Protective system for a terrain or a construction
The protection system addresses synchronization issues in existing systems by using articulated mechanical connections for rotational and translational movements, ensuring smooth tarpaulin deployment and folding, and enhancing structural integrity and functionality.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HANSEZ GONNE BERNARD
- Filing Date
- 2025-12-02
- Publication Date
- 2026-06-11
Smart Images
Figure EP2025085049_11062026_PF_FP_ABST
Abstract
Description
PROTECTION SYSTEM FOR LAND OR BUILDINGS Object of the invention
[0001] The present invention relates to a multifunctional system for protecting land or a building, to protect it against climatic hazards. Technological background and state of the art
[0002] The protection of land, particularly sports fields, or buildings is a constant concern and various systems are known from prior art.
[0003] Document EP1894608A2 discloses a protective system for a sports field comprising a box-shaped frame containing a protective cover. The box-shaped frame moves along the entire length of the field while simultaneously unfolding or folding the protective cover using a folding mechanism. The box-shaped frame is connected to a network of cables previously deployed across the sports field. The cables are driven by motorized pulleys to move the box-shaped frame across the field. The box-shaped frame is designed to be divided into several modular elements that are joined together and ideally move synchronously across the sports field thanks to the network of cables driven by the motorized pulleys when the cover is unfolded or folded. However, synchronizing the motorized pulleys proves complex due to the large number of pulleys that need to be motorized.Any desynchronization of these pulleys can put the frame-casing under stress, which can not only weaken the structure but also hinder the unfolding or folding of the tarpaulin. This is because the frame-casing, formed by assembling the modules, can become misaligned, and torsional forces along its length will destroy it, preventing the canvas from being pinched and laminating properly. In this state of the art, the rollers under the frame-... The trunk and its even distribution along its length can damage the surface of the lawn or crops. BE1019762A4 and EP1003 596 B1 also disclose protection systems. Purpose of the invention
[0004] The present invention aims to provide a protection system for a (sports) field or structure which does not have the disadvantages of the prior art and which allows not only the simplest and fastest deployment of a protective tarpaulin on a (sports) field but also the unobstructed folding of this tarpaulin. Main characteristic elements of the invention
[0005] The present invention discloses: - a protection system for land or a building, said system comprising: - a suitable protective tarpaulin to cover a surface of the ground to be protected or an area of the construction to be protected; - a movable bridge comprising: - a supporting chassis of elongated shape along a first reference direction, the supporting chassis comprising two end regions, between which the supporting chassis extends along the first reference direction; - two mobile bases positioned respectively at the two end regions of the supporting chassis and on which the supporting chassis rests; - two articulated mechanical connections ensuring a link between the mobile bases and the two end regions of said carrier frame, the two mobile bases being arranged respectively under the two end regions preferably in vertical alignment with the two end regions; said system being such that the carrier frame is adapted to receive the protective tarpaulin, the mobile bridge spanning said surface of the ground to be protected or said area of the construction to be protected in use and the mobile bridge being able to move, along a second reference direction, called longitudinal, over the entire length or width of said surface to be protected or said area of the construction to be protected while unfolding or folding said protective tarpaulin using an unfolding and folding mechanism, the first reference direction being transverse to the second reference direction, called longitudinal; characterized in that each articulated mechanical connection provides a rotational movement and at least one, in particular each, of said connections provides a translational movement so that the mobile bridge is capable of tolerating a misalignment between said bases during a movement in the second reference direction, called longitudinal, of the mobile bridge without said supporting frame becoming crab-like; or -a protection system for a piece of land or a building, said system comprising: - a suitable protective tarpaulin to cover a surface of the ground to be protected or an area of the construction to be protected; - a movable bridge comprising: - a supporting chassis of elongated shape along a first reference direction, the supporting chassis comprising two end regions, between which the supporting chassis extends along the first reference direction; - two mobile bases arranged respectively at the two end regions of the carrier frame; wherein the two ends of the carrier frame rest on the mobile bases by means of two articulated mechanical connections ensuring a link between the mobile bases and the two end regions of said carrier frame; wherein the carrier frame is adapted to receive the protective tarpaulin, the mobile bridge spanning said surface of the ground to be protected or said area of the construction to be protected in use and the mobile bridge being able to move, along a second reference direction, called longitudinal, over the entire length or width of said surface to be protected or said area of the construction to be protected while unfolding or folding said protective tarpaulin by means of an unfolding and folding mechanism, the first reference direction being transverse to the second reference direction, called longitudinal;characterized in that each articulated mechanical connection ensures a rotational movement and at least one, in particular each, of said connections ensures a translational movement so that the mobile bridge is able to tolerate a step offset between said bases during a movement in the second reference direction, called longitudinal, of the mobile bridge without said supporting chassis becoming crab-like.
