DESC:FIELD OF THE INVENTION:

The present invention relates to a construction device for assembling a first component of a wind turbine to a second component of said wind turbine. Furthermore, the present invention relates to a drive train of a wind turbine as well as to a wind turbine itself.

BACKGROUND

Wind turbines are widely known in the prior art. Wind turbines generally comprise a nacelle incorporating different components of a drive train and a rotor with one or more rotor blades. The nacelle is mounted on a tower. The rotor is connected to a rotor shaft via a hub, on which the rotor blades are mounted.

The installation of a wind turbine is often performed in such a way that, in a first step the tower is erected and that, in a second step, the nacelle is mouthed on top of the tower by means of a special crane device. Very often, the rotor is pre-assembled on the ground by mounting the rotor blades to the hub. Afterwards, the entire rotor is lifted by the crane device in the direction of the nacelle, where the rotor, via its hub, gets assembled to the rotor shaft which is incorporated inside the nacelle. This assemblage is very difficult, since the rotor has to be brought and has to be held in a predetermined position with regard to the rotor shaft such that the rotor can be fixed at the rotor shaft, by use of a number of fixing bolts for example.

In order to center the rotor in relation to the rotor shaft, different solutions have been developed in the general prior art.

According to one known solution, one or more guiding bolts are used. The guiding bolt gets either fastened to the rotor shaft or to the rotor hub. With its free end, the guiding bolt can be introduced into a corresponding hole, which is formed in the other component. However, since the diameter of both the guiding bolt and the corresponding hole is pretty small, it is very difficult to hit the corresponding hole with the guiding bolt. Furthermore there is a high danger, that the guiding bolt or the thread into which the guiding bolt is screwed in, may get damaged during the assembling procedure.

According to another solution which is known in the general prior art, the rotor hub can be positively connected to the rotor shaft by use of a recess which is provided in said rotor shaft. However, it is again very difficult to hit this recess. Furthermore, one cannot avoid a tilting movement of the rotor such that there remains a gap between the front portion, a flange for example, of the rotor hub and the front portion, a flange for example, of the rotor shaft. This gap has to be closed by means of the fixing bolts. For this reason the rotor has to be rotated after its assemblage and the fixing bolts have to be fastened again, in order to achieve the desired preload force.

The object is solved according to the invention by the construction device with the features according to independent claim 1, which is first aspect of the invention, by the drive shaft of a wind turbine with the features of independent claim 13, which is the second aspect of the invention, and by the wind turbine with the features of independent claim 15, which is the third aspect of the invention. Further features and details of the invention can be derived from the dependent claims, from the description as well as from the drawings. Therein, features and details which are described in connection with one aspect according to the invention apply with respect to their disclosure in their entirety also to the other aspects according to the invention, so that statements made with respect to one aspect also apply to their full extent to the other aspects and vice versa.

The present invention is directed to the technical field of wind turbines. However, the present invention is not limited to specific types of wind turbines.

OBJECT OF THE INVENTION

An object of the present invention is to provide for a construction device for assembling components of a wind turbine with minimal hassle and in most efficient assemblage procedure.

An object of the present invention is to provide for a construction device for assembling components of a wind turbine which provides for a construction device for assembling two components of a wind turbine which each other, in particular for assembling a rotor to a rotor shaft, which allows that the first component of the wind turbine can be assembled to the second component of the wind turbine in an easy way without having the risk of damaging any parts of the construction device or of the wind turbine components.

Yet another object of the present invention is to provide for a construction device for assembling components of a wind turbine, wherein a construction device is used which is capable of assembling a first component of a wind turbine, a rotor or a hub for example, to a second component of the wind turbine, a rotor shaft for example, in a simplified manner.

SUMMARY OF THE INVENTION

In a preferred embodiment, a wind turbine comprises a tower, at the top of which a nacelle is mounted. Inside the nacelle, different mechanical components of the drive train are incorporated, for example the rotor shaft, the gearbox and the high-speed shaft. Furthermore, different electric components can be incorporated inside the nacelle as well. The drive train transmits and converts the rotor speed to the generator.

