Flood protection device

Abstract

A flood protection device (1) comprises at least a base element (2) and a wall element (3), wherein the base element (2) is designed to be embedded in the ground and forms a receiving space (4) for the wall element (3). The wall element (3) can assume a first position relative to the base element (2), in which it is completely contained within the receiving space (4), and a second position, in which it projects from the receiving space (4). The flood protection device (1) is designed such that the wall element (3) can be moved from the first position to the second position by introducing a liquid, in particular water, into the receiving space (4).The wall element further has at least one groove (15) and the base element includes at least one pivotable flap (9) which is designed to engage in the groove (15) when the wall element is in the second position in order to hold the wall element in the second position.

Description

[0001] The present invention relates to a flood protection device and the use of a flood protection device for protection against flooding.

[0002] A flood protection device can, for example, be designed as a protective wall that can protect areas near a body of water, such as a river or lake, from flooding. The protective wall makes it possible, for example, to retain and / or dam floodwater.

[0003] It may be desirable to keep access to waterways clear or to protect them from permanent protective structures. For this reason, mobile barriers, for example, are used, which can be erected as needed. However, these must be constructed in good time before a flood occurs.

[0004] For this purpose, DE 44 37 098 A1 discloses a wall element of a flood protection device arranged in a sewer pit, which is equipped with a float. The sewer pit can be flooded to raise the wall element. When the liquid level drops, the wall element sinks back into the sewer pit.

[0005] GB 2 369 387 A describes a wall element of a flood protection structure designed as a floating body within a base body. When water floods the base body, the floating body is raised. The floating body sinks again when the water drains away.

[0006] US 7,972,081 B2 describes a vertically movable wall element of a flood protection device, which can be held in an upper position by means of spring-mounted support elements.

[0007] GB 2 533 948 B describes a vertically movable wall element of a flood protection device which can be held in a raised position by means of a locking element.

[0008] It is therefore an object of the present invention to provide an alternative or improved flood protection device which can be held in an extended position in particular in a simple manner.

[0009] This object is achieved by a flood protection device according to claim 1 and a use of a flood protection device according to claim 13. Further developments are provided in the respective dependent claims. The use of the flood protection device can also be further developed by the features of the flood protection device specified below or in the subclaims, and vice versa.

[0010] A flood protection device according to the invention comprises at least one base element and one wall element, wherein the base element is designed to be introduced into the ground, and the base element forms a receiving space for the wall element, the wall element can assume a first position with respect to the base element in which it is completely received in the receiving space, and a second position in which it protrudes from the receiving space, wherein the flood protection device is designed such that the wall element can be brought from the first position into the second position by introducing a liquid, in particular water, into the receiving space. The wall element further has at least one groove, and the base element comprises at least one pivotable flap which is designed to engage in the groove when the wall element is provided in the second position in order to hold the wall element in the second position.

[0011] The flood protection device is preferably designed such that the introduction of the liquid, in particular water, into the receiving space displaces the wall element from the receiving space and thereby moves it into the second position. In particular, no additional force is required and preferably no further drive means, for example mechanical and / or electrical drive means, are required to move the wall element from the first to the second position. The receiving space is therefore also referred to as a flood chamber and the wall element as a floating body. This makes it possible, for example, to move the wall element from the first to the second position in a simple manner. The flood protection device can in particular be a self-activating protection device.

[0012] Preferably, the first position of the wall element is a position in which the wall element is completely accommodated in the base element, and / or the second position of the wall element is a position in which it is suitable for retaining and / or damming floodwater. In particular, the flood protection device can be designed such that the wall element can be moved from the first to the second position, and vice versa, by a translational movement in the vertical direction. In particular, the wall element preferably does not perform any other movements, such as pivoting or rotational movements.

[0013] Preferably, the groove and the pivotable flap form a holding device designed to hold the wall element in the second position. Further preferably, two grooves are provided on the wall element on opposite sides of the wall element, and the base element has two pivotable flaps on opposite sides of the base element, which are designed to engage the grooves.

