Support for transporting and / or storing building elements for building rotor blades of wind turbines

Abstract

A cradle for transporting and / or storing building elements for building a rotor blade of a wind turbine. A support for transporting and / or storing building elements (2) for building rotor blades of a wind turbine, where the support (1) comprises a retaining structure (3) and several retaining arms (6) attached or attachable to the retaining structure (3), where the retaining arms (6) are arranged offset in several rows when in a retaining position in which they are arranged offset in several rows. The holding arms protrude from the holding structures (3) in the storage spaces (8) of the support (1), the holding arms (6) arranged in each row form a respective receiving plane (7) in order to receive at least one construction element (2) extending over at least several holding arms (6) of the row, at least two vertically staggered receiving planes (7) are formed, and the holding arms (6) are arranged in the receiving planes (7) in order to receive at least one construction element (2) extending over at least several holding arms (6) of the row. At least one of the holding arms (6) forming the upper receiving plane (7) can be moved from a holding position into a non-holding position, in which the respective holding arm (6) is moved out of the storage space (8) above the receiving plane (7) below the upper receiving plane (7), and vice versa.

Description

Technical Field

[0001] The invention relates to a stand for transporting and / or storing building elements for building a rotor blade for a wind turbine. Background Art

[0002] A wind turbine often comprises a rotor with a plurality of rotor blades, which are usually used to convert wind energy into electrical energy by means of a generator. Due to the huge size of wind turbine blades, their manufacture is a major challenge for manufacturers of wind turbines. Conventionally, wind turbine blades are made of fiber-reinforced materials such as fiber mats, which involve the processing of large parts, in particular for casting the outer shell of the wind turbine blade. A wind turbine blade can be assembled using a plurality of such fiber mats as well as other components, such as rigid core elements. Additionally or alternatively, precast blade sections can also be used.

[0003] One technique for facilitating the production of wind turbine blades is the use of preformed building elements or preforms, which are preformed smaller blade parts or blade segments, respectively, in particular for building corresponding blade shells. These preformed building elements are prefabricated individually and then arranged and aligned in a blade mould according to the required geometry of the blade to be manufactured. The preformed building elements can be arranged in a blade mould in order to cast a whole rotor blade or a larger rotor blade part.

[0004] The preformed building element comprises, for example, a plurality of fiber mats and / or core materials, which are locally attached to each other in order to allow their mutual handling, thereby facilitating the arrangement of the components in the blade mold. The core material may be, for example, a flexible or rigid tropical balsa wood board. The flexible tropical balsa wood board may be cut with a knife or sawn into small pieces, which may be held together by one or more fiberglass meshes, wherein the tropical balsa wood pieces are glued to the fiberglass meshes. When casting the wind turbine blade, the preformed building element may be impregnated with resin, thereby forming, for example, a shell of a rotor blade to be manufactured. Thus, the components of the preformed building element are only locally bonded and / or held together using an adhesive that is soluble in the resin, so that during casting of the blade, resin injection, in particular injection into the fiber-based components of the preformed building element, is not hindered.

[0005] The preformed building element may be made in a preformed mould for arranging and locally attaching parts of the preformed building element. It is possible that the preformed building element is covered, for example, under a vacuum foil and / or in a vacuum bag to stabilize the stack of materials constituting the preformed building element.

[0006] The preformed building elements have to be lifted from the preform mould, for example by a lifting yoke suspended on a rope of a crane, and transported to the blade mould or to an intermediate storage location. For transporting building elements like preformed building elements, a carrying frame or a trolley may be used. Summary of the invention

[0007] The object of the present invention is to provide an improved concept for transporting and / or storing corresponding building elements.

[0008] According to the invention, this problem is solved by a bracket as initially described, wherein the bracket comprises a retaining structure and several retaining arms attached or attachable to the retaining structure, wherein the retaining arms are offset and arranged in several rows when they are in a retaining position, in which the retaining arms protrude from the retaining structure in a storage space of the bracket, wherein the retaining arms arranged in each row construct a corresponding receiving plane for receiving at least one building element extending on at least several of the retaining arms in the row, wherein at least two vertically staggered receiving planes are constructed, wherein at least one of the retaining arms constructing the upper receiving plane can be moved from the retaining position to a non-holding position, in which the corresponding retaining arm is moved out of the storage space above the receiving plane below the upper receiving plane, and vice versa.

