Abstract:
A mounting system for strand-shaped functional elements ( 5 ) such as cables or lines, particularly for wind power plants, has a main body ( 1 ) having strand passageways ( 3 ) formed by receiving spaces ( 7 ) with openings ( 13 ) for inserting functional elements ( 5 ). The openings are closable by a cover devices ( 49, 43 ). The spaces define receiving axes ( 15 ) extending from the outer opening ( 13 ) to the inner end ( 17 ) of the receiving spaces ( 7 ). The main body ( 1 ) is formed from at least two sector elements ( 11, 12 ) each having at least one strand passageway ( 3 ) and coupleable to one another at at least one connecting point ( 21 ). The receiving axes ( 15 ) of successive strand passageways ( 3 ) on the main body ( 1 ) diverge outwardly.

Description:
FIELD OF THE INVENTION 
     The invention relates to a mounting system for strand-shaped functional elements such as cables or lines, in particular for wind power plants. The mounting system has a main body having strand passageways formed by receiving spaces, which spaces have openings for the insertion of functional elements that can be closed by cover devices. Each receiving space defines a receiving axis extending from the outer opening to the inner end of the respective receiving space. 
     BACKGROUND OF THE INVENTION 
     In conventional wind power plants, the nacelle rotatably disposed on the tower contains the generator units having the corresponding assemblies and can perform up to three turns before the nacelle is driven back. Strand-shaped operational functional elements, such as cables for the removal of generated energy as well as for control, condition monitoring, communication and the like, as well as hose lines etc., extend through the tower into nacelle and must therefore be positioned in an orderly manner and fixed, in particular in the region hanging out of the nacelle into the tower. To ensure operational reliability, cables and the like in the loops hanging in the tower must be kept at a distance such that they do not rub against one another during rotational movements. In the case of the large number of strand-like functional elements used in modern wind power plants, which functional elements must be accommodated in the strand passageways of a corresponding main body, that main body must have significant dimensions. This requirement regularly results in high manufacturing costs for the manufacturing processes under consideration, such as compression or injection molding of plastics or metal alloys, when manufacturing components of such a large size. 
     SUMMARY OF THE INVENTION 
     Given these difficulties, an object of the invention is to provide an improved mounting system of the type under consideration, which enables low-cost manufacturing. 
     This object is basically achieved according to the invention by a mounting system having a main body formed from at least two sectional elements, which each have strand passageways and which can be coupled to one another at at least one junction point. The receiving axes of successive strand passageways on the main body diverge outward. Because a main body is provided, which is made up of sectional elements, the need to manufacture the main body in the form of a component having large dimensions is eliminated, which in the prior art, make a large tool and correspondingly large injection molding machine necessary. Instead, the use of smaller machine units simplifies and lowers the cost of production. Due to the fact that in addition, the receiving axes of successive strand passageways on the main body diverge outward, the main body has a curved outer form, which form is more favorable for the formation of strand bundles such as those that hang out of the nacelle into the tower, as compared to conventional mounting systems having flat, strip-like main bodies. 
     In particular, the main body may advantageously have the form of a star-shaped body, on which strand passageways are disposed along an imaginary curved line. 
     In the case of such a body having curved peripheral regions, the cover device, which closes the openings of the receiving spaces of the strand passageways, may advantageously also have a tension band as an additional element. The tension band encloses the strand member and forms a safeguard against short-circuit forces that may possibly arise during operation. 
     For the configuration of the star-shaped body, at least two of the sectional elements can be identically formed. For example, the entire star-shaped body is made up of two sectional elements designed as interchangeable parts. 
     Alternatively, a star-shaped body formed out of more than two sectional elements may be provided, in which all sectional elements are identically formed. 
     In terms of the coupling of the sectional elements, at least one attachment point of the sectional elements can be formed as a hinge joint that makes a relative pivotal movement of the sectional elements possible. To form the main body, sectional elements or groups of sectional elements connected to one another can be folded out such that an additional, central receiving space located in the interior of the strand member is created therebetween, in which an additional functional element can be installed. 
     The strand passageways of the sectional elements may advantageously have receiving spaces in the form of trough-like recesses. The cover device has holding members, which can be latched by the appropriate sectional element for the pre-fixation of functional elements that are inserted into the strand passageways at the opening of the respective receiving spaces. This arrangement facilitates the assembly process in that functional elements can be comfortably inserted into the strand passageways in succession and secured there against falling out before the fixing process is finally completed, for example, by the tension band enclosing the holding members. 
