A mobile omnidirectional device having a base support, four wheels pivotally connected to the base support, each wheel being driven by a drive motor, a controller for individually controlling each of the drive motors, and a power source for powering the controller and the drive motors. The device provides a zero inch turning radius and can be configured as a jib hoist or a rolling transportation cart.

An electric truck includes drive units being provided to each of driving wheels on left and right sides of the electric truck, each of the drive units transmitting a driving force of a motor to each of the driving wheels, a body frame casing including a pair of mounting frame bodies extending in a vehicle width direction of the electric truck and being arranged apart in a vehicle front-rear direction and a pair of cross members connecting the pair of mounting frame bodies, and body-connecting parts connecting each of a vehicle front side and a vehicle rear side of each of the drive units arranged in a frame of the body frame casing to each of the mounting frame bodies. The pair of drive units are arranged so as to be adjacent to each other in the vehicle width direction inside the frame of the body frame casing.

A control device executes caster angle change control for controlling a driving force applying device or each of the driving force applying device and a braking force applying device to reduce a caster angle of a steered tire-wheel assembly when a steering request is received in a stopped state or in a creeping state without exceeding a predetermined vehicle speed at a point starting from the stopped state. In the caster angle change control, the control device applies, to one tire-wheel assembly out of a front tire-wheel assembly and a rear tire-wheel assembly, a driving force in a direction toward the other tire-wheel assembly and applies, to the other tire-wheel assembly, a braking force or a driving force in a direction toward the one tire-wheel assembly to achieve the stopped state or the creeping state in response to a request for acceleration or deceleration.

An automatic guided vehicles (AGV) can include: motors, wheels, motor controllers, and batteries coupled to an elongated frame. The two wheels can be mounted on opposite sides of the elongated frame. The wheels can be coupled to motors which can be controlled by motor controllers. The motors and motor controllers can be attached to the frame and a connector flange can be mounted on a center portion of the AGV frame. Linkages are used to couple a plurality of AGVs together. In a two AGV embodiment, the AGVs can be mounted to a front portion and a rear portion on a centerline of a platform. In a four AGV embodiment, front width, rear width, left length, and right length linkages can form a parallelogram with AGVs couple to each of the four corners of the parallelogram.

A drive device for an electric vehicle includes: a motor configured to be in a drive wheel of the electric wheel; and a reduction gear configured to reduce rotational speed of the motor and transmit resultant rotation to the drive wheel; the reduction gear including a sun gear configured to be driven by the motor, a first planetary gear that is configured to mesh with the sun gear and has a first number of teeth, a fixed ring gear that is meshed with the first planetary gear and arranged non-rotatably, a second planetary gear that is coupled to the first planetary gear and has a second number of teeth that is smaller than the first number of teeth, a movable ring gear that is meshed with the second planetary gear and arranged rotatably, and a transmission member configured to transmit rotation of the movable ring gear to the drive wheel.

A trailer for towing by a power vehicle is provided and generally includes a frame and a tandem wheel assembly. The frame forms an undercarriage chassis which the tandem wheel assembly is positioned there under. The undercarriage chassis includes a steerable rear wheel assembly, a steerable front wheel assembly, and an extension assembly moving the front wheel assembly between trailing position and a self-propelled position where the rear wheel assembly and the front wheel assembly are positioned to equally support the undercarriage chassis.

Systems, methods, and other embodiments described herein relate to improving propulsion of a vehicle. In one embodiment, a method includes, in response to detecting a vehicle configuration associated with an arrangement of a set of hub motors that are selectively attachable on driven wheels of the vehicle, loading a control setting according to the arrangement to one of a series configuration and a parallel configuration to indicate a power source for the driven wheels as one or more of a motor of the set of hub motors and a central propulsion system. The set of hub motors is structured to be selectively attached to the driven wheels without removing the driven wheels from the vehicle. The method includes managing power delivery to the set of hub motors and the central propulsion system of the vehicle to propel the vehicle according to the control setting.

A crane for lifting and transporting loads includes a base frame for transferring the loads of the crane onto a support surface by a plurality of wheels. The wheels are capable of rotating relative to the base frame so as to change the camber angle of the wheels.

A wheel assembly for an electric vehicle includes a wheel having a hub and an electric driving system for driving the hub. The electric driving system includes a driving device producing a driving moment. The hub defines an intra-hub space. The electric driving system further includes a speed reducer which is transmission-connected to a downstream side of the driving device and has a speed-reduction function. The electric driving system is coaxially connected to the hub, with at least a part accommodated in the intra-hub space.

A drive system for a side mounted cycle wheel, comprising a wheel hub for mounting the side mounted cycle wheel; a motor drive for driving the side mounted cycle wheel, the motor drive comprising an electric motor and a planetary gear reduction assembly positioned at least partially within the wheel hub and comprising one or more planetary gears; and, a rotary wheel hub bearing rotatably coupling the wheel hub to the motor drive, wherein the rotary wheel hub bearing is positioned laterally between the electric motor and the planetary gears.