DE102013203987B4 - Kit and load-bearing structure - Google Patents

Abstract

A kit comprising a plurality of power transmission elements, each comprising: - a tubular or rod-shaped member (108) for transmitting forces and / or moments, and - a connecting portion (110) for connecting the power transmission member (104) to connecting portions (110) of others Power transmission elements (104), wherein the connecting portion (110) is a sector (114) of a closed structure (112), wherein the closed structure (112) is obtainable by connecting the connecting portions (110) of the force transmission elements (104), wherein the closed structure (112) is an at least approximately annular, spherical or cylindrical closed structure (112), wherein the sector (114) at least approximately a circular cutout or a ring-shaped longitudinal section, wherein the force transmission elements (104) by means of the connecting portions (110) are connected to each other, so that the closed structure (112) is obtainable, wherein the kit (102) comprises at least one fastening element (134) by means of which several sectors (114) can be fixed relative to one another, wherein at least one fastening element (134) forms part of a cladding or planking (146). is and / or is connectable or connectable to a portion of a cladding or paneling (146), such that, by the placement of such a fastener (134), a cladding or paneling (146) may be formed on a supporting structure (104) to be formed by the force transmission members (104). 100) can be arranged.

Description

The present invention relates to a kit comprising a power transmission element for transmitting forces and / or moments.

For example, from the CH 483 819 a node element is known, by means of which a plurality of force transmission elements can be connected to one another. The node element is a cylindrical body, which recesses (chambers) for receiving complementary to these recesses formed portions of the power transmission elements comprises.

The DE 197 26 469 A1 , the EP 1 491 774 A1 and the DE 10 2009 011 089 A1 disclose various power transmission elements for the production of load-bearing structures.

The present invention has for its object to provide a kit which simple and stable interconnectable force transmission elements for producing a supporting structure including a planking or cladding thereof.

This object is achieved by a kit according to claim 1.

The fact that the force transmission element comprises a connection section for connection to connection sections of further force transmission elements is a separate node element, in particular as shown in FIG CH 483 819 known, dispensable.

Preferably, the closed structure obtainable by connecting the connecting portions of the power transmission members is formed solely of the connecting portions of the power transmission members and / or of filler members.

Filling elements are in particular sectors of the closed structure, which at least approximately have a shape corresponding to the connecting sections of the force transmission elements, but have no tubular or rod-shaped element.

Preferably, all connecting portions and filling members which are joined together to obtain the closed structure are sectors of the closed structure.

The closed structure is in particular a closed connection structure.

In the assembled state, the closed structure is in particular a node element, by means of which two or more tubular or rod-shaped elements are interconnected.

The connecting sections and / or the one or more filling elements are, for example, detachably connectable to one another. For this purpose, for example, a screw connection, a latching connection and / or a clamping connection can be provided.

Alternatively, it can be provided that the connecting portions of the power transmission elements and / or the one or more filling elements are permanently connected to one another. In particular, a welded connection, an adhesive connection and / or a riveted connection can be provided for this purpose.

To produce the closed structure, preferably no intermediate piece, in particular no central element, is provided by means of which the connecting portions of the force transmission elements and / or the one or more filling elements can be connected to one another. Rather, the connecting portions and / or the one or more filling elements in the assembled state, in which the closed structure is formed, preferably directly to each other.

According to the invention, it is provided that the closed structure is an at least approximately annular, spherical or cylindrical closed structure.

It is further provided that the closed structure is an at least approximately hollow spherical or hollow cylindrical closed structure.

The sectors of the closed structure, in particular the connecting portions and / or one or more filling elements, preferably form part of the closed structure, much like cake pieces are pieces of a whole cake.

It may be favorable if the sector has at least approximately a circular-section-shaped or a ring-shaped longitudinal section.

In particular, in this case, a longitudinal section through the sector taken parallel to a longitudinal direction of the tubular or rod-shaped element can have a circular cutout shape or a ring cutout shape.

A circular section is to be understood in particular as a partial area of a circular area which is delimited by a circular arc and two circular radii.

Under a ring cutout is in particular a partial surface of an annular surface to understand, which is bounded by a ring inside, a ring outside and two ring radii.

In particular, it can be provided that the sector has at least approximately a circular ring-shaped longitudinal section.

A circular ring cutout is to be understood in particular as a partial surface of a circular ring surface which is delimited by two circular arcs and two circular radii.

