A boom working device has a boom, mounted on and extending from a boom support, on which an end effector mounting interface is formed. The boom is equipped with two linear output structures, each in engagement with one of two drive wheels of the boom support. With respect to the boom support, the boom is both pivotable around a main axis and also capable of linear movement at right-angles to the main axis. Through harmonised rotary actuation of the drive wheels an operating movement of the boom may be generated, consisting either of a pivoting movement alone or of a linear movement alone or of the pivoting movement with simultaneously superimposed linear movement.

A tower crane includes a tower on which a rotating portion is pivotally mounted and configurable between a service configuration in which the rotating portion can be rotatably driven by a motorized orientation system, and an out of service configuration in which the rotating portion is rotatably released to be able to be oriented in the direction of the wind. A control/command unit activates a monitoring mode in the out of service configuration to detect, depending on variations in the angle of orientation or the angular speed of the rotating portion, if the rotating portion is in one of the following movement states: an autorotation state corresponding to a rotary movement of the rotating portion in a given direction over at least one complete turn; or an oscillation state corresponding to a back and forth movement of the rotating portion about the orientation axis.

Disclosed is a crane, in particular for offshore application. The crane includes a bearing the assembly between a pedestal and a carrier frame. The bearings are distributed over the height of the support structure and include upper bearing, which include a radial contact rolling bearing including rolling elements and a smooth cylindrical raceway, coaxial to the axis of rotation. The radial contact rolling bearing allows a longitudinal translational degree of freedom of the rolling elements over the height of the cylindrical raceway.

Disclosed is a crane, in particular for offshore application. The crane includes a bearing the assembly between a pedestal and a carrier frame. The bearings are distributed over the height of the support structure and include upper bearing, which include a radial contact rolling bearing including rolling elements and a smooth cylindrical raceway, coaxial to the axis of rotation. The radial contact rolling bearing allows a longitudinal translational degree of freedom of the rolling elements over the height of the cylindrical raceway.

A swing gear set for a large scale or heavy machine can be produced from components of a swing gear set including an internal gear ring assembled from plurality of internal toothed segments and/or an external gear ring assembled from a plurality of external toothed segments. The internal toothed segments and/or the external toothed segments are produced by bisecting a metal block in the shape of a rectangular prism into first and second intermediate blanks. The metal block can be produced by a forging process and the intermediate blanks can be machined by various machining process to produce the finished internal and external toothed segments.

A method and system for removing and storing vehicle hard tops is disclosed. The hard top removal system is comprised of a rack with webbing straps, a ceiling anchor, a wall anchor, a lifting line, pulleys and a winch. An object of the invention is to provide an easy means to remove and store a vehicle hard top when the vehicle is parked in a typical residential garage.

A method and system for removing and storing vehicle hard tops is disclosed. The hard top removal system is comprised of a rack with webbing straps, a ceiling anchor, a wall anchor, a lifting line, pulleys and a winch. An object of the invention is to provide an easy means to remove and store a vehicle hard top when the vehicle is parked in a typical residential garage.

A foldable boom for conveying an item, said foldable boom being foldable about at least one folding axis, said foldable boom being locatable in a folded stowed position, and moveable to unfolded extended positions; said foldable boom having a near end arranged for pivotal movement about a first horizontal axis located on a turret, said turret being rotatable about a vertical axis; said foldable boom having first conveying apparatus to convey an item therealong, internally within said foldable boom, to a remote end of the foldable boom; wherein said foldable boom is foldable about a folding axis, and a pivoting shuttle equipped with a clamp to releasably hold an item is provided at said folding axis to transfer said item between said first conveying apparatus in boom elements connected about said folding axis.

A pivot-forming crane element for a rotating portion of an element-mounted crane includes a framework on which a motor-driven orienting system, a hoisting winch and a dispensing winch are mounted. The motor-driven orienting system includes a pivot mechanism about an orienting axis and at least one orienting electric motor cooperating with the pivot mechanism to make the framework pivot about the orienting axis. The hoisting winch is provided with a hoisting electric motor cooperating with a hoisting drum around which a hoisting rope is wound. The dispensing winch is provided with a dispensing electric motor cooperating with a dispensing drum around which a dispensing rope is wound.

A pivot-forming crane element for a rotating portion of an element-mounted crane includes a framework on which a motor-driven orienting system, a hoisting winch and a dispensing winch are mounted. The motor-driven orienting system includes a pivot mechanism about an orienting axis and at least one orienting electric motor cooperating with the pivot mechanism to make the framework pivot about the orienting axis. The hoisting winch is provided with a hoisting electric motor cooperating with a hoisting drum around which a hoisting rope is wound. The dispensing winch is provided with a dispensing electric motor cooperating with a dispensing drum around which a dispensing rope is wound.