The invention concerns a support structure for electric energy eolian generators of various kind, of modular type, which can be installed and applied in the ground into limited areas for ensuring an efficient and balanced support to such generators, such as to withstand with safety to the different atmospheric conditions.

There are known electric energy eolian generators of various kind, made with relatively limited sizes, which are installed near the inhabited environments and are arranged for operating also under conditions of strong wind, in order to generate electric energy for the use in the same inhabited residences, or also for being used by other users.

These eolian generators, naturally, may be realized also with greater sizes for being installed, alone or together with other analogous eolian generators, into places far-away from the inhabited areas in order to generate electric energy in a sufficient quantity for supplying a high numbers of consumers. These eolian generators are normally constituted by a set of rotating vanes actuated by the wind thrust and made of metallic materials or composite materials with high mechanical strength, which have structural parts made preferably of carbon, such rotating vanes being secured to and supported on the upper part of a support structure applied and supported on the ground and are mechanically connected, through suitable transmission members, with one or more electric energy generators also supported on the upper part of the support structure, in a manner that these generators are actuated in rotation by the rotation of the vanes produced by the wind thrust, so as to generate the electric energy, which is distributed directly toward the relative user or toward other users.

In these types of eolian generators, the rotating vanes are normally secured at their end one portion to a rigid rotating structure, pivoted and supported oft the upper part of the support structure, and the same vanes are also shaped with a helical shape, in a manner that the wind impacting the vanes determines their rotation with the highest possible thrust, so as to achieve an optimum energetic efficiency under the different wind conditions.

In turn, the support structure of these eolian generators is normally constituted by at least a sturdy vertical and lengthened pole made of metal, concrete or other suitable material withstanding high mechanical stresses, and the lower end portion of such pole is secured into at least a foundation made of reinforced concrete generally with sizes sufficient to balance the overturning moment, and with considerable sizes, which is arranged and inserted into diggings executed in the ground, for a depth sufficient to support the pole in a stable and efficient manner, and the pole arranged in the vertical position is also secured to a set of metallic cables having high material strength, adapted to ensure an efficient and stable support of both the pole and the assembly formed by the vanes, the rotating rigid structure and the electric generator, and the upper end portions of such cables are opportunely fixed to the pole for the entire circumference thereof, whereas the lower end portions of the same cables are anchored adequately to the ground. However, still operating in a satisfying manner, the so realized eolian generators require some support structures which are very cumbersome and involve the use of many mechanically resistant materials, which therefore are very expensive, which for the installations of these structures require the presence of burdensome lifting equipments such as hydraulic piston systems, oleo-dynamic systems or the like, and the carrying out of various and complicated lifting operations of the support pole and the anchorage cables. The object of the present invention is to provide for a support structure for electric energy eolian generators, with such constructive characteristics as to avoid the above-mentioned drawbacks connected with the support structures used at the present time, which be made with a modular construction and may be installable and applicable in the ground within limited areas for ensuring an efficient and balanced support for such generators, that allow to these latter to withstand effectively to the different atmospheric conditions (wind, rain, snow, etc.).

The support structure according to this invention is realized with the constructive characteristics substantially described, with particular reference to the attached patent claims.

The invention will be better understood from the following description, that is given by way of non- limiting example and with reference to the accompanying drawings, in which :

- Figure 1 shows a perspective front view of a support structure according to the present invention, in a first embodiment thereof, which is installed in an upright position and supports at its upper part an electric energy eolian generator, with the relative rotating vanes actuated by the wind ;

- Figure 2 shows a perspective front view of a portion of a component part of the support structure of Figure 1 ;

- Figure 3 shows a perspective front view of the portion of the component part of Figure 2, assembled with an additional component part of the structure ;

- Figure 4 shows a perspective side and enlarged view of the component parts assembled to each other of the Figures 2 and 3 ;

- Figure 5 shows a perspective front view of a set of portions of the component parts of the Figure 2, assembled to each other in the lower area of the support structure, and shifted in an operative position thereof ;

