WO2018091854A1 - System for raising/lowering a submersible structure within a volume of water, notably for a mobile swimming pool floor - Google Patents

Abstract

The invention relates to a system (4) for raising/lowering a submersible structure within a volume of water, designed to move the said structure vertically between a low position and a high position, and comprising at least one lifting column (40) formed of a fluidtight and inelastic casing, and a pump connected to the said casing for filling it with water from the volume of water, this lifting column being able to be configured between a retracted configuration in which the casing is empty of water so as to allow the submersible structure to be in the low position, and a deployed configuration in which the casing is filled with water in order to support the submersible structure in the high position. The present invention finds an application in the raising/lowering of a submersible mobile swimming pool floor.

Description

 System for raising / lowering a submersible structure within a volume of water, in particular for a mobile pool floor

 The present invention relates to a system for raising / lowering a submersible structure within a volume of water, and to an associated method for raising / lowering a submersible structure within a volume of water. 'water.

 The invention finds a preferred application, and not limiting, for the rise / fall of a submersible mobile floor swimming pool. However, other applications may be considered, such as the rise / fall of a submerged structure within a volume of natural water, such as a body of water, a lake, a watercourse, an stretch of sea, ...

 In addition, other types of immersed structure can be envisaged, such as an underwater culture structure (oyster bin, ...), a platform, a support structure for marine gear (ber or support cradle for boat, ...).

 In the context of an application dedicated to the ascent / descent of a submersible mobile floor pool basin, it is known to use up / down systems to move vertically such a floor between a submerged position supported on a bottom of the pool (to allow swimming) and a raised position above the water level (to form a protective and insulating blanket, while providing a walking surface)

 As such, a first known up / down system consists of a motorized mechanical system implementing a remote motor operating a cable or chain device via deflection devices, such as pulleys, to move the submersible floor vertically.

 However, this first system has the disadvantage of being expensive, the purchase and maintenance of the engine, and unreliable in a humid environment for the engine and cables or chains.

 A second known ascent / descent system consists of a pneumatic system employing airbags, or ballasts, connected to a pneumatic inflator to inflate / deflate the cushions that are placed under the submersible floor.

However, once inflated, the cushions occupy a volume in the basin which forces to provide a displacement of a portion of the water basin to a buffer tank, which has the disadvantage of being expensive because using additional earthworks to have such a buffer tank near the basin.

 The state of the art can also be illustrated by the teaching of the patent application No. WO 2012/023878 which discloses a system for raising / lowering a floor within a pool, comprising one or more flexible tanks. can be filled with the pool water to lift the floor, with the disadvantage that the flexibility (or elasticity) of the tank does not contribute to increased stability.

 The present invention is intended to overcome the aforementioned drawbacks by providing a rise / fall system that is reliable over time, inexpensive to installation and maintenance and that does not require an additional buffer tank.

 Another object of the invention is to improve stability in the high position, in particular to allow the support of people on the submersible structure in the high position.

 For this purpose, it proposes a system for raising / lowering a submersible structure within a volume of water, this up / down system being provided to vertically move the submersible structure between a low position and at least one position. high, this up / down system being remarkable in that it comprises at least one lifting pillar comprising a sealed and inelastic envelope, and a hydraulic system comprising a pump connected to the casing for a filling of the casing with water from the volume of water, this configurable lift pillar between:

a retracted configuration in which the envelope is empty of water in order to allow the submersible structure to be in a low position; and

an expanded configuration in which the envelope is filled with water in order to support the submersible structure in the high position.

Thus, this up / down system exploits the incompressible nature of the water to form at least one lifting pillar which, when filled with water, constitutes a stable support for the submersible structure, without the need for a buffer tank because it is the water even the volume of water (such as the pool pond water) that is used to fill the lift pillar (s). In addition, this up / down system is reliable because using a pump connected to one or more lifting pillars, without complex mechanism.

 The envelope of the at least one lift pillar may have a generally columnar shape in deployed configuration with a cylindrical peripheral wall, a circular high plateau and a circular low plateau. However, the invention is of course not limited to this columnar form and can be envisaged with any other form that allows to ensure a substantially uniform pressure on the submersible structure to be lifted.

 According to one characteristic, the at least one lifting pillar is provided with at least one upper fastening member provided for attachment under the submersible structure.

 According to another characteristic, the envelope is inelastic by having a stretching rate before rupture (or tearing) of less than 0.5% and preferably less than 0.1%.