     In especially advantageous embodiments, the sectional elements are in the form of quadrants, which can be combined to form a star-shaped body in which the openings of the receiving spaces are located in a circular line that extends along the outer periphery of the star-shaped body. The inner faces of the receiving spaces facing away from the opening of the strand passageways may be delimited by a wall, which extends along a quarter-circle so that the walls delimit a central opening. The central opening forms a receiving space for the installation of an additional functional element. 
     The arrangement may be advantageously made such that an inner insert may be provided that can be accommodated in the central opening for the formation of an additional strand passageway. The inner insert forms at least one additional strand passageway, or one or a plurality of further additional strand passageways. 
     Other objects, advantages and salient features of the present invention will become apparent from the following detailed description, which, taken in conjunction with the annexed drawings, discloses preferred embodiments of the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Referring to the drawings that form a part of this disclosure: 
         FIG. 1  is a side view of a mounting system according to a first exemplary embodiment of the invention, wherein a bundle of three cables is inserted into each of two strand passageways; 
         FIG. 2  is a partial side view of the mounting system of  FIG. 1 , wherein four quadrants forming the main body as a star-shaped body are combined into a pair of sectional elements, shown unfolded at a hinged articulation point; 
         FIG. 3  is a side view of a single quadrant of the mounting system of  FIG. 1 , drawn in a somewhat larger scale; 
         FIG. 4  is a perspective side view of the quadrant shown in  FIG. 3 ; 
         FIG. 5  is a side view of a mounting system according to a second exemplary embodiment of the invention, without strand-like functional elements inserted into the strand passageways; 
         FIG. 6  is a perspective side view of the mounting system of  FIG. 5 ; 
         FIG. 7  is an exploded side view of the sectional elements of  FIG. 5  and two additional sectional elements that can be attached between the sectional elements, drawn in a somewhat smaller scale than in  FIG. 5 , for forming a mounting system according to a third exemplary embodiment of the invention; 
         FIG. 8  is a side view of the sectional elements of  FIG. 5  combined with the two additional sectional elements into a star-shaped body pursuant to the third embodiment of  FIG. 7 ; and 
         FIG. 9  is a side view of the embodiment corresponding to  FIG. 1 , wherein an inner insert is accommodated in the central opening of the star-shaped body. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIG. 1  shows a first embodiment of the invention as a whole, where a main body in the form of a star-shaped body  1  is provided. Along the peripheral regions of body  1  strand passageways  3  in the form of trough-like recesses are formed, in which strand-shaped functional elements  5  that are to be fastened can be inserted. By way of example,  FIG. 1  only shows functional elements inserted into two strand passageways  3 , which elements each comprise a cable bundle  5  comprising three cables. The cable bundles are inserted into the receiving space  7  formed in the strand passageways  3 . As made clear in  FIG. 1 , adapter inserts  9  are inserted into some of the strand passageways  3  to facilitate the fixing of functional elements having different shapes and dimensions, in that the shape and dimension of the respective receiving space  7  is adapted to the requirements. 
       FIGS. 2 to 4  show, in greater detail, the sectional elements  11  formed as carry-over parts, which can be combined into the star-shaped body  1 . In the present example, four sectional elements  11  are provided, each of which have two strand passageways  3  in the form of trough-like recesses with an external opening  13 . The sectional elements  11  are designed such that they are curved, as quadrants of what in the present case is a round star-shaped body  1 . The receiving axes  15 , defined by the receiving spaces  7 , extend from the outer opening  13  to the inner end  17  of the strand passageways  3 , see  FIG. 3 , and diverge to the outside of the sectional element  11 . The sectional elements  11  are laterally defined by walls, which extend from radial planes. Those walls, the sectional elements  11  can be coupled to one another by junction points  21 . The sectional elements  11  are delimited at the inner face thereof facing away from openings  13  of the strand passageways  3  by a wall  23 . Wall  23  extends along a quarter-circle.  FIG. 2  shows that two sectional elements  11  are connected at each of the junction points  21  into a pair comprising two quadrants. Both pairs are pivotably connected to one another at a junction point designed as a hinge joint  25 . 
