鄭榮瑞 施清田 陳萬福 盧子淵
Studies on the Clamping-type of Peanut Harvesting Combine
J. J. Cheng, C. T. Shi, W. F. Chen and T. I. Lu
Peanut is one of the most important oil crops in Taiwan. In order to decrease peanut harvesting cost and save labor, the once-over harvesting of peanut combine is urgently necessary. The objective of this study was to develop and improve a suitable once-over harvester for peanut. The physical properties of peanut were included into the improvement of threshing system. A clamping-type combine was developed at Tainan DAIS in 1988. The basic components of this machine include pulling-up and lifting system, threshing system, clearing system, package system and crawler. The best threshing efficiency was obtained under the condition when the clamping location is set up at 17 cm from the clamping belt to the threshing cylinder center, the threshing cylinder speed is set up at 450-500 rpm and clamping belt speed is set up at 90-110 rpm. The machine equipped with a 25 HP diesel engine. The harvesting width is 1 met. The operation steps include pulling-up of the plants, threshing, clearing and packing. The performance of this machine in the field indicated that 99.2% of the plants were removed, 1.8% of the pods lost in the ground, 2.0% of the pods dropped on the ground, 2.5% of the pods were unthreshed, 9.9% of the harvested pods were with peg, 3.2% of the pods were damaged. The harvested pods were with 6.4% of plant material or debris. The working capacity was 8-10 hrs/ha.