EP1387025A1 - Foldable cover for large areas - Google Patents

Abstract

The folding umbrella consists of a central mast (1) to which umbrella-arms (8) are directly attached at equal angled distances or attached by a sliding ring (5) consisting of at least two opposite-facing hydraulic cylinders (6). The arms are swiveled by drive mechanisms between a folded-down position and a radial, star-shaped position, and support a folding membrane forming a canopy. Attachment tubes (7) are joined by links to a sliding-ring enclosing the mast.

Description

The invention relates to a foldable screen for covering space-like surfaces and / or for the protection of crowds, such as in sports facilities, Theaters or traffic facilities.

For various occasions, square spaces serve the gathering of more or less crowded people who are then unprotected under standing in the open sky. These are areas on which frequent people gather in large numbers, there is a need to present these people Weather conditions, be it sun or rain, to protect.

The object of the invention is therefore, a removable protection against the weather, For example, sun or rain, for free places in large numbers to create standing persons.

According to the invention, this object is achieved by a foldable screen for covering solved such space-like surfaces, consisting of a central mast with at this at about equal angular intervals untermittelbar or articulated via a sliding ring Screen arms composed by drives between a hinged and a substantially radial, star-shaped position are pivotable, the carry a foldable, a roof-forming membrane and by articulated shots and each formed at least one austeleskopbaren shot of each of these are.

The weather protection according to the invention consists of a foldable and collapsible Screen, due to its telescopic and telescopic Umbrella arms can be formed with such a large diameter that he in capable of affecting thousands of people, for example, from sunlight or Rain, protect.

The screen according to the invention can also be used for industrial and technical applications be used, for example, if it is erfoderlich, larger areas to cover changeable.

The umbrella of the invention provides not only direct weather protection from rain and sun, it is also suitable to improve the climate of the environment, in He was the radiation processes between the earth and in particular the built-up Environment and the sky influenced. The screen according to the invention can also used to cover the winter sky on cold nights in deserts to prevent cooling of the covered area by heat radiation.

According to a preferred embodiment it is provided that the Anlenkschüsse telescoping screen arms through joints with a mast enclosing Sliding ring connected and articulated at a distance from the joints with the one Ends are connected by handlebars whose other ends are above the joints are hinged to the mast.

Conveniently, this sliding ring of at least two opposite Hydraulic cylinders displaceable. Preferably, however, are eight Evenly distributed over the circumference of the mast hydraulic cylinder to move provided the sliding ring.

Conveniently, the mantle of the mast with trough-shaped, on generatrices extending recesses provided in which the hydraulic cylinders are located. Since the hydraulic cylinders are arranged in channel-shaped depressions of the mast are easy to assemble and continue to use for the purpose of Maintenance easily accessible.

To lift the hydraulic cylinders in a simple way by mounting cranes, They are at the outlet sides of the piston rods and the recesses of the Mast provided on its radially inner sides with detachable joint parts, after their coupling, the pivoting of the hydraulic cylinder in the recesses enable. The coupling parts can be made of rods and these consist of absorbing forks.

Conveniently, the hydraulic cylinders are on at the outlet sides of the piston rods located collar or holding pieces with bearings on the upper edge areas the recesses connected so that to reduce the buckling length only the piston rods are acted upon by the sliding forces.

Conveniently, the sliding ring is in the swung-out position of telescopic arms on a stop of the mast, so that the hydraulic cylinder do not need to apply holding forces.

According to another embodiment it is provided that the directly to the mast hinged Anlenkschüsse the telescopic umbrella arms at a distance from the Mast articulated with handlebars that are articulated with a above the Linkage of the arms to the mast on this slidably guided sliding ring are connected. Also, this sliding ring is suitably by at least two hydraulic cylinders movable. To relieve the hydraulic cylinder the sliding ring can turn in the pivoted position of the umbrella arms supported on a mast stop.

According to a preferred embodiment it is provided that from each Anlenkschuß each screen arm telescopes at least three shots, each one after release of locks by at least one hydraulic cylinder be pushed out and retractable, whose piston rod at the inner end of the Anlenkschusses is hinged and its area of the side from which the piston rod exit, with each inner end portion of the telescopic shots is detachable. Such a telescoping system is known for example from EP 0 661 234 B1, to which reference is made for further description.

