Steering control system and method as well as crane

A steering control system, comprising:

• one or more first angle sensors, one or more second angle sensors, and a steering controller;
• wherein the one or more first angle sensors and the one or more second angle sensors—are respectively electrically connected to the steering controller;
• each of the one or more first angle sensors—collects an actual steering angle of a wheel corresponding to one of at least one mechanical steering axle as a first steering angle, and transmits the first steering angle to the steering controller;
• each of the one or more second angle sensors—collects an actual steering angle of a wheel corresponding to one of at least one electrically controlled steering axle as a second steering angle, and transmits the second steering angle to the steering controller;
• the steering controller obtains a theoretical steering angle of the wheel corresponding to the electrically controlled steering axle in a corresponding travel mode according to the first steering angle, and compares the second steering angle with the theoretical steering angle, to control the wheel corresponding to the electrically controlled steering axle to steer according to a difference therebetween, until the difference between the second steering angle and the theoretical steering angle is within a preset range;
• wherein each of the one or more first angle sensors is mounted on a first suspension cylinder corresponding to the one of the at least one mechanical steering axle, and each of the second angle sensors is mounted on a second suspension cylinder corresponding to one of the at least one electrically controlled steering axle;
• each of the one or more first angle sensors is integrated together with the first suspension cylinder, and each of the one or more second angle sensors is integrated together with the second suspension cylinder;
• wherein each of the one or more first angle sensors comprises a first rotary portion directly connected to a cylinder barrel of the corresponding first suspension cylinder and a first fixing portion directly connected to a connecting rod of the corresponding first suspension cylinder;
• each of the one or more second angle sensor comprises a second rotary portion directly connected to a cylinder barrel of the corresponding second suspension cylinder and a second fixing portion directly connected to a connecting rod of the corresponding second suspension cylinder.