 This stretching rate, sometimes referred to as relative elongation, is particularly low in order to have an envelope that does not elastically stretch (or which stretches very little) during the filling of water, under the effect of the pressure exerted on it. by water on the casing, being noted that this pressure can for example reach 0.3 to 0.5 bar.

 According to another characteristic, the envelope comprises at least one layer of woven and sealed material (or fiber membrane) and / or a layer of tight polymeric material, such as polyvinyl chloride (PVC), ethylene-propylene-diene rubber monomer (EPDM), ethylene-vinyl acetate (EVA).

 According to another characteristic, the raising / lowering system comprises several lifting posts connected to the pump and intended to be arranged (or possibly fixed) at different points under the submersible structure, in order to guarantee a stable hold and a balanced rise of the structure. submersible.

According to one characteristic, the hydraulic system comprises a common water collector having an inlet connected to the pump via a first pipe and a plurality of outlets connected to the lifting pillars by distribution pipes, to promote a balancing in the distribution of the pipe. water to the various lifting pillars. Advantageously, the distribution lines are provided with calibrated valves and / or the distribution lines are of lengths and diameters equivalent and predefined, in order to balance the water filling rates between the various lifting pillars.

 The calibrated valves thus make it possible to ensure equivalent water filling rates between the various lifting pillars.

 Alternatively or in addition to these calibrated valves, the secondary pipes are of lengths and diameters equivalent and predefined to balance the pressure losses and thus be able to dispense with such calibrated valves.

 In a particular embodiment, the up / down system comprises a first series of lifting pillars each having the same first height in deployed configuration, and a second series of lifting pillars each having the same second height in deployed configuration, this second height being distinct. of the first height, so that the up / down system is shaped to position the submersible structure at a first up position under the action of the only lift pillars of the first series, and at a second up position under the action of the only pillars of the second series.

 Advantageously, the submersible structure is non-floating, in particular after a fixation (or addition) of at least one weighting element on the submersible structure to cancel a flotation and make the submersible structure not floating or flowing.

 Thus, when the hydraulic system is controlled to empty the pillar (s) elevator (s), the weight of the submersible structure will help push the (s) pillar (s) lift (s) to the retracted configuration.

 Advantageously, the assembly consisting of the submersible structure and the up / down system is configured to have a permissible load, once the submersible structure in high position, at least 150 kilograms per square meter. Such an allowable load corresponds to the load (weight per square meter) which can be based on the submersible structure, and this minimum of 150 kilograms per square meter being in accordance with the standard in force in France for terraces.

In an advantageous embodiment, the hydraulic system is configured to circulate water in two directions: - A filling direction in which the water flows from the volume of water to the at least one lifting pillar for a filling of its water envelope to ensure a rise of the submersible structure; and

 - A dump direction in which the water flows from the at least one lifting pillar to the volume of water for emptying its casing in water to ensure a descent of the submersible structure.

 According to one possibility, the up / down system comprises a control system which comprises a control module which controls the hydraulic system to control the circulation of the water in one or other of the two directions of circulation and thus for control the ascent / descent of the submersible structure.

 According to another possibility, the control system comprises, connected to the control module, at least one high detection system configured to detect the submersible structure in its upper position and / or at least one low detection system configured to detect the submersible structure in its low position, so that the control module controls the hydraulic system according to the detection performed by the at least one detection system.

 The present invention also relates to a swimming pool comprising a swimming pool having a submersible mobile floor, and an up / down system designed to move this floor vertically between a low immersed position and a raised upper position, this swimming pool being remarkable in that the Raising / lowering system according to the invention, wherein the pump is connected to both the lifting pillar (s) and the basin for filling the lifting pillar (s) with water from the basin.

 Thus, the invention makes it easy and reliable to ensure the vertical movement of a mobile pool floor.

 Advantageously, the at least lifting pillar is fixed under the floor by means of at least one upper fastening member.

 In a particular embodiment, the pool comprises:

 a bottom structure comprising at least a plurality of transverse joists arranged side by side; and

- A peripheral structure supported by the bottom structure and comprising at least vertical posts on which are fixed side panels; wherein the pool further comprises at least one sealing layer disposed below the bottom structure and around the peripheral structure to seal the basin;

and wherein the movable floor rests freely on the bottom structure in its low submerged position and the at least one lift pillar is disposed between transverse joists of the bottom structure.

