EP2975197A1 - Einrichtung zum zudecken und abdecken einer fläche - Google Patents

Einrichtung zum zudecken und abdecken einer fläche Download PDF

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Publication number
EP2975197A1
EP2975197A1 EP15176928.8A EP15176928A EP2975197A1 EP 2975197 A1 EP2975197 A1 EP 2975197A1 EP 15176928 A EP15176928 A EP 15176928A EP 2975197 A1 EP2975197 A1 EP 2975197A1
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EP
European Patent Office
Prior art keywords
chain
carriage
clamp
cover
installation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15176928.8A
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German (de)
French (fr)
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EP2975197B1 (en
Inventor
Michel Mahaut
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EC2M
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EC2M
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Publication date
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Publication of EP2975197A1 publication Critical patent/EP2975197A1/en
Application granted granted Critical
Publication of EP2975197B1 publication Critical patent/EP2975197B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/06—Safety devices; Coverings for baths
    • E04H4/08—Coverings consisting of rigid elements, e.g. coverings composed of separate or connected elements
    • E04H4/082—Coverings consisting of rigid elements, e.g. coverings composed of separate or connected elements composed of flexibly or hingedly-connected slat-like elements, which may or may not be wound-up on a fixed axis
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/06—Safety devices; Coverings for baths
    • E04H4/10—Coverings of flexible material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
    • E04H5/06—Pits or building structures for inspection or services

