A mobile electronic vehicle (EV) charging station is provided. The charging station may include one or more charging bays for charging electric vehicles (EVs). The charging station includes a plurality of batteries within an interior compartment to supply power for charging the EVs. There is a power delivery subsystem to control supply of electrical power from the batteries to the charging bays. The charging station self-driving to move between a first position to a second position. In some cases, the charging station includes a drive subsystem that controls speed and/or steering based on wireless communications.

A mobile platform includes a base having a first surface and at least one drive wheel coupled to the base so as to movable with respect to the base first surface. A drive wheel retention mechanism is coupled to the at least one drive wheel and is structured to retain the at least one drive wheel in a first position in which the at least one drive wheel extends to a first distance from the first surface along a first side of the first surface. A plurality of roller elements is also coupled to the base and is structured to extend to a distance from the first surface along the first side of the first surface. The distance of the plurality of roller elements from the first surface is less than the first distance of the at least one drive wheel from the first surface.

A mobile platform includes a base having a first surface and at least one drive wheel coupled to the base so as to movable with respect to the base first surface. A drive wheel retention mechanism is coupled to the at least one drive wheel and is structured to retain the at least one drive wheel in a first position in which the at least one drive wheel extends to a first distance from the first surface along a first side of the first surface. A plurality of roller elements is also coupled to the base and is structured to extend to a distance from the first surface along the first side of the first surface. The distance of the plurality of roller elements from the first surface is less than the first distance of the at least one drive wheel from the first surface.

Provided is a suspension device including a drive wheel, a first driven wheel that is disposed on one side in a front-rear direction with respect to the drive wheel, a second driven wheel that is disposed on the other side in the front-rear direction with respect to the drive wheel, a bogie link member that supports the drive wheel and the first driven wheel and is oscillatable around a first oscillation axis, and a rocker link member that supports the second driven wheel and the bogie link member and is oscillatable around a second oscillation axis. When viewed from a left-right direction, the first oscillation axis is not on the same vertical line as a rotation axis of the drive wheel and is located above the rotation axis in a vertical direction and located inside a contour of the drive wheel.

A retractable wheel assembly may include a fork that may be pivotally coupled to an object and a wheel that may be rotatably mounted on the fork. The retractable wheel assembly may further include a hollow housing that may be made up of an elongated housing portion pivotally coupled to the fork from a first end of the elongated housing portion and a curved housing portion integrally formed with an opposing second end of the elongated housing portion. The retractable wheel assembly may further include a weight disposed and moveable within the housing.

A robot includes a body having an internal opening. The robot further includes a first wheel configured to deploy out of the internal opening and to retract into the internal opening. The robot further includes a second wheel configured to deploy out of the internal opening and to retract into the internal opening. The robot further includes a sensor configured to determine a location of the robot. The robot further includes a controller configured to control each of the first wheel and the second wheel, wherein in response to the location of the robot being at a predetermined location, the controller is configured to cause the second wheel to deploy out of the internal opening and to cause the first wheel to retract into the internal opening.

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 tag axle system for a concrete mixing vehicle including an axle including a right wheel assembly and a left wheel assembly, an actuator coupled to the axle to move the axle between a raised position and a lowered position relative to a vehicle chassis, a stabilizer mount plate structured to be coupled to the vehicle chassis, a stabilizer bar rotationally coupled to the stabilizer mount plate, a right stabilizer bar arm rigidly coupled to the stabilizer bar and coupled to the right wheel assembly, and a left stabilizer bar arm rigidly coupled to the stabilizer bar and coupled to the left wheel assembly.

A tag axle system for a concrete mixing vehicle including an axle including a right wheel assembly and a left wheel assembly, an actuator coupled to the axle to move the axle between a raised position and a lowered position relative to a vehicle chassis, a stabilizer mount plate structured to be coupled to the vehicle chassis, a stabilizer bar rotationally coupled to the stabilizer mount plate, a right stabilizer bar arm rigidly coupled to the stabilizer bar and coupled to the right wheel assembly, and a left stabilizer bar arm rigidly coupled to the stabilizer bar and coupled to the left wheel assembly.

A vehicle suspension assembly includes a trailing axle carried by a frame of the assembly. The frame can retract to a retracted state from an extended state and extend from the retracted state to the extended state. The retraction and extension can occur along a longitudinal axis of the frame. An operator can pivotally raise and lower a free end of frame in the retracted or extended state along an arcuate path when the vehicle suspension assembly connects to a vehicle.