NL2000546C2 - Dam unit, comprising hydraulically operated telescopic barriers housed in basin, has holes for water to flow through in web portions of barrier sections - Google Patents

Abstract

The web portions of the barrier sections (5-8) contain holes for water to flow through, so that when the basin (4) becomes filled with water, these sections are raised (50) from the nested position into the extended position, one after the other. The basin has a U-shaped cross-section. The barriers can be raised from a lowered position inside the basin to a blocking position protruding above the basin. The barriers comprise nesting telescopic sections which are floating bodies and at least one, preferably all, of these bodies have a U-shaped cross-section, the arms of the pointing upwards. The hydraulic system for moving the barriers up and down comprises a pipeline (10) for connecting the inside of the basis with a water source, in order to fill the basin with water. An independent claim is also included for an arrangement comprising these units, in which the barriers are arranged tightly side by side to form a single continuous barrier construction.

Description

Water barrier unit and assembly of a number of water barrier units

The present invention relates to a flood defense unit comprising: a cross-sectional U-shaped container with a bottom, opposite side walls and an open top; and • turning means that are movable from a position sunk into the bin to a turning state protruding above the bin.

Such a water barrier unit is known from NL 9201601. This publication 10 discloses a water barrier consisting of a cupboard with bottom, side walls and open top sides, which cupboard is placed in a trench in the ground or in a dyke. In this cupboard, turning means are provided with a panel that can be slid up from the cupboard to serve as a flood defense. For a water barrier with a height of 1 m, the panel must have a height such that it can protrude 1 m above the cabinet. In practice, this panel will then be considerably longer in height than that 1 m, because it must also be sufficiently stable in the cabinet. This means that for a flood defense with a height of, for example, 1 m in the ground or in the dike body, a trench must be made that is significantly deeper than 1 m. After all, the panel must be able to fully sink into the box, for which more than 1 meter -20 because the panel has a height of more than 1 meter - and the bottom of the cabinet itself also takes up space. It will be clear that when the flood defense is higher than 1 m, the depth of the trench in the soil or the dike body only increases. A deep trench is not only impractical but is also undesirable with dyke bodies. After all, a deep trench will affect the structure and thus the strength of the dike body. As a matter of fact, for a dyke with a height of approx. 6 m, excavation work must generally not go deeper than 1 m calculated from the top of the dyke body.

More in particular, the present invention relates to a flood defense unit comprising: a U-shaped cross-sectional container with a bottom, opposite side walls and an open top; • turning means that are movable from a position sunk into the bin to a turning state protruding above the bin; 2 00 0 5 4 6 2 • a hydraulic system for supplying the power required to extend the turning means from the bucket in an upward direction; the turning means comprising a plurality of turning members nestable into one another into a nested state and telescoping out of the nested state in the upward direction in a telescopic manner; wherein the hydraulic system comprises a pipeline with which the interior of the bin can be connected to a source of water for filling the bin with water; wherein the retaining members are floating bodies; 10 wherein at least one of the turning members, in particular all but one turning members, has a U-shaped cross-sectional shape, the legs of the U-shaped shape pointing upwards and being mutually connected at the bottom by the body part of the U-shaped shape.

Such a flood defense unit is known from DE-101.43.621. The water-retaining unit known from this consists of a U-shaped container with two retaining members nestable into each other. its lower turning member has a U-shaped cross-section, in which the upper T-shaped turning member can be nested with the vertical portion of the T. In the event of high water, water is supplied at the bottom of the tank, pushing the lower retaining element upwards. The lower turning member is provided on its upper side, on the high water side, with a passage for supplying water to the interior of the lower turning member. As soon as water flows into the interior of the lower retainer via this passage, the T-shaped upper retainer is pushed upwards from the lower retainer. Water will flow into the lower turning member as soon as said passage is exposed to high water. This means that the level of the high water has come to the level at which this passage is located. In practice, however, all kinds of dirt floats on top of the high water that will block said passage, as a result of which the rising of the upper retaining element will be prevented. The operation of this flood defense is therefore not reliable.

