The present application discloses a steering control system, a method and a crane. The steering control system includes: one or more first angle sensors, one or more second angle sensors, and a steering controller; each of the first angle sensors collects an actual steering angle of a wheel corresponding to a mechanical steering axle as a first steering angle; each of the second angle sensors an actual steering angle of a wheel corresponding to an electrically controlled steering axle as a second steering angle; 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.

An axle assembly having a unitary trunnion bracket, an axle, and a support bracket. The unitary trunnion bracket may include an axle interface portion and a bracket interface portion. The bracket interface portion may extend from the axle interface portion. The axle may engage the axle interface portion. The support bracket may engage the bracket interface portion.

A multi-axle transport trailer having a plurality of axles includes a suspension comprising air bags associated with each axle, the air bags in communication with an air source, wherein air bags associated with different axles are capable of having different air pressures therein. The trailer further optionally includes a steering system associated with at least one axle, the axle including a tie rod connected between wheels on both ends of the axle, the steering system comprising cylinders configured to articulate the wheels, and a sensing device configured to monitor movement of the tie rod and facilitate actuating the cylinders to turn the wheels.

An axle assembly having a unitary trunnion bracket, an axle, and a support bracket. The unitary trunnion bracket may include an axle interface portion and a bracket interface portion. The bracket interface portion may extend from the axle interface portion. The axle may engage the axle interface portion. The support bracket may engage the bracket interface portion.

A cargo dolly having a suspension assembly incorporated therein, wherein the suspension assembly is adapted to maintain the dolly at a prescribed height relative to an underlying surface. Thus, as cargo is loaded onto the dolly, and subsequently unloaded from the dolly, the dolly will substantially remain at the same height, which facilitates use of the dolly with standardized loading docks, such as loading docks associated with aircraft.

The invention relates to a heavy-duty trailer (10) in which at least one of the wheels (12) has a MacPherson independent wheel suspension (16). The wheel (12) can be a steered wheel, wherein the steering cylinders (94) of the steering device (40) enclose an angle (a) with the longitudinal direction (L) of the trailer. The transverse control arms (30l, 30r) can also be articulated onto the trailer frame at least in the longitudinal center plane (E) of the trailer (10).

A multi-axle transport trailer having a plurality of axles includes a suspension comprising air bags associated with each axle, the air bags in communication with an air source, wherein air bags associated with different axles are capable of having different air pressures therein. The trailer further optionally includes a steering system associated with at least one axle, the axle including a tie rod connected between wheels on both ends of the axle, the steering system comprising cylinders configured to articulate the wheels, and a sensing device configured to monitor movement of the tie rod and facilitate actuating the cylinders to turn the wheels.

A multi-axle transport trailer having a plurality of axles includes a suspension comprising air bags associated with each axle, the air bags in communication with an air source, wherein air bags associated with different axles are capable of having different air pressures therein. The trailer further optionally includes a steering system associated with at least one axle, the axle including a tie rod connected between wheels on both ends of the axle, the steering system comprising cylinders configured to articulate the wheels, and a sensing device configured to monitor movement of the tie rod and facilitate actuating the cylinders to turn the wheels.

An axle load monitoring system is disclosed for a load-transporting motor vehicle having two or more primary axles and one or more auxiliary axles wherein the monitoring system detects a noncompliant axle carrying weight condition when the weight of the vehicle acting on any primary axle exceeds a prescribed maximum allowable axle carrying weight assigned to that axle and also when the weight acting on any group of the axles arranged consecutively exceeds a prescribed maximum allowable axle group carrying weight assigned to that axle group. And on such detection, the monitoring system recommends auxiliary axle usage that would result in no maximum allowable axle carrying weight and maximum allowable axle group carrying weight being exceeded provided the current gross vehicle weight does not exceed a prescribed maximum allowable gross vehicle weight determined by all of the axles and the current center of gravity of the vehicle is located within a certain compliance-manageable range. And with the monitoring system also recommending optimal auxiliary axle usage in other situations where full compliance may not be possible for various reasons.

An axle suspension has an axle support mounted in a swivel so as to rotate about an axis of rotation and a steering lever that is connected with the axle support in torque-proof manner and can be pivoted about the axis of rotation. The axle support accommodates at least one wheel axle and is mounted so as to be displaceable relative to the axis of rotation, in the wheel axle direction, on an adjustment path.