EP0672793A1 - Shutt-off device - Google Patents

Abstract

The cut-off device has at least one post (10) which is longitudinally displaceably located along a guide anchorable in the ground. By inner pressure application in its vertical extent a first threshold body is alterable and is located at the lower end of the post. At least a first threshold body is formed as a folding bellows. The first threshold body at its upper and lower end has a non-deformable pressure plate. Each post is located longitudinally displaceably in a hollow cylinder with a vertical longitudinal axis sunk into the ground. A floor plate closes the hollow cylinder at its lower end.

Description

The present invention relates to a shut-off device with at least one pile, which is mounted for longitudinal displacement along a guide that can be anchored in the ground.

A known shut-off device has a pile, which is arranged on a piston rod which is slidably mounted in a hydraulic cylinder. The arrangement of hydraulic cylinder, piston rod and pile is arranged centrally in a hollow cylinder. This known construction is complex, provided reliable operation is to be guaranteed.

The object of the invention is to develop a device of the type mentioned in such a way that the structure is simple and works reliably.

In the device of the type mentioned at the outset, this object is achieved according to the invention by a first swelling body at the lower end of the pile or piles which can be changed in its vertical extent by means of internal pressure.

The advantages of the invention lie in particular in the fact that the displaceable pile can be raised and lowered by means of a swelling body arranged under the pile. Since only the inner chamber of the erectile tissue is pressurized, parts that are movable relative to one another do not need to be worked out in a fluid-tight manner. Rather, the erectile tissue forms a shell which is closed towards the pile and which only has to have an opening for the application of internal pressure. In particular, the pile can therefore run with its usual play in its guide; sealing against an actuating fluid, for example, is not necessary.

The erectile tissue is advantageously designed as a bellows. A bellows ensures a change in the longitudinal extent when the internal pressure is applied, while with a suitable choice of material in the transverse dimension there is no significant increase in volume. Advantageously, the bellows has an undeformable pressure plate, for example made of steel, at its upper and lower ends. Alternatively, in some cases it may also be advantageous to form the lower pressure plate of the bellows from a deformable material.

Each pole is particularly preferably slidably mounted in a hollow cylinder which is sunk vertically in the ground and ends at ground level with its upper end. The hollow cylinder protects the moving parts against penetrating soil, which could impair the movability of the pile on the guide. The hollow cylinder can have any cross section. Round and rectangular cross sections have proven to be particularly advantageous.

The hollow cylinder preferably has a base plate at its lower end as protection against penetrating soil. In addition, the base plate represents an abutment for the erectile tissue when the pile is extended.

For lateral guidance, a guide piston is advantageously fastened to each post and is guided so as to be displaceable against the hollow cylinder. The guide piston preferably has a shape which is adapted to the internal dimension of the hollow cylinder with little play, in order to achieve radial support on all sides.

At the upper end of each hollow cylinder, a closure plate is particularly preferably arranged, which has a central bore in which the associated pile is slidably guided. This guide is primarily used to absorb transverse forces if the pile is subjected to appropriate transverse loads.

The flexibility and the dimension of the cavernous body is advantageously chosen so that the cavernous body also presses radially outwards against the hollow cylinder when the pile runs against a stop in a fully extended position and the pressure is then increased accordingly. Due to the radial expansion of the cavernous body in the extended pile position, the pile is frictionally locked against the hollow cylinder. If the erectile tissue is then vented, the erectile tissue first radially resets itself, then the pile sinks under its weight back into its lower starting position and thus presses the erectile tissue into its compressed lower position.

Alternatively, it is also advantageous to reinforce the bellows with fabric so that the bellows cannot expand radially.

With the shut-off device according to the invention, coherent, self-contained walls or protective walls can also be realized. To implement such an embodiment of the invention, it is advantageous to provide a sealing bead between each two adjacent piles, the transverse dimension of which can be changed by applying internal pressure and which fills and seals the intermediate space between the piles. The sealing bead allows the spaces between two adjacent piles to be closed, so that the shut-off device forms a closed wall and can act as a sight and / or water protection.

To produce a retractable and extendable flood protection wall, a shut-off device of the type mentioned at the outset contains a plurality of piles and at least one lateral longitudinal recess in each pile, in each of which a sealing bead runs in the longitudinal direction of the pile and transversely to the longitudinal axis of the pile between a retracted rest position and one extended active position is movable, and wherein the sealing bead in the active position lies tightly against the respective adjacent pile or against a corresponding sealing bead of the adjacent pile.