[0014] The at least one flap is preferably arranged pivotably about an axis extending parallel to a longitudinal direction of the base element and / or the wall element. Alternatively or additionally, the at least one groove is preferably an elongated recess extending along the longitudinal direction of the base element and / or the wall element. Alternatively or additionally, the flap is preferably provided at the upper end of the base element and / or the groove is provided in a region of the wall element adjacent to a lower end of the wall element, preferably in a region of the wall element corresponding to the lower third of the wall element.

[0015] The pivoting flap(s) for engaging the groove(s) can, for example, hold the wall element in the second position even if the receiving space is no longer sufficiently filled with liquid, e.g., during a receding flood. The pivoting flap is preferably designed as a locking element that holds the wall element in the second position.

[0016] Preferably, the flap is configured such that a free end of the flap rests against a side wall of the wall element when the wall element is in the first position and / or while the wall element moves from the first to the second position. As a result, the pivotable flap can, for example, slide along a side wall of the wall element while the wall element moves from the first to the second position, in particular vertically upward, and engage with the groove in the second position of the wall element.

[0017] The flood protection device preferably further comprises a lifting carriage configured to lift the wall element to release the flap from the groove. The lifting carriage further preferably has a first lever arm and a second lever arm arranged at an angle to one another, the first lever arm being configured to engage the wall element and being shorter than the second lever arm. This makes it possible, for example, to easily release the flap from the groove in order to return the wall element to its first, lowered position.

[0018] The wall element preferably has a cover plate at its upper end, which is flush with an upper end of the base element and / or rests on an upper end of the base element when the wall element is provided in the first position, and / or wherein the cover plate holds the wall element in the first position. This makes it possible, for example, to hold the wall element in the first position in a simple manner. Preferably, the cover plate is provided in the first position in a plane of the upper end of the base element. This makes it possible, for example, to insert the base element with the wall element in the first position at level with the ground. Further preferably, a lower end of the wall element is provided in the first position of the wall element at a distance from a wall of the base element delimiting the receiving space, in particular at a distance in the vertical direction and / or horizontal direction.Preferably, the wall element hangs suspended in the receiving space of the base element in the first position. This provides sufficient space for the liquid to be introduced into the receiving space, for example.

[0019] Preferably, the lifting carriage is designed to engage an underside of the cover plate, and / or the wall element has a recess at its upper end designed to engage with the lifting carriage. A force applied by the lifting carriage to the wall element to lift the wall element upwards can thus be applied to the wall element or the cover plate in a simple manner, for example.

[0020] Preferably, the base element is made of concrete and / or is substantially U-shaped. The base element is preferably a prefabricated element. This allows, for example, a receiving space to be provided that is protected from the surroundings (the subsurface) and yet accessible from above.

[0021] The wall element is preferably designed as a floating body and / or made of aluminum, plastic, or foam. The wall element is preferably designed to be substantially flat, with one surface of the wall element serving in particular to retain floodwater. The surface of the wall element is preferably provided in a plane that extends along a direction of movement of the wall element from the first to the second position and / or vice versa. The wall element can, for example, be part of a protective wall, or a protective wall can be formed by arranging several base elements with respective wall elements adjacent to one another in the subsurface.

[0022] Preferably, the wall element has a widened portion at its lower end, and the receiving space of the base element has a tapered portion at its upper end, wherein the widened portion of the wall element and the tapered portion of the receiving space abut one another in the second position of the wall element and / or are designed to limit movement of the wall element relative to the base element and / or to hold the wall element in the second position, wherein more preferably the at least one groove is provided on the widened portion of the wall element. This makes it possible, for example, to limit movement of the wall element relative to the base element.

[0023] Preferably, the base element has at least one inlet for introducing the liquid into the receiving space and / or at least one outlet for discharging the liquid from the receiving space, wherein the at least one inlet is further preferably connectable to a hydrant and / or the at least one outlet is preferably connectable to the sewer system and / or wherein the at least one outlet is preferably designed to be closable.

[0024] By providing an inlet, such as a water inlet, it is possible, for example, to easily fill the receiving space with liquid to move the wall element into the second position when needed. The outlet, such as a water outlet, makes it possible to easily drain the liquid from the receiving space to return the wall element to the first position.

