harvesting in T1, T2, and T3, and the RVDV only during collection in T3. The occupational noise exposure limit (EL) exceeded 85dB(A) in both stages, and the postural analysis indicated class 2, suggesting regular postural adjustments. The use of coupled implements can worsen the operators’ condition, as they need to monitor the rear implements and the front driving of the tractor. It was found that the type of equipment and implement directly influences WBV levels, noise, and operators’ posture, with greater noise exposure, especially during the collection stage. Corrective and preventive measures, additional training, and medical control are necessary.
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