On the one hand, the piles in the shut-off device according to the invention can be moved in and out individually. Simultaneously or subsequently, the space between two adjacent piles can be closed with an extendable sealing bead. As a result, the shut-off device is particularly suitable as a retractable wall that can be extended, for example in the event of a flood hazard, and then withstands the pressure of the water and the waves like a sheet pile wall. Such a flood protection wall can be erected in areas where dikes cannot be created due to space constraints. Compared to known flood gates, which are used for flood protection at traffic openings, the horizontal extension of the shut-off device according to the invention is not limited from the outset. It also does not require any side supports, it is only anchored in the underbody.

The piles advantageously have a rectangular cross-section, with adjacent piles being arranged adjacent to one another with their narrow sides. However, corner elements are also conceivable in which the cross-section of the pile consists of rectangles arranged at an angle to one another, so that the shut-off device can be adapted, for example, to the course of a bank line.

In order to bridge the largest possible gaps between two piles, it is advantageous to provide two lateral longitudinal recesses on the piles on opposite longitudinal sides, in each of which a sealing bead is arranged. When extending into its active position, each sealing bead then runs against the sealing bead of the adjacent pile.

The interiors of all the first erectile tissue are particularly preferably connected in a communicating manner. As a result, all piles can be extended at the same time by applying pressure to the interior of any first erectile tissue. A single loading device is therefore sufficient to extend all the piles.

The piles advantageously each have at least one drive device for selectively retracting or extending the sealing beads. The drive devices preferably contain a second swellable body which can be resized by applying internal pressure and which is connected in a communicating manner to the associated first swellable body at the lower end of the pile. The sealing beads are advantageously acted upon by such a restoring force that, when the interiors of the first and second swell bodies communicating with one another are pressurized, the sealing beads only move out of the retracted rest position into the active position when the pile has reached a predeterminable extension height. As a result, the sealing beads remain in the retracted rest position when the pile is extended and do not hinder the movement of the pile. Only when the stake is a definable one - in all of it No stake. Only when the pile has reached a predeterminable - generally the maximum - extension height will the sealing beads automatically move into the extended operative position. Conversely, if the internal pressure of the communicating interconnected interiors of the first and second erectile tissue is reduced, the sealing beads first move into their rest position before the pile, without being obstructed by the sealing beads, then sinks back to its lower starting position under its weight. An additional control for the pressurization of the first and second erectile tissue is not necessary.

The sealing bead advantageously consists in cross-section, at least in sections, of an elastically deformable material, so that it rests on the adjacent pile or its sealing bead with the most uniform possible contact pressure.

To erect a flood wall, it is advantageous to guide the sealing bead in the pile so that the sealing bead is fluid-tight in the extended active position with the associated pile. For this purpose, it is also advantageous to provide a flexible closure element between the sealing bead and the pile.

The sealing bead advantageously extends essentially over the entire length of the associated pile in order to form a flood wall formed from piles in a fluid-tight manner at approximately its entire height.

Advantageous developments of the invention are characterized by the features of the subclaims.

Fig. 1

einen Querschnitt einer ersten Ausführungsform der erfindungsgemäßen Absperrvorrichtung zum wahlweisen Absperren von Verkehrsflachen;

Fig. 2

einen Querschnitt einer zweiten Ausführungsform der erfindungsgemäßen Absperrvorrichtung, mit der eine Flutmauer gebildet werden kann;

Fig. 3

einen Querschnitt entlang der Linie II-II in Fig. 2;

Fig. 4

eine Ausschnittsvergrößerung aus Fig. 3, in der die Dichtwülste benachbarter Pfähle in der eingefahrenen Ruhestellung dargestellt sind;

Fig. 5

eine der Fig. 4 entsprechende Ausschnittsvergrößerung aus Fig. 3, bei der die Dichtwülste benachbarter Pfähle in der ausgefahrenen Wirkstellung dargestellt sind;

Fig. 6

einen Querschnitt eines Elements der Absperrvorrichtung gemäß Fig. 3 mit nur einem Pfahl;

Fig. 7

einen Querschnitt entlang der Linie III-III in Fig. 6; und

Fig. 8

einen Querschnitt entlang der Linie IV-IV in Fig. 6.

