Study and Design of the Discharge Port of the Onion Shallow Digging Harvester

洋蔥淺挖採收機排出口之設計研究

陳寶川(Pao-Chuan Chen) ； 王豐政(Feng-Jehng Wang) ； 陳俊明(Jiunn-Ming Chen) ； 尤瓊琦(Chung-Chyi Yu) ； 洪辰雄(Chen-Hsiung Hung)

《農業機械學刊》 19卷1期 (2010/03) Pp. 1-8

https://doi.org/10.30062/JAM.201003.0001

摘要

本研究旨在開發洋蔥採收機的排出口，使經機械採收後的洋蔥，能成條狀順暢地排放在畦面上，是以該採收機的排出口的寬度要縮小，但其排出線長度要大於（或等於）進料口，才不致有阻塞現象。本研究所設計的排出口為弧形，相關的設計值為：排出口弧形所佔的角度為152°，排出口半徑為42 cm，排出口弧長（排出線長度）為111.4 cm，比進料口寬度110 cm 大1.4 cm，集中導板長70.3 cm，兩集中導板末端的距離為81.5 cm，排出口寬度為進料口的74.1%。經由本研究所研發的排出口裝置附掛在洋蔥淺挖採收機上，田間試驗結果，未發現排出口有阻塞、蔥球被土壤覆蓋等情形。洋蔥滑落畦溝之百分率平均為0.24%，在常態分佈下的機率最高為0.6%，損傷率平均為0.1%，在常態分佈下的機率最高為0.37%。其作業能量經田間試驗結果為：一畦五行式2.77 ha/day（8 hr），一畦六行式3.29 ha/day（8hr）。

關鍵字

洋蔥 ； 採收機 ； 排出口

並列摘要

This study aimed on the development of a discharge port device with gradually reduced width for the onion shallow digging harvester by which the onions can be smoothly discharged in strip on the discharge port of the bed, while the length of its discharge line must be greater than (or equal to) the charge port so that the obstruction would not occur. The discharge port, designed in this study, is in arc shape. The relevant design values are: the angle taken up by the arc length of the discharge port is 152°; the radius of the discharge port is 42 cm; the arc length (length of the discharge line) is 111.4 cm, 1.4 cm greater than 110 cm of the charge port; the centralized guide plate length is 70.3 cm; the distance between two ends of the centralized guide plate is 81.5 cm and the width of the discharge port is 74.1% of the charge port. This device of the discharge port is fitted on the onion shallow digging harvester. As a result of the field test, no obstruction of the discharge port or covering of the onion balls by earth is found. Onions which slide into the bed ditch is 0.24% on an average; the highest probability under the normal distribution is 0.6%; the average rate of loss is 0.1%, while the highest rate under the normal distribution is 0.37%.The filed tests showed that the operation capacity of the onion shallow digging harvester is 2.77 ha/day (8 hr) for five rows per bed and 3.29 ha/day (8 hr) for six rows per bed.

並列關鍵字

Onion ； Harvester ； Discharge Port