- Figure 6 shows a perspective side view of the portions of the component parts of Figure 5, shifted in another operative position thereof ;

- Figure 7 shows a perspective front view of some portions of the component parts assembled to each other of the support structure according to the invention ;

- Figure 8 shows a front view of the component parts of Figure 7 and of additional component parts assembled with these latter, in an assembling position of the present support structure ;

- Figure 9 shows a front view of the component parts of Figure 7 assembled to each other, in a subsequent assembling position of the present support structure ;

- Figure 10 shows a perspective front view of all the component parts assembled to each other of the support structure, at the end of the assembling of the same, and of all the component parts of the eolian generator supported by such support structure ;

- Figure 11 shows a plan view of all component parts of the support structure and the eolian generator of Figure 10 ;

- Figure 12 shows a perspective front view of the support structure according to the invention, in a second embodiment thereof, which is installed in an upright position thereof and supports at its upper part an electric energy eolian generator, with the relative rotating vanes actuated by the wind ;

- Figure 13 shows a front view with another angle of the assembly support structure - eolian generator of the Figure 12 ;

- Figure 14 shows a perspective front view of a component part of the support structure of the Figure 12, assembled with other component parts of the same structure, of which only a portion is shown ;

- Figure 15 shows a perspective front view of the inner structure of the component part of Figure 14, before this latter be formed ;

- Figure 16 shows a perspective front view of two component parts of Figure 14, assembled with other component parts of the support structure, of which only a portion is shown ;

- Figure 17 shows a front view of the support structure with the eolian generator of Figure 13, in an assembled position thereof ;

- Figure 18 shows a perspective front and enlarged view of a portion of the support structure of Figure 17, in the same assembled position ;

- Figure 19 shows a perspective front view of the support structure of the Figures 17 and 18, in a subsequently assembled position thereof ;

- Figure 20 shows a perspective front view of a portion of the support structure of the Figure 12, in the upright position thereof ;

- Figure 21 shows a plan view of the support structure in the upright position thereof of the Figures 12 and 20. In the above Figures, it is illustrated a support structure according the present invention, adapted to support electric energy eolian generators of various kind, made with relatively limited sizes, provided for generating electric energy, particularly for being installed near inhabited environments, and preset for operating also under condition of strong wind, in order to generate electric energy for the use into the same environments, or also for the use by other users. These eolian generators, naturally, may be realized also with greater sizes for being installed, alone or together with other analogous eolian generators, at places far-away from the inhabited areas in order to generate electric energy in a sufficient quantity for supplying a high numbers of consumers.

Each eolian generator 5 is substantially constituted as usual by a synchronous electric generator (not shown), formed by a movable circular rotor and by a stationary circular stator (both not shown), which are contained into a stationary and metallic box-like envelope 6, supported as it will be described onto the metallic support structure 7 of the present invention, and into which box-like envelope 6 a metallic rotor 8 is housed and supported, which is rotating with respect to this latter, which rotor is mechanically connected to the electric generator rotor and supports a set of rotating vanes 9, spaced away to each other of the same angular interval along the circumference of the rotor 8, and opportunely profiled, which vanes 9 during the installation of the eolian generator are so oriented as to receive the wind thrust with the highest possible intensity, in such a way that such vanes be actuated in rotation by the wind thrust, thereby determining the rotation of the electric generator rotor and therefore generating the electric energy by electromagnetic induction.

Onto the metallic rotor 8 and onto the upper part of the support structure 7 it is also fixed in an articulated manner the front end portion of at least one rectilinear and lengthened metallic rod 10, at the rear end portion of which a metallic tail 11 is fixed and formed by a shaped plate 12 adapted to be impacted by the wind and to be shifted from time to time in the direction from which the wind arrives, in a manner to determine a correspondent rotation of the rod 10 and the metallic rotor 8, and therefore also of the rotating vanes 9, so as to orient continuously these latter in such a direction as to receive the maximum wind thrust.