The present invention has for its object to provide a water-retaining unit which can be completely sunk into the ground and can be reliably raised from this position sunk into a ground level to a turning height which is relatively relative to the installation depth in the ground. is high.

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The aforementioned object is achieved according to the invention by providing a water-retaining unit comprising: • a cross-sectional U-shaped container with a bottom, opposite side walls and an open top; Turning means which are movable upwards from a position sunk into the bin to a turning state protruding above the bin; • a hydraulic system for supplying the power required to extend the turning means from the bucket in an upward direction; the turning means comprising a plurality of turning members nestable into one another into a nested state and telescoping out of the nested state in the upward direction in a telescopic manner; wherein the hydraulic system comprises a pipeline with which the interior of the bin can be connected to a source of water for filling the bin with water; Wherein the retaining members are floating bodies; wherein at least one of the turning members, in particular all but one turning members, has a U-shaped shape in cross-section, the legs of the U-shaped shape pointing upwards and being mutually connected at the bottom by the body part of the U-shaped shape; Characterized in that the body parts of the U-shaped retaining members are provided with passages for water such that, when the container fills up with water, the retaining members extend successively from the nested state to an extended position.

By building up the turning means from a plurality of turning members that can be nestled into one another into a nested state and can be telescoped out of the beam from that state, it is possible to realize a so-called turning height that is even greater than the height of the U-shaped container to be buried in the ground or in a dyke body.

At least one of the turning members, in particular all but one turning members, has a U-shaped cross-sectional shape, the legs of the U-shaped cross-sectional shape pointing upwards and being interconnected at the bottom by the body part of the U-shaped shape. The number of U-shaped turning members can be, for example, 3, while the fourth turning member, which will be highest in the extended position 4 and can lie in the nested state in the middle - solid, hollow, otherwise shaped, possibly also U-shaped.

The hydraulic system for supplying the force for extending the retaining members comprises a pipeline with which the interior of the container can be connected to a water source. The source of water can be, for example, the water supply network. Since water is present in abundance in the vicinity of the flood defense unit, at least when it is needed, the source of water can also simply be the high water. In that case, the said pipeline can simply open out freely from the dike body on the high water side. At high water this inlet mouth of the pipeline will automatically enter the water and then be able to supply water for the hydraulic system. It is even possible in this case to have the retractors extend fully automatically, autonomously, depending on the height of the water level. After all, when the water reaches a height corresponding to the bottom of the trough, the trough will be able to fill with water via the pipeline and then push the retaining members upwards, when the retaining members are designed as a floating body. The retaining elements will then naturally float upwards under the influence of the rising high water. By providing the body parts of the U-shaped retaining members with passages for water, the retaining members will then successively extend with increasing height of the high water.

It will be clear, however, that the flood defense unit can also be designed to be actively operable, rather than passively automatically accompanying the rising of the high water. With a slide-out system in the form of a hydraulic system, this can be realized, for example, when the hydraulic system further comprises pumping means connected to said pipeline, which pumping means then suck in the water and pump it to the tank to subsequently fill the tank and the retaining members extend successively from the nested position to the desired extended position. The advantage of such an active system is that the flood defense unit can also be preventively extended. Thus, such a flood defense unit is also better able to counteract waves coming over the flood defense, since the flood defense can rise higher above the water level. Incidentally, it is noted that with a hydraulic system and the use of a pump, hydraulic cylinder / piston units could also be used to cause the turning means to extend and possibly to retract. A known hydraulic oil can then be used as hydraulic fluid, but tap water or "surface water" - i.e. water originating from the rising high water or from a ditch or even ground water - can also be used. However, a disadvantage of hydraulic cylinder / piston units is that they take up space, which will easily result in a greater vertical depth of the bucket.

According to a further embodiment, the trough is buried in the ground or in a dyke body.

According to the invention, it is furthermore advantageous if the flood defense unit 10 further comprises locking means which are adapted to lock the return members mutually in an unlockable manner in the extended position. It is thus possible to bring the return members to the extended position without continuing to exert an upward force thereon. When water is used, it is even possible after the turning elements have been brought to the extended position to completely drain off the water used for that purpose. However, it will generally be preferable to keep the water used for raising the retaining members in the basin and in the retaining members because this increases the weight of the flood defense unit and thus the downward pressure on the dike body. At higher downward pressure the dike body is better able to withstand the water.

