滚筒式混匀取料机料耙驱动装置的仿真分析与技术改进  

Simulation Analysis and Technology Improvement of Claw Drive of Dum-type Blending Reclaimer

作　　者：王军[1] 肖志权[1] 

机构地区：[1]武汉纺织大学机械工程与自动化学院,武汉430073

出　　处：《起重运输机械》2013年第11期46-50,共5页Hoisting and Conveying Machinery

基　　金：湖北省教育厅科学技术研究计划优秀中青年人才项目(Q20081702)

摘　　要：针对QLG1500-40滚筒式混匀取料机料耙驱动装置存在较大振动冲击、减速箱高速轴断裂等问题,对料耙驱动装置进行三维实体建模和模型简化,基于建立的行走阻力的指数摩擦力模型,运用Pro/Mechanism对料耙驱动装置的曲柄滑块机构进行仿真分析。结果表明,机构偏载造成行走小车在往复运动中受到巨大的行走阻力,当运动换向时,行走阻力方向突变形成巨大冲击载荷,造成设备周期性振动冲击故障。针对这种冲击载荷,提出建立补偿力的方案,该补偿力基于行走阻力与曲柄轴端受力给出,仿真分析表明,补偿力的建立,可以有效地减小因换向引起的突变载荷,进而减少料耙驱动装置故障的发生。Aiming at certain problems in claw drive of QLG1500-40 drum-type blending reclaimer such as large vibra-tion impact,high-speed shaft fracture of reducer,etc.,the 3D solid modeling and model simplification are performed for the claw drive.Based on the exponential friction model of movement resistance,simulation analysis is performed for slider-crank mechanism of claw drive by Pro/Mechanism.The result shows that the cart comes across huge resistance arising from partial load of the mechanism during reciprocating motion.When the movement direction is changed,movement resistance will turn into enormous impact load,causing regular vibration impact failures to the equipment.A scheme of balancing force is put forward aiming at the impact load.The balancing force is given based on the movement resistance and the force at crank shaft end.The simulation analysis shows that the balancing force can effectively reduce sudden load arising from reversing,hence to reduce failures of claw drive device.

关 键 词：滚筒式混匀取料机 曲柄滑块机构 摩擦力模型 PRO MECHANISM 改进 

分 类 号：TH237[机械工程—机械制造及自动化]