By way of a not-limiting example only, an eolian generator of this kind may be constituted by the eolian generator which is described, illustrated and claimed in the patent application for industrial invention n. PN2011 A000075, filed on 18.11.2011 by the same Applicant, to which therefore reference is made for a better comprehension of the constructive and structural characteristics of the same generator. Naturally, the eolian generator supported by the present support structure may be realized also with characteristics which are different than those of the eolian generator described in the above-mentioned patent application, thus without departing from the protection sphere of the present invention.

Now, the support structure 7 according the invention is described and how the same structure is assembled and mounted in an upright position in the relative installation position, and in particular the Figures 1-11 show a first embodiment of this support structure, with its various component parts and the different assembling phases of the same, together with the eolian generator supported by the same structure, whereas in the Figures 12-21 a second embodiment of this support structure is shown, with its various component parts and the different assembling phases of the same, together with the eolian generator supported by the same structure.

Figure 1 illustrates an eolian generator 5 of the type referred to, with the rotating vanes 9 assembled onto the metallic rotor 8, and supported by the same, together with the rod 10 and the tail 11, which rotor 8 in turn is housed and supported into the stationary box-like envelope 6, which is supported onto the upper part of the present metallic support structure 7, in the manner that will be described. This metallic support structure 7 has an extension in the vertical direction, and its component parts are realized and installed to each other as it will be described, and such structure also has a relatively limited height, preferably comprised between about 3 and 20 meters, and is formed by at least a metallic rectilinear lengthened section bar 13 with vertical extent, of tubular shape, or of another suitable geometrical shape, the lower end portion of which is supported by a set of supports 14, 15, 16 and 17, joined in an articulated manner with their respective upper end portions to the vertical section bar 13 and realized as it will be described, as well as distributed uniformly on the ground around the same vertical section bar, and the respective lower end portions of such supports are fixed to correspondent ballast weights, opportunely shaped and anchored in to the ground as it will be described. With this arrangement of the support structure, therefore , the so realized eolian generator 5 is supported on the ground by the vertical section bar 13 always in a balanced condition, thanks to the distribution of the ballasts in an uniformly manner around the vertical section bar 13, and to the masses of such ballasts which are sized for forming counterweights exerting efficient counter-moments against the moments exerted by both the weights of the vertical section bar and the eolian generator 5 supported by it, and by the forces exerted by the wind thrusts against the rotating vanes 9, and by the forces produced by the consequent rotation of such vanes, in a way that this balanced condition be always ensured during the operation of the eolian generator 5, thereby ensuring to the same to operate always in a satisfactory and reliable manner, and preventing any danger of overturning and of non-operation of the same eolian generator. According to the essential characteristic of the invention, all the component parts of the present support structure are formed by a system of rigging stays of nautical type, which is arranged and applied in position for operating as support structure for the eolian generators, which therefore may be installed in position with simple operations and by utilizing lifting equipments of common type, which are different and less complicated and burdensome with respect to the lifting equipments such as hydraulic piston systems, oleo-dynamic systems or the like, which are nowadays used for installing the present support structures for eolian generators of these kinds.

As visible also from Figures 2, 3, 4 and 5, in the illustrated example of the support structure 7 according to the present invention, the four foreseen supports for supporting the vertical metallic section bar 13 are constituted by respective horizontal rectilinear section bars 14, 15, 16 and 17 with the same size, of tubular shape or other suitable geometrical shape, which form some basis struts which are arranged onto a support surface, which may be constituted by the ground or a roof of an inhabited building, and which are distributed in form of spokes around the vertical section bar 13 with the same angular distance, and the end portions converging to each other of such inclined section bars are fixed with a single central plate 18, shaped with an upper flat surface 19, into which two short projected coupling elements 20, 21 are provided, equal and spaced away to each other in the direction of the length of the flat surface 19, for assembling in an articulated manner two additional vertical section bars 22 and 23, having the same length and a tubular shape or another suitable geometrical shape, which vertical section bars are shorter than the vertical section bar 13 and are assembled in an articulated manner onto the plate in positions spaced away to each other, by delimiting a space in which the vertical section bar 13 is placed, without that the lower end portion of this latter comes into contact with the flat plate 18.