[0025] The flood protection device preferably comprises a plurality of base elements arranged next to one another with respective wall elements, wherein the base elements are provided next to one another without any connections so that liquid, in particular water, can penetrate into the receiving spaces of the base elements through a gap provided between adjacent base elements, and / or wherein the base elements are arranged next to one another such that the majority of the wall elements form a protective wall in the second position of the wall elements. The base elements are preferably arranged next to one another without any seals. This makes it possible, for example, to provide a flood protection device modularly assembled from individual elements, which can, for example, simplify installation of the same, and / or whereby, for example, a dimension and / or shape of the flood protection device can be designed to be variable.

[0026] An inventive use of a flood protection device described above for flood protection comprises at least one step of introducing a liquid, in particular water, into the receiving space of the at least one base element in order to move the wall element into the second position, wherein the liquid is preferably supplied from a hydrant and / or wherein floodwater penetrates into the receiving space. This makes it possible, for example, to easily move the wall element into the second position, in which it can, for example, retain floodwater.

[0027] Preferably, the use of the flood protection device further comprises a step of introducing at least one base element, preferably a plurality of base elements, into the subsoil, such that the at least one base element is provided with its upper end on a surface of the subsoil and / or such that an upper end of the at least one wall element is provided on a surface of the subsoil. In other words, the base element is preferably introduced into the subsoil at ground level. This makes it possible, for example, to

[0028] Preferably, the at least one wall element provided in the second position is covered with a covering device, in particular in the form of a waterproof tarpaulin, wherein the covering device further preferably additionally covers a region of the subsurface on a side of the at least one wall element facing the floodwater. This makes it possible, for example, to prevent the flood protection device from being undermined.

[0029] Preferably, the use of the flood protection device further comprises a step of discharging the liquid from the at least one receiving space, in particular through an outlet provided on the receiving space which is connected to the sewerage system, in order to bring the wall element from the second to the first position.

[0030] Preferably, the use of the flood protection device further comprises a step of lifting the wall element provided in the second position by means of a lifting truck and releasing the engagement of the flap with the groove. The lifting truck further preferably has a first lever arm and a second lever arm arranged at an angle to one another, wherein the first lever arm is engaged with the wall element and the first lever arm is shorter than the second lever arm. For example, in this step, the second lever arm can be manually operated to lift the wall element with the least possible effort.

[0031] Further features and advantages of the present invention will become apparent from the description of an embodiment with reference to the accompanying drawings. Fig. 1 shows a schematic view of a basic element of a flood protection device according to the invention from the side, wherein a wall element is provided in a first position with respect to the basic element, Fig. 2 shows a schematic, enlarged view of the Fig. 1 with a dashed frame marked section, Fig. 3 shows a schematic, perspective view of a wall element of the in Fig. 1 shown flood protection device, Fig. 4 shows a schematic, perspective view of a basic element of the in Fig. 1 shown flood protection device, Fig. 5 shows a schematic, perspective view of the Fig. 1 bis 4 shown flood protection device, wherein the wall element is provided in a second position with respect to the base element, Fig. 6 shows a schematic view of a lifting truck for use with the in Fig. 1 bis 5 shown flood protection device, and Fig. 7 shows schematically a step of releasing the second position of the wall element in the Fig. 1 bis 6 The flood protection device shown. Fig. 8 - Fig. 12 show the insertion of the click-in clamping element.

[0032] In the following, with reference to the Figuren 1 bis 4 A flood protection device according to an embodiment of the present invention is described. The flood protection device 1 comprises at least a base element 2 and a wall element 3. The base element 2 has a receiving space 4 for receiving the wall element 3 therein, which is also referred to as a flood chamber.

[0033] How best to Fig. 4 As can be seen, the base element 2 is essentially U-shaped. It extends from an upper end 2a to a lower end 2b over a height H. The receiving space 4 of the base element 2 is formed between the legs of the U-shaped base element 2. It is open towards the upper end 2a of the base element 2 and extends from the upper end 2a towards the lower end 2b to a base 5 of the receiving space 4 over a height H1 that is less than the total height H of the base element 2.

[0034] A width B1 of the base element 2 perpendicular to the height H is formed by the two legs of the U-shape of the base element. Perpendicular to the width B1 and the height H, the base element 2 extends over a length L1. The base element preferably has a substantially constant U-shaped cross-section along the length L1.

