EP3321451A1 - Platform structure made from frame components with a platform roof which can be raised and lowered by a lifting tower - Google Patents

Abstract

A stage structure (10) comprising a stage floor (14), a stage roof (12) at least partially overlapping the stage floor (14) and at least one lifting tower (16) immovable relative to the stage floor (14) and rising therefrom in a height direction (H). 17, 18, 19), with which the stage roof (12) for changing its in height direction (H) distance to be measured from the stage floor (14) in and opposite to the height direction (H) is relatively movably connected, wherein the stage roof (12) has a recess (30, 32) which, starting from a stage (14) facing side (12c) of the stage roof (12) in the height direction (H) in the stage roof (12) into and into which the at least one lifting tower (16, 17 , 18, 19) protrudes in the height direction (H), wherein the stage roof (12) comprises a the at least one recess (30, 32) comprehensive with participation of detachably interconnected roof truss rods (22, 24, 26) formed roof truss body ( 20 ), according to the invention is characterized in that the lifting tower (16, 17, 18, 19) at least over a majority of its extension in the height direction (H) by a tower truss body (44) with detachable and separable interconnected tower truss rods (36 , 38, 42) is formed.

Description

The present invention relates to a stage structure comprising a stage floor, a stage floor at least partially overlapping stage roof and at least one towering relative to the stage floor and towering from this in a height direction lifting tower, with which the stage roof to change its height to be measured distance from the stage floor in and opposite the height direction is relatively movably connected, wherein the stage roof has a recess, which extends starting from a stage floor facing the stage roof in the height direction in the stage roof and into which projects the at least one lifting tower in the vertical direction, wherein the stage roof a the at least one recess comprehensive formed with the participation of detachably interconnected roof truss rods roof truss body has.

Such a stage construction is known from the prior art in various configurations.

On the one hand, stage structures are known which use so-called "towers" as lifting towers, which are also referred to as "four-point lattice girders". These trusses are prefabricated truss volume components made of metal, with a pitch of mainly between 300 and 1000 mm. Also, the stage roof is formed in these embodiments by prefabricated timber frame volume components.

In the present application, a "grid dimension" is always a side length of a recurring truss element in a plan view plane or a parallel to the plan view plane. Depending on whether a so-called field formed by horizontal elements (usually horizontal bars or rods) of the truss in a plane parallel to the ground plane has only one uniform side length, as is the case with a square field, or different side lengths As is the case with a non-square rectangular field, a truss body may have more than one pitch. This applies to the prior art as well as for the present application.

With the truss elements lifting towers are quickly buildable in the vertical direction, as a prefabricated and not further dismantled truss element as half-timbered volume component already forms a height section of the lifting tower and thus stacked to establish a lifting tower only a plurality of truss elements in the vertical direction and fixed need to be. In addition, the lifting towers formed from truss elements also serve as guide structures for guiding movement of the stage roof in and against the height direction relative to the lifting towers. An external hoist is usually not necessary because the known stage structure has a lifting drive that allows a process of the stage roof along the lifting towers.

A disadvantage of these known stage structures, however, on the one hand, the large transport volume of truss elements, as they occupy a much larger volume than prefabricated volume timber frame components than the truss or the truss components forming rods. On the other hand, it is disadvantageous to the known stage structures described that just by the use of volume truss components whose dimensions can not be arbitrarily large, so that their carrying capacity is limited. This in turn leads to a construction-related limitation of the size of the stage structure. For example, due to the design-limited carrying capacity of lifting towers formed from truss elements the stage roof have only a limited span.

There are also known stage structures, which have a truss body, which is formed from releasably and singly interconnected truss rods. In this case, the stage floor also includes a floor truss body, as the stage roof has a roof truss body and as side and rear walls of the stage structure wall-truss body. These truss bodies of stage roof, stage walls and stage floor may be due to the use of individual Truss rods instead of prefabricated volume truss components are built with greater design variety, the erection itself requires a higher installation effort in terms of the number of individual parts to be joined.

Although such a platform structure formed from half-timbered bodies has a significantly higher load-bearing capacity than the above-described stage structure with lifting towers made of truss elements, and because of the separability of the trussed rods also has a higher packing density in the disassembled state. However, a stage roof of the latter stage structure can not be moved up from the stage floor along lifting towers as in the former stage construction because it simply lacks the same lifting towers. Rather, in the latter known stage structures always an external hoist, such as a crane, used to first form the stage roof with his roof truss body on the ground and then put on the upper ends of the side and rear walls of the stage structure also formed and to connect with these.

It is therefore an object of the present invention, a stage structure of the type mentioned in such a way that at significantly increased load capacity, compared with the lifting towers formed from truss elements, the stage roof without providing external lifting equipment, such as cranes and the like, in its desired Nenn Position can be spent.

This object is achieved by a generic stage structure in which the lifting tower is formed at least over a majority of its extension in the height direction by a tower-truss body with detachably and individually interconnected tower truss rods.