In turn, the free end portions of the respective horizontal section bars 14, 15, 16 and 17 are shaped as it will be described, for being articulated with the correspondent ballasts 24, 25, 26 and 27, which are identical to each other and shaped with the same shape and size, in the example they are of parallelepiped shape, but of course they may be shaped with different shapes too, thus without departing from the protection sphere of the present invention.

Each ballast can be realized advantageously as an unique block, as in the case of the ballasts of the Figure 1, or it may be realized with two single blocks identical and joined to each other, as in the case of the ballasts illustrated in the Figures 3, 7-10, wherein however each ballast contains the same weight of ballasting material.

Turning again to the Figures 5 and 6, it is noted that the vertical projected coupling elements 20 and 21 of the central plate 18 are formed by two short flat plates 28 and 29 secured onto the upper flat surface 19 of the same plate and arranged parallel and slightly spaced away to each other in the transversal direction of such plate, thereby delimiting a narrow free space into which a

correspondent additional flat plate 30 and 31 may be inserted, which is secured below the free end portion of the relative rectilinear section bar 22 and 23, and provided with two respective transversal through holes 32 and 33, provided in positions correspondent to those of the relative transversal through holes 34 and 35 with which both the flat plates 28 and 29 are provided. In this manner, once all the ballasts 24, 25, 26 and 27 have been arranged in the relative application positions thereof, with a spokes-conformation around the position in which the vertical section bar 13 will be assembled, the additional flat plates 30 and 31 are articulated with the correspondent flat plates 28 and 29 through a relative short pivot 36 and 37, which is inserted into the relative through holes 32 and 34 of such flat plates, and under this condition the lower end portions of the rectilinear section bars 22 and 23 become articulated with the central flat plate 18 and may be bent in an inclined position with respect to the same in the position of Figure 6, together with the central section bar 13, which condition is required during the first phase of assembling of all the component parts of the present support structure, as it will be described hereinafter.

For displacing the rectilinear section bars 22 and 23 in a vertical and upright position, by displacing also the central section bar 13 in the same position, by performing the subsequent assembling phases which will be described, then it is necessary at first to lift such section bars 22 and 23 together with the central section bar 13, by utilizing the equipments that will be described, and in that case the rotation of the section bars 22 and 23 around their pivots 36 and 37 determines the displacement of all the plates with their through holes 33 and 35 into positions coincident to each other, so that also into these through holes some correspondent pivots (not shown) may be inserted, thereby locking into this vertical and upright position the two rectilinear section bars 22 and 23, together with the vertical central section bar 13 (see Figure 5).

By referring now to Figures 2, 3 and 4, it is noted how each horizontal section bar 14, 15, 16 and 17 is realized with its free end portion opportunely shaped, for being articulated with the relative ballast, each one of which in the present example is constituted as already specified by two single blocks of parallelepiped shape, arranged aligned and joined to each other, which are now marked with the respective reference numerals 24', 24", 25', 25", 26', 26" and 27', 27".

For this aim, each ballast block of this kind is substantially constituted by a metallic electric welded net (not illustrated), with the same shape of the relative block, delimiting an internal cavity that is filled in advance with inert material of various kind, in equal quantity and such to obtain the desired weight of each ballast block. Thereafter, once such internal cavity has been completely filled with this inert material, each ballast block is closed along all its sides by relative metallic (or plastic) closing walls, in the example of Figure 3 formed by a front longitudinal wall 38 and by a rear wall 39, by an upper longitudinal wall 40 and by a lower wall 41, and by an external side wall 42 and by an internal side wall 43, wherein the two internal side walls 43 opposed to each other of two ballast blocks adjacent to each other are joined to each other by a junction piece 44, welded at both these side walls, onto which a metallic articulation element 45 is secured in advance in an overlapped and interposed position, which is shaped as it will be described and provided for receiving the shaped end portion of the relative horizontal rectilinear section bar.