Definitions

  • the present invention relates to the field of devices for covering a surface.
  • the object of the invention finds particular application in all areas where a surface, defining a space, must be covered by a protective element such as a tarpaulin, a curtain or a leaf shutter.
  • the invention is adapted to cover the surface of a pool with a tarpaulin.
  • the patent EP 0 634 981 discloses a device for covering and uncovering a surface using a roll-up cover element such as a tarpaulin.
  • This device is made in the form of a gantry provided with means for moving the sheet above the surface such as a rigid chain pushing moving on either side of the surface. These chains are controlled in translation so as to push a head beam on which is mounted the cover.
  • the device is provided with a series of trolleys providing a temporary connection between the cover and the chains. These carts are intended to be distributed along the cover, when the latter covers the surface.
  • the device further comprises a system for separating the sheet from the chain at a store in the unclogging direction, for storage by retraction of the sheet relative to the chain.
  • Such a device offers the particular advantage of ensuring the sheeting and uncovering of the surface and allows to be completely retracted in unclogging position, prohibiting any deterioration in the open position.
  • the chains are completely retracted, which is a particularly advantageous advantage in the field of pools since the device does not require the presence of rails that are particularly unsightly and a source of danger for users.
  • such a device may have certain drawbacks, in the position of covering the surface, when particularly exceptional climatic conditions occur and in particular, strong wind squalls. Under these conditions, it may happen that some carts come off the chains, thus preventing the tarp from fully playing its role of covering. In addition to the fact that the tarpaulin does not cover properly the dedicated space, the replacement of trolleys on the chains is a relatively difficult operation to carry out. Moreover, as the chains do not have rails to guide them, the surfaces receiving them are not perfectly flat, so, it is possible that the covering of the swimming pool is unsatisfactory.
  • the present invention therefore aims to remedy these drawbacks by proposing a device for covering and unclogging a surface retracting in the unclogging position by completely releasing the surface and able to cover the surface by providing improved stability of the tarpaulin compared to the Prior Art.
  • the device according to the invention thus makes it possible to ensure the uncovering of the surface while being completely retracted, and by completely releasing the surface while improving the stability of the tarpaulin by preventing the wagons from being unhooked by the wind when the surface is covered.
  • the present invention proposes a new installation 1 for covering and removing a surface such as the surface of a swimming pool.
  • This new installation offers the aesthetic advantage of loosening the surface by retracting completely so as to disappear from the view of users.
  • Another advantage offered by the invention is to improve the stability, during the sheeting of the surface or when sheeted, compared to the already known installations.
  • the Fig. 1 illustrates in part an installation 1 according to the present invention, in that the installation as a whole is symmetrical to the illustration of the Fig. 1 .
  • the installation 1 comprises a head beam 2 on which is mounted or fixed a tarpaulin 3.
  • tarpaulin means any flexible or rigid means of occultation of the surface.
  • the cover 3 may be a flexible membrane or a juxtaposition of rigid panels, of materials commonly used by those skilled in the art.
  • the installation 1 comprises a chain 4, which is composed of a series of links 5 and which has the characteristic of being rigid in thrust, with one end connected to the beam of head to move the cover 3 between a magazine M receiving the cover 3 in the open position of the surface and a full covering position of the surface.
  • the chain 4 is controlled in displacement by a pinion 6.
  • the links 5 which will be more precisely described in the following description are arranged to firstly allow a relative pivoting between the links 5 in a given direction, for the return chains 4 in the magazine M and, on the other hand, prohibit such relative pivoting in the opposite direction so that the links 5 rest on each other so that the chains 4 become rigid in thrust when the sheeting operation.
  • the installation 1 thus comprises two chains 4, each positioned on either side of the sheet 3 so as to extend on two opposite sides of the surface to be covered. Consequently, the installation also comprises two pinions 6 each adapted to move one of the chains 4. Also, the two pinions 6 are connected in rotation by a connecting shaft (not shown).
  • a rotation of the pinions 6 is controlled by a motor 7 which is activated using an electrical control such as a push button, a remote control or a programmable cell.
  • the rotation of the pinions 6 causes the translation of the chains 4 is in a first direction said sheeting to cover the surface, or in a second direction opposite to the first sense of said débâchage to unclog the surface.
  • the installation 1 comprises, in addition, a series of supports or carriages 8 which provide a link between the cover 3 and the chains 4.
  • the carriages 8 are carried by sleepers 10 and, more precisely, by brackets 11 mounted at each end of the crosspieces 10.
  • the crosspieces 10 advantageously extend parallel to the head beam 2.
  • the crosspieces 10 consist of profiles hollow which will be described in the following description.
  • the brackets 11 are typically threaded into the hollow profiles of the 10.
  • the carriages 8 are carried two by two by a cross member 10 and two brackets 11, thus ensuring, during the translation of the carriages 4, the translation of the crosspieces 10 and 11 of the gallows parallel to the head beam 2.
  • the installation 1 comprises a system 9 of uncoupling the sheet 3 relative to the chains 4 acting at the input of the magazine M and at least in the direction of débâchage.
  • the uncoupling system 9 comprises a rail A centered on each direction of movement of the chains 4 to ensure the separation of the carriages 8 with respect to the chains 4 during the uncovering of the surface.
  • the system 9 ensures the fastening of the sheet 3 relative to the chains 4 in the direction of sheeting, as will be described in the following description.
  • the carriages 8 provide a temporary and relative connection between the carriages 4 and the cover 3.
  • each carriage 8 comprises, as illustrated in FIG. Fig. 2 , at least one clamp 12 adapted for the temporary gripping of a roll 13 of a link 5 of the chain 4 and a locking unit 14 of said gripping.
  • the roller 13 advantageously extends in a direction d perpendicular to the direction of the chain.
  • Each carriage 8 thus makes it possible to improve the stability of the installation 1, in particular when the surface is covered. Indeed, the gripping of the roller 13 by the clamp 12 makes it possible to block the cover 3 vis-à-vis the chains 4 especially when it is subjected to gusts of wind.
  • the carriage 8 comprises the clamp 12, a stop 15, a tail 16 projecting and two fingers B.
  • the functions of the hook 15, the tail 16 and the fingers B will be detailed in the following description.
  • the clamp 12 comprises a fixed jaw 17 and a movable jaw 18.
  • the movable jaw 18 is typically rotated about an axis of rotation x with respect to the carriage 8 between the gripping position ( Fig. 3A ) and an open position ( Fig. 3B ).
  • the roller 13 of the link 5 In the open position, the roller 13 of the link 5 can enter or exit freely from the clamp 12 while in the gripping position, the roller 13 of the link 5 can not leave the housing defined by the fixed jaws 17 and 18 mobile .
  • the rotation of the movable jaw 18 is performed around the axis of rotation x which is substantially parallel to the direction d of the roll 13 when the latter is gripped by the clamp 12.
  • the movable jaw 18 is provided with a return system 19 such as a spring.
  • the locking unit 20 comprises a movable arm 21 rotated relative to the carriage 8 along an axis of rotation y which is substantially parallel to the x axis of rotation of the movable jaw 18.
  • the movable arm 21 is adapted to come into contact with the movable jaw 18.
  • the movable arm 21 is provided with a return device 22 in a so-called bracing position in which an end 23 of the movable arm 21 is in contact with the movable jaw 18.
  • the movable jaw 18 is braced against the end 23 of the movable arm 21.
  • the movable arm 21 is in the bracing position, the movable jaw 18 is in the gripping position.
  • the bracing has the advantage of blocking, locking the movable jaw 18 in the gripping position. Moreover, during the bracing effortless on the movable jaw 18 can, unless damage to the carriage 8, open the clamp 12.
  • the return device 22 acts on the movable arm 21 in a greater effort than a force of the return system 19 acting on the movable jaw 18.
  • the clamp 12 is in the gripping position.
  • the locking unit 20 comprises a latch 24 secured to the movable jaw 18.
  • This latch 24 has very advantageously a clearance 25 adapted to receive the end 23 of the movable arm 21, when the movable jaw 18 is in position. gripping position.
  • the movable arm 21 further comprises a release arm 26 whose function is that a user can release the gripping of the roll 13 by the clamp 12 .
  • the invention offers the advantage of preventing lifting of the cover relative to the chain 4, especially during wind squalls.
  • the carriage 8 comprises a secondary clamp 12a whose fixed jaw is the abutment 15.
  • the secondary clamp 12a comprises a secondary movable jaw 18a which is adapted to cooperate with the abutment 15 so as to activate the gripping of a roller 13.
  • the secondary movable jaw 18a is typically rotatable about an axis x ' with respect to the carriage, substantially parallel to the x-axis, between a gripping position and an open position.
  • the secondary movable jaw 18a is provided with a secondary return system 19a, which is adapted to return the secondary movable jaw 18a to its open position.
  • the carriage 8 is provided with a secondary locking unit 20a of the secondary clamp 12a.
  • the secondary locking unit 20a comprises a secondary movable arm 21a rotating about an axis y ' parallel to the y axis.
  • the secondary movable arm 21a is provided with a secondary biasing device 22a towards a bracing position of a secondary end 23a of the secondary movable arm 21a against the secondary movable jaw 18a.
  • the bracing between the secondary movable arm 21a and the secondary movable jaw 18a is of the same principle as the bracing between the movable arm 21 and the movable jaw 21 described above in the description.
  • the secondary return device 22a acts on the secondary movable arm 21a in a greater effort than a force of the secondary return system 19a acting on the secondary movable jaw 18a.
  • the secondary clamp 12a is in the gripping position.
  • the secondary locking unit 20a comprises a secondary lock 24a integral with the secondary movable jaw 18a.
  • the secondary lock 24a provides a secondary clearance 25a adapted to receive the secondary end 23a of the secondary movable arm 21a.
  • the secondary clamp 12a and the other clamp 12 are arranged such that a contact surface 17b for contact between the fixed jaw 17 and a roll 13, and a contact surface 15b for contact between the stop 15 and a roll 13, face each other.
  • the movable jaw 18 and secondary movable jaw 18a are disposed between the fixed jaw 17 and the 15.
  • the elements of the clamp 12 and secondary clamp 12a such as the movable arm 21 and the secondary movable arm 21a are arranged head to tail.
  • the head-to-tail arrangement of the movable arm 21 and the secondary movable arm 21a makes it possible to put the clamp 12 and the secondary clamp 12a in the gripping position simultaneously.
  • the installation 1 further comprises an actuating system 27 of the locking unit 20, in particular shown in FIGS. Fig. 5A to 5G which represent hooking steps of a hook 8 on the chain 4 during the sheeting of the surface.
  • the actuating system 27 makes it possible either to lock the carriage 8 on the chain 4 during the sheeting operation of the surface, or to unlock the carriage 8 of the chain 4 during the unstacking of the surface.
  • the actuating system 27 acts on the locking unit 20, either to lock the clamp 12 gripping the roller 13 of the link 5, or to release the clamp 12 and thus open it.
  • the actuating system 27 comprises at least one tooth 28 arranged on the pinions 6 and adapted to act on the locking unit 20, as described in the following description.
  • the chain 4 is represented in Fig. 5A to 5G by three consecutive links 5a , 5b and 5c .
  • These links 5a , 5b and 5c are respectively provided with rollers 13a , 13b and 13c.
  • the fingers B of the carriage 8 are designated B1 and B2 and respectively called finger-front and back-finger in the direction of movement of the carriage 8 for the covering of the surface.
  • the rail A comprises a so-called “outside” rail A1 and a rail called “inside” A2 , inside and outside being understood with respect to their respective distances with the pinion 6.
  • the pinion 6 comprises five teeth 28, all adapted to act on the locking unit 20.
  • the Fig. 5A has a position in which the carriage 8 is separated from the chain 4. In this position, the front fingers B1 and rear B2 of the trolley 8 are guided by the outer A1 and inner A2 rails so that the carriage 8 is disengaged vis-à-vis the chain 4. Accordingly, as the carriage 8 is offset relative to the pinion 6, the unit 20 and thus the movable arm 21 are free.
  • the carriage 8 is sufficiently close to the chain 4 so that the stop 15 of the carriage 8 intercepts or hooks the roll 13b of the link 5b so that, subsequently, the carriage 8 is driven by the chain 4 during the rotation of the pinion 6 in the direction of covering the surface.
  • the front finger B1 is not necessarily in contact with the outer rail A1 while the rear finger B2 is in contact with the outer rail A1.
  • the stop 15 is locked against the roller 13b of the link 5b.
  • the tooth 28 thus moves the movable arm 21 towards its retracted position.
  • the clamp 12 opens, so that the roll 13c can enter the opening of the clamp 12.
  • the front finger B1 is in contact with the outer rail A1, so as to press the stop 15 against the roll 13b of the link 5b and push the clamp 12 to the roller 13c of the link 5c .
  • the tail 16 comes into contact with the roller 13a , which has the effect of tilting the carriage 8 around the roller 13b around which the stopper 15 is hooked. This has the effect of making the roll 13c penetrate into the clamp 12.
  • the actuating system 27 and the uncoupling system 9 allow each other to unlock the carriage 8 of the chain 4 during the uncoupling operation. For that, it is enough to adapt the reasoning used to describe the Fig. 5A to 5G in the opposite direction, that is to say from 5G to 5A .
  • the implementation of the carriage 8 comprising the clamp 12 and the secondary clamp 12a is an adaptation of the implementation of the carriage 8 comprising the clamp 12, the stop 15 and the tail 16.
  • the carriage 8 comprising the two clamps thus contributes to the resolution of the technical problem by improving the fastening of the cover 3 relative to the chain 4 at the store M when sheeting the surface.
  • this carriage 8 improves the separation of the cover 3 with respect to the chain 4 during unstacking, vis-à-vis the prior art.
  • Fig. 6 Another feature of the invention is presented at Fig. 6 .
  • at least one link 5 of the chain 4 is provided with a wheel 29, which sufficiently exceeds the link 5 to be in contact with the ground surrounding the surface.
  • the wheel 29 advantageously makes it possible to make the chain 4 freestanding.
  • this wheel 29 is carried by one link in five.
  • the wheel 29 is advantageously mounted on a roller shaft 30 which is fixed on the link 5 and which extends along an axis substantially parallel to the direction d along which the roller 13 of the link 5 extends .
  • the link 5 is provided with an angular adjustment device 31 for varying, in the plane of the surface, the direction of translation of the chain 4, by varying an angular displacement of the roulette tree 30 relative to the link 5.
  • an alternative embodiment consists in molding the body of the link 32 in such a way that it comprises two side plates 33 interconnected by a tubular portion 34.
  • the side plates 33 at one end comprise a clevis and, at the opposite end at the level of the tubular portion 34 a recess 35, intended to receive a clevis of a consecutive link.
  • the side plates 33 are provided at the level of the yoke, through holes 39 of diameters substantially identical to an internal diameter of the tubular portion 34.
  • the link 5 further comprises a rivet 36 comprising a male portion 37 and a female portion 38 and extending in the direction d.
  • This rivet 36 links two successive links while leaving a degree of freedom in rotation around the direction d.
  • the female portion 38 and the male portion 37 have complementary attachment ends so that they can be attached to each other.
  • the dimensions of the through holes 39, the tubular portion 34 and the rivet 36 allow the rotation of the two successive links around the rivet 36.
  • the male 37 and female 38 are provided at their free ends with stop protrusions 40 , intended to maintain the link between the two successive links.
  • the angular adjustment device 31 comprises two openings 41, 42 in the lateral plates 33 in which the roller shaft 30 is inserted, said roller shaft 30 and a fluted angular adjustment washer 43 of the deflection. the roulette tree 30.
  • a first opening 41 and a first end 44 of the roller shaft 30 comprise complementary shapes so as to promote a displacement in a substantially horizontal plane of the roller shaft 30 with respect to the link 5.
  • the fluted washer 43 is pivotally mounted on a second end 45 of the roller shaft 30.
  • a second opening 42 consisting of an oblong hole whose plane walls are parallel to the plane of the surface when the surface is covered, is surrounded by a groove 46 of elliptical or ovoidal shape, the fluted washer 43 being provided with a finger 47 adapted to be moved in the groove 46 so that the inclination of the roller shaft 30 in the horizontal plane varied.
  • the second end 45 of the roller shaft 30 is offset in the oblong hole of the second opening 42.
  • the first end 44 of the roller shaft 30 is provided with a shoulder 48, itself provided with a flat 49 while the first opening 41 consists of a complementary oblong hole, admitting however a mechanical play to allow the variation of the inclination of the roulette shaft 30 in the horizontal plane.
  • the groove 46 and the fluted washer 43 cooperate to allow an angular displacement of the roller shaft 30 to 5 ° around a median position along an axis z , substantially parallel to the axis d.
  • the groove 46 and the fluted washer 43 cooperate to allow an angular displacement of the roller shaft 30 to 2 ° around the central position along the z axis .
  • the groove 46 and the fluted washer 43 cooperate to allow an angular displacement of the roller shaft 30 to 1 ° around the central position along the axis z.
  • the installation 1 comprises pinions 6 adapted to move said link 5.
  • An embodiment of such a pinion 6 is shown in FIG. Fig . 7 .
  • This pinion comprises five teeth, one of which is said hollow tooth 50 is adapted to move the links 5 of the chain 4 while leaving a space to receive the wheel 29.
  • the hollow tooth 50 comprises at least two abutments, a so-called covering stop 51 and a so-called clearing abutment 52.
  • the sheeting stops 51 and débhachage 52 respectively allow to act on the links 5 during the sheeting of the surface or when uncovering the surface.
  • the hollow tooth 50 has between the stops of the covering 51 and unstitching 52 a recess 53 of material adapted to receive the wheel 29.
  • the hollow tooth 50 consists of two wings 54 forming the abutments 51 and 52 and between which is left free a recess space 53, the wings 54 being, in fixed connection, fixed on the pinion 6 .
  • the advantage offered by the wheel 29 is that of contributing to the resolution of the technical problem, in that it makes it possible to increase the stability of the installation 1.
  • the peripheral ground at the surface of a pool is slightly overhanging.
  • the wheel 29 can counteract the effects of the cant during the sheeting of the surface.
  • Fig. 8 represents other particularly advantageous features of the invention.
  • the invention proposes that the head beam 2 and the cross members 10 are hollow profiles, typically aluminum.
  • the hollow aluminum profiles have the advantage of being stronger and lighter than solid parts with the same dimensions, resistant in bending.
  • the brackets 11 are threaded into the crosspieces for attachment, which offers a particularly advantageous simplification of the implementation of the installation 1.
  • the head beam 2 comprises a cross member 10 and, on the other hand, Another of the crossbar 10, a bracket 11.
  • the invention proposes to provide crosspieces 10 provided with connecting side grooves 56 and straps 55 provided with cylindrical ends 57 to be inserted into the lateral connecting grooves 56.
  • the combination of the cylindrical ends 57 and the lateral connecting grooves 56 offers the advantage of not requiring the fastening of the straps 55 by implementing screw systems, which improves the reliability of the installation 1 .
  • the head beam 2 has very advantageously a transverse groove 58 extending all the way through the crossmember 10 while the sheet is provided with a transverse cylindrical bead 59 intended to be inserted into the transverse groove 58.
  • the combination of the transverse groove 58 and transverse bead 59 allows a distribution of any tensioning force between the sheet 3 and the head beam 2.
  • the combination improves a seal between said sheet 3 and said head beam 2.
  • a cap 60 is fixed on the head beam 2 so as to cover the bead of the sheet 3 all along the cross member 10 of said head beam 2.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Tents Or Canopies (AREA)

Abstract

L'invention concerne une installation pour bâcher et débâcher une surface comportant une bâche montée sur une poutre de tête, deux chaînes de maillons rigide en poussée, commandée en translation et comportant une extrémité reliée à la poutre de tête, pour déplacer la bâche, deux pignons coaxiaux, liés en rotation par un arbre de liaison et comportant des dents adaptées aux maillons pour commander la translation des chaînes, une série de chariots (8) assurant une liaison temporaire entre la bâche et les chaînes, un système de désolidarisation de la bâche par rapport à la chaîne au niveau du magasin dans le sens de débâchage. Chaque chariot (8) comporte une pince (12) adaptée pour la préhension temporaire d'un rouleau d'un maillon de la chaîne et une unité de verrouillage de la préhension de la pince (12) relativement à la chaîne de manière à empêcher un soulèvement de la bâche par rapport à la chaîne.The invention relates to an installation for covering and removing a surface comprising a tarpaulin mounted on a head beam, two chains of rigid links in push, controlled in translation and having an end connected to the head beam, to move the tarpaulin, two coaxial pinions, connected in rotation by a connecting shaft and having teeth adapted to the links for controlling the translation of the chains, a series of carriages (8) providing a temporary connection between the tarpaulin and the chains, a system for separating the tarpaulin relative to the chain at the store in the unclogging direction. Each carriage (8) comprises a clamp (12) adapted for temporarily gripping a roll of a chain link and a locking unit for gripping the clamp (12) relative to the chain so as to prevent a raising the tarpaulin relative to the chain.

