We generally describe a winch (100) comprising: a plurality of ropes (130, 140) coupleable to a first load (200) or to different respective second loads (200, 210); a support frame (110); and a first roller (150) moveably coupled to the support frame (110), wherein a first rope (150) of the plurality of ropes (130, 140) is moveable over the first roller (150); wherein a movement of the first roller (150) is configured to shorten and/or lengthen a usable length of the first rope (140) of the plurality of ropes (130, 140), and wherein the shortening and/or lengthening of the usable length of the first rope (140) is configured to raise and/or lower the first load (200) or one of the second loads (200, 210) to which the first roller (150) is coupleable via the first rope (140).

Modular winch system and associated devices are disclosed. In one or more embodiments the modular winch system includes a spool and a spool frame including a first frame portion and a second frame portion configured to rotatably support the spool. In one or more embodiments the system includes a plurality of winch modules including a motor, a gearbox, and a fairlead each connected to the spool frame, where the motor and gearbox are attached to frame portions, and each have a plurality of potential rotational orientations defined a plurality of universal attachment holes. In various embodiments, the spool frame is attachable to the vehicle in at least two orientations including a horizontal orientation where the plurality of mounting holes are approximately horizontal relative to the earth, and a vertical mounting orientation where the plurality of mounting holes are approximately vertical relative to the earth.

A system includes two or more lifting devices attached to a structure each lifting device having a drum rotated by a motor to draw in or let out a line from the drum. The drum includes a groove formed in an outer surface thereof to accommodate the line. In certain embodiments, each of the lifting devices are quickly and easily detachable from the structure by way of a flange and mounting bracket. The flange and mounting bracket have holes which are coaxially aligned. A pin or other fastener is used to join the flange and mounting bracket together. Two or more lifting devices may be connected to and moved along a mounting bracket.

A cord protector is combined with a cord to protect the cord. An outermost end head of the cord would revolve and is fixedly connected to the cord through a collar. The cord protector is assembled by a first protection seat and a second protection seat. The first protection seat and the second protection seat are made of flexible material resisting impact. Openings at the bottom of the first protection seat and the second protection seat co-clamp the cord. A top portion of the first protection seat is divided into two through grooves by a cross bar. Two side cord bodies of a revolving combination place of the cord respectively enter the two through grooves of the first protection seat and are joined by joining members. With the composition, it prevents collision between combined rigid components to protect the combined rigid components and operating users, thereby increasing use safety.

A cord protector is combined with a cord to protect the cord. An outermost end head of the cord would revolve and is fixedly connected to the cord through a collar. The cord protector is assembled by a first protection seat and a second protection seat. The first protection seat and the second protection seat are made of flexible material resisting impact. Openings at the bottom of the first protection seat and the second protection seat co-clamp the cord. A top portion of the first protection seat is divided into two through grooves by a cross bar. Two side cord bodies of a revolving combination place of the cord respectively enter the two through grooves of the first protection seat and are joined by joining members. With the composition, it prevents collision between combined rigid components to protect the combined rigid components and operating users, thereby increasing use safety.

A method for mounting or dismounting components of a wind turbine is provided. The mounting or dismounting is accomplished by fastening at least one retaining rope or guide rope to a component to be mounted by fastening the retaining rope or the guide rope to a rope winch unit and by raising or lowering the component to be mounted or to be dismounted by means of a crane. The component to be mounted or to be dismounted is held or guided by means of the retaining rope or guide rope. The rope winch unit comprises a base, a pivot arm and a retaining unit. The pivot arm is pivot-ably coupled to the base at its first end. A rope winch for receiving the retaining rope or guide rope is provided at its second free end. The retaining unit is pivotably coupled to the pivot arm. The base comprises a plurality of latching units for receiving a first end of the retaining unit.

Azimuth adjustable tilt-towers may be provided by a variety of systems, processes, and techniques. In certain embodiments, a tilt tower may include a tilt tube having a near end and a removed end and a pivot about which the removed end of the tilt tube pivots from an upright orientation to a ground level orientation. The tower may also include an elongated mounting tube and a thrust bearing. The mounting tube may extend through and protrude from the ends of the tilt tube and have a near end and a removed end. The thrust bearing may be located near the removed end of the tilt tube and configured to axially support the mounting tube while allowing it to rotate such that the mounting tube may be rotated about its longitudinal axis by access to the near end while the removed end of the tilt tube is in the upright position.

A pneumatic and manual clutch of a power winch provides an option of controlling the clutch by a manual or pneumatic method. The pneumatic control method just needs to connect a pump connector of an air pump to a pneumatic connector of the clutch properly to start or stop the air pump even when a user is standing at a position far from the power winch and the clutch can be turned on and off by starting or stopping the air pump. Either a cable or wireless remote control can be used to start or stop the air pump, to provide a very convenient operation.

A mute hand winch includes a supporting system, a drive system and a braking system. The drive system includes a drive shaft, a capstan assembly and a first gear. Both the drive shaft and the capstan assembly are disposed at the base, the first gear is in threaded connection with the drive shaft, and the first gear is engaged with the capstan assembly. The braking system includes a second gear and a third gear. The second gear is sleeved on the drive shaft and is located at one side of the first gear. There is a gap between the first gear and the second gear. The first gear and the second gear are selectively attached and locked tightly to prevent the first gear and the capstan assembly from rotating. The third gear is fixed at the base, and the third gear has an unilateral bearing.

A mute hand winch includes a supporting system, a drive system and a braking system. The drive system includes a drive shaft, a capstan assembly and a first gear. Both the drive shaft and the capstan assembly are disposed at the base, the first gear is in threaded connection with the drive shaft, and the first gear is engaged with the capstan assembly. The braking system includes a second gear and a third gear. The second gear is sleeved on the drive shaft and is located at one side of the first gear. There is a gap between the first gear and the second gear. The first gear and the second gear are selectively attached and locked tightly to prevent the first gear and the capstan assembly from rotating. The third gear is fixed at the base, and the third gear has an unilateral bearing.