As visible particularly from the Figures 2, 3 and 4, the free end portion of each inclined section bar (in the example constituted by the section bar 16) is shaped with a narrow vertical plate 46, formed by a tail 47 joined with the terminal part of the tubular section bar and that is extended with a slightly tapered head 48, into which there are provided at least two through holes 49 and 50 along the opposed sides of the same head, for allowing the passage of correspondent metallic stays 51 and 52 for supporting the support structure of the eolian generator. Moreover, in the Figure 4 it is noted that the tapered end portion of the head 48 is supported on and fixed to an horizontal plate 53, in turn fixed onto the upper part of the articulation element 45, the lower part of which is shaped as a square-shaped hollow sleeve 54, the longitudinal through opening 55 of which is inserted into and joined on to above-mentioned correspondent junction piece 44.

Obviously, the fixing of the free end portion of each horizontal section bar 14-17 with the articulation element 45 may be performed also in a different manner with respect to that indicated by way of example only, thus without departing from the protection sphere of the present invention. Figures 7-9 now show the different assembling phases of the support structure 7 according to the present invention, for installing an eolian generator 5 in the foreseen installation position, and the Figure 10 shows the eolian generator 5 with the relative installed support structure 7. From such Figures, it is noted that the reciprocal junction of all the component parts of the support structure 7 is effected by using a plurality of metallic stays, which are first inserted with their end portions into correspondent through holes (not indicated) provided through the relative end portions of the different component parts, and then such stays are stretched in a manner to support all the component parts in an upright position. In the Figure 7 it is noted that the stays used to join the end portions of the different component parts of the supports structure 7 are marked with the reference numerals 51, 52, 56, 57, 58, 59 and 60, and in particular the stays 51 and 56 are directed in an inclined direction and join the respective horizontal rectilinear section bars 16 and 17 with the upper part of the vertical rectilinear section bar 13, whereas the stays 57 and 58 are also directed in an inclined direction and join the respective horizontal rectilinear section bar 14 and 15 with the upper part of the vertical rectilinear section bar 22. Besides, in such case, the central vertical section bar 13 supporting the eolian generator 5 is supported by an horizontal hinging element 61, of removable type, provided with three through holes adjacent and separated from each other (not indicated), through which the above-mentioned three vertical section bars 13, 22 and 23 are let to pass, in a manner that such hinging element 61 supports all these section bars in an aligned and joined position thereof, and that therefore these section bars may be shifted at the same time from the one to the other one of their inclined and upright positions.

In turn, the stays 52, 59 and 60 are directed in the horizontal direction and join the horizontal section bars 14-17 to each other, and in particular the stay 52 joins the two section bars 15 and 16, the stay 59 joins the two section bars 16 and 17 and the stay 60 joins the two section bars 17 and 14, but naturally the arrangement of the stays and their junction with the different component parts of the present support structure 7 may be effected also in different manners than those indicated by way of example only, provided that the same result be always achieved, thus without departing from the protection sphere of the present invention. Figures 8 and 9 show two different assembling phases of the support structure 7 by using the above-described stays, and in particular in the phase of Figure 8 it is noted that the different ballasts 24, 25, 26 and 27 are at first placed in the respective application positions thereof, in this case onto the roof of an inhabited building, onto which it is not necessary that the same be anchored, while all the specified stays are joined with the various component parts of the support structure 7, however they are maintained loosen and not stretched among the same component parts, and under this condition the hinging element 61, which is applied onto the three section bars 13, 22 and 23, is also maintained loosen onto the same section bars, so that the two section bars 22 and 23 which are hinged to the flat plate 18 are arranged inclined with respect to the same plate, while the section bar 13 which is loose and articulated with respect to the section bars 22 and 23 may be overturned with respect to these latter, and shifted downward with its upper part 62, for fixing then onto this latter the eolian generator 5. Then, in the subsequent assembling phase of the Figure 9, after that the eolian generator 5 has been fixed with traditional fixing means onto the upper part 62 of the section bar 13, this latter is overturned from the inclined position of Figure 8 and gradually shifted toward its vertical upright position, by acting on to the various stays for determining the shifting of the section bar 13 in this position, with consequent gradual shifting of the eolian generator in the same direction, toward the ultimate operative position thereof. When the overturning of the section bar 13 is ended, in which this latter is shifted in its vertical upright position, see Figures 7 and 10, all the stays are stretched with such stretches as to maintain all the component parts, together with the hinging element 61, always correctly joined, positioned, stable and balanced to each other, thereby ensuring to the eolian generator 5 to operate under all the operative conditions and all the foreseen meteorological conditions, thus without that the support structure 7 and the various component parts of the eolian generator 5 may be never displaced from this position. The actions exerted on to the section bars and the ballast as well as the eolian generator for their displacements, are performed by using preferably a traditional manually actuated winch, which is from time to time coupled to the various parts to be lowered, inclined, lifted, and overturned, which involves a limited encumbrance and may be handled, assembled and disassembled in an easy and quick manner, thereby preventing the use of some expensive and encumbering hydraulic systems, oleo-dynamic systems etc ., as hitherto was necessary to do for installing the present support structures for the eolian generators. In turn, the arrangement to the same level of all the component parts of the support structure in their installation position, is effected by acting on to the stays through simple cable stressing devices.