[0006] According to advantageous embodiments of the invention, the protection system comprises one or more of the following technical features, in any possible combination: • the supporting chassis includes or consists of a rigid frame defining a box to receive the protective tarpaulin at least partially folded, said frame extending between the two end regions; • Each articulated mechanical connection includes a rotating plate. • at least one articulated connection, in particular each articulated mechanical connection further includes a slide; • at least one articulated mechanical connection, in particular each articulated connection includes a pivot and a saddle; • at least one articulated mechanical connection, in particular each articulated connection has an axis of rotation, preferably extending vertically in use, associated with the rotational movement and an axis of translation, preferably extending horizontally, in particular along the first reference direction, associated with the translational movement, preferably said axis of rotation being substantially perpendicular or substantially orthogonal to the axis of translation, in particular said axis of rotation forming an angle between 85 and 95 degrees with respect to the axis of translation, in particular said axis of rotation being perpendicular or orthogonal to the axis of translation; • each mobile base is driven by a motor mounted on or in said base; • the system includes a control unit and at least one sensor enabling the detection of a shift along the second reference direction, known as longitudinal, between the two mobile bases, said control unit being configured to modify the speed of at least one of the motors of said bases to minimize this shift during a movement of the mobile bases; • the system further comprises rails, and in that the mobile bases rest on the rails arranged on longitudinal edges or walls of the ground which extend in the second direction or on longitudinal load-bearing or ancillary elements of the construction, in particular walls or beams of the construction, extending in the second reference direction; • the supporting chassis comprises removable modules rigidly assembled from one another; • the land is selected from agricultural land or sports land, in particular a football pitch, a tennis court, a hockey pitch or a volleyball court; • the construction is selected from an industrial hall, a sports infrastructure, a swimming pool, an agricultural building, in particular an agricultural greenhouse, or a garden structure, in particular a garden shed, a gazebo, a garden greenhouse, a veranda or a pergola; • The protective tarpaulin rests on a net or a network of taut cables: - between transverse boundaries or walls of the land, extending along the first reference direction and arranged on either side of the surface of the land to be protected, and / or longitudinal boundaries or walls of the land, extending along the second reference direction and arranged on either side of the surface of the land to be protected, or - between transverse load-bearing or ancillary elements extending along the first reference direction and arranged on either side of the area of the construction to be protected and / or between longitudinal load-bearing or ancillary elements of the construction, extending along the second reference direction and arranged on either side of the area of the construction to be protected; • the supporting chassis includes a mechanism for unfolding or folding the protective cover, said mechanism comprising motorized rollers and equipped with a support force adjustment by means of arms equipped with a spring exerting a support force on counter-support rollers pressing these on said cover, the protective cover being pinched between said motorized rollers and the counter-support rollers; • The said mechanism for unfolding and folding the tarpaulin includes fixed guide ropes: - to transverse boundaries or walls of the land, extending in the first direction and arranged on either side of the surface of the land to be protected, or - to the load-bearing or ancillary transverse elements of the construction, extending in the first direction and arranged on either side of the area of the construction to be protected, the guide ropes being threaded through threading loops located under said tarpaulin and guiding said tarpaulin when it is folded or unfolded, preferably when folding said tarpaulin, said ropes guides and said threading loops being threaded respectively through and around a threading tube; • said tarpaulin unfolding or folding mechanism includes a synchronization system, synchronizing the speed of movement of said support frame via the motors of the mobile bases with the speed of folding or unfolding of the tarpaulin via the motorized rollers; • said supporting chassis includes at least one of the elements of the group comprising a heating system for said tarpaulin, a watering system, a seeder for sowing grasses, and supports for advertising signs; • said tarpaulin can be used as an advertising medium and / or the tarpaulin is translucent; • the construction is in the open air and the area to be protected from the construction is an open space; • at least one particular load-bearing or ancillary element is a wall or a beam; • the protective cover has openings for water drainage; • the two mobile bases being arranged respectively under the two end regions preferably in vertical alignment with the two end regions.