Preferably, the drive train comprises at least one rotor hub, on which the rotor blades, three rotor blades for example, are mounted. The rotor hub and the rotor blades in their entirety provide the rotor. The entire rotor can be part of the drive train as well. According to a preferred type of wind turbines the rotor blades are adjustably mounted on the hub. This is realized by means of a pitch drive, said pitch drive being part of a pitch system. The pitch system, which is generally known in the prior art, participates in the control of the rotor speed to given set points. In general, the rotor speed is controlled by the load and by the pitch angle. By means of the pitch-drive, the rotor blades may be moved about a rotor blade axes into different pitch positions, said rotor blade axis extending in an axial direction of the rotor blade.

In particular, the rotor gets assembled to the rotor shaft via its hub. For this purpose the rotor hub may comprise a front portion, a flange for example, which is adapted to be mounted and which therefore gets mounted to a front portion of the rotor shaft, a flange for example. The fixation can be achieved by using a number of fixing devices, fixing bolts for example.

Principally, the present invention is not limited to specific embodiments of components of a wind turbine which can be assembled to each other by means of such a construction device according to the present invention.

However, in a preferred embodiment, the present invention is directed to assembling a rotor or a hub of a wind turbine as a first component to a rotor shaft of the wind turbine as a second component.

The underlying concept of the present invention is that in all different aspects of the invention a construction device is used which is capable of assembling a first component of a wind turbine, a rotor or a hub for example, to a second component of the wind turbine, a rotor shaft for example, in a simplified manner. For that reason, as will be explained in detail further below, the construction device is configured in a very specific manner. Due to the specific configuration of the construction device, a tight fit between both components of the wind turbine to be assembled can be achieved. The construction device is provided in such a way that the first component of the wind turbine, the rotor or hub for example, which is assembled to the second component of the wind turbine, the rotor shaft for example, automatically centres under load and that both components cling to each other without any gap under load. Furthermore, due to the specific configuration of the construction device, the first component, the rotor or hub for example, which is assembled to the second component, the rotor shaft for example, can align itself due to its own weight, such that any fastening devices, fastening bolts for example, can be inserted and mounted without any problems.

Pursuant to to the first aspect of the present invention, a construction device is provided, said construction device being adapted for assembling a first component of a wind turbine, in particular a rotor or a hub of a wind turbine, to a second component of said wind turbine, in particular a rotor shaft of said wind turbine, said construction device comprising a male connector element and a female connector element, one of the connector elements being mounted or formed, or being adapted to be mounted or formed at the first component of the wind turbine and the other connector element being mounted or formed or being adapted to be mounted or formed at the second component of the wind turbine, said male connector element being adapted to interact with the female connector element such that the male connector element protrudes from the component of the wind turbine, at which the male connector element is mounted or formed and that the female connector element comprises a recess, said recess receiving or being adapted to receiving the male connector element. The construction device is characterized in that the male connector element has an alignment which is inclined with respect to a central axis of the component of the wind turbine, at which the male connector element is mounted or formed.

According to this first aspect, the present invention is directed to a construction device. It is the purpose of this construction device that a first component of a wind turbine can get assembled to a second component of said wind turbine. According to a preferred embodiment, the first component of the wind turbine is a rotor, comprising a hub and a number or rotor blades being mounted thereto, or a hub, said hub being adapted that a number of rotor blades being mounted thereto. Therefore, the construction device is adapted for assembling a first component of a wind turbine, in particular a rotor or a hub of a wind turbine, to a second component of said wind turbine, in particular a rotor shaft of said wind turbine.

The construction device according to the present invention comprises two connector elements. The first connector element is a male connector element. In particular, a male connector element is an elongated element, a protrusion, a bolt, a rod, a pin or the like, which plugs into a female connector element. In a preferred embodiment, the male connector element can protrude from a surface, on which the male connector element is mounted or formed. The second connector element is provided as a female connector element. In particular, a female connector element is a receptacle, a recess or the like, that receives and particularly holds the male connector element.
According to the present invention, one of the connector elements is mounted or formed, or is adapted to be mounted or formed at the first component of the wind turbine, whilst the other connector element is mounted or formed or is adapted to be mounted or formed at the second component of the wind turbine. According to a preferred embodiment, the female connector element is mounted or formed at the first component of the wind turbine, at the rotor or hub for example. In this case the male connector element is preferably mounted or formed at the second component of the wind turbine, the rotor shaft for example.

