Studies on the Movable Type Crop-bed System in Greenhouse (2)

Development of the Movable Type Crop-bed System and its Performance Test

Abstract

The movable type crop-bed system to be newly developed was placed in a greenhouse covering the area of 83m², and composing of 33 growing boxes, 39m length wheel conveyer's circular line, the endless chain and the system controller. The growing boxes were connected eache other with the endless chain and were moved on the wheel conveyers line with a system controller. The weight of a growing box including soil and tomato under growing was about 160kg. The actual travelling speed of the growing box was lower than 8cm/s. The power required for driving this system was about 151W when being operated continuously at 8cm/s. The vibration on the growing box was less than 9.02cm/s² when it is as operated at 8cm/s. On this level of the vibration, no excessive effects of the vibration on the crop was observed.