PRODUCED LEVEL OF TRACTOR VIBRATIONS DURING OPERATION ON VARIOUS AGRICULTURAL SURFACES THAT AFFECT THE BODY OPERATOR

U radu su izneseni rezultati istraživanja mjerenja razine traktorskih vibracija koje djeluju na trup rukovatelja pri različitim agrotehničkim podlogama (asfalt, makadam i trava) u skladu s propisanim normama HRN ISO 2631-1 i HRN ISO 2631-4. Sva mjerenja su izvedena na traktoru proizvođača Landini tipa Powerfarm 100 na proizvodnim površinama i pristupnim cestama srednje Poljoprivredno i veterinarske škole Osijek. Mjerenja su izvedena uređajem MMF VM30. Iz rezultata je vidljivo da pri različitim agrotehničkim podlogama postoje vibracije različitog intenziteta koje utječu na trup rukovatelja. Najviše vrijednosti zabilježene su na travi, dok su najslabije vibracije koje se prenose na trup rukovatelja izmjerene na asfaltu.This paper contains the results of measuring produced level of tractor vibrations during operation on various agricultural surfaces that affect the body of operator in accordance with prescribed norms HRN ISO 2631-1 i HRN ISO 2631-4. All measurements were carried out on the tractor Landini Powerfarm 100 in the production areas and access roads of Agricultural and veterinary school in Osijek. Measurement device was MMF VM30. The results show that different surfaces produce vibrations of different intensity affecting the body of operator. The highest values were measured on the grass surfaces, while the lowest vibrations were produced on asphalt