Abstract: Disclosed are systems and methods for providing a user installable gantry crane, wherein the gantry runways, supported by columns, utilize a lightweight truss, having a high weight to strength modulus, that permits assembly of the system without the need for rigging equipment.

Abstract: The present invention relates to a crane having a load hook directly/indirectly fastened to the crane hoist rope and having a frame suspended at the load hook for taking up a special load, in particular for taking up a rotor blade of a wind turbine, wherein the control element(s) of a frame suspended at the load hook is/are guided along a guider rope region of the crane hoist rope.

Abstract: A hoist or capstan fitted with a driving pulley. The latter comprises a peripheral groove for taking a cable and two substantially parallel pulley halves, each pulley halve comprising a flank forming the lateral side of the peripheral groove and being axially pulled toward each other so as to prevent the slipping of a cable by elastic means formed of a continuous polymer ring.

Abstract: Apparatus for an integrated winchhead winch are described herein. An integrated winchhead comprising a frame, a winch and a wedge. The frame may include a mounting base at a first end and a bow stop mounting area at a second end of the frame. The winch may be housed within the frame. The wedge may be attached to the mounting base and may also be mountable on a base stand, wherein the wedge may be adjustably mounted to the base stand and the mounting base. The winchhead may be mountable at two different angles and be vertically adjustable along the base stand. A bow stop may be secured to the bow stop mounting area.

Abstract: A towrope winch with a safety shutoff device includes a winch configured to wind a rope; and a safety shutoff device which deactivates the winch if, during winding of the rope, a foreign object enters a winch intake along with the rope to actuate the safety shutoff device.

Abstract: A handheld control device for a pet leash includes a rope reeled on a braking reel, a pawl unit pivotable by operation of a spring-loaded pushbutton to engage one ratchet tooth of the braking reel so as to disable rotation of the braking reel in an unwinding direction, and a locking lever operable to swing a weight end between unlocked and locked positions to disengage from and engage the pawl unit, respectively, so as to selectively prohibit rotation of the braking reel in both winding and unwinding directions and control the length of the rope that extends outwardly of a housing.

Abstract: A jib part (10) for a crane, in particular a mobile crane, a includes an inner shaping shell (15), tensile elements (11) within hollow profiles (12) and a sheathing, made from a layer of transverse fibers (13) covered by a protective or slide layer (14). The tensile elements (11) are biased and fitted with sensors and/or actuators.

Abstract: Disclosed is a hoist using a friction wheel to maximize horizontal movement of a load to be lifted while preventing a wire from deviating from a winding orbit while being wound on a wire drum, the friction wheel having a simplified configuration and being designed to stably support horizontal and vertical movable guide rollers. The hoist includes a single friction wheel on which a wire at a winding side is wound, a wire drum on which the wire at a drawing side is wound, a driven friction wheel through which the wire is guided from the friction wheel to the wire drum, vertical and horizontal stationary guide rollers and vertical and horizontal movable rollers for guidance of the wire, a movable roller mount to horizontally reciprocate the horizontal and vertical movable guide rollers, and upper and lower sheaves to guide the wire to the friction wheel.

Abstract: The invention relates to a method and to an apparatus for reeving a hoisting cable of a crane, wherein the load to be transported can be suspended from a lower hook block (3), which is held by the hoisting cable (12), from single-loom to double-loom and from double-loom to triple-loom mode, in which an auxiliary cable and/or a chain are utilized such that the weight of the lower hook block causes the hoisting cable to be pulled around the respective roller.

Abstract: A lift assembly system and method can include: a funnel-shaped drum having a constant diameter portion and a gradually increasing diameter portion; a cable management system adapted to position a cable in a single layer in a tray; a beam clamp tube receiver adapted to allow a tube to slide relative to a beam and be secured to the beam; a cable keeper and a slack line detector adapted to maintain cables in position about a drum upon loss of cable tension; a horizontally oriented low profile cable adjuster adapted to adjust the length of a cable; an overspeed braking mechanism; a fleet pivot arm pivotable on the end of a tube so as to guide cables along a desired fleet angle; and/or a pull-type load sensor connected between a tube and a drum adapted to sense changes in a load force and adjust movement of a load.

Abstract: A hoist assembly for overhead lifting including an upwardly extending attachment member, a downwardly depending shank coupled to the attachment member and having a polygonal cross sectional shape, a hoist body coupled to the downwardly depending shank, and a plate positioned between the upwardly extending attachment member and the hoist body, that defines a first circular aperture that matingly receives the polygonal shank and a second polygonal aperture laterally spaced from the first circular aperture. The plate is moveable between a first position, in which the polygonal shank extends into the first circular aperture, and a second position, in which the polygonal shank extends into the second polygonal aperture. Rotation of the attachment member with respect to the plate is permitted when the plate is in the first position, and rotation of the attachment member with respect to the plate is inhibited when the plate is in the second position.

Abstract: A gripper device for a transport vehicle includes a base plate, a guide rail provided on an upper surface of the base plate, a pair of guide blocks arranged to be movable in a substantially horizontal direction toward and away from each other along the guide rail, and a pair of gripping parts. Each of the gripping parts includes a horizontal portion fixed to an upper surface of one of the guide blocks and arranged to extend substantially parallel to the upper surface of the base plate, a vertical portion arranged to extend downward from the horizontal portion to a position lower than that of the base plate, and a claw section provided on a lower end of the vertical portion and arranged to grip an object.