In a further embodiment of the invention it is provided that with the inner austeleskopierbaren shot connected to the outlet side of a second hydraulic cylinder is, whose piston rod hinged to the inner end of the Anlenkschußes is. This embodiment takes into account the fact that after extension the outer austeleskopierbaren shots on the inner telescopic shot act considerable friction causing moments and that to tighten the Schirms in the fully extended position of all telescopic shots an additional Force is required.

According to another embodiment it is provided that from each Anlenkschuß each screen arm telescopes at least three shots, each one after releasing locks by hydraulic cylinders pushed out and retractable are that the inner telescopic weft at its inner end with the exit side a first hydraulic cylinder can be coupled and that a second plurality of cylinder stages having provided hydraulic cylinder, which consists of at least one guided in an outer cylinder, for this one piston forming cylinder consists, wherein the piston forming cylinder stages and the outer cylinder with its edge regions, from which the pistons or the piston forming cylinders emerge, each with a telescopic weft are coupled, the piston rods both cylinders are hinged to the Anlenkstück the Anlenkschußes and each cylinder or each cylinder stage can be controlled separately. This embodiment makes it possible to extend all telescopic shots at the same time and to collect.

Conveniently, the hydraulic cylinders for moving the telescopic shots detachable in the neutral fiber of the sides.

A particular problem when mounting the screen according to the invention and when folded, it is that the membrane forming the canopy hanging down and can drag over parts of buildings. To such an undesirable Hanging down the membrane is to be avoided in a further embodiment the invention provided that for the orderly folding of the membrane when retracting the telescopic shots, the membrane is firmly connected to ropes at folding points This is about pulleys attached to the collar or edges of the shots to anchor points run at the inner end portions of the retractable shots. By This configuration can be the membrane or the tent roof forming cloth in assemble ordered form, so that a good, close fitting to the mast Folding results.

According to another embodiment, it is provided that the membrane and the Anlenkschüsse as well as the austeleskopierbaren from these shots with Lagerbökken stored rope pulleys, over the live cables to properly gather the membrane when retracting the shots and folding the Anlenkschüsse to the mast and vice versa for the orderly spreading run the membrane.

In a further embodiment of the invention it is provided that in each case a rope of a fixed point of each Anlenkschußes on pulleys at the end regions the Anlenkschußes and austeleskopierbaren from this shot and about the membrane between these pulleys mounted pulleys zig-zag via a pulley at the end of the outer austeleskopierbaren shot and a Pulley on the mast to a tensioning device runs. This tensioning device pulls each time when retracting the telescopic shots flaccid areas of the membrane loop-like, so that an orderly merging and the final Merging when folding the Anlenkschüsse to the mast is done.

The tensioning device may consist of a weight hanging in the mast on the rope or consist of hydraulic or electric winches, due to a constantly acting moments generate the required clamping force.

Appropriately, the bearing blocks when retracting the austeleskopierbaren Shots are driven so block that the ropes continue unhindered run over the pulleys and can be pulled in and out.

In a further embodiment of the invention, it is provided that the membrane Ropes attached to the Anlenkschüsse and austeleskopierbaren shots. By the vote of the length of these ropes on each other can be the form of the clamped Umbrella, for example, in a flat-arched shape determine.

Conveniently, the mast enclosing circular edge of the membrane provided with means for tensioning the edge opposite the mast. The Clamping device may consist of a ring connected to the edge of the membrane exist, which is displaceable in the axial direction and lockable with the mast.

In a further embodiment of the invention it is provided that on the mast above the handlebar flaps are hinged to cover the gathered and attached to the mast membrane are hinged to the mast. These flaps give the folded umbrella a good and attractive appearance and protect the membrane from the weather.

Conveniently, the mast below the telescopic umbrella arms hinged further flaps, which from below to the zusammengeraffte membrane can be folded.

The flaps can be pivoted by hydraulic cylinders.

Conveniently, at least some flaps, for example, every second Flap, at its edges with tines to capture the gathered membrane Mistake.

According to a preferred embodiment it is provided that foldable membranes attached to the mast and to the umbrella arms, which are opened by opening the Screen are automatically stretched and one the inner area of the membrane make up covering second screen. This central smaller screen can To prevent that due to the flow of the opened umbrella roof act on this great pressure and suction forces, the corresponding moments can cause.

In a further embodiment of the invention it is provided that the mast top with a rotatable platform on which a crane with swiveling boom, e.g. a telescopic crane, is arranged. This telescopic crane serves as a service crane, if maintenance work, for example by replacement of hydraulic cylinders, must be executed.