     When the pairs of quadrants are folded together from the spread pivoted position shown in  FIG. 2  and connected into the closed star-shaped body  1 , a closed central opening  27  is formed, in which an inner insert  29  can be accommodated and can be secured therein by folding together the pairs of quadrants. As shown in  FIG. 9 , inner insert  29  may form additional strand passageways  31 ,  33 ,  35  so that additional strand-like functional elements can be run through the central opening  27 . 
     As can be seen in  FIG. 4  in particular, the junction points  21  are designed such that projections  37  and depressions  39  are formed in the walls  19 . Projections  37  and depressions  39  are disposed to alternate. In the installed state, a kind of toothing is then formed that can absorb the forces. The outer surfaces  41  adjoining the openings  13  of the strand passageways  3  have a curvature that corresponds to a circular arc for a tension band  43  enclosing the star-shaped body  1 . The tension band  43  can be tightened by a turnbuckle  45 . Tabs  47  that project from the surface  41  are located near the walls  19  for the lateral guidance of the tension band  43 . 
     A holding member  49  is provided for the closure of each of the openings  13  of the strand passageways  3 . Each holding member  49  is hinged with a joint fork (not shown in the drawing) at a pivot point  51  at the opening  13  of the appropriate strand passageway  3 . These holding members  49  can then be pivoted out of a pivoting position releasing the opening  13 , into the position shown in  FIGS. 1 and 9 , in which the holding members  49  close the strand passageways  3 . These holding members  49  have latch tongues  53  (which are only partially numbered in  FIGS. 1 and 9 ), with which the holding members  49  can be latched in the closed position for the pre-fixation of functional elements that are inserted into the strand passageways  3 , before the tension band  43  is tightened over the top of the holding members  49 . The holding members  49  have spring-loaded movable pressure members  55 , which are only partially numbered in  FIGS. 1 and 9  and exert a holding force on the functional elements such as cables or cable bundles  5  that are inserted in the strand passageways  3 . A mounting system is thereby implemented, in which the respective star-shaped body  1  serves in the manner of a spacer for a loop of cables and/or lines forming loops, hanging out of the nacelle into the tower, thereby preventing the cables or lines from rubbing against one another during rotational movements. In addition, the cables or lines can be reliably guided and secured by the mounting system even within the segment-like tower structure, which represents a substantial facilitation in the installation of such towers. 
       FIGS. 5 and 6  show an embodiment in which the star-shaped body  1  is formed out of two identically designed sectional elements  12 . Each sectional element  12  has two strand passageways  3  that, like the other components of these sectional elements  12 , are designed in the same manner as the sectional elements  11  of the preceding example. The difference lies in the fact that, unlike the quadrants in the preceding example, the sectional elements  12  do not form a complete star when they are coupled to one another. Instead, free spaces  57  are formed between the sectional elements  12 . The sectional elements  12  are connected at junction points  21  designed, as in the first embodiment, by screws that are screwed into the material of the sectional elements  12 , as is also the case in the first embodiment. In the case of the second embodiment in  FIGS. 5 and 6 , only the junction points  21  that are adjacent to the inner wall  23  junction points  21  are used. Just as in the first embodiment, pivotable holding members  49  are hinged at the openings of the strand passageways  3 , which holding members can be latched in the closed position. As in the first embodiment, a tension band  43  is passed over the top of the holding members  49 . 
       FIGS. 7 and 8  illustrate a further embodiment in the form of a further development of the example pursuant to  FIGS. 5 and 6  described above. Additional elements  59  are provided for the formation of two additional strand passageways  3 , which can be used in the free spaces  57  between the sectional elements  12  and, by the junction points  21 , can be fixed thereto. Each of the additional elements  59  forms a strand passageway  3  and, together with the sectional elements  12 , form a star-shaped body  1  having a slightly oval outer contour. 
     With the above mentioned sectional elements being designed as identical components, different configurations can therefore be produced at strand passageways, for example such as a configuration according to  FIGS. 1 and 2  or such as a configuration according to  FIGS. 5 and 6 . If the above described sectional elements are designed such that they are smaller, so that these elements only cover an arc segment of 10° to 45°, preferably of approximately 30°, it will be possible to achieve a greater modular variance and to implement different fixing systems (not shown) with a plurality of sectional elements, in the manner of a modular system. 
     While various embodiments have been chosen to illustrate the invention, it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention as defined in the claims.