An electromechanical dual steering system for a utility vehicle includes two steering systems, each having a drive unit for actuating one steering linkage each for wheels of the utility vehicle. Each drive unit has an electric motor. The dual steering system has a main power supply for supplying the electric motors with energy. The electromechanical dual steering system is characterized in that the dual steering system has at least one emergency power supply for supplying at least one electric motor with energy in the event that the main power supply fails.

An actuating unit for use in a steering stabilizing apparatus that includes a housing, a first transmission element and a second transmission element, wherein the first transmission element and the second transmission element protrude into the housing from the outside and are configured to be displaced along a restoring axis, wherein the first transmission element engages a first pressure element at the first end of the first transmission element and wherein the second transmission element engages a second pressure element at the first end of the second transmission element, and wherein the first pressure element and the second pressure element are disposed within a chamber of the housing and are subjected by a restoring arrangement to a restoring force acting along the restoring axis.

A vehicle corner system for a dual-axle wheels assembly may include: a sub-frame; a first wheel interface having a first spinning axis about which a first wheel spins when connected to the first wheel interface; a first suspension linkage connected to and being transverse to the first wheel interface and to the sub-frame; a second wheel interface having a second spinning axis about which a second wheel spins when connected to the second wheel interface; a second suspension linkage connected to and being transverse to the second wheel interface and to the sub-frame; and a motion restrainer comprising a spring interconnecting the first suspension linkage and the second suspension linkage.

A steering system for a trailing axle of a motor vehicle includes an electric motor, a hydraulic pump, a first valve, and a working cylinder. The electric motor is configured to drive the hydraulic pump. The working cylinder has a central bore and a piston positioned in the working cylinder. The first valve is fluidically connected to the pump such that the first valve is configured to block flow between the central bore and the pump in response to pressure generated by the pump, and to release the flow in response to a non-pressurized state of the pump in order to divert hydraulic fluid from the working cylinder through the central bore via an adhesion-driven movement of the piston into a central position in the central bore. A method includes operating a steering system for a trailing axle of a motor vehicle of this type.

A steering assembly for a vehicle comprising a first, a second, a third, and a fourth wheel, a first steering actuator comprising a first actuating member, and a second steering actuator comprising a second actuating member. The first actuating member is connected to each of the first wheel and the second wheel. The second actuating member is connected to each of the third wheel and the fourth wheel. The steering assembly comprises a connection arrangement. The first and second steering actuators are connected to each other via the connection arrangement such that the first actuating member and the second actuating member move independently of each other when a relative movement parameter is within a predetermined relative movement range and the connection arrangement transfers movement between the first actuating member and the second actuating member when the relative movement parameter is outside the predetermined relative movement range.

A multiple-drive vehicle comprises a first driving position (3) for a first driver provided with first driving means (4), a second driving position (5) for a second driver provided with second driving means (6), a first pair of wheels (9) mechanically connected to the first driving means (4) and a second pair of wheels (10) mechanically connected to the second driving means (6). The first driving means (5) and the second driving means (6) are independent of each other for moving the respective pairs of wheels (9, 10) in an independent manner from each other.

A vehicle corner system for a dual-axle wheels assembly may include: a sub-frame; a first wheel interface having a first spinning axis about which a first wheel spins when connected to the first wheel interface; a first suspension linkage connected to and being transverse to the first wheel interface and to the sub-frame; a second wheel interface having a second spinning axis about which a second wheel spins when connected to the second wheel interface; a second suspension linkage connected to and being transverse to the second wheel interface and to the sub-frame; and a motion restrainer comprising a spring interconnecting the first suspension linkage and the second suspension linkage.

A hoisting machinery comprises a steering wheel and wheels, wherein the active steering system comprises an active steering device, a hydraulic power steering gear and a hydraulic power steering system, the active steering device is arranged between the steering wheel and a pitman arm of the hoisting machinery, so as to adjust a steering ratio of the steering wheel to the pitman arm according to a driving cycle of the hoisting machinery, and the hydraulic power steering gear is arranged between the steering wheel and the pitman arm, so as to control the hydraulic power steering system to drive steering of the wheels. In the active steering system of the present invention, a hydraulic power steering system is adopted to drive steering of wheels, which can improve capability of overcoming steering resistance and can be applicable to multiple chassis of cranes, thereby enlarging application ranges of the active steering system.

A hydraulic auxiliary axle steering control system is provided. In detail, there is provided a hydraulic auxiliary axle steering control system that can perform quick, precise, and safe control by changing an auxiliary axle steering control angle in accordance with a vehicle speed to problems with instability of driving, wear of tires, and a turning radius when a vehicle is driven at a low speed.

A corresponding vehicle includes two steerable axles VA1 and HA1 each with an angle sensor, wherein a rear axle HA1 in an all-wheel mode is synchronously steered with the front axle VA1 in the opposite direction, this being designated as a 4×4 steering system. The vehicle further includes a control device for setting the steering angle of the axles based on the data provided by angle sensors.