The advantages deriving by the use of this support structure consist also in the very lower total costs, which can be estimated to be about one-third of the costs of an analogue support structure existing at the present on the market, as well as in the possibility to be able to assemble in advance in the workshop all the ballasts and to use the ballast materials such as the inert materials which can be found easily and are less expensive.

Furthermore, thanks to the use of very wide rigging stays, a rigid structure with moment of inertia is obtained, thereby allowing that the central section bar or pole 13 be very thin, with consequent saving of material and labour costs for manufacturing this central section bar.

By returning again to Figure 1 , in which as already described all the ballasts are realized as a single block, it is noted that also such ballasts are formed by a metallic electric welded net 63 with the same shape of the block, the internal cavity of which is again filled with inert material, and into the same a relative metallic rod 64 is secured for stiffening the structure and for fixing the respective free end portion of the horizontal section bars 14-17. Thereafter, also here each ballast block is closed at all sides with peripheral metallic walls (not shown), and also in this case there are used the same horizontal and vertical section bars as well as the same above-described stays, which therefore are marked with the same preceding reference numerals. Referring to Figures 12-21, a second embodiment of the support structure 65 according to the invention is now shown, and in particular the Figures 14-16 illustrate the conformations of the ballasts of the present support structure, realized in a different manner with respect to the previous ones, the Figures 12 and 13 illustrate the support structure assembled with the relative eolian generator, and the Figures 17-21 show different assembling and installation phases of the support structure and the eolian generator.

From Figures 12 and 13 it is noted that the support structure 65 is always constituted by a lengthened vertical rectilinear section bar 13, preferably of tubular shape, or also with another suitable geometrical shape, onto the upper end portion thereof the eolian generator 5 is secured and supported, and the lower end portion of which is raised from the ground and is hinged removably with three rectilinear section bars 66, 67 and 68 inclined as a strut, and having the same length, also with a tubular shape or also with another suitable shape, which are spaced away to each other of the same angular distance, thereby forming an equilateral triangle, and the free end portions of such inclined section bars 66, 67 and 68 are articulated with a respective ballast made in concrete 69, 70 and 71, as it will be described.

Even in this case the support structure 65 is constituted by a plurality of metallic stays, which join to each other all the rectilinear section bars 13, 66, 67 and 68, and the ballasts 69, 70 and 71 and these stays are also joined at a determined height with three additional rectilinear section bars 72, 73 and 74, with the same length and shorter than the preceding section bars, which have also a tubular shape or another suitable geometrical shape, and are spaced away to each other of the same angular distance, thereby forming an equilateral triangle, and act as rigging stays for the vertical lengthened section bar or pole 13.

