Abstract
SUMMARY: The noise generated by agricultural mechanization brought side effects, and one of them is the damage the hearing of the operator of agricultural machinery. The NR-15 establishes the limits of tolerance for continuous noise, and exposure to the maximum allowable noise level of 115 dB (A) for individuals who are not using individual protection equipment and 85 dB (A), considering a shift work of 8 h. The objective was to study the influence of working speed and soil condition in agricultural operations in the determination of sound power levels emitted by the tractor. The study was conducted at the Center for Agricultural Sciences - UNIVASF, Petrolina / PE using a Valtra tractor model 785 TDA cabin and meter without the sound power level. We evaluate the sound power level of the tractor in five speeds (3.0, 5.0, 8.7, 10.7 and 13.0 km h -1 ) on prepared soil and ground covered with weeds, with the equipment: lightweight tandem grid, grid light off-set with discs of 55.8 cm, grade mild off-set with discs of 60.8 cm, chisel plow, mower and distributor commuting. The most significant amounts were found in the tractor and plow in operation, noting that the requirement of increased power in the engine sound power level.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