The lifting tower is according to the invention at least over a large part, ie formed over more than 50%, of its extension in the height direction by a tower truss body. Thus, the lifting tower can be easily and safely erected quickly in height. Only at its bottom closer longitudinal end, if necessary be provided for anchoring the lifting tower on the ground or on another structure, such as the stage floor, non-structural components.

The same applies in addition or as an alternative to the bottom-distal longitudinal end of the lifting tower, which is also referred to as "lifting tower head." The lifting tower head can also be formed from a truss. or chain mounts and / or with pulleys.

In the context of the present application, "truss" is understood abstractly to mean a truss structure in which rod-shaped truss elements are connected to nodes. To facilitate differentiation below horizontally running in the framework truss elements are referred to as "bars" vertically running in the framework truss elements are referred to as "stems" and diagonally running in the framework truss elements are referred to as "diagonal". These are generally rod-shaped elements. At least some truss elements, preferably a majority of the truss elements of a truss body or of several truss bodies, are preferably elements of existing, prefabricated truss truss systems. A truss body is a body formed from such a truss.

The roof truss body as well as the tower truss body are with the participation of parallel to a floor plan plane of the respective truss body extending bars (horizontal bars) orthogonal to the ground plane and thus orthogonal to the bars extending stems (vertical stems) and oblique to the bars and the stems formed extending diagonal. Adjacent bars form floor plan fields in their respective arrangement level. Heightwise adjacent bars connected by parallel stems form elevation fields. The side lengths of rectangular fields, which includes the special case of square fields, are the pitch of the respective field.

In an area "tiled" of fields in which fields follow one another in a sequential direction, the consecutive fields orthogonal to the follower direction typically have a uniform equal pitch, while the pitch in the follower direction may vary from field to field.

For stiffening the truss body several or possibly all fields are stiffened with diagonals that extend diagonally through the field. It may also be intended to use spatial diagonals that extend between two spaced-apart arrays, including an angle with both the bars and the stems. The term "truss rods" in the present application, a set of a plurality of respective bars, stems and diagonals.

Due to the fact that the tower truss body is formed from detachably and individually connectable tower truss rods, the truss truss rods can be transported in as dense a packing as possible to the erection site of the stage structure. Existing transport capacities can thus be used efficiently.

So that the roof-truss body can be constructed and erected with the greatest possible freedom of design, the roof truss rods are preferably not only solvable, but singly connected together. However, it should not be ruled out in principle that prefabricated or preassembled timber frame volume components are used to form the stage roof, although this is not preferred.

The above-mentioned reference plane is the floor plan plane of the stage structure or a plane parallel thereto, to which the height direction is oriented orthogonally.

By the described solution, a stable and high-capacity lifting tower can be built, which can not only carry a stage roof large span, but on which the stage roof in height direction relative to the lifting tower movable can be provided. Thus, the stage roof on the lifting tower and along the same can be lifted away from the stage floor.

The at least one lifting tower can be designed according to the required load-bearing capacity and can be erected by releasably connecting initially sparsely present tower truss rods. The only technical requirement is that the recess in the roof truss body is chosen so large that the lifting tower protrude into the recess at least or preferably this can prevail.

This can be effected in a manner that is as simple as it is efficient, by forming the recess by omitting diagonals in height-overlapping layout fields. The floor plan area of a recessed area can be further increased by combining two or more smaller floor plan fields into a larger recess area by omitting bars. The recessed area is larger in terms of circumscribed area and shape than the elevation area of the lift tower, so that the elevation area of the elevation tower fits completely within the perimeter area of the recessed area. The floor plan of the lifting tower can be formed by a single tower ground plan field or, if the required lifting capacity of the lifting tower so requires, by a plurality of tower layout fields.

In order to ensure that the lifting tower can protrude into the recess, preferably at least a part of the tower bolt is formed shorter than the roof bolt used to form the recess.

Furthermore, it can be ensured that the lifting tower can protrude into the recess if an integral multiple of the roof floor plan spacing of the roof-floor plan fields adjacent to the recess is greater than an integer in both mutually orthogonal and the plan view plane spanning ground plan directions Multiple of tower floor plans in the same floor plan direction. The integer multiple includes the factor "1". The multiples of roof floorplanes and tower floorplanes may be different multiples as long as only the above condition is met. In addition, the respective multiples of one and the same framework body be different in the two ground plan directions.

Surprisingly, the stage roof on the at least one lifting tower does not have to be guided for movement in and against the height direction, but the recess enclosing the roof truss body sections orthogonal to the height direction on all sides with play, d. H. be arranged at a distance in the ground plane of the lifting tower. The stage roof can therefore be movable at least during a movement in or against the height direction and orthogonal to the height direction relative to the lifting tower. However, the maximum possible movement path is parallel to the height direction by a multiple greater than orthogonal to the height direction.

