Provided is a hoist arm structure having top and bottom ends, and an attachment element to releasable attach the bottom end of the hoist arm structure to an attachment location of a utility vehicle whereby the hoist arm is able to pivot relative to said attachment location, the hoist system further comprising an adjustment winch having an adjustment cable extending therefrom with adjustment cable having a distal end opposite the crank, and such distal and adjustment winch adapted for securing to respective structural elements of a structural frame system, wherein such structural elements are located on opposite lateral side of the utility vehicle.

Provided is a hoist arm structure having top and bottom ends, and an attachment element to releasable attach the bottom end of the hoist arm structure to an attachment location of a utility vehicle whereby the hoist arm is able to pivot relative to said attachment location, the hoist system further comprising an adjustment winch having an adjustment cable extending therefrom with adjustment cable having a distal end opposite the crank, and such distal and adjustment winch adapted for securing to respective structural elements of a structural frame system, wherein such structural elements are located on opposite lateral side of the utility vehicle.

Provided is a jack device easily storable in a storage space of a machine body of a work machine. The jack device includes an arm, a cylinder, a float and a pin. The arm is rotatably connected to the machine body. The cylinder is connected to the arm rotatably about a cylinder rotary axis so as to have an upright posture and a tilt posture. The pin rotatably connects the float to a rod of the cylinder. The jack device is stored in a state where the cylinder is contracted and in the tilt posture and the bottom surface of the float lies along a facing part of the machine body that faces the storage space.

Provided is an outrigger pad hoist apparatus that raises and lowers outrigger pads on a mobile crane. The outrigger pad hoist apparatus includes a frame having two arms that form an angle such that frame conforms and may be coupled to a rear end of an elevated deck of a mobile crane system. The outrigger pad hoist apparatus includes a winch mechanism, a chain, and an outrigger pad holder coupled to the chain. The outrigger pad holder moves along the frame via movement of the chain by the winch mechanism. Outrigger pads may be placed on the outrigger pad holder. The outrigger pads may be moved to a lower position for easier removal by operating the winch mechanism. Mobile cranes having the outrigger pad hoist and methods of operation and manufacture are also provided.

Provided is an outrigger pad hoist apparatus that raises and lowers outrigger pads on a mobile crane. The outrigger pad hoist apparatus includes a frame having two arms that form an angle such that frame conforms and may be coupled to a rear end of an elevated deck of a mobile crane system. The outrigger pad hoist apparatus includes a winch mechanism, a chain, and an outrigger pad holder coupled to the chain. The outrigger pad holder moves along the frame via movement of the chain by the winch mechanism. Outrigger pads may be placed on the outrigger pad holder. The outrigger pads may be moved to a lower position for easier removal by operating the winch mechanism. Mobile cranes having the outrigger pad hoist and methods of operation and manufacture are also provided.

The supporting structure for a mobile concrete pump for connecting a distribution boom includes two support leg boxes that cross each other diagonally, and a boom pedestal attached thereto having a turret that has an opening that is surrounded at its one end at least partially by a pivot mount receptacle for a pivot bearing for pivoting the distribution boom of the concrete pump with respect to the turret. Part of the wall of the turret is formed by a side wall of the supporting leg boxes that cross each other, wherein the side walls of the supporting leg boxes are, in a first region in which same form part of the wall of the turret, free of joining points such that loads introduced via the turret directly into the side walls are distributed beyond the first region without shear load of a joining point in the side walls.

Provided is an outrigger pad hoist apparatus that raises and lowers outrigger pads on a mobile crane. The outrigger pad hoist apparatus includes a frame having two arms that form an angle such that frame conforms and may be coupled to a rear end of an elevated deck of a mobile crane system. The outrigger pad hoist apparatus includes a winch mechanism, a chain, and an outrigger pad holder coupled to the chain. The outrigger pad holder moves along the frame via movement of the chain by the winch mechanism. Outrigger pads may be placed on the outrigger pad holder. The outrigger pads may be moved to a lower position for easier removal by operating the winch mechanism. Mobile cranes having the outrigger pad hoist and methods of operation and manufacture are also provided.

Provided is an outrigger pad hoist apparatus that raises and lowers outrigger pads on a mobile crane. The outrigger pad hoist apparatus includes a frame having two arms that form an angle such that frame conforms and may be coupled to a rear end of an elevated deck of a mobile crane system. The outrigger pad hoist apparatus includes a winch mechanism, a chain, and an outrigger pad holder coupled to the chain. The outrigger pad holder moves along the frame via movement of the chain by the winch mechanism. Outrigger pads may be placed on the outrigger pad holder. The outrigger pads may be moved to a lower position for easier removal by operating the winch mechanism. Mobile cranes having the outrigger pad hoist and methods of operation and manufacture are also provided.

Provided is a work vehicle that can be transported by being loaded onto a trailer without having the outriggers removed. The work vehicle (rough terrain crane) is transported by being loaded onto a low bed trailer including a low bed and a high portion (first high bed, second high bed) higher than the low bed in at least one of the front and the rear of the low bed, and includes: outrigger units (front outrigger unit, rear outrigger unit) that are mounted to the front and rear of a vehicle body; and a lift unit that lifts and lowers the outrigger units (front outrigger unit, rear outrigger unit with respect to the vehicle body.

The present invention provides a vehicle leveling device with an upper arcuate support presenting a substantially planar surface and a lower support with an arcuate groove configured for rotational receipt of the upper arcuate support opposite the substantially planar surface, a rotational axis aligned with the arcuate groove and extending between a front and a rear associated with the upper arcuate support and parallel to the substantially planar surface; the upper arcuate support configured for rotation about the rotational axis.