Description

La présente invention concerne le domaine des dispositifs de couverture d'une surface.The present invention relates to the field of devices for covering a surface.

L'objet de l'invention trouve une application particulière dans tous les domaines où une surface, délimitant un espace, doit être recouverte par un élément de protection tel qu'une bâche, un rideau ou un volet à lames.The object of the invention finds particular application in all areas where a surface, defining a space, must be covered by a protective element such as a tarpaulin, a curtain or a leaf shutter.

Plus particulièrement, l'invention est adaptée pour recouvrir la surface d'une piscine à l'aide d'une bâche.More particularly, the invention is adapted to cover the surface of a pool with a tarpaulin.

Dans l'état de la technique, il existe de nombreuses solutions pour recouvrir une surface à l'aide d'une bâche.In the state of the art, there are many solutions for covering a surface with a tarpaulin.

Par exemple, le brevet EP 0 634 981 décrit un dispositif pour recouvrir et découvrir une surface à l'aide d'un élément de couverture enroulable tel qu'une bâche. Ce dispositif est réalisé sous forme d'un portique pourvu de moyens de déplacement de la bâche au-dessus de la surface tels qu'une chaîne rigide en poussée se déplaçant de part et d'autre de la surface. Ces chaînes sont commandées en translation de manière à pousser une poutre de tête sur laquelle est montée la bâche. De plus, le dispositif est pourvu d'une série de chariots assurant une liaison temporaire entre la bâche et les chaînes. Ces chariots sont notamment destinés à être répartis le long de la bâche, lorsque cette dernière recouvre la surface. Le dispositif comporte entre outre un système de désolidarisation de la bâche par rapport à la chaîne au niveau d'un magasin dans le sens de débâchage, pour un rangement par escamotage de la bâche par rapport à la chaîne.For example, the patent EP 0 634 981 discloses a device for covering and uncovering a surface using a roll-up cover element such as a tarpaulin. This device is made in the form of a gantry provided with means for moving the sheet above the surface such as a rigid chain pushing moving on either side of the surface. These chains are controlled in translation so as to push a head beam on which is mounted the cover. In addition, the device is provided with a series of trolleys providing a temporary connection between the cover and the chains. These carts are intended to be distributed along the cover, when the latter covers the surface. The device further comprises a system for separating the sheet from the chain at a store in the unclogging direction, for storage by retraction of the sheet relative to the chain.

Un tel dispositif offre notamment l'avantage d'assurer le bâchage et le débâchage de la surface et permet d'être totalement escamoté en position de débâchage, interdisant toute détérioration en position débâchée. De plus, lorsque la surface est débâchée, les chaînes sont complètement escamotées, ce qui est un avantage particulièrement intéressant dans le domaine des piscines puisque le dispositif ne nécessite pas la présence de rails qui sont particulièrement inesthétiques et source de dangers pour les utilisateurs.Such a device offers the particular advantage of ensuring the sheeting and uncovering of the surface and allows to be completely retracted in unclogging position, prohibiting any deterioration in the open position. In addition, when the surface is released, the chains are completely retracted, which is a particularly advantageous advantage in the field of pools since the device does not require the presence of rails that are particularly unsightly and a source of danger for users.

Toutefois, un tel dispositif peut présenter certains inconvénients, en position de bâchage de la surface, lorsque surviennent des conditions climatiques particulièrement exceptionnelles et en particulier, des fortes bourrasques de vent. Dans ces conditions, il peut arriver que certains chariots viennent à se décrocher des chaînes, empêchant ainsi la bâche de jouer pleinement son rôle de bâchage. Outre le fait que la bâche ne recouvre plus convenablement l'espace dédié, la remise en place des chariots sur les chaînes constitue une opération relativement délicate à mener à bien. Par ailleurs, comme les chaînes n'ont pas de rails pour les guider, les surfaces les recevant ne sont pas parfaitement planes, alors, il est possible que le bâchage de la piscine soit insatisfaisant.However, such a device may have certain drawbacks, in the position of covering the surface, when particularly exceptional climatic conditions occur and in particular, strong wind squalls. Under these conditions, it may happen that some carts come off the chains, thus preventing the tarp from fully playing its role of covering. In addition to the fact that the tarpaulin does not cover properly the dedicated space, the replacement of trolleys on the chains is a relatively difficult operation to carry out. Moreover, as the chains do not have rails to guide them, the surfaces receiving them are not perfectly flat, so, it is possible that the covering of the swimming pool is unsatisfactory.

La présente invention vise donc à remédier à ces inconvénients en proposant un dispositif pour bâcher et débâcher une surface s'escamotant en position de débâchage en libérant totalement la surface et apte à pouvoir recouvrir la surface en assurant une stabilité du bâchage amélioré par rapport à l'Art Antérieur.The present invention therefore aims to remedy these drawbacks by proposing a device for covering and unclogging a surface retracting in the unclogging position by completely releasing the surface and able to cover the surface by providing improved stability of the tarpaulin compared to the Prior Art.

Pour atteindre un tel objectif, l'objet de l'invention concerne donc une installation pour bâcher et débâcher une surface, comportant :

  • une bâche montée au moins sur une poutre de tête ;
  • de part et d'autre de la bâche, une chaîne de maillons rigide en poussée, commandée en translation et comportant une extrémité reliée à la poutre de tête, pour déplacer la bâche entre un magasin de réception de la bâche en position débâchée et une position de bâchage de la surface ;
  • deux pignons coaxiaux, liés en rotation par un arbre de liaison et comportant des dents adaptées aux maillons des chaînes pour commander la translation des chaînes selon un premier sens dit de bâchage pour bâcher la surface, et selon un second sens contraire au premier, dit de débâchage pour débâcher la surface ;
  • une série de chariots assurant une liaison temporaire entre la bâche et les chaînes, et destinés à être répartis le long de la bâche en position de bâchage de la surface, et
  • au niveau du magasin, un système de désolidarisation de la bâche par rapport à la chaîne dans le sens de débâchage, pour un rangement et un escamotage de la bâche par rapport à la chaîne, et de solidarisation de la bâche par rapport à la chaîne dans le sens de bâchage.
To achieve such an objective, the object of the invention therefore relates to an installation for covering and removing a surface, comprising:
  • a tarpaulin mounted at least on a head beam;
  • on either side of the tarpaulin, a chain of rigid links in thrust, controlled in translation and having an end connected to the head beam, for moving the sheet between a receiving magazine of the tarpaulin in the open position and a position sheeting the surface;
  • two coaxial pinions, rotatably connected by a connecting shaft and having teeth adapted to the links of the chains for controlling the translation of the chains in a first direction said to tarpaulin the surface, and in a second direction opposite to the first, said de uncovering to break the surface;
  • a series of trolleys providing a temporary connection between the tarpaulin and the chains, and intended to be distributed along the tarpaulin in the covering position of the surface, and
  • at the store, a system for separating the tarpaulin from the chain in the uncoupling direction, for storage and retraction of the tarpaulin relative to the chain, and for securing the tarpaulin relative to the chain in the meaning of sheeting.

Selon l'invention :

  • chaque chariot comporte au moins une pince adaptée pour la préhension temporaire d'un rouleau d'un maillon de la chaîne et une unité de verrouillage de la préhension de la pince relativement à la chaîne de manière à empêcher un soulèvement de la bâche par rapport à la chaîne, et
  • l'installation comprend un système d'actionnement de l'unité de verrouillage au niveau du magasin pour bloquer le chariot sur la chaîne dans le sens de bâchage et pour débloquer le chariot de la chaîne dans le sens de débâchage.
According to the invention:
  • each carriage comprises at least one gripper adapted for temporary gripping of a roller of a chain link and a locking unit of gripping of the gripper relative to the chain so as to prevent lifting of the sheet with respect to the chain, and
  • the installation comprises a system for actuating the lock unit at the store to lock the carriage on the chain in the direction of covering and to unblock the carriage of the chain in the uncoupling direction.

L'installation selon l'invention comporte également en combinaison, l'une et/ou l'autre des caractéristiques additionnelles suivantes :

  • la pince comprend un mors fixe et un mors mobile en rotation par rapport au chariot entre une position de préhension du rouleau d'un maillon et une position ouverte, le mors mobile étant pourvu d'un système de rappel en position ouverte, et l'unité de verrouillage comprend un bras mobile en rotation par rapport au chariot entre une position dite d'arc-boutement dans laquelle le mors mobile se trouve arc-bouté contre une extrémité du bras mobile maintenant ainsi la pince en position de préhension et une position escamotée pour libérer le mors mobile, le bras mobile étant pourvu d'un dispositif de rappel en position d'arc-boutement ;
  • l'unité de verrouillage comporte un verrou solidaire du mors mobile, et présente un dégagement adapté pour recevoir, lorsque le mors mobile est en position de préhension, l'extrémité du bras mobile, qui exerce une poussée de blocage sur ledit verrou ;
  • le système d'actionnement comprend l'unité de verrouillage et les pignons qui comprennent au moins une dent adaptée pour agir sur l'unité de verrouillage de telle sorte que lorsque la chaîne est déplacée selon le sens de bâchage et qu'un chariot est positionné sur elle, alors la pince se ferme sur un rouleau d'un maillon afin de bloquer le chariot sur la chaîne et lorsque la chaîne est déplacée selon le sens de débâchage et lorsqu'un chariot est déplacé au niveau du pignon alors la dent agit sur l'unité de verrouillage en actionnant l'ouverture de la pince afin de débloquer le chariot de la chaîne ;
  • au moins un maillon de la chaîne est pourvu d'une roulette au moyen de laquelle, la chaîne prend appui sur le sol, la roulette étant montée sur un axe sensiblement horizontal et muni d'un dispositif de réglage angulaire pour faire varier dans le plan de la surface la direction de la translation de la chaîne ;
  • les chariots sont portés deux à deux par une transverse s'étendant parallèlement à la poutre de tête et constituée d'un profilé creux et de deux potences, les potences étant enfilées dans le profilé creux à ses extrémités et prenant appui sur un chariot respectivement ;
  • deux traverses successives sont reliées entre elles par au moins une sangle, pourvue d'extrémités cylindriques, les traverses étant pourvues de gorges adaptées à recevoir lesdites extrémités cylindriques ;
  • la bâche est pourvue d'un bourrelet cylindrique transversal et en ce que la poutre de tête comprend un profilé creux pourvu d'une gorge transversale adaptée pour recevoir le bourrelet cylindrique, un capot recouvrant le bourrelet de la bâche.
The installation according to the invention also comprises in combination, one and / or the other of the following additional characteristics:
  • the clamp comprises a fixed jaw and a jaw mobile in rotation with respect to the carriage between a gripping position of the roll of a link and an open position, the movable jaw being provided with a return system in the open position, and the locking unit comprises an arm movable in rotation relative to the carriage between a so-called bracing position in which the movable jaw is braced against one end of the movable arm thus holding the clamp in the gripping position and a retracted position to release the movable jaw, the movable arm being provided with a return device in the bracing position;
  • the locking unit comprises a latch secured to the movable jaw, and has a clearance adapted to receive, when the movable jaw is in the gripping position, the end of the movable arm, which exerts a locking thrust on said latch;
  • the actuating system comprises the locking unit and the pinions which comprise at least one tooth adapted to act on the locking unit so that when the chain is moved in the direction of covering and a carriage is positioned on it, then the clamp closes on a roll of a link to lock the carriage on the chain and when the chain is moved in the unclogging direction and when a carriage is moved at the pinion then the tooth acts on the locking unit by actuating the opening of the clamp to unlock the carriage of the chain;
  • at least one link in the chain is provided with a wheel by means of which the chain bears on the ground, the wheel being mounted on a substantially horizontal axis and provided with an angular adjustment device for varying in the plane from the surface the direction of the translation of the chain;
  • the carriages are carried two by two by a transverse extending parallel to the head beam and consisting of a hollow section and two brackets, the brackets being slipped into the hollow section at its ends and bearing on a carriage respectively;
  • two successive ties are interconnected by at least one strap, provided with cylindrical ends, the cross members being provided with grooves adapted to receive said cylindrical ends;
  • the sheet is provided with a transverse cylindrical bead and in that the head beam comprises a hollow section provided with a transverse groove adapted to receive the cylindrical bead, a cap covering the bead of the sheet.

