A trailer assembly for carrying coiled tubing includes a main beam assembly extending from a forward end of the trailer assembly to a rear end of the trailer assembly. The main beam assembly includes a forward portion that extends from the forward end of the trailer assembly, a rear portion that extends to the rear end of the trailer assembly, and a middle portion connected between the forward portion and the rear portion and configured to transfer load to the forward portion and the rear portion. The middle portion includes an upper beam section, and a lower beam section vertically separated from the upper beam section. The upper beam section is configured to share a load resultant from a bending force experienced by the lower beam section.

The application relates to carriage of goods by public roads. A freight handling apparatus includes a frame having a coupling mechanism for coupling to a motor vehicle, a container-carrying deck, a wheel suspension, an outer body in the form of a rectangular freight container, the inner space of the outer body being divided in horizontal direction by a plate to accommodate in the lower freight compartment a reusable tank with necessary control and measurement equipment, filling and drain fittings. The freight handling apparatus simplifies and secures its transportation on roads as much as possible by lowering the center of gravity and arrangement of the center of gravity of the tank close to the axis of the vehicle carrying the apparatus, facilitates maintenance and inspection of the tank without removing it from the frame, and makes easier loading and unloading of goods.

A motor-driven vehicle includes: a motor, a first rotational shaft to be driven to rotate by the motor, a clutch, a second rotational shaft to be driven to rotate by the motor via the clutch, an arm configured to rotate in association with rotation of the second rotational shaft, and at least two wheels, wherein each of the at least two wheels being attached to the arm at a position offset from a rotation center of the arm, and each of the at least two wheels being rotatable in association with rotation of the first rotational shaft.

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.

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 motor-driven vehicle includes: a motor, a first rotational shaft to be driven to rotate by the motor, a clutch, a second rotational shaft to be driven to rotate by the motor via the clutch, an arm configured to rotate in association with rotation of the second rotational shaft, and at least two wheels, wherein each of the at least two wheels being attached to the arm at a position offset from a rotation center of the arm, and each of the at least two wheels being rotatable in association with rotation of the first rotational shaft.

A motorized apparatus includes an articulated body assembly, a plurality of wheels coupled to the articulated body assembly, and at least one maintenance device coupled to the articulated body assembly. The articulated body assembly includes a first body and a second body. The articulated body assembly includes a joint coupling the first body to the second body. The first body is pivotable relative to the second body about a pivot axis extending through the joint. At least one wheel is transitionable between a first position and a second position. The motorized apparatus also includes a motor drivingly coupled to the plurality of wheels and configured to move the articulated body assembly relative to a surface. The motorized apparatus further includes at least one magnet coupled to the at least one wheel.

A work vehicle includes a vehicle body, a plurality of traveling devices disposed on the right and left sides on the front and rear sides of the vehicle body respectively, a plurality of bending link mechanisms configured to liftably support each one of the traveling devices to the vehicle body and a plurality of drive operating devices capable of changing the posture of each one of the plurality of bending link mechanisms. The vehicle body is split into a front side body section and a rear side body section. The front side body section and the rear side body section are configured to be bendably pivotable relative to each other via a pivot interlocking mechanism.

A work vehicle includes a vehicle body, a plurality of traveling devices disposed on the right and left sides on the front and rear sides of the vehicle body respectively, a plurality of bending link mechanisms configured to liftably support each one of the traveling devices to the vehicle body and a plurality of drive operating devices capable of changing the posture of each one of the plurality of bending link mechanisms. The vehicle body is split into a front side body section and a rear side body section. The front side body section and the rear side body section are configured to be bendably pivotable relative to each other via a pivot interlocking mechanism.

A dolly for indoor and outdoor use including a supporting frame extending along a main axis of extension and a loading platform mounted above said frame. The dolly also includes at least one steering and drive wheel coupled to the bottom of the frame and at least one pair of idle wheels coupled to the bottom of the frame and positioned symmetrically relative to the main axis of extension. The dolly also comprises includes a control structure including a plurality of sensors configured for measuring a plurality of operating parameters of the dolly and for generating respective signals representing operating parameters and a processing unit configured to receive the representative signals and to impart a steering command to the at least one steering and drive wheel at least as a function of the representative signals.