The male connector element is adapted to interact with the female connector element as mentioned further above. For this reason, it is preferably provided that the male connector element protrudes from the component of the wind turbine, at which the male connector element is mounted or formed and that the female connector element comprises a recess, said recess receiving or being adapted to receiving the male connector element.

In a preferred embodiment, the female connector element is formed in a hub of a rotor of a wind turbine, in particular in a flange of said hub. The male connector is mounted or formed at the rotor shaft of a wind turbine, such that the female connector element forms a recess in the hub, said recess being adapted for receiving the male connector element, whereby the male connector element protrudes from a front portion of the rotor shaft, in particular from a rotor shaft flange. Preferably, a flange in the sense of the present invention is some kind of a connecting element, which allows positioning the components to be connected in relation to each other and which allows the transmittance of operational forces. Preferably, both flanges are ring shaped, having one inner surface being radial inwardly directed and one outer surface being radial outwardly directed, both in relation to a central axis of said flange. Furthermore both flanges comprise a frontal surface, said frontal surface being adapted to get in contact with a corresponding frontal surface of the other flange. Preferably, both flanges abut on each other via their frontal surfaces respectively.

According to the present invention, the male connector element has an alignment which is inclined with respect to a central axis of the component of the wind turbine, at which the male connector element is mounted or formed. The central axis of the component of the wind turbine runs in the centre or through the centre of the component of the wind turbine, which usually is the middle of this component. Therefore the central axis could be referred to as the middle-axis of this component as well. It the component is an elongated member, a rotor shaft for example, the central axis might run in the longitudinal direction of the component.

According to the present invention, the male connector element has a specific alignment. That means that the male connector element is positioned or adjusted in a specific way and direction in relation to the component of the wind turbine, at which the male connector element is mounted or formed.

According to the present invention the alignment of the male connector element is inclined. In particular, this means that the male connector element deviates from a line, direction or course, in particular from the vertical or horizontal. According to the present invention, the male connector element deviates in its direction of extension from the direction of central axis of the component of the wind turbine, at which the male connector element is mounted or formed. Since the male connector element has an alignment which is inclined to the central axis of the component of the wind turbine, at which the male connector element is mounted or formed, the male connector element has an extension, in particular a longitudinal extension, with a direction of orientation, which is different from the direction of orientation of the central axis of this component, at which the male connector element is mounted or formed. This means that the orientation of the male connector element differs from the orientation of the central axis. Therefore the course of the male connector element does not run in parallel to the course of the component, at which the male connector element is mounted or formed. Rather, the male connector element has a sloping course in comparison to the course of the central axis of the component of the wind turbine, the rotor shaft for example.

At its free end, which is received by the recess of the female connector element, the male connector element may be provided with a tapered tip such that the male connector element can be easily inserted and arranged inside the female connector element.

Such a male connector element which has an alignment being inclined is capable of providing that the weight load of the first component of the wind turbine, the rotor or hub for example, can be transferred into the second component of the wind turbine, the rotor shaft for example. Under load, due to the inclined alignment of the male connector element, the first component which is connected to the male connector element by means of its female connector element automatically slides in the direction of the second component. Thus, according to the preferred embodiment, the rotor or hub comprising the female connector element automatically slides in the direction of the rotor shaft, in particular the flange of the rotor shaft. Furthermore, the use of such an inclined male connector element allows that the first component of the wind turbine may perform a rotation about the male connector element of the second component.

In a preferred embodiment the alignment of the male connector element is such that the male connector element extends radially outwards starting from that point of the component of the wind turbine, the flange of the rotor shaft for example, from which the male connector element protrudes.

According to a different preferred embodiment the male connector element has an alignment which is inclined to the horizontal line.

In any case, the male connector element can be inclined in an upward direction as seen from that point of the component of the wind turbine, the flange of the rotor shaft for example, from which the male connector element protrudes.

In a preferred embodiment the inclined male connector element has a gradient, the course of this gradient being such that it leads away from the central axis of the component of the wind turbine, from which the male connector element protrudes, as seen from the direction of said component of the wind turbine.

