초록

The present invention provides a structure comprising a blade attachment, a blade structure, an integrated driving shaft/generator for a wind system such as a vertical axis windmill, and a self erecting structure for such a wind system, together with an erecting method thereof.

대표청구항 ▼

1. A wind system of the type having a rotating shaft perpendicular to the ground, comprising:a plurality of blades positioned in a pre-strained rigid configuration as the wind system is at rest;a top set of horizontal tensioned wing-beams, said top set of horizontal tensioned wing-beams having a tri

1. A wind system of the type having a rotating shaft perpendicular to the ground, comprising:a plurality of blades positioned in a pre-strained rigid configuration as the wind system is at rest;a top set of horizontal tensioned wing-beams, said top set of horizontal tensioned wing-beams having a triangular configuration and connecting the blades to a top end of the rotating shaft; anda bottom set of horizontal tensioned wing-beams, said bottom set of horizontal tensioned wing-beams having a triangular configuration and connecting the blades to a bottom end of the rotating shaft;wherein said blades and sets of horizontal tensioned wing-beams form a flexible blade attachment assembly, which tends to get flattened under a centrifugal force and adopts a troposkein shape at a target speed of rotation, said troposkein shape being then maintained by the sets of horizontal tensioned wing-beams.2. The wind system according to claim 1, further comprising a top set of securing elements having a triangular configuration and a bottom set of securing elements having a triangular configuration respectively securing the blades to the rotating shaft.3. The wind system according to claim 1, wherein each one of said plurality of blades comprises a stress-absorbing member inserted into a sheathing.4. The wind system according to claim 3, wherein said sheathing is aerodynamically profiled.5. The wind system according to claim 3, said stress-absorbing member is a leaf spring.6. The wind system according to claim 3, said sheathing is directly molding onto said stress-absorbing member.7. The wind system according to claim 3, said sheathing is made of a material that can be easily attached around said stress-absorbing member.8. The wind system according to claim 3, wherein said sheathing is made of a material selected in the group comprising rubber and fiberglass.9. The wind system according to claim 3, wherein said stress-absorbing member is pre-shaped to a generally troposkein geometry.10. The wind system according to claim 9, further comprising a generator assembly to produce electricity.11. The wind system according to claim 10, wherein said generator assembly comprises a generator connected to a rotation increasing device, said rotation increasing device having a driven shaft mounted to the rotating shaft of the wind system.12. The wind system according to claim 11, wherein said rotation increasing device is a cycloid speed-increasing gear.13. The wind system according to claim 12, further comprising an enclosure provided with a base and a top, and enclosing said generator.14. The wind system according to claim 10, wherein said generator assembly comprises a stator and a rotating casing supported by a stationary base.15. The wind system according to claim 14, wherein said rotating casing is connected to the rotating shaft by securing elements.16. The wind system according to claim 14, wherein said rotating casing supports a cover.17. The wind system according to claim 14, wherein said rotating shaft is shorter than at least one of the blades and the wing beams.18. The wind system according to claim 1, wherein said wind system is a vertical axis windmill.19. The wind system according to claim 1, provided with a structure comprising a lower portion; a middle portion, which can telescope in said lower portion; and a top portion holding the rotating shaft, which can telescope in said middle portion.20. The wind system according to claim 19, wherein said structure further comprises removable hydraulic jacks, each provided with an erecting cable having a mobile end connected to a base of a portion to be erected, and a stationary end attached to a base of a corresponding jack.21. A blade attachment structure for a windmill, comprising blades connected to a rotating shaft by wing-beams arranged in sets of horizontal wing-beams under tension, said sets of horizontal wing-beams under tension having a triangular configuration and holding a spatial distribution of the blades, and by sets of securing elements, said sets of securing elements having a triangular configuration and being mounted respectively to each sets of horizontal wing-beams, wherein said blades are positioned in a pre-strained rigid configuration as the windmill is at rest.22. The blade attachment structure according to claim 21, wherein said sets of horizontal wing-beams comprise a first set of honzontal wing-beams and a second set of horizontal wing-beams and said sets of securing elements comprise a first set of securing elements securing the first set of horizontal wing-beams on top of the blade attachment structure and a second set of securing elements securing the second set of horizontal wing-beams at the bottom of the blade attachment structure.23. The blade attachment structure according to claim 21, comprising three (3) blades.24. The blade attachment structure according to claim 21, wherein said rotating shaft is shorter than at least one of the blades and the wing beams25. The blade attachment structure according to claim 21, having at all times a troposkein geometry.26. A blade attachment structure for a windmill comprising blades mounted to a driving shaft by means of tensioning means and positioned in a pre-strained rigid configuration as the windmill is at rest, said blades being connected in a spatial distribution to at least one set of horizontal wing-beams under tension, said at least one set of horizontal wing-beams having a triangular configuration by said at least one set of securing elements, said at least one set of securing elements having a triangular configuration, in such a way as to form a flexible assembly, which tends to get flattened under a centrifugal force and adopts a troposkein shape at a target speed of rotation, said troposkein shape being maintained by the tensioning means.27. A generator assembly for the windmill according to claim 1, comprising a generator connected to a rotation-increasing device, said rotation-increasing device having a driven shaft mounted to a rotating shaft of the windmill.28. The generator assembly according to claim 27 wherein said rotation increasing device is a cycloid speed-increasing gear.29. The generator assembly according to claim 27, further comprising an enclosure provided with a base and a top, for enclosing said generator.30. A generator assembly for the windmill according to claim 1, comprising a rotating casing supported by a stationary base through steady bearings, brake shoes, and a stator, wherein said rotating casing is connected to a rotating shaft of the windmill.31. A self erecting structure for the windmill according to claim 1, comprising a lower portion, a middle portion able to telescope in said lower portion, and a top portion in the form of a stationary enclosure holding a rotating shaft of the windmill and able to telescope in said middle portion.32. The self erecting structure according to claim 31, wherein a first, a second and a third hydraulic jack, each having an erecting cable with a mobile end connected to a base of the windmill to be erected, and a stationary end attached to a base of the first, second and a third hydraulic jack respectively.33. The self erecting structure according to claim 31, wherein said erecting cable of the first hydraulic jack passes through a pulley of said first hydraulic jack and has a stationary end attached to the base of said first hydraulic jack; said erecting cable of the second hydraulic jack passes through a pulley of said second hydraulic jack and has a stationary end attached to the base of said second hydraulic jack; said erecting cable of the third hydraulic jack passes through a pulley of said third hydraulic jack and has a stationary end attached to the base said third hydraulic jack.34. The self erecting structure according to claim 31, wherein a first and a second removable hydraulic jacks are mounted by a respective base thereof on a base of said lower portion, and a third removable hydraulic jack is mounted on a base of said middle portion, said first, second and third removable hydraulic jacks being each provided with a piston rod, each piston rod being provided with a pulley at a distal end thereof respectively.35. A method for erecting the windmill according to claim 1, said windmill being made of a plurality of telescoping portions, from a lying position comprising successively lifting the telescoping portions to a fully extended position thereof.