The electric stroller comprises a frame, a child seat, an operator seat, a plurality of wheels, a port motor, a starboard motor, a control circuit, and a battery. The electric stroller may be a self-propelled conveyance. The child seat may be supported by the frame and may be adapted to transport a child. The operator seat may be coupled to the frame behind the child seat and may be adapted to transport an operator. A port driven wheel may be propelled by the port motor and a starboard driven wheel may be propelled by the starboard motor with the speed and direction of the port motor and the starboard motor controlled independently.

The present disclosure relates to an in-wheel driving device and a method for assembling the same, and the in-wheel driving device includes a driving motor including a motor shaft, a reducer which interworks with the driving motor to reduce a rotational force of the driving motor, a reducer housing, in which the reducer is disposed, a first gear connected to the reducer, and a support bearing part which supports the reducer on an outer side of the reducer, the reducer includes a sun gear connected to the motor shaft, a ring gear disposed in the reducer housing, a planetary gear disposed between the sun gear and the ring gear and engaged with the sun gear and the ring gear, and a carrier, in which the sun gear is disposed in an interior thereof, which supports the planetary gear and rotates in conjunction with rotation of the planetary gear.

A wheel hub motor for an electric vehicle includes eight sector-shaped through holes uniformly distributed in the circumference of a disc brake fixed to a shaft, and magnetic conductive ribs made of a magnetic conductive material arranged between two through holes. A stator core consists of nine square-C-shaped sub stator cores, each sub stator core surrounds two sides of the disc brake (6) and is fixed to a vehicle frame, adjacent sub stator cores are different by 30 degrees in a circumferential direction, a concentrated armature winding is wound around a yoke part at the middle portion of the sub stator core. A permanent magnet is fixed to a surface of an inner side of each sub stator core towards the disc brake, the brake caliper is fixed to the vehicle frame and is located at a position without the stator core in a circumferential direction.

An automobile-motor driving device equipped with speed reducer which has improved supply of lubrication oil to inside of the rolling bearings without sacrificing the function of the bearings, to reduce deformation in the rolling bearing outer ring. A parallel shaft gear speed reducer provides an automobile-motor driving device equipped with speed reducer. The parallel shaft gear speed reducer includes a plurality of gear shafts having two ends supported via rolling bearings fitted into bearing fitting holes in a speed reducer casing which houses the parallel shaft gear speed reducer. A groove in an inner circumferential surface of the bearing fitting hole into which the rolling bearing is fitted communicates between a space that houses the speed reducer and an inside space of the bearing fitting hole, at a location not crossed by the line of action of a load acting upon the rolling bearing due to the meshing of the gears.

A vehicle drive device with a variable transmission includes a first driving module that provides a driving force, a second driving module that controls a transmission ratio, a reduction gear part comprising a first sun gear, a second sun gear, and a planetary gear provided inside the second driving module, and an output part connected to one of the first sun gear, the second sun gear, and the planetary gear. In particular, the first driving module is connected to another one of the first sun gear, the second sun gear, and the planetary gear that is not connected to the output part.

A drill rig with a steering system may include a substructure having a wheelhouse, a drill floor arranged atop the substructure, a mast extending upwardly and above the drill floor, and a steering system arranged within the wheelhouse. The steering system may include a wheel assembly comprising an electric motor configured for driving rotational motion of a wheel, a deployment device configuring for deploying the wheel assembly to carry the drill rig, and a steering mechanism configured for selective engagement with the wheel assembly and rotating the wheel assembly.

A ride-on vehicle, such as for a child, includes a vehicle body and one or more wheels that support the vehicle body relative to a surface. At least one of the wheels includes a hub motor arrangement that provides a drive torque for propelling the vehicle. The hub motor arrangement includes a housing defining an interior space. An axle or other mounting element(s) define an axis of rotation of the housing. Preferably, the axle or other mounting element(s) do not pass completely through the housing. A motor drives the housing through a transmission. Preferably, the motor is a standard, compact motor that is positioned on the axis of rotation and can be laterally offset from a central plane of the housing. In some embodiments, a traction element is carried directly by the housing.

A powertrain, such as a vehicular electric powertrain, includes a cycloidal speed reducer configured to reduce a speed of an output of a traction motor. The cycloidal speed reducer includes an input member configured to couple with the output of the traction motor. A cycloidal disc has a main body made of a first material and defining a plurality of circumferentially-arranged holes extending through the body. The cycloidal disc has a plurality of inserts each extending through one of the holes. The inserts are made of a second material. A plurality of circumferentially-arranged pins are each disposed in one of the holes and contacting one of the inserts. The inserts provide reinforcement in contact areas between the disc and the pins.

A speed reduction unit (31) includes an input shaft (32) coupled to a motor rotary shaft (22) of a motor unit (21), an input gear (33) coupled to the input shaft, a cylindrical output shaft (41) coupled to an outer ring (12), and an output gear (40) coupled to the output shaft, and constructs a driving-force transmission path that reduces the rotational speed of the input gear and transmits the reduced rotational speed to the output gear. The output shaft is rotatably supported at both ends by a first output-shaft bearing (44) rotatably supporting an outer diameter of an axially outer end side of the output shaft and a second output-shaft bearing (46) rotatably supporting an inner diameter of an axially inner end side of the output shaft.

A motor gearbox and suspension arrangement is provided for a vehicle. The arrangement includes a drive system for driving a wheel of the vehicle, and the drive system includes an electric motor and a gear train associated with the motor. The arrangement further includes a housing that receives the motor and the gear train, and a suspension control arm having a first end configured to be connected to the vehicle and a second end configured to be connected to the housing.