[0007] Other features and advantages of the present invention will be better understood with the aid of the drawings and description below.
[0008] Figure 1 represents a front view (in a longitudinal direction) of the protection system according to the invention.
[0009] Figure 2 is a perspective view of a portion of the supporting frame according to the invention.
[0010] Figure 3a is a profile view (sagittal section perpendicular to the length of the chassis) of the system according to the invention.
[0011] Figure 3b is a top view of an articulated mechanical connection providing both translational and rotational movements at at least one end of the supporting chassis according to the invention.
[0012] Figure 4 is a perspective view of a protection system according to the invention on a football field.
[0013] Figure 5 is a front view of a protection system according to the invention equipped with a net on an open-air structure.
[0014] Figure 6 is a front view of a protection system according to the invention with a network of cables on an open-air construction.
[0015] Figure 7 is a top view of a system according to the invention.
[0016] Figure 8 is a perspective view of another articulated mechanical connection according to the invention. Definitions
[0017] The term "cable" in "cable network" should be interpreted broadly and can of course mean "wire" or even "rope." The nature of the material used is irrelevant as long as sufficient mechanical strength and the desired result are achieved.
[0018] The term "tarpaulin" is also to be understood in a broad sense and as a covering in general and can, for example, mean "canvas".
[0019] The expression "rope" or "guide rope" is also to be understood in a broad sense and in the system of threading the tarpaulin using loops fixed under the tarpaulin, "rope" can mean "rope" or "thread". Description of preferred embodiments of the invention
[0020] The present invention discloses a multifunctional system for protecting a sports field, in particular football, rugby, hockey, tennis and other fields, or a structure against climatic hazards such as hail, heavy rain, permanent frost or snow, ...
[0021] The multifunctional protection system according to the invention is not limited to sports applications but can also be deployed not only on agricultural surfaces but also on a building with an open space (or a glazed greenhouse).
[0022] The system according to the invention offers numerous advantages that are not limited to simple protection. Without being exhaustive, the following may be mentioned: - the tarpaulin protection system can serve as protection against hail; - the protection system is robust because it can tolerate the fact that the supporting chassis does not have a perfect parallel movement and because there are fewer driving elements to control; -the tarpaulin or protective canvas can serve as a large-scale advertising medium, and can therefore be financed by a sponsor; - the resistance of a protected pitch, rarely frozen or waterlogged, is much greater than that of an unprotected pitch and therefore allows the organization of many matches even in the off-season or when other pitches are not available; - the number of training grounds for the same club can be reduced, which generates significant land advantages; - the improvement of playing conditions allowing at each time of the year a general reduction in injuries and a more technical game; - the tarpaulin may not rest directly on the ground but on a net or a network of stretched cables, or even on a light and slightly arched frame.
[0023] The protection system of the present invention, as illustrated in Figure 1, comprises a supporting frame 2 resting at its ends on two mobile bases 3a, 3b. This design overcomes the synchronization problem by reducing the number of elements required for movement. Furthermore, the two mobile bases 3a, 3b, being positioned at the ends, leave the central part of the field free of any load (except for tarpaulins). The supporting frame 2 is generally made up of several modular elements 4 (see Figure 2) to cover the entire width of the field. Each modular element 4 of the supporting frame 2 preferably has a length of 4 to 20 meters, particularly 5 to 8 meters, and especially preferably 6 meters. For a football field, twelve 6-meter elements will therefore be required to achieve a total width of 72 meters.The modular elements 4 can be advantageously fitted together as illustrated in Figure 2, which shows a perspective view of a portion of the carrier chassis 2. The mobile bases can include pneumatic wheels, solid wheels, rolling wheels, tracks or rack gears.
[0024] The two ends of the supporting frame rest on the movable bases 3a, 3b by means of joints (i.e., articulated mechanical connections) 31, 32, 33, 34 as illustrated in Figure 3b or 8, ensuring at least the possibility of very slight movements, both rotational and translational. These measures reduce the structure's static indeterminacy, resulting in better controllability of its movement and, for example, preventing crabbing or twisting. Thanks to this device, the support chassis 2 can move while remaining substantially perpendicular to the direction of its travel to ensure correct deployment of the protective tarpaulin 10 without support on the ground.
