龙眼树枝切割力学性能试验

In order to obtain the cutting property of longan branches，three branch varieties were selected to perform the reciprocating cutting experiment with a self-made cutting test bench. According to the continuous curve of cutting force measured by the accurate micro-controlled electronic universal testing machine, the effect of varieties, tree's age, diameter and moisture content on peak cutting force and cutting power consumption of moving cutter were obtained. The results showed that when cut off the branches of the same diameter, peak cutting force and cutting power of cutter for "Chu Liang" and "Hua Lu Guang Yan" were both significantly increased compared with "Shi Xia"; greater peak cutting force and cutting power were consumed for cutting 40-year old branches than those of 30-year old branches; there was significantly positive power function correlation between branch diameter and peak cutting force as well as cutting power of cutter; when branches' moisture content of 37.07%, the minimum peak cutting force and cutting power were consumed. The conclusions provide foundational parameters to develop mechanical pruning machine.