该系统主要用于控制铣拌转子大臂的升降、转子罩尾门的启闭、后轮的转向等，由几组电磁阀来控制各油缸运动。电磁阀组为并联阀组，各阀组基板相连，基板进油口与单路稳定分流阀相连，阀组出口与集流块相连。供油控制阀组为整个系统提供高压油，当供油电磁阀不通电时P口与T口连通，系统液压油泄荷整个系统不能工作;当供油电磁通电时P口与T口断开为整个系统提供高压油，系统处于工作状态，溢流阀设定压力165 Mpa，保护系统元件。

This system is mainly used to control the lifting of the milling and mixing rotor arm, the opening and closing of the rotor cover tailgate, and the steering of the rear wheels. Several sets of solenoid valves are used to control the movement of each oil cylinder. The electromagnetic valve group is a parallel valve group, with each valve group substrate connected. The oil inlet of the substrate is connected to a single stable diversion valve, and the outlet of the valve group is connected to the manifold block. The oil supply control valve group provides high-pressure oil for the entire system. When the oil supply solenoid valve is not energized, the P port and T port are connected, and the hydraulic oil in the system is discharged. The entire system cannot work; When the oil supply solenoid is energized, the P and T ports are disconnected to provide high-pressure oil to the entire system. The system is in operation, and the relief valve is set at a pressure of 165 Mpa to protect system components.

铣拌转子的升降:操纵电磁阀开关，液流从电磁阀流出经液控单向阀和单向节流阀进入大臂提升油缸的有杆腔或无杆腔，活塞杆收缩或伸出，大臂带动转子升降。当转子下降时，油缸有杆腔液压油流出，经A口单向节流阀，油液流量减小，使转子下降速度不过快;当电磁阀开关处于中位时，无论工作装置在何位置，液压锁把油缸锁住，保证拌和深度不变。

Lifting of milling and mixing rotor: Control the solenoid valve switch, and the liquid flows out of the solenoid valve through the hydraulic control one-way valve and one-way throttle valve to enter the rodless or rodless chamber of the boom lifting oil cylinder. The piston rod contracts or extends, and the boom drives the rotor to lift and lower. When the rotor descends, hydraulic oil flows out of the rod chamber of the oil cylinder and passes through the one-way throttle valve at port A, reducing the oil flow rate and preventing the rotor from descending too quickly; When the solenoid valve switch is in the middle position, regardless of the position of the working device, the hydraulic lock locks the oil cylinder to ensure that the mixing depth remains unchanged.

操纵尾门电磁阀开关时可以控制尾门油缸的运动，实现尾门的开关并可固定在一定的开度状态。为了控制尾门的启闭速度，在尾门油缸的进出油口上安装有单向节流阀。

When operating the tailgate solenoid valve switch, the movement of the tailgate oil cylinder can be controlled to achieve the opening and closing of the tailgate, which can be fixed at a certain opening state. In order to control the opening and closing speed of the tailgate, a one-way throttle valve is installed on the inlet and outlet of the tailgate oil cylinder.

当操纵后轮转向电磁阀开关时则可以控制后轮的转向，左右转向角的大小利用接近开关实现自动控制并具有自动回中功能，液压锁把油缸锁住，保证后轮转向的可靠性。

When the rear wheel steering solenoid valve switch is operated, the steering of the rear wheel can be controlled. The size of the left and right steering angles is automatically controlled using proximity switches and has an automatic centering function. The hydraulic lock locks the oil cylinder to ensure the reliability of the rear wheel steering.