 According to one possibility, the bottom structure further comprises at least one longitudinal tongue intersecting the transverse joists and fixed on these transverse joists, to increase the longitudinal mechanical strength of the bottom structure.

 According to another possibility, the floor comprises a support structure composed of transverse beams and longitudinal beams crossing and fixed together, and a platform fixed on the support structure, where the support structure rests freely on the bottom structure in the low position immersed.

 According to one possibility, the platform is composed of an assembly of blades and / or traffic slabs fixed on the support structure.

 In a particular embodiment, the floor further comprises at least one ballast element so that the floor is not floating.

 The addition of at least one ballast element is advantageous for making the floor non-floating, or flowing, when the main elements of the floor (transverse beams, longitudinal beams and platform) are made of materials providing buoyancy, such as wood, composite or plastic material, or aluminum. The ballast element or elements will thus cancel this buoyancy and make the floor non-floating.

 This or these weighting elements can be placed on the support structure of the floor, below the blades, and can for example be made in the form of concrete slabs.

 Alternatively or additionally, this or these weighting elements may be placed on the blades, in particular being made in the form of traffic slabs, such as fiber concrete slabs or tile slabs.

On the other hand, if the platform is made of heavy materials that contribute to the floor being non-floating, which would be the case with a platform consisting of fiber concrete slabs or tile slabs, so it would not be necessary to add additional ballast.

 Advantageously, the floor supports guiding devices provided with rolling members shaped to roll along the peripheral structure, and in particular along some of the vertical posts, during the vertical displacements of the floor, for a guidance of the floor along the side panels when climbing / descending.

 According to one characteristic, the at least one lifting pillar is fixed on the bottom structure. Alternatively, the at least one lift post is weighted.

 According to another characteristic, the basin comprises a peripheral upper lip forming a stop for the floor in its raised upper position.

 According to another characteristic, the pump of the hydraulic system constitutes a counter-current swimming pump which is connected, via a distribution valve, to both the lifting pillar (s) and to a swimming mouth opening into the basin to provide a counter-current swim function, the dispensing valve being operable to distribute the water either towards the lift pillar or toward said swim mouth.

 Advantageously, the dispensing valve is a controlled valve or solenoid valve which can be operated remotely, either via wired communication or via wireless communication, by radio communication, for example by UHF radio waves (Bluetooth ™, ZigBee ™,. ..).

 Other characteristics and advantages of the present invention will appear on reading the detailed description below, of an example of non-limiting implementation, with reference to the appended figures in which:

 - Figure 1 is a schematic perspective view of a swimming pool according to the invention, where only the pool is illustrated, and where the up / down system and the mobile submersible floor are not yet in place;

- Figure 2 is a schematic perspective view of the pool of Figure 1, where the up / down system is installed with lifting pillars in retracted configuration, where the mobile submersible floor is not yet in place, and where the pump and steering system are illustrated;

 - Figure 3 is a schematic perspective view of the pool of Figures 1 and 2, where the up / down system is installed with lifting pillars shown for illustrative purposes deployed despite the absence of water, where the floor submersible mobile is not yet in place, and where the pump and steering system are illustrated;

- Figure 4 is a schematic perspective view of the pool of Figures 1 to 3, wherein the up / down system is installed (but not visible), and where the mobile submersible floor is in place and in the low position;

 - Figure 5 is a schematic perspective view of the pool of Figures 1 to 4, where the up / down system is installed (but not visible), and where the mobile submersible floor is in place and in the high position;

 - Figure 6 is a schematic perspective view of the mobile submersible floor of the pool, with some blades removed to view the support structure;

 - Figure 7 is a schematic perspective view of a lifting pillar provided with its lower and upper fasteners;

 - Figure 8 is a schematic perspective view of a common water collector provided for the invention;

 - Figure 9 is a schematic partial sectional side view of the mobile submersible floor in the upper position and abutting on the edge of the pool basin, with a guide device whose rolling member rolls on a side wall of the pool pool.

 With reference to FIG. 1, a swimming pool 1 in accordance with the invention comprises a pool 10 composed of the assembly of wooden elements.

 The basin 10 comprises a bottom structure 2 which comprises a plurality of transverse joists 21 arranged side by side and at regular intervals and one or more longitudinal joists 22 intersecting the transverse joists and fixed on the transverse joists 21.