In a preferred embodiment, the male connector element is mounted or formed at the rotor shaft at a position being the highest point of the rotor shaft with regard to the central axis of the rotor shaft. According to a different embodiment, the male connector element is mounted or formed at the rotor shaft at a position being nearby or in the vicinity to the highest point of the rotor shaft with regard to the central axis of the rotor shaft. In particular the male connector element is mounted or formed at the highest point of the rotor shaft or nearby thereto with the rotor being interlocked.

According to a preferred embodiment, the male connector element comprises a bolt which is mounted into a corresponding hole, said hole being formed in the component of the wind turbine, at which the male connector element is mounted. Preferably the bolt is fixed inside this hole, by means of a gluing connection, a welding connection or the like. According to a different embodiment, the male connector element can be an integral part of the component of the wind turbine.

As explained further above, the male connector element interacts with a female connector element, said female connector element corresponding to the male connector element. It is a general purpose of this female connector element, that the component of the wind turbine, at which the female connector element is mounted or formed, a rotor or a hub for example, hangs in a correct position under load, whereby the weight load of the component of the wind turbine with the female connector element can be transferred to the component of the wind turbine with the male connector element. Furthermore the female connector device should be configured such that the component of the wind turbine with the female connector element can rotate around one point. In the following, preferred embodiments for such a female connector element are described in more detail.

Preferably the female connector element is formed in a hub, in particular in a hub flange.

According to a preferred embodiment, the recess of said female connector element has an inner surface, said inner surface bordering an interior space of the recess, said recess further comprising an opening for receiving the male connector element, whereby a portion of this inner surface comes or is in direct contact with the male connector element, in particular that this portion of this inner surface rests on the male connector element, when the male connector element is introduced into the female connector element. In a preferred embodiment, this portion of the female connector element, which comes or is in direct contact with the male connector element, is the vertex or peak of the female connector element, in particular of the interior space of the recess of said female connector element.

Preferably, the portion of the inner surface of the recess of said female connector element which comes or is in direct contact with the male connector element, has an alignment which corresponds to the alignment of the male connector element. In particular, the portion of the inner surface of the recess of the female connector element which comes or is in direct contact with the male connector element is inclined with the same gradient as the gradient of inclination of the male connector element.

In a preferred embodiment, the interior space of the recess, as seen from the portion of the inner surface, which comes or is in direct contact with the male connector element, has a broadened shape in a downward direction. That means, as seen from this portion of the inner surface, which preferably forms the vertex or peak of the interior space, the interior space gets wider in a downward direction which is a direction leading away from this portion of the inner surface. If the female connector element is formed in a ring shaped flange of the hub, the interior space gets wider in a radial inwardly oriented direction of said flange, that means in the direction of the central axis of the flange.

Due to such a configuration it is much easier to insert the male connector element into the recess of the female connector element.

In a preferred embodiment, the opening for receiving the male connector element of the recess of female connector element has a V- or U-shaped cross section.

Pursuant to a second aspect of the present invention, a drive train of a wind turbine is provided, said drive train comprising a hub and a rotor shaft, said hub being assembled to said rotor shaft or being capable of being assembled to said rotor shaft by means of a construction device according to the first aspect of the present invention. The drive train can be configured as mentioned further above. Preferably, the hub connects the rotor blades with the drive train. With regard to the construction device, the disclosure of the first aspect of the invention applies with respect to the disclosure in entirety also to the drive train according to the second aspect according to the invention, so that all of the statements made with respect to first aspect of the invention also apply to their full extent to the second aspect of the invention, and vice versa. Preferably, the male connector element is mounted or formed at the rotor shaft, in particular at a front face or a front flange of the rotor shaft, and that the female connector element is mounted or formed at the rotor, in particular at a hub of said rotor, more particular at a front face or a front flange of said rotor or hub.

Pursuant to a third aspect of the present invention, a wind turbine is provided, said wind turbine comprising a tower on which a drive train according to the second aspect of the invention is mounted. The wind turbine can be configured as mentioned further above. With regard to the drive train and the construction device, the disclosure of the first aspect and of the second aspect of the invention applies with respect to the disclosure in entirety also to the wind turbine according to the third aspect according to the invention, so that all of the statements made with respect to first and second aspects of the invention also apply to their full extent to the third aspect of the invention, and vice versa.

