本文選題：帶式輸送機 + 直線電機　； 參考：《工程設計學報》2017年03期

【摘要】：多機驅(qū)動在輸送裝備實現(xiàn)高速、長距離、大運量等方面起著至關重要的作用。直線電機因其具有不存在摩擦、無旋轉傳動部件、能夠沿輸送機長度方向任意布置和降低輸送帶張力等特點而成為特殊高性能帶式輸送機較理想的中間驅(qū)動方式。通過分析直線電機的工作原理,對直線電機與旋轉電機的優(yōu)缺點進行了比較;針對帶式輸送機用直線電機,對比確定了其次級型式,并進行了次級輸送帶結構設計;基于封閉式散料儲運物料試驗系統(tǒng)建立了靜動態(tài)特性試驗臺,并運用歐拉公式及逐點張力法求得直線電機推力(輸送帶張力差),進而分別對電壓、氣隙與推力之間的比例關系進行了試驗驗證,并間接進行了動態(tài)試驗(機械特性試驗),得到了推力關于輸送帶速度的數(shù)學表達式;基于Belt Analyst帶式輸送機計算分析軟件,對輸送帶穩(wěn)定運行及啟動過程的張力進行了仿真分析,并與試驗張力進行了對比分析。試驗結果表明:推力分別與電壓平方、氣隙倒數(shù)的平方成正比;電壓、氣隙與推力之間的理論曲線與試驗值相符;直線電機的推力與輸入功率的比值較大,并隨著氣隙的減小,比值越來越大;與旋轉電機相比,此直線電機無臨界轉速,并顯示出很軟的機械特性;穩(wěn)定運行時張力的仿真值與試驗值基本吻合,其相對誤差均小于2%,但啟動過程中張力試驗值與仿真值誤差較大,間接表明保證啟動過程氣隙均勻的重要性。研究結果可適用于多機配合驅(qū)動超長距離帶式輸送機的改進與實際應用中。
[Abstract]:Multi machine drive plays an important role in the transmission equipment to realize high speed, long distance and large capacity. The linear motor has the characteristics that it has no friction, no rotating transmission parts, can arrange and reduce the tension of conveyor belt along the length direction of the conveyor, and becomes the ideal intermediate driver for the special high performance belt conveyor. By analyzing the working principle of the linear motor, the advantages and disadvantages of the linear motor and the rotating motor are compared. In view of the linear motor of the belt conveyor, the secondary type is determined by contrast, and the structure of the secondary conveyer belt is designed. The static and dynamic characteristic test platform based on the closed material storage and transportation material test system is set up, and the application of the static and dynamic characteristic test platform is established. The Euler formula and point by point tension method are used to obtain the thrust of the linear motor (the differential tension of the conveyer belt), and then the proportional relation between the voltage, the air gap and the thrust is tested respectively, and the dynamic test (mechanical characteristic test) is carried out indirectly, and the mathematical expression of the thrust on the speed of the conveyer belt is obtained; based on the Belt Analyst belt conveyor meter, The analysis software is used to simulate the tension of the stable operation and starting process of the conveyer belt, and compared with the test tension. The test results show that the thrust is directly proportional to the square of the voltage and the square of the air gap reciprocal; the theoretical curve between the voltage, the air gap and the thrust is in agreement with the test value; the thrust and the input work of the linear motor are the same. The ratio of the rate is larger and the ratio is increasing with the decrease of the air gap. Compared with the rotating motor, the linear motor has no critical speed, and shows a very soft mechanical characteristic. The simulation value of the tension is basically consistent with the test value, and the relative error is less than 2%, but the error of the tension test and the simulation value is larger than that in the starting process. It shows the importance of ensuring the uniform air gap in the start-up process. The research results can be applied to the improvement and practical application of the multi machine driven ultra long distance belt conveyor.
【作者單位】： 太原科技大學機械工程學院;山西省物料倉儲與裝卸輸送裝備工程技術研究中心;太原重型機械集團礦山設備分公司;
【基金】：國家自然科學基金面上項目(51575370) 山西省煤基重點科技攻關項目(MJ2014-09,MJ2014-02) 山西省回國留學人員科研資助項目(2016-093) 山西省研究生優(yōu)秀創(chuàng)新項目(2016BY134) 山西省研究生教育創(chuàng)新項目(2015BY49) 晉城市科技計劃項目(201501004-14)
【分類號】：TH222

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本文編號：1968378