The Study on the Vibrator Characteristic of the Fruit Sorter

• Main Authors: HSIEH, SHUN-LIN, 謝聖麟
• Other Authors: LUE KUN-YANG
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/27282350862430648284

碩士 === 國立臺灣大學 === 農業機械工程學系研究所 === 85 === The fruit sorter is used for sorting variety fruits in agriculture aspect and works very well. According to the difference between each plate in the sorter, the fruit sorter can grade from big and small fruit. The vibration device equipped in the sorter is a newly design in order to improve the grading effect. The vibration device is one of the most important part of the fruit sorter. But there is not any supported information about the device, like vibration amplitude etc. The goal of the research is to provide a guide as a reference about the variety characteristics of vibration of the vibration device. Then based on the research we can exactly know which or how the vibration device should be when the fruit sorter is employed to grade a specific fruit. The research takes the vibration amplitude ( controled by the tooth's tallness of the saw-toothed strip) ,vibration frequency ( controled by the pitch of the saw-toothed strip) and the vibration effect time ( controled by the longitude of the saw- toothed strip) as the variables, and try to find out the differences between each predefined characteristic of the vibration device ( change its vibration amplitude, frequency and vibration effect time). So that we can conclude a best character of the vibration device when sorting a specific fruit. The resultant data shows that there actually exists evident difference between whether there is the vibration device equipped or not. And by observing the data we find the performance of the sorter is best when the vibration amplitude is 5.0mm, the frequency is lower ( the pitch of the saw-toothed strip is 40mm) and the vibration effect time is longer ( the longitude of the saw-toothed strip is 600mm). (The percentage of the ideal sorting angle fruit number is highest and the percentage of the error grad ed fruit number is lowest.) keywords : vibration effect time，vibration frequency，vibration amplitude