The transverse joists 21 and the longitudinal jamb 22 are made of wood and can be assembled by screwing or bolting, possibly with the use of brackets or brackets. The basin 10 comprises a peripheral structure 3 supported by the bottom structure 2 and comprising:

 a lower frame 31 fixed to the bottom structure 2;

 an upper frame 32 on which is fixed a peripheral upper lip 33;

 vertical posts 34 fixed between the lower frame 31 and the upper frame 32;

 - Side panels 35 fixed on the posts 34 and between the lower frame 31 and the upper frame 32.

 The lower frame 31 and the upper frame 32 are composed of the assembly of wooden profiles, which can be assembled by screwing and / or bolting and / or tenon / mortise connection, possibly with the use of brackets or brackets .

 The vertical posts 34 are made of wood, and are fixed on the lower frame 31 and on the upper frame 32 assembled by screwing and / or bolting and / or tenon / mortise connection, possibly with the use of brackets or brackets .

 The side panels 35 are made of wood, and may comprise several wood strips fixed on beams, and these side panels 35 are fixed to the vertical posts 34 by screwing or bolting, possibly with the use of brackets or brackets .

 As can be seen in FIG. 1, after the installation of the pelvis 10, the support legs 36 can be installed in such a way as to stabilize the pelvis 10 better. These holding legs 36 have a lower end which rests on the floor of the hole previously hollowed, and an upper end which is fixed on the upper frame 32 by means of fixing such as glue, screws, or nails.

 These holding legs 36 are preferably located at certain vertical posts 34 thus making it possible to provide a fixed support for each of these vertical posts 34.

 The pool 1 also comprises a sealing layer 1 1

(Partially visible in Figure 9) disposed below the bottom structure 2 and around the peripheral structure 3 to seal the basin 10.

 The pool 1 also includes a layer of geotextile fabric 12

(partially visible in Figure 9) disposed below the layer sealing 1 1; the sealing layer 1 1 is thus interposed between the layer of geotextile fabric 12 and the basin 10.

 Once dug a hole in the ground to receive the basin 10, the layer of geotextile fabric 12 is deposited on the bottom and sides of the hole. This layer of geotextile fabric 12 makes it possible to avoid subsequent inconveniences that may be caused, such as the growth of roots that may damage the basin 10 and / or the sealing layer 11.

 The layer of geotextile fabric 12 may be cut to adopt the dimensions of the basin, and its thickness may for example vary from 0.5 to 5 millimeters.

 The sealing layer 11 gives the impermeability to the basin 10 and prevents water from escaping from the pool 10. This sealing layer 11 is made of rubber or any other waterproof plastic material suitable for use in the pool. skilled in the art such as polyvinyl chloride or polyethylene.

 This sealing layer January 1 can be cut to the desired dimensions, and has a thickness for example between 1 and 5 millimeters. It is deposited so as to cover the layer of geotextile fabric 12 previously laid, following the contour of the hole in which the basin 1 is placed.

 In a preferred embodiment, another layer of geotextile fabric (not shown) may be deposited so as to cover the sealing layer January 1. This other layer of geotextile fabric, in addition to protecting the sealing layer 1 1 of the mechanical friction of the basin 10, avoids damaging this sealing layer 1 1 during the installation of the bottom structure 2 and the peripheral structure 3.

 Once its various layers 1 1, 12 put in place, it is necessary to set up the bottom structure 2 and the peripheral structure 3. As shown in Figure 1, it is conceivable that the bottom structure 2 rests on studs or feet 23 distributed over the sealing layer 1 1.

When the structure of the basin 10 is made, the sealing layer 11 and the layer of geotextile fabric 12 are folded over the upper frame 32 so as to form a seal. The upper edges of these layers January 1, 12 are then blocked by means of attachment means provided for this purpose and located at the upper part of the upper frame 32. These attachment means can be in several forms, such as by a rail placed on the upper part of the upper frame 32 or on the lip 33 fixed on the upper part of the upper frame 32. These layers 1 1, 12 can also be folded on the upper frame 32 before fixing the lip 33 which allows to maintain these layers 1 1, 12 in place.

 With reference to FIG. 2, the pool 1 incorporates an up / down system 4 which is designed to vertically move a mobile submersible floor 5 (described later) between a low immersed position and a raised upper position.

 This up / down system 4 comprises several lifting pillars 40 arranged between transverse joists 21 of the bottom structure 2. In the example illustrated, the up / down system 4 comprises six lifting pillars 40 intended to be fixed at different points. under the floor 5, it being stated that the number and the positioning of the lifting pillars 40 will essentially depend on the dimensions and shapes of the basin 1 and the floor 5.