To cover the crane pivoting shells can be provided on the mast who disguise the crane and thereby the good image of the screen neither in the strained still disturb in the folded position.

Conveniently, the upper cover flaps and their pivoting cylinder articulated on a ring which is rotatably mounted on the mast and with a Swivel drive is provided. Due to the rotation of the ring can be the telescopic arms and also moving in sliding ring hydraulic cylinder Expose so that they are accessible to the service crane.

The rotary actuator of the ring can consist of a hydraulic cylinder, because only limited twistability is required.

In a further embodiment of the invention, it is provided that the mast on a Slewing ring is supported. This arrangement is particularly advantageous because it then is possible, the foldable screen by a mounting crane only from one side mount so that the assembly without major swinging of the boom the mounting crane can be done and the larger area to be covered by the screen Surface remains unaffected during assembly.

The mast and / or the turntable can be supported on a pedestal on resting on a foundation.

The installation of the foundation can be problematic if this only with a predetermined shallow depth and installed within an existing building must become. According to a preferred embodiment of the invention is therefore provided that the foundation from a used in a central pit Box consists of, or boxes in star-shaped contiguous trough-shaped excavations are advanced, and that the excavated Spaces between the advanced boxes provided with reinforcements and with Concrete are filled.

Fig. 1

eine Seitenansicht des erfindungsgemäßen faltbaren Schirms, und zwar rechts von der Mittellinie des Masts in der ausgefahrenen und aufgespannten Stellung und links von der Mittellinie in seiner an den Mast angeklappten Stellung,

Fig. 2

eine Draufsicht auf den aufgespannten Schirm,

Fig. 3

einen Schnitt durch den an den Mast angeklappten Schirm längs der Linie lll-lll in Fig. 22,

Fig. 4

eine erste Art der verschwenkbaren Anordnung eines Anlenkschußes eines teleskopierbaren Schirmarms an dem Mast in einer Prinzipskizze,

Fig. 5

eine zweite Art der verschwenkbaren Anordnung eines Anlenkschußes eines Schirmarms an dem Mast in einer Prinzipskizze,

Fig. 6

eine Seitenansicht des den Mast einfassenden Schieberings gemäß Fig. 4,

Fig. 7

eine Draufsicht auf den Schiebering nach Fig. 6,

Fig. 8

einen Ausschnitt des Masts im oberen Bereich einer einen Hydraulikzylinder aufnehmenden rinnenförmigen Ausnehmung,

Fig. 9

einen Schnitt durch einen Anlenkschuß eines Schirmarms mit zwei die teleskopierbaren Schüsse verfahrenden Hydraulikzylindern,

Fig. 10

eine Seitenansicht eines Schirmarms mit zwei ausgefahrenen Teleskopschüssen in einer Prinzipskizze,

Fig. 11

eine schematische Darstellung der Anordnung der Hydraulikzylinder zum Ausschieben und Einziehen der teleskopierbaren Schüsse einer zweiten Ausführungsform,

Fig. 12

einen Schnitt durch eine Seite der Turmspitze mit drehbarer Plattform zur Aufnahme eines Montagekrans und drehbarem Ring zur Anlenkung von Abdeckklappen,

Fig. 13

die Spitze eines äußeren austeleskopierbaren Schusses eines Schirmarms mit einer Einrichtung zur Befestigung der Membran,

Fig. 14

eine Draufsicht auf die Befestigungsvorrichtung nach Fig. 13 in gestreckter Form,

Fig. 15

eine Prinzipskizze zur Erläuterung des ordnungsgemäßen Raffens der Membran während des Einfahrens der teleskopierbaren Schüsse,

Fig. 16

eine Draufsicht auf die teleskopierbaren Schirmarme mit einer zweiten Einrichtung zum ordnungsgemäßen Raffen und Zusammenlegen der Membran während des Einfahrens der Schüsse,

Fig. 17

eine Prinzipskizze zur Erläuterung des Faltens der Membran während des Einfahrens der teleskopierbaren Schüsse,

Fig. 18

einen teilweise an den Anlenkschuß eingefahrenen teleskopierbaren Schuß,

Fig. 19 bis Fig. 22

den faltbaren Schirm in seiner aufgespannten Stellung und in seiner an den Mast angeklappten Stellung mit zwei Zwischenstufen während des Zusammenfaltens,

Fig. 23

einen vergrößerten Ausschnitt aus Fig. 2, der das Spannen der Membran während des Ausfahrens der teleskopierbaren Schüsse der Schirmarme durch Spannseile verdeutlicht,

Fig. 24

einen der Fig. 3 entsprechenden Schnitt durch den an den Mast angeklappten Schirm mit die Membran abdeckenden Abdeckklappen, der die Faltung des Schirm im angeklappten Zustand verdeutlicht,

Fig. 25

eine Draufsicht auf das Fundament des Masts und

Fig. 26

einen Schnitt durch das Fundament und das den Mast tragende turmartige Podest.