The present invention according to its three aspects has a number of advantages. Due to the specific configuration of the construction device according to the invention, the overall assembly time can be reduced. Furthermore any mistakes or damages during assemblage can be avoided. The required number of assembling steps can be reduced. The components of the wind turbine which are assembled by use of the construction device according to the invention can be automatically aligned and centered.

BRIEF DESCRIPTION OF DRAWINGS
The invention will now be explained in more detail with respect to exemplary embodiments with reference to the enclosed drawings, wherein:

Figure 1 shows a depiction of a wind turbine;
Figures 2
to 5 show different views of parts of a drive train incorporating a construction device according to the present invention; and
Figures 6 and 7 depict two cross sectional views showing the assembly of a hub to a rotor shaft.

The foregoing and other aspects will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawing figures.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 depicts a wind turbine (10) with a tower (12) and a nacelle (11). Nacelle (11) is rotatable mounted on the tower (12). Nacelle (11) incorporates a number of components of a drive train (13), a rotor shaft (not shown in Figure 1) for example. Said rotor shaft is connected to a rotor (14). Rotor (14) comprises three rotor blades (16) which are mounted to a hub (15). Hub (15) of rotor (14) is connected to the rotor shaft of the drive train (13). The rotor blades (16) are adjustably mounted on the hub (15). This is realized by means of pitch drives (17), said pitch drives (17) being part of a pitch system. The pitch system controls the rotor speed to given set points. By means of pitch-drives (17), the rotor blades (16) may be moved about a rotor blade axes into different pitch positions, said rotor blade axis extending in an axial direction of the rotor blades (16). Each rotor blade (16) is connected to the hub (15) via its pitch-drive (17).

Figures 2 to 7 show in more detail but in segmented views only some components of the drive train (13), namely a hub (15) and a rotor shaft (19), which are assembled by means of a construction device (30) according to the present invention. In these drawings identical elements are numbered with identical reference numerals.

As evident from Figures 2 and 3, drive train (13) comprises a hub (15) and a rotor shaft (19). Rotor shaft (19) is a longitudinal member comprising a central axis (21). At its front end, rotor shaft (19) comprises a rotor shaft flange (20), said rotor shaft flange (20) being used to assemble rotor shaft (19) to a hub flange (18) of hub (15).

In order to assemble hub (15) via its hub flange (18) to rotor shaft flange (20) of rotor shaft (19), a construction device (30) according to the present invention is used.

As evident from Figure 5, construction device (30) comprises two connector elements. One connector element is a male connector element (31) which is formed as a bolt (32) and which protrudes from the front face of rotor shaft flange (20). For this purpose, rotor shaft flange (20) comprises a hole (33) into which bolt (32) of said male connector element (31) is introduced and being fixed therein. Bolt (32) protrudes from rotor shaft flange (20) into the direction of hub flange (18).

As can be seen from Figures 2 and 5, the male connector element (31) has an alignment (35) which is inclined with respect to a central axis (21) of the rotor shaft (19). In the present embodiment, the course of the central axis (21) of rotor shaft (19) is the direction of the horizontal line such that the male connector element (31) has an alignment which is inclined to the horizontal line in an upward direction as seen from the direction of rotor shaft flange (20) from which the male connector element (31) protrudes.

With regard to the coordinate system as depicted in Figures 6 and 7, the male connector element (31) extends in a radial outward direction (43) which is perpendicular to the axial direction (44) of central axis (21), starting from that point of rotor shaft (20) flange, from which the male connector element (31) protrudes.

As can be derived from Figures 2 and 5, the male connector element (31) is mounted or formed at the rotor shaft flange (20) at a position being the highest point or being nearby to the highest point of the rotor shaft (19) with regard to the central axis (21) of the rotor shaft (19).

At its free end (34) bolt (32) of male connector element (31) has a tapered tip such that the male connector element (31) can be easily inserted into another connector element of construction device (30), which corresponds to the male connector element (31) and which interacts with male connector element (31).

