【正文】 直流發(fā)動機(jī)驅(qū)動、不同填充液體驅(qū)動、和相異機(jī)械傳遞驅(qū)動系統(tǒng)一直實(shí)力相當(dāng)?shù)暮蜻x者。 參考文獻(xiàn) [1]Michael L. Nave, Inc. 。變頻交流驅(qū)動和非 電刷直流驅(qū)動主要限制于中型傳送帶，這些中型傳送帶需要精確的速度控制，高代價和復(fù)雜性。最新的進(jìn)展顯示，固定液體填充耦合系統(tǒng)的交流發(fā)動機(jī)是簡單結(jié)構(gòu)中、大型傳送帶基本啟動方法。但是至今沒有一個啟動系統(tǒng)能夠達(dá)到這樣的要求。第一條曲線輪廓加速時的空帶，而第二個滿載帶。加速度信封監(jiān)測 39。如果驅(qū)動電流或強(qiáng)制要求在早期序列低，運(yùn)動開始時，帶必須卸載。由于在此前的運(yùn)行才成為載入加載驅(qū)動 帶，平均驅(qū)動電流進(jìn)行采樣，并在運(yùn)行時先入先出緩沖存儲器，它反映了皮帶輸送時間保留。第一項(xiàng)開始前作出的決定，或 39。在一些復(fù)雜的系統(tǒng)，它是最為理想的閉環(huán)控制系統(tǒng)調(diào)整中遇到的各種輸送條件本身。閉環(huán)控制系統(tǒng)的修改和之間的空滿載輸送帶的出發(fā)作用力。 在開環(huán)控制，如電流，轉(zhuǎn)矩，或速度驅(qū)動器運(yùn)行參數(shù)不影響順序操作。在一個復(fù)雜的系統(tǒng)經(jīng)常被忽視的成本是現(xiàn)場人員的培訓(xùn)，或停機(jī)由于培訓(xùn)不足導(dǎo)致的成本。 復(fù)雜性 首選的驅(qū)動裝置是一個單一的，例如通過一個單一的頭輪驅(qū)動電機(jī)簡單。 成本 驅(qū)動器設(shè)計員將審查各個驅(qū)動系統(tǒng)的費(fèi)用。更換的項(xiàng)目將包括電機(jī)電刷，軸承，剎車片，耗散電阻，大連交通大學(xué)信息工程學(xué)院 2020 屆本科畢業(yè)生畢業(yè)設(shè)計 (論文 )外文翻譯 9 油和冷卻水。一些驅(qū)動器可能接受能量從負(fù)荷和退回它到輸電線供其它負(fù)荷使用。 驅(qū)動器的負(fù)載必須與其他驅(qū)動器共享 是很有用的。有一個直接關(guān)系在熱量評級為被重復(fù)的起始時間和費(fèi)用之間。各個起始時間熱量負(fù)荷依靠相當(dāng)數(shù)量傳送帶負(fù)荷和起始時間的期限。一條空傳送帶正常存在最小的必需的扭矩 , 當(dāng)一條充分地被裝載的傳送帶存在最高的必需的扭矩。在更大的傳送帶 和傳送帶以優(yōu)化大小的要素 , 是公用扭矩限額 110% 至 125%。這些群體的大小成科是完全任意的。 為這論述 , 我們假設(shè)那皮帶傳動系統(tǒng)范圍從分?jǐn)?shù)馬力到千位的多個馬力。帶 “ 驅(qū)動系統(tǒng) ” 應(yīng)包含多個組件，包括電氣原動機(jī)，電機(jī)與電控系統(tǒng)，大連交通大學(xué)信息工程學(xué)院 2020 屆本科畢業(yè)生畢業(yè)設(shè)計 (論文 )外文翻譯 8 電機(jī)聯(lián)軸器，減速機(jī)，低速聯(lián)軸器，皮帶傳動滑輪起動，制動和滑輪閘 (Cur 1986) 。無論是機(jī)械或電氣或兩者的結(jié)合（ CEM,1979），光滑的啟動輸送機(jī)都可以實(shí)現(xiàn)驅(qū)動力矩控制設(shè)備的使用。 本文主要闡述輸送機(jī)的開始和加速的過程。大的加速度產(chǎn)生的動力會給傳送帶的紋理、傳送帶結(jié)合處、驅(qū)動滑輪、軸承、減速器以 及耦合器帶來負(fù)面影響。傳統(tǒng)傳送帶結(jié)構(gòu)的設(shè)計，都是根據(jù)穩(wěn)定運(yùn)行情況下傳送帶的受力情況制定的。本文考查了不同啟動方法在煤礦工業(yè)帶式運(yùn)送機(jī)中的應(yīng)用。. This usually involves a parison In time of the drive current or force versus the belt speed. if the drive current or force required early in the sequence is low and motion is initiated, the belt must be unloaded. If the drive current or force required is high and motion is slow in starting, the conveyor must be loaded. This decision can be divided in zones and used to modify the middle and finish of the start sequence control. The third method involves a parison of the belt speed versus time for this start against historical limits of belt acceleration, or 39。大連交通大學(xué)信息工程學(xué)院 2020 屆本科畢業(yè)生畢業(yè)設(shè)計 (論文 )外文翻譯 1 A Comparison of Soft Start Mechanisms for Mining Belt Conveyors 1800 Washington Road Pittsburgh, PA 15241 Belt Conveyors are an important method for transportation of bulk materials in the mining industry. The control of the application of the starting torque from the belt drive system to the belt fabric affects the performance, life cost, and reliability of the conveyor. This paper examines applications of each starting method within the coal mining industry. INTRODUCTION The force required to move a belt conveyor must be transmitted by the drive pulley via friction between the drive pulley and the belt fabric. In order to transmit power there must be a difference in the belt tension as it approaches and leaves the drive pulley. These conditions are true for steady state running, starting, and stopping. Traditionally, belt designs are based on static calculations of running forces. Since starting and stopping are not examined in detail, safety factors are applied to static loadings (Harrison, 1987). This paper will primarily address the starting or acceleration duty of the conveyor. The belt designer must control starting acceleration to prevent excessive tension in the belt fabric and forces in the belt drive system (Suttees, 1986). High acceleration forces can adversely affect the belt fabric, belt splices, drive pulleys, idler pulleys, shafts, bearings, speed reducers, and couplings. Uncontrolled acceleration forces can cause belt conveyor system performance problems with vertical curves, excessive belt takeup movement, loss of drive pulley friction, spillage of materials, and festooning of the belt fabric. The belt designer is confronted with two problems, The belt drive system must produce a minimum torque powerful enough to start the conveyor, and controlled such that the acceleration forces are within safe limits. Smooth starting of the conveyor can be acplished by the use of drive torque control equipment, either mechanical or electrical, or a bination of the two (CEM, 1979). SOFT START MECHANISM EVALUATION CRITERION What is the best belt conveyor drive system? The answer depen