Abstract: A gantry crane adapter for a two-post lift includes a pair of angle brackets, each of which has a first, horizontal leg and second, vertical leg. The first leg includes an aperture, and a short hook extends in parallel, spaced relation along an outer surface of the second leg. The hook of each bracket is received in the slot in a carriage in a respective post of the two-post lift to removably connect each bracket to the respective carriage, with the first, horizontal legs of the respective brackets projecting toward each other. A load bearing beam is positioned across the brackets such that an internally threaded boss at each end of the beam is received in an aperture in a respective bracket, and a bolt with a washer is threaded down into the boss, to support and retain the load bearing beam across the angle brackets.

Abstract: The disclosure relates to an assembly head for a telescopic boom that can be separated into an inner and an outer boom set and that is reversibly mountable at an inner telescopic section of the outer boom set. The assembly head comprises a pulley head having deflection pulleys and a telescopic tube section that is arranged the pulley head, that can be pushed into the inner telescopic section from its end, and that has a substantially smaller length than the inner telescopic section. The disclosure further relates to a separable telescopic boom having an assembly head in accordance with the disclosure, to a mobile crane having a telescopic boom in accordance with the disclosure, and to a method for the self-assembly of an assembly head in accordance with the disclosure at the outer boom set of a telescopic boom.

Abstract: A method for handling of an offshore wind turbine component includes using a vessel having a hull on which a motion compensating crane is mounted. The crane includes a main boom; a main boom luffing assembly; a mobile hoist cable suspension member; and a hoist winch and a hoist cable driven by the hoist winch. An object suspension device is suspended from the hoist cable. The mobile hoist cable suspension member is supported by a motion compensating support device that is fitted to the tip end of the main boom, the motion compensating support device including one or more motor powered motion displacement actuator assemblies and a motion compensating support device controller. The method includes connecting the offshore wind turbine component to the object suspension device; and operating the motion compensating support device to provide motion compensation in at least one direction of the object suspension device and the connected offshore wind turbine component.

Abstract: The present disclosure relates to a mobile crane, which comprises a superstructure, a main boom, which extends away from the superstructure and is arranged so as to be pivotable thereon, a derrick boom, which extends away from the superstructure and is arranged so as to be pivotable thereon, and a winch assembly, wherein the winch assembly comprises a main-boom winch for actuating the main boom and a derrick-boom winch for actuating the derrick boom. The mobile crane is characterised by an assistance apparatus for facilitating or fully automatically carrying out a raising and/or setting-down process of the derrick boom, which apparatus is designed to actuate the main boom and the derrick boom, such as the main-boom winch and the derrick-boom winch, at the same time.

Abstract: A pipelayer machine may comprise a machine chassis; an operator cabin supported by the machine chassis; an engine supported by the machine chassis; and a boom coupled to the machine chassis. The operator cabin may include a seat assembly. The operator cabin may be stationary with respect to the machine chassis. The pipelayer machine may comprise a front portion and a rear portion. The engine may be provided in the rear portion. The boom may be provided forward with respect to the seat assembly.

Abstract: A pipelayer machine may comprise a machine chassis; a towing winch assembly coupled to the machine chassis; an operator cabin supported by the machine chassis; an engine supported by the machine chassis; and a boom coupled to the machine chassis. The pipelayer machine may comprise a front portion and a rear portion. The towing winch assembly may be provided in the front portion of the pipelayer machine. The operator cabin may be provided between the towing winch assembly and the engine.

Abstract: The present invention relates to a crane with a height-adjustably mounted control or personnel stand that can be lifted and lowered by at least two lifting elements, wherein the two lifting elements are articulated to a balancing rocker that is mounted on a rocker bearing head connected to the control or personnel stand so as to be luffable about a horizontal pivot axis, wherein a monitoring and/or safety device is provided to monitor and/or ensure the safety of the control stand. According to the invention, the pivot axis is configured as a measurement axis for detecting the load state of the luffable bearing of the balancing rocker and for providing a load signal to the monitoring and/or safety device.

Abstract: A hoisting crane or multi configurations crane system for use on an offshore vessel, such a vessel and methods for operating are disclosed. The hoisting crane comprises a boom having a proximal portion, an intermediate portion and a distal portion. An extension mechanism is provided that is configured to allow the distal portion to be slid relative to the intermediate portion from a retracted configuration to an extended configuration. In the retracted configuration, the intermediate portion is arranged substantially within the distal portion.

Abstract: A vehicle crane having a superstructure with a jib system including a main jib mounted in a luffable manner on the superstructure, with a jib head and a luffable additional jib and at least one luffing support supported in the region of a luffing axis of the additional jib. At least one guying support of the jib system is arranged in such a manner that a tensioner starting on the one hand from the superstructure and/or from a counterweight and connected on the other hand to the additional jib is guided via the at least one guying support and the at least one luffing support. A main jib extension is incorporated between the jib head and the additional jib with the at least one guying support supported at the main jib extension to obtain a longer design of the jib system with the highest possible permissible bearing load.