Preferably, a plurality of connecting sections and / or one or more filling elements, in particular three or four connecting sections, can be connected to a closed structure, in particular to a closed ring structure, cylindrical structure or ball structure, in particular supplemented.

It can be provided that the closed structure is obtainable by connecting the sector of the force transmission element with substantially identically constructed or identical sectors of further force transmission elements.

In one embodiment of the invention, it is provided that the sector comprises side surfaces which, in the mounted state of the force transmission element, adjoin, in particular abut against side surfaces of sectors of adjacent force transmission elements, the side surfaces of the sector preferably being arranged transversely, for example perpendicular, to one another.

Furthermore, it can be provided that the side surfaces of the sector form an angle of at least approximately 20 °, for example at least approximately 40 °, in particular approximately 45 °, with one another.

Preferably, the side surfaces of the sector include an angle of at most about 120 °, preferably at most about 95 °, for example, about 90 ° with each other.

It may be provided that the sector comprises side surfaces which, in the installed state of the force transmission element, adjoin, in particular abut, side surfaces of sectors of adjacent force transmission elements, at least one side surface lying in a plane in which a center, in particular an axis of symmetry, is the closed one Structure is.

It may be favorable if both side surfaces of the sector lie in planes in which a center, in particular an axis of symmetry, of the closed structure lies.

In particular, it can be provided that the planes in which the side surfaces lie intersect at the center of the closed structure, in particular such that a line of intersection of the two planes is the symmetry axis of the closed structure.

Preferably, the closed structure is obtainable, in particular composable, exclusively from connecting sections, which are sectors of the closed structure, and / or from one or more filling elements, which are sectors of the closed structure.

It may be favorable if the connecting portion, which is a sector of the closed structure, comprises a recess and / or a recess, so that the connecting portion in the mounted state of the force transmission element, in particular in the mounted state of the closed structure, preferably not up to a Center of the closed structure extends.

Preferably, the closed structure in the assembled state thereof comprises a cavity in which the center of the closed structure is arranged.

The power transmission element is used in a kit comprising a plurality of power transmission elements.

The kit according to the invention preferably has one or more of the features and / or advantages described in connection with the force transmission element.

Preferably, one or more, in particular all, of the power transmission elements of the kit have one or more of the features and / or advantages described in connection with the power transmission element.

The kit further preferably comprises one or more filling elements, that is, one or more sectors of the closed structure to which no tubular or rod-shaped element is arranged.

In one embodiment of the invention, it is provided that the sectors of Power transmission elements, by means of which the closed structure is available, in the assembled state together include a total angle of 360 °.

It may be favorable if each sector includes an angle component of the total angle.

A ratio between the angle portions of each two sectors is preferably integer, in particular one, two or three.

It may be favorable if each sector includes an angle component of the total angle, wherein the angle component of all sectors of the closed structure is identical. Preferably, an angle portion of the individual sector at the total angle then results by dividing the total angle of 360 ° by the number of sectors.

According to the invention, it is provided that the kit comprises at least one fastening element, by means of which a plurality of sectors can be fixed relative to each other.

It may be favorable if at least one fastening element comprises a positioning device, by means of which several sectors in a desired position relative to each other are positioned, in particular relative to each other are displaceable.

At least one fastening element is part of a cladding or planking and / or connected or connectable to a portion of a cladding or planking.

By arranging such a fastening element, preferably at the same time as the sectors are fixed relative to one another, a cladding or planking can be arranged on a supporting structure to be formed or formed by means of the force transmission elements.

The kit of the invention and / or one or more power transmission elements are particularly suitable for producing a supporting structure, in particular a supporting structure of a vehicle, for example a rail vehicle.

The present invention relates to a supporting structure comprising a plurality of power transmission elements, wherein the power transmission elements are connected to each other by means of the connecting portions, so that the closed structure is formed.

The load-bearing structure according to the invention preferably has one or more of the features and / or advantages described in connection with the force transmission element and / or in connection with the kit according to the invention.

Furthermore, the force transmission element, the kit according to the invention and / or the supporting structure according to the invention can have one or more of the following features and / or advantages:
The closed structure is preferably a self-supporting closed structure, in particular a self-supporting node element.

Preferably occurring loads can be absorbed and / or forwarded by a targeted division of the load paths and / or a uniform surface pressure.

