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简述前移式叉车的基本结构及液压系统控制功能,介绍了前移式叉车液压系统组成及液压控制系统的组成;详细阐述了前移式叉车液压系统的6条工作油路:货叉起升油路、货叉下降油路、门架前移和后移油路、货叉前倾和后倾油路、货叉左侧移和右侧移油路以及货叉手动下降油路。详细分析了液压控制系统的工作原理:液压泵电机控制器根据手柄输入信号,经过计算确定电机的输出转速;组合电磁阀控制器根据手柄输入信号,经过计算确定电磁阀的工作状态及比例阀的开启量;两个控制器之间的通信通过CAN总线实现。
The basic structure of the reach truck and the control functions of the hydraulic system are briefly introduced. The composition of the hydraulic system and the composition of the hydraulic control system of the reach truck are introduced. The six working circuits of the hydraulic system of the reach truck are elaborated: Lifts, Forks descends, Gates forward and backward, Forks forward and backward, Forks left and right shifts and Forks manually descends. The working principle of the hydraulic control system is analyzed in detail: The hydraulic pump motor controller calculates the output rotational speed of the motor according to the input signal of the handle, and the combined solenoid valve controller calculates the working state of the solenoid valve and the proportional valve according to the input signal of the handle Turn on; communication between two controllers is via CAN bus.