Le dispositif selon l'invention permet donc d'assurer le débâchage de la surface en étant totalement escamoté, et en libérant totalement la surface tout en améliorant la stabilité du bâchage en interdisant le décrochage des chariots par le vent lorsque la surface est bâchée.The device according to the invention thus makes it possible to ensure the uncovering of the surface while being completely retracted, and by completely releasing the surface while improving the stability of the tarpaulin by preventing the wagons from being unhooked by the wind when the surface is covered.

Diverses autres caractéristiques ressortent de la description faite ci-dessous en référence aux dessins annexés qui montrent à titre illustratif et non limitatif, des exemples et formes de réalisation de l'objet de l'invention.

  • La Figure 1 est une vue éclatée en perspective partielle d'une installation de bâchage et de débâchage conforme à l'invention.
  • La Figure 2 est une vue en perspective d'un chariot objet de l'invention.
  • Les Figures 3A et 3B sont des vues en coupe transversale du chariot objet de l'invention et montrant particulièrement des éléments d'une unité de verrouillage du chariot conforme à l'invention en position respectivement de préhension et de non préhension.
  • La Figure 4 représente une variante de réalisation du chariot comprenant deux pinces.
  • Les Figures 5A à 5G sont des vues en coupe transversale schématique, d'un système d'actionnement d'une unité de verrouillage et représentant particulièrement une séquence de blocage d'un chariot sur la chaîne.
  • La Figure 6 représente une chaîne de l'installation selon l'invention dont, à titre illustratif, un maillon sur cinq est équipé d'une roulette intégrée.
  • Les Figures 6A à 6C sont des vues éclatées en perspective du maillon équipé de la roulette.
  • Les Figures 6D et 6E sont des coupes azimutales du maillon équipé de la roulette et montrant un axe sur lequel est montée la roulette, l'axe étant adapté pour faire varier dans le plan azimutal son inclinaison.
  • La Figure 7 représente un pignon du dispositif de l'invention adapté pour décrocher la chaîne comportant un maillon équipé d'une roulette.
  • La Figure 8 représente une vue éclatée en perspective schématique d'éléments de structure de l'installation selon l'invention.
Various other characteristics appear from the description given below with reference to the accompanying drawings which show by way of illustration and without limitation, examples and embodiments of the subject of the invention.
  • The Figure 1 is an exploded view in partial perspective of a tarpaulin and débâchage installation according to the invention.
  • The Figure 2 is a perspective view of a trolley object of the invention.
  • The Figures 3A and 3B are cross-sectional views of the trolley object of the invention and showing particularly elements of a locking unit of the carriage according to the invention respectively in position of gripping and non-gripping.
  • The Figure 4 represents an alternative embodiment of the carriage comprising two clamps.
  • The Figures 5A to 5G are schematic cross-sectional views of an actuating system of a locking unit and particularly showing a blocking sequence of a carriage on the chain.
  • The Figure 6 represents a chain of the installation according to the invention of which, by way of illustration, one link in five is equipped with an integrated wheel.
  • The Figures 6A to 6C are exploded perspective views of the link equipped with the wheel.
  • The Figures 6D and 6E are azimuthal sections of the link equipped with the wheel and showing an axis on which is mounted the wheel, the axis being adapted to vary in the azimuthal plane its inclination.
  • The Figure 7 represents a pinion of the device of the invention adapted to unhook the chain comprising a link equipped with a wheel.
  • The Figure 8 represents an exploded schematic perspective view of structural elements of the installation according to the invention.

La présente invention propose une nouvelle installation 1 pour bâcher et débâcher une surface telle que la surface d'une piscine. Cette nouvelle installation offre l'avantage esthétique de débâcher la surface en s'escamotant totalement de manière à disparaître de la vue des utilisateurs. Un autre avantage offert par l'invention consiste à améliorer la stabilité, lors du bâchage de la surface ou lorsqu'elle est bâchée, par rapport aux installations déjà connues.The present invention proposes a new installation 1 for covering and removing a surface such as the surface of a swimming pool. This new installation offers the aesthetic advantage of loosening the surface by retracting completely so as to disappear from the view of users. Another advantage offered by the invention is to improve the stability, during the sheeting of the surface or when sheeted, compared to the already known installations.

Ainsi, la Fig. 1 illustre en partie une installation 1 selon la présente invention, en ce sens que l'installation dans son ensemble est symétrique à l'illustration de la Fig. 1 . So, the Fig. 1 illustrates in part an installation 1 according to the present invention, in that the installation as a whole is symmetrical to the illustration of the Fig. 1 .

L'installation 1 comporte une poutre de tête 2 sur laquelle est montée ou fixée une bâche 3. Typiquement, selon l'invention, « bâche » désigne tout moyen souple ou rigide d'occultation de la surface. Ainsi, la bâche 3 peut être une membrane souple ou une juxtaposition des panneaux rigides, en matériaux communément utilisés pour l'homme du métier.The installation 1 comprises a head beam 2 on which is mounted or fixed a tarpaulin 3. Typically, according to the invention, "tarpaulin" means any flexible or rigid means of occultation of the surface. Thus, the cover 3 may be a flexible membrane or a juxtaposition of rigid panels, of materials commonly used by those skilled in the art.

De part et d'autre de la bâche 3, l'installation 1 comporte une chaîne 4, qui est composée d'une série de maillons 5 et qui possède la caractéristique d'être rigide en poussée, avec une extrémité reliée à la poutre de tête pour déplacer la bâche 3 entre un magasin M de réception de la bâche 3 en position débâchée de la surface et une position de bâchage complète de la surface. La chaîne 4 est commandée en déplacement par un pignon 6. Les maillons 5 qui seront plus précisément décrits dans la suite de la description sont aménagés pour d'une part, autoriser un pivotement relatif entre les maillons 5 dans un sens donné, pour la rentrée des chaînes 4 dans le magasin M et, d'autre part, interdire un tel pivotement relatif dans le sens contraire de sorte que les maillons 5 s'appuient les uns sur les autres afin que les chaînes 4 deviennent rigides en poussée lors de l'opération de bâchage. Avantageusement, l'installation 1 comporte donc deux chaînes 4, chacune positionnée de part et d'autre de la bâche 3 de manière à s'étendre sur deux côtés opposés de la surface à recouvrir. En conséquence, l'installation comporte également deux pignons 6 chacun adapté pour déplacer l'une des chaînes 4. Aussi, les deux pignons 6 sont liés en rotation par un arbre de liaison (non représenté).On both sides of the cover 3, the installation 1 comprises a chain 4, which is composed of a series of links 5 and which has the characteristic of being rigid in thrust, with one end connected to the beam of head to move the cover 3 between a magazine M receiving the cover 3 in the open position of the surface and a full covering position of the surface. The chain 4 is controlled in displacement by a pinion 6. The links 5 which will be more precisely described in the following description are arranged to firstly allow a relative pivoting between the links 5 in a given direction, for the return chains 4 in the magazine M and, on the other hand, prohibit such relative pivoting in the opposite direction so that the links 5 rest on each other so that the chains 4 become rigid in thrust when the sheeting operation. Advantageously, the installation 1 thus comprises two chains 4, each positioned on either side of the sheet 3 so as to extend on two opposite sides of the surface to be covered. Consequently, the installation also comprises two pinions 6 each adapted to move one of the chains 4. Also, the two pinions 6 are connected in rotation by a connecting shaft (not shown).

Typiquement, une mise en rotation des pignons 6 est commandée par un moteur 7 qui est activé à l'aide d'une commande électrique telle qu'un bouton poussoir, une télécommande ou une cellule programmable. La mise en rotation des pignons 6 entraine la translation des chaînes 4 soit selon un premier sens dit de bâchage pour bâcher la surface, soit selon un second sens contraire au premier sens dit de débâchage pour débâcher la surface.Typically, a rotation of the pinions 6 is controlled by a motor 7 which is activated using an electrical control such as a push button, a remote control or a programmable cell. The rotation of the pinions 6 causes the translation of the chains 4 is in a first direction said sheeting to cover the surface, or in a second direction opposite to the first sense of said débâchage to unclog the surface.

L'installation 1 comporte, de surcroît, une série de supports ou de chariots 8 qui assurent une liaison entre la bâche 3 et les chaînes 4. Tel que cela apparaît à la Fig. 1 , les chariots 8 sont portés par des traverses 10 et, plus précisément par des potences 11 montées à chaque extrémité des traverses 10. Les traverses 10 s'étendent avantageusement parallèlement à la poutre de tête 2. Avantageusement, les traverses 10 consistent en des profilés creux qui seront décrits dans la suite de la description. Les potences 11 sont typiquement enfilées dans les profilés creux des traverses 10. Très avantageusement, les chariots 8 sont portés deux à deux par une traverse 10 et deux potences 11, assurant ainsi, lors de la mise en translation des chariots 4, la translation des traverses 10 et potences 11 parallèlement à la poutre de tête 2. The installation 1 comprises, in addition, a series of supports or carriages 8 which provide a link between the cover 3 and the chains 4. As it appears in the Fig . 1 , the carriages 8 are carried by sleepers 10 and, more precisely, by brackets 11 mounted at each end of the crosspieces 10. The crosspieces 10 advantageously extend parallel to the head beam 2. Advantageously, the crosspieces 10 consist of profiles hollow which will be described in the following description. The brackets 11 are typically threaded into the hollow profiles of the 10. Very advantageously, the carriages 8 are carried two by two by a cross member 10 and two brackets 11, thus ensuring, during the translation of the carriages 4, the translation of the crosspieces 10 and 11 of the gallows parallel to the head beam 2.

