A crane includes a crane body, a boom, a hoisting winch, and a rope holding device pressing a rope wound around a drum of the hoisting winch against the drum. The rope holding device includes an oscillating arm whose proximal end is attached to a base of the hoisting winch using a support shaft and distal end oscillates in a direction close to or away from the drum, and a rope presser which is attached to a distal end of the oscillating arm, extends in an axial direction of the drum between a pair of flanges, and abuts against the rope wound around the drum. A weight member, which biases a distal end side of the oscillating arm in a direction close to the drum by the gravity with the support shaft as a fulcrum, is provided at the proximal end of the oscillating arm.

A crane includes a crane body, a boom, a hoisting winch, and a rope holding device pressing a rope wound around a drum of the hoisting winch against the drum. The rope holding device includes an oscillating arm whose proximal end is attached to a base of the hoisting winch using a support shaft and distal end oscillates in a direction close to or away from the drum, and a rope presser which is attached to a distal end of the oscillating arm, extends in an axial direction of the drum between a pair of flanges, and abuts against the rope wound around the drum. A weight member, which biases a distal end side of the oscillating arm in a direction close to the drum by the gravity with the support shaft as a fulcrum, is provided at the proximal end of the oscillating arm.

An embedded bionic winch for sampling and exploration of a polar sub-glacial lake, including an actuating chamber, a power chamber, a transition chamber, a sensor chamber, a cable arranging chamber and a slip ring chamber, where the actuating chamber, the power chamber, the transition chamber, the sensor chamber, the cable arranging chamber and the slip ring chamber are arranged in sequence, and are coaxially connected; the power chamber provides a power for the winch, and realizes sealing of motors located therein under water with a certain depth; the transition chamber realizes a power transmission between the power chamber and the cable arranging chamber; the sensor chamber is used for mounting of a tension sensor; the cable arranging chamber realizes retraction and release of a cable through the precise cooperation of a drum and a lead screw, and the slip ring chamber contains a slip ring.

An embedded bionic winch for sampling and exploration of a polar sub-glacial lake, including an actuating chamber, a power chamber, a transition chamber, a sensor chamber, a cable arranging chamber and a slip ring chamber, where the actuating chamber, the power chamber, the transition chamber, the sensor chamber, the cable arranging chamber and the slip ring chamber are arranged in sequence, and are coaxially connected; the power chamber provides a power for the winch, and realizes sealing of motors located therein under water with a certain depth; the transition chamber realizes a power transmission between the power chamber and the cable arranging chamber; the sensor chamber is used for mounting of a tension sensor; the cable arranging chamber realizes retraction and release of a cable through the precise cooperation of a drum and a lead screw, and the slip ring chamber contains a slip ring.

A lift assembly including an article to be lifted between a lowered position and a raised position, a flexible drive element coupled to the article and defining a longitudinal axis, a power mechanism coupled to the flexible drive element, a drum powered by the power mechanism and dimensioned to facilitate winding of the flexible drive element onto the drum, and a cable keeper providing a force on the flexible drive element to bias the flexible drive element toward the drum.

A lift assembly including an article to be lifted between a lowered position and a raised position, a flexible drive element coupled to the article and defining a longitudinal axis, a power mechanism coupled to the flexible drive element, a drum powered by the power mechanism and dimensioned to facilitate winding of the flexible drive element onto the drum, and a cable keeper providing a force on the flexible drive element to bias the flexible drive element toward the drum.

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.

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.

In a cable-driven three-dimensional crane system, an end-effector is moved within an operating volume defined by dynamically shifting draw points. Winch assemblies pull the end-effector toward the respective draw points. Each winch assembly includes a cable router that manages travel of its drive cable through the associated draw point. Cable length encoders determine the effective length of each drive cable, from which one method of end-effector position calculations can be made. Draw point angle trackers assess the instantaneous lateral and vertical angles of each drive cable as it vectors away from its draw point toward the carrier from which another method of end-effector position calculations can be made as well as enabling self-calibration techniques. Sensitive mechanical and electrical components are sheltered in heated enclosures that wipe debris from the drive cable and track with its changing position. Multi-zone applications allow sharing of winch assemblies.

In a cable-driven three-dimensional crane system, an end-effector is moved within an operating volume defined by dynamically shifting draw points. Winch assemblies pull the end-effector toward the respective draw points. Each winch assembly includes a cable router that manages travel of its drive cable through the associated draw point. Cable length encoders determine the effective length of each drive cable, from which one method of end-effector position calculations can be made. Draw point angle trackers assess the instantaneous lateral and vertical angles of each drive cable as it vectors away from its draw point toward the carrier from which another method of end-effector position calculations can be made as well as enabling self-calibration techniques. Sensitive mechanical and electrical components are sheltered in heated enclosures that wipe debris from the drive cable and track with its changing position. Multi-zone applications allow sharing of winch assemblies.