Abstract: The invention discloses a steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a mid-position locking cylinder, a first power steering cylinder, a second power steering cylinder, a first steering linkage and a second steering linkage; one end of the mid-position locking cylinder is connected with the steering rocker arm unit, and the other end is hinged to a frame; one ends of the first power steering cylinder and the second power steering cylinder are connected with the steering rocker arm unit, and the other ends are hinged to the frame; and one ends of the first steering linkage and the second steering linkage are connected with the steering rocker arm unit, the other ends are connected with knuckle arms, and the knuckle arm is fixed on a wheel rim.

Abstract: Disclosed are a follow-up steering control system for a multi-axle automobile crane and the multi-axle automobile crane. In a steering state of the multi-axle automobile crane, an output oil pressure of a first oil pressure output port is greater or less than that of a second oil pressure output port; a piston rod of a left-turning hydraulic cylinder is lengthened and a piston rod of a right-turning hydraulic cylinder is shortened, or the piston rod of the left-turning hydraulic cylinder is shortened and the piston rod of the right-turning hydraulic cylinder is lengthened; and a first knuckle arm and a second knuckle arm are driven to make a rear left steering wheel and a rear right steering wheel turn left or right.

Abstract: Disclosed are a follow-up steering control system for a multi-axle automobile crane and the multi-axle automobile crane. In a steering state of the multi-axle automobile crane, an output oil pressure of a first oil pressure output port is greater or less than that of a second oil pressure output port; a piston rod of a left-turning hydraulic cylinder is lengthened and a piston rod of a right-turning hydraulic cylinder is shortened, or the piston rod of the left-turning hydraulic cylinder is shortened and the piston rod of the right-turning hydraulic cylinder is lengthened; and a first knuckle arm and a second knuckle arm are driven to make a rear left steering wheel and a rear right steering wheel turn left or right.