 Each lifting pillar 40 is formed of a sealed and inelastic envelope, in particular an envelope comprising at least one layer of woven and sealed material, and comprises a water inlet 41 preferably located at its base or in the lower part.

 Each lifting pillar 40 is provided with at least one upper fixing member for fixing under the floor 5, in order to fix the lifting pillar 40 under the floor 5. In the example of FIG. 7, the lifting pillar 40 comprises its top (or upper part) several straps 42 forming such upper fasteners.

 Each lifting pillar 40 is provided with at least one lower fixing member for attachment to the bottom structure 2, in order to fix the lifting pillar 40 on this bottom structure 2. In the example of FIG. 7, the pillar elevator 40 comprises at its base (or in the lower part) several straps 43 forming such lower fasteners.

With reference to FIGS. 2 and 3, the up / down system 4 also comprises a hydraulic system 7 connected, on the one hand, to the water inlets 41 of the lifting pillars 40 and, on the other hand, to the basin 10, where this hydraulic system 7 is configured to circulate the water in two directions: - a filling direction in which water flows from the basin 10 to the lifting pillars 40 for filling their envelopes with water to ensure a rise of floor 5; and - A dump direction in which the water flows from the lifting pillars 40 to the basin 10 for emptying their envelopes in water to ensure a descent of the floor 5.

 With reference to FIGS. 2 and 3, this hydraulic system 7 comprises a connected pump 70:

 at the water inlets 41 of the lifting pillars 40 via a first pipe 71; and

 at the basin 10 via a second pipe 72.

 With reference to FIG. 8, the first pipe 71 can be connected to an inlet of a common water collector 73, where this common water collector 73 has several outlets 74 connected to the lifting pillars 40 by distribution pipes 75 .

 These distribution pipes 75 may be provided with calibrated valves and / or have the same lengths and diameters, to ensure an equivalent water filling rate between the various lifting pillars 40. These distribution lines 75 may be, by way of example non-limiting, flexible pipes of diameter 32 millimeters, while the first pipe 71 and the second pipe 72 may be flexible pipes of diameter 64 millimeters. The diameters of the distribution lines 75 and the first and second lines 71, 72 will preferably be based on the dimensions of the lift pillars 40 and the desired time to move the floor 5 from the low position to the high position.

 To ensure the filling and emptying of the lifting pillars 40, this hydraulic system can comprise:

 - either a reversible pump (or pump with two directions of circulation) commanded;

 or a non-reversible pump associated with a system of controlled valves (such as solenoid valves) which controls a reversal of the flow direction of the water entering the pump.

The pump 70 may for example consist of a counter-current swimming pump which is connected, via a dispensing valve (not shown), to both the lifting pillars 40 and to a swimming mouth (not shown) opening in the basin 10 to provide a counter-current swim function, this dispensing valve being operable (such as a controlled valve or solenoid valve) to distribute the water either in steering of the lifting pillars 40 in the direction of the swimming mouth, according to the desired use, namely the lifting of the floor 5 or swimming against the current.

 Referring to Figures 2 and 3, the up / down system 4 further comprises a control system 8 which comprises a control module 80 (such as a processor or electronic controller) which controls the hydraulic system 7 to control the circulation water in one or other of the two directions of circulation and thus to control the rise / fall of the floor 5.

 Thus, this control module 80 controls:

- the reversible pump controlled;

- the system of controlled valves.

 This control system 8 may also comprise at least one high detection system 81, 82 configured to detect the floor 5 in its high position, where this high detection system 81, 82 is connected to the control module 80 which controls the hydraulic system. 7 depending on the detection performed by this high detection system 81, 82.

 With reference to FIGS. 2 and 3, the high detection system comprises an optical or mechanical position sensor 81 disposed on the basin 10, and more specifically on the supporting structure 3 at the top, as for example on the upper frame 32 or on the the coping 33.

 Alternatively or additionally, the high detection system comprises a pressure sensor 82 configured to detect whether the pressure in the lift pillars 40 reaches a predefined high value. Indeed, when the floor 5 is in the upper position, resting against the lip 33, the pressure in the lifting pillars 40 increases to reach this high value. This pressure sensor 83 may for example be placed on the first pipe 71 or on the second pipe 72.

