A drive unit for at least one traction means, especially in stage machinery, with a winding drum comprising at least one take-up region, on (each of) which a traction means is received which can be wound up or unwound, characterized in that axially adjacent to the take-up region there is a cylindrical drive region disposed on the winding drum, on which is received a belt-shaped drive means that can be wound up or unwound and which can be wound up onto a drivable drive drum, generating a drive torque acting on the winding drum, or can be unwound from the drive drum, releasing the winding drum.

A drive unit for at least one traction means, especially in stage machinery, with a winding drum comprising at least one take-up region, on (each of) which a traction means is received which can be wound up or unwound, characterized in that axially adjacent to the take-up region there is a cylindrical drive region disposed on the winding drum, on which is received a belt-shaped drive means that can be wound up or unwound and which can be wound up onto a drivable drive drum, generating a drive torque acting on the winding drum, or can be unwound from the drive drum, releasing the winding drum.

A large-scale tool hoisting device for offshore electric power construction is provided. A steel cable retracted to winches is dried using the heat in the operating cabin, thereby preventing the steel cable from being in a wet state for a long time and being corroded by seawater. For different loads at the terminal of the steel cable, a transmission ratio between a drive wheel and a control wheel is changed through the sliding of the drive wheel. Without changing the rotational speed of the drive motor, the moving speed of the steel cable is effectively and correspondingly improved by reducing the pulling force of the steel cable, or a large pulling force can be provided for the steel cable by reducing the moving speed of the steel cable. The transmission ratio can be changed in the hoisting process.

A large-scale tool hoisting device for offshore electric power construction is provided. A steel cable retracted to winches is dried using the heat in the operating cabin, thereby preventing the steel cable from being in a wet state for a long time and being corroded by seawater. For different loads at the terminal of the steel cable, a transmission ratio between a drive wheel and a control wheel is changed through the sliding of the drive wheel. Without changing the rotational speed of the drive motor, the moving speed of the steel cable is effectively and correspondingly improved by reducing the pulling force of the steel cable, or a large pulling force can be provided for the steel cable by reducing the moving speed of the steel cable. The transmission ratio can be changed in the hoisting process.

A modular lift system may include, but is not limited to: one or more lift segments each including: a lift-truss structure; and a drive shaft having at least one end-coupler, at least one lift assembly coupled to the lift-truss structure, and at least one drive segment including: a drive-truss structure; a drive motor coupled to the drive-truss structure; and a drive-coupler attached to the drive motor and configured to engage the end-coupler of the drive shaft.

A modular lift system may include, but is not limited to: one or more lift segments each including: a lift-truss structure; and a drive shaft having at least one end-coupler, at least one lift assembly coupled to the lift-truss structure, and at least one drive segment including: a drive-truss structure; a drive motor coupled to the drive-truss structure; and a drive-coupler attached to the drive motor and configured to engage the end-coupler of the drive shaft.

A drive transmission device includes a reference shaft positioned on a reference axis, a first target shaft and a second target shaft positioned on a target axis, a first rotator attached to the first target shaft, a second rotator attached to the second target shaft, a first transmission member wound around the first rotator, a second transmission member wound around the second rotator, and a shaft coupling. The first target shaft and the second target shaft are arranged with a gap in the axial direction, and the first rotator and the second rotator are positioned on the target axis to be arranged side by side in the axial direction. The shaft coupling is connected to both the first rotator and the second rotator.

A drive transmission device includes a reference shaft positioned on a reference axis, a first target shaft and a second target shaft positioned on a target axis, a first rotator attached to the first target shaft, a second rotator attached to the second target shaft, a first transmission member wound around the first rotator, a second transmission member wound around the second rotator, and a shaft coupling. The first target shaft and the second target shaft are arranged with a gap in the axial direction, and the first rotator and the second rotator are positioned on the target axis to be arranged side by side in the axial direction. The shaft coupling is connected to both the first rotator and the second rotator.

A modular lift system may include: a lift segment including: a lift-truss structure; a drive shaft; a lift assembly coupled to the lift-truss structure, the lift assembly including: a lift drum operably coupled to and configured to co-rotate with the drive shaft; and a lift line configured to wrap around the lift drum as it co-rotates with the drive shaft, corner lift segment including: a corner truss structure; a corner drive shaft; corner lift assembly coupled to the corner truss structure, the corner lift assembly including: a corner lift drum operably coupled to and configured to co-rotate with the corner drive shaft; and a corner lift line configured to wrap around the corner lift drum, one or more bracket portions operably couplable to the lift segment and corner lift segment and configured to retain the lift segment and corner lift segment at an angle relative to one another.

A modular lift system may include: a lift segment including: a lift-truss structure; a drive shaft; a lift assembly coupled to the lift-truss structure, the lift assembly including: a lift drum operably coupled to and configured to co-rotate with the drive shaft; and a lift line configured to wrap around the lift drum as it co-rotates with the drive shaft, corner lift segment including: a corner truss structure; a corner drive shaft; corner lift assembly coupled to the corner truss structure, the corner lift assembly including: a corner lift drum operably coupled to and configured to co-rotate with the corner drive shaft; and a corner lift line configured to wrap around the corner lift drum, one or more bracket portions operably couplable to the lift segment and corner lift segment and configured to retain the lift segment and corner lift segment at an angle relative to one another.