[0009] The invention is based on the idea that a receiving plane of a support can be used to store several building elements stacked on top of each other. Since the holding arms can be moved into a non-holding position in which they are not located in the storage space, the receiving plane below these holding arms is freely accessible from above so that a lifting or hoisting device such as a crane can place building elements on this receiving plane or lift building elements from this receiving plane.

[0010] Thus, for loading the rack, all holding arms except the holding arm that constructs the lowest receiving plane can be in the non-holding position. One building element or several building elements can be placed on the lowest receiving plane from above. Thereafter, the holding arms that construct the receiving plane above the lowest receiving plane can be moved to the holding position. Another building element or further building elements can be placed on the second lower receiving plane from above. This can be continued until the rack is completely loaded. For unloading the rack, this process can be performed in reverse order. In addition to loading the rack from above, the rack can also be loaded or unloaded from the side (e.g. by a forklift) when the holding arms are in the holding position.

[0011] The receiving plane thus creates the positive effect that the rack according to the invention can be used to transport or store several building elements simultaneously, while the movability of the retaining arms allows easy loading and unloading of the rack from above.

[0012] The support may comprise a rectangular shape, i.e. the shape of an elongated cuboid. The holding structure may extend along the vertical sides of the cuboid. Typically, the holding structure may extend along a vertical plane on which the holding arms are arranged or attached. The storage space may be a space beside the holding structure. The holding arms in the holding position and thus the building elements stored in the support are located in the storage space.

[0013] The holding arm may have an elongated structure following a straight line or a curved line. The holding arm in the holding position may protrude preferably vertically from the holding structure. The holding arm in the non-holding position may be located within the holding structure or in a plane constituted by the holding structure. The holding arm may be made of metal, in particular steel, or any other suitable material, such as fiber reinforced plastic or the like.

[0014] In particular, the holding arms are arranged in a number of rows in relation to the holding structure or the plane formed by the holding structure. Each row forms one of the receiving planes for building elements. Each row or each receiving plane is respectively realized by at least two holding arms. Thus, building elements stored in a specific receiving plane can be placed on at least two holding arms forming this receiving plane.

[0015] Preferably, the holding arms are arranged in several horizontal rows. Thus, the respective rows can be shaped straight and preferably horizontal. However, a row can also be curved or curvilinear if it comprises at least three holding arms arranged at different vertical positions. Such a row is advantageous if the building elements to be stored in the receiving plane are also curved. In this case, the shape of the row or the receiving plane can correspond to or be equal to the shape of the building elements that should be stored in the receiving plane.

[0016] In particular, in relation to the holding structure or the plane formed by the holding structure, the holding arms may be arranged in several vertical rows when the holding arms are in the holding position. In this embodiment, the holding arms may be attached to the vertical beams of the holding structure.

[0017] At least one of the retaining arms may be moved from the retaining position to the non-retaining position and vice versa by pivoting about an axis, in particular a mainly vertical axis.The retaining arm may be attached to the retaining structure by a hinge.

[0018] At least one of the holding arms may comprise at least two different, in particular differently shaped, surfaces, wherein the holding arm may be moved from a first position to a second position by rotation about an axis, in particular a horizontal axis, wherein the first surface constitutes a support area for the building element when the holding arm is in the first position and the second surface constitutes a support area when the holding arm is in the second position. The support area is the part of the holding arm on which the building element rests when the building element is stored in the holder. If the holding arm is in the first position, the first surface may point upwards and the second surface may point downwards, and if the holding arm is in the second position, the first surface may point downwards and the second surface may point upwards. The first surface and the second surface may be curved such that one of the surfaces constitutes a concave surface and the other surface constitutes a convex support area. In particular, the holding arm must be detached from the holding structure in order to move it from the first position to the second position and vice versa.