Exemplary embodiments of the invention are explained below with reference to the attached drawings. Show it:

Fig. 1

a cross section of a first embodiment of the shut-off device according to the invention for the optional shut-off of traffic areas;

Fig. 2

a cross section of a second embodiment of the shut-off device according to the invention, with which a flood wall can be formed;

Fig. 3

a cross section along the line II-II in Fig. 2;

Fig. 4

an enlarged section of Figure 3, in which the sealing beads of adjacent piles are shown in the retracted rest position.

Fig. 5

an enlargement corresponding to FIG. 4 from FIG. 3, in which the sealing beads of adjacent piles are shown in the extended operative position;

Fig. 6

a cross section of an element of the shut-off device according to Figure 3 with only one pile.

Fig. 7

a cross section along the line III-III in Fig. 6; and

Fig. 8

6 shows a cross section along the line IV-IV in FIG. 6.

1 shows a first exemplary embodiment of the shut-off element according to the invention with a single extendable pile 10, which can be used, for example, for the optional shut-off of traffic areas.

The pile 10 has at its lower end a guide piston 12 which is slidably mounted in a hollow cylinder 2 vertically embedded in the ground. At its lower end, the hollow cylinder 2 ends with a base plate 4, which prevents soil from penetrating into the interior of the hollow cylinder 2. The pile 10 has a reduced cross section compared to the hollow cylinder 2, the cross section of the guide piston 12 corresponds to that of the hollow cylinder 2. The pile 10 is shortened compared to the hollow cylinder 2.

Arranged between the base plate 4 of the hollow cylinder 2 and the guide piston 12 of the pile 10 is a first swelling body 16 designed as a bellows, which has a reduced cross-section compared to the hollow cylinder and has a closed surface 17 which presses against the guide piston 12 from below. The bellows 16 can be fastened to the guide piston 12 with fastening means 14. At the lower end, the bellows 16 is fastened to the base plate 4 with further fastening means 18. The base plate 4 has an inlet 5 into the inner chamber 20 of the bellows 16. The inlet 5 permits the fluid to be applied to the inner chamber 20 of the bellows 16, for example compressed air. The bellows 16 is dimensioned such that, in the expanded state, it drives the pile 10 up to a desired extent from the hollow cylinder 2.

On the surface of the earth there is a closure plate 30 which has a central bore 32 in which the pile 10 is guided and which covers the space 6 between the pile 10 and the hollow cylinder 2. For this purpose, the central bore 32 can be provided with a rubber sleeve 34 running around the pile 10. In its lower starting position, the pile 10 is completely retracted into the hollow cylinder 2; the upper end face 11 of the pile 10 then just ends with the closure plate 30 and the surface of the earth.

2 to 8 show illustrations of a further embodiment of the invention. 2 to 5, a shut-off device with two piles 10 is shown. 6 to 8 show a single element of the shut-off device with a pile. A retractable flood wall can be formed by adding additional, appropriately trained and guided piles to the side.

Like the first embodiment described above, the piles 10 each have a guide piston 12 at their lower end, which is slidably mounted in a hollow cylinder 2. The hollow cylinders 2 have the same shape and are arranged parallel and spaced apart. Between a bottom plate 4, which closes the hollow cylinder 2 at its lower end, and the guide piston 12, a first swelling body 16 designed as a bellows is arranged, which corresponds to the first embodiment.

In particular in Fig. 4 it can be clearly seen that the pile 10 is essentially rectangular and adjacent piles 10 are arranged with their narrow sides adjacent to each other. Each pile 10 has a longitudinal recess 13 in each of the two end faces, in which a sealing bead 50 is mounted so as to be displaceable in the transverse direction. The sealing beads 50 are moved by means of second swelling bodies 40 designed as pressure hoses, which are arranged between punches 42. When the interior of the pressure hoses is pressurized, the pressure hoses press against the plunger 42 and move the sealing beads 50 from their retracted rest position into their extended operative position, as will be described in more detail below with reference to FIGS. 4 and 5.

The hoses are connected at their lower end via a pressure line (hose 22) communicating with the interiors 20 of the first swelling bodies 16, which are arranged as bellows and are arranged below the guide piston 12, as in the first embodiment according to FIG. 1.

3 and 8 that in the vertical distance from the plate-shaped guide piston 12 with a circular shape adapted to the hollow cylinder 2, a spacer plate 9 rigidly connected to the post 10 and the guide piston 12 is provided also has a circular outer contour adapted to the hollow cylinder 2 and is used to guide the pile 10 and to absorb transverse forces in its extended position.

