A vehicle height adjusting device includes a vehicle height adjusting unit, a prediction unit, and a vehicle height control unit. The vehicle height adjusting unit adjusts a vehicle height to one of a first state and a second state. In the first state, the vehicle height is set to a predetermined height, and in the second state, the vehicle height is set lower than the first state. The prediction unit predicts whether a drive battery (lower portion) of a vehicle interferes with a road surface in the second state. The vehicle height control unit controls the vehicle height adjusting unit to set the vehicle height to one of the first state and the second state. When the prediction unit predicts an interference between the drive battery of the vehicle and the road surface, the vehicle height adjusting unit restricts a transition from the first state to the second state.

Systems, methods, and computer readable storage media provide dynamic chassis and tire status indications associated with a vehicle. Lift axle status data may be graphically represented by a lift axle indicator dynamically provided in a shared notification/messaging space positioned within the driver's line of sight during a lift axle transition. The lift axle indicator may include a side-view representation of the vehicle including a plurality of axle sections indicating the status of each axle. The lift axle indicator may be suppressed when air pressure is stabilized. Additionally, a graphical representation of data associated with statuses (e.g., air pressure, temperature) of each tire may be provided in a top-down view representation of the vehicle including its associated tire/axle configuration and the tire pressure for each tire. The graphical representation may be configured to reflect the correct number of axles and tires per position, and may further include a tractor versus trailer designation.

A selectively locking rotational bearing element includes at least one bearing element supporting an outer race for rotational movement and a plurality of locking elements disposed circumferentially about an inner surface of the outer race. An actuator selectively moves the plurality of locking elements into engagement with the outer race to restrict rotational movement of the outer race and selectively move the plurality of locking elements away from engagement with the outer race such that the outer race is free to rotate relative to the locking elements.

A selectively locking rotational bearing element includes at least one bearing element supporting an outer race for rotational movement and a plurality of locking elements disposed circumferentially about an inner surface of the outer race. An actuator selectively moves the plurality of locking elements into engagement with the outer race to restrict rotational movement of the outer race and selectively move the plurality of locking elements away from engagement with the outer race such that the outer race is free to rotate relative to the locking elements.

A booster for a trailer system is provided comprising a control system in communication with a sensor(s) for determining the direction and speed of the booster when in motion. The control system comprises instructions corresponding to one or more booster operations such as: detection of a reverse state, retraction of a suspension system when the reverse state is detected; engagement of a steer axle lock when the reverse state is detected; detection of a forward state; extension of the suspension system when the forward state is detected; disengagement of the steer axle lock when the forward state is detected; detection of a high-speed forward state; engagement of the steer axle lock when the high-speed forward state is detected; detection of a low-speed forward state; and disengagement of the steer axle lock when the low-speed forward state is detected.

An adjustable floating traction bar is disclosed. The traction bar comprises a rigid body having a threaded portion on a first distal end to receive a threaded eyelet having a spherical joint to provide a connection point to an axle of a vehicle. The traction bar further comprises an opposing distal slip end being machined and fitted with a UHMW (ultra high molecular weight) polyethylene bushing that acts as a slip-joint the slip joint having a first end that mounts to the UHMW polyethylene bushing of the tubular body and an opposing end having an eyelet to provide a connection point to a vehicle frame. A two-stage nested coil spring located inside the slip end of the rigid body that rests against the slip joint end when it is inserted into rigid body.

The present invention relates to a forecarriage of a rolling motor vehicle with three or four wheels, comprising: a forecarriage frame (16); at least one pair of front wheels (10′, 10″) kinematically connected to each other and to the forecarriage frame (16) by a kinematic roll mechanism (20) which enables the same to roll in a synchronous and specular manner; a roll block system (100) comprising a rod (110) which directly connects to each other at the two ends thereof by means of ball joints or hinging means equivalent to ball joints (101, 102), two parts of the forecarriage both subject to rolling movements of said two front wheels or said forecarriage frame and a forecarriage part subject to said rolling movements. The roll block system comprises a blocking device (111a, 112a; 130) adapted to block the rotation angle of said rod at the two ends thereof with respect to a rolling plane of said forecarriage.

A spur gear includes an input wheel, an output wheel, and an intermediate wheel, which engages via a gear with a gear on the input wheel and with a gear on the output wheel. A blocking mechanism is provided on the intermediate wheel which, in a first operating state, permits the transmission of torque from the input wheel to the output wheel and, in a second operating state, blocks the transmission of torque from the input wheel to the output wheel. At least one guide track for the blocking mechanism is formed on the intermediate wheel, the guide track having a radially inner guide wall and a radially outer guide wall. A latching position for blocking the blocking mechanism is formed on the radially outer guide wall.

A spur gear includes an input wheel, an output wheel, and an intermediate wheel, which engages via a gear with a gear on the input wheel and with a gear on the output wheel. A blocking mechanism is provided on the intermediate wheel which, in a first operating state, permits the transmission of torque from the input wheel to the output wheel and, in a second operating state, blocks the transmission of torque from the input wheel to the output wheel. At least one guide track for the blocking mechanism is formed on the intermediate wheel, the guide track having a radially inner guide wall and a radially outer guide wall. A latching position for blocking the blocking mechanism is formed on the radially outer guide wall.

A method for controlling the safe operation of a rear axle of a set of combined axles powered by a motor vehicle, particularly for a vehicle designed to carry loads and which have 6×4, 8×4 or 10×4 type traction configurations, or tridem models formed by three drive axles. The method includes a set of steps and activities that ensure proper and safe operation of systems and mechanisms for uncoupling and raising a rear axle of a vehicle, and more specifically checking a status of certain operating parameters of the rear axle and of the vehicle itself in order to permit or prevent uncoupling and coupling, as well as raising and lowering of the rear axle of the vehicle.