[0019] Preferably, several exchangeable holding arms are provided, in particular comprising differently shaped holding areas for building elements, wherein the holding arms are detachably attached to the holding structure. In this embodiment, the support constitutes a kit comprising the holding structure and several different holding arms attachable to and detachable from the holding structure. In particular, the shape of the holding arms currently attached to the holding structure may correspond to the shape of the building element currently being stored or transported.

[0020] In addition to the shape of the receiving plane, the number of retaining arms may also vary, in particular depending on the weight, length, thickness and / or geometry of the building element that should be stored in the holder. In particular, if a building element is of a very stiff nature compared to less stiff building elements, fewer retaining arms may be required to reliably store this building element.

[0021] The retaining arms detachable from the retaining structure may each include a mounting insert, wherein the retaining structure includes a socket, wherein each mounting insert is insertable into one of the sockets in order to attach the retaining arm to the retaining structure. The socket may include an upwardly directed opening so that the mounting insert can be inserted into the socket from above.

[0022] The socket or its receiving space, respectively, and the mounting insert may be rectangular in shape. The mounting insert may be a mounting plate. The socket may be pivotally attached (e.g. by a hinge) to the retaining structure, so that by pivoting the socket together with the retaining arm, the retaining arm may be moved from the retaining position to the non-retaining position, and vice versa.

[0023] Alternatively, the socket or its receiving space may be cylindrical and the mounting insert may be a cylindrical stud, wherein the socket and the stud constitute a hinge in order to move the retaining arm from the retaining position to the non-retaining position and vice versa.

[0024] The holding arms may consist of one element or component or may consist of several elements or components. Preferably, at least one of the holding arms comprises mounting means and supporting means, which are attached or attachable to the mounting means and constitute a flexible supporting area for the building element. In this embodiment, the supporting means constitute an elastic part of the holding arm, so that building elements of different shapes can be placed in the respective receiving plane without having to replace the respective holding arm. The mounting means may be a frame, in particular a frame made of steel.

[0025] At least a part of the support means may be made of an elastic material, such as polyurethane foam. Alternatively, the support means may comprise a (particularly loose) carrying strap or carrying wire. The strap may be loose and / or elastic. The strap may be made of a braided material. The strap or wire may be made of polyester. The strap or wire may be attached to the mounting means at its longitudinal ends.

[0026] Preferably, at least one of the holding arms comprises a mounting device, wherein a plurality of different, in particular differently shaped, supporting devices are provided, which can be detachably connected to the mounting device. In this embodiment, the mounting device and the supporting device form a kit for constructing holding arms of different shapes. The supporting device can be an insert, which can be inserted, in particular from above, into the corresponding mounting device or the holding frame, respectively.

[0027] The length of at least one of the holding arms or the mounting device of at least one of the holding arms can be adjusted. The respective holding arm or the mounting device of the respective holding arm can be extended telescopically. Thus, the holding arm can be widened or narrowed as required. In particular, different support devices with different lengths can be provided, wherein the length of the mounting device can be adapted to the length of the support device that is currently to be used.

[0028] If the support means is the or a carrying strap, the strap may be elastic so that it can be used for holding arms or mounting means of different lengths, respectively. Additionally or alternatively, the slack of the carrying strap forming the support area may be extended or shortened by means of attachment or clamping means for attaching the carrying strap to the mounting means and by adjusting the length of the slack after opening the device.

[0029] In particular, at least one of the holding arms may comprise at least one roller and / or at least one ball, which forms part of the support area for the building element. The wheel-shaped roller or ball allows it to reposition the building element currently placed on the respective holding arm. In particular, the building element can be inserted into the holder from the side with the aid of the roller and / or the ball. The roller can be located in a recess in the support area. If a carrying wire and several balls are provided, the balls can be threaded on the wire to form a pearl necklace-like structure.

[0030] The holding structure may be a holding frame with several vertical beams. The vertical beams may be connected to each other by several horizontal beams. The holding structure may comprise a lattice-like or frame-like structure. In particular the vertical beams and the horizontal beams may define a vertical plane next to the storage space. The beams may be made of steel or other suitable materials with sufficient mechanical stability. Preferably, the holding arms are attached or attachable to the vertical beams, for example by fixing means, for example by clamping means.

