大型带式输送机合理可控起动曲线的研究

Research on reasonable and controllable starting curve of large belt conveyor

大型带式输送机的可控起动过程的合理选择是降低输送机动载荷的重要途径。首先给出了带爬行段的等加速度、组合摆线、组合抛物线起动过程的分段函数;然后应用动态分析软件对等加速度、组合摆线。组合抛物线起动过程进行了计算机仿真,证明当起动加速度足够小时,采用组合摆线、组合抛物线起动具有较小的动载荷系数,当起动加速度较大时,等加速度起动方式具有较小的动载荷系数;最后给出了更一般的起动加速度曲线。

For a large belt conveyor, choosing the correct controllable starting way is an important approach to reducing the conveyor dynamic load. In this paper, the piecewise functions of constant acceleration, combined cycloid and combined parabola starting processes with sloping segments are put forward firstly. Secondly, computer simulation of these starting processes are carried out using dynamic analysis software, proving that the last two starting ways have less dynamic load coefficients when the starting acceleration is lower and the first one does when the starting acceleration is bigger. Lastly, more general starting acceleration curve is given.