For example, the sectors of the closed structure can be connected to one another with little heat by means of gluing.

For example, by means of a fastener may preferably be provided with each other, in particular additional, screwing the sectors.

At least one fastening element preferably has at least one inclined surface, in particular a wedge-shaped relief. By means of such a fastener, a bias may preferably be applied to the sectors in order to produce, for example, an adhesive bond simply and reliably.

Preferably, a high degree of functional integration is provided, in particular by the possibility of connecting a planking or cladding, for example to a fastening element and / or to the closed structure.

In particular, for rail vehicles can be provided by the use of power transmission elements for the production of closed structures, a stable supporting structure, in particular a stable structure.

By using power transmission elements, a supporting structure can be made from a plurality of substantially identical elements. In this way, the benefits of mass production can be used for small batches. In particular, for the production of supporting structures for small batches it is possible to make use of power transmission elements which can be produced in large numbers and are thus favorable.

Preferably, the force transmission elements have a power flow optimized design, especially to avoid unnecessary voltage peaks. As a result, a service life of a supporting structure produced by means of such force transmission elements can be increased.

By means of the kit according to the invention, a multiplicity of different closed structures, in particular different node variants, can preferably be formed.

By a material-saving design of the power transmission elements can be preferably contributed to the weight reduction.

According to the invention, a load-bearing structure can be formed from a multiplicity of structurally identical force-transmitting elements.

Preferably, the force transmission element in the region of the connecting portion has a perpendicular to the connecting direction taken larger cross-section than in the region of the tubular or rod-shaped element.

The power transmission element may in particular be formed as a cast component or manufactured by hydroforming (IHU).

It can be provided that the connecting portion and / or the tubular or rod-shaped element are produced in an extrusion molding process.

The power transmission element may comprise, for example, aluminum or steel or be formed of aluminum or steel.

The tubular or rod-shaped element and the connecting portion of the force transmission element are preferably formed integrally with each other.

Alternatively, it may be provided that the tubular or rod-shaped element and the connecting portion of the force transmission element are positively and / or materially connected to each other.

It may be beneficial if tips of the sectors are rounded concave. Thus, in the assembled state of the closed structure, for example, a circular central hole is provided in the closed structure.

By means of a connecting portion, force introduced in the connecting direction of the force transmission element is preferably forwarded arcuately to adjacent connecting sections, in particular adjacent sectors of the closed structure.

At least one fastening element is preferably designed as a cover, in particular as a cover, by means of which the closed structure can be covered in a transverse direction perpendicular to at least one connecting direction.

It can be provided that the force transmission element, in particular a connecting portion of the force transmission element, comprises a cavity.

In the assembled state of the closed structure, in particular during assembly of the closed structure, such a cavity can be filled, for example, filled, in particular, with structural foam.

At least one fastening element, in particular a cover, for example a cover, can be provided with one or more stiffening ribs. Such a stiffening rib or such stiffening ribs are preferably formed according to the loads of the closed structure in the assembled state thereof.

Preferably, different variants of closed structures can be formed by means of the kit. In particular, the different variants of the closed structure can be produced by means of the same assembly method only using other variants of power transmission elements, in particular other variants of sectors.

The power transmission element, the kit of the invention and / or the supporting structure according to the invention can be used in particular for the production of rail vehicles, aircraft, watercraft or other land vehicles, such as road vehicles such as buses or trucks. Furthermore, the power transmission element, the kit according to the invention and / or the supporting structure according to the invention can be used in structural engineering.

Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

In the drawings show:

1 a schematic perspective view of a first embodiment of a supporting structure comprising three power transmission elements and a filling element, which together form a closed structure;

2 a schematic perspective view of a power transmission element of the supporting structure 1 ;

3 a schematic perspective view of the supporting structure 1 wherein the closed structure is provided with covers;

4 a schematic representation of a cover in 3 forming fastener;

5 one of the 3 corresponding schematic perspective view of a second embodiment of a supporting structure, wherein a fastening element is provided with a planking;

6 a schematic perspective view of the provided with a planking fastener 5 ;

7 one of the 1 corresponding schematic perspective view of a third embodiment of a supporting structure, wherein three force transmission elements together form a closed structure;

8th a schematic perspective view of a fourth embodiment of a supporting structure in which a plurality of different power transmission elements are provided for forming the supporting structure; and

9 one of the 8th corresponding, partially sectional view of the fourth embodiment of the supporting structure.