[0031] The vertical position of at least one of the holding arms can be adjustable. Thus, the vertical height and / or shape of the receiving plane is adjustable. The respective holding arm can be attached or attachable to one of the vertical beams by means of a vertically displaceable fixing or clamping device.

[0032] The storage space may be located between two opposing holding structures, wherein the holding arm is attached to the first holding structure and the holding arm is attached to the second holding structure. Each of the holding structures may constitute a plane, in particular a vertical plane, which preferably extends parallel to each other. When the holding arms are in the holding position, they may be opposite to each other and point to each other. Therefore, the support areas of the two opposing holding arms continue or extend each other. Alternatively, when the holding arms are in the holding position, they may be offset from each other.

[0033] It is also possible that the holding arms on the first holding structure differ from the holding arms attached to the second holding structure, in particular in terms of geometry. Thus, either the holding arms of the first holding structure or the holding arms of the second holding structure can be in the holding position and realize receiving surfaces of different shapes depending on the shape of the building element that is currently to be stored. For example, the holding arms of the first holding structure can realize a concave receiving surface and the holding arms of the second holding structure can realize a convex receiving surface.

[0034] Since one of the main purposes of the support may be to move the building element from the preform mould to the blade mould, the support may comprise at least one transport means for repositioning the support. The transport means may be or may comprise a number of wheels in order to move the support on the ground. Additionally or alternatively, the transport means is or comprises lifting means, in particular a hook or lug adapted to be connected to a rope of a crane. Additionally or alternatively, the transport means is or comprises a fork socket adapted to receive a fork of a forklift.

[0035] The object of the present invention is also solved by a modular bracket, which comprises several brackets according to the above description, wherein two laterally adjacent brackets are releasably connected to each other by connecting means. The connecting means can be lateral, in particular flange-shaped connecting plates, which can be attached to each other by, for example, screws or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other objects and features of the present invention will become apparent from the following detailed description when considered in conjunction with the accompanying drawings. However, the accompanying drawings are schematic diagrams designed for illustrative purposes only and do not limit the present invention. The accompanying drawings show:

[0037] Figure 1 is a perspective view of a first embodiment of a bracket according to the present invention,

[0038] Figure 2 yes Figure 1 Two detailed views of a bracket of , wherein on the left hand side the holding arm is in a first position and on the right hand side the holding arm is in a second position,

[0039] Figure 3 yes Figure 1 Detailed view of the bracket, regarding the attachability of the holding arm,

[0040] Figure 4 is a perspective view of a second embodiment of a bracket according to the present invention,

[0041] Figure 5 yes Figure 4 Detailed view of the bracket, regarding the attachability of the holding arms,

[0042] Figure 6 It is used to realize Figure 4 A perspective view of a kit of retaining arms of a bracket when the retaining arms are assembled,

[0043] Figure 7 is a perspective view of a retaining arm of a third embodiment of a bracket according to the present invention when assembled,

[0044] Figure 8 is a perspective view of a retaining arm of a fourth embodiment of a bracket according to the present invention when assembled,

[0045] Fig. 9 is a perspective view of a retaining arm of a fifth embodiment of a stent according to the invention, the retaining arm being attached to a supporting structure of the stent,

[0046] Fig.10 yes Fig. 9 A side view of the holding arm and holding structure of the stent,

[0047] Fig.11 is a perspective view of a sixth embodiment of a bracket according to the present invention when the bracket is loaded,

[0048] Fig.12 is a perspective view of a seventh embodiment of a bracket according to the present invention when the bracket is loaded,

[0049] Fig.13 is a perspective view of an eighth embodiment of a stent according to the present invention when the stent is loaded, and

[0050] Fig.14 is a perspective view of an embodiment of a modular stand according to the present invention. DETAILED DESCRIPTION

[0051] Figure 1 An embodiment of a stand 1 according to the invention is shown. The stand 1 is suitable for storing and transporting building elements 2 for building rotor blades of wind turbines. The stand comprises a holding structure 3 which is a holding frame with several vertical beams 4 and horizontal beams 5. For better orientation, the figure shows a coordinate system in which the x-axis extends along the short side of the stand 1 and the y-axis extends along the long side of the stand 1. The z-axis points upwards.

