Abstract
This paper describes a new type of a vehicle mechanism using in greenhouse. The feature of this vehicle mechanism is that normal tires use for front wheels and rotary crawler system for rear driving mechanism. As the passage in greenhouses is very narrow and bad to move, turning and passing performance is important. More over, the vehicle is developed as a part of automatic harvesting system in greenhouse, so simple turning operation and robust passing ability are required. In this paper, mechanism of the proposed vehicle, strategy of turning, comparison with other type vehicle is explained.
