Provided herein are portable hot tubs comprising a hot tub, a frame, and a pivotable wheel assembly comprising a suspension system for adopting three positions, a transport position, a drain position, and a use position.

A fluid containment system comprises a frame, a tank, a rear suspension system, a front lifting assembly, a cooperative coupling mechanism adapted to couple the fluid containment system to a vehicle, and a rear lifting assembly. The front lifting assembly is adapted to lift the front of the tank. The rear lifting assembly is adapted to lift the rear of the tank. The fluid containment system comprises a working condition and a mobile condition. A lower portion of the frame rests on a surface when the mobile fluid containment system is in the working condition. The lower portion of the frame is elevated with respect to the surface when the mobile fluid containment system is in the mobile condition. The fluid containment system is adapted to be towed by the vehicle when the cooperative coupling mechanism is coupled to the vehicle and the fluid containment system is in the mobile condition.

A tiltable trailer that can assume a high, or road, position, and a low loading position in which the trailer is tilted with respect to the ground. The trailer includes wheels; a chassis mounted on an axle that pivots with respect to the wheels; an actuator for actuating the pivoting of the axle relative to the wheels to vary the position of the chassis with respect to the ground, the actuator including a flexible element secured to the axle and a tensioner attached to the chassis for adjusting tension of the flexible element; and a lock for locking the trailer in the high position, which is separate from the actuator. The lock includes a sliding locking bar, a first end of which is secured to the axle and a second end of which cooperates with a locking mechanism, mounted on the chassis, when the trailer is in the high position.

An apparatus has: a chassis; wheel assemblies at opposed sides of the chassis, each wheel assembly having: a ground engaging wheel; a wheel mount; a control arm pivotally connected between the wheel mount and the chassis; and an actuator pivotally connected between the wheel mount of the ground engaging wheel and the chassis; in which the actuator is operable to, in use, cause the ground engaging wheel to: pitch down with increasing camber from an upright position into a facedown position to lower the chassis; and pitch up with decreasing camber from the facedown position into the upright position to raise the chassis. A method involves lowering the chassis by operating the actuators to pitch the ground engaging wheels down into the facedown position; and raising the chassis by operating the actuators to pitch the ground engaging wheels up into the upright position.

A vehicle including a controlled vertical position chassis, in order to be able to be moved into a low position supported on the ground, and, associated with each wheel, a suspension arm, an arm actuator, and a safety device capable of limiting the accidental lowering of the chassis, the device being able to adopt an active state wherein the rotation of the suspension arm can be limited, the device including an actuator, a cylinder of which is mounted on the chassis and a piston of which is mounted on the suspension arm, or vice versa, the actuator defining a first chamber connected to a first and a second fluid passage through the cylinder, the second passage being connected to a first fluid pipe fitted with a safety valve.

A trailer with at least one tilting axle unit, comprising a telescopic support or slide (3), a hinge (221) and a fifth-wheel coupling (4), designed to longitudinally move at least one posterior axle unit and to lift and rotate it so that a vehicle can be loaded on a loading deck (13) of said trailer.

Aspects of the disclosure relate to a trailer having a frame suitable for transporting an item, such as an oil drilling pipe. The trailer includes a plurality of stabilizers for supporting the frame over a surface, at least one axle attached to a plurality of wheels. The trailer further includes an axle pin group includes first and second axle pins interconnected to respective hydraulic cylinders. The trailer further includes leaf springs connected to respective sides of the frame and mounted to the axle. Retraction of the axle pins away from the leaf springs enables movement of the frame with respect to the axle due to the weight of the frame, if the stabilizers are retracted. In this configuration, the frame can be raised and lowered with respect to the surface. Methods of use are also disclosed.

A system for moving a work machine includes a towing vehicle, a trailer arranged to be towed with the towing vehicle, and a towing arrangement for the towing vehicle. The towing vehicle includes a towing vehicle's towing point arranged under its chassis between the front axle and rear axle. The trailer includes a chassis and a towing arm, a deck, and wheels. The towing arrangement includes: a drawbar having a first end pivoted to the towing vehicle's towing point and a second end having a drawbar's towing point for the trailer to be towed, a first pivot under the rear axle and in a transverse direction of the vehicle chassis for pivoting the drawbar to the towing vehicle's towing point, a second pivot having a vertical axis and being fitted to the drawbar's second end to transmit a load of the trailer being towed rigidly to the first pivot, a third pivot, located at one end of the drawbar, to permit the trailer to tilt in a transverse direction of the towing vehicle, a vertical support for the second pivot, an upper drawbar, and a connector arm, wherein the drawbar, the upper drawbar, and the connector arm form a closed structure around the rear axle.

Aspects of the disclosure relate to a trailer having a frame suitable for transporting an item, such as an oil drilling pipe. The trailer includes a plurality of stabilizers for supporting the frame over a surface, at least one axle attached to a plurality of wheels. The trailer further includes an axle pin group includes first and second axle pins interconnected to respective hydraulic cylinders. The trailer further includes leaf springs connected to respective sides of the frame and mounted to the axle. Retraction of the axle pins away from the leaf springs enables movement of the frame with respect to the axle due to the weight of the frame, if the stabilizers are retracted. In this configuration, the frame can be raised and lowered with respect to the surface. Methods of use are also disclosed.

A trailer with at least one tilting axle unit, comprising a telescopic support or slide (3), a hinge (221) and a fifth-wheel coupling (4), designed to longitudinally move at least one posterior axle unit and to lift and rotate it so that a vehicle can be loaded on a loading deck (13) of said trailer.