Method for mounting or dismounting components of a wind turbine and rope winch unit

A method for mounting or dismounting a component of a wind turbine, the method comprising:

• fastening a retaining rope or guide rope on the component to be mounted or dismounted;
• fastening the retaining rope or the guide rope to a rope winch unit;
• and
• raising or lowering the component to be mounted or to be dismounted by a crane, wherein the component to be mounted or to be dismounted is held or guided by the retaining rope or the guide rope,
• wherein the rope winch unit comprises a base unit, a pivot arm and a retaining unit, wherein the pivot arm is coupled pivotably to the base unit and has a free end, and at the free end has a rope winch for receiving the retaining rope or the guide rope,
• wherein the retaining unit is coupled pivotably to the pivot arm,
• wherein the base unit comprises a plurality of latching units for receiving a first end of the retaining unit,
• wherein the pivot arm comprises a first portion that is pivotably coupled to the base unit, a second portion to which the rope winch is coupled, and a third portion between the first and second portions,
• wherein an angle between an underside of the first and third portions is less than 180° and greater than 90°, and
• wherein an angle between an underside of the second portion and the underside of the third portion is greater than 180°.

A method of using a rope winch unit for mounting or dismounting a component of a wind turbine,

• wherein the rope winch unit comprises a base, a pivot arm, and a retaining unit,
• wherein the pivot arm has a first end pivotably coupled to the base and a second end, a rope winch at the second end and configured for receiving the retaining rope or the guide rope,
• wherein the retaining unit is pivotably coupled to the pivot arm,
• wherein the pivot arm comprises a first portion that is pivotably coupled to the base, a second portion to which the rope winch unit is coupled, and a third portion between the first and second portions,
• wherein an angle between an underside of the first and third portions is less than 180° and greater than 90°, and
• wherein an angle between an underside of the second portion and the underside of the third portion is greater than 180°, and
• wherein the base comprises a plurality of latching units for receiving a first end of the retaining unit, the method of using comprising:
• fastening a first end of a retaining or guide rope to the component to be mounted or dismounted;
• fastening a second end of the retaining or guide rope to the rope winch;
• and
• raising or lowering the component to be mounted or to be dismounted by a crane, wherein the component to be mounted or to be dismounted is held or guided by the retaining or guide rope.