Engineering mechanical vehicle, vehicle steering following control system and vehicle steering following control method

The invention discloses an engineering mechanical vehicle, a vehicle steering following control system and a vehicle steering following control method. The system comprises a control valve group, a steering assistance cylinder and a centering cylinder. The control valve group comprises a servo valve, a solenoid valve, a hydraulic control one-way valve and a hydraulic control reversing valve. The servo valve is connected with the steering assistance cylinder, and the solenoid valve is connected with the centering cylinder. The hydraulic control one-way valve comprises a first oil port, a second oil port and a control oil port, the first oil port of the hydraulic control one-way valve is connected with the steering assistance cylinder, and the second oil port of the hydraulic control one-way valve is connected with an oil returning tank. The hydraulic control reversing valve comprises a control oil port and a working oil port, the control oil port of the hydraulic control reversing valve is communicated with a hydraulic circuit arranged between the solenoid valve and the centering cylinder, and the working oil port of the hydraulic control reversing valve is connected with the control oil port of the hydraulic control one-way valve. The engineering mechanical vehicle, the vehicle steering following control system and the vehicle steering following control method improve fast response of the steering assistance cylinder in the following and steering processes and guarantee fast lockout functions of the hydraulic control one-way valve simultaneously.