Abstract: The invention relates to a crawler crane comprising two crawler supports (9) with rotating crawlers (8). Both crawler supports (9) are connected by a transversal bridge (10). A superstructure (3) of the crawler crane comprises at least one crane jib that can pivot about a vertical axis and is connected to the transversal bridge (10). A pivotable articulation connects the transversal bridge (19) in a pivotable manner to the crane superstructure (3). At least one of the crawler supports (9) is connected to the transversal bridge (10) by means of a double link (11). A lower link (12) of the double link (11) is articulated on the crawler support (9) by means of a crawler support lower pivotable axis (13) and on the transversal bridge (10) by means of a transversal bridge lower pivotable axis (14).

Abstract: A well pump extractor, which includes a base rotably supporting a spindle, a pipe guide, and a pipe catch, extracts a well pump from within a well by winding electrical wiring attached to the pump around the spindle. During an extraction, a pipe guide guides the path of water pipe connected to a pump. If the electrical wiring fails mechanically during an extraction, the pipe catch catches the water pipe, which prevents the pump from falling to the bottom of the well.

Abstract: A well pump puller, which includes a base, a support element supporting a spindle, and an elastic element, extracts a well pump from within a well by winding electrical wiring attached to the pump around the spindle. During an extraction, at least a portion of any arising yank forces are absorbed by deformation of the elastic element, which reduces the risk of the wiring failing mechanically. A spindle can include a rotation element for rotating the spindle; a spindle lock and safety latch to limit rotation of the spindle; a wire guide to guide the wire; a pipe guide to guide a water pipe connected to the pump; a pipe catch to catch the pipe if the wiring fails; and a drill abutment that can abut a drill used to rotate the rotation element.

Abstract: An assist device for use with a tensioning bar, the device comprising a pair of surfaces in spaced apart relation affixed to a u-shaped wall, creating an open ended box, and a pair of through bores located along a central vertical axis of each surface. The assist device is removably or permanently coupled to the tensioning bar. The tensioning bar is inserted into a truck winch, and a user facing the assist device and the truck winch, perpendicular to longitudinal axis of the bar, pushes down on an upper surface of the assist device using hands or a foot in a pumping motion, causing the bar to pivot downwards from the winch, and thus tightening or loosening the strap.

Abstract: This invention relates to a portable winch assembly (10; 210) comprising a footplate (12; 212), a support frame (14; 214) which is locatable upon the footplate, a magazine (16; 216) which is locatable upon the support frame, and a drive mechanism (22; 222) which is connectable to the magazine to drive the magazine to rotate. The foot plate, support frame, magazine and drive mechanism comprise separable components which may be transported separately to a site of use and assembled into the winch at the site of use. The invention can provide a portable winch assembly capable of generating a tensile force of up to 10 tonnes, and is therefore suitable for pipe pulling and pipe bursting applications for example, and yet is made up of parts which can readily be carried to the site of use, which site of use may be inaccessible for vehicles.

Abstract: A lift-assist apparatus, including an arm having a medial portion, a distal end, and a proximal end. One or more pulleys are attached to a surface of the medial portion. An upright support includes an upper horizontal bar and a lower horizontal bar, and a hinge point is formed medially on the upper horizontal bar. A turnbuckle has a fixed end and a connecting end, the fixed end attached to the lower horizontal bar, the connecting end adapted to attach to the medial portion. The hinge point is configured as a pair of opposing tabs defining a space in which the medial portion resides, wherein a pin can be inserted through each tab and through the medial portion to pivotally fix the arm on the upright support such that the arm can pivot in an upward and downward direction and be locked into a fixed position using the turnbuckle.

Abstract: Provided is a mobile crane capable of adjusting a counterweight height with no use of a costly hydraulic cylinder. The mobile crane comprises a lower propelling body, a upper slewing body, a boom pivotably attached to the upper slewing body, a mast which is at the rear of the boom and adapted to be raised and lowered so as to raise and lower the boom, a counterweight which is at the rear of the upper slewing body and hung from the mast through a guy line, and a counterweight-lifting cylinder attached to the counterweight so as to be extended to vertically push up the counterweight with respect to a ground surface. The counterweight-lifting cylinder has a cylinder body, a piston partitioning an internal space of the cylinder body into an upper head-side cylinder chamber and a lower rod-side cylinder chamber, and a rod extending from the piston downwardly beyond an lower end of the cylinder body.

Abstract: The danger of a jib falling off a boom due to an erroneous operation during movement of the jib between a stowage position and an extended position is eliminated. The jib is provided with a pivot pin insertion state detector, pivot pin retraction blocking element, a coupling pin insertion state detector, first and second cables, wherein movement of a coupling pin to a retracted position is restricted by a coupling pin retraction blocking element via the first cable when the pivot pin insertion state detector has detected that the pivot pin is retracted, and movement of the pivot pin to the retracted is restricted by the pivot pin retraction blocking element via the second cable when the coupling pin insertion state detector has detected that the coupling pin is retracted, so that simultaneous removal of both of the pivot pin and the coupling pin is prevented.