A wire rope device having adjustable length between a first end and a second end thereof. The wire rope device comprises a first wire rope extending from the first end and a second wire rope extending from the second end. A length adjusting structure is disposed between the first end and the second end. The length adjusting structure has the first wire rope and the second wire rope connected thereto. A support structure is disposed between the first end and the second end. The support structure has the length adjusting structure rotatable movable mounted thereto. A first guiding structure and a second guiding structure are disposed in the support structure for guiding the first wire rope and the second wire rope, respectively, such that when in operation a portion of the first wire rope extending from the first guiding element and a portion of the second wire rope extending from the second guiding element are disposed substantially along a same straight line. A drive mechanism is mounted to the support structure and connected to the length adjusting structure for adjusting the length of the wire rope device by rotatably moving the length adjusting structure.

A wire rope device having adjustable length between a first end and a second end thereof. The wire rope device comprises a first wire rope extending from the first end and a second wire rope extending from the second end. A length adjusting structure is disposed between the first end and the second end. The length adjusting structure has the first wire rope and the second wire rope connected thereto. A support structure is disposed between the first end and the second end. The support structure has the length adjusting structure rotatable movable mounted thereto. A first guiding structure and a second guiding structure are disposed in the support structure for guiding the first wire rope and the second wire rope, respectively, such that when in operation a portion of the first wire rope extending from the first guiding element and a portion of the second wire rope extending from the second guiding element are disposed substantially along a same straight line. A drive mechanism is mounted to the support structure and connected to the length adjusting structure for adjusting the length of the wire rope device by rotatably moving the length adjusting structure.

A method for mounting a rotor to a drive shaft of a wind turbine, the method comprising placing a hub on a surface, attaching a first, a second, and a third rotor blade to the hub to thereby make a rotor in situ. To protect the blades and to avoid fixed lifting lugs on the rotor, the method includes the step of wrapping a sling about each of the blades, attaching each sling to a fitting, lifting each fitting to thereby raise the rotor from the surface, and attaching the rotor to the drive shaft while the position and orientation of the rotor is controlled by the slings.

A flexible pulling rope includes a main rope body and a main rope sleeve. The main rope body is formed by connecting a rope from head to tail. The main rope body includes a connecting part formed by two parallel ropes and two pulling parts located at two ends of the connecting part. The main rope sleeve sleeves the connecting part. Two ends of the main rope sleeve are respectively connected to two ends of the connecting part. The present disclosure also provides a method for manufacturing a flexible pulling rope. By the arrangement of the above structure, the two ends of the main rope sleeve are respectively connected to the two ends of the connecting part. This can not only form a whole by the connecting part and the main rope sleeve, improve the strength of the product, and make the product bear higher loads when pulling heavy objects.

Various disclosed embodiments include apparatuses for handling construction site materials, methods of fabricating an apparatus for handling construction site materials, and methods of moving materials at a construction site. Given by way of example only and not of limitation, a non-limiting, illustrative apparatus for handling construction site materials includes: a frame defining an opening therein at a front of the frame; a mesh configured to fit over the frame; and a sliding mechanism disposable in the frame and configured to permit materials to be loaded into and unloaded out of the frame through the opening.

A rod and casing handler according to embodiments of the present disclosure includes a boom mount that is configured to be coupled to a boom. A clamp mounting structure is coupled to the boom mount and has a central portion, a first arm, and a second arm, where each arm extends from the central portion. A first clamp is coupled to the first arm and includes a first set of actuatable tongs and a first removable saddle plate. A second clamp is coupled to the second arm, and it includes a second set of actuatable tongs and a second removable saddle plate. The first removable saddle plate has a first arcuate surface sized and shaped to correspond to a cylindrical body having a first diameter, and the second saddle plate has a second arcuate surface sized and shaped to correspond to a cylindrical body having a second diameter.

An apparatus for supporting and redirecting a rigging rope comprising a ring having an outer annular surface and a central passage extending between first and second side edges defining an inner surface, wherein the outer surface includes at least two circumferential grooves therearound and wherein the inner surface has a curved cross-sectional profile extending between the first and second side edges.

The present disclosure generally pertains to a system for lifting and moving pre-fabricated building modules. In certain embodiments, a lifting apparatus is provided, wherein a frame is configured to attach to the exterior surface of a pre-fabricated module and wherein the lifting apparatus, along with an attached pre-fabricated module, may be lifted and moved either by rolling the lifting apparatuses or by hoisting the pre-fabricated module using a crane attached to brackets on the lifting apparatuses. The height of the lifting apparatus may be adjusted using a source of force, such as a crank-operated or hydraulic jack, to attach the lifting apparatus to a pre-fabricated module.

The present disclosure generally pertains to a system for lifting and moving pre-fabricated building modules. In certain embodiments, a lifting apparatus is provided, wherein a frame is configured to attach to the exterior surface of a pre-fabricated module and wherein the lifting apparatus, along with an attached pre-fabricated module, may be lifted and moved either by rolling the lifting apparatuses or by hoisting the pre-fabricated module using a crane attached to brackets on the lifting apparatuses. The height of the lifting apparatus may be adjusted using a source of force, such as a crank-operated or hydraulic jack, to attach the lifting apparatus to a pre-fabricated module.

A device for supporting a becket of a travelling block features a bar whose longitudinal dimension exceeds a distance between a first pair of support legs by which one end of the becket is pivotally supported on the travelling block. The bar is abutted against the first support legs from a side thereof facing a second pair of support legs, to which the second end of the becket is coupled when the becket is closed. A sling is connected to the bar via a connection lies intermediately of the bar's ends so as to reside between the first support legs. The sling is wrapped under the becket to an opposing side of the second pair of support legs, where a lifting cable is connected to the sling. Under tension from the lifting cable, the sling snugly cradles an underside of the becket to support same during opening of the becket.