The stage roof may include components other than the truss, such as a roof covering, to protect a stage floor surface under the stage roof from precipitation or sunlight.

If a low lifting height of the stage roof is sufficient relative to the stage floor in the height direction, then it is sufficient if the lifting tower protrudes at the beginning of the stage structure only in the recess and by raising the stage roof in the height direction away from the stage floor, the Einragtiefe the lifting tower is reduced in the recess ,

A much larger possible lifting height is provided according to an advantageous development of the present invention in that the recess of the stage roof passes through this in the vertical direction. Then, the lifting tower can enforce the stage roof in the construction of the stage structure, so that the constructive possible lifting height of the stage roof is determined relative to the stage floor in the height direction substantially by the structural height of the lifting tower.

With the presently described stage structure is usually not the finished stage structure described. Rather, the stage construction can be a Intermediate as it temporarily exists during the construction of the final stage construction. Because just during the construction of the stage structure, the advantages of the stage structure according to the invention are achieved.

Since the lifting tower is always burdened at least by the weight of the stage roof, it is sufficient because of always the same direction of action of the weight for secure connection of stage roof and lifting tower at least during the construction phase, when the connection of the stage roof with the lifting tower comprises exclusively connecting force transmitting connection means. These connecting means may be chains or preferably ropes. The exclusively traction transmitting connection means are therefore limp and are stretched by the load forces occurring. Bending sludge, exclusively tensile force transmitting connecting means can be advantageously stored space-saving. Straight ropes also have a high on the rope volume related carrying capacity.

In principle, it should not be excluded that the connecting means are part of manually operated lifting means, for example part of pulleys. However, the stage structure preferably has a movement drive in order to drive the stage roof for movement relative to the lifting tower. The movement drive may be an electric motor, in particular a rotating electric motor, or an internal combustion engine. Due to the standstill torque provided, electric motors are preferred as motion drives.

Due to the highly load-bearing structural design of the stage roof and / or the lifting tower as a framework body, the motion drive can be stored particularly space-saving on the stage roof and / or on the lifting tower.

For the pliable connecting means, it is advantageous if the movement drive has a winding roller which can be driven for rotation in order to provide the connecting means in a space-saving manner. Then, the relative movement between stage roof and lifting tower, depending on the desired direction of relative movement, orthogonal to the ground plane (reference plane) by winding or unwinding of the connecting means can be effected. Alternatively or additionally, or the motion drive a Chain hoist with chain driven to move have. This has the advantage over a connecting means which can be wound up and down that the chain speed in the chain longitudinal direction is independent of a winding diameter of a connecting means stored by winding. Thus can be achieved by very simple means, such as by driving a chain drive gear at a constant speed, a constant chain speed and consequently a constant lifting and lowering speed of the stage roof.

The stage roof can be supported in a particularly simple and effective manner on the lifting tower by fixing the connecting means at one end to a first connecting means bearing and at the other to a second connecting means bearing at the stage roof, wherein a connecting means portion situated between the first and the second connecting means bearing extends over the lifting tower. The first or / and the second connecting means bearing may be formed on a roof truss rod or it may, for example, if the stiffness of the truss rods is not sufficient as a storage location of the connecting means, a separate bearing element, such as a particularly stiff bearing rod, provided on the roof Tray body is arranged and fixed as a connector storage.

Since the connecting means can also move relative to the lifting tower when the stage roof is raised or lowered in the vertical direction, the lifting tower preferably has a deflection means carrier with at least one deflection means supported thereon, via which the connection means portion of the connection means located between the first and the second connection means bearings Lanyard is guided.

In principle, it can be thought of to provide the movement drive on the lifting tower, from which starting the flexible connecting means is guided to the connecting medium bearing on the stage roof. Then, for example, both from the first and from the second connecting means bearing, which preferably are diametrically opposed relative to the lifting tower, in each case a connecting means can be guided to a movement drive at the head of the lifting tower.

However, it may be sufficient to use only one movement drive per lifting tower, for example when the winding roller or the chain hoist is mounted on the stage roof and forms the first connecting medium bearing. Then, from the winding roll or the chain hoist, the connecting means can be guided over the lifting tower to the opposite second connecting medium bearing, where it is coupled with a bearing element, for example in a form-fitting manner.

In order to secure the stage roof in a desired position at a distance in height from the stage floor and thereby relieve the lifting tower, can be provided according to an advantageous embodiment of the present invention, that the stage roof when it is at a predetermined nominal distance from the stage floor , Is connected by at least one side wall and / or rear wall to the stage floor. Also, the side wall and / or the rear wall preferably also comprise a wall truss body, particularly preferably with a grid dimension which is an integer multiple - including "1" - of the roof pitch, so that the at least one side wall and / or the rear wall in a simple Way suitable with the stage roof can be connected to nodes of the roof truss body or can. For reasons of increased fit to facilitate connection of the stage roof and at least one wall and the wall-truss body is formed with the involvement of detachably interconnected roof truss rods, with the roof truss rods of the wall-truss body preferably not only solvable, but isolatable are in order to be able to transport them tightly packed in the isolated state to the site of the erection of the stage structure.

