Operator Exposure to Whole-Body Vibration in Timber Extraction with Grapple Skidder

Abstract

Purpose

The objective was to evaluate the occupational vibration acting under grapple skidder operators during skidding operation of the Eucalyptus tree bundles.

Methods

The collection of the whole-body vibration data was based on the methodology recommended by the International Organization for Standardization (ISO 8041 and ISO 2631). Then, technical procedure for obtaining vibration data from the operators was performed using a Larson Davis tri-axial vibration meter, model HVM 200 and a tri-axial ICP accelerometer of the seat pad type.

Results

When comparing the values of the weighted acceleration and VDV with the limits established by the European Directive, it is verified that in both tests, the measured values are higher than the one expected by the respective regulation. Compared to the ISO 2631 criteria, both tests provided results located in the danger zone.

Conclusion

The values obtained indicate that occupational exposure may cause health risks to grapple skidder operators. The results showed the need of actions that can minimize the transmission of vibration to the operators due to the level being above the guidelines, despite all the technology used by manufacturers of machinery for harvesting.

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Acknowledgements

To the National Council of Scientific and Technological Development (CNPq) for the financing of the research (Universal Announcement no 01/2016), process 400500/2016-7.

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Correspondence to Ana C Cazani.

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Cazani, A.C., Miyajima, R.H., Simões, D. et al. Operator Exposure to Whole-Body Vibration in Timber Extraction with Grapple Skidder. J. Vib. Eng. Technol. (2020). https://doi.org/10.1007/s42417-020-00219-0

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Keywords

  • Ergonomics
  • Lumbar disc disease
  • Musculoskeletal injury
  • Mechanical vibration
  • Occupational health
  • Forest operation