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秧苗箱自動取箱搬運作業分析之研究

Analysis of Automatic Tray-Discharging Operations for Rice Seedlings

Abstracts


本論文之研究目的旨在以LabVIEW圖控式程式語言開發一套取箱搬運作業能量模擬分析系統,進行秧苗箱自動取箱搬運作業分析之研究。在研究第一代取箱機之作業時序分析後,建立作業模式,並以第二代取箱機進行模式驗證及分析。在每個棧板堆放四疊,每疊30箱,共120箱下,第二代取箱機在三箱一疊的排放模式下,實際完成單一棧板苗箱排放之作業時間為313.9秒;六箱一疊排放模式則為183.3秒。將第二代取箱機所使用之驅動元件規格及作業參數輸入於取箱搬運作業分析系統之人機介面,進行作業模擬。結果顯示:三箱一疊排放模式之作業時間為310.5秒;六箱一疊作業時間為178.3秒,模擬與量測值之差異值在2.7%以內。本研究模擬液壓泵從15至35 l/min流量下之作業效能,分析結果得知,於液壓缸使用速度範圍內,將液壓泵流量提升至33 l/min,並配合夾取裝置無負載及有負載狀況下,分別供應馬達50Hz及45Hz之電源頻率,可求得在三箱及六箱一疊排放模式下,一個棧板的苗箱排放作業時間分別為157.0秒及96.9秒,與改善前比較,整體系統作業提升達45.6%以上。開發之秧苗箱自動取箱搬運分析系統,可作為系統設計之分析工具,並透過友善的人機介面顯示,可做為工程人員培訓之輔助工具。

Keywords

棧板 苗箱 自動化 搬運系統 系統模擬

Parallel abstracts


The objective of this research is to develop an analysis system of the automatic tray-discharging system for rice seedlings by graphical programming language LabVIEW. The data collections for the analysis system were from the first type of the tray-discharging system and verified by the second type of the tray-discharging system. For the operations of 120 trays in a pallet with 4 stacks, the simulated results showed that the working time is 310.5 s in the discharged mode of 3-tray per pile and 178.3 s in the mode of 6-tray per pile, while the actual work is 313.9 s in the mode of 3-tray per pile and 183.3 s in the mode of 6-tray per pile, within a slight difference of 2.7%. The oil flow speed in the hydraulic system was varied from 15 to 35 l/min to analyze the sensitivity of the system working time. The analyzed results showed that the best working efficiency can be obtained in the 33 l/min, provided the power frequency of 45 Hz and 50 Hz for Gripping-Traveler of without loading and with loading, which the working time is 157.0 s in the mode of 3-tray per pile and 96.9 s in the mode of 6-tray per pile. In comparison with the original one, the improved operational mode can obtain a more than 45.6% of working speed. Consequently, the developed analysis system of the automatic tray-discharging system for rice seedlings could be used for system design and being a teaching aid for engineers training.

Parallel keywords

Pallet Tray Automation Transportation system System simulation

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