[0052] The support 1 comprises holding arms 6 attached to the vertical beams 4 of the holding structure 3. The holding arms 6 are arranged offset in several rows, wherein each row constitutes a respective receiving plane 7 for receiving at least one building element 2. Figure 1 With the support 1 in FIG. 1 , three receiving planes 7 are realized, wherein each receiving plane 7 is formed by five holding arms 6. The three receiving planes 7 generated are vertically staggered.

[0053] The holding arms 6 of the upper receiving plane and the middle receiving plane 7 can be moved from the holding position to the non-holding position. In the holding position, the holding arms 6 protrude vertically from the holding structure 3 into the storage space 8 of the support 1 and form the corresponding receiving plane 7. In the non-holding position, the holding arms 6 move out of the storage space 8 so that the receiving plane 7 below the holding arms 6 can be accessed from above. By way of example and since there is no receiving plane 7 below the holding arms 6 of the lowest receiving plane 7, these holding arms 6 cannot be moved between the holding position and the non-holding position but are permanently in the holding position.

[0054] about Figure 1 In the state of the support 1 shown in FIG, the five holding arms 6 constituting the upper receiving plane 7 are currently in the non-holding position, and the five holding arms 6 constituting the middle receiving plane 7 are in the holding position. Therefore, the building elements 2 stored in the middle receiving plane 7 can be lifted by a lifting device such as a crane, because the five holding arms 6 constituting the upper receiving plane 7 currently release the middle receiving plane 7.

[0055] like Figure 1 As can also be seen in FIG, when the holding arms 6 are in the holding position, they are arranged in several horizontal rows and several vertical rows. However, it is also possible to realize curved or curvilinear rows, in particular if building elements 2 with corresponding shapes should be stored in the support 1.

[0056] In addition to storing the building elements 2 in the support 1, the support 1 can also be used to move or transport the building elements 2. To this end, the support 1 comprises transport means 9 for repositioning the support. The transport means 9 is a horizontal base frame 10 with several wheels 11. Although not shown in the figures, the support 1 also comprises other transport means 9, such as lifting means, in particular hooks or lugs connectable to lugs or hooks of a rope of a crane. Another transport means 9 of the support 1 is a fork socket suitable for receiving the forks of a forklift. Thus, the support 1 can be moved on the ground by the wheels 11 or a forklift, and can be lifted or raised by a crane.

[0057] Reference now Figure 2 The holding arm 6 can be moved from the holding position to the non-holding position and vice versa by pivoting it about the vertical axis 33. For this purpose, a hinge 12 is provided.

[0058] from Figure 2 Another aspect that can be seen in FIG. 1 is that the holding arm 6 comprises two surfaces 13, 14 of different shapes, wherein the holding arm 6 can be moved from a first position (see FIG. 1 ) by rotating the holding arm 6 about a horizontal axis 34. Figure 2 left-hand side in the figure) to the second position (see Figure 2 ). In the first position, the first surface 13 forms a support area for the building element 2, and in the second position, the second surface 14 forms a corresponding support area. The support area is the area of ​​the holding arm 6 which is in contact with the building element 2 arranged in the respective receiving plane 7. Thus, when the holding arm is in the first position, the first surface 13 points upwards or is directed upwards, and when the holding arm 6 is in the second position, the second surface 14 points upwards or is directed upwards. The surfaces 13, 14 are curved so that the respective holding arm 6 forms a concave or convex support area. See Figure 1 , all retaining arms 6 are in the second position.

[0059] Reference now Figure 3 , moving the holding arm 6 from the first position to the second position, or vice versa, is performed by detaching the holding arm 6 from the holding structure 3, rotating it about its longitudinal axis and attaching it again to the holding structure 3. For this purpose, a socket 15 is provided, which is pivotally attached to the holding structure 3 via a hinge 12. Thus, the socket 15 can be rotated together with the holding arm 6 about the vertical axis 33. In addition, a mounting insert 16 of the holding arm 6 is provided, wherein the mounting insert 16 can be inserted into the socket 15 to attach the holding arm 6 to the holding structure 3. The receiving space of the socket 15 and the mounting insert 16 is rectangular. Alternatively, the receiving space of the socket 15 and the mounting insert 16 can each be cylindrical, so that the parts 15, 16 realize the hinge 12, thereby allowing the holding arm 6 to pivot about the vertical axis 33.

