The steering wheel's ability to automatically return depends on the steering wheel's positioning parameters and the steering gear's reverse efficiency.. Reasonable determination of steering wheel positioning parameters, the correct choice of steering gear, can ensure that the truck has a good automatic correction ability.When the steering damper is installed in the steering system, it can prevent the steering wheel from vibration and can significantly reduce the recoils transferred to the steering wheel.In order to make the truck have good maneuverability, it is necessary to make the steering wheel Angle as large as possible, with the minimum turning radius up to 2~2.5 times of the truck wheelbase.The portability of steering control is usually evaluated by two indicators: the tangential force on the steering wheel and the number of steering turns.