Abstract: A system includes a crane and an exchangeable tool. The crane and the tool respectively, include an upper tool connector with tool retainers and a lower tool connector which can be interconnected, e.g. a male and female connector, e.g. the lower tool connector of the tool being embodied as a shank provided with a shoulder and the upper tool connector as a tool clamp with a female, open-centered body. A tool suspension device includes the upper tool connector and a travelling block member. The tool clamp has multiple mobile tool retainers adapted to—in a non-operative position—allow introduction of the shank of the tool from below into the shank receiving passage and—in an operative position—engage below the shoulder of the shank that has been introduced into the passage so as to suspend the tool. The upper tool connector may include a bearing allowing for swivelling of the open-centered body, and e.g.

Abstract: The invention relates to a crane, in particular a rotary tower crane (1), comprising a crane boom (3), from which runs a hoisting cable (6) connected to the load hook (7), as well as comprising a load hook positioning device (8) for determining the load hook position, wherein the load hook positioning device (8) has at least three electromagnetic radio modules (9) exchanging radio signals with one another, of which at least one radio module is attached to the load hook and at least two further radio modules are attached to the crane structure and/or in the environment of the crane in a spaced apart manner, as well as an electronic evaluation device for evaluating the radio signals and determining the position of the load hook from the radio signals.

Abstract: A method for securing an angular position of a crane jib displaceable in lifting and in lowering by a winch integrating a motor driving a drum on which is wound a rope and secured to a platen provided with arcuate oblong locking holes, the method including measuring a speed parameter representative of an angular speed of the jib, controlling the motor to displace the jib with a limitation of the speed parameter to a first maximum value and a limitation of a motor torque to a first limit value, until reaching an angular position in which a lock is aligned with and locked into the locking hole, and controlling the motor to displace the jib in lowering with a limitation of the speed parameter to a second maximum value and a limitation of the motor torque to a second limit value, until the speed parameter is null for a predetermined time period to stop the motor.

Abstract: The present disclosure relates to a lifting device, in particular a mobile crane or a cable-operated excavator, that comprises a superstructure, a main boom that starts from the superstructure, a luffing boom that starts from the end of the main boom remote from the superstructure, a winch arrangement, and a tilting moment detection unit for determining the tilting moment acting on the lifting device by the position of the main boom and the luffing boom. The disclosure is characterized by an apparatus for assisting or for fully automatic carrying out an erecting and/or placing down procedure of a boom system comprising the main boom and the luffing boom that is configured to carry out the steps for erecting and/or placing down the boom system in dependence on the tilting moment detected by the tilting moment detection unit.

Abstract: A hydraulic actuator for a mobile crane, in particular for a locking device of a telescoping device. The hydraulic actuator has a double chamber cylinder with a first cylinder chamber and a second cylinder chamber oriented in an opposite direction to the first cylinder chamber, a first piston rod for the first cylinder chamber, and a second piston rod for the second cylinder chamber. A first restoring spring restores the first piston rod to its main position and a second restoring spring restores the second piston rod to its main position. The main position of the first piston rod is its pushed-in position and the main position of the second piston rod is its extended position.

Abstract: An automated collapsible tower crane comprising a mast with telescopic portions, a boom with boom sections articulated with each other by respective rotary joints, a boom folding system to unfold and fold the boom by the rotary joints wherein each proximal and distal rotary joint is associated with at least one hydraulic actuator to unfold and fold boom sections, a mast folding system to fold the mast down, wherein in the transport position the boom sections are folded down one on top of the other and on the mast, and the boom folding and unfolding system acts independently of the folding and telescoping system of the mast, and comprises hydraulic actuators to fold and unfold the boom sections.

Abstract: A lifting machine includes a machine chassis, a boom extending from the machine chassis, a connector extending from the boom for coupling to a load, a control system that determines a rated lifting capacity of the machine, based on an orientation of the machine chassis and a lifting load, and a display. The display indicates the rated lifting capacity relative to a total lifting capacity, and the display also indicates the lifting load relative to the rated lifting capacity and the total lifting capacity.

Abstract: A tower crane for assembling a wind turbine includes a boom assembly including a boom and a hoisting block coupled to the boom, an extendable tower assembly including a plurality of tower sections, and a transport assembly including a central support frame coupled to the tower assembly, a self-propelled transporter configured to transport the tower crane, and a diagonal brace extending between the central support frame and the transporter, wherein the diagonal brace includes a linear actuator configured to selectably extend and retract the diagonal brace.

Abstract: An offshore wind turbine installation vessel includes a crane provided with a computerized crane control system. The computerized crane control system is linked to the slew drive, the luffing drive, and the hoisting winch of the crane, and is programmed to perform a foundation pile installation routine providing a coordinated pattern of slew motion of the superstructure and of luffing motion of the boom structure, as well as operation of the hoisting winch so that the load connector of the crane moves from a foundation pile pick up position thereof, where the load connector is connected to the top end of a horizontally oriented foundation pile stored on a storage deck, to a foundation pile overhoarding position thereof, wherein the foundation pile is in vertical suspended from the load connector, outside of the hull.

Abstract: Provided is a crane including a boom. The crane hoists a suspended load through a hook from a tip of the boom, and position adjustment control for causing a position of the hook and a position of the tip of the boom to be close to each other as viewed in a vertical direction is performed until the suspended load is separated from a ground surface from a start of a hoisting motion.

Abstract: A boom, of a machine, may include a first member; a second member opposite the first member; and a support structure. The support structure may comprise a first support member; a second support member; and a third support member. The first member, the first support member, and the second support member may define a first opening. The second member, the second support member, and the third support member may define a second opening. A first area of the first opening may exceed a second area of the second opening.