[0060] Another aspect of the support 1 is that several replaceable retaining arms 6 are provided, which have support areas of different shapes for building elements 2 of different shapes. Thus, the socket 15 and the mounting insert 16 not only allow the retaining arm 6 to be moved from a first position to a second position, but also allow the replacement of the respective retaining arm 6. In particular, the different retaining arms 6 comprise different lengths and radii of curvature. Thus, the retaining arms 6 and the retaining structure 3 constitute a kit for building supports 1 having receiving surfaces 7 of different shapes.

[0061] Reference again Figure 3 , the holding arm 6 comprises a roller 17 on the surfaces 13, 14, wherein the roller 17 forms part of the support area for the building element 2. The roller is rotatable about the x-axis so that the building element 2 can be loaded into the support 1 from the front side by moving the building element 2 into the support 1 along the y-axis.

[0062] Reference now Figure 4 , a second embodiment of the bracket 1 will be described. While the holding arm 6 of the first embodiment of the bracket 1 is composed of a single piece, the holding arm 6 of the bracket 1 of the second embodiment includes a mounting device 18 and a supporting device 19 attachable to the mounting device 18.

[0063] from Figure 5 It can be seen that the concept of attaching the holding arm 6 to the holding structure 3 is the same as for the first embodiment of the bracket 1 , ie using the hinge 12 together with the socket 15 and the mounting insert 16 as part of the mounting device 18 .

[0064] See now Figure 6 There are several different shapes of support devices 19 (see Figure 6 left-hand side), which can be detachably connected to the mounting device 18 (see Figure 6 The mounting device 18 is a holding frame made of steel and is open toward the upper side, so that each embedded supporting device 19 can be inserted into the mounting device 18 from above. The mounting device 18, the supporting device 19 and the holding structure 3 form a kit for realizing a bracket 1 with receiving surfaces 7 of different shapes.

[0065] Figure 7A holding arm 6 of a third embodiment of a support 1 similar to the second embodiment is shown. The holding arm 6 of this embodiment also comprises a mounting device 18 and a supporting device 19 or an insert, respectively. In contrast to the second embodiment, the supporting device 19 comprises a flexible layer 20, in particular a foam rubber layer made of, for example, polyurethane foam, which forms an elastic supporting area for the building element 2. Although several supporting devices 19 are also provided in the third embodiment, the flexible layer 20 reduces the number of different supporting devices 19 required for building elements 2 of different shapes, since the geometry of these supporting devices 19 is adjusted to the geometry of the respective building element 2. Furthermore, the supporting device 19 with the soft foam layer 20 is not as heavy as the supporting device 19 without the layer 20, which makes it easier to handle.

[0066] Figure 8 A holding arm 6 of a support 1 according to a fourth embodiment is shown. Here, the support means 19 is made of a piece of flexible material, such as foam rubber, for example polyurethane foam. In this embodiment, the support means 19 in the frame or mounting device 18, respectively, automatically adapts to the geometry of the building element 2 placed thereon.

[0067] Next, we will use Fig. 9 and 10 A fifth embodiment of the support 1 is explained. In this embodiment, at least one of the holding arms 6 comprises a mounting device 18 and a supporting device 19, wherein the supporting device 19 is a carrying strip 21 which is attached to the frame or the mounting device 18 at two locations. Thus, a portion of the carrying strip 21 hangs loose to constitute a flexible supporting area for the building element 2. Instead of a carrying strip 21, the supporting device 19 may be a carrying wire.

[0068] from Fig. 9 and Fig.10 It can also be seen that the mounting device 18 can be telescopically extended via the telescopic rails 22. Thus, the length of the holding arm 6 is adjustable. In order to adapt the length of the slack portion of the carrying strap 21 to the current length of the holding arm 6, the strap 21 can be adjusted by attaching the carrying strap 21 to one of the attachment means of the mounting device 18. The attachment means is a clamping device 23.