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

One in the 1 to 4 illustrated first embodiment of a whole as 100 For example, the designated supporting structure is a supporting structure 100 a rail vehicle and in particular formed like a scaffold.

The supporting structure 100 For example, by means of a kit 102 be formed, with the kit 102 several power transmission elements 104 and / or one or more filling elements 106 includes.

In particular 2 can be seen, include the power transmission elements 104 each a tubular or rod-shaped element 108 , For example, a square tube, and a connecting portion 110 ,

The connecting section 110 allows the power transmission elements 104 easy and stable to connect with each other.

In the assembled state of the load-bearing structure 100 is by means of the connecting sections 110 the power transmission elements 104 and by means of the filling element 106 a substantially annular closed structure 112 educated.

The connecting sections 110 and the filling element 106 form sectors 114 the closed structure 112 ,

Every sector 114 the closed structure 112 is part of the closed structure 112 which includes an angle portion of a total angle.

As a closed structure 112 this has a total angle of 360 °.

In the in the 1 to 4 illustrated first embodiment of the supporting structure 100 assign the sectors 114 an angle of 90 ° each. By means of the four sectors 114 namely the three sectors 114 the power transmission elements 104 and the sector 114 of the filling element 106 Thus, the total angle of 360 ° is included.

The sectors 114 thus essentially correspond to the cake pieces of the closed structure 112 forming cake.

As 2 can also be seen, the connecting portion 110 of each power transmission element 104 and also the filling element 106 two side surfaces each 116 on, by means of which the sectors 114 in the assembled state adjacent to each other, in particular abut each other.

The side surfaces 116 are arranged in planes, which are in an axis of symmetry 118 the closed structure 112 to cut.

The sectors 114 preferably have on one of the axis of symmetry 118 facing inside 120 one recess each 122 or recess 124 on. In this way, a juxtaposition of the sectors 114 in the area of the axis of symmetry 118 in the assembled state of the supporting structure 100 be prevented. For example, due to manufacturing tolerances shape deviations of the sectors 114 of a predetermined desired shape thereby lead to preferably no or at least negligible impairment in the assembly of the supporting structure 100 ,

By means of the recess 122 or the recess 124 is in the assembled state of closed structure 112 a cavity 126 in the closed structure 112 educated.

In this cavity 126 is in particular a center point 128 the closed structure 112 arranged.

Every sector 114 preferably has an arc shape, in particular a circular arc shape on.

By means of the tubular or rod-shaped element 108 especially in a connection direction 130 to transmit a force.

By suitable design of the closed structure 112 can the tubular or rod-shaped element 108 and thus the entire supporting structure 100 in a direction perpendicular to the direction of connection 130 aligned transverse direction 132 be stabilized.

The sectors 114 , in particular the connecting sections 110 the power transmission elements 104 , project for this purpose preferably in the transverse direction 132 over the tubular or rod-shaped elements 108 the power transmission elements 104 out. This allows a particularly stable closed structure 112 be formed.

In particular 1 it can be seen are the sectors 114 in particular for weight saving, preferably hollow. In (not shown) embodiments of the supporting structure 100 can be provided that these hollow sectors 114 and / or the cavity 126 the closed structure 112 for additional stability increase, for example by means of a structural foam filled.

In particular 3 can be seen, the closed structure 112 by means of fastening elements 134 and screw connections 136 , in particular solvable, be set.

Two, in particular substantially identically formed, fastening elements 134 be this on opposite sides of the closed structure 112 forming sectors 114 mounted and by means of several screw connections 136 established. The sectors 114 and thus also the power transmission elements 104 and the filling element 106 are thus set relative to each other.

The fasteners 134 form in particular a cover 138 for the hollow sectors 114 and / or the cavity 126 the closed structure 112 ,

In particular 4 can be seen, comprises a fastener 134 preferably a positioning device 140 which has several bevels 142 includes.

By means of the positioning device 140 , in particular by means of the inclined surfaces 142 preferably the sectors 114 be positioned relative to each other, in particular by tightening the screw 136 ,

In an alternative embodiment (not shown) it can be provided that the positioning device 140 , in particular the inclined surfaces 142 , at the sectors 114 is trained.

