A method for assembling a modular foundation of a wind turbine having a base and a plurality of foundation sections includes positioning the base of the foundation on a support surface, arranging a plurality of tensioning elements so as to extend from the base to a second location spaced from the base, and stacking a plurality of foundation sections on the base by guiding the foundation sections from the second location toward the base using the tensioning elements. A modular wind turbine foundation includes a base positioned on the seabed; a plurality of tensioning elements extending from the base to a location adjacent the surface of the water; and a plurality of serially stacked foundation segments on top of the base.

The present disclosure relates to systems and methods for providing self-standing, self-supporting, rapid-deployable (S4RD) towers for communications and similar applications, and in particular to ballast base systems that enable the self-standing, self-supporting, rapid-deployable features while eliminating the need for a permanent foundation for the tower. Novel and inventive tower designs, wherein a user may climb through an interior volume of the tower while using the tower structure as both ladder and man cage, are also disclosed.

A device configured to support an object above the ground. The device includes a first end and an opposite second end, an axis being defined between the first end and the second end. A body surrounds the axis and extends from the first end to the second end. A mount section of the body is closer to the first end than to the second end. The mount section has a first cross-section and is configured to be coupled to the object. The first cross-section has a circular shape. A main section of the body is located between the mount section and the second end, which has a main cross-section having a hexagonal shape. An indentation in the body is closer to the second end than to the first end. The device is configured to be installed in the ground such that the indentation is below the ground.

The present invention relates to a wind turbine with a concrete tower wherein the tower comprises a plurality of sections formed by segments a platform system comprising a plurality of platforms, wherein the platform system is configured to allow access to junction areas between sections wherefrom optionally, the execution of joints between adjacent sections may be carried out, the platforms situated inside the tower once erected being detachable, stackable and transportable.

A system for assembling/disassembling a windmill in a supporting tower, comprising a intermediate fixing structure with hydraulic supports for attachment, by pressure, to the tower; a main structure capable of being attached to the tower at various working positions by absorbing the diametral differences of the latter; two pivoting arms hinged to the main structure and capable of being positioned by hydraulic actuators; a secondary structure for hoisting tower segments, equipped with four cranes of a minor size for handling the main structure and the pivoting arms during hoisting/descent, and a counterbalancing group adjustable in height by means of capstans. The main structure and the intermediate structure include a detachable side for their withdrawal and separation from the tower during disassembly.

The invention relates to a method of erecting a tower such as a wind turbine tower tethered by a number of cables where each of the cables extend between the tower and an anchoring element on an anchor block. The method comprises attaching at least some of the tethering cables to the tower, detachably fastening a motorized winch on an anchor block and connecting the wire of the winch to the end of a tethering cable. The winch is then operated to wind up the wire of the winch pulling the cable end towards the anchor block and into position for fastening the cable end to the anchoring element, where the cable end is then fastened to the anchoring element while held in position by the winch. The invention further relates to the use of a motorized winch to connect a cable to an anchor block when erecting a tower tethered by a number of cables as mentioned above.

The invention relates to a method of erecting a tower such as a wind turbine tower tethered by a number of cables where each of the cables extend between the tower and an anchoring element on an anchor block. The method comprises attaching at least some of the tethering cables to the tower, detachably fastening a motorized winch on an anchor block and connecting the wire of the winch to the end of a tethering cable. The winch is then operated to wind up the wire of the winch pulling the cable end towards the anchor block and into position for fastening the cable end to the anchoring element, where the cable end is then fastened to the anchoring element while held in position by the winch. The invention further relates to the use of a motorized winch to connect a cable to an anchor block when erecting a tower tethered by a number of cables as mentioned above.

The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set manner. The section chains are placed on a take up mechanism in an operable position and then raised utilizing a motor. As the section chains are raised, they are guided by a guide tower, rollers, shims, and gear racks into a position whereby hooks from adjacent sections of the section chains form coupled engagements. The coupled engagement of the hooks of the sections of each adjacent section chains thereby form the column.

The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set manner. The section chains are placed on a take up mechanism in an operable position and then raised utilizing a motor. As the section chains are raised, they are guided by a guide tower, rollers, shims, and gear racks into a position whereby hooks from adjacent sections of the section chains form coupled engagements. The coupled engagement of the hooks of the sections of each adjacent section chains thereby form the column.

A transportable drilling rig having a self-elevating drill floor includes a base structure comprising multiple base towers that can be transported to a wellsite and positioned around an intended wellbore location. A horizontal base frame is installed between lower regions of the towers to form a stable rig base structure, and a drill floor can then be constructed over the base frame and between the base towers. A suitable rig mast can then be erected on the drill floor. Floor-lifting cables are anchored to upper regions of the base towers and disposable around corresponding sheave assemblies associated with the drill floor. The free ends of the floor-lifting cables can be engaged by the traveling block in the rig mast, whereupon the rig's drawworks can be actuated to elevate the drill floor and mast as required and then locked to the base towers.