Une liaison démontable ou temporaire est réalisée entre les chariots 8 et les chaînes 4 en ce sens que la fixation des chariots 8 sur les chaines 4 est réversible : les chariots 8 sont montés solidaires avec les chaines 4 lors du bâchage de la surface et sont désolidarisés par rapport aux chaines 4 lors du débâchage de la surface. Pour ce faire, l'installation 1 comporte un système de désolidarisation 9 de la bâche 3 par rapport aux chaînes 4 agissant au niveau de l'entrée du magasin M et au moins selon le sens de débâchage. Le système de désolidarisation 9 comprend un rail A centré sur chaque direction de déplacement des chaînes 4 pour assurer la désolidarisation des chariots 8 par rapport aux chaines 4 lors du débâchage de la surface. De même, le système 9 assure la solidarisation de la bâche 3 par rapport aux chaînes 4 dans le sens de bâchage, comme cela sera décrit dans la suite de la description.A demountable or temporary connection is made between the carriages 8 and the chains 4 in the sense that the fixing of the carriages 8 on the chains 4 is reversible: the carriages 8 are mounted integral with the chains 4 during the sheeting of the surface and are disconnected compared to the chains 4 during the uncovering of the surface. To do this, the installation 1 comprises a system 9 of uncoupling the sheet 3 relative to the chains 4 acting at the input of the magazine M and at least in the direction of débâchage. The uncoupling system 9 comprises a rail A centered on each direction of movement of the chains 4 to ensure the separation of the carriages 8 with respect to the chains 4 during the uncovering of the surface. Similarly, the system 9 ensures the fastening of the sheet 3 relative to the chains 4 in the direction of sheeting, as will be described in the following description.

Ainsi, les chariots 8 assurent une liaison temporaire et relative entre les chariots 4 et la bâche 3. Thus, the carriages 8 provide a temporary and relative connection between the carriages 4 and the cover 3.

Selon une caractéristique particulièrement avantageuse, chaque chariot 8 comporte, comme illustré à la Fig. 2 , au moins une pince 12 adaptée pour la préhension temporaire d'un rouleau 13 d'un maillon 5 de la chaîne 4 et une unité de verrouillage 14 de ladite préhension. Le rouleau 13 s'étend avantageusement selon une direction d perpendiculaire à la direction de la chaîne. Ainsi, lorsque la pince 12 d'un chariot 8 est en position de préhension d'un maillon 5, ladite pince 12 empêche un soulèvement de la bâche 3 par rapport à la chaîne 4. According to a particularly advantageous characteristic, each carriage 8 comprises, as illustrated in FIG. Fig. 2 , at least one clamp 12 adapted for the temporary gripping of a roll 13 of a link 5 of the chain 4 and a locking unit 14 of said gripping. The roller 13 advantageously extends in a direction d perpendicular to the direction of the chain. Thus, when the clamp 12 of a carriage 8 is in the gripping position of a link 5, said clamp 12 prevents lifting of the cover 3 with respect to the chain 4.

Chaque chariot 8 permet donc d'améliorer la stabilité de l'installation 1, en particulier lorsque la surface est bâchée. En effet, la préhension du rouleau 13 par la pince 12 permet de bloquer la bâche 3 vis-à-vis des chaînes 4 notamment lorsque celle-ci est soumise à des rafales de vent.Each carriage 8 thus makes it possible to improve the stability of the installation 1, in particular when the surface is covered. Indeed, the gripping of the roller 13 by the clamp 12 makes it possible to block the cover 3 vis-à-vis the chains 4 especially when it is subjected to gusts of wind.

Le chariot 8 comprend la pince 12, une butée 15, une queue 16 en saillie et deux doigts B. Les fonctions du crochet 15, de la queue 16 et des doigts B seront détaillées dans la suite de la description.The carriage 8 comprises the clamp 12, a stop 15, a tail 16 projecting and two fingers B. The functions of the hook 15, the tail 16 and the fingers B will be detailed in the following description.

Selon une variante préférée de réalisation du chariot 8, illustrée par les Fig. 3A et 3B , la pince 12 comprend un mors fixe 17 et un mors mobile 18. Le mors mobile 18 est typiquement en rotation autour d'un axe de rotation x par rapport au chariot 8 entre la position de préhension ( Fig. 3A ) et une position ouverte ( Fig. 3B ). According to a preferred embodiment of the carriage 8, illustrated by the Fig. 3A and 3B the clamp 12 comprises a fixed jaw 17 and a movable jaw 18. The movable jaw 18 is typically rotated about an axis of rotation x with respect to the carriage 8 between the gripping position ( Fig. 3A ) and an open position ( Fig. 3B ).

Dans la position ouverte, le rouleau 13 du maillon 5 peut entrer ou sortir librement de la pince 12 tandis qu'en position de préhension, le rouleau 13 du maillon 5 ne peut sortir du logement délimité par les mors fixe 17 et mobile 18. Afin d'assurer la préhension du rouleau 13 du maillon 5, la rotation du mors mobile 18 est effectuée autour de l'axe de rotation x qui est sensiblement parallèle à la direction d du rouleau 13 lorsque celui-ci est saisi par la pince 12. In the open position, the roller 13 of the link 5 can enter or exit freely from the clamp 12 while in the gripping position, the roller 13 of the link 5 can not leave the housing defined by the fixed jaws 17 and 18 mobile . to grip the roll 13 of the link 5, the rotation of the movable jaw 18 is performed around the axis of rotation x which is substantially parallel to the direction d of the roll 13 when the latter is gripped by the clamp 12.

Tel que cela apparaît plus précisément sur les Fig. 3A, 3B , le mors mobile 18 est pourvu d'un système de rappel 19 tel qu'un ressort.As it appears more precisely on the Fig. 3A, 3B , The movable jaw 18 is provided with a return system 19 such as a spring.

Ce système de rappel 19 permet avantageusement de rappeler le mors mobile 18 vers sa position ouverte. Ainsi, en l'absence d'autre effort sur le mors mobile 18, la pince 12 est ouverte ( Fig. 3B ). C'est la raison pour laquelle le chariot 8 est avantageusement pourvu d'une unité de verrouillage 20 de la pince 12, lorsque ladite pince 12 saisit le rouleau 13 du maillon 5. Selon une variante de réalisation préférée, l'unité de verrouillage 20 comprend un bras mobile 21 en rotation par rapport au chariot 8 selon un axe de rotation y qui est sensiblement parallèle à l'axe x de rotation du mors mobile 18. Tel que cela apparait plus précisément sur les figures, le bras mobile 21 est adapté pour venir au contact du mors mobile 18. This return system 19 advantageously remembers the movable jaw 18 to its open position. Thus, in the absence of any other effort on the movable jaw 18, the clamp 12 is open ( Fig. 3B ). This is the reason why the carriage 8 is advantageously provided with a locking unit 20 of the clamp 12, when said clamp 12 grasps the roll 13 of the link 5. According to a preferred embodiment, the locking unit 20 comprises a movable arm 21 rotated relative to the carriage 8 along an axis of rotation y which is substantially parallel to the x axis of rotation of the movable jaw 18. As it appears more precisely in the figures, the movable arm 21 is adapted to come into contact with the movable jaw 18.

Avantageusement, le bras mobile 21 est pourvu d'un dispositif de rappel 22 en une position dite d'arc-boutement dans laquelle une extrémité 23 du bras mobile 21 est au contact du mors mobile 18. Dans cette position d'arc-boutement, le mors mobile 18 se trouve arc-bouté contre l'extrémité 23 du bras mobile 21. Lorsque le bras mobile 21 est en position d'arc-boutement, le mors mobile 18 est en position de préhension. L'arc-boutement présente l'avantage de bloquer, de verrouiller le mors mobile 18 en position de préhension. De plus, lors de l'arc-boutement aucun effort sur le mors mobile 18 ne peut, à moins d'endommager le chariot 8, ouvrir la pince 12. Par contre, pour ouvrir la pince 12, il suffit d'agir sur le bras mobile 21, de manière à le mettre en rotation vers une position escamotée dans laquelle il n'est plus en contact avec le mors mobile 18. Alors, le mors mobile 18 est libéré et sous l'action du système de rappel 19, il est mu en rotation autour de son axe x jusqu'en position ouverte.Advantageously, the movable arm 21 is provided with a return device 22 in a so-called bracing position in which an end 23 of the movable arm 21 is in contact with the movable jaw 18. In this bracing position, the movable jaw 18 is braced against the end 23 of the movable arm 21. When the movable arm 21 is in the bracing position, the movable jaw 18 is in the gripping position. The bracing has the advantage of blocking, locking the movable jaw 18 in the gripping position. Moreover, during the bracing effortless on the movable jaw 18 can, unless damage to the carriage 8, open the clamp 12. By cons, to open the clamp 12, simply act on the movable arm 21, so as to rotate it to a retracted position in which it is no longer in contact with the movable jaw 18. Then, the movable jaw 18 is released and under the action of the return system 19, it is rotated about its axis x to the open position.

Très avantageusement, le dispositif de rappel 22 agit sur le bras mobile 21 selon un effort plus grand qu'un effort du système de rappel 19 agissant sur le mors mobile 18. Ainsi, lorsque le bras mobile 21 n'est soumis à aucun autre effort que celui du dispositif de rappel 22, la pince 12 est en position de préhension.Very advantageously, the return device 22 acts on the movable arm 21 in a greater effort than a force of the return system 19 acting on the movable jaw 18. Thus, when the movable arm 21 is subjected to any other effort that of the return device 22, the clamp 12 is in the gripping position.

Selon une variante de réalisation, l'unité de verrouillage 20 comporte un verrou 24 solidaire du mors mobile 18. Ce verrou 24 présente très avantageusement un dégagement 25 adaptée pour recevoir l'extrémité 23 du bras mobile 21, lorsque le mors mobile 18 est en position de préhension.According to an alternative embodiment, the locking unit 20 comprises a latch 24 secured to the movable jaw 18. This latch 24 has very advantageously a clearance 25 adapted to receive the end 23 of the movable arm 21, when the movable jaw 18 is in position. gripping position.

Tel que cela apparaît sur les Fig. 3A et 3B , le bras mobile 21 comporte en outre un bras de libération 26 dont la fonction réside en ce qu'un utilisateur peut libérer la préhension du rouleau 13 par la pince 12.As it appears on the Fig . 3A and 3B , the movable arm 21 further comprises a release arm 26 whose function is that a user can release the gripping of the roll 13 by the clamp 12 .

Ainsi, grâce à ce nouveau chariot 8, l'invention offre l'avantage d'empêcher un soulèvement de la bâche par rapport à la chaîne 4, notamment lors de bourrasques de vent.Thus, thanks to this new carriage 8, the invention offers the advantage of preventing lifting of the cover relative to the chain 4, especially during wind squalls.

Selon une variante de réalisation illustrée à la Fig. 4 , le chariot 8 comporte une pince secondaire 12a dont le mors fixe est la butée 15. En outre, la pince secondaire 12a comprend un mors mobile secondaire 18a qui est adapté pour coopérer avec la butée 15 de manière à activer la préhension d'un rouleau 13. Le mors mobile secondaire 18a est typiquement mobile en rotation autour d'un axe x' par rapport au chariot, sensiblement parallèle à l'axe x, entre une position de préhension et une position ouverte.According to an embodiment variant illustrated in Fig . 4 , the carriage 8 comprises a secondary clamp 12a whose fixed jaw is the abutment 15. In addition, the secondary clamp 12a comprises a secondary movable jaw 18a which is adapted to cooperate with the abutment 15 so as to activate the gripping of a roller 13. The secondary movable jaw 18a is typically rotatable about an axis x ' with respect to the carriage, substantially parallel to the x-axis, between a gripping position and an open position.