An embodiment of the invention will be explained below with reference to the drawing. ln this shows

Fig. 1

a side view of the foldable screen according to the invention, to the right of the center line of the mast in the extended and clamped position and to the left of the center line in its folded to the mast position,

Fig. 2

a top view of the clamped screen,

Fig. 3

a section through the hood folded to the mast along the line III-III in Fig. 22,

Fig. 4

a first type of pivotable arrangement of a Anlenkschußes a telescopic umbrella arm on the mast in a schematic diagram,

Fig. 5

a second type of pivotable arrangement of a Anlenkschußes a Schirmarms on the mast in a schematic diagram,

Fig. 6

a side view of the mast enclosing sliding ring of FIG. 4,

Fig. 7

a plan view of the sliding ring of FIG. 6,

Fig. 8

a detail of the mast in the upper region of a hydraulic cylinder receiving groove-shaped recess,

Fig. 9

a section through a Anlenkschuß a Schirmarms with two telescopic shots moving hydraulic cylinders,

Fig. 10

a side view of a Schirmarms with two extended telescopic shots in a schematic diagram,

Fig. 11

a schematic representation of the arrangement of the hydraulic cylinder for pushing out and retracting the telescopic shots of a second embodiment,

Fig. 12

a section through a side of the spire with a rotatable platform for receiving a crane mounting and rotatable ring for hinging of cover flaps,

Fig. 13

the tip of an outer telescoping shot of a shielding arm with means for attaching the membrane,

Fig. 14

a plan view of the fastening device of FIG. 13 in an elongated form,

Fig. 15

a schematic diagram for explaining the proper shirring of the membrane during the retraction of the telescopic shots,

Fig. 16

a top view of the telescopic umbrella arms with a second means for proper shirring and folding the membrane during the retraction of the shots,

Fig. 17

a schematic diagram for explaining the folding of the membrane during retraction of the telescopic shots,

Fig. 18

a partially retracted to the Anlenkschuß telescopic shot,

FIGS. 19 to 22

the foldable screen in its raised position and in its folded position with the mast, with two intermediate stages during folding,

Fig. 23

2, which illustrates the tensioning of the membrane during extension of the telescopic shots of the umbrella arms by tension cables,

Fig. 24

3 shows a section corresponding to FIG. 3 through the cover flapped onto the mast with the cover flaps covering the membrane, illustrating the folding of the screen in the folded state;

Fig. 25

a top view of the foundation of the mast and

Fig. 26

a section through the foundation and the mast-bearing tower-like pedestal.

The foldable umbrella has a central mast 1 consisting of individual ones bolted tubular sections made of cast steel. The mast 1 is supported by a conventional turntable 2 on a tower-like pedestal 3, the resting on the foundation 4. An existing cast steel sliding ring 5 summarizes the Mast 1 with game. The sliding ring 5 is shown in Fig. 1 in each case in half, and on the right side of the mast in its upper position, in which the extended umbrella arms are in their membrane spanning position and on the left side in the lowered position, in which the umbrella arms with retracted shots are folded to the mast.

The sliding ring 5 is in the illustrated embodiment by eight hydraulic cylinders 6 moved between its upper and lower position.

From each of the eight articulated shots 7 of the shield arms 8 are three telescopic Shots 9, 10, 11 extendable.

At each of the Anlenkschüsse 7 is in the central region in a joint 12th a strut or a handlebar 13 hinged, the other end above the Umbrella arms 8 is articulated in joints 14 in the region of the spire. After this Retracting the telescopic shots 9 to 11 in the Anlenkschuß 7 can be each Anlenkschuß 7 by moving the sliding ring 5 in its lower position Fold in the manner shown on the mast. The one on the right side of the Mast 1 shown Anlenkschuß 7 is indicated by the reference numeral 7 'in its folded Position drawn.