Also, the stage floor may comprise a floor truss body with releasably and preferably singly interconnected truss rods for the reasons mentioned a quick construction of a stable structure and a space-saving packaging as possible for transporting trussing rods used for this purpose. The truss rods preferably include roof truss rods, so that stage floor and stage roof can be formed with the same grid dimensions in the two orthogonal ground plan directions. Besides, so can also the connectivity of wall-timbered bodies are facilitated with the stage floor.

For example, a roof pitch may be 2072 mm pitch. In this case, the tower pitch may be a pitch of 1710 mm or 1570 mm. These are common grid dimensions in scaffolding, so that the stage structure including the lifting tower can be produced by known scaffolding components.

Likewise, the grid size of the stage floor, stage roof and side and / or rear walls can be 1710 mm. Then the lifting tower can have a pitch of 1570 mm.

The stage roof can have more than just a nominal distance from the stage floor. Thus, for example, a first nominal distance may have a value of slightly more than an average height of a male adult, about 2 m, to secure the stage roof above the stage floor for the first time by side and / or rear walls under relief of the lifting tower and at this low first nominal height, to install lighting and / or other functional devices on the stage roof before it is further raised to a second, larger nominal distance, which may be a multiple of the average size of a male adult.

• Bereitstellen eines Bühnenbodens,
• lösbares Verbinden von Dach-Fachwerkstangen zu einem Dach-Fachwerkkörper, wobei der Dach-Fachwerkkörper eine Aussparung aufweist, welche ausgehend von einer dem Bühnenboden zugewandten Seite des Bühnendaches in einer Höhenrichtung vom Bühnenboden weg in das Bühnendach hinein verläuft,
• Errichten eines relativ zum Bühnenboden unbeweglichen und in Höhenrichtung von dem Bühnenboden abstehenden Hubturmes am Ort der Aussparung des Dach-Fachwerkskörpers, wobei das Errichten des Hubturmes ein lösbares Verbinden einzelner Turm-Fachwerkstangen zu einem Turm-Fachwerkkörper umfasst, wobei der Turm-Fachwerkkörper sich wenigstens über einen Großteil der Abmessung des Hubturms in Höhenrichtung erstreckt,
• dann, wenn sich der Hubturm in Höhenrichtung in die Aussparung hinein oder durch diese hindurch erstreckt, Verbinden von Dach-Fachwerkkörper und Hubturm derart, dass der Dach-Fachwerkkörper relativ zum Hubturm in Höhenrichtung beweglich ist, und
• Bewegen des Dach-Fachwerkkörpers in Höhenrichtung unter Vergrößerung des Abstandes zwischen Dach-Fachwerkkörper und Bühnenboden.

The above object is also achieved by a method for constructing a stage structure comprising the following steps:

• Providing a stage floor,
• detachably connecting roof truss rods to a roof truss body, the roof truss body having a recess which extends from a stage floor facing side of the stage roof in a height direction away from the stage floor into the stage roof,
• Erecting a relative to the stage floor immovable and projecting in the height direction of the stage floor lifting tower at the location of the recess of the roof truss body, the erection of the lifting tower a detachable Connecting individual tower truss rods to a tower truss body, the tower truss body extending at least a majority of the dimension of the lift tower in the height direction,
• when the lifting tower extends in height direction into or through the recess, connecting roof truss body and lifting tower such that the roof truss body is movable relative to the lifting tower in the height direction, and
• Moving the roof truss body in the vertical direction by increasing the distance between roof truss body and stage floor.

For the advantages of the method, reference is made above to the comments on the device. It is irrelevant whether the at least one lifting tower is erected before or after the stage roof or whether both are built simultaneously.

The provision of the stage floor can, as already indicated above, comprise a detachable connection of initially individually present truss rods, in particular roof truss rods, to a floor truss body. The stage floor may include, for example, a floor covering and other functional elements beyond the floor truss body.

As described above, when the distance between the roof truss body and the stage floor corresponds to a predetermined nominal distance, the method may detachably connect truss rods, particularly roof truss rods, to form a wall connecting the roof truss body to the stage floor Compartment body.

If the lifting tower is no longer needed after the construction of the stage, because the stage roof has reached its final height position and secured by side and / or back walls, the lifting tower can be reduced, if this should aesthetically disturb the overall impression of the stage structure.

If there is talk of at least one lifting tower above, this applies to the very fundamental principle of the stage structure described here. In order to avoid tilting of the stage roof during lifting or lowering along the lifting tower about a tilt axis orthogonal to the height direction, the stage structure preferably at least during its erection on a plurality of lifting towers, such as three or four lifting towers, which are arranged in the ground plane with distance from each other are and each protrude into a recess of the stage roof in the vertical direction or enforce this.