Le mors mobile secondaire 18a est pourvu d'un système de rappel secondaire 19a, qui est adapté à rappeler le mors mobile secondaire 18a vers sa position ouverte. De plus, le chariot 8 est pourvu d'une unité de verrouillage secondaire 20a de la pince secondaire 12a. L'unité de verrouillage secondaire 20a comprend un bras mobile secondaire 21a en rotation autour d'un axe y' parallèle à l'axe y. The secondary movable jaw 18a is provided with a secondary return system 19a, which is adapted to return the secondary movable jaw 18a to its open position. In addition, the carriage 8 is provided with a secondary locking unit 20a of the secondary clamp 12a. The secondary locking unit 20a comprises a secondary movable arm 21a rotating about an axis y ' parallel to the y axis.

Le bras mobile secondaire 21a est pourvu d'un dispositif de rappel secondaire 22a vers une position d'arc-boutement d'une extrémité secondaire 23a du bras mobile secondaire 21a contre le mors mobile secondaire 18a. The secondary movable arm 21a is provided with a secondary biasing device 22a towards a bracing position of a secondary end 23a of the secondary movable arm 21a against the secondary movable jaw 18a.

L'arc-boutement entre le bras mobile secondaire 21a et le mors mobile secondaire 18a est de même principe que l'arc-boutement entre le bras mobile 21 et le mors mobile 21 décrit plus haut dans la description.The bracing between the secondary movable arm 21a and the secondary movable jaw 18a is of the same principle as the bracing between the movable arm 21 and the movable jaw 21 described above in the description.

En outre, le dispositif de rappel secondaire 22a agit sur le bras mobile secondaire 21a selon un effort plus grand qu'un effort du système de rappel secondaire 19a agissant sur le mors mobile secondaire 18a. Ainsi, de la même façon que pour l'autre pince 12, lorsqu'aucun autre effort que celui du dispositif de rappel secondaire 22a ne soumet le bras mobile secondaire 21a, la pince secondaire 12a est en position de préhension.In addition, the secondary return device 22a acts on the secondary movable arm 21a in a greater effort than a force of the secondary return system 19a acting on the secondary movable jaw 18a. Thus, in the same way as for the other clamp 12, when no other force than that of the secondary biasing device 22a submits the secondary movable arm 21a, the secondary clamp 12a is in the gripping position.

Selon une variante de réalisation de la pince secondaire 12a, l'unité de verrouillage secondaire 20a comporte un verrou secondaire 24a solidaire du mors mobile secondaire 18a. Le verrou secondaire 24a offre un dégagement secondaire 25a adapté pour recevoir l'extrémité secondaire 23a du bras mobile secondaire 21a. According to an alternative embodiment of the secondary clamp 12a, the secondary locking unit 20a comprises a secondary lock 24a integral with the secondary movable jaw 18a. The secondary lock 24a provides a secondary clearance 25a adapted to receive the secondary end 23a of the secondary movable arm 21a.

Selon la variante de réalisation représentée en Fig. 4 , la pince secondaire 12a et l'autre pince 12 sont disposées de telle sorte qu'une surface de contact 17b destinée au contact entre le mors fixe 17 et un rouleau 13, ainsi qu'une surface de contact 15b destinée au contact entre la butée 15 et un rouleau 13, se font faces. Ainsi, le mors mobile 18 et mors mobile secondaire 18a se trouvent disposés entre le mors fixe 17 et la butée 15. En conséquence, les éléments des pince 12 et pince secondaire 12a, tels que le bras mobile 21 et le bras mobile secondaire 21a se trouvent disposés tête-bêche.According to the embodiment variant represented in Fig. 4 , the secondary clamp 12a and the other clamp 12 are arranged such that a contact surface 17b for contact between the fixed jaw 17 and a roll 13, and a contact surface 15b for contact between the stop 15 and a roll 13, face each other. Thus, the movable jaw 18 and secondary movable jaw 18a are disposed between the fixed jaw 17 and the 15. As a result, the elements of the clamp 12 and secondary clamp 12a , such as the movable arm 21 and the secondary movable arm 21a are arranged head to tail.

Avantageusement, la disposition tête-bêche du bras mobile 21 et du bras mobile secondaire 21a permet de mettre les pince 12 et pince secondaire 12a en position de préhension simultanément.Advantageously, the head-to-tail arrangement of the movable arm 21 and the secondary movable arm 21a makes it possible to put the clamp 12 and the secondary clamp 12a in the gripping position simultaneously.

Selon une autre caractéristique avantageuse, l'installation 1 comporte en outre un système d'actionnement 27 de l'unité de verrouillage 20, notamment représenté aux Fig. 5A à 5G qui représentent des étapes d'accrochage d'un crochet 8 sur la chaine 4 lors du bâchage de la surface. Le système d'actionnement 27 permet soit de bloquer le chariot 8 sur la chaîne 4 lors de l'opération de bâchage de la surface, soit de débloquer le chariot 8 de la chaîne 4 lors du débâchage de la surface. Pour cela, le système d'actionnement 27 agit sur l'unité de verrouillage 20, soit pour verrouiller la pince 12 en préhension du rouleau 13 du maillon 5, soit pour libérer la pince 12 et donc l'ouvrir.According to another advantageous characteristic, the installation 1 further comprises an actuating system 27 of the locking unit 20, in particular shown in FIGS. Fig. 5A to 5G which represent hooking steps of a hook 8 on the chain 4 during the sheeting of the surface. The actuating system 27 makes it possible either to lock the carriage 8 on the chain 4 during the sheeting operation of the surface, or to unlock the carriage 8 of the chain 4 during the unstacking of the surface. For this, the actuating system 27 acts on the locking unit 20, either to lock the clamp 12 gripping the roller 13 of the link 5, or to release the clamp 12 and thus open it.

Selon une variante de réalisation, le système d'actionnement 27 comprend au moins une dent 28 aménagée sur les pignons 6 et adaptée pour agir sur l'unité de verrouillage 20, comme cela est décrit dans la suite de la description.According to an alternative embodiment, the actuating system 27 comprises at least one tooth 28 arranged on the pinions 6 and adapted to act on the locking unit 20, as described in the following description.

Par souci de simplification des représentations, la chaîne 4 est représentée aux Fig. 5A à 5G par trois maillons consécutifs 5a, 5b et 5c. Ces maillons 5a, 5b et 5c sont respectivement pourvus de rouleaux 13a, 13b et 13c. De plus, les doigts B du chariot 8 sont désignés B1 et B2 et appelés respectivement doigt-avant et doigt-arrière dans le sens de déplacement du chariot 8 pour le bâchage de la surface. De plus, le rail A comprend un rail dit « extérieur » A1 et un rail dit « intérieur » A2, intérieur et extérieur se comprenant par rapport à leurs distances respectives avec le pignon 6. Selon ce mode de réalisation, le pignon 6 comprend cinq dents 28, toutes adaptées pour agir sur l'unité de verrouillage 20. For the sake of simplification of the representations, the chain 4 is represented in Fig. 5A to 5G by three consecutive links 5a , 5b and 5c . These links 5a , 5b and 5c are respectively provided with rollers 13a , 13b and 13c. In addition, the fingers B of the carriage 8 are designated B1 and B2 and respectively called finger-front and back-finger in the direction of movement of the carriage 8 for the covering of the surface. In addition, the rail A comprises a so-called "outside" rail A1 and a rail called "inside" A2 , inside and outside being understood with respect to their respective distances with the pinion 6. According to this embodiment, the pinion 6 comprises five teeth 28, all adapted to act on the locking unit 20.

La Fig. 5A présente une position dans laquelle le chariot 8 est séparé de la chaîne 4. Dans cette position, les doigts avant B1 et arrière B2 du chariot 8 sont guidés par les rails extérieur A1 et intérieur A2 de telle sorte que le chariot 8 se trouve dégagé vis-à-vis de la chaine 4. En conséquence, comme le chariot 8 est déporté par rapport au pignon 6, l'unité de verrouillage 20 et de ce fait le bras mobile 21 sont libres.The Fig. 5A has a position in which the carriage 8 is separated from the chain 4. In this position, the front fingers B1 and rear B2 of the trolley 8 are guided by the outer A1 and inner A2 rails so that the carriage 8 is disengaged vis-à-vis the chain 4. Accordingly, as the carriage 8 is offset relative to the pinion 6, the unit 20 and thus the movable arm 21 are free.

Entre la Fig. 5A et la Fig. 5B le rouleau 13a qui coopère avec le pignon 6 est entraîné en rotation dans le sens de sortie de la chaîne 4 tandis que le rouleau 13b vient coopérer avec le pignon 6. La translation de la chaîne 4 et par suite de la poutre de tête 2 conduit à exercer par l'intermédiaire de la bâche 3, un effort de traction sur le chariot 8 conduisant à le faire sortir du magasin M. Par ailleurs, les doigts avant B1 et arrière B2 du chariot 8 coopèrent avec le rail extérieur A1 de manière à rapprocher le chariot 8 de la chaine 4. Enter here Fig. 5A and the Fig. 5B the roller 13a which cooperates with the pinion 6 is rotated in the output direction of the chain 4 while the roller 13b cooperates with the pinion 6. The translation of the chain 4 and as a result of the head beam 2 leads to exert through the tarpaulin 3, a tensile force on the carriage 8 leading to the out of the store M. Moreover, the front fingers B1 and rear B2 of the carriage 8 cooperate with the outer rail A1 so as to bring the carriage 8 closer to the chain 4.

Ainsi, à la Fig. 5B , le chariot 8 se trouve suffisamment proche de la chaine 4 pour que la butée 15 du chariot 8 intercepte ou accroche le rouleau 13b du maillon 5b de telle sorte qu'ensuite, le chariot 8 est entraîné par la chaîne 4 lors de la rotation du pignon 6 dans le sens de bâchage de la surface. Dans cette position, le doigt avant B1 n'est pas nécessairement en contact avec le rail extérieur A1 tandis que le doigt-arrière B2 est en contact avec le rail extérieur A1. Dans une telle configuration, la butée 15 est bloquée contre le rouleau 13b du maillon 5b. So, at the Fig. 5B , the carriage 8 is sufficiently close to the chain 4 so that the stop 15 of the carriage 8 intercepts or hooks the roll 13b of the link 5b so that, subsequently, the carriage 8 is driven by the chain 4 during the rotation of the pinion 6 in the direction of covering the surface. In this position, the front finger B1 is not necessarily in contact with the outer rail A1 while the rear finger B2 is in contact with the outer rail A1. In such a configuration, the stop 15 is locked against the roller 13b of the link 5b.