This second connector element is a female connector element (36), said female connector element (36) comprising a recess (37) for receiving the male connector element (31). Female connector element (36) is formed in hub flange (18). This female connector element (36) is depicted in detail in Figures 4 and 5, wherein Figure 4 is a representation of the enlarged section (50) as depicted in Figure 3.

As evident from these figures, the recess (37) of female connector element (35) has an inner surface (39), said inner surface (39) bordering an interior space (40) of the recess (37). Recess (37) further comprises an opening (38) for receiving the male connector element (31), whereby the opening (38) is provided in the front surface of hub flange (18) said front surface being directed to the front surface of rotor shaft flange (20).

A portion (41) of this inner surface (39) of female connector element (36) comes or is in direct contact with the male connector element (31), such that this portion (41) of this inner surface (39) rests on the male connector element (31), when the male connector element (31) is introduced into the female connector element (36). As evident from Figure 4, this portion of the female connector element (36), which comes or is in direct contact with the male connector element (31), is the vertex or peak of the female connector element (36), in particular of the interior space (40) of recess (37) of said female connector element (36).

Portion (41) of inner surface (39) of the recess (37) of said female connector element (36) has an alignment which corresponds to the alignment of the male connector element (31).

As further evident from Figure 4, the interior space (40) of the recess (37), as seen from the portion (41) of the inner surface, which comes or is in direct contact with the male connector element (31), has a broadened shape in a downward direction (45). That means, as seen from this portion (41) of the inner surface, which preferably forms the vertex or peak of the interior space (40), the interior space (40) gets wider in this downward direction (45) which is a direction leading away from this portion (41) of the inner surface. At the opposite end of portion (41), interior space (40) comprises a second opening (42), which aligns with a surface (22) of hub flange (18), said surface (22) being radially inwardly directed. Due to such a configuration it is much easier to insert the male connector element (31) into the recess of the female connector element (36).

In a preferred embodiment, the opening (38) for receiving the male connector element of the recess of female connector element has a V- or U-shaped cross section.

Such a male connector element (31) of construction device (30) which has an inclined alignment is capable of providing that the weight load of the hub (15) can be transferred to the rotor shaft (19). This is explained with respect to Figures 6 and 7, both Figures depicting cross sectional views showing the assembly of hub (15) to a rotor shaft (19).

Under load, due to the inclined alignment of the male connector element (31), hub (15), who’s recess (37) of female connector element (36) is brought in contact with male connector element (31) by inserting male connector element (31) into the interior space (40) of recess (37) (Figure 6) automatically slides in the direction of rotor shaft flange (20) (Figure 7). Furthermore, the use of such an inclined male connector element (31) allows that the first component of the wind turbine may perform a rotation around the male connector element (31).

List of Reference Numerals

10 Wind turbine
11 Nacelle
12 Tower
13 Drive train
14 Rotor
15 Hub
16 Rotor blade
17 Pitch drive
18 Hub flange
19 Rotor shaft
20 Rotor shaft flange
21 Central axis of rotor shaft
22 Radial inwardly lying surface of hub flange
30 Construction device
31 Male connector element
32 Bolt
33 Hole
34 Tapered free end
35 Inclined alignment of the male connector element
36 Female connector element
37 Recess
38 Opening
39 Inner surface
40 Interior space
41 Portion of the inner surface
42 Opening
43 Radial outward direction
44 Axial direction
45 Downward direction
50 Enlarged section

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles described herein can be applied to other embodiments without departing from the spirit or scope of the invention. Thus, it is to be understood that the description and drawings presented herein represent a presently preferred embodiment of the invention and are therefore representative of the subject matter which is broadly contemplated by the present invention. It is further understood that the scope of the present invention fully encompasses other embodiments that may become obvious to those skilled in the art and that the scope of the present invention is accordingly not limited.
,CLAIMS:We claim:

