A vehicle crane, such as a mobile crane, includes a main jib and a main jib extension that is mounted thereon and can be luffed by at least one luffing cable. The vehicle crane includes at least one anchoring support that is arranged on the main jib and guides the luffing cable in order to anchor the main jib to provided improved load-bearing capacity.

A vehicle crane, such as a mobile crane, includes a main jib and a main jib extension that is mounted thereon and can be luffed by at least one luffing cable. The vehicle crane includes at least one anchoring support that is arranged on the main jib and guides the luffing cable in order to anchor the main jib to provided improved load-bearing capacity.

A crane for lifting and transporting loads includes a base frame to transfer loads onto a support surface by a plurality of contacts in contact with the surface. An arm for lifting loads is rotatable relative to the base frame around a vertical axis. The angular range of the arm around the vertical axis includes angular fields, and load sensors. Each load sensor is associated with a respective contact to detect the force on the support surface. A control system obtains, from the load sensors, the value of the force, and detects the angular field where the arm is located. The control system determines a danger condition based on the values detected by the load sensors, according to different criteria in at least two different angular fields. The control system carries out predetermined functions of the crane, if the danger condition is reached.

A crane for lifting and transporting loads includes a base frame to transfer loads onto a support surface by a plurality of contacts in contact with the surface. An arm for lifting loads is rotatable relative to the base frame around a vertical axis. The angular range of the arm around the vertical axis includes angular fields, and load sensors. Each load sensor is associated with a respective contact to detect the force on the support surface. A control system obtains, from the load sensors, the value of the force, and detects the angular field where the arm is located. The control system determines a danger condition based on the values detected by the load sensors, according to different criteria in at least two different angular fields. The control system carries out predetermined functions of the crane, if the danger condition is reached.

Described is a telehandler (1) comprising an operating arm (10) to which is coupled a winch (2) equipped with a motor-driven drum (21), on which is wound a cable (22) to which is fixed a hook (23), also comprising first means (51) for detecting the quantity of cable (22) unwound.

Described is a telehandler (1) comprising an operating arm (10) to which is coupled a winch (2) equipped with a motor-driven drum (21), on which is wound a cable (22) to which is fixed a hook (23), also comprising first means (51) for detecting the quantity of cable (22) unwound.

A computer-controlled mobile crane is disclosed herein, comprising a column which is rotatable around its vertical axis, a hydraulically actuated primary arm, a hydraulically actuated secondary arm, an attachment point to which a gripping assembly is attached. The components are actuated by a hydraulic control unit controlled by a computer control unit and corresponding software that generates an internal coordinate system on the basis sensors mounted on the crane and an optical measuring unit. The crane is capable of automatically using the gripping assembly to transport a load from an initial point to and end point where the load should be deposited while avoiding one or more obstacles in the path of travel of the gripping assembly and the load.

A computer-controlled mobile crane is disclosed herein, comprising a column which is rotatable around its vertical axis, a hydraulically actuated primary arm, a hydraulically actuated secondary arm, an attachment point to which a gripping assembly is attached. The components are actuated by a hydraulic control unit controlled by a computer control unit and corresponding software that generates an internal coordinate system on the basis sensors mounted on the crane and an optical measuring unit. The crane is capable of automatically using the gripping assembly to transport a load from an initial point to and end point where the load should be deposited while avoiding one or more obstacles in the path of travel of the gripping assembly and the load.

A pallet lifter for use with a crane enables lifting of materials on a pallet, and then unloading of the materials at one or more locations, such as on a roof of a building. The pallet lifter may include a cage or a retainer frame that contains the material, with a pusher of the lifter used to push out individual portions of the materials. The pusher may unload the material from the top of the pallet of material, such as by sliding it down a ramp. The pusher alternatively may unload the material from the bottom of the stack on the pallet, by pushing it through a slot in the cage. For top-unloading embodiments the pallet lifter may include an assembly for changing the position of the pusher relative to the frame and the pallet, for example moving the pusher downward layer by later as the materials are unloaded.

Provided is an assembly method for a crane, by which method a crane including a strut can be assembled easily. The assembly method for the crane includes a strut coupling step of coupling a base end of a strut, a cylinder connecting step of extending a cylinder unit having one end supported by the strut, the cylinder unit being capable of extending/contracting, to connect the other end of the cylinder unit to the boom, a strut raising step of causing the cylinder unit to contract to raise the strut, and a strut supporting step of stretching a stretching member, such as a rear side guy line or a luffing cable, between a front end of the strut and a base end of the boom to support the strut in a raised state.