Obremenitve voznika gozdarskega kamiona MAN TGS 18.500 z ropotom in tresenjem

Mlakar, Matic (author), Poje, Anton (mentor)

Diplomska naloga obravnava obremenitve s tresenjem in ropotom voznika gozdarskega kamiona ter vpliv mase sortimenta in njegove oddaljenosti od nakladalne naprave na jakost tresenja. Meritve so potekale pri uporabi gozdarskega kamiona MAN TGS 18.500, in sicer 6 delovnih dni za ugotavljanje sestave delovnega časa in obremenitev s tresenjem in ropotom ter en dan za ugotavljanje vplivov na jakost tresenja., pri čemer so bile vrednosti primerjane z dopustnimi mejami. Rezultati so pokazali, da obremenitev s tresenjem po RMS kazalniku v osemurnem povprečnem delovniku presega mejno vrednost v X smeri (RMS X = 1,51 m/s2), po VDV kazalniku pa v Y smeri (VDV Y = 44,08 m/s1,75). Obremenitve z ropotom v povprečnem osemurnem delovniku po LAekv kazalniku (80,4 dB(A)) presegajo spodnjo opozorilno vrednost v dveh dnevih, po kazalniku LCpeak pa mejno vrednost (141,8 dB(C)). Voznik je s tresenjem in ropotom najbolj obremenjen pri nakladanju in razkladanju lesa ter pri prazni vožnji po makadamu in premikih med nakladanjem. Vpliv volumna sortimenta na jakost tresenja ni bil enoten, saj je jakost tresenja z volumnom značilno naraščala v smeri Y pri oddaljenostih 4 in 6 m od nakladalne naprave, v Z smeri pa se je pri oddaljenosti 6 m značilno zmanjševala. Oddaljenost sortimenta od nakladalne naprave je pomembneje vplivala na jakost tresenja, saj so bile v smereh X in Z ugotovljene statistično značilne razlike med oddaljenostmi, pri čemer je bila jakost tresenja pri 2 m značilno nižja kot pri 4 in 6 m, v smeri Y pa razlike niso bile statistično značilne. Za preprečevanje poklicnih bolezni in zmanjševanje obremenjenosti z ropotom in tresenjem je treba nameniti pozornost najbolj obremenjujočim delovnim operacijam ter tudi načinu zlaganja sortimentov pri spravilu lesa, nakladanju in razkladanju, in sicer morajo biti sortimenti čim bližje nakladalni napravi še posebej tisti z velikim volumnom.

• Language: Slovenian
• Keywords: gozdarski kamion, ropot, tresenje, obremenitev
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [M. Mlakar]
• Year: 2026
• PID: 20.500.12556/RUL-188428
• UDC: 630*30(043.2
• COBISS.SI-ID: 292538115
• Publication date in RUL: 23.09.2026

Secondary language

• Language: English
• Title: Exposure of a MAN TGS 18.500 forestry truck driver to noise and whole-body vibrations

Abstract

This thesis examines whole-body vibration (WBV) and noise exposure of a forestry truck driver, as well as the effect of the load's mass and its distance from the crane on the intensity of vibrations. Measurements were conducted when using a MAN TGS 18.500 forestry truck, where 6 days were spent determining work composition, WBV and noise exposure, during which the values were compared to permissible limits, and one day was spent assessing factors on vibration strength. The results showed that vibration exposure, based on the RMS indicator for an average eight-hour workday, exceeded the limit value in the X direction (RMS X = 1,51 m/s2), while according to the VDV indicator, the limit was exceeded in the Y direction (VDV Y = 44,08 m/s1,75). Noise exposure during an average eight-hour working day, based on the LAeq indicator (80,4 dB(A)), exceeded the lower exposure action value on two days, while the LCpeak indicator exceeded the limit value (141,8 dB(C)). The driver exposure to WBV and noise is highest during loading, unloading, empty driving on gravel roads and vehicle shifts during loading. The effect of log volume on vibration intensity was not consistent, as vibration intensity increased significantly with log volume in the Y direction at distances of 4 and 6 m from the loading device, while in the Z direction it decreased significantly at a distance of 6 m. The distance of the logs from the loading device had a more pronounced effect on vibration intensity, with statistically significant differences between distances in the X and Z directions. Vibration intensity at 2 m was significantly lower than at 4 and 6 m, whereas no statistically significant differences were found in the Y direction. To prevent occupational diseases and reduce exposure to noise and vibration, particular attention should be paid to the most demanding work operations and to the arrangement of logs during timber extraction, loading and unloading. Logs should be positioned as close to the loader as possible, particularly those with a large volume.

• Keywords: forestry truck, noise, whole-body vibrations, exposure