[0035] The height H of the base element 2 can be, for example, 1.6 meters, the width B1 can be, for example, 0.6 or 0.7 meters, and the length L1 can be, for example, 1 to 2 meters. In the present embodiment, the base element is made of concrete.

[0036] The receiving space 4 of the base element 2 has a tapered section 6 at the upper end 2a of the base element. In other words, the wall of the base element 2 that delimits the receiving space 4 is inclined in a section adjacent to the upper end 2a, so that the receiving space 2 is tapered or wedge-shaped in the direction of the width B1 (width direction) of the base element 2 toward its upper end 2a. The tapered section 6 is preferably formed over the entire length L1 of the base element 2. For example, it can extend over a quarter of the height H1 of the receiving space 4.

[0037] The tapered section 6 can be formed by the wall of the base element 2 delimiting the receiving space 4, as in Fig. 4 Alternatively, a removable clamping element 7 can be attached to the base element, which forms the tapered section 6, as shown in Fig. 1 und 2 shown schematically. The clamping element 7 can be made of a different material than the base element 2, for example, metal or plastic.

[0038] Furthermore, the base element 2 has two anchoring rails or step sections 8 at its upper end 2a, which are provided on opposite sides of the receiving space 4 in the width direction. Each step section 8 preferably extends over the entire length L1 of the base element 2. The step sections 8 can also be formed only in sections along the length L1 of the base element 2. The step sections each form a recess in an upper surface at the upper end 2a of the base element 2.

[0039] Each step section 8 has at least one locking bar or flap 9, which is pivotally mounted on the step section 8 about an axis A. The axis A runs parallel to the longitudinal direction of the base element. The free ends 9a of the flaps 9 protrude into the receiving space 4. The flaps 9 can each be formed over the entire length L1 of the base element 2, or only in sections along the length L1. The flaps 9 are designed to engage in a groove formed in a wall of the wall element 3 (see below) when the wall element is provided in the second position (see Fig. 5 ). In the first position of the wall element, the flaps rest with their free ends 9a against the side walls 10 of the wall element (not shown in the figures). The flaps 9 can also be attached to the clamping element 7 (see Fig. 8 - Fig. 12 ).

[0040] Optionally, the base element 2 has at least one inlet for introducing a liquid, in particular water, into the receiving space 4, e.g., in the form of a water inlet opening (not shown in the figures). The inlet can be connected in a water-conducting manner to a water supply, e.g., a hydrant, so that the receiving space 4 can be flooded with water from the water supply.

[0041] Optionally, the base element 2 has at least one outlet for discharging the liquid, in particular water, from the receiving space 4, e.g., in the form of a water outlet (not shown in the figures). The outlet can be connected to the sewer system in a water-conducting manner in order to drain the water from the receiving space 4 into the sewer system. Preferably, the outlet is designed to be closable, e.g., by means of a slide valve that selectively closes or opens the outlet (not shown in the figures).

[0042] The wall element 3, also referred to as a floating element, is designed to be accommodated in the receiving space 4 of the base element 2. In detail, the wall element 3 extends, as shown in Fig. 3 shown, from an upper end 3a to a lower end 3b over a height H2 which is smaller than the height H1 of the receiving space 4 (see Fig. 1 , 4 ). The side walls 10 of the wall element extending from the upper end 3a to the lower end 3b form surfaces which serve to retain flood water when the wall element is provided in the second position (see Fig. 5 ). Between the two side walls 10, the wall element 3 extends over a width B2 which is smaller than or equal to the width of the receiving space 4 of the base element 2 in the width direction of the base element 2 (see Fig. 4 ).

[0043] Perpendicular to the width B2 and the height H2, the wall element 3 extends over a length L2 which is equal to or smaller than the length L1 of the base element 2 (see Fig. 4 ). Preferably, the width B2 of the wall element 3 is smaller than the height H2 and the length L2 of the wall element, for example, smaller than half the height H2 and / or length L2, so that the wall element is essentially flat.