1. A construction device (30) for assembling components of a wind turbine, wherein said construction device (30) being adapted for assembling a first component of a wind turbine, in particular a rotor (14) or a hub (15) of a wind turbine (109), to a second component of said wind turbine, in particular a rotor shaft (19) of said wind turbine (10), said construction device (30) comprising a male connector element (31) and a female connector element (36), one of the connector elements being mounted or formed, or being adapted to be mounted or formed at the first component of the wind turbine and the other connector element being mounted or formed or being adapted to be mounted or formed at the second component of the wind turbine, said male connector element (31) being adapted to interact with the female connector element (36) such that the male connector element (31) protrudes from the component of the wind turbine, at which the male connector element (31) is mounted or formed and that the female connector element (36) comprises a recess (37), said recess (37) receiving or being adapted to receiving the male connector element (31), characterized in that the male connector element (31) has an alignment (35) which is inclined with respect to a central axis (21) of the component of the wind turbine, at which the male connector element is mounted or formed.

2. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the male connector element (31) has an alignment (35) which is inclined to the horizontal line.

3. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the male connector element (31) is inclined in an upward direction.

4. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the inclined male connector element (31) has a gradient, the course of this gradient being such that it leads away from the central axis (21) of the component of the wind turbine, from which the male connector element protrudes, as seen from the direction of said component of the wind turbine.

5. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the female connector element (36) is formed in a hub (15) of a rotor (14) of a wind turbine (10), in particular in a flange (18) of said hub (15), and that the male connector element (31) is mounted or formed at the rotor shaft (19) of a wind turbine (10), such that the female connector element (36) forms a recess (37) in the hub (15), said recess (37) being adapted for receiving the male connector element (31), and that the male connector element (31) protrudes from a front surface of the rotor shaft (19), in particular from a rotor shaft flange (20).

6. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the male connector element (31) is mounted or formed at the rotor shaft (19) at a position being the highest point of the rotor shaft (19) with regard to the central axis (21) of the rotor shaft (19), or that the male connector element (31) is mounted or formed at the rotor shaft (19) at a position being nearby or in the vicinity to the highest point of the rotor shaft with regard to the central axis (21) of the rotor shaft (19).

7. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the male connector element (31) comprises a bolt (32) which is mounted into a corresponding hole (33), said hole (33) being formed in the component of the wind turbine, at which the male connector element (31) is mounted.

8. A construction device (30) for assembling components of a wind turbine as claimed in claim 1, wherein the recess (37) of said female connector element (36) has an inner surface (39), said inner surface (39) bordering an interior space (40) of the recess (37), said recess (37) further comprising an opening (38) for receiving the male connector element (31), and that a portion (41) of this inner surface (39) comes or is in direct contact with the male connector element (31), in particular that this portion (41) of this inner surface (39) rests on the male connector element (31), when the male connector element (31) is introduced into the female connector element (36).

9. A construction device (30) for assembling components of a wind turbine as claimed in claim 8, wherein the portion (41) of the inner surface (39) of the recess (37) of said female connector element (36) which comes or is in direct contact with the male connector element (31), has an alignment which corresponds to the alignment (35) of the male connector element (31).

10. A construction device (30) for assembling components of a wind turbine as claimed in claim 9, wherein the portion (41) of the inner surface (39) of the recess (37) of the female connector element (36) which comes or is in direct contact with the male connector element (31) is inclined with the same gradient as the gradient of inclination of the male connector element (31).

11. A construction device (30) for assembling components of a wind turbine as claimed in claim 8, wherein the interior space (40) of the recess (37), as seen from the portion (41) of the inner surface (39), which comes or is in direct contact with the male connector element (31), has a broadened shape in a downward direction (45).

12. A construction device (30) for assembling components of a wind turbine as claimed in claim 8, wherein the opening (38) for receiving the male connector element (31) of the recess (37) of female connector element (36) has a V- or U-shaped cross section.

13. A drive train (13) of a wind turbine (10), said drive train (13) comprising a hub (15) and a rotor shaft (19), said hub (15) being assembled to said rotor shaft (19) or being capable of being assembled to said rotor shaft (19) by means of a construction device (30).

14. The drive train (13) of a wind turbine as claimed in claim 13, wherein the male connector element (31) is mounted or formed at the rotor shaft (19), in particular at a front face or a front flange (20) of the rotor shaft (19), and that the female connector element (36) is mounted or formed at the hub (15), in particular at a front face or a front flange (18) of said hub (15).