An inner profile 62 is provided on the inside of each longitudinal recess 13 of the piles 10 (see FIGS. 4 and 5), on each of which an outer profile 60 is guided so as to be displaceable in the transverse direction. On the outside of each outer profile 60, a sealing bead 50 is fastened, which has a U-shaped metal reinforcement 54 on its rear and sides and a rubber profile 56 that bulges outward on its front. The curvature of the rubber profile 56 flattens towards the upper and lower ends of the sealing bead 50, so that the sealing bead 50 has a rectangular cross-section at the end.

In each case one of two adjacent sealing beads 50 contains a further metal reinforcement 58 with a cross-section in the form of a circular arc on its outside, which accordingly presses the rubber profile 56 of the opposite sealing bead 50 against one another when the adjacent sealing beads 50 run against one another, so that the sealing beads 50 push into one another and press against one another without forming folds . The interior of the sealing beads 50 is compressed to a degree that can be determined by the material cross section and shape of the sealing bead 50. Due to the increased internal pressure in the sealing beads 50, all sealing surfaces are subjected to the same surface pressure, i.e. also those in the upper and lower end region of the sealing beads 50, so that the sealing beads 50 in the extended active position according to FIG. 5 with a uniform surface pressure against one another and against the Side areas of the closure plate 30 are pressed and bring about a fluid-tight seal between the piles 10.

On the outer profile 60, a sealing seal 57 extends around the sealing bead 50, which in the extended active position (see FIG. 5) against the inner surface of the pile 10 at the edges 3 of the Recess 13 is pressed and the ingress of water prevented at this point. A circumferential flexible side seal 52 is provided between the inner profile 62 and the outer profile 60, which completely closes the interior between the outer profile 60 and the inner profile 62. The flexible seal 52 has the function of generating a negative pressure between the inner profile 62 and the outer profile 60 when the sealing beads 50 are extended, which is used to retract the sealing beads 50, as will be described below.

To retract and extend the sealing beads 50, the second swelling body (pressure hose 40) arranged between two punches 42 of the outer profile 60 or inner profile 62 is subjected to internal pressure. The second swelling body (pressure hose 40) is supported on the plunger 42 of the inner profile 62 immovably connected to the pile 10 and presses the outer profile 60 with the sealing bead 50 outwards. Due to the increase in volume between the outer profile 60 and the inner profile 62, a negative pressure is created which increases the further the outer profile 60 is extended with the sealing bead 50. The position of the outer profile 60 with the sealing bead 50 results from the equilibrium of forces which is established due to the overpressure acting on the punches 42 in the second swelling body 40 and the underpressure acting on the outer profile 60 with the sealing bead 50. The negative pressure acting on the outer profile 60 with the sealing bead 50 here generates the restoring force required to retract the sealing bead 50.

7 clearly shows pressure lines 22 through which every second swelling body (pressure hose 40) is connected in a fluid-tight manner to the interior 20 of the first swelling body 16 designed as a bellows. When the interior 20 of the first swellable body 16 is pressurized, the internal pressure of the second swellable body (pressure hoses 40) is therefore also acted upon accordingly. For ventilation, a spiral hose 66 is between Interior 20 of the first cavernous body 16 and a vent valve 64 are provided on the hollow cylinder 2. The spiral hose 66 serves as a flexible air line. It is provided with a quick exhaust valve 64, which allows the air to escape into the upper cavity between the pile 10 and the hollow cylinder 2 when the pressure is released. The overpressure which then arises here escapes from the hollow cylinder 2 through the gap between the opening 32 and the pile 10 and thereby cleans the sealing surfaces.

Below the closure plate 30, an elastic seal 68 is provided which, when the pile 10 is extended, closes the gap between the closure plate 30 and the pile 10 in a fluid-tight manner against the spacer plate 9, which is pressed against the seal 68 under the pressure transmitted by the swelling body 16. In the extended position of the pile 10, the cavity formed by the spacer plate 9 and guide piston 12 also serves to receive the spiral hose 66.