To secure the position of the at least one lifting tower, it is preferably connected to it in the area of the stage floor, for example by connecting rods between the floor half-timbered body and the tower half-timbered body.

Figur 1

eine grobschematische Seitenansicht eines erfindungsgemäßen Bühnenaufbaus während seiner Errichtung,

Figur 2

eine grobschematische Seitenansicht des Bühnenaufbaus von Figur 1 nach Abschluss seiner Errichtung,

Figur 3

eine Ansicht des Bühnendaches von unten mit Blickrichtung längs der Höhenrichtung der Hubtürme,

Figur 4

eine Schnittansicht durch den Bühnenboden längs der Schnittebene IV-IV von Figur 1 mit Blickrichtung orthogonal zur Grundrissebene von dem Bühnendach weg,

Figur 5

eine Rückansicht des fertiggestellten Bühnenaufbaus entlang der Blickrichtung V-V von Figur 2 und

Figur 6

eine perspektivische Ansicht eines Hubturmkopfes mit einem Teil des diesen umgebenden Dach-Fachwerkkörpers.

The present invention will be explained in more detail with reference to the accompanying drawings. It shows:

FIG. 1

a rough schematic side view of a stage structure according to the invention during its construction,

FIG. 2

a rough schematic side view of the stage structure of FIG. 1 after completion of its construction,

FIG. 3

a view of the stage roof from below looking along the height direction of the lifting towers,

FIG. 4

a sectional view through the stage floor along the section plane IV-IV of FIG. 1 looking in the direction orthogonal to the ground plane away from the stage roof,

FIG. 5

a rear view of the finished stage structure along the viewing direction VV of FIG. 2 and

FIG. 6

a perspective view of a Hubturmkopfes with a part of the surrounding roof truss body.

In FIG. 1 an embodiment of a stage construction according to the invention is generally designated 10. The stage structure is shown in side view and comprises a stage roof 12, a stage floor 14 and a total of four lifting towers, of which in FIG. 1 a front lifting tower 16 closer to the public and a rear lifting tower 18 further away from the public are shown.

The lifting towers 16 and 18 are preferably identical, which is why representative of all lifting towers of the stage structure 10 according to the invention only the front lifting tower 16 is described below.

The stage roof 12 comprises a roof truss body 20 which is formed from a plurality of vertical stems 22, a plurality of horizontal bars 24 and a plurality of diagonals 26 stiffening roof-elevation panels 27 formed by stems 22 and bars 24. Not all roof-elevation fields 27 of the roof truss body 20 are stiffened with diagonal 26.

Furthermore, 12 differently long vertical stems 22 may be used in the stage roof to the in FIG. 1 shown inclined roof surfaces 12a and 12b to form.

The stage roof 12 is further covered with roof panels or roof tarpaulins 28 which are anchored to the roof truss body 20 to form a rain-proof roof skin.

The stage roof 12 and thus also the roof truss body 20 have recesses 30 and 32, which extend from a stage floor 14 facing side 12c of the stage roof 12 in height direction H in the stage roof 12 and in the example shown, the stage roof 12 completely , In the recess 30 of the lifting tower 16 projects in the height direction H, in the recess 32 of the lifting tower 18th

FIG. 1 shows the stage roof 12 already in a raised position in a predetermined nominal distance position. Originally, the stage roof 12 was mounted on the surface 14a of the floor covering 34 of the stage floor 14 around the previously erected lifting towers 16 and 18 and then raised in the height direction H relative to the lifting towers 16 and 18 without external hoisting equipment. For this purpose, the stage roof 12 by ropes 37 and 39 in and against the height direction H relative to the lifting towers 16 and 18 is movably connected to the lifting towers 16 and 18. The connection of the lifting towers 16 and 18 with the stage roof 12 will be discussed below FIG. 6 be explained in more detail.

The stems 22, bars 24 and diagonals 26 of the stage roof 12, which may have different lengths depending on the desired roof shape, form a group of roof truss rods to form the roof truss body 20. The roof truss rods 22, 24 and 26 are detachable and singularly connected to each other and can be completely separated during the dismantling of the stage roof and transported tightly packed after their separation.

The lifting towers 16 and 18 also have vertical stems 36 which are interconnected by horizontal bars 38 to form rectangular tower elevation panels 40, the rectangular tower elevation panels 40 being stiffened by diagonal 42.

The stems 36, bars 38 and diagonals 42 form tower truss rods, which are releasably and singly connected to a tower truss body 44. The lifting towers 16 and 18 can therefore be reduced substantially by singling the tower truss rods 36, 38 and 42 and the items in dense pack under efficient transport space use and be transported away.

Also, the tower vertical stems 36 may be of different lengths, for example, to form a lift tower head 46 or possibly also a lift tower pedestal 48 of differing height dimensions as compared to the intervening tower elevation panels 40, as necessary or desired.

