A modular rig system assembled without use of a crane includes a platform and a mast. The platform has pin retaining structure. The mast is separable from the platform and has a transport foundation, a tower, an alignment actuator, a pin, and a piston arm. The tower has pin retaining structure and is movable relative to the transport foundation between transport and use configurations. The alignment actuator is operably coupled to the transport foundation to adjust positioning of the tower while the tower is at the transport configuration such that the platform pin retaining structure and the tower pin retaining structure are aligned. The pin selectively passes through the platform pin retaining structure and the tower pin retaining structure to couple the platform to the tower, and the piston arm is pivotably coupled to the transport foundation and the tower for moving the tower between the transport and use configurations.

A tilt tower (10) is provided in which a tilt tube (14) rotates relative to a base tube (12) about an axle (16). The axle (16) is provided with a passageway therethrough, such that cables run between the base tube (12) and tilt tube (14) through the passageway.

A method of assembling a wind turbine tower by stacking a plurality of annular sections made of concrete above each other. The main connections are performed between two adjacent annular sections, for withstanding loads induced by a rotor. The auxiliary connections are performed between two adjacent annular sections, for withstanding loads induced by an earthquake and loads induced by the wind on the wind turbine in absence of the rotor, but not necessarily loads induced by the rotor. The method is characterized in that the auxiliary connections between two adjacent annular sections are performed prior to stacking the following annular section.

A tower for a wind turbine extending axially along a longitudinal axis of the wind turbine includes a rail attached to an external surface of the tower, the rail providing a guide to which a service trolley is attachable in order to be movable along the rail. The tower includes: a plurality of axially adjacent tower segments, each tower segment extending axially between two axial ends, a respective flange being provided at one or both of the axial ends for connecting the respective tower segment to another tower segment. The rail is provided at the flange.

An enclosure structure, and an aerodynamic configuration adjuster arranged on an outer surface of same are provided. The aerodynamic configuration adjuster is of a grid structure capable of surrounding the enclosure structure, and the grid structure comprises a plurality of grid cells, at least some of grid cells have bevel edges, and the attack angle of a fluid is changed when the fluid passes over the bevel edges. The aerodynamic configuration adjuster changes the aerodynamic configuration of the fluid, and thus the resistance coefficient becomes smaller such that a pressure differential between the pressures at a incident flow surface and a back surface of the enclosure structure is reduced, thereby reducing a forward resistance; and in addition, due to a smaller resistance coefficient, the amplitude of a transverse vortex-induced resonance can also be reduced, thereby reducing vibration.

Equipment for burying poles into the ground. The equipment includes a base frame associable with a machine for the movement of the equipment; a hammering assembly associated movable with the base frame and adapted to bury a pole to allow its at least partial penetration into the ground at a burying position; and a gripping and positioning assembly of the pole, associated with the base frame and adapted to grasp the pole and to position it under the hammering assembly at the burying position.

A manufacturing method for producing a tower segment, a tower portion and a tower section for a tower, in particular for a tower of a wind power installation. A tower segment, a tower portion and a tower section for a tower, in particular for a tower of a wind power installation, to a tower, and to a wind power installation. The manufacturing method comprises: providing a plate that extends in the longitudinal direction and, orthogonally thereto, in a circumferential direction, wherein the extent in the longitudinal direction is larger than the extent in the circumferential direction; and rolling the plate for incorporating a thickness profile along a longitudinal direction of the plate, wherein the rolling comprises: incorporating a first constant portion having a substantially constant first thickness which differs from a substantially constant second thickness of a second constant portion that in the longitudinal direction is disposed so as to be substantially parallel to said first constant portion; and bending the plate in the circumferential direction.

A tower section for a wind turbine, comprising a tensioning arrangement having at least one tensioning device attached to three or more attachment points associated with the tower section, wherein those attachment points are located proximate to an end of the tower section. The or each tensioning device is under tension and provides radial stiffness to the tower section. The invention also relates to a method for assembling a tower for a wind turbine, the method comprising: providing a tower section; attaching a tensioning arrangement including at least one tensioning device between three or more attachment points associated with the tower section and located proximate to an end thereof; and applying tension to the at least one tensioning device so as to provide radial stiffness to the

An assembly crossbeam for placing on a tower top, in particular on a tower top of a tower of a wind turbine, and to a method for drawing in cables, in particular tendons, along a tower, in particular a tower of a wind turbine. The assembly crossbeam comprises a main support having a first and second end, and two auxiliary supports, each having a first and second end, wherein the two auxiliary supports are positioned on either side of the main support with each of their respective first ends at the centre of the main support, wherein on the main support there is a first trolley which can move along at least a first section of the main support, and wherein on said main support there is a second trolley which can move along at least a second section of the main support.

Provided is a modular tool for installing a platform into a tower section of a wind turbine tower, comprising a first body element, a second body element, wherein each body element has a first base plate, on which the tower section rests in use of the modular tool, and a second base plate, which rests on a foundation in use of the modular tool, wherein the base plates are spaced apart from each other and are arranged parallel to each other, and at least one connecting beam that detachable connects the body elements to each other and that defines a width of a gap between the body elements. Due to the fact that the at least one connecting beam detachable connects the body elements to each other, the modular tool can be easily adapted to different tower diameters by replacing the at least one connecting beam.