When retracting the telescopic sections 9 to 11 in the Anlenkschuß 7 is the of the umbrella arms 8 spanned membrane merged in an orderly manner and folded, as described in more detail below. Are the Anlenkschüsse 7 with retracted telescopic shots and folded Membrane in her folded to the mast position, the upper cup-shaped cover flaps 15 and the lower cover flaps 16 to the Mast folded, so that the einteleskopierten umbrella arms and the folded membrane completely covered and protected against the weather.

The upper cover flaps 15 are in hinges 17 at one at the top of the Mast's rotatable ring 18 hinged and by hydraulic cylinder 19 between her pivoted out and her folded to the mast position pivoted.

The lower flaps 16 are connected between bearing mounts connected to the mast 20 pivotally mounted and by a hydraulic cylinder 21 between its folded and pivoted to the tower folded position. The end areas the upper and lower cover flaps 15, 16 can be in their on the mast folded position overlap each other.

At the top of a tower platform 24 is rotatably mounted, on which a conventional telescopic crane 22 is arranged. The swiveling and retracted extension arm of this Telescopic crane 22 is perpendicular in his apparent from Fig. 1 rest position and is covered by hinged panels 23. These covers 23 can consist of hinged shells.

In the manner shown in Fig. 1 swung and extended position of the Umbrella arms 8 is supported by the sliding ring 5, to which in the joints 26, the articulation shots 7 of the umbrella arms are deflected, at one above the sliding ring. 5 arranged on the mast 1 stop 25, which consist of an annular collar can, from. The sliding ring 5 is by the moment that the extended telescopic Create shots 9 to 11, held on the stopper 25, so that the sliding ring 5 traversing hydraulic cylinders 6 are relieved.

For pivoting the Anlenkschußes 7 of the shield arms 8 may also another Kinematics are selected, which can be seen for example in FIG. 5. In which Embodiment of FIG. 5 is the Anlenkschuß 7 between bearing cheeks 30th stored, which are firmly connected to the mast 1. In the middle region of the Anlenkschußes 7 are articulated in joints 31 arm 32, the other ends in joints 33 are hinged to a sliding ring 34, which has a portion 35 of Masts bordered and by at least two opposing hydraulic cylinders 36 between its apparent from Fig. 5 upper position and its not shown lower position is displaceable, in which he is not on one shown stop supports and the extended position of the telescopic shots equivalent.

The existing cast steel sliding ring is clearer from Figs. 6 and 7 can be seen. The sliding ring 5 has approximately radially projecting cheeks 40, between where the Anlenkschüsse 7 of the shield arms 1 are mounted on bolts 41. On its underside, the sliding ring 5 recordings 42, in which the piston rods 43 of the hydraulic cylinder 6 engage and where they are fixed. At his inner wall is the sliding ring 5 with strips 44 of a suitable Plastic, such as polyamide, provided over which it is supported on the mast can, if it comes to touch.

As can be seen from Fig. 8, the sliding ring 5 traversing hydraulic cylinder 6 in groove-shaped, axially extending recesses 49 of a section 1 'of the mast 1 arranged. To the hydraulic cylinder 6 in the channel-shaped recesses 49 to be able to bring in by a mounting crane, the cylinder 6 'obliquely suspended by a mounting crane in the recesses 49 introduced become. For this purpose, the cylinders 6 at their upper edges, from which the piston rods 43 emerge, T-shaped a rod 48 which in two open bearing shells 47 can be hung, located on the inside of the upper Edge of the channel-shaped recesses 49 are located. After hanging up the Bar 48 in the bearings 47, the cylinder 6 through the mounting crane in the manner shown, so that they in the trough-shaped recess 49 swing in. In these, the cylinders 6 are then replaced by upper ones flange-shaped collar 45 attached to the upper edges of the trough-shaped Recesses 49 are screwed as shown. This arrangement has the advantage that only the piston rod 43 by the shear forces to buckling is claimed.

From the Anlenkschuß 7 each Schirmarms 8 are the telescopic shots. 9 to 11 in principle pushed out and retractable, as it is EP 0 661 234 B1, to which reference is made here for further details becomes.

With the pivot piece 51 of the Anlenkschußes 7 is apparent in the of Fig. 9 Way the piston rod 52 of the telescoping cylinder 50 is connected. With the inner Collar area of the telescoping cylinder 50 are the individual auszuschiebenden and to be captured shots 11, 10, 9 detachable. Both in the pushed out as well as in the retracted position are the individual shots with each other locked. The lock is always first for the purpose of moving solved.