A la Fig. 5C , le chariot 8 entraîné par la chaîne voit une dent 28 du pignon 6 s'approche de l'unité de verrouillage 20. Ainsi, lorsque le chariot 8 poursuit sa sortie sous l'action du rouleau 13b tel que représenté à la Fig. 5D , la dent 28 vient en contact avec l'unité de verrouillage 20, en particulier avec le bras mobile 21. To the Fig. 5C , the carriage 8 driven by the chain sees a tooth 28 of the pinion 6 approaches the locking unit 20. Thus, when the carriage 8 continues its output under the action of the roller 13b as shown in FIG. Fig. 5D , The tooth 28 comes into contact with the locking unit 20, in particular with the movable arm 21.

La dent 28 déplace ainsi le bras mobile 21 vers sa position escamotée. En conséquence, la pince 12 s'ouvre, de telle sorte que le rouleau 13c peut pénétrer dans l'ouverture de la pince 12. Le doigt avant B1 se trouve en contact avec le rail extérieur A1, de manière à plaquer la butée 15 contre le rouleau 13b du maillon 5b ainsi qu'à pousser la pince 12 vers le rouleau 13c du maillon 5c.The tooth 28 thus moves the movable arm 21 towards its retracted position. As a result, the clamp 12 opens, so that the roll 13c can enter the opening of the clamp 12. The front finger B1 is in contact with the outer rail A1, so as to press the stop 15 against the roll 13b of the link 5b and push the clamp 12 to the roller 13c of the link 5c .

A la Fig. 5E , le contact entre la dent 28 et le bras mobile 21 est tel que le bras mobile 21 est déplacé en sa position escamotée. En conséquence de quoi, la pince 12 est ouverte, laissant le rouleau 13c pénétrer dans l'ouverture de la pince 12. To the Fig. 5E , the contact between the tooth 28 and the movable arm 21 is such that the movable arm 21 is moved to its retracted position. As a result, the clamp 12 is opened, allowing the roll 13c to enter the opening of the clamp 12.

Tel que cela apparaît à la Fig. 5F , comme l'entrainement du chariot 8 par la chaîne 4 se poursuit et comme le pignon 6 continue de tourner sur son axe, le contact entre la dent 28 et le bras mobile 21 est tel, que le bras mobile 21 se déplace de sa positon escamotée vers la position d'arc-boutement. De plus, comme le doigt-arrière B2 est en contact avec le rail extérieur A1, il plaque la pince 12 contre le rouleau 13c du maillon 5c. Ainsi, lors du déplacement du bras mobile 21 de sa position escamotée vers la position d'arc-boutement, l'extrémité 23 du bras mobile 21 pénètre dans le dégagement 25 du verrou 24. Ainsi, le mors mobile 18 se déplace vers sa position de préhension du rouleau 13c, c'est-à-dire que la pince 12 se referme sur le rouleau 13c du maillon 5c.As it appears in Fig. 5F , as the drive of the carriage 8 by the chain 4 continues and as the pinion 6 continues to rotate on its axis, the contact between the tooth 28 and the movable arm 21 is such that the movable arm 21 moves from its position retracted to the bracing position. In addition, as the rear finger B2 is in contact with the outer rail A1 , it plates the clamp 12 against the roller 13c of the link 5c . Thus, during the displacement of the movable arm 21 from its retracted position to the bracing position, the end 23 of the movable arm 21 enters the clearance 25 of the latch 24. Thus, the movable jaw 18 moves towards its position gripping the roll 13c, that is to say that the clamp 12 is closed on the roll 13c of the link 5c .

De plus, la queue 16 vient en contact avec le rouleau 13a, ce qui a pour effet de faire basculer le chariot 8 autour du rouleau 13b autour duquel la butée 15 est accrochée. Ceci a pour effet de faire pénétrer le rouleau 13c dans la pince 12. In addition, the tail 16 comes into contact with the roller 13a , which has the effect of tilting the carriage 8 around the roller 13b around which the stopper 15 is hooked. This has the effect of making the roll 13c penetrate into the clamp 12.

A la Fig. 5G , le contact entre la dent 28 et le bras mobile 21 est rompu, c'est la raison pour laquelle, ledit bras 21 se trouve en position d'arc-boutement. Dans cette position d'arc-boutement, le bras mobile 21 appuie sous l'action du système de rappel 22 sur le verrou 24. Par conséquent, le mors mobile 18 est en position de préhension sur le rouleau 13c du maillon 5c, avec le mors fixe 17. Ensuite, lors de la poursuite de la sortie de la chaîne 4, le chariot est donc bloqué sur la chaîne 4 et empêche le soulèvement de la bâche par rapport à la chaîne 4. To the Fig. 5G , the contact between the tooth 28 and the movable arm 21 is broken, that is why, said arm 21 is in the bracing position. In this bracing position, the movable arm 21 presses under the action of the return system 22 on the latch 24. Consequently, the movable jaw 18 is in the gripping position on the roll 13c of the link 5c , with the fixed jaw 17. Then, during the continuation of the output of the chain 4, the carriage is blocked on the chain 4 and prevents the lifting of the sheet relative to the chain 4.

Le système d'actionnement 27 et le système de désolidarisation 9 permettent réciproquement de débloquer le chariot 8 de la chaîne 4 lors de l'opération de débâchage. Pour cela, il suffit d'adapter le raisonnement utilisé pour décrire les Fig. 5A à 5G en sens inverse, c'est-à-dire de 5G à 5A.The actuating system 27 and the uncoupling system 9 allow each other to unlock the carriage 8 of the chain 4 during the uncoupling operation. For that, it is enough to adapt the reasoning used to describe the Fig. 5A to 5G in the opposite direction, that is to say from 5G to 5A .

La mise en oeuvre du chariot 8 comportant la pince 12 et la pince secondaire 12a est une adaptation de la mise en oeuvre du chariot 8 comportant la pince 12, la butée 15 et la queue 16. The implementation of the carriage 8 comprising the clamp 12 and the secondary clamp 12a is an adaptation of the implementation of the carriage 8 comprising the clamp 12, the stop 15 and the tail 16.

La différence consiste en ce que l'action de ladite queue 16, faisant basculer le chariot 8 autour du rouleau 13b, est remplacée par la préhension dudit rouleau 13b par la pince secondaire 12a. The difference is that the action of said shank 16, tilting the carriage 8 around the roll 13b, is replaced by the gripping of said roll 13b by the secondary clamp 12a.

De plus, l'effet de placage du rail extérieur A1 sur le doigt avant B1, plaquant ainsi les pince 12 et pince secondaire 12a contre leurs rouleaux 13 respectifs, permet d'assurer la préhension des rouleaux par les pinces.In addition, the effect of plating the outer rail A1 on the front finger B1, thereby plating the clamp 12 and secondary clamp 12a against their respective rollers 13 , ensures the gripping of the rollers by the clamps.

Le chariot 8 comportant les deux pinces contribue donc à la résolution du problème technique en améliorant la solidarisation de la bâche 3 par rapport à la chaîne 4 au niveau du magasin M lors du bâchage de la surface.The carriage 8 comprising the two clamps thus contributes to the resolution of the technical problem by improving the fastening of the cover 3 relative to the chain 4 at the store M when sheeting the surface.

Réciproquement, ce chariot 8 améliore la désolidarisation de la bâche 3 par rapport à la chaîne 4 lors du débâchage, vis-à-vis de l'art antérieur.Conversely, this carriage 8 improves the separation of the cover 3 with respect to the chain 4 during unstacking, vis-à-vis the prior art.

Une autre caractéristique de l'invention est présentée à la Fig. 6 . Selon cette caractéristique, au moins un maillon 5 de la chaîne 4 est pourvu d'une roulette 29, qui dépasse suffisamment du maillon 5 pour pouvoir venir en contact avec le sol entourant la surface. Ainsi, cette roulette 29 permet avantageusement de rendre la chaîne 4 autoportante. Préférentiellement, cette roulette 29 est portée par un maillon sur cinq. Tel que cela apparait plus précisément aux Fig. 6A à 6E , la roulette 29 est avantageusement montée sur un arbre de roulette 30 qui est fixé sur le maillon 5 et qui s'étend selon un axe sensiblement parallèle à la direction d selon laquelle s'étend le rouleau 13 du maillon 5. Another feature of the invention is presented at Fig. 6 . According to this feature, at least one link 5 of the chain 4 is provided with a wheel 29, which sufficiently exceeds the link 5 to be in contact with the ground surrounding the surface. Thus, the wheel 29 advantageously makes it possible to make the chain 4 freestanding. Preferably, this wheel 29 is carried by one link in five. As it appears more specifically to Fig. 6A to 6E , the wheel 29 is advantageously mounted on a roller shaft 30 which is fixed on the link 5 and which extends along an axis substantially parallel to the direction d along which the roller 13 of the link 5 extends .

Selon un exemple de réalisation particulièrement avantageux, le maillon 5 est muni d'un dispositif de réglage angulaire 31 pour faire varier, dans le plan de la surface, la direction de translation de la chaîne 4, en faisant varier un débattement angulaire de l'arbre de roulette 30 par rapport au maillon 5. Tel que cela apparait plus précisément sur les Figures, une variante de réalisation consiste à mouler le corps du maillon 32 de telle manière qu'il comprenne deux plaques latérales 33 reliées entre elles par une partie tubulaire 34. Les plaques latérales 33, à une extrémité comportent une chape et, à l'extrémité opposée au niveau de la partie tubulaire 34 un évidement 35, destiné à recevoir une chape d'un maillon consécutif.According to a particularly advantageous embodiment, the link 5 is provided with an angular adjustment device 31 for varying, in the plane of the surface, the direction of translation of the chain 4, by varying an angular displacement of the roulette tree 30 relative to the link 5. As it appears more precisely in the Figures, an alternative embodiment consists in molding the body of the link 32 in such a way that it comprises two side plates 33 interconnected by a tubular portion 34. The side plates 33 at one end comprise a clevis and, at the opposite end at the level of the tubular portion 34 a recess 35, intended to receive a clevis of a consecutive link.

De plus, les plaques latérales 33 sont pourvues au niveau de la chape, de trous traversants 39 de diamètres sensiblement identiques à un diamètre interne de la partie tubulaire 34. In addition, the side plates 33 are provided at the level of the yoke, through holes 39 of diameters substantially identical to an internal diameter of the tubular portion 34.

Le maillon 5 comporte en outre un rivet 36 comprenant une partie mâle 37 et une partie femelle 38 et s'étendant selon la direction d. Ce rivet 36 permet de lier deux maillons successifs tout en leur laissant un degré de liberté en rotation autour de la direction d. La partie femelle 38 et la partie mâle 37 comportent des extrémités de fxation complémentaires de manière à pouvoir se fixer l'une dans l'autre.The link 5 further comprises a rivet 36 comprising a male portion 37 and a female portion 38 and extending in the direction d. This rivet 36 links two successive links while leaving a degree of freedom in rotation around the direction d. The female portion 38 and the male portion 37 have complementary attachment ends so that they can be attached to each other.

Ainsi, deux maillons 5 successifs s'emboitent l'un à l'autre par engagement des chapes d'un maillon dans les logements d'un autre maillon, de telle sorte que les trous traversants 39 se trouvent en vis-à-vis de la partie tubulaire 34. Alors, les parties mâle 37 et femelle 38 du rivet 36 sont insérées dans les trous traversants 39 et la partie tubulaire 34 jusqu'à ce qu'elles se fixent l'une dans l'autre.Thus, two successive links 5 fit into each other by engagement of the clevises of one link in the housing of another link, so that the through holes 39 are vis-à-vis the tubular portion 34. Then, the male 37 and female 38 of the rivet 36 are inserted into the through holes 39 and the tubular portion 34 until they are fixed in one another.