[0025] The tarpaulin 10 can be made of a single piece or constructed as a patchwork of rectangular or square pieces (strips of technical fabrics or canvases of a certain width and infinite length). It is generally translucent and laid directly on the ground, but it can also be raised if it is planned to blow air under the tarpaulin 10. The tarpaulin 10 has threading loops on its underside for the guide ropes 22 as described in patent document EP2894608A2. These loops 21 allow the creation of folds in the fabric / tarpaulin 10 when it is folded into the supporting frame 2. For a football pitch, there will be, for example, "x" times 73 loops under the fabric / tarpaulin, (= 73 loops times "x" strips of fabric needed to make up the more than 7000 m²). 2 of a tarpaulin 10 covering a football pitch).
[0026] The guide ropes 22 have an important function as they allow for the even deployment of the tarpaulin 10 across the entire width of the field 50. The guide ropes 22 are preferably fixed to the transverse edges of the field 50 and cross the support frame 2 so that the loops thread through the ropes. When the tarpaulin 10 is deployed by the backward movement of the support frame 2 across the field 50, the loops 31 emerge progressively from the support frame 2 as the tarpaulin unfolds over the area to be protected. When folding the tarpaulin, with the support frame moving forward, the guide ropes 22 retract progressively into the threading tubes, and simultaneously the loops of the tarpaulin thread themselves into the tubes 25.
[0027] For folding the tarpaulin 10 during the movement of the support frame 2, motorized rollers 8 are activated. The clamping force is adjusted by a tension spring 24 exerting a force on an arm on which a counter-support roller 23 is located. The rollers 8 and 23 are generally equipped with a gripping surface to facilitate clamping the tarpaulin 10. There is usually a drive source (manual or electric) that synchronously actuates the motorized rollers 8. Adjusting the clamping force using the spring 24 is necessary to potentially lift a pocket of water on the tarpaulin 10.
[0028] When the tarpaulin 10 is folded, the guide rope 22 can be threaded through a threading tube 25 and the loops 21 can be threaded onto or around the tube 25. This operation is also described in EP2894608A2. The ropes passing inside the tube and the loops 21 being placed outside around the tube allowing the tarpaulin 10 to be perfectly folded accordion-style in the frame-box 2. It will therefore require as many threading tubes per meter of tarpaulin width as there are loops 21 and guide ropes 22.
[0029] The system of the present invention can be equipped with a wide range of options. Apart from the advertising function mentioned above, the most common options, as described in patent document EP2894608A2, include a heating system for the tarpaulin 10 and a watering system. The heating system can consist of several radiant and / or fan heaters. Furthermore, the tarpaulin 10 can incorporate photovoltaic cells as a source of electrical energy. These cells help to limit heat loss and warm the tarpaulin 10 to dry it and make it less rigid in case of frost before it is folded into the frame-box 2.
[0030] Other options are, of course, possible, such as a mechanism allowing grass seeds to be sown on the ground (not shown).
[0031] The load-bearing frame 2 according to the invention is constructed like a construction set, by assembling parts that can be easily replaced if worn. All elements can be easily disassembled and reassembled. Alternatively, for certain long-span applications, a truss structure may be preferred. Similarly, beams extending on either side of the ground, with variable cross-sections and / or a curved (banana) shape, can be considered to ensure the necessary rigidity over a long span.
[0032] The protective system according to the invention can also be used to cover an open space in a building, such as a factory hall, for example. Two scenarios are possible: the tarpaulin is held in place when deployed, or it is partially held in place.
[0033] Figure 5 describes a protection system corresponding to the first scenario. The tarpaulin 10 can be placed on a net 61 stretched between the walls 62 of the structure 60. Ideally, the tarpaulin 10 has openings for water drainage. The mobile bases 3a and 3b of the protection system rest on the walls 6, preferably on rails which are not shown. Alternatively, the structure 60 can include columns on which beams rest, used both to tension the net and to serve as a guide and support surface for the Mobile bases. Instead of using a net to support the deployed tarpaulin, crossbeams can be used. These beams can be horizontal or curved upwards or downwards, as required.
[0034] Figure 6 describes a protection system corresponding to the second scenario. The tarpaulin 10 is held at its central point by a network of tensioned cables 63. Alternatively, the guide ropes 22, thanks to a pre-tensioning device located in the support frame 2, can serve as support means for the tarpaulin 10.