Compared to the solution known from EP 0 661 234 B1, the solution according to FIG. 9, however, the peculiarity that a second telescoping cylinder 53 with his Collar area in the joint 54 coupled only with the inner telescopic section 9 is, wherein the piston rod 55 of this second Teleskopierzylinders by the joint 56 is connected to the pivot piece 51 of the Anlenkschußes 7. This second one Telescoping cylinder 53 is only when pushing out the inner telescopic section. 9 subjected to oil by the tension forces on the membrane and the Overcoming the friction forces increased forces apply.

In the embodiment according to FIG. 11, two telescoping cylinders 60, 61 are provided intended. The piston rods 62, 63 of both telescoping cylinders 60, 61 are in turn connected to the pivot piece of the Anlenkschußes. The inner collar area of the telescoping cylinder 60 is with the inner austeleskopierbaren shot. 9 connected. The telescoping cylinder 61 is a two-stage Telescoping cylinder, wherein the cylinder 64 containing the piston 64 a piston 66 carries, which forms the piston for the outer cylinder 67. The inner collar areas the cylinders 65, 67 are with the inner ends of the extendable Shots 10, 11 connected. All cylinders, including the step cylinders, are separated controllable, so that the sliding shots 9 to 11 successively or but also extended and confiscated together.

At the tips of the outer telescopic shots 11 pulleys 71 are mounted, run over the ropes 70, at their outer ends about triangular manifolds 72 wear, with which straps 73 are connected to the corner points 74 (Fig. 2) of the umbrella roof forming membrane 75 converge. To the tension of the manifold 72 carries the cable 70 at its inner end an adjusting spindle. This can for example consist of a screw 76, the one Drilled hole of a console 77 and can be tensioned by a nut 78.

The umbrella forming the membrane consists of a reinforced by straps Teflon cloth. The membrane is in the manner shown in FIG. 2 manner by extension the eight telescopic umbrella arms 8 stretched. The membrane 75 is through Ropes 80 with the Anlenkschüssen and the outer collar portions of the telescopic Shots connected.

To order a shirring and folding the membrane without major To allow slack when retracting the telescopic shots, the outer Edge regions of the Anlenkschußes and the telescopic shots with pulleys Be provided 81, run over the ropes 82, one of the fixed points 83 itself located at the inner end portions of the einteleskopierbaren shots. The others Ends of the ropes 82 have their fixed points in the manner on the membrane 75, that these properly gathered when retracting the einteleskopierbaren shots and folded.

In the embodiment according to FIGS. 16 to 18, cables 90 extend from fixed points 91 at the Anlenkschüssen 7 via pulleys 92 at the outer end portions the einteleskopierbaren shots 9 to 11 and between the fixed point 91st and the pulleys 92 attached to the membrane 75 pulleys 93. The rope 90th runs in the manner shown in Fig. 16 way over the pulleys 92 and 93 zig-zag. From the pulley 92, the rope 90 runs over a pulley on the mast 1, wherein to the end of the rope 90 dipping into the mast a weight is attached, the the rope 90 is always under tension.

The pulleys 92 and 93 are mounted in bearing blocks 94, on the one hand with the Collar of austeleskopierbaren shots and on the other hand in the way with the Membrane 75 are connected, that the bearing blocks during retraction of the telescopic Shots in the manner shown in Fig. 18 block drive, but where the free rotation of the pulleys is not disturbed.

The bearing blocks of the membrane-side pulleys 93 are starting from the Mast 1 on lines 97, which between them a triangular strip 96 (Fig. 23) limit. When retracting the telescopic shots drive the pulleys in the manner shown in Fig. 16 in turn on block, with between Corresponding pulleys 30 on the membrane overhead fold lines form, while the membrane on both sides of these fold lines in that of FIG. 17 apparent Way is looped together. When folding the Anlenkschüsse 7 to the mast 1 are also between the driven on block pulleys lying areas of the membrane properly folded.

The folding process can be seen in FIGS. 19 to 22. As Fig. 20 shows, are formed on both sides of the membrane-side pulleys 93 bulging areas 100th

Once the telescopic shots fully retracted and the pivoting shots are hinged to the mast, the upper cup-shaped cover flaps 15 and the lower cover flaps 16 in the manner shown in FIG. 21 way be expanded. In the closed state of the cover flaps 15, 16, this results from Fig. 22 apparent image.