In order to prevent jamming of the return members during the sliding out, it is advantageous according to the invention: when the inner compartments facing each other of the side walls of the tray, viewed in upward direction, are designed to run towards each other, and when the opening width between the top side of this side wall substantially corresponds to the width of an outer one of the return members; and / or when the facing inner surfaces of the legs of each reversing device, in which a further reversing device can be nested, are designed in an upward direction towards each other, and when the opening width between the upper side of these legs of that reversing device, in which a further turning member is nestable, corresponds to the width of that further turning member.

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Such inclined inner surfaces of the side walls deliberately create a play which prevents the retaining elements from jamming as a result of a possible inclined position.

According to a further aspect, the invention relates to an assembly 5 comprising a number of flood defense units - which may be 1, 2 or more - with a plurality of turning means according to the invention, wherein the plurality of turning means are placed in line with each other and on sealing connect with each other.

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

FIG. 1 is a schematic, perspective cross-sectional view of a number of connected flood defense units according to the invention;

FIG. 2 is a schematic perspective view of a container of a flood defense unit according to the invention; FIG. 3 is a schematic perspective view of two retaining members for a flood defense unit according to the invention;

FIG. 4 is a schematic perspective view, partly in section, of a flood defense unit according to the invention in a partially extended state;

FIG. 5 is a schematic, perspective view, partly in section, of a number of flood defense units according to the invention in fully extended condition; and

Fig. 6, as a detail, a schematic sectional view of an alternative embodiment.

FIG. 1 shows a number of flood defense units according to the invention in a fully nested state, FIG. 4 shows a flood defense unit according to the invention in a partially extended state, wherein a number of the retaining members are still nested with each other; and Fig. 5 shows a number of flood defense units according to the invention in fully extended condition. Figures 2 and 3 show separate elements of a water-retaining unit according to the invention, wherein in Fig. 2 a container is shown and in Fig. 3 two turning members.

The flood defense unit according to the invention is composed of a U-shaped container as shown in Fig. 2 and a plurality of return members 5, 6, 7, 8, of which return member 5 is shown as an example in Fig. 3.

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The U-shaped container is placed in a slot 3 in a dyke body. The U-shaped trough has a bottom 34 and two opposite side walls 35 and 36. The inner surfaces 15, 16 of the side walls 36 and 35 facing each other, when viewed in the vertical upward direction, run towards each other. In this case they are tapered and define a width B at the top of the side walls 35 and 36 in order to be able to place a plurality of trays 4 longitudinally behind each other in a sealing manner, the tray 4 is provided with sealing means at the ends 13, 14, in this case a U-shaped rib 13 and a correspondingly shaped U-shaped groove 14. A supply opening 11 for water is formed at the bottom of the tray. The container 4 can be manufactured from a variety of materials, such as concrete, light concrete, plastic or metal.

FIG. 3 shows two return members 5. It is noted that the return members 6 and 7 are designed essentially the same, but that the dimensions thereof are adapted to be nestable within the return members 5. It will therefore suffice to describe reversing member 5 with reference to Fig. 3.

Turning member 5 has a U-shaped shape with two upwardly pointing legs 37 and 38 which are mutually connected at the bottom by a bottom 39. The bottom 39 is provided with holes 17 for passage of water. The outwardly facing surfaces of the legs 37 and 38 are substantially straight, vertically oriented, namely the flat part 25 with an oblique part 24 at the bottom. The oblique part 24 corresponds to the inclination of the tapered inner surfaces 15. and 16 of the side walls 36 and 35 of container 4. The retainer 5 is in particular designed as a floating body. Turning member 5 can be formed from polystyrene - also known as polystyrene. The floating body 5 can also be made of other suitable materials. Preferably, a light material is used and / or the legs 37, 38 and / or the bottom 39 are hollow to reduce the weight. The external width C of the turning member, measured on the upper side of the legs 37, 38 substantially corresponds to the width B between the upper side of the walls 36 and 35 of the tray 4. When the turning member 5 from the position lying on the If the bottom 34 of the bin 4 is raised, initially only the narrow edges 39, 40 of the side walls 36, 35 of the bin will make contact with the vertical outer surfaces 25 of the walls 37, 38 of retaining member 5. Thus the chance becomes the fact that a turning member 5 is trapped when it rises is considerably reduced. When the 8 turning member 5 comes into a maximally pushed up position, the oblique portions 24 of the outer surfaces of the side walls 37 and 38 will come into contact with the oblique inwardly facing inner surfaces 15 and 16 of the side walls 36 and 35 of the tray 4 By providing sealing material such as rubber strips on the oblique surface parts 24 or on the upper side of the oblique surfaces 15, 16, a sealing abutment can be realized. A number of holes 17 for passage of water are provided in the bottom 39 of turning member 5.