[0069] Instead of the support belt 21, a support wire can be provided, which in particular includes a ball that can rotate about the x-axis. Although the support wire and the ball forming the pearl necklace-like structure are not shown in the figure, these components realize the same as by means of Figure 3 The roller 17 described has the same purpose.

[0070] Still see Fig. 9 and 10, the holding arm 6 is attached to the holding structure 3 or the vertical beam 4, respectively, by means of a vertically displaceable clamping device 24. Thus, the vertical position of the holding arm 6 is adjustable. Thus, the number and geometry of the receiving planes 7 of the bracket 1 are adjustable. This feature may also be applied to other embodiments described herein.

[0071] Fig.11 A sixth embodiment of a support 1 is shown, in which a storage space 8 is located between two opposing retaining structures 3, namely a first retaining structure 25 and a second retaining structure 26, wherein the first retaining structure 25 and the second retaining structure 26 are attached to a transport device 9 and extend parallel to each other. The vertical beams 4 of the retaining structures 25, 26 are in particular opposite to each other and equidistantly separated. Each of the retaining structures 25, 26 comprises a retaining arm 6 attached thereto, and the retaining arm 6 can be moved from a retaining position to a non-retaining position and vice versa. Basically, the retaining arm 6 can include the features of the embodiments described previously. In Fig.11 In the present case, the building element 2 is lowered from above into the support 1 .

[0072] exist Fig.11 In the case shown in , the holding arms 6 of the first holding structure 25 are currently in the holding position, wherein the holding arms 6 of the second holding structure 26 are in the non-holding position. The shape of the holding arms 6 is such that when the holding arms 6 of the first holding structure 25 are in the holding position, the holding arms 6 constitute the concave receiving surface 7, and when the holding arms 6 of the second holding structure 26 are in the holding position, the holding arms 6 constitute the convex receiving surface 7.

[0073] Fig.12 A seventh embodiment of the bracket 1 is shown, which is similar to Fig.11 However, in Fig.12 In the embodiment of the invention, the holding arms 6 of the first holding structure 25 and the second holding structure 26 are bent to the same extent, so that the corresponding receiving surfaces 7 are available for the concave building elements 2. By rotating the holding arms 6 about the horizontal axis 34 from the first position (such as Fig.12 By moving the convex building element 2 (shown) into the second position, a receiving surface 7 for the convex building element 2 is realized.

[0074] Although the vertical steel beam 4 Fig.11 The bracket 1 is opposite to each other, and the vertical steel beam 4 is Fig.12 The bracket 1 is biased. Therefore, when in the holding position, Fig.12 In the bracket 1, adjacent holding arms 6 in a row can be placed closer to each other.

[0075] Fig.13 A support 1 according to an eighth embodiment is shown. Fig.11 and 12. However, in this embodiment, the holding arms 6 of the first holding structure 25 and the second holding structure 26 are opposite to each other and point to each other when in the holding position. Therefore, the two opposite holding arms 6 constitute a virtual holding line, the length of which is more than twice that of each actual holding arm 6. The vertical beams 4 of the holding structures 25, 26 are opposite to each other and are particularly equidistantly spaced.

[0076] Fig.14 An embodiment of a modular support 27 according to the invention is shown. The modular support 27 comprises several supports 1 according to the invention, in particular according to one of the above-described embodiments. Specifically, Fig.14 The modular support 27 comprises two supports 1 which are positioned laterally adjacent to each other and can be connected to each other by means of a connection means 28. The connection means 28 is a horizontal connecting beam 29 which has a connection plate 30 on its front end. There are corresponding connection plates 31 which are attached to the holding structure 3 and the transport means 9. The flange-like connection plates 30, 31 can be connected or attached to each other by means of screws 32 or other suitable attachment means.

[0077] Although the present invention has been described in detail with reference to the preferred embodiments, the present invention is not limited to the disclosed examples, and those skilled in the art can derive other variations from the disclosed examples without departing from the scope of the present invention.

