Abstract: A brake device and a winch having the same are provided. The brake device includes a brake sleeve, a torsion spring, a sealing member and a braking assembly. The torsion spring is fitted over the braking assembly, and the brake sleeve is fitted over the torsion spring. The braking assembly is configured to drive the torsion spring to move between an expanded position and a retracted position, so as to lock and release the brake sleeve. The sealing member is arranged between the brake sleeve and the braking assembly, so that a sealing cavity is defined between the brake sleeve and the braking assembly.

Abstract: An electrically propelled towing apparatus includes a housing, in the housing being provided a reel, a stator, and a rotor configured to drive the reel; a mounting cavity is defined in the housing; and the stator is exposed and fixed in the mounting cavity. With elimination of the conventional housing of drive motor, the invention improves heat-dissipation effect.

Abstract: This invention is for safely speeding up the rewinding of a strap used to secure cargo on a truck or trailer. The Tool consists of a shaft which in use extends into the inside of a conventional strap winch drum. At the end of the shaft is a cylindrical elastomeric plug which is a tight fit into the inside of the winding drum. The shaft is then connected to a rotary drive apparatus comprising a hand crank or is power driven. Because the tool can be simply pushed into the drum and operated without the requirement of alignment of the shaft, for a mechanical connection between the shaft and winch drum, the operator's hands need not be on the tool other than on the handle which is not above the drum. This is typically quicker and safer than the prior art.

Abstract: Providing energy to an energy consuming piece of equipment and/or tool during offshore operations. Use is made of a crane including a substructure, a boom mounted on the substructure, one or more hoist winches and cables, as well as an object suspension device suspended from the boom by the cables. A piece of equipment or tool is suspended from the object suspension device. An energy storage unit is provided on the object suspension device and has an input connector. The boom may be provided with an output connector of an energy charging unit and in a lower supply position of the object suspension device it is disconnected from the input connector of the energy storage unit. The piece of equipment or tool is then run on energy supplied by the energy storage unit.

Abstract: An overhead-line using system includes: a plurality of supports; a main rope supported by the supports and configured such that both ends of the main rope are fixed; a work rope movably supported by the main rope; a winding device configured to wind up the work rope; a moving device movably supported by the main rope and connected to the work rope, the moving device being movable in the air when the work rope is wound up by the winding device; and a power generator configured to move along with movement of the work rope. The power generator generates electric power by moving relative to the main rope.

Abstract: The crane is hoisted from the ground to the nacelle by operating a cable winch at ground whereby a cable extends from the crane to a roller at the nacelle and to the cable winch. A hoist block with the roller is arranged on a jib at a first hoist block position above a second hinge part of a crane base and extended in horizontal direction from the nacelle. When a first hinge part of the crane is positioned at a corresponding second hinge part of the crane base, the cable extends in a downward direction directly from the roller of the hoist block and through a central opening in a pedestal. After mutual connection of the first and second hinge parts, the hoist block is removed from its first hoist block position.

Abstract: This work machine comprises: a telescoping actuator that moves a first boom with respect to a second boom; an electrical drive source that is disposed in a movable portion of the telescoping actuator; a first biasing mechanism that maintains the connection state between the telescoping actuator and the first boom; a first connection mechanism that switches the connection state between the telescoping actuator and the first boom on the basis of the power of the electrical drive source; a second biasing mechanism that maintains the connection state between the first boom and the second boom; a second connection mechanism that switches the connection state between the first boom and the second boom on the basis of the power of the electrical drive source; and a clutch that discretionally intermittently transmits the power of the electrical drive source to the first connection mechanism and the second connection mechanism.

Abstract: A heavy equipment recovery winch system includes a winch assembly mountable to a drive end of a heavy equipment vehicle, a hydraulic assembly and a fairlead assembly. The hydraulic assembly is mounted to a portion of the heavy equipment vehicle and the hydraulic assembly is operatively connected to the winch assembly. The fairlead assembly is mountable to the drive end of the heavy equipment vehicle to assist with guiding a cable from the winch assembly.

Abstract: The present specification provides a device and method for controlling a winch parcel delivery system through an uncrewed aerial vehicle (UAV) or drone. The example apparatus contemplates the use of a winch that will attach to a hook with active and passive release mechanisms through a winch line. The apparatus is enabled to attach to a parachute recovery system. The apparatus can detect when the ground has been reached to enable safe delivery of parcels. The apparatus can removably attach to various types of drones.

Abstract: According to some embodiments, a winch tightening apparatus comprises a mounting plate; a first moment arm coupled to the mounting plate and configured to provide leverage for rotating the mounting plate; and a pawl comprising a first end and a second end. The first end is pivotally coupled to the mounting plate such that the second end pivots to engage a ratchet gear when the mounting plate is rotated in a first direction and pivots to disengage the ratchet gear when the mounting plate is rotated in a second direction opposite the first direction. Some embodiments include a second moment arm coupled to the mounting plate and configured to provide leverage for rotating the mounting plate. Some embodiments include a counterweight coupled to the mounting plate and positioned to rotate the mounting plate in the second direction.