[0044] At its upper end 3a, the wall element 3 has a driveable cover plate 11. In the width direction, the cover plate 11 protrudes beyond the side walls 10 of the wall element 3. The cover plate 11 is designed to be mounted on the upper end 2a of the base element 2 (see Fig. 4 ) or to support oneself on it when the wall element 3 is in the first position (see Fig. 1 ). Optionally, one or more recesses 17 can be provided at the upper end 3a of the wall element, in particular below the cover plate, which recesses are designed to engage with a lifting carriage 20 described further below (see Fig. 6 ) is / are trained.

[0045] Optionally, the cover plate 11 has downwardly extending projections 12 at its ends delimiting the cover plate 11 in the width direction, as shown in Fig. 2 shown. The projections 12 are designed to engage in recesses 13 formed at the upper end 2a of the base element 2 (see Fig. 2 ). This allows the first position of the wall element (see Fig. 1 ) movement of the wall element 3 in the width direction can be prevented.

[0046] At its lower end 3b, the wall element 3 has a widening section 14 which is complementary to the tapering section 6 of the base element 2 (see Fig. 4 ). In other words, the sections of the side walls 10 adjacent to the lower end 3b in the height direction are inclined or wedge-shaped, so that the width B2 of the wall element 3 increases towards the lower end 3b. The widening section 14 of the wall element 3 is designed such that it is located in the region of the tapered section 6 of the receiving space 4 on the wall of the wall element 2 delimiting the receiving space 4 (see Fig. 4 ) when the wall element 3 is in the second position (see Fig. 5 ).

[0047] The widening section 14 is preferably formed over the entire length L2 of the wall element 3. It can, for example, extend over one-quarter to one-sixth of the height H2 of the wall element 3.

[0048] Furthermore, the wall element 3 has a recess or groove 15 formed in each of the side walls 10. The groove 15 extends along the longitudinal direction of the wall element 3 and is preferably formed over the entire length L2. The groove 15 can also be formed only in sections along the length L2, but preferably in the regions of the length L2 in which the flap(s) 9 of the base element 2 (see Fig. 4 ) is / are formed. With respect to the height H2 of the wall element 3, the groove 15 is formed in a region of the widening section 14. The groove 15 is designed to engage with the flap 9 of the base element 2 (see Fig. 4 ) to be engaged when the wall element 3 is in the second position (see Fig. 5 ).

[0049] The wall element 3 can assume a first position relative to the base element 2 and a second position different from the first position. The first and second positions of the wall element 3 are spaced apart from each other in the height direction of the base element 2, i.e., the wall element can be moved from the first to the second position and vice versa by a movement in the vertical direction (along the height H of the base element), as described below.

[0050] The first position of the wall element 3 is in Fig. 1 shown. In Fig. 1 are the groove 15 of the wall element and the flap 9 of the base element (see Fig. 3, 4 ) not shown. In the first position, the wall element 3 rests with its cover plate 11 on the top side or the upper end 2a of the base element 2, so that the upper end 3a of the wall element 3, or the top side of the cover plate 11, and the upper end 2a of the base element 2 are arranged essentially in one plane. For example, the cover plate 11 can rest on the step sections 8 formed on the base element 2. The wall element 3, with the exception of the cover plate 11, is completely received in the receiving space 4 of the base element 2 in the first position. In detail, the lower end 3b of the wall element 3 is spaced from the base 5 of the receiving space 4 in the height direction, and in the width direction, the side walls 10 of the wall element 3 are spaced from a wall of the base element 2 that delimits the receiving space 4, as shown in Fig. 1 shown. In the first position, the wall element 3 thus hangs suspended in the receiving space 4 of the base element 2 and is held in this position by the cover plate 11.

[0051] The flap 9 formed on the base element 2 is provided in a lowered position in which it rests against the step section 8 and / or projects into the receiving space 4, and does not protrude in the vertical direction beyond the upper end 2a of the wall element 2 (in Fig. 1 not shown). The free ends 9a of the flap 9 can, for example, rest against the side walls 10 of the wall element 10 (not shown in the figures).

[0052] In the first position, the receiving space 4 of the base element 2 is not sealed from the wall element, in particular its cover plate 11. For example, a liquid, in particular water, can penetrate into the receiving space from the top through a gap formed between the cover plate 11 and the upper end 2a and / or the stepped portion 8 of the base element 2 (not shown in the figures).

