Disclosed is a draw-works and a method of operation. The draw-works includes a first drum configured to store and reel in an elongated hoisting member, such as a hoisting cable, a second drum configured to store and reel in the elongated hoisting member, and a rotation device configured to rotate the first and second drums, wherein at least one of the drums is selectively connectable to and disconnectable from the rotation device.

Disclosed is a draw-works and a method of operation. The draw-works includes a first drum configured to store and reel in an elongated hoisting member, such as a hoisting cable, a second drum configured to store and reel in the elongated hoisting member, and a rotation device configured to rotate the first and second drums, wherein at least one of the drums is selectively connectable to and disconnectable from the rotation device.

A system for transferring objects into a device inside a controlled environment includes a winch, tool and carousel. The winch includes a drum, and wire arrangement configured to be reversibly wound onto the drum by a first drive. The tool is suspended below a distal end of the wire arrangement and configured to suspend an object. Both the tool and the object are sized to fit inside a device located below the winch. The carousel is connected to a second drive configured to rotate the carousel around a vertical axis, and includes a storage space centered at a first horizontal angle and a pass-through opening at a different second horizontal angle. The pass-through opening being large enough to pass the tool and the object as the wire arrangement is unwound from the drum thereby lowering the tool and object inside the device.

A system to perform vine removal includes a winch. The winch includes a mount configured to secure the winch to a stationary object. A drum is connected to the mount and configured to rotate bi-directionally. A cable is mounted to the drum such that rotation of the drum in a first direction releases the cable from the drum and rotation of the drum in a second direction spools the cable onto the drum. A securing implement is attached to an end of the cable. The securing implement is configured to attach to one or more vines such that operation of the drum in the second direction pulls the one or move vines toward the winch.

Provided is a load-adaptive hoisting mechanism, including a bracket and roofs, wherein the roofs are arranged above the bracket, upright columns are arranged between the bracket and the roofs, through holes corresponding to the upright columns are formed in the roofs, the upright columns are arranged in the through holes, and the lower ends of the upright columns are connected with the bracket; springs sleeve the upright columns between the bracket and the roofs; roof pulleys arranged on the side surfaces of the roofs, bracket pulleys arranged on the side surfaces of the bracket, and the side surfaces of the roofs corresponding to the side surfaces of the bracket; a truncated conical roller arranged in the center above the bracket.

Provided is a load-adaptive hoisting mechanism, including a bracket and roofs, wherein the roofs are arranged above the bracket, upright columns are arranged between the bracket and the roofs, through holes corresponding to the upright columns are formed in the roofs, the upright columns are arranged in the through holes, and the lower ends of the upright columns are connected with the bracket; springs sleeve the upright columns between the bracket and the roofs; roof pulleys arranged on the side surfaces of the roofs, bracket pulleys arranged on the side surfaces of the bracket, and the side surfaces of the roofs corresponding to the side surfaces of the bracket; a truncated conical roller arranged in the center above the bracket.

A drilling apparatus is provided. The drilling apparatus according to one aspect of the present invention comprises: first and second moving modules; first to third drawworks for vertically moving the first and second moving modules; a wire for successively connecting the first drawwork, the first moving module, the second drawwork, the second moving module and the third drawwork; a first fixing drum positioned between the first drawwork and the first moving module so as to support the wire; and a second fixing drum positioned between the second moving module and the third drawwork so as to support the wire.

A drilling apparatus is provided. The drilling apparatus according to one aspect of the present invention comprises: first and second moving modules; first to third drawworks for vertically moving the first and second moving modules; a wire for successively connecting the first drawwork, the first moving module, the second drawwork, the second moving module and the third drawwork; a first fixing drum positioned between the first drawwork and the first moving module so as to support the wire; and a second fixing drum positioned between the second moving module and the third drawwork so as to support the wire.

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.