【摘要】：帶傳動機構(gòu)是機械傳動學(xué)科中一個重要分支,以其價格便宜、結(jié)構(gòu)簡單、過載保護、更換方便等特點得到了廣泛的應(yīng)用。目前使用的帶傳動機構(gòu),主動輪和從動輪分別與軸同心安裝,且主、從動輪均作勻速轉(zhuǎn)動。本文提出了一種變速帶傳動機構(gòu),即從動輪偏心安裝的帶傳動機構(gòu),該機構(gòu)的特點是在輸入轉(zhuǎn)速不變的情況下,輸出轉(zhuǎn)速在一定范圍內(nèi)作周期性變化。并將此機構(gòu)應(yīng)用到并條機的圈條機構(gòu)中,研究發(fā)現(xiàn),使用這種變速帶傳動機構(gòu)驅(qū)動圈條盤,不僅能滿足圈條工藝的要求,而且能增加條筒的容量及避免棉條中短纖維和雜質(zhì)在圈條斜管內(nèi)堆積形成一團臟纖維束,即“小老鼠”的產(chǎn)生。本文首先建立變速帶傳動機構(gòu)的運動方程,并計算出從動偏心輪的運動規(guī)律。然后將此機構(gòu)作為圈條盤的驅(qū)動機構(gòu),滿足圈條盤變速圈條的要求,這樣可以完全防止短纖維和雜質(zhì)在圈條斜管內(nèi)堆積形成“小老鼠”。最后再根據(jù)從動偏心輪的運動規(guī)律,適當(dāng)調(diào)整從動偏心輪的初始安裝位置,使圈條盤的棉條出口運動到條筒中心附近的時候轉(zhuǎn)速快,圈放的棉條少;運動到條筒壁附近的時候轉(zhuǎn)速慢,圈放的棉條多。這樣棉條在條筒內(nèi)分布會更加均勻,從而增加條筒容量。
[Abstract]:Belt transmission mechanism is an important branch of mechanical transmission. It has been widely used because of its cheap price, simple structure, overload protection, convenient replacement and so on. At present, the belt drive mechanism, the drive wheel and the slave wheel are installed concentrically with the shaft respectively, and the main and slave wheels are all rotated at uniform speed. In this paper, a variable speed belt transmission mechanism, which is installed from the eccentricity of the driving wheel, is presented. The mechanism is characterized by periodic variation of the output speed in a certain range under the condition of constant input speed. The mechanism is applied to the ring bar mechanism of the drawing frame. It is found that the use of the variable speed belt drive mechanism to drive the coil disk can not only meet the requirements of the coil strip process, Moreover, it can increase the capacity of the tube and avoid the accumulation of short fibers and impurities in the cotton sliver to form a mass of dirty fiber bundles, that is, "little mouse". In this paper, the motion equation of the variable speed belt drive mechanism is established, and the motion law of the driven eccentric wheel is calculated. Then the mechanism is used as the driving mechanism of the coil disk to meet the requirements of the variable speed coil bar, so that the short fiber and impurities can be completely prevented from accumulating in the loop strip inclined tube to form a "small mouse". Finally, according to the motion law of the driven eccentric wheel, the initial installation position of the driven eccentric wheel is adjusted appropriately, so that the speed of the cotton outlet of the coil tray moves to the center of the tube is faster, and the cotton sliver is less laid in the coil. Moving to the wall near the cylinder when the speed is slow, circle put more cotton sliver. In this way, the cotton sliver will be more evenly distributed in the tube, thus increasing the tube capacity.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TH132

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