 Thus, during the rise of the floor 5, the control module 80 controls the hydraulic system 7 for a flow of water in the direction of filling, until the upper detection system 81, 82 detects the high position of the floor 5, as for example until the position sensor 81 detects the floor 5 in high position and / or until the pressure sensor 82 detects the high value associated with this high position of the floor 5.

This control system 8 may also comprise at least one low detection system 83 configured to detect the floor 5 in its low position, where this low detection system 83 is connected to the control module 80 which controls the hydraulic system 7 according to the detection performed by the low detection system 83.

 With reference to FIGS. 2 and 3, the low detection system comprises an optical or mechanical position sensor 83 placed on the basin 10, and more specifically on the supporting structure 3 at the bottom, as for example on the lower frame 32 or on the supporting structure 2.

 Thus, during the descent of the floor 5, the control module 80 controls the hydraulic system 7 for a flow of water in the emptying direction, until the bottom detection system 83 detects the low position of the floor 5 .

 With reference to FIG. 2, each lifting pillar 40 can occupy a retracted configuration in which the casing (or the lifting pillar) is empty of water in order to allow the floor 5 to be in the low immersed position.

 With reference to FIG. 3, each lifting pillar 40 can occupy a deployed configuration in which the envelope (or the lifting pillar) is filled with water of the basin 10 (thanks to the pump) in order to support the floor 5 in raised up position. .

 With reference to FIG. 6, the floor 5 comprises:

a support structure 50 of wood which is composed of transverse beams 51 and longitudinal beams 52 crossing and fixed together, and

 a platform consisting of an assembly of blades 53 fixed to the support structure 5, for example between the transverse beams 51.

 The transverse beams 51, the longitudinal beams 52 and the blades 53 are made of wood, and are fixed together by screwing or bolting, possibly with the use of brackets or brackets.

 So that the floor 5 is not floating, it is expected that the floor

5 further incorporates at least weighting element (not shown).

 This weighting element may be fixed on the support structure 50, below the blades 53. The or each ballast element may for example be a concrete slab.

As a variant or in addition, the weighting elements may be made in the form of traffic slabs, such as fiber-reinforced concrete slabs or fixed tile slabs (in particular by gluing) onto the slabs. 53. These traffic slabs constitute decorative elements fulfilling a supporting role to traffic on the floor.

 It should be noted that the platform could be composed of these traffic slabs fixed directly on the support structure 5, instead of the blades 53, which would make it possible to dispense with complementary weighting element.

 The floor 5 may also incorporate an access hatch (not shown) to be able to pass below the floor 5 and thus carry out maintenance operations.

 Each lifting pillar 40 is fixed under the floor 5, and more precisely is fixed on the support structure 50, below the blades 53.

 At the installation, the floor 5 is placed inside the basin 10 on the bottom structure 2, so that the floor 5 rests freely on the bottom structure 2 in the low submerged position illustrated in FIG. the lift pillars 40 in retracted configuration. When the floor 5 is in the low immersed position, the pillars 40 are compressed and occupy an interstitial space between the floor 5 and the sealing layer January 1.

 During the water filling of the lifting pillars 40, the lifting pillars 40 move from the retracted configuration to the deployed configuration, and thus these lifting pillars 40 raise the floor 5 to the raised top position illustrated in FIG.

 During this rise of the floor 5, guiding devices 6 fixed on the floor 5 guide the rise of the floor 5. As shown in Figure 9, the floor 5 supports a plurality of guiding devices 6 provided with rolling members 60 shaped for rolling along some of the vertical posts 34 during the vertical displacements of the floor 5. Each guiding device 6 also comprises an elastic member 61, in particular of the helical spring type, capable of pushing the rolling member 60 against the side panel 35 concerned . The rolling members 60 may be in the form of rollers or balls.

 These guiding devices 6 are fixed on the support structure 50, below the blades 53.

Once the floor 5 in the raised up position, the lifting pillars 40 support the floor 5 in the raised up position, thanks to the incompressible character of the water, being noted that the water present in the pillars 40 remains in the lifting pillars 40 by means of either an independent valve placed upstream of the pump, or a valve present directly in the pump.

 As shown in Figure 9, the lip 33 forms a stop for the floor 5 in its raised upper position. Thus, the lip 33 stops the floor 5 and ensures a horizontal level of the floor with this peripheral support of the floor 5 on the lip 33. It should be noted that the lip 33 will be placed on the upper frame 32 after laying the floor 5 on the bottom structure 2.

