貨車尾門之齒輪螺桿機構整合設計與運動分析

傳統貨車具有裝卸貨物不方便的缺點，如果將車體後方安裝尾門升降及翻轉機構，可提高裝卸貨物並提高裝載和卸載貨物的工作效率。為了方便貨物裝卸，貨車尾門必須具備兩個運動，分別控制升降與翻轉運動，因此大型貨車的貨車尾門大多使用雙動力源(雙油壓缸或四油壓缸)驅動; 小型貨車的貨車尾門則較多使用單動力源(單油壓缸)驅動。但油壓缸驅動的貨車尾門，其製造成本與維修費用較高，如何使用單動力源驅動貨車尾門，提高負載量、增加穩定性及減少成本與維修費用，是一個值得研究的課題。本研究因考量使用油壓系統的製造成本、往後維修費用、以及油壓系統老化(漏油)的問題，本研究將採用單動力源(雙電動缸)來設計貨車尾門(小型貨車)的升降及翻轉機構，並設計出符合貨車尾門(小型貨車)的升降與翻轉機構之設計需求的電動缸，最後進行期工程設計與RP雛型發。

關鍵字

貨車尾門；升降及翻轉機構；單動力源；電動缸

並列摘要

Traditional trucks have the disadvantage of loading and unloading goods. If installing tailgate lift and invert mechanism in the rear of the truck, it can improve the loading and unloading of goods but also the efficiency of transference. To facilitate the assemble and disassemble of goods, the truck's tailgate must have two movements to control lift and rollover. Therefore, most of the freight vehicle’s tailgate using double power source (double hydraulic cylinder or four hydraulic cylinder) to drive and the pick-up trucks were mostly driven by a single power source (single hydraulic cylinder). But it costs higher in manufacture and maintenance of the hydraulic cylinder driven truck tailgate. It is a worth subject to research how to use a single power source to move the truck's tailgate. Not only the increasing of load and stability but also the costs of reduce and maintenance. This study is due to consider the use of hydraulic system manufacturing costs and the maintenance costs, as well as the aging of the hydraulic system (oil-spill). In this study, a single power source (double electric cylinder) will be used to design the lifting and turning mechanism of the tailgate (pick-up truck). And designed in accordance with the tailgate (pick-up) lift and flip requirements of the electric cylinder, and finally the project design and RP prototyping.