[0053] In Fig. 5 The second position of the wall element 3 in relation to the base element 2 is shown schematically. In the second position, the wall element 3 is opposite the first position (see Fig. 1 ) is raised in the height direction with respect to the base element 2 and protrudes upwards out of the receiving space 4. The upper end 3a of the wall element 3, or the cover plate 11, is thus spaced vertically (vertically) from the upper end 2a of the base element 2. The side walls 10 protrude upwards from the base element 2. The widened section 14 of the wall element 3 rests against the tapered section 6 of the receiving space 4 of the base element 2 and is preferably wedged with the tapered section 6, so that further upward movement of the wall element 3 relative to the base element 2 is prevented. The widened section 14 and the tapered section 6 thus form a limit or a stop for the upward movement of the wall element 3 with respect to the base element 2 in the vertical direction (height direction).Preferably, the wall element 2 is held in the second position by wedging the widening section 14 in the tapering section 6, or the wedging can increase the stability of the wall element 3 with respect to forces acting in the width direction, e.g. caused by flood water.

[0054] In the second position of the wall element 3, the flap 9 of the base element 2 engages or folds into the groove 15 of the wall element 3, so that the free end 9a of the flap 9 is received in the groove. This holds the wall element 3 in the second position. The at least one flap 9 and the groove 15 together form a holding device that holds the wall element 3 in the second position or prevents the wall element 3 from returning to the first position.

[0055] To use the flood protection device 1, at least one base element 2 is inserted into the subsoil, e.g., into the ground along a lake shore or a river. For this purpose, an excavation can be made along a line where the flood protection device is to be built. The excavation can, for example, be approximately 1.6 meters deep and 0.6 to 0.7 meters wide. The excavation is dimensioned such that the at least one base element 2 can be embedded in the subsoil. The at least one base element 2 is inserted into the subsoil such that it is provided at ground level, ie such that the upper end 2a of the base element 2 is provided in a plane of the surface 16 of the subsoil (soil), as shown in Fig. 7 shown. Preferably, a plurality of base elements 2 are inserted into the subsurface, adjacent to one another in the longitudinal direction. The base elements 2 are provided adjacent to one another without any connection, so that a liquid, in particular water, can penetrate into the receiving spaces 4 of the base elements 2 through a gap provided between adjacent base elements 2 (not shown in the figures).

[0056] In order to move the wall element 3 of the at least one base element 2 from the first into the second position, a liquid, in particular water, is introduced into the receiving space 4. The water can, for example, be supplied from a hydrant, e.g. via the above-described inlet of the base element 2 (not shown in the figures). Alternatively or additionally, a liquid in the form of flood water can penetrate into the receiving space 4, in particular through gaps formed between adjacent base elements and / or between the receiving space 4 of the base element 2 and the wall element 3 (not shown in the figures). As a result of the penetration of the liquid into the receiving space 4, the wall element 3 is moved from the first position (see Fig. 1 ) is displaced from the receiving space 4 and upwards into the second position (see Fig. 5 ). The free ends 9a of the flaps 9 can slide along the side walls 10 of the wall element when the wall element 3 moves into the second position.

[0057] The plurality of base elements 2 are arranged such that the side walls 10 of the wall elements 3, in the second position of the wall elements, together form a protective wall or dam to retain and / or dam floodwater. To move the wall elements 3 from the first to the second position, it is merely necessary to flood the receiving space with a liquid. No additional drive devices, e.g., mechanical and / or electronic, are required to move the wall elements.

[0058] Likewise, no additional guide devices, such as rails, etc., are required to move the wall element from the first to the second position.

[0059] Preferably, in the second position of the wall element 3, the at least one wall element, or the protective wall formed from a plurality of wall elements, is covered with a covering device, e.g., a waterproof tarpaulin (not shown in the figures). Preferably, the covering device is additionally attached to a region of the subsurface on the side of the at least one wall element facing the floodwater, i.e., on the water side. This can, for example, prevent floodwater from penetrating the subsurface and undermining the flood protection device.