 In an advantageous embodiment, the pool 1 incorporates floor lifting legs 5 which can be placed when the floor 5 is in the upper position and thus secure the floor 5 in this high position once the pool emptied of water. Such crutches will also purge the up / down system 4 of its water, for technical intervention, while keeping the floor 5 in the up position

 It is also conceivable, alternatively or in addition to these lifting crutches, to keep the lifting pillars 40 filled with water, which keeps the floor 5 in the high position despite emptying the pool.

 In the example illustrated in the figures, it is expected that the up / down system 4 comprises a single series of lifting pillars 40 each having the same height Hmax in deployed configuration, so that the up / down system 4 is designed to vertically move the floor 5 between the low immersed position and the raised upper position, and to maintain the floor 5 in its high position.

 During this rise from the low immersed position to the raised upper position, the balancing of the lifting pillars 40 is naturally done by the phenomenon of communicating vessels.

 The lifting pillars 40 (their numbers, their dimensions and configurations) and the floor 5 are configured so that the permissible load on the floor 5, once in the high position, is at least 150 kilograms per square meter.

By ensuring that each lifting pillar 40 receives a flow and a quantity of equivalent water, in an equivalent time, it is conceivable not to completely fill the lifting pillars 40 (for example a half-filling), so that these pillars 40 can move vertically the floor 5 between the immersed low position and an intermediate position between the immersed low position and the raised upper position, and so that these lifting pillars 40 will support the floor 5 in this intermediate position. Such an intermediate position can be envisaged so that the pool 10 offers a reduced depth, for example that the pool is accessible for children not knowing how to swim.

 In a particular embodiment and not illustrated, it can be provided that the up / down system comprises:

 a first series of lifting pillars each having the same first height H max in deployed configuration, so that these lifting pillars of the first series can support the floor in the raised up position; and

 a second series of lifting pillars each having the same second height Hint in deployed configuration, this second height Hint being less than the first height Hmax, so that these lifting pillars of the second series can support the floor 5 in an intermediate position between the low position submerged and the upper position emerged.

 Thus, this up / down system is shaped to position the floor 5:

- in the low submerged position, so that the pool offers maximum depth;

 - In the intermediate position under the action of only the lifting pillars of the second series, so that the basin has a reduced depth, for example that the pool is accessible for children not able to swim (in the manner of paddling pool);

 - either in the high position emerged under the action of only the lifting pillars of the first series, so that the basin is covered.