The lifting towers 16 and 18 have in the example shown a square tower floor plan field 50 and thus a square base (see, for example Figures 3 and 4 ). The tower ground plan field 50 is formed by square-connected horizontal bars 38.

Between the Hubturmsockel 48, which forms a bottom closer longitudinal end of the lifting tower 16, and the Hubturmkopf 46, which forms a bottom remote longitudinal end of the lifting tower 16, a plurality of, in the present example, four tower-elevation fields 40 of the same height can be arranged.

The horizontal bars 38 of the lifting towers 16 and 18 are chosen in terms of their length so that their longitudinal dimension is smaller than the corresponding length dimension of the recesses 30 and 32. This ensures that the lifting towers 36 and 38 their associated recesses 30 and 32nd can prevail with horizontal play or can protrude into this, so that a relative mobility of the stage roof 12 in and against the height direction H is ensured relative to the lifting towers 16 and 18.

The stage floor 14 also comprises a floor truss body 54 with vertical stems 56, horizontal bars 58 and diagonals 60 as floor truss rods.

In the example shown, the lifting towers 16 and 18 also enforce the stage floor 14, since the pitch of the ground truss body 54 in the area of the lifting towers 16 and 18 is greater than the pitch of the lifting towers 16 and 18. Thus, the lifting towers 16 and 18 with all-round game into the ground plan fields 62 formed by the horizontal bars 58 (see FIG FIG. 4 ). Preferably, the lifting towers 16 and 18 for better securing their position in the enforcement area of the ground-truss body 54 with its vertical stems 56 by connecting struts 64 (see FIG. 4 ) connected. The connecting struts 64 thereby extend between each individual vertical stem 36 of the lifting towers 16 and 18 and the respectively nearest vertical stem 56 of the ground truss body 54.

In FIG. 2 is the situation of FIG. 1 shown in the same side view with further construction progress in the construction of the stage structure 10. Between the stage roof 12 and the stage floor 14, a side wall 66 and a rear wall 68 is now erected, both as sidewall truss body 70 and rear wall truss body 72. Through the walls 66 and 68, on which the stage roof 12 rests, the hoisting ropes 37 and 39 and with these the lifting towers 16 and 18 are relieved of the load of the stage roof 12. The roof tarpaulins 28 are in FIG. 2 also laid over the recesses 30 and 32 to form a completely closed roof skin.

The wall truss bodies 70 and 72 are constructed in a conventional manner by releasably and individually separable connected vertical stems, horizontal bars and diagonals and in a short time up and also degradable. The wall truss bodies 70 and 72 are, like the roof truss body 20, the tower truss body 44 and the ground truss body 54 in a conventional manner in scaffolding construction by truss rods in the form of vertical stems, horizontal bars and diagonal formed.

In FIG. 3 is a view of the stage floor closer side 12c of the stage roof 12 with projecting into the recesses 30 and 32 lifting towers 16 and 18 shown. The further structure of the stage roof 12 lying behind the surface 12c, in particular the roof skin 28 and its supporting structure, is or are not shown. The only portions of the stage assembly 10 which are located behind the plane of the stage floor closer side 12c and yet shown are the lifting tower heads 46 of the lifting towers 16 and 18.

As in FIG. 3 can be seen, in addition to the already explained lifting towers 16 and 18, two more lifting towers 17 and 19 are present, of which the lifting tower 17 is closer to the audience watching the spectacle on the stage and the lifting tower 19 is further away from the audience. These lifting towers 17 and 19 are identical to the lifting towers 16 and 18, so that the description of the lifting tower 16 is also applicable to the lifting towers 17 and 19. Also the lifting towers 17 and 19 thus enforce 10 openings in the stage roof 12 during the construction phase of the stage structure.

The stage roof 12 is suspended during lifting and lowering along the lifting towers 16, 17, 18 and 19 only by the hoisting ropes 37 and 39 and other hoisting ropes on the lifting towers 17 and 19 on the lifting towers 17 to 19, but not led to the exact lifting movement. The stage roof 12 hangs with horizontal play on the respective lifting towers 17 to 19 and is in the context of horizontal play, d. H. in the context of between the Hubturmseiten and the sides of the interspersed by the lifting towers recesses 30 and 32 horizontally, d. H. orthogonal to the vertical direction H, movable on all sides.

As FIG. 3 shows, can be used to form the roof truss body 20 horizontal bar 24 different length, so that the rooftop truss body 20, more precisely on the stage floor 14 facing side 12c, formed fields depending on location may have different size and dimensions.

In FIG. 4 a section through the stage floor 14 is shown, which shows the fields of the ground truss body 54 formed parallel to the ground plane.