Figure 14 shows one of the ballasts of the present support structure, for example the ballast 70, with a portion of the relative inclined section bar 67 that is articulated with the same ballast, whereas the Figure 15 shows the internal metallic armature 75 for forming such ballast made in concrete, together with a portion of the relative inclined section bar 67 that is articulated with the same ballast, and the Figure 16 shows the other two ballasts 69 and 71 with a portion of the relative inclined section bars 66 and 68.

As visible from the Figures 12 and 13, and in detail from the Figures 18, 20 and 21, in which the lower portion of the support structure 65 is shown, the rectilinear section bars acting as rigging stays 72, 73 and 74 are hinged with the vertical central section bar 13 and the free end portions of said rectilinear section bars are joined to each other through respective rectilinear stays 76, 77 and 78 inserted into correspondent through holes (not indicated) of these free end portions. Additional stays are provided for joining the different section bars of the support structure, and in particular there are provided some inclined stays directed downward, for joining the free end portions of the upper rectilinear section bars (rigging stays) 72, 73 and 74 with the free end portions of the respective lower inclined section bars 66, 67 and 68, and some inclined stays directed upward, for joining all the free end portions of such upper rectilinear section bars 72, 73 and 74 with the vertical central section bar 13, in an unique position 79 obtained along the same central section bar, at a height shorter than the upper height 80 of said central section bar 13, in which the eolian generator is fixed and supported. In the indicated example, stays 81 and 82 are provided for joining the free end portions of the upper rectilinear section bar 72 with the end portion of the lower section bar 66, the stays 83 and 84 for joining the free end portions of the upper section bar 73 with the end portion of the lower section bar 67, the stays 85 and 86 for joining the free end portions of the upper section bar 74 with the end portion of the lower section bar 68. Naturally, the stays may be provided also with arrangements and quantities different than those indicated by way of non-limiting example only, for joining to each other all the section bars, always for obtaining as a result a structure with all the characteristics and advantages of the structure previously described, thus without departing from the protection sphere of the present invention.

Referring now to the Figures 14 and 16, in which the ballasts made in concrete 70, 71 and 69 as 00006 already specified are indicated, it is noted that the same are shaped with a cylindrical shape and provided with a metallic coupling element 87, 88 and 89, respectively, included into the concrete and shaped for coupling and fixing the respective section bars 66, 68 and 67 inclined as a strut during the assembling of the support structure. Each ballast is realized by assembling at first the different component parts 90, 91 and 92 of the armature 75 of the same ballast to each other (see Fig. 15), then by inserting the terminal tip 93 of the vertical pole 92 constituting this armature through a correspondent through hole (not indicated), provided through the relative metallic coupling element for the lower inclined section bar, and by preparing an appropriate form (not shown) for each ballast, for pouring then the concrete around the armature 75, in a manner to form the ballast with the relative coupling element included therein. Each form is at first arranged in the relative application position thereof, provided by digging the ground for a sufficient depth for obtaining the ballasts with the desired thickness and with their upper surface at the ground level, and subsequently by pouring the concrete with the pre-established quantities into the different forms, and letting the same concrete to harden, before starting to assemble the support structure. Also in this case, the structure is installed with the same operative phases previously described, that is by lowering at first all the component parts of the structure joined to each other in a loose manner with the above described stays and shrouds (see Figures 17 and 18), so as to fix the eolian generator 5 onto the upper tip 80 of the rectilinear section bar 13, and then by lifting gradually all the

component parts (see Figure 19), up to arrange them in the vertical upright position thereof (see Figures 12, 13, 20 and 21), in which thereafter all the stays and all the shrouds are pulled also through the cable stretching devices. For performing the lowering and the lifting of the various component parts of the present support structure, it is used at least a lifting winch with multi-pulleys of traditional type, marked with the reference numeral 94, that during the use thereof is anchored to an appropriate plate 95 also included into at least one of the ballasts, which in the indicated example is the ballast 70, and at the end of the assembling phases such winch is disassembled, so as to let free the upper surfaces of all the ballasts so applied in position.