Conversely, the cables 90 tension the diaphragm 75 in that shown in FIG Way when extending the telescopic shots 9, 10, 11 of the shield arms. 8

From Fig. 24 is a of FIG. 3 corresponding section can be seen, the folding of the Membrane 75 illustrated in the folded state.

The upper cover plates 15 pivotable via hydraulic cylinders are on their edges connected to approximately triangular membranes 110, which after the tensioning of the membrane 75 by pivoting the cover flaps 15 in the be tightened from Figs. 2 and 19 apparent manner. In this way results There is a small screen, the middle of the recessed area of the large membrane 75 covered. This middle screen has a favorable effect on the Flow conditions in such a way that the pressure and suction effect of Disturbing the large membrane acting wind currents and thereby on the mast acting moments are reduced.

A particular problem arises when the mast carrying the umbrella within existing buildings and founded on a foundation must be introduced into the ground only to a small depth. In the embodiment according to FIGS. 25 and 25, the mast 1 is above the Rotating ring 2 mounted on a tower-like pedestal 3, on the foundation 4th rests. In order to bring the foundation 4, is characterized by in the illustrated Embodiment of buildings erected on pillars a excavation 120 brought down from which cross-like excavations 121, 122, 123, 124 are excavated. From the excavation 120 are then in the pits 121 to 124 boxes, For example, steel boxes 125 advanced and connected to each other via flanges. Furthermore, in the middle pit 120, a steel box 126 before or used after inserting the side steel boxes. The areas between the advanced steel boxes are then excavated, with reinforcements provided and filled with concrete. The reinforcements are with the Carrying steel boxes connected to the support surface and the weight of the foundation to enlarge. On the foundation or on the middle box 120 is Then the tower-like pedestal 3 is built, on which above the turning ring 2 of the Mast 1 is supported.

The spaces created by the boxes can later become machine rooms to be used.

Claims (34)