[0035] Figure 7 shows a top view of the protection system according to the invention. It illustrates the kinematics of the articulated structure, which prevents misalignment of the structure in the event of desynchronization between the two mobile bases 3a and 3b. Preferably, the system includes a control unit and at least one sensor for detecting a longitudinal misalignment between the two mobile bases. This control unit is configured to modify the speed of the motors to minimize this misalignment during the movement of the mobile bases. For example, an inertial sensor can be placed on each mobile base. Integrating the accelerations allows the position of the mobile bases to be determined, and the presence of excessive misalignment to be deduced. This misalignment can then be compensated for by adjusting the control of the drive motors for the mobile bases 3a and 3b.Alternatively, or in addition, each base includes a displacement sensor (optical or based on the motor's RPM) to determine its position. The structure of the invention prevents blockage or derailment of the structure with a relatively simple control method, as a small offset can be absorbed by the structure's joints.
[0036] The protection system according to the invention comprises two articulated mechanical joints, each including one degree of rotational freedom. In a first configuration, only one of the two articulated joints includes one degree of translational freedom, in addition to the rotational freedom. Thus, the supporting frame is held in translation by the other joint. Furthermore, the translation is preferably oriented in the transverse direction, but other directions are also possible. In a second configuration, both articulated joints each include one degree of translational freedom, in addition to the rotational freedom. In this configuration, a stop can be provided to limit movement, or an active restraint means (for example, a jack) can be used to enable movement. the pivot and thus recenter the structure. Alternatively, the structure can be recentered by manual intervention.
[0037] Furthermore, the description includes embodiments of the invention according to the following clauses: 1. A protection system for land (50) or a building (60), said system comprising: - a protective tarpaulin (10) suitable for covering an area of the ground (50) to be protected or an area of the construction (60) to be protected; - a movable bridge (1) comprising: - a supporting chassis (2) of elongated shape along a first reference direction, the supporting chassis (2) comprising two end regions, between which the supporting chassis (2) extends along the first reference direction; - two mobile bases (3a, 3b) arranged respectively at the two end regions of the supporting chassis (2) and on which the supporting chassis (2) rests; - two articulated mechanical connections (31, 32, 33, 34) ensuring a link between the mobile bases (3a, 3b) and the two end regions of said carrier chassis (2), the two mobile bases (3a, 3b) being arranged respectively under the two end regions preferably in vertical alignment with the two end regions;said system being such that the supporting frame (2) is adapted to receive the protective tarpaulin (10), the mobile bridge (1) spanning said surface of the ground (50) to be protected or said area of the construction (60) to be protected in use and the mobile bridge (1) being able to move, along a second reference direction, called longitudinal, over the entire length or width of said surface to be protected or of said area of the construction (60) to be protected while unfolding or folding said protective tarpaulin (10) using an unfolding and folding mechanism, the first reference direction being transverse to the second reference direction, called longitudinal;characterized in that each articulated mechanical connection (31, 32, 33, 34) ensures a rotational movement (31, 33) and at least one, in particular each, of said connections (31, 32, 33, 34) ensures a translational movement (32, 33) so that the mobile bridge (1) is able to tolerate a step offset between said bases (3a, 3b) during a movement in the second reference direction, called longitudinal, of the mobile bridge (1) without said supporting frame (2) becoming crab-like.; 2. A protection system for land (50) or a building (60), said system comprising: - a protective tarpaulin (10) suitable for covering an area of the ground (50) to be protected or an area of the construction (60) to be protected; - a movable bridge (1) comprising: - a supporting chassis (2) of elongated shape along a first reference direction, the supporting chassis (2) comprising two end regions, between which the supporting chassis (2) extends along the first reference direction; - two mobile bases (3a, 3b) disposed respectively at the two end regions of the carrier chassis (2); in which the two ends of the carrier chassis (2) rest on the mobile bases (3a, 3b) by means of two articulated mechanical connections (31, 32, 33, 34) ensuring a link between the mobile bases (3a, 3b) and the two end regions of said carrier chassis (2);in which the supporting frame (2) is adapted to receive the protective tarpaulin (10), the movable bridge (1) spanning said ground surface (50) to be protected or said construction area (60) to be protected in use and the movable bridge (1) being able to move, along a second reference direction, called longitudinal, over the entire length or width of said surface to be protected or said construction area (60) to be protected while unfolding or folding said protective tarpaulin (10) using an unfolding and folding mechanism, the first reference direction being transverse to the second reference direction, called longitudinal;characterized in that each articulated mechanical connection (31, 32, 33, 34) ensures a rotational movement (31, 33) and at least one, in particular each, of said connections (31, 32, 33, 34) ensures a translational movement (32, 33) so that the mobile bridge (1) is able to tolerate a step offset between said bases (3a, 3b) during a movement in the second reference direction, called longitudinal, of the mobile bridge (1) without said supporting frame (2) becoming crab-like.; 3. Protection system according to clause 1 or 2, characterized in that the supporting frame (2) comprises or consists of a rigid structure defining a box for receiving the protective cover (10) at least partially folded, said structure extending between the two end regions. 