Several return members 5 can be mutually coupled in the longitudinal direction in a sealing manner. This can be realized, for example, by means of the dovetail joints 20, 21 and 22.23. For sealing against passage of water, sealing strips, such as rubber strips, will advantageously be provided.

The inner surfaces 18, 19 of the legs 38, 37 of the turning member 5 facing each other are designed in a similar manner to the facing inner surfaces 15, 16 of the side walls 36, 35 of the tray 4. Because the turning member 5 is inside however, if the trough 4 is nestable, the width D between the upper ends of the legs 38 and 37 is smaller than the width B at the trough 4. The width D substantially corresponds to the external width of the next turning member 6 nestable therein. external width is indicated by C at turning element 5. The width D at turning element 5 can also be indicated as internal width.

Referring to Figures 1, 4 and 5, it can be seen that the flood defense unit is made up of a plurality of nesting elements 5, 6, 7 and 8 which can be nestled into each other and which, moreover, can be nested together again in the tray 4. This nested condition can be seen in particular in FIG. It can be seen in Fig. 4 that the retaining members 6, 7 and 8 are still nested in each other.

Referring to Figures 1, 4 and 5, the operation of the flood defense unit is as follows.

FIG. 1 shows the state of rest in which the return members 5, 6, 7 and 8 are all nested completely in the tray 4. The upper surfaces of the legs of the retaining members herein jointly define a flat surface which connects to the upper surfaces of the side walls of the container 4. Thus, in the nested state, the resting state, a continuous walkable surface is obtained. The side wall of the trough 4 remote from the water side is provided with a trough 9 at the top, along which possibly leaked or flooded water can be discharged.

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When the water level now rises, the pipe 10 protruding from the dyke on the water side will be filled with water and this will flow via the inlet 11 at the bottom into the tank 4. As indicated by arrows 50, the retaining members 5, 6, 7 and 8 will then, if they are designed as floating bodies, be pushed upwards by the water.

As is apparent, in part from Fig. 4, the retaining members 6, 7, 8 will initially remain nested in the retaining member 5. As soon as the turning element 5 has reached its upper position, as shown in Fig. 4, when the high water 30 continues to rise, the turning element 5 will also be filled with water via the holes 17. As a result, the retaining members 6, 7, 8, while initially remaining nested, will float up until the retaining member 6 has reached its highest position. Next, the retaining members 7, 8, while remaining nested, will float up until the retaining member 7 has reached its upper position. Next, if the water 30 continues to rise, the baffle 8 will float up in the baffle 7 until it has reached its upper position. The latter state is shown in Fig. 5.

When the high water 30 drops again, the retaining elements will slide into each other until finally the fully nested condition of Fig. 1 is reached again.

In order to prevent premature sliding / falling back of the return members or to be able to check this sliding / falling back of the return members, it is advantageous according to the invention if a non-return valve is provided in the tube 10.

In order to be able to ensure that the retaining members reach their extended, in particular fully extended, position in a timely manner, it is advantageous according to the invention if the water-retaining unit is furthermore provided with pumping means for sucking in water via the tube 10 and for this water to enter into it under some pressure. deliver the container 4. Thus, under the influence of the pumping action, the turning members can be brought from the nested state to the fully extended state or an intermediate extended state. The water can then be left in the tank 4 and the retaining members, which has the advantage that the dike body 2 into which the flood defense unit is buried is weighted. In order to ensure that the turning units remain in the high position, it may be advantageous to provide locking means, which may, for example, be designed as tumblers, in order to keep the turning members in their high position as soon as they have reached them. In order to then lower the return members again, these locking devices will first have to be unlocked.