[0060] By engaging the flap 9 of the base elements 2 in the groove 15 of the wall elements 3 (see Fig. 3 bis 5 ) The wall elements are held in the second position, even if the liquid is drained from the receiving space, e.g., when the floodwater recedes. The flaps 9 and grooves 15 thus prevent the wall elements 2 from moving back from the second to the first position.

[0061] In order to move the at least one wall element 3 from the second to the first position, for example in order to retract the protective wall formed from a plurality of wall elements 3, the liquid is first discharged from the receiving space 4 of the base element 2, for example by opening the above-mentioned outlet of the base element 2 (not shown in the figures), and the liquid is discharged into the sewer system.

[0062] A lifting truck for use with the flood protection device 1 is in Fig. 6 shown. The lifting truck 20 serves to lift the wall element 3 in order to release the flaps 9 from the grooves 15.

[0063] For this purpose, the lifting carriage 20 in the present embodiment has a first lever arm 21 and a second lever arm 22, which are arranged at an angle to one another and are connected to one another via a roller or wheel 23. The lever arms 21, 22 and the roller 23 are each provided in pairs. At its free ends, the first lever arm 21 has an engagement portion 24, e.g., in the form of a hook, which is designed to engage the wall element 3, for example, on the underside of the cover plate 11. The first lever arm 21 is shorter than the second lever arm 22.

[0064] In order to move the wall element 3 from the second position to the first position, the lifting carriage 20 is moved along the surface 16 of the subsurface to the wall element 3 and engages with the engagement section 24 formed on the first lever arm 21 on the wall element, e.g. on the underside of the cover plate 11 and / or on the recesses 17 formed on the upper end 3a of the wall element, as shown in Fig. 7 shown. The lifting carriage 20 is tilted so that the engagement section 24 points upwards. By pressing down the second lever arm 22, the first lever arm 21 is moved further upwards, so that the wall element 3 is raised, which allows the engagement of the flaps 9 in the grooves 15 to be released and the flaps 9 to be folded away. The wall element 3 can then be moved back down into the receiving space 4 of the wall element 2 until it reaches the first position (see Fig. 1 ) reached.

[0065] The present invention is not limited to the embodiment described above. Rather, modifications of the flood protection device are possible. In particular, the individual elements, such as the base element and / or the wall element, may deviate from the shape and / or size described above.

[0066] In the above embodiment, the holding device is formed by the at least one flap of the base element, which engages in the at least one groove of the wall element. However, another holding device can also be provided, which is designed to hold the wall element in the second position and / or to prevent the wall element from returning to the first position.

Claims

1. A flood protection device comprising at least one base element (2) and one wall element (3), wherein the base element (2) is designed to be embedded in the subsoil, and the base element (2) forms a receiving space (4) for the wall element (3), the wall element (3) can assume a first position with respect to the base element (2), in which it is completely received in the receiving space (4), and a second position in which it protrudes from the receiving space (4), wherein the flood protection device (1) is designed such that the wall element (3) can be brought from the first position into the second position by introducing a liquid, in particular water, into the receiving space (4), and wherein the wall element further comprises at least one groove (15), and the base element comprises at least one pivotable flap (9) designed to engage in the groove (15) when the wall element is provided in the second position,to hold the wall element in the second position.

2. Flood protection device according to claim 1, wherein the flap is designed such that a free end (9a) of the flap (9) abuts against a side wall (10) of the wall element (3) when the wall element is provided in the first position and / or while the wall element moves from the first to the second position.

3. Flood protection device according to claim 1 or 2, further comprising a lifting carriage (20) which is designed to lift the wall element in order to release the engagement of the flap (9) with the groove (15), wherein the lifting carriage (20) preferably has a first lever arm (21) and a second lever arm (22) which are provided at an angle to one another, wherein the first lever arm (21) is designed to engage with the wall element (3) and is shorter than the second lever arm (22).

4. Flood protection device according to one of claims 1 to 3, wherein the wall element (3) has at its upper end (3a) a cover plate (11) which closes with an upper end (2a) of the base element (2) and / or rests on an upper end (2a) of the base element (2) when the wall element (3) is provided in the first position, and / or wherein the cover plate (11) holds the wall element (3) in the first position.