Claims

1. Raising / lowering system (4) of a submersible structure (5) within a volume of water, said up / down system (4) being provided for vertically displacing said submersible structure (5) between a low position and at least one high position, said up / down system (4) being characterized in that it comprises at least one lifting pillar (40) comprising a sealed and inelastic envelope, and a hydraulic system (7) comprising a pump (70) connected to said casing for filling said casing with water from said volume of water, said lift pillar (40) being configurable between:  a retracted configuration in which the envelope is empty of water in order to allow the submersible structure (5) to be in a low position; and  an expanded configuration in which the envelope is filled with water in order to support the submersible structure (5) in the high position. 2. Climbing / lowering system (4) according to claim 1, wherein the at least one lifting pillar (40) is provided with at least one upper fastening member (42) provided for attachment under the submersible structure (5). ). 3. Raising / lowering system (4) according to any one of claims 1 and 2, wherein the casing is inelastic by having a stretch rate before rupture or tear less than 0.5%, and in particular less than 0.1%. 4. Raising / lowering system (4) according to any one of claims 1 to 3, wherein the casing comprises at least one layer of woven and sealed material and / or a layer of tight polymeric material, such as polychloride vinyl (PVC), ethylene-propylene-diene monomer rubber (EPDM), ethylene-vinyl acetate (EVA). An ascent / descent system (4) according to any one of the preceding claims, comprising a plurality of lifting pillars (40) connected to the pump (70) and arranged to be arranged at different points under the submersible structure (5). The raising / lowering system (4) according to claim 5, wherein the hydraulic system (7) comprises a common water collector (73) having an inlet connected to the pump (70) via a first pipe (71). and a plurality of outlets connected to the lifting posts (40) by distribution lines (75). A raising / lowering system (4) according to claim 6, wherein the distribution lines (75) are provided with calibrated valves and / or the distribution lines (75) are of equivalent lengths and diameters and predefined so as to to balance the water filling rates between the various lifting pillars (40). An ascent / descent system (4) according to any one of claims 5 to 7, comprising a first series of lifting pillars (40) each having the same first height in deployed configuration, and a second series of lifting pillars (40). ) each having the same second height in deployed configuration, said second height being distinct from said first height, so that said up / down system (4) is shaped to position the submersible structure (5) at a first up position under action of the only lifting pillars (40) of the first series, and a second high position under the action of only the lifting pillars (40) of the second series. 9. Raising / lowering system (4) according to any one of the preceding claims, wherein the submersible structure (5) is non-floating, in particular after attachment of at least one ballast element on the submersible structure (5). . 10. Climbing / lowering system (4) according to any one of the preceding claims, wherein the hydraulic system (7) is configured to circulate the water in two directions: - A filling direction in which the water flows from the volume of water to the at least one lifting pillar (40) for a filling of its water envelope to ensure a rise of the submersible structure (5); and  - A emptying direction in which the water flows from the at least one lifting pillar (40) to the volume of water for emptying its envelope in water to ensure a descent of the submersible structure (5). 1 1. Raising / lowering system (4) according to claim 10, comprising a control system (8) which comprises a control module (80) which controls the hydraulic system (7) to control the circulation of the water according to one either of the two directions of circulation and thus to control the rise / fall of the submersible structure (5). 12. Raising / lowering system (4) according to claim 1 1, wherein the control system (8) comprises, connected to the control module. (80), at least one high detection system (81, 82) configured to detect the submersible structure (5) in its up position and / or at least one low detection system (83) configured to detect the submersible structure (5). ) in its low position, so that the control module (80) controls the hydraulic system (7) according to the detection performed by the at least one detection system (81, 82, 83). Swimming pool (1) comprising a swimming pool (10) having a movable submersible floor (5), and an ascent / descent system (4) adapted to vertically move said floor (5) between a low immersed position and a position high emergence, said swimming pool (1) being characterized in that said up / down system (4) is in accordance with any one of the preceding claims, wherein the pump is connected to both (x) pillar (s) elevator (s) and the basin (10) for filling the at least one lifting pillar (40) with water from the basin (10). The swimming pool (1) according to claim 13, wherein the pool (10) comprises: - a bottom structure (2) comprising at least a plurality of transverse joists (21) arranged side by side; and - a peripheral structure (3) supported by the bottom structure (2) and comprising at least vertical posts (34) on which are fixed side panels (35); where the swimming pool (1) further comprises at least one sealing layer (1 1) disposed below the bottom structure (2) and around the peripheral structure (3) for sealing the basin (10). ); and wherein the movable floor (5) rests freely on the bottom structure (2) in its low immersed position and the at least one lifting pillar (40) is disposed between transverse bars (21) of the bottom structure (2) . 15. Swimming pool (1) according to claim 14, wherein the bottom structure (2) further comprises at least one longitudinal tongue (22) intersecting the transverse joists (21) and fixed on said transverse bars (21). 16. Swimming pool (1) according to any one of claims 14 and 15, wherein the floor (5) comprises a support structure (50) consisting of transverse beams (51) and longitudinal beams (52) crossing and fixed between them, and a platform (53) fixed to said support structure (50), wherein the support structure (50) rests freely on the bottom structure (2) in the low submerged position. 17. The swimming pool (1) according to claim 16, wherein the platform is composed of a blade assembly (53) and / or slabs fixed on the support structure (50). 18. Pool (1) according to any one of claims 13 to 17, wherein the floor (5) further comprises at least one ballast element for said floor (5) is non-floating. 19. Swimming pool (1) according to any one of claims 14 to 18, wherein the floor (5) supports guiding devices (6) provided with rolling members (60) shaped to roll along the peripheral structure (3), and in particular along some of the vertical posts (34), during the vertical displacements of said floor (5). 20. Swimming pool (1) according to any one of claims 14 to 19, wherein the at least one lifting pillar (40) is fixed on the bottom structure (2). 21. Pool (1) according to any one of claims 13 to 20, wherein the basin (10) comprises a peripheral upper lip (33) forming a stop for the floor (5) in its raised upper position. 22. Swimming pool (1) according to any one of claims 13 to 21, wherein the pump (70) of the hydraulic system (7) is a countercurrent swimming pump which is connected, via a distribution valve, to both at the lift pillar (s) and at a swimming mouth opening into the basin (10) to provide a counter-current swim function, said dispensing valve being operable to distribute the water either in the direction of the lifting pillar (40) towards said swimming mouth.