4. Protection system according to clause 1, 2 or 3, characterized in that each articulated mechanical connection (33, 34) comprises a rotating plate (33). 5. Protection system according to the preceding clause, characterized in that at least one articulated connection (33, 34), in particular each articulated mechanical connection (33, 34) further comprises a slide (34). 6. Protection system according to clause 1, 2 or 3, characterized in that at least one articulated mechanical connection (31, 32), in particular each articulated connection (31, 32) comprises a pivot (31) and a saddle (32). 7. Protection system according to one of the preceding clauses characterized in that at least one articulated mechanical connection (31, 32), in particular each articulated connection (31, 32) has an axis of rotation, preferably extending vertically in use, associated with the rotational movement and an axis of translation, preferably extending horizontally, in particular along the first reference direction, associated with the translational movement, preferably said axis of rotation being substantially perpendicular or substantially orthogonal to the axis of translation, in particular said axis of rotation forming an angle between 85 and 95 degrees with respect to the axis of translation, in particular said axis of rotation being perpendicular or orthogonal to the axis of translation. 8. Protection system according to one of the preceding clauses characterized in that each movable base (3a, 3b) is driven by a motor mounted on or in said base (3a, 3b). 9. Protection system according to the preceding clause characterized in that the system includes a control unit and at least one sensor enabling the detection of a shift along the second reference direction, called longitudinal, between the two mobile bases (3a, 3b), said control unit being configured to modify the speed of at least one of the motors of said bases (3a, 3b) to minimize this shift during a movement of the mobile bases (3a, 3b). 10. Protection system according to one of the preceding clauses, characterized in that the system further comprises rails, and in that the mobile bases (3a, 3b) rest on the rails arranged on longitudinal edges or walls of the ground (50) extending along the second direction or on longitudinal load-bearing or ancillary elements of the construction (60), in particular walls (62) or beams of the construction (60), extending along the second reference direction. 11. Protection system according to one of the preceding clauses, characterized in that the supporting frame (2) comprises removable modules (4) rigidly assembled from one another. 12. Protection system according to one of the preceding clauses, characterized in that the ground (50) is selected from agricultural land or sports ground, in particular a football pitch, a tennis court, a hockey pitch or a volleyball court. 13. Protection system according to one of the preceding clauses, characterized in that the construction (60) is selected from an industrial hall, a sports infrastructure, a swimming pool, an agricultural building, in particular an agricultural greenhouse, or a garden structure, in particular a garden shed, a gazebo, a garden greenhouse, a veranda or a pergola. 14. Protection system according to one of the preceding clauses, characterized in that the protective tarpaulin (10) rests on a net or a network of tensioned cables (63): - between transverse boundaries or walls of the land (50), extending along the first reference direction and arranged on either side of the surface of the land to be protected and / or longitudinal boundaries or walls of the land (50), extending along the second reference direction and arranged on either side of the surface of the land to be protected, or - between load-bearing elements (62) or transverse annexes extending along the first reference direction and arranged on either side of the area of the construction to be protected and / or between the load-bearing elements (62) or annexes of the construction (60) longitudinal, extending along the second reference direction and arranged on either side of the area of the construction to be protected. 15. Protection system according to one of the preceding clauses, characterized in that the supporting frame (2) includes a mechanism for unfolding or folding the protective cover (10), said mechanism comprising motorized rollers (8) and equipped with a support force adjustment by means of arms equipped with a spring (24) exerting a support force on counter-support rollers (23) pressing the latter on said cover (10), the protective cover (10) being pinched between said motorized rollers (8) and the counter-support rollers (23). 