4 Finally, it can be seen that the fastener 134 Through openings 144 for the screw connections 136 includes.

The in the 1 to 4 illustrated first embodiment of the supporting structure 100 can be made as follows:
Depending on the desired shape of the supporting structure 100 and the desired number of struts of the supporting structure 100 be out of the kit 102 different power transmission elements 104 and filling elements 106 selected.

The power transmission elements 104 and the filling elements 106 are chosen so that a sum of the angular proportions of the sectors 114 for each interface between the power transmission elements 104 360 ° results.

The sectors 114 be by means of the side surfaces 116 attached to each other to the closed structure 112 to build. Subsequently, two fasteners 134 on the closed structure 112 put on and the closed structure 112 by means of the screw connections 136 and the positioning device 140 fixed in a desired position.

In this desired position, the power transmission elements 104 and the filling element 106 now firmly connected to each other, so that by means of the tubular or rod-shaped elements 108 and the closed structure 112 Forces in the connection direction 130 and / or in the transverse direction 132 can be transmitted.

The supporting structure 100 is through the closed structure 112 particularly stable.

One in the 5 and 6 illustrated second embodiment of a supporting structure 100 is different from the one in the 1 to 4 shown in the first embodiment Essentially in that a fastener 134 with a planking 146 is provided.

Such a planking 146 In particular, a part of an outer shell of a vehicle may be the supporting structure 100 includes, form.

This, that the fastener 134 directly with the planking 146 connected, can the planking 146 particularly simple and stable with the supporting structure 100 or even a component of the load-bearing structure 100 form.

Incidentally, the right in the 5 and 6 illustrated second embodiment of the supporting structure 100 in terms of structure and function with in the 1 to 4 illustrated first embodiment, so that reference is made to the above description in this respect.

An in 7 illustrated third embodiment of a supporting structure 100 is different from the one in the 1 to 4 illustrated first embodiment essentially in that the force transmission elements 104 connecting sections 110 include, which include an angle of 120 ° each. The closed structure 112 is thus at the in 7 illustrated third embodiment already by means of three sectors 114 that is, by means of the three connecting sections 110 the power transmission elements 104 formed, as already by means of the three sectors 114 the total angle of 360 ° is reached.

recesses 122 or recesses 124 are in the sectors 114 the power transmission elements 104 according to the in 7 illustrated third embodiment of the supporting structure 100 not provided. As a result, a better power transmission can be made possible. At the same time, however, the requirement for manufacturing accuracy is higher, around the power transmission elements 104 to be able to connect with each other accurately.

At the in 7 illustrated third embodiment of the supporting structure 100 is also provided that the tubular or rod-shaped elements 108 not integral with the connecting sections 110 are formed.

Rather, the tubular or rod-shaped elements 108 with the connecting sections 110 connected. The connection can be solvable, for example. Preferably, however, a welded connection is provided in order to ensure reliable power transmission by means of the force transmission elements 104 to enable.

Incidentally, the in 7 illustrated third embodiment of the supporting structure 100 in terms of structure and function with in the 1 to 4 illustrated first embodiment, so that reference is made to the above description in this respect.

One in the 8th and 9 illustrated fourth embodiment of the supporting structure 100 is different from the one in the 1 to 4 illustrated first embodiment essentially in that the sectors 114 which the closed structure 112 form, have different dimensions from each other.

Like that 8th and 9 can be seen, thereby supporting structures 100 manufacture, in which the tubular or rod-shaped elements 108 include (almost) any angle with each other.

It may also be advantageous if one or more walls, in particular side walls, and / or one or more side surfaces of the tubular or rod-shaped element 108 at least partially flush in the adjoining walls or side surfaces of the connecting portion 100 pass.

The dimensions of the tubular or rod-shaped element 108 correspond in a transitional section preferably the dimensions of the adjoining connecting portion 110 , Preferably, cracks and steps between the tubular or rod-shaped element 108 and the connection section 110 avoided.

This can allow a power flow and torque-effective transmission of loads.

Incidentally, the right in the 8th and 9 illustrated fourth embodiment of the supporting structure 100 in terms of structure and function with in the 1 to 4 illustrated first embodiment, so that reference is made to the above description in this respect.