Claims (28)

Shut-off device with at least one pile, which is mounted for longitudinal displacement along a guide that can be anchored in the ground,
characterized by a vertically extending first swellable body (16) at the lower end of the pile (10) or piles (10) by means of internal pressure. Shut-off device according to claim 1,
characterized in that at least one first swelling body (16) is designed as a bellows. Shut-off device according to claim 2,
characterized in that the first swelling body (16) has an undeformable pressure plate at its upper and lower ends. Shut-off device according to one of the preceding claims,
characterized in that each pile (10) is mounted so as to be longitudinally displaceable in a hollow cylinder (2) with a vertical longitudinal axis that can be lowered into the ground. Shut-off device according to claim 4,
characterized by a bottom plate (4) closing the hollow cylinder (2) at its lower end. Shut-off device according to one of claims 4 or 5,
characterized by a guide piston (12) guided in the hollow cylinder (2) on each post (10). Shut-off device according to one of claims 4 to 6,
characterized by a closure plate (30) at the upper end of each hollow cylinder (2) with a central bore (32) in which the associated pile (10) is guided. Shut-off device according to one of claims 4 to 7,
characterized in that each first cavernous body has such a size and flexibility that it is pressed against the hollow cylinder (2) when a predetermined pressure is exceeded to produce a frictional locking. Shut-off device according to one of the preceding claims with at least two piles,
characterized by at least one sealing bead (50) between each two adjacent piles (10), the transverse dimension of which can be changed by applying internal pressure. Shut-off device with a plurality of piles, which are each mounted longitudinally displaceably along parallel spaced guides that can be anchored in the ground, in particular according to one of the preceding claims,
characterized by at least one lateral longitudinal recess (13) in each pile (10), in each of which a sealing bead (50) is arranged, which can be moved transversely to the longitudinal axis of the pile (10) between a retracted rest position and an extended active position, and that Sealing bead (50) bears in the active position on the adjacent pile (10). Shut-off device according to claim 10,
characterized in that at least one pile (10) has two lateral longitudinal recesses (13) on opposite longitudinal sides, in each of which a sealing bead (50) is arranged, which extends into its operative position against the sealing bead (50) of an adjacent pile (10) running. Shut-off device according to one of the preceding claims,
characterized in that the interiors (20) of all the first swelling bodies (16) are communicatively connected to one another. Shut-off device according to one of claims 10 to 12,
characterized by at least one drive device (40, 42) in each pile (10) for selectively extending or retracting the sealing beads (50). Shut-off device according to claim 13,
characterized in that each drive device contains a second swelling body (40) which can be resized by applying internal pressure. Shut-off device according to claim 14,
characterized in that each first erectile tissue (16) is communicatively connected to at least one second erectile tissue (40). Shut-off device according to one of claims 10 to 14,
characterized in that all sealing beads (50) are subjected to a restoring force directed against the longitudinal axis of the pile (10). Shut-off device according to claim 16,
characterized in that the restoring force with which the sealing beads (50) are acted upon is formed by a vacuum chamber (60, 62), the volume of which increases when the sealing beads (50) are extended. Shut-off device according to one of claims 15 to 17,
characterized in that the sealing beads (50) are acted upon by such a restoring force that when the first and second swelling bodies (16, 40) are subjected to internal pressure, the sealing beads (50) remain in the retracted rest position until the pile (10) has a predeterminable one Has reached the exit height. Shut-off device according to one of claims 10 to 18,
characterized in that the sealing bead (50) consists at least in sections of an elastically deformable material in cross section. Shut-off device according to one of claims 10 to 19,
characterized in that each sealing bead (50) is guided in the pile so that there are no gaps in the operative position between the pile (10) and sealing bead (50). Shut-off device according to one of claims 10 to 20,
characterized in that each movable sealing bead (50) is fluid-tight with the associated pile (10). Shut-off device according to claim 21,
characterized by a flexible closure element (52) between the sealing bead (50) and the associated pile (10). Shut-off device according to claim 22 and 17,
characterized in that the flexible closure element (52) closes the vacuum chamber (60, 62) in a fluid-tight manner. Shut-off device according to one of claims 10 to 23,
characterized in that each sealing bead (50) extends substantially over the entire length of the associated pile (10). Shut-off device according to one of claims 10 to 24,
characterized in that the sealing beads (50) consist of a flexible material and have lateral reinforcements (54). Shut-off device according to one of claims 10 to 25,
characterized in that each sealing bead (50) has a metal reinforcement (58) on its outside. Shut-off device according to one of claims 10 to 26,
characterized in that the amount of the internal pressure of the sealing beads (50) exceeds the atmospheric pressure. Shut-off device according to one of claims 10 to 27,
characterized in that a seal (68) is provided below the closure plate (30), against which a spacer plate (9) connected to the guide piston (12) is pressed when the pile (10) is extended and the gap between the pile (10) and the closure plate (30) seals.

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