Abstract: A hoisting system of this disclosure includes a drawworks, a crown block or a compensator, a traveling block and at least one sheave assembly connected to the crown block or compensator in “Low Load/High Speed” mode and connected to the traveling block in “High Load/Low Speed” mode. A method to lift a load using a hoisting system of this disclosure uses a drawworks, a crown block or a compensator, a traveling block and at least one sheave assembly connected to the crown block or compensator in “Low Load/High Speed” mode and connected to the traveling block in “High Load/Low Speed” mode.

Abstract: A mobile lift crane includes a carbody, movable ground engaging members, a rotating bed, and a boom. A first structure is pivotally coupled to the rotating bed. A second structure is pivotally coupled to the first structure at a first end of the second structure. A moveable counterweight unit is coupled to a second end of the second structure. A linear actuation device moves the moveable counterweight unit toward and away from the rotating bed during a pick, move, and set operation by retracting and extending the linear actuation device, respectively. The moveable counterweight unit is never supported by the ground other than indirectly by the moveable ground engaging members. The linear actuation device moves the movable counterweight unit a greater horizontal distance from the rotating bed than a distance of a stroke of the linear actuation device that causes the moveable counterweight unit to move.

Abstract: This invention relates to a large crane with an at least two-part main boom, wherein a lower and an upper part of the main boom are pivotally coupled to each other an articulation point. The invention furthermore is directed to a method for erecting or depositing a corresponding large crane.

Abstract: A handheld hose guide which accommodates hoses of varying diameters and protects a user from debris on the hose when reeling the hose onto a hose reel, including a housing having a pair of housing parts for enclosing the hose, wherein the pair of housing parts when in a closed position form an interior, cylindrically-shaped longitudinal channel, which longitudinal channel generally conforms to a shape of the hose, a hinge attached to each of the pair of housing parts for providing angular movement of each housing relative to the other housing, a locking device attached to the pair of housing parts for securing the hose within the housing during operation of the hose guide, and rollers which are attached to springs that are biased inwardly, in order to accommodate hoses of various diameters and to provide constant compression on the hose during operation of the hose guide.

Abstract: A cable break-away device for a rescue hoist connects a cable to a cable drum of the rescue hoist. The cable break-away device provides overload protection to the rescue hoist by disconnecting the cable from the cable drum when the loads transmitted through cable become excessive. The cable break-away device is configured to fracture, releasing the cable from the cable drum, when the loads experienced by the cable break-away device exceed a predetermined failure set point. As such, the cable break-away device forms a mechanical fuse connecting the cable to the cable drum.

Abstract: An overhead line system includes a plurality of support posts, an overhead line supported by the support posts, a lifting device with which the overhead line is liftable, a suspension device that is connected to the overhead line and is movable in the air as the lifting device winds the overhead line, and a control device. The control device controls the lifting device so as to reduce tension when a predetermined condition relating to a tension abnormality of the overhead line is satisfied.

Abstract: Disclosed is a system for the storage and traction of a cable, in particular a synthetic cable fitted to an offshore crane. The storage/traction system includes a frame that carries in particular a storage device including a support carrying a storage reel through an assembly defining an axis of rotation. Between the storage reel and the support, the assembly includes of a single slewing ring including two rings that are free to rotate with respect to each other: —a fixed ring that is fastened to the support; and —a moving ring that is, on the one hand, fastened to the storage reel and, on the other hand, rotated by a motorization.

Abstract: A method of manipulating a drum of a drawworks assembly includes removing a first plurality of fasteners releasably coupling a drum with a coupling assembly, removing a second plurality of fasteners releasably coupling the drum with a cradle assembly, and lifting the drum vertically from the drawworks assembly.

Abstract: The disclosure relates to a crane (200) for erecting a tower including a plurality of tower segments (171, 72, 173, 174, 175), the crane (200) comprising: a telescopic mast (210), and a jib (230) rotatably mounted with respect to the telescopic mast (210) and comprising lifting equipment (240). The telescopic mast (210) comprises a lower mast segment (211) having one or more lower clamp assemblies (202, 204) for selectively gripping portions of the tower and a roller assembly (300) for rolling along the tower, and comprising one or more further mast segments (212, 213, 214, 215, 216) having an upper clamp assembly (206) for selectively gripping portions of the tower, the further mast segments (212, 213, 214, 215, 216) being slidable with respect to the lower mast segment (211). The disclosure also relates to methods for climbing a tower with a crane (200) and methods for mounting a wind turbine tower.

Abstract: The disclosure relates to a ballast device for fastening to a crane having first and second ballast elements. The first ballast element has first connection means for a releasable fastening to the crane, while both ballast elements are releasably connected to one another via second connection means. According to the disclosure, the first ballast element comprises an assembly device having abutment elements to which an abutment means can be attached to raise the ballast device. The abutment elements are arranged or are positionable such that the abutment means can be selectively attached to the assembly device for raising only the first ballast element above its center of gravity or for commonly raising both ballast elements above their total center of gravity. The disclosure further relates to a mobile crane having at least one such ballast device.