A separate outlet 12 is provided to facilitate the flow of water away (see Fig. 2). This outlet 12 can preferably be closed by means of a valve 5 in order to be able to operate it.

Figure 6 shows in detail a modified embodiment of the area VI of Figure 4. For corresponding parts, the same reference numbers are used in Figure 6 as in the embodiment according to Figures 1-5. The change with respect to the embodiment according to Figures 1-5 is that in the embodiment 10 according to Figure 6 a claw-like engagement takes place between the turning member 4 and the turning member 5 when the turning member 5 is in the fully pushed-up state.

The claw-like engagement is obtained by providing the turning member 4 at its upper edge with a downwardly opening recess 60 and the turning member 5 with an upwardly projecting protrusion 61 which is complementary to the recess 60. The recess 60 and the protrusion 61 have complementary oblique surfaces 62 and 63. This provides a guiding function when interlocking protrusion 61 and recess 60 and ensures that the return member 4 and return member 5 also loosen each other when the return member is engaged during the claw-like engagement. 5 sinks back into retaining member 4. The claw-like engagement as such promotes the stability of the flood defense when the reverse members are extended.

It will be clear that the claw-like engagement can also be provided with the other turning members.

Figure 6 furthermore shows very schematically an example of locking means for mutually locking the turning members 4 and 5 (or other turning members). The locking means here comprise a pin 64 which is biased by a spring 67 to slide out of the receptacle 65 from the return member 4 and to shoot into a cavity 68 in the return member 5 when this cavity 68 is aligned with the pin 64. The pin 64 can be retracted into the receptacle 65 by means of an electrically operated magnetic coil for the purpose of unlocking.

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Claims (2)

1] Water-retaining unit comprising: • a U-shaped cross-sectional tank with a bottom, opposite side walls and an open top; • turning means that are movable from a position sunk into the bin to a turning state protruding above the bin; • a hydraulic system for supplying the power required to extend the turning means from the bucket in an upward direction; The turning means comprising a plurality of turning members nestable into one another into a nested state and telescoping out of the nested state in an upward direction in a telescopic manner; wherein the hydraulic system comprises a pipeline with which the interior of the bin can be connected to a source of water for filling the bin with water; wherein the retaining members are floating bodies; at least one of the turning members, in particular all but one turning members, having a U-shaped cross-sectional shape, the legs of the U-shaped shape pointing upwards and being mutually connected at the bottom by the body part of the U-shaped shape; with the characteristic. in that the body parts of the U-shaped retaining members are provided with passages for water such that, when the tank fills up with water, the retaining members extend successively from the nested state to an extended position. 2] Water barrier unit according to one of the preceding claims, wherein the tank is buried in the ground or in a dyke body. 3. Water-retaining unit according to any one of the preceding claims, further comprising locking means adapted to lock the turning members mutually in an unlockable manner in the extended position. Water barrier unit according to one of the preceding claims, wherein the inner surfaces of the side walls of the container facing each other, viewed in upward direction, are designed to run towards each other, and wherein the opening width between the upper sides of these side walls substantially corresponds 5 with the width of an outer one of the return members. Water-retaining unit according to any one of the preceding claims, wherein the inner surfaces of the legs facing each other, in which a further retaining member can be nested, viewed in upward direction, are turned towards each other, and wherein the opening width between the upper sides of these legs of said turning member, in which a further turning member is nestable, corresponds to the width of that further turning member. 6] Water barrier unit according to one of the preceding claims, comprising 4 of 15 those nesting elements that can be nestled into one another, 3 of which have a U-shaped shape. 7. Assembly comprising a number of flood defense units with a plurality of turning means according to any one of the preceding claims, wherein the plurality of turning means are placed in line with each other and connect to each other in a sealing manner. 2 00 0 546