There is described a mobile drive system comprising at least one mobile drive unit capable of automated or autonomous navigation, wherein the mobile drive unit comprises: a platform comprising U or V type shape, the platform comprising two legs and a bent or front interconnector interconnecting both legs at one end; a first wheelset comprising two wheels, each arranged at a corresponding distal end of the legs of the platform; and a second wheelset comprising two or only one wheel at the interconnector of the platform.

An active-passive differential series-parallel connection supporting leg, a gravity-based closing series-parallel connection supporting leg, and a six-degree-of-freedom position-adjusting robot platform are provided. The six-degree-of-freedom position-adjusting robot platform is formed of a plurality of legs distributed in parallel, and includes a frame, a distributed controller, and multi-chain parallel legs, wherein a plurality of legs are fixedly connected with the frame through a base. The present disclosure integrates an omnidirectional movement and position adjustment to solve problems that the existing position-adjusting platform is fixed or moved inflexibly, the structure is over complicated, the occupation space is excessive, and the movement error is large, and thereby effectively expanding application range of the six-degree-of-freedom position-adjusting robot platform.

A coaxial co-located vehicle power drive and steering system includes a motor coupled to a transmission having a drive shaft with a first portion and a second portion mechanically interlocked by a spline having corresponding meshing features extending parallel to the drive shaft longitudinal axis. A drive shaft housing enclosing at least a length of the drive shaft, the drive shaft housing including a first portion and a second portion mechanically interlocked by a spline having corresponding meshing features extending parallel to the drive shaft longitudinal axis. A distal end of the drive shaft terminating within a differential gearbox in mechanical communication with an axle. A steering system coupled to the drive shaft housing second portion, the steering system including one or more rotatable gears which cause an angular rotation of the housing in relation to the drive shaft.

A vehicle (10) comprising: a vehicle body (12) defining a longitudinal axis “L”; a suspension system (40) mounted to the vehicle body (12) and connected to a drive wheel (32A, 32B) defining a drive wheel axis “A”, the suspension system (40) being configured to allow displacement of the drive wheel axis “A” relative to the vehicle body (12) with a component of the displacement occurring in a direction parallel to the longitudinal axis “L” of the vehicle body (12); a sensor (110) for providing an output indicative of a level of displacement provided by the suspension system (40); and a torque control device (120) for automatically varying torque supplied to the drive wheel (32A, 32B) in dependence upon the output of the sensor (110).

A vehicle (10) comprising: a vehicle body (12) defining a longitudinal axis “L”; a suspension system (40) mounted to the vehicle body (12) and connected to a drive wheel (32A, 32B) defining a drive wheel axis “A”, the suspension system (40) being configured to allow displacement of the drive wheel axis “A” relative to the vehicle body (12) with a component of the displacement occurring in a direction parallel to the longitudinal axis “L” of the vehicle body (12); a sensor (110) for providing an output indicative of a level of displacement provided by the suspension system (40); and a torque control device (120) for automatically varying torque supplied to the drive wheel (32A, 32B) in dependence upon the output of the sensor (110).

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 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.

The invention relates to a drilling rig with a drilling tower, a base structure, on which the drilling tower is arranged, and at least three support units being part of the base structure, each support unit having at least one wheel rotatable around a horizontal wheel axis, wherein at least one of the support units comprises a vertical steering axis, around which the at least one wheel can be turned by a steering drive. The invention further relates to a method for moving such a mobile drilling rig.

A steering head bearing arrangement for mounting a wheel module for a motor vehicle is provided with a steering rod connectable to a steering actuator and a wishbone, and a bearing flange connectable with a support frame of the motor vehicle, first and second roller bearings arranged in the bearing flange for mounting the steering rod, and a retaining ring screwed onto the steering rod for biasing the second roller bearing against the first roller bearing. By biasing the substantially spaced apart roller bearings against each other by means of the screwed-on retaining ring, radial and axial play of the steering rod in the bearing flange can be largely eliminated, thereby allowing to avoid wear-intensive peak stresses and allowing robust mounting of a steering rod of a motor vehicle.

A gear arm assembly for a vehicle includes gear arm housing having a first end, a second end, and an intermediate portion, the gear arm housing from the intermediate portion to the first end defining a first arm segment, and the gear arm housing from the intermediate portion to the second end defining a second arm segment. The assembly further includes a plurality of gears meshed together in series and housed within the gear arm housing, the plurality of gears including an intermediate gear within the intermediate portion of the gear arm housing. The assembly further includes a first wheel hub connected to a first gear of the plurality of gears at the first end of the gear arm housing, and a second wheel hub connected to a second gear of the plurality of gears at the second end of the gear arm housing. The assembly further includes a primary drive shaft extending into the gear arm housing at the intermediate portion and configured to connect a drive input to the intermediate gear, a spindle housing configured to connect the gear arm assembly to the frame, and a spindle rotatably coupled to and within the spindle housing and configured to allow for rotation of the gear arm housing relative to the spindle housing.