16. Protection system according to the preceding clause, characterized in that said mechanism for unfolding and folding the tarpaulin (10) comprises guide ropes (22) fixed: - to transverse boundaries or walls of the land (50), extending along the first direction and arranged on either side of the surface of the land to be protected, or - to the load-bearing elements (62) or transverse annexes of the construction, extending along the first direction and arranged on either side of the area of the construction (60) to be protected, the guide ropes being threaded through threading loops (21) located under said tarpaulin (10) and guiding said tarpaulin (10) when it is folded or unfolded, of preference when folding said tarpaulin (10), said guide ropes (22) and said threading loops (21) being threaded respectively through and around a threading tube (25). 17. Protection system according to one of clauses 15 to 16 in combination with clause 8 or 9, characterized in that said unfolding or folding mechanism of the tarpaulin includes a synchronization system, synchronizing the speed of movement of said carrier frame (2) via the motors of the mobile bases (3a, 3b) with the speed of folding or unfolding of the tarpaulin (10) via the motorized rollers (8). 18. Protection system according to one of the preceding clauses, characterized in that said carrier frame (2) includes at least one of the elements of the group comprising a heating system (10) of said tarpaulin (10), a watering system, a seeder for sowing grasses, and advertising sign supports. 19. Protection system according to one of the preceding clauses, characterized in said tarpaulin (10) can serve as an advertising medium and / or the tarpaulin (10) is translucent. 20. Protection system according to one of the preceding clauses, characterized in that the construction (60) is open to the sky and the area to be protected from the construction is an open space. 21. Protection system according to one of the preceding clauses, characterized in that at least one particular load-bearing element (62) or annex is a wall or a beam. 22. Protection system according to one of the preceding clauses, characterized in that the protective cover (10) has openings for the evacuation of water. 23. Protection system according to one of the preceding clauses, characterized by the two mobile bases (3a, 3b) being arranged respectively under the two end regions preferably in vertical alignment with the two end regions.
[0038] List of reference symbols 1. Movable bridge 2. Load-bearing chassis 3a, 3b. Mobile bases 4. Modular elements 8. Motorized roller 10. Tarpaulin 21. Threading loop 22. Guide rope 23. Roller against support 24. Tension spring 25. Threading tube 31. Pivot 32. Saddle 50. Terrain 60. Building (open-air) 61. Net 62. Load-bearing or ancillary elements (e.g., walls, beams) 63. Reinforcing cables.
[0039] By the expression "the first reference direction being transverse to the second reference direction, called longitudinal" is meant that the first reference direction is substantially perpendicular or substantially orthogonal to the second reference direction, in particular the first reference direction forming an angle between 70 and 110 degrees, preferably between 80 and 100 degrees, in particular between 85 and 95 with respect to the second reference direction, in particular the first reference direction being perpendicular or orthogonal to the second reference direction.
[0040] Notwithstanding the fact that the present invention has been disclosed by means of a detailed description explaining an alternative embodiment and various aspects of the invention, those skilled in the art will see that the full scope of the invention is by no means limited to the example presented here. The invention has a scope that is proportionate to the terms of this patent, including all elements or aspects that would be considered equivalent to those disclosed in the principal or dependent terms.
Claims
DEMANDS 1. A protection system for land (50) or a building (60), said system comprising: - a protective tarpaulin (10) suitable for covering an area of the ground (50) to be protected or an area of the construction (60) to be protected; - a movable bridge (1) comprising: - a supporting chassis (2) of elongated shape along a first reference direction, the supporting chassis (2) comprising two end regions, between which the supporting chassis (2) extends along the first reference direction; - two mobile bases (3a, 3b) disposed respectively at the two end regions of the carrier chassis (2); in which the two ends of the carrier chassis (2) rest on the mobile bases (3a, 3b) by means of two articulated mechanical connections (31, 32, 33, 34) ensuring a link between the mobile bases (3a, 3b) and the two end regions of said carrier chassis (2);in which the supporting frame (2) is adapted to receive the protective tarpaulin (10), the movable bridge (1) spanning said ground surface (50) to be protected or said construction area (60) to be protected in use and the movable bridge (1) being able to move, along a second reference direction, called longitudinal, over the entire length or width of said surface to be protected or said construction area (60) to be protected while unfolding or folding said protective tarpaulin (10) using an unfolding and folding mechanism, the first reference direction being transverse to the second reference direction, called longitudinal;characterized in that each articulated mechanical connection (31, 32, 33, 34) ensures a rotational movement (31, 33) and at least one, in particular each, of said connections (31, 32, 33, 34) ensures a translational movement (32, 33) so that the mobile bridge (1) is able to tolerate a step offset between said bases (3a, 3b) during a movement in the second reference direction, called longitudinal, of the mobile bridge (1) without said supporting frame (2) becoming crab-like.; 2. Protection system according to claim 1, characterized in that the supporting frame (2) comprises or consists of a rigid frame defining a box for receiving the protective cover (10) at least partially folded, said frame extending between the two end regions.