Characterized in that in all embodiments of the supporting structure 100 Power transmission elements 104 with sectors 114 are provided, by means of which a closed structure 112 can be formed, the supporting structure 100 be easily manufactured with a variety of similar components.

LIST OF REFERENCE NUMBERS

100

carrying structure

102

kit

104

Power transmission element

106

filler

108

tubular or rod-shaped element

110

connecting portion

112

closed structure

114

sector

116

side surface

118

axis of symmetry

120

inside

122

recess

124

recess

126

cavity

128

Focus

130

connection direction

132

transversely

134

fastener

136

screw

138

cover

140

positioning

142

sloping surface

144

Through openings

146

planking

Claims (11)

Kit comprising a plurality of power transmission elements, each comprising: - a tubular or rod-shaped element ( 108 ) for the transmission of forces and / or moments and - a connecting section ( 110 ) for connecting the power transmission element ( 104 ) with connecting sections ( 110 ) of further power transmission elements ( 104 ), wherein the connecting section ( 110 ) a sector ( 114 ) of a closed structure ( 112 ), the closed structure ( 112 ) by connecting the connecting sections ( 110 ) of the power transmission elements ( 104 ), the closed structure ( 112 ) an at least approximately annular, spherical or cylindrical closed structure ( 112 ), the sector ( 114 ) has at least approximately a circular-section-shaped or a ring-shaped longitudinal section, wherein the force transmission elements ( 104 ) by means of the connecting sections ( 110 ) are connectable to each other so that the closed structure ( 112 ), the kit ( 102 ) at least one fastening element ( 134 ), by means of which several sectors ( 114 ) are fixable relative to each other, wherein at least one fastening element ( 134 ) Part of a cladding or planking ( 146 ) and / or with a section of a cladding or planking ( 146 ) is connected or connectable, so that by the arrangement of such a fastener ( 134 ) a cladding or planking ( 146 ) at one by means of the force transmission elements ( 104 ) to be formed supporting structure ( 100 ) can be arranged. Kit according to claim 1, characterized in that the closed structure ( 112 ) by connecting the sector ( 114 ) of the power transmission element ( 104 ) with essentially identical or identical sectors ( 114 ) further power transmission elements ( 104 ) is available. Kit according to one of claims 1 or 2, characterized in that the sector ( 114 ) Side surfaces ( 116 ), which in the assembled state of the power transmission element ( 104 ) on side surfaces ( 116 ) of sectors ( 114 ) of adjacent power transmission elements ( 104 ), the side surfaces ( 116 ) of the sector ( 114 ) are arranged transversely to each other. Kit according to one of claims 1 to 3, characterized in that the sector ( 114 ) Side surfaces ( 116 ), which in the assembled state of the power transmission element ( 104 ) on side surfaces ( 116 ) of sectors ( 114 ) of adjacent power transmission elements ( 104 ), wherein at least one side surface ( 116 ) lies in a plane in which a midpoint ( 128 ), in particular an axis of symmetry ( 118 ), the closed structure ( 112 ) lies. Kit according to one of claims 1 to 4, characterized in that the closed structure ( 112 ) exclusively from connecting sections ( 110 ), which sectors ( 114 ) of the closed structure ( 112 ), obtainable, in particular composable, is. Kit according to one of claims 1 to 5, characterized in that the connecting portion ( 110 ), which is a sector ( 114 ) of the closed structure ( 112 ) is a recess ( 122 ) and / or recess ( 124 ), so that the connecting portion ( 110 ) in the assembled state of the power transmission element ( 104 ) not to a midpoint ( 128 ) of the closed structure ( 112 ). Kit according to one of claims 1 to 6, characterized in that the sectors ( 114 ) of the power transmission elements ( 104 ), by means of which the closed structure ( 112 ), when assembled together include a total angle of 360 °. Kit according to claim 7, characterized in that each sector ( 114 ) an angle component of the total angle, where a ratio between the angular proportions of each two sectors ( 114 ) is integer. Kit according to one of claims 7 or 8, characterized in that each sector ( 114 ) includes an angle portion of the total angle, the angle portion of all sectors ( 114 ) of the closed structure ( 112 ) is identical. Kit according to one of claims 1 to 9, characterized in that at least one fastening element ( 134 ) a positioning device ( 140 ) by means of which several sectors ( 114 ) are positionable in a desired position relative to each other. A supporting structure made of a kit according to any one of claims 1 to 10.

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