升降式输送机起动及制动阶段动态特性分析

Dynamic property analysis for starting and braking phases of elevating conveyer

由于升降式输送机在输送启停过程中会产生惯性作用力,其作为横向载荷作用在丝杠升降机上,使得丝杠升降机中滚珠丝杠应力极值大幅度提升,通过ADAMS软件建立升降式输送机虚拟样机模型,并对启停过程进行动态特性分析,得到启停时间对动态特性的变化规律,提出了导向支撑轮机构以减小丝杠升降机应力极值。实践表明,通过导向支撑轮增加丝杠升降机伸出端的支撑,大大改善其受力状况并降低其应力极值,对于延长升降机的工作寿命,提高其工作可靠性具有参考意义。

The lifting conveyor will produce the inertia force during the starting and braking process, which is applied to the lead screw lift as the horizontal load, so that the extreme value of the stress of the rolling lead screw in the lead screw lift rises by a large margin. The virtual prototype model for the lifting conveyor is built by ADAMS to perform dynamic property analysis for the starting and braking process in order to work out the change rule of start-stop time to the dynamic behavior. The guiding support wheel mechanism is put forward to reduce the stress extreme value of the screw lift. it＇s indicated that the guiding support wheel can be used to facilitate to support the extending end of the screw lift, to significantly improve the load-carrying condition and decrease the stress extreme value, which can provide reference for extending the service life of the lift and advancing its working reliability.