5. Flood protection device according to claim 3 and 4, wherein the lifting carriage is designed to engage an underside of the cover plate (11) and / or wherein the wall element (3) has a recess (17) at its upper end (3a) which is designed to engage with the lifting carriage (20).

6. Flood protection device according to one of claims 1 to 5, wherein the flap (9) is arranged pivotably about an axis which extends parallel to a longitudinal direction (L1, L2) of the base element and / or the wall element and / or wherein the groove (15) is an elongated recess which extends along the longitudinal direction of the base element and / or the wall element.

7. Flood protection device according to one of claims 1 to 6, wherein the flap (9) is provided at the upper end (2a) of the base element and / or wherein the groove (15) is provided in a region of the wall element (3) adjacent to the lower end (3b), preferably in a region of the wall element corresponding to the lower third of the wall element.

8. Flood protection device according to one of claims 1 to 7, wherein the base element (2) is made of concrete and / or is substantially U-shaped, and / or wherein the wall element (3) is designed as a floating body and / or is made of metal, plastic or foam.

9. Flood protection device according to one of claims 1 to 8, wherein the wall element (3) has a widened section (14) at its lower end (3b), and the receiving space (4) of the base element (2) has a tapered section (6) at its upper end (2a), wherein the widened section (14) of the wall element and the tapered section (6) of the receiving space abut one another in the second position of the wall element (3) and / or are designed to limit movement of the wall element (3) with respect to the base element (2) and / or to hold the wall element (3) in the second position, wherein preferably the at least one groove (15) is provided on the widened section (14).

10. Flood protection device according to one of claims 1 to 9, wherein the base element (2) has at least one inlet for introducing the liquid into the receiving space (4) and / or at least one outlet for discharging the liquid from the receiving space (4), wherein the at least one inlet is preferably connectable to a hydrant and / or the at least one outlet is preferably connectable to the sewer system and / or wherein the at least one outlet is preferably designed to be closable.

11. Flood protection device according to one of claims 1 to 9, wherein the clamping element (7) is designed to be clickable and wherein the flap 9 is pivotally attached to the clamping element (7).

12. Flood protection device according to one of claims 1 to 11, comprising a plurality of base elements (2) arranged next to one another with respective wall elements (3), wherein the base elements (2) are provided next to one another without any connection, so that liquid, in particular water, can penetrate into the receiving spaces (4) of the base elements (2) through a gap provided between adjacent base elements (2), and / or wherein the base elements (2) are arranged next to one another in such a way that the plurality of wall elements (3) forms a protective wall in the second position of the wall elements.

13. Use of a flood protection device according to one of claims 1 to 12 for protection against flooding, comprising at least one step of introducing a liquid, in particular water, into the receiving space (4) of the at least one base element (2) in order to bring the wall element (3) into the second position, wherein the liquid is preferably supplied from a hydrant and / or wherein preferably flood water penetrates into the receiving space.

14. Use according to claim 13, further comprising a step of introducing at least one base element (2), preferably a plurality of base elements, into the subsoil, such that the at least one base element (2) is provided with its upper end (2a) on a surface (16) of the subsoil and / or such that an upper end (3a) of the at least one wall element (3) is provided on a surface (16) of the subsoil, and / or wherein the at least one wall element (3) provided in the second position is covered with a covering device, in particular in the form of a waterproof tarpaulin, wherein the covering device preferably additionally covers a region of the subsoil on a side of the at least one wall element which faces the floodwater.

15. Use according to claim 13 or 14, further comprising a step of discharging the liquid from the at least one receiving space (4), in particular through an outlet provided on the receiving space which is connected to the sewerage system, in order to bring the wall element (3) from the second to the first position.

16. Use according to one of claims 13 to 15, further comprising a step of lifting the wall element (3) provided in the second position by means of a lifting truck (20) and releasing the engagement of the flap (9) with the groove (15), wherein the lifting truck (20) preferably has a first lever arm (21) and a second lever arm (22) which are provided at an angle to one another, wherein the first lever arm (21) is brought into engagement with the wall element (3) and the first lever arm (21) is shorter than the second lever arm (22).

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