Foldable screen for covering space-like areas and / or for the protection of crowds, such as sports venues, theaters or traffic systems, consisting of a central mast with this at approximately equal angular intervals directly or via a sliding ring hinged umbrella arms, which are by drives between a folded and a substantially radial, star-shaped position are pivotable,
which carry a foldable, a roof-forming membrane and
which are formed by articulated shots and in each case at least one austeleskopierbaren shot of each of these. Umbrella according to claim 1, characterized in that the articulated shots of the telescoping umbrella arms are connected by joints to a mast enclosing sliding ring and articulated at a distance from the joints are connected to one ends of links whose other ends are articulated above the joints of the mast , Screen according to claim 2, characterized in that the sliding ring of at least two mutually opposite hydraulic cylinders is displaceable. Screen according to one of claims 1 to 3, characterized in that the mantle of the mast is provided with groove-shaped, extending on generatrices recesses in which the sliding ring traversing hydraulic cylinder are. Umbrella according to claim 3 or 4, characterized in that the hydraulic cylinders are provided at the outlet ends of the piston rods and the recesses of the mast at their radially inner sides with detachable joint parts, which enable the coupling of the hydraulic cylinders in the recesses after their coupling. Screen according to one of claims 3 to 5, characterized in that the hydraulic cylinders are connected via bearings located on the outlet sides of the piston rods collar or holding pieces with bearings at the upper edge regions of the recesses. Screen according to one of claims 1 to 6, characterized in that the sliding ring rests in the pivoted position of the telescopic umbrella arms on a stop of the mast. Umbrella according to claim 1, characterized in that the articulated directly to the mast articulated shots of the telescopic umbrella arms at a distance from the mast are pivotally connected to links which are pivotally connected to a above the articulations of the arms on the mast on this slidably guided sliding ring. Umbrella according to claim 8, characterized in that the sliding ring is displaceable by at least two hydraulic cylinders lying opposite one another. Umbrella according to claim 8 or 9, characterized in that the sliding ring is supported in the pivoted-out position of the umbrella arms on a stop of the mast. Umbrella according to one of claims 1 to 10, characterized in that from each Anlenkschuß each Schirmarms at least three shots are austeleskopierbar, each of which is releasable after release of locks by at least one hydraulic cylinder and retractable, the piston rod is articulated to the inner end of the Anlenkschußes and its region of the side from which the piston rod exits is coupleable to each inner end region of the telescopic shots. Umbrella according to claim 11, characterized in that with the inner austeleskopierbaren shot the outlet side of a second hydraulic cylinder is connected, whose piston rod is articulated to the inner end portion of the Anlenkschußes. Umbrella according to one of claims 1 to 10, characterized in that from each Anlenkschuß each Schirmarms at least three shots are austeleskopierbar, each of which can be pushed and released by releasing locks by hydraulic cylinders, that the inner telescope shot at its inner end with the exit side of a first Hydraulic cylinder coupled and that a second plurality of cylinder stages exhibiting hydraulic cylinder is provided, which consists of at least one guided in an outer cylinder, forming a piston for this cylinder, wherein the piston forming cylinder stages and the outer cylinder with its edge regions from which the piston or The cylinders forming the pistons are each capable of being coupled with a telescopic weft, the piston rods of both cylinders being articulated on the connecting piece of the linking link, and each of the cylinders or cylinder stages being separately controllable. Umbrella according to one of claims 11 to 13, characterized in that the hydraulic cylinders can be coupled in the neutral fiber of the sides of the telescopic shots. Umbrella according to one of claims 1 to 14, characterized in that, for the ordered folding when retracting the telescopic shots, the membrane is connected at folding points firmly with ropes which run over pulleys on the collar or edges of the shots to fixed points at the inner end portions of the retractable shots , Umbrella according to one of claims 1 to 14, characterized in that the membrane and the articulation shots and austeleskopierbaren from these shots are provided with bearing blocks mounted in pulleys, on the live ropes for proper shirring and folding the membrane when retracting the shots and Folding the Anlenkschüsse run to the mast and vice versa for the orderly spreading of the membrane. Umbrella according to claim 16, characterized in that in each case a rope from a fixed point of each Anlenkschußes via pulleys at the end portions of austeleskopierbaren from this shots and on the membrane between the fixed point and these pulleys mounted pulleys zig-zag-shaped on a pulley on End of the outer austeleskopierbaren shot and a pulley on the mast to a jig runs. Umbrella according to claim 17, characterized in that the tensioning device consists of a weight suspended on the rope in the mast or of a hydraulic or electric winch. Umbrella according to one of claims 16 to 18, characterized in that the bearing blocks drive on retraction of austeleskopierbaren shots so block that the ropes continue to run over the pulleys. Umbrella according to one of claims 1 to 19, characterized in that the membrane is attached by ropes to the Anlenkschüsse and austeleskopierbaren shots. Umbrella according to one of the preceding claims, characterized in that the circular edge of the membrane enclosing the mast is provided with means for tensioning the edge with respect to the mast. Umbrella according to claim 21, characterized in that the clamping device consists of a ring connected to the edge of the membrane, which is displaceable in the axial direction and lockable with the mast. Umbrella according to one of the preceding claims, characterized in that hinged on the mast above the handlebar flaps, which are hinged to cover the gathered and applied to the mast membrane to the mast. Umbrella according to one of the preceding claims, characterized in that hinged to the mast below the telescopic umbrella arms flaps, which can be folded from below to the collapsed membrane. Screen according to claim 23 or 24, characterized in that the flaps are pivotable by hydraulic cylinders. Umbrella according to one of claims 23 to 25, characterized in that at least some flaps are provided at their edges with prongs for catching the gathered membrane. Umbrella according to one of the preceding claims, characterized in that foldable membranes are attached to the edges of the upper flaps, which are stretched in the unfolded and tensioned state of the umbrella membrane by pivoting the flaps and form a second screen covering the inner region of the main membrane. Umbrella according to one of the preceding claims, characterized in that the mast top is provided with a rotatable platform on which a crane with a pivotable boom, for example a telescopic crane, is arranged. Umbrella according to Claim 28, characterized in that, to cover the crane, the mast is provided with pivotable shells. Umbrella according to one of the preceding claims, characterized in that the upper cover flaps and their swivel cylinders are articulated on a ring which is rotatably mounted on the mast and provided with a pivot drive. Screen according to claim 30, characterized in that the pivot drive consists of a hydraulic cylinder. Umbrella according to one of the preceding claims, characterized in that the mast is supported on a turntable. Umbrella according to claim 30, characterized in that the mast and / or the turntable is supported on a pedestal which rests on a foundation. Umbrella according to claim 33, characterized in that the foundation consists of a box inserted into a central excavation, from which or from boxes are advanced into star-shaped adjacent gutter-shaped excavations, and that the excavated spaces between the advanced boxes with reinforcements connected to the steel boxes provided and filled with concrete.

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