机载短运距输送机链道结构优化设计

Structural optimization design of chain path of short-distance conveyor installed on mining equipments

现有的机载短运距输送机链道采用直线-圆弧-直线的设计方法,工作时存在噪声过大、链条磨损严重及使用寿命短等问题。从解析几何的角度建立求解坐标系,从水平和竖直两个方向对链道进行运动连续性分析,采用五次多项式拟合优化,形成新的紧边链道过渡曲线函数,并在MATLAB中进行图形化验证。该函数能消除由链道原因造成的运动冲击,并对过渡链道进行分段设计,解决了输送槽链道加工困难的工艺问题。

The existing chain path of the short-distance conveyor installed on mining equipments is designed as the mode of straight line - arc - straight line, which leads to overhigh noise, severe chain abrasion and short service lifespan. In the paper, the coordinate system was created from the view of analytic geometry, and motion continuity of the chain path was analyzed from horizontal and vertical direction. In addition, five-power polynomial fitting was applied to form new transition curve function of the tight-side chain path, and then graphical verification was conducted in MATLAB. The function eliminated the impact due to the chain path. Moreover, the transition chain path was designed in segment, which solved the difficulty in manufacture of the chain path of the conveying groove.