3. Protection system according to claim 1 or 2, characterized in that each articulated mechanical connection (33, 34) comprises a rotating plate (33).
4. Protection system according to the preceding claim, characterized in that at least one articulated connection (33, 34), in particular each articulated mechanical connection (33, 34) further comprises a slide (34).
5. Protection system according to claim 1 or 2, characterized in that at least one articulated mechanical connection (31, 32), in particular each articulated connection (31, 32) comprises a pivot (31) and a saddle (32).
6. A protection system according to any one of the preceding claims characterized in that at least one articulated mechanical connection (31, 32), in particular each articulated connection (31, 32) has an axis of rotation, preferably extending vertically in use, associated with the rotational movement and an axis of translation, preferably extending horizontally, in particular along the first reference direction, associated with the translational movement, said axis of rotation forming an angle between 85 and 95 degrees with respect to the axis of translation, in particular said axis of rotation being perpendicular or orthogonal to the axis of translation.
7. Protection system according to any one of the preceding claims characterized in that each movable base (3a, 3b) is driven by a motor mounted on or in said base (3a, 3b).
8. Protection system according to the preceding claim characterized in that the system comprises a control unit and at least one sensor enabling the detection of a shift along the second reference direction, referred to as longitudinal, between the two mobile bases (3a, 3b), said control unit being configured to modify the speed of at least one of the motors of said bases (3a, 3b) to minimize this shift during a movement of the mobile bases (3a, 3b).
9. Protection system according to any one of the preceding claims, characterized in that the system further comprises rails, and in that the mobile bases (3a, 3b) rest on the rails arranged on longitudinal edges or walls of the ground (50) extending along the second direction or on longitudinal load-bearing or ancillary elements of the construction (60), in particular walls (62) or beams of the construction (60), extending along the second reference direction.
10. Protection system according to any one of the preceding claims, characterized in that the supporting frame (2) comprises removable modules (4) rigidly assembled from one another.
11. A protection system according to any one of the preceding claims, characterized in that the ground (50) is selected from agricultural land or a sports field, in particular a football field, a tennis court, a hockey field or a volleyball court.
12. Protection system according to any one of the preceding claims, characterized in that the construction (60) is selected from an industrial hall, a sports infrastructure, a swimming pool, an agricultural building, in particular an agricultural greenhouse, or a garden structure, in particular a garden shed, a gazebo, a garden greenhouse, a veranda or a pergola.
13. A protection system according to any one of the preceding claims, characterized in that the protective tarpaulin (10) rests on a net or a network of tensioned cables (63): - between transverse boundaries or walls of the land (50), extending along the first reference direction and arranged on either side of the surface of the land to be protected and / or longitudinal boundaries or walls of the land (50), extending along the second reference direction and arranged on either side of the surface of the land to be protected, or - between load-bearing elements (62) or transverse annexes extending along the first reference direction and arranged on either side of the area of the construction to be protected and / or between the load-bearing elements (62) or annexes of the construction (60) longitudinal, extending along the second reference direction and arranged on either side of the area of the construction to be protected.
14. Protection system according to any one of the preceding claims, characterized in that the carrier frame (2) includes a mechanism for unfolding or folding the protective cover (10), said mechanism comprising motorized rollers (8) and having a support force adjustment by means of arms equipped with a spring (24) exerting a support force on counter-support rollers (23) pressing the latter on said cover (10), the protective cover (10) being pinched between said motorized rollers (8) and the counter-support rollers (23).
15. Protection system according to the preceding claim, characterized in that said unfolding and folding mechanism of the tarpaulin (10) comprises guide ropes (22) fixed: - to transverse boundaries or walls of the land (50), extending along the first direction and arranged on either side of the surface of the land to be protected, or - to load-bearing elements (62) or annexes of the building (60) transverse, extending along the first direction and arranged on either side of the area of the building (60) to be protected, the guide ropes being threaded into threading loops (21) located under said tarpaulin (10) and guiding said tarpaulin (10) when it is folded or unfolded, preferably when folding said tarpaulin (10), said guide ropes (22) and said threading loops (21) being threaded respectively through and around a threading tube (25).