To generate the lowest possible center of gravity of the stage assembly 10, not shown ballast elements may be included in the ground truss body 54, for example made of concrete, to secure the stage structure 10 against the action of wind loads and against dynamic loads of any performances on the stage. In FIG. 4 is the rear wall 68 can be seen, which is formed with a smaller wall thickness than the side walls 66. On the side facing away from the stage floor 14a side of the side surfaces 66, an auxiliary support structure 76 is formed in the form of a framework, which of the footprint of the stage floor 14 and of the stage structure 10 in height direction H to about half of the vertical extent of the stage structure 10 extends. This auxiliary support structure 76 gives the stage structure 10 further rigidity.

In FIG. 5 is the stage structure 10 from the rear, ie in the direction of arrow V, in FIG. 2 shown. One looks at the wall truss body 72 of the rear wall 68, on which the stage roof 12 rests with. The lifting towers and behind the viewing plane located parts of the stage structure are in the representation of FIG. 5 not shown.

The rear wall 68 and its wall truss body 72 are formed by vertical handles, horizontal bar and diagonal in a conventional manner by releasable connections. The rear wall 68, the side walls 66 and the auxiliary support structures 76 may be provided on their outer and / or inner side with wall panels.

In FIG. 6 the area of the lifting tower head 46 of the lifting tower 16 projecting into the recess 30 is shown, as it is surrounded by parts of the roof truss body 20.

The recess 30 is, as already described above, enclosed by horizontal bars 24 and vertical stems 22 of the roof truss body 20. Similarly, the lifting tower head 46 as a longitudinal end of the lifting tower 16 and the tower truss body 44 is formed by vertical stems 36 and by horizontal bar 38. The horizontal bar 38 are arranged at the extreme longitudinal end of Hubturmkopfes 46 only in the depth direction T, but not in the width direction B of the stage structure 10. In the width direction B, the two horizontal bars 38 are interconnected by two profile support 78, which span the distance between the two highest horizontal bars 38 approximately in the longitudinal center. At the longitudinal ends of the profile bars 78, here: U-profile bars 78, 78 guide rollers 80 are arranged between the profile bars, which deflects the hoist rope 37 between its two camps. The two bearings of the hoist rope 37 are each provided on a pull rod 82 and 84, respectively. The tie rods 82 and 84 connect horizontal bars 24 in the depth direction with each other and thus act as horizontal bars.

The pull rod 82 lies closer to the middle of the stage than the pull rod 84. For example, a drive motor 86 may be arranged on the pull rod 82 with a winding roll 88 connected to its output shaft for common rotation be. The winding roller 88 forms a first bearing for the hoist cable 37. The hoisting cable 37 is guided around the two guide rollers 80 on the profile carriers 78 starting from the winding roller 88 and fixed in a form-fitting manner to the longitudinal center of the drawbar 84. By operating the drive motor and thereby winding and unwinding of the hoist rope 37 on the winding roll 88 or from this, a lifting and lowering movement of the stage roof 12 in and against the height direction relative to the lifting towers 16 to 19 can be effected. Preferably, a drive motor 86 with a winding roller 88 is provided in the region of each recess of a lifting tower 16 to 19, which are synchronized with each other operatively to allow lifting of the stage roof 12 with orientation parallel to the stage floor 14.

The winding roller 88 can be mechanically secured when lifting the stage roof 12 from the stage floor 14 by a latch against rotation in the unwinding, so then rotation of the winding roll only in a direction of rotation, namely in the Aufwickeldrehsinn is possible. To lower the stage roof, the latch can be brought into disengagement position by an actuator, such as motor or solenoid, so that then also a movement of the winding roller 88 in the Abwickeldrehsinn is possible.

In the present embodiment, ropes (ropes 37 and 39) are shown as tensile force transmitting connection means, which are unwound from or wound onto a winding roll (winding roll 88). In order to allow movement of the stage roof along the height direction at constant speed, the drive motor may be provided with a drive control which takes into account the changing during a winding and unwinding winding diameter and controls the speed of the drive motor accordingly to a substantially constant cable speed.

Alternatively, at least one chain hoist per lifting tower can be provided as connecting means between the lifting tower and the stage roof. The chain hoist can be readily driven at a constant speed, and thus with a simple and inexpensive drive motor control, to achieve the preferred substantially constant chain speed, and hence the preferred substantially constant one To get lifting and lowering speed of the stage roof relative to the lifting tower.

Due to the proposed stage structure, a stage structure with almost any large stage roof without additional external lifting equipment, such as cranes and the like, built and dismantled. During operation of the stage structure as a stage, the hoists of the stage structure 10, so in the example shown, the drive motors 86 with the winding rollers 88, relieved of carrying tasks, since the stage roof rests in the finished raised state on the side walls 66 and on the rear wall 68.

