【摘要】：帶式輸送機(jī)是現(xiàn)代運(yùn)輸物料設(shè)備中不可缺少的設(shè)備之一,以結(jié)構(gòu)簡(jiǎn)單、操作方便、便于維修、動(dòng)力資源耗損少、運(yùn)行可靠、通用性強(qiáng)等優(yōu)點(diǎn)見(jiàn)長(zhǎng)。隨著科技的發(fā)展,帶式輸送機(jī)也在朝著更遠(yuǎn)距離,更高帶速,更大運(yùn)量的方向發(fā)展。此時(shí),帶式輸送機(jī)的驅(qū)動(dòng)系統(tǒng)也就成為了研究的重點(diǎn)之一,因?yàn)樗禽斔蜋C(jī)的關(guān)鍵設(shè)備和動(dòng)力源,只有通過(guò)驅(qū)動(dòng)系統(tǒng)才能把其它形式的能量傳送給輸送機(jī)。在長(zhǎng)距離的輸送中人們大多采用的驅(qū)動(dòng)方式仍是以機(jī)頭集中驅(qū)動(dòng)為主。為了能夠降低帶在長(zhǎng)距離輸送過(guò)程中的張力,現(xiàn)代也有諸多帶有輔機(jī)的中間驅(qū)動(dòng)技術(shù)。本文提出一種新的驅(qū)動(dòng)方式：直線(xiàn)電機(jī)直接驅(qū)動(dòng)。 所謂直線(xiàn)電機(jī)驅(qū)動(dòng)是指采用多臺(tái)直線(xiàn)電機(jī)直接驅(qū)動(dòng)帶式輸送機(jī),而不借助于旋轉(zhuǎn)電機(jī)機(jī)頭或機(jī)尾的驅(qū)動(dòng)力。這樣就避免了輸送機(jī)在起動(dòng)過(guò)程中的高動(dòng)張力,降低了輸送帶因單機(jī)長(zhǎng)度的增加而隨之增加的拉力。此外,直線(xiàn)電機(jī)無(wú)需接觸便可傳遞作用力；電機(jī)直線(xiàn)運(yùn)動(dòng),省去中間傳動(dòng)裝置；電機(jī)初級(jí)可沿輸送帶任意布置,理論上可以無(wú)限增加輸送距離。 直線(xiàn)電機(jī)應(yīng)用于輸送機(jī)上,初級(jí)沿輸送帶長(zhǎng)度方向布置,次級(jí)埋入輸送帶內(nèi)。能埋入輸送帶的次級(jí)要求它必須滿(mǎn)足一定的剛度和韌性,它可以沿輸送帶彎曲繞過(guò)滾筒,當(dāng)承載物料時(shí)又可以彎曲成槽。本論文通過(guò)對(duì)同、異步直線(xiàn)電機(jī)各自特性的比較,對(duì)直線(xiàn)感應(yīng)電機(jī)次級(jí)材料的分析對(duì)比,對(duì)多種型式復(fù)合次級(jí)的材料、結(jié)構(gòu)的比較,設(shè)計(jì)出網(wǎng)格型復(fù)合次級(jí)直線(xiàn)感應(yīng)電機(jī)作為輸送機(jī)的驅(qū)動(dòng)裝置。通過(guò)對(duì)網(wǎng)格型復(fù)合次級(jí)的模型進(jìn)行理論分析、求解電壓方程,進(jìn)而用Ansofl Maxwell2D進(jìn)行電磁仿真,來(lái)確保電機(jī)性能的可靠性。 在確定次級(jí)型式之后,需要進(jìn)行次級(jí)輸送帶的設(shè)計(jì),其制造工藝和普通輸送帶的并無(wú)差異,這樣就有利于技術(shù)的推廣。在滿(mǎn)足各臺(tái)驅(qū)動(dòng)電機(jī)牽引力、驅(qū)動(dòng)功率均衡的情況下,本文通過(guò)理論計(jì)算得出,在一定長(zhǎng)度的輸送距離內(nèi)所需電機(jī)的臺(tái)數(shù),初級(jí)在沿輸送帶長(zhǎng)度上合理布置。通過(guò)RecurDyn對(duì)直線(xiàn)電機(jī)驅(qū)動(dòng)帶式輸送機(jī)的起動(dòng)特性進(jìn)行仿真,求解直線(xiàn)驅(qū)動(dòng)系統(tǒng)對(duì)輸送機(jī)啟動(dòng)時(shí)速度、加速度及帶的張力的影響。 本論文通過(guò)理論計(jì)算與計(jì)算機(jī)仿真,通過(guò)全面的分析認(rèn)為直線(xiàn)電機(jī)在帶式輸送機(jī)上的應(yīng)用是可行的。
[Abstract]:Belt conveyor is one of the indispensable equipments in the modern transportation material equipment. It has the advantages of simple structure, convenient operation, convenient maintenance, less power consumption, reliable operation, strong versatility and so on. With the development of science and technology, belt conveyors are moving toward the direction of longer distance, higher speed and larger volume. At this time, the driving system of belt conveyor has become one of the focus of the research, because it is the key equipment and power source of the conveyor, only through the drive system can other forms of energy be transferred to the conveyor. In the long distance transportation, most of the driving methods are still the head concentrated drive. In order to reduce the tension of belt during long distance transportation, there are many intermediate drive technologies with auxiliary machines. In this paper, a new driving method, linear motor direct drive, is proposed. The so-called linear motor drive refers to the belt conveyor driven directly by multiple linear motors without the help of the driving force of the head or tail of the rotary motor. In this way, the high dynamic tension in the starting process of the conveyor is avoided, and the tension of the conveyor belt increases with the increase of the length of the conveyer. In addition, the linear motor can transfer the force without contact; the motor moves in a straight line and the intermediate transmission device is omitted; the primary motor can be arranged arbitrarily along the conveyor belt, and theoretically it can increase the conveying distance indefinitely. Linear motor used in conveyor, primary along the conveyor belt length direction, secondary buried in the conveyor belt. It must satisfy certain rigidity and toughness, it can bend around the drum along the conveyor belt and bend into groove when carrying the material. This paper compares the characteristics of the same, asynchronous linear motors, the secondary materials of the linear induction motors, the materials and structures of various types of composite secondary motors. The grid type composite secondary linear induction motor is designed as the driving device of the conveyor. Based on the theoretical analysis of the mesh-type composite secondary model, the voltage equation is solved, and then the electromagnetic simulation is carried out with Ansofl Maxwell2D to ensure the reliability of the motor performance. After the secondary type is determined, it is necessary to design the secondary conveyor belt, and there is no difference between the manufacturing process and the ordinary conveyor belt, which is beneficial to the popularization of the technology. Under the condition of satisfying the traction force of each driving motor and equalizing the driving power, the theoretical calculation shows that the number of motors needed in a certain length of conveying distance is reasonably arranged at the primary level along the length of the conveyor belt. The starting characteristics of belt conveyor driven by linear motor are simulated by RecurDyn, and the effects of linear drive system on the speed, acceleration and tension of belt are solved. Through theoretical calculation and computer simulation, it is concluded that the application of linear motor in belt conveyor is feasible.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TM359.4;TH222

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