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Berggren, Filip, 2018. Tidsstudie av timmerbilars lastningstid beroende på avstånd mellan timmerbilen och virkesvältan. First cycle, G2E. Skinnskatteberg: SLU, School for Forest Management

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Abstract

The safety distance between the roads to the pile is an area that is often discussed. Loading work with logging trucks is relatively unknown and the study was necessary to provide new knowledge to the subject. In this thesis, the main purpose is to investigate whether the time spent on loading is affected by a different distance between the logging truck and the pile.

The study compared two logging trucks with two different cranes, one with a short crane of 8.1 meters and the other with a long crane of 9.6 meters. The logging truck loaded logs from 1 to 4 meters from the outer edge of the logging truck to the front of the pile, to see how time affected by the different distances. How the distances are measured may vary between different studies, but I chose to measure from the logging trucks sideline to the center of the pile.

To obtain a reference value, each driver could place the logging truck at any distance they preferred. The driver with the shorter crane chose 1.5 meters while the driver with the longer crane chose to place the logging truck at 1.8 meters distance.

The biggest time increase was at four meters distance, which was an increase of 48 percent. The result also shows that the time was increased more the longer the distance was to the pile. Between three and four meters distance there was a significant difference in time spent on both logging trucks.

Because the drivers only drove their own crane, the study results did not show any statistically-guaranteed differences between the short and the long crane. When the drivers only drove one crane type, it was not possible to determine if the crane or driver made the time difference in the study.

The study was conducted under favorable conditions. The time spent on loading is probably greater in reality than the study shows. The effect of an increased distance between the logging trucks and the pile is also larger in practice than during the study. However, at longer distances than three meters, the time increased drastically.

Main title:Tidsstudie av timmerbilars lastningstid beroende på avstånd mellan timmerbilen och virkesvältan
Authors:Berggren, Filip
Supervisor:Ersson, Back Tomas
Examiner:Sundstedt, Eric
Series:Examensarbete / SLU, Skogsmästarprogrammet
Volume/Sequential designation:2018:11
Year of Publication:2018
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:SY002 Forest Management - Bachelor's Programme 180 HEC
Supervising department:(S) > School for Forest Management
Keywords:trafiksäkerhet, allmänna vägar, kostnadsbesparingar
URN:NBN:urn:nbn:se:slu:epsilon-s-9599
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-9599
Subjects:Handling, transport, storage and protection of forest products
Forestry production
Language:Swedish
Deposited On:11 Jul 2018 11:02
Metadata Last Modified:20 May 2020 12:53

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