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題 名 | 青割狼尾草收穫機割取與切削動力之研究 |
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作 者 | 馮丁樹; 范乾裕; | 書刊名 | 農業工程學報 |
卷 期 | 37:3 1991.09[民80.09] |
頁 次 | 頁67-79 |
分類號 | 434.251 |
關鍵詞 | 切削; 收穫機; 青割; 狼尾草; 動力; 割取; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究旨在針對現有的狼尾草收穫方式進行收穫動力需求的研究,以瞭解不同進料方位及進料方式對收穫所需動力的影響。進料方位包括正常位置、偏左及偏右位置等三種,而叢生進料方式則包括雙叢連續、單叢疏植及榕株等三種。 為瞭解所需動力之分佈,本研究中並分別進行圓盤刀割取試驗及綜合動力收穫試驗,搭配前面進料方式,以分離割取部份所需之動力。 由切割實驗所得資料得知,在狼尾草之收穫過程中,切割所需的動力約低於1kW。而綜口動力試驗結果,全部所需之動力約為23kW。故切割所需動力約5﹪左右,餘為拋送及摩擦所需之能量。 在連續及雙叢排列之進料方式下,其所需動力均顯著受進料速率之影響。故其最佳模式為以狼尾草進料速率為主要結構。在單叢等量但採用疏、密兩種種植之方式中,其所需之動力則直接與其單株之直徑有關,與進料或移動速率間之關係則甚小。 狼尾草的實際種植方式多以連續及多叢重植。故其收穫的動力應以連續及雙叢的模式來估計,因此直接以進料速率或前進速度的大小即可預測收穫機的動力消耗。 在相同的種植支數條件之下,進料之中心方位仍以正常或原預設之位置所需之動力最小,其收穫損失率也最小。其餘較偏左或偏右的位置均需大較大的動力,且其產生之損耗情形較大。 |
英文摘要 | Purpose of this study was to obtain the power requirements for the harvesting of Napier grass in Taiwan. Three positions such as the normal default, right and left offsets, and three types of feeding such as the continuos double-cluster, loose and dense single clusters were under experiments to understand how they affect the consumption of power. To further understand the distribution of the power within individual sections, the study also includes a torque check on the rotary cutters and the power for the whole mechanisms, accompanied by the positions and types of feeding mentioned. The results of experiments on the cutter indicate that throughout the harvest process, only less than 1 kw of power is needed for the cutting operation. with the total power consumption of about 23 kw found during the tests, the cutting power was only a small amount, or less than 5%. For the feeding in continuous or double-cluster ways, the feed rates was found very significant in affecting the total power demand and thus was the only factor to construct an optimum prediction model. For loose and dense arrangements in single cluster feeding, the most significant factor for the power model was then changed to the diameter of plants. As a result, the feed rates, or consequently the field operating speeds, become the most significant factors in predicting the power consumption of a Napier harvester. As to the different feeding positions during test, it was found that the normal default one regard less power and caused less losses on the filed. Other positions such as the left and right offsets will both produce inverse results under similar conditions. |
本系統中英文摘要資訊取自各篇刊載內容。