电动叉车起升调速机构设计及可靠性试验方法研究  

Design of Electric Forklift Lifting Speed Control Mechanism and Research on Its Reliability Test Method

作　　者：张华俊[1,2] ZHANG Huajun(Anhui Heli Co.,Ltd.,Hefei 230601;Anhui Key Laboratory of Industrial Truck,Hefei 230601)

机构地区：[1]安徽合力股份有限公司,合肥230601 [2]安徽省工业车辆重点实验室,合肥230601

出　　处：《现代制造技术与装备》2024年第5期80-82,共3页Modern Manufacturing Technology and Equipment

摘　　要：电动叉车起升功能的基本原理为驾驶人员操作起升阀杆时,阀杆连接着多路阀阀芯,阀杆行程的变化会引起多路阀阀芯运动,从而引起起升阀口的开合度变化。阀口的开合度直接影响液压油流入起升油缸的流量,从而影响起升速度。此外,多路阀上安装有起升调速传感器。阀杆行程的变化会触发起升调速传感器产生连续变化的信号并输出给电机控制器,电机控制器根据接收的信号控制油泵电机转动。油泵电机连接并带动齿轮泵工作,将液压油以不同的流量传递至多路阀起升阀口,并最终传输至起升油缸,从而影响起升的速度。基于此,对起升调速机构的试验方法进行研究,并开展可靠性试验验证,保障起升调速机构的可靠性,促进研究方案的应用。The basic principle of electric forklift lifting function is that when the driver operates the lifting valve stem,the valve stem is connected with the multi-way valve spool,and the change of the valve stem stroke will cause the movement of the multi-way valve spool,resulting in the change of the opening and closing of the lifting valve port.The opening and closing degree of the valve port directly affects the flow of hydraulic oil into the lifting cylinder,thus affecting the lifting speed.In addition,the multi-way valve is equipped with a lifting speed regulation sensor.With the change of valve stem stroke,the lifting speed regulation sensor will be triggered to produce a continuous change of the signal and output to the motor controller,the motor controller according to the received signal control oil pump motor rotation.The oil pump motor is connected and drives the gear pump to work,and the hydraulic oil is transferred to the lifting valve port of the multi-way valve with different flow rates,and finally transmitted to the lifting cylinder,thus affecting the lifting speed.Based on this,the test method of lifting speed regulating mechanism is studied,and the reliability test is carried out to ensure the reliability of lifting speed regulating mechanism and promote the application of the research scheme.

关 键 词：电动叉车 起升调速机构 可靠性 验证方法 

分 类 号：TH242[机械工程—机械制造及自动化] TB114.3[理学—概率论与数理统计]