Claims

1. A support for transporting and / or storing building elements (2) for building a rotor blade for a wind turbine, wherein: The support (1) comprises a holding structure (3) and a plurality of holding arms (6) attached or attachable to the holding structure (3), wherein the holding arms (6) are offsetly arranged in a plurality of rows when in a holding position, in which the holding arms protrude from the holding structure (3) in a storage space (8) of the support (1), wherein the holding arms (6) arranged in each row construct a corresponding receiving plane (7) for receiving at least one building element (2) extending on at least a plurality of holding arms (6) in the row, wherein at least two vertically staggered receiving planes (7) are constructed, wherein at least one of the holding arms (6) constructing an upper receiving plane (7) is movable from the holding position to a non-holding position, in which the corresponding holding arm (6) is moved out of the storage space (8) above the receiving plane (7) below the upper receiving plane (7), and vice versa.

2. The bracket according to claim 1, characterized in that: When the holding arms (6) are in the holding position, the holding arms (6) are arranged in several horizontal rows and several vertical rows.

3. The bracket according to claim 1 or 2, characterized in that: At least one of the retaining arms (6) is movable from the retaining position to the non-retaining position and vice versa by pivoting it about an axis, in particular a predominantly vertical axis (33).

4. The support according to any one of the preceding claims, characterized in that At least one of the holding arms (6) comprises at least two different, in particular differently shaped, surfaces (13, 14), wherein the holding arm (6) is movable from a first position to a second position by rotating the holding arm (6) about an axis, in particular a horizontal axis (34), wherein when the holding arm (6) is in the first position the first surface (13) constitutes a support area for the building element, and when the holding arm (6) is in the second position the second surface (14) constitutes the support area.

5. The support according to any one of the preceding claims, characterized in that Several exchangeable holding arms (6) are provided, in particular comprising differently shaped support areas for the building element (2), wherein the holding arms (6) can be detachably attached to the holding structure (3).

6. The support according to any one of the preceding claims, characterized in that At least one of the holding arms (6) comprises a mounting device (18) and a supporting device (19) which is attached or attachable to the mounting device (18) and constitutes a flexible supporting area for the building element (2).

7. The bracket according to claim 6, characterized in that: The support device (19) is at least partially made of elastic material, in particular polyurethane foam, or it comprises a particularly loose-fitting support belt (21) or a support wire.

8. The support according to any one of the preceding claims, characterized in that At least one of the retaining arms (6) comprises the mounting device (18) or a mounting device (18), wherein a plurality of different, in particular differently shaped, supporting devices (19) are provided, which can be detachably connected to the mounting device (18).

9. The support according to any one of the preceding claims, characterized in that At least one of the retaining arms (6) or the or a mounting device (18) of at least one of the retaining arms (6) is adjustable in length, in particular telescopically extendable.

10. The support according to any one of the preceding claims, characterized in that At least one of the holding arms (6) comprises at least one roller (17) and / or at least one ball, which forms part of a support area for the building element (2).

11. The support according to any one of the preceding claims, characterized in that The holding structure (3) is a holding frame having several vertical beams (4), wherein the holding arms (6) are attached or attachable to the vertical beams (4).

12. The support according to any one of the preceding claims, characterized in that The vertical position of at least one of the holding arms (6) is adjustable, wherein the holding arm (6) is in particular attached or attachable to one of the vertical beams (4) by means of vertically displaceable clamping means (24).

13. The support according to any one of the preceding claims, characterized in that The storage space (8) is located between two opposing holding structures (3), wherein the holding arm (6) is attached to a first holding structure (25) and the holding arm (6) is attached to a second holding structure (26).

14. The support according to any one of the preceding claims, characterized in that The support (1) comprises at least one transport device (9) for repositioning the support, wherein the transport device (9) is or comprises a number of wheels (11) and / or lifting devices for moving the support (1) on the ground, in particular hooks or lugs suitable for connection to the ropes of a crane, and / or fork sockets suitable for receiving the forks of a forklift.

15. A modular support comprising several supports (1) according to any one of the preceding claims, characterized in that Two laterally adjacent supports (1) can be releasably connected to each other via a connecting device (28).

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