Claims (15)

A stage structure (10) comprising a stage floor (14), a stage roof (12) at least partially overlapping the stage floor (14) and at least one lift tower (16, 17) stationary relative to the stage floor (14) and rising therefrom in a height direction (H) , 18, 19), with which the stage roof (12) is relatively movably connected to change its height (H) to be measured from the stage floor (14) in and against the height direction (H), wherein the stage roof (12) has a recess (12). 30, 32) which, starting from a stage floor (14) facing side (12c) of the stage roof (12) in the height direction (H) in the stage roof (12) into it and into which the at least one lifting tower (16, 17, 18, 19) in the height direction (H) protrudes, wherein the stage roof (12) comprises a at least one recess (30, 32) comprising engaging with releasably interconnected roof truss rods (22, 24, 26) formed roof truss body (20 ) au fweist,
characterized in that the lifting tower (16, 17, 18, 19) at least over a majority of its extension in the height direction (H) by a tower truss body (44) with detachable and separable interconnected tower truss rods (36, 38, 42) is formed. Stage structure according to claim 1,
characterized in that the recess (30, 32) passes through the stage roof (12) in the height direction (H). Stage structure according to claim 1 or 2,
characterized in that the lifting tower (16, 17, 18, 19) protrudes into the recess (30, 32) with all-round play in the direction orthogonal to the height direction (H), in particular the recess (30, 32) passes through. Stage structure according to one of the preceding claims,
characterized in that the connection of the stage roof (12) with the lifting tower (16, 17, 18, 19) exclusively traction-transmitting connecting means (37, 39). Stage structure according to one of the preceding claims,
characterized in that the stage structure, in particular the stage roof (12) and / or the lifting tower (16, 17, 18, 19), a movement drive (86, 88) which is adapted to the stage roof (12) for movement relative to the lifting tower (16, 17, 18, 19) to drive. Stage structure according to claims 4 and 5,
characterized in that the movement drive (86, 88) has a winding roller (88) which can be driven for rotation or a chain hoist with a chain which can be driven for movement. Stage structure according to one of the preceding claims,
characterized in that the connecting means (37, 39) is fixed at one end to a first connecting means bearing (88) and at the other to a second connecting means bearing (84) on the stage roof (12), one between the first (88) and the second connecting means bearing (84 ) located connecting means section on the lifting tower (16, 17, 18, 19) extends. Stage structure according to claim 7,
characterized in that the lifting tower (16, 17, 18, 19) has a deflection means (78) with at least one deflection means (80) supported thereon, via which the connection means section of the first (88) to the second connection means (84) Lying means (37, 39) is guided. Stage structure according to claim 7 or 8, including claim 6,
characterized in that the winding roller (88) and / or the chain hoist is mounted on the stage roof (12) and forms the first connecting means bearing (88). Stage structure according to one of the preceding claims,
characterized in that the stage roof (12) when at a predetermined nominal distance from the stage floor (14) is connected to the stage floor (14) by at least one side wall (66) and / or rear wall (68), wherein preferably the at least one side wall (66) and / or the rear wall (68) comprises a wall truss body (70, 72) with detachably interconnected truss rods, in particular roof truss rods (22, 24, 26). Stage structure according to one of the preceding claims,
characterized in that the stage floor (14) comprises a floor truss body (54) with detachably interconnected truss rods (56, 58, 60), in particular roof truss rods (22, 24, 26). A method of constructing a stage structure, comprising the following steps: Providing a stage floor (14), releasably connecting roof truss rods (22, 24, 26) to a roof truss body (20), the roof truss body (20) having a recess (30, 32) facing away from the stage floor (14) Side (12c) of the stage roof (12) in a height direction (H) from the stage floor (14) extends into the stage roof (12), Erecting a lifting tower (16, 17, 18, 19) stationary relative to the stage floor (14) and stationary in the height direction (H) from the stage floor (14) at the location of the recess (30, 32) of the roof truss body (20), wherein the construction of the lifting tower (16, 17, 18, 19) releasably connecting individual tower truss rods (36, 38, 42) to one Tower truss body (44), wherein the tower truss body (44) extends at least a majority of the dimension of the lift tower (16, 17, 18, 19) in the height direction (H), - When the lifting tower (16, 17, 18, 19) in the height direction (H) in the recess (30, 32) extends into or through it, connecting roof truss body (20) and lifting tower (16, 17 , 18, 19) such that the roof truss body (20) relative to the lifting tower (16, 17, 18, 19) in the height direction (H) is movable, and - Moving the roof truss body (20) in the height direction (H) by increasing the distance between the roof truss body (20) and stage floor (14). Method according to claim 12,
characterized in that the provision of the stage floor (14) comprises detachably connecting truss rods (56, 58, 60), in particular roof truss rods (22, 24, 26), to a floor truss body (54). Method according to claim 12 or 13,
characterized in that , when the distance between the roof truss body (20) and the stage floor (14) corresponds to a predetermined nominal distance truss rods, in particular roof truss rods (22, 24, 26), to form a roof Truss body (20) with the stage floor (14) connecting wall-truss body (70, 72) are detachably connected. Method according to claim 14,
characterized in that it comprises, after the manufacture of the wall truss body (70, 72) for connecting the roof truss body (20) with the ground truss body (54), a disassembly of the lifting tower (16, 17, 18, 19).

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