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題 名 | 狼尾草青割收穫機之研究 |
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作 者 | 黃清旺; | 書刊名 | 農業工程學報 |
卷 期 | 33:4 1987.12[民76.12] |
頁 次 | 頁62-81 |
分類號 | 434.251 |
關鍵詞 | 收穫機; 青割; 狼尾草; |
語 文 | 中文(Chinese) |
中文摘要 | 機械青割收穫平均株高150 cm,莖粗斷面9.38 mmψ,叢生周長97 cm,支數49支,水份含量60%~90%等變異因素大的狼尾草,應有其較大的寬容度,本研究經田間調查及物性分析結果,規劃研製試驗機並做田間試驗,功能顯著,其結果如下: (一)割刃寬度600 mm,採用雙圓盤同步反向各附8片三角鋸齒刃,轉數750~900 rpm時,割後基部整齊度在10 mm差距範圍內者達85%,撕裂率6%,割取範圍600~800 mm,震動少,符合作業功能及再生品質。 (二)依靜摩擦係數與壓縮率試驗結果,進料採用二對滾子式,其式樣、進料容許度、挾持力及可做5~75 mm調定的伸縮機喉,在二滾子線速度2.91 m/s及作業前進速度2.5 km/hr~4.0 km/hr時效果顯著。 (三)細切頭斧刀4支,裝配角30度,承刀偏位35 mm,初接觸剪斷挾角30度,飛輪理論線速度51.88 m/s,理論細斷草料長度33 mm,有效昇送高度13.73~20.60 m,經田間試驗,機械性能佳,投擲口未堵塞,草料細斷均度統計結果在31~40 mm達83%,符合供飼品質,顯示本機的規劃研製甚是合理。 (四)本機機喉之利用率44.4%偏低,摩擦能損失量7.24 ps-hrs/Mg偏高,理論細斷能量55.86 Mg/hr,作業馬力30~40 ps間,此部分仍擬於室內實體模擬試驗,進一步改良研究。 |
英文摘要 | Forage Harvester of Napier Grass having variegation in average height 150 cm, diameter 9.38 mm of single cross-area, perimeter 97 cm and 49 branches per group, and moisture content 60%-90%, must have a greater allowance for Green Feeding. The objective of this study is design for machine production and test for its function improvement, according to field investigation and analysis of the physical properties. The Harvester's function is good. The results are as following: 1. There are 16 pieces of Barikan type cutting knives on reverse and synchronous double disc of 600 mm width, 750-900 rpm revolving speed. The total cutting range is 600-800mm, the homogeneity after cutting basal parts of Napier Grass among 10 mm is 85%, the breaking rate is 6%, the vibration of cutting-shaft is little, therefore the working function of this machine is rational, and the quality is fine enough for Napier growing. 2. The Feeding Roller is designed as two pairs, having great allowance for feeding, holding ability and regulative range of Throat which is between 5 mm and 75 mm. According to experimenting data of static friction and compression rate, its molding is effective on field test, when peripheral speed is 2.91 m/s, and working speed of tractor is 2.5-4.0 km/hr. 3. There are 4 pieces of cutters, setting angle of 30 degrees on flywheel. An offset of ledger plate having an instantaneous shearing angle of 30 degrees, is 35mm. Theoretically, the peripheral speed of flywheel is 51.88 m/s, chopping length is 33 mm, and throwing effective height is 13.73-20.60m. According to statistical analysis after field test, the homogeneity in the effective length of chop of 31-40mm is 85%. It's demonstrated that the harvester has fine functional requirements and fine enough for silage or direct feeding. 4. Further study and improvement shall be concentrated on the userate of Throat of 44.4%, the frictional loss of 7.24 ps-hrs/Mg, the theoretical cutting capacity of 55.88 Mg/hr, and the working power of 30-40 ps. |
本系統中英文摘要資訊取自各篇刊載內容。