A mobile tower for transportation to and rapid deployment at remote sites where the mobile tower can be engaged with the ground, the mobile tower including an extendable and retractable tower secured to a mobile support structure including a frame having a plurality of rapidly deployable outriggers, wherein the tower includes three series of pivotally interconnected tower sections or segments, sections or segments of which engage with segments of each of the other series when the tower is assembled; the mobile tower including a plurality of guy wires secured between the extendable and retractable tower and the respective outriggers to stabilize the tower after the tower is assembled. The guy wires are preferably secured to the extendable and retractable tower at first and second connecting positions that are displaced from one another about an outer perimeter. Methods of deploying the mobile tower are also disclosed.

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.

There is shown a mounting system for a crane that utilizes frictional engagement to a wall surface and does not use counterweights or conventional methods to resist crane forces.

There is shown a mounting system for a crane that utilizes frictional engagement to a wall surface and does not use counterweights or conventional methods to resist crane forces.

A wheeled crane and self-demounting and self-mounting methods for supporting legs thereof is disclosed. The wheeled crane includes a vehicle frame and auxiliary supports, and the auxiliary supports can enable the vehicle frame to keep balance. Since the wheeled crane has auxiliary supports, when the supporting legs are demounted or mounted, the auxiliary supports function as supporting legs, so that the supporting legs can be mounted and demounted by the operation part of the wheeled crane with no need of using an auxiliary crane, and thus the self-mounting and self-demounting of the supporting legs of the wheeled crane are realized.

A wheeled crane and self-demounting and self-mounting methods for supporting legs thereof is disclosed. The wheeled crane includes a vehicle frame and auxiliary supports, and the auxiliary supports can enable the vehicle frame to keep balance. Since the wheeled crane has auxiliary supports, when the supporting legs are demounted or mounted, the auxiliary supports function as supporting legs, so that the supporting legs can be mounted and demounted by the operation part of the wheeled crane with no need of using an auxiliary crane, and thus the self-mounting and self-demounting of the supporting legs of the wheeled crane are realized.

A system and method for fabricating, hauling, and deploying an industrial crane mat constructed from recycled windmill turbine spars. The system and method comprising: removing outer covering from a wind turbine blade with a trimmer, cutting the wind turbine blade into a plurality of uniform boards using a cutter, connecting the plurality of the plurality of uniform boards side by side into two rows of the plurality of uniform boards, using a plurality of rings, wherein the two rows each have a first end and a second end, and wherein the plurality of rings connects a first end of the first row to a second end of the second row together to form a crane mat, bifolding the crane mat onto itself in half along a latitudinal axis of the crane mat using a loader, loading the bifolded crane mat onto a trailer using a line attached to the bifolded crane mat to pull the bifolded crane mat onto the trailer and pulling the bifolded crane mat onto the trailer using a winch.

A system and method for fabricating, hauling, and deploying an industrial crane mat constructed from recycled windmill turbine spars. The system and method comprising: removing outer covering from a wind turbine blade with a trimmer, cutting the wind turbine blade into a plurality of uniform boards using a cutter, connecting the plurality of the plurality of uniform boards side by side into two rows of the plurality of uniform boards, using a plurality of rings, wherein the two rows each have a first end and a second end, and wherein the plurality of rings connects a first end of the first row to a second end of the second row together to form a crane mat, bifolding the crane mat onto itself in half along a latitudinal axis of the crane mat using a loader, loading the bifolded crane mat onto a trailer using a line attached to the bifolded crane mat to pull the bifolded crane mat onto the trailer and pulling the bifolded crane mat onto the trailer using a winch.

The present application relates to a mobile counterweight mechanism of a hoisting machine, comprising a support portion, a drive portion and a counterweight which is articulated to said support portion by means of a first articulation portion, said drive portion connected between said support portion and the counterweight so that said counterweight turns over outwards about said first articulation portion relative to a center of rotation of said hoisting machine, so as to increase a distance between a center of gravity of said counterweight and a center of rotation of said hoisting machine. The present application also relates to a hoisting machine. The present application raises a movement distance of a mobile counterweight and improves the overall stability of a hoisting machine in a turnover manner.