Les dimensions des trous traversants 39, de la partie tubulaire 34 et du rivet 36 permettent la rotation des deux maillons successifs autour du rivet 36. Bien entendu, les parties mâle 37 et femelle 38 sont pourvues à leurs extrémités libres de protubérances d'arrêt 40, destinées à maintenir la liaison entre les deux maillons successifs.The dimensions of the through holes 39, the tubular portion 34 and the rivet 36 allow the rotation of the two successive links around the rivet 36. Of course, the male 37 and female 38 are provided at their free ends with stop protrusions 40 , intended to maintain the link between the two successive links.

Selon une caractéristique particulièrement avantageuse, le dispositif de réglage angulaire 31 comprend deux ouvertures 41, 42 dans les plaques latérales 33 dans lesquelles l'arbre de roulette 30 est inséré, ledit arbre de roulette 30 et une rondelle cannelée de réglage angulaire 43 du débattement de l'arbre de roulette 30. According to a particularly advantageous characteristic, the angular adjustment device 31 comprises two openings 41, 42 in the lateral plates 33 in which the roller shaft 30 is inserted, said roller shaft 30 and a fluted angular adjustment washer 43 of the deflection. the roulette tree 30.

Selon l'invention, une première ouverture 41 et une première extrémité 44 de l'arbre de roulette 30 comportent des formes complémentaires de manière à favoriser un déplacement dans un plan sensiblement horizontal de l'arbre de roulette 30 par rapport au maillon 5. According to the invention, a first opening 41 and a first end 44 of the roller shaft 30 comprise complementary shapes so as to promote a displacement in a substantially horizontal plane of the roller shaft 30 with respect to the link 5.

La rondelle cannelée 43 est montée pivotante sur une deuxième extrémité 45 de l'arbre de roulette 30. De plus, une deuxième ouverture 42 consistant en un trou oblong dont les parois planes sont parallèles au plan de la surface lorsque la surface est bâchée, est entourée d'une gorge 46 de forme elliptique ou ovoïdale, la rondelle cannelée 43 étant pourvue d'un doigt 47 adapté pour être déplacé dans la gorge 46 de manière à ce que l'inclinaison de l'arbre de roulette 30 dans le plan horizontal varie. Ainsi, en fonction de la position du doigt 47 dans la gorge 46, la deuxième extrémité 45 de l'arbre de roulette 30 est déportée dans le trou oblong de la deuxième ouverture 42. Selon un exemple de réalisation particulièrement avantageux, la première extrémité 44 de l'arbre de roulette 30 est pourvue d'un épaulement 48, lui-même pourvu d'un méplat 49 pendant que la première ouverture 41 consiste en un trou oblong complémentaire, admettant toutefois un jeu mécanique pour permettre la variation de l'inclinaison de l'arbre de roulette 30 dans le plan horizontal. Selon une variante préférée de réalisation de l'invention, la gorge 46 et la rondelle cannelée 43 coopèrent de manière à permettre un débattement angulaire de l'arbre de roulette 30 jusqu'à 5° autour d'une position médiane selon un axe z, sensiblement parallèle à l'axe d. Selon une variante davantage préférée de réalisation de l'invention, la gorge 46 et la rondelle cannelée 43 coopèrent de manière à permettre un débattement angulaire de l'arbre de roulette 30 jusqu'à 2° autour de la position médiane selon l'axe z. Selon une variante encore davantage préférée de réalisation de l'invention, la gorge 46 et la rondelle cannelée 43 coopèrent de manière à permettre un débattement angulaire de l'arbre de roulette 30 jusqu'à 1° autour de la position médiane selon l'axe z. The fluted washer 43 is pivotally mounted on a second end 45 of the roller shaft 30. In addition, a second opening 42 consisting of an oblong hole whose plane walls are parallel to the plane of the surface when the surface is covered, is surrounded by a groove 46 of elliptical or ovoidal shape, the fluted washer 43 being provided with a finger 47 adapted to be moved in the groove 46 so that the inclination of the roller shaft 30 in the horizontal plane varied. Thus, depending on the position of the finger 47 in the groove 46, the second end 45 of the roller shaft 30 is offset in the oblong hole of the second opening 42. According to a particularly advantageous embodiment, the first end 44 of the roller shaft 30 is provided with a shoulder 48, itself provided with a flat 49 while the first opening 41 consists of a complementary oblong hole, admitting however a mechanical play to allow the variation of the inclination of the roulette shaft 30 in the horizontal plane. According to a preferred embodiment of the invention, the groove 46 and the fluted washer 43 cooperate to allow an angular displacement of the roller shaft 30 to 5 ° around a median position along an axis z , substantially parallel to the axis d. According to a more preferred embodiment of the invention, the groove 46 and the fluted washer 43 cooperate to allow an angular displacement of the roller shaft 30 to 2 ° around the central position along the z axis . According to an even more preferred embodiment of the invention, the groove 46 and the fluted washer 43 cooperate to allow an angular displacement of the roller shaft 30 to 1 ° around the central position along the axis z.

Lorsqu'un maillon 5 sur cinq est pourvu d'une roulette 30, alors l'installation 1 selon l'invention comporte des pignons 6 adaptés pour déplacer ledit maillon 5. Un exemple de réalisation d'un tel pignon 6 est représenté à la Fig. 7 . Ce pignon comporte cinq dents dont l'une dite dent creuse 50 est adaptée pour déplacer les maillons 5 de la chaîne 4 tout en ménageant un espace pour recevoir la roulette 29. Selon une variante de réalisation, la dent creuse 50 comporte au moins deux butées, une butée dite de bâchage 51 et une butée dite de débâchage 52. When one link 5 out of five is provided with a wheel 30, then the installation 1 according to the invention comprises pinions 6 adapted to move said link 5. An embodiment of such a pinion 6 is shown in FIG. Fig . 7 . This pinion comprises five teeth, one of which is said hollow tooth 50 is adapted to move the links 5 of the chain 4 while leaving a space to receive the wheel 29. According to a variant of embodiment, the hollow tooth 50 comprises at least two abutments, a so-called covering stop 51 and a so-called clearing abutment 52.

Les butées de bâchage 51 et de débâchage 52 permettent respectivement d'agir sur les maillons 5 lors du bâchage de la surface ou lors débâchage de la surface. La dent creuse 50 comporte entre les butées de bâchage 51 et de débâchage 52 un évidement 53 de matière adapté pour recevoir la roulette 29. The sheeting stops 51 and débhachage 52 respectively allow to act on the links 5 during the sheeting of the surface or when uncovering the surface. The hollow tooth 50 has between the stops of the covering 51 and unstitching 52 a recess 53 of material adapted to receive the wheel 29.

Selon un exemple de réalisation notamment représenté à la Fig. 7 , la dent creuse 50 consiste en deux ailes 54 formant les butées 51 et 52 et entre lesquelles est laissé libre un espace formant évidement 53, les ailes 54 étant, en liaison encastrement, fixées sur le pignon 6.According to an embodiment example represented in particular Fig. 7 , the hollow tooth 50 consists of two wings 54 forming the abutments 51 and 52 and between which is left free a recess space 53, the wings 54 being, in fixed connection, fixed on the pinion 6 .

L'avantage offert par la roulette 29 est celui de contribuer à la résolution du problème technique, en ce sens qu'elle permet d'augmenter la stabilité de l'installation 1. En effet, il est fréquent de constater que le sol périphérique à la surface d'une piscine est légèrement en dévers. Ainsi, la roulette 29 permet de contrecarrer les effets du dévers lors du bâchage de la surface.The advantage offered by the wheel 29 is that of contributing to the resolution of the technical problem, in that it makes it possible to increase the stability of the installation 1. In fact, it is common to note that the peripheral ground at the surface of a pool is slightly overhanging. Thus, the wheel 29 can counteract the effects of the cant during the sheeting of the surface.

La Fig. 8 représente d'autres caractéristiques particulièrement avantageuses de l'invention.The Fig. 8 represents other particularly advantageous features of the invention.

En effet, afin d'améliorer la stabilité de l'installation 1, l'invention propose que la poutre de tête 2 et les traverses 10 soient des profilés creux, typiquement en aluminium. Les profilés creux en aluminium présentent l'avantage d'être plus résistants et plus légers que des pièces pleines aux mêmes dimensions, résistant s'entendant en flexion. Alors les potences 11 sont enfilées dans les traverses en vue de leur fixation, ce qui offre une simplification particulièrement avantageuse de la mise en oeuvre de l'installation 1. Très avantageusement, la poutre de tête 2 comprend une traverse 10 et, de part et d'autre de la traverse 10, une potence 11. Aussi, il est connu de relier deux traverses 10 successives par une sangle 55. Toutefois, l'invention propose de fournir des traverses 10 pourvues de gorges latérales de liaison 56 et des sangles 55 pourvues d'extrémités cylindriques 57 à insérer dans le gorges latérales de liaison 56. La combinaison des extrémités cylindriques 57 et des gorges latérales de liaison 56 offre l'avantage de ne pas nécessiter la fixation des sangles 55 en mettant en oeuvre des systèmes de vis, ce qui améliore la fiabilité de l'installation 1.Indeed, to improve the stability of the installation 1, the invention proposes that the head beam 2 and the cross members 10 are hollow profiles, typically aluminum. The hollow aluminum profiles have the advantage of being stronger and lighter than solid parts with the same dimensions, resistant in bending. Then the brackets 11 are threaded into the crosspieces for attachment, which offers a particularly advantageous simplification of the implementation of the installation 1. Very advantageously, the head beam 2 comprises a cross member 10 and, on the other hand, Another of the crossbar 10, a bracket 11. Also, it is known to connect two successive crosspieces 10 by a strap 55. However, the invention proposes to provide crosspieces 10 provided with connecting side grooves 56 and straps 55 provided with cylindrical ends 57 to be inserted into the lateral connecting grooves 56. The combination of the cylindrical ends 57 and the lateral connecting grooves 56 offers the advantage of not requiring the fastening of the straps 55 by implementing screw systems, which improves the reliability of the installation 1 .

Tel que cela apparaît tout particulièrement à la Fig. 8 , la poutre de tête 2 comporte très avantageusement une gorge 58 transversale s'étendant tout le long de la traverse 10 pendant que la bâche est pourvue d'un bourrelet cylindrique transversal 59 destiné à être inséré dans la gorge transversale 58. La combinaison de la gorge transversale 58 et du bourrelet transversal 59 permet une répartition de tout effort de tension entre la bâche 3 et la poutre de tête 2. De plus, la combinaison améliore une étanchéité entre ladite bâche 3 et ladite poutre de tête 2. As it appears particularly in the Fig. 8 , the head beam 2 has very advantageously a transverse groove 58 extending all the way through the crossmember 10 while the sheet is provided with a transverse cylindrical bead 59 intended to be inserted into the transverse groove 58. The combination of the transverse groove 58 and transