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轉(zhuǎn)換比率:金額 X 10=金幣數(shù)量, 例100元=1000金幣 | 論文字數(shù):9402 | ![]() | |
折扣與優(yōu)惠:團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式:Word格式(*.doc) | ![]() |
摘要:電梯作為高層建筑的一種交通工具,與人們的生活有著密不可分的紐帶關(guān)系,隨著生活品質(zhì)的提高,人們對電梯的要求也日益增加,這樣,使其得到了廣泛的利用以及快速發(fā)展,其相應(yīng)的拖動技術(shù)已經(jīng)達到了調(diào)頻調(diào)速,邏輯控制方面也由現(xiàn)在的PLC控制取代了以前的繼電器控制。 本次設(shè)計主要介紹了用液壓作為動力源,兩級液壓缸控制電梯的上升和下降,單級缸控制液壓電梯的開關(guān)門,另外PLC系統(tǒng)作為控制部分的三層液壓電梯的特點。軟、硬件的設(shè)計,根據(jù)現(xiàn)實生活中的電梯示意圖,以及液壓回路圖和電控圖,設(shè)計構(gòu)思的動作流程圖,來作出PLC的控制梯形圖,并進一步由梯形圖生成指令表,從而達到了用PLC控制液壓電梯的效果。 設(shè)計的主要任務(wù)是將PLC系統(tǒng)運用到液壓系統(tǒng)中,通過PLC的控制來使液壓電梯實現(xiàn)各樓層的召喚指令,自動和手動開關(guān)門,控制電梯的行進方向,在運行過程中對呼叫信號的處理,以及安全報警等功能。 關(guān)鍵詞:液壓 電梯 PLC控制 自動 安全
ABSTRACT:High-rise building elevator as a means of transport, and people's lives are inextricably ties, along with the improvement of the quality of life, people on the elevator requirements are increasing, so it is widely use and the rapid development of drag its corresponding technology has reached a FM control, logic control PLC control from now also replaced the previous relay control. This design introduces a hydraulic power source, control of the elevator stage hydraulic cylinder up and down, the single-cylinder controls the hydraulic elevator door switch, the other part of the PLC system layer as the control characteristics of the hydraulic elevator. Hardware and software design, according to a schematic view of the elevator in real life, and a hydraulic circuit diagram and electric diagram of the operation flow chart design ideas to make the control of PLC ladder and further generated by the ladder instruction sheet, so as to achieve with PLC controlled hydraulic lift effect. The main task is to design the PLC system applied to the hydraulic system, through the PLC control to achieve the hydraulic lift to all floors call instruction, the automatic and manual switch, the control of the direction of travel of the elevator, during operation of the call signal processing , and security alarm. Keywords: Hydraulic;Lift;PLC control;Automatically;Safety
液壓電梯在運行的過程中通過電液伺服閥控制使電梯實現(xiàn)加速度、速度變化,使乘客在搭乘的時候會感覺舒服、安穩(wěn)。相比于一般的普通電梯,液壓電梯有較高的安全性,更好的運行效率,耗能低等一系列的優(yōu)點。同時,液壓電梯安裝方便,機房在井道底部附近,不用安裝曳引機、控制柜等;維修費用少,以油為介質(zhì),起潤滑作用,減少各部分的摩擦損耗;對于重載貨物,液壓電梯的成本較低,有明顯的優(yōu)越性;可用于危險場合,無鋼絲繩滑輪和安全鉗,不會產(chǎn)生火花,在危險場合下同樣可以安裝使用;由于其自身提升高度小,輸入功率和結(jié)構(gòu)條件的限制,特別適合低層建筑的使用。正因為有這些特殊之處,液壓電梯的應(yīng)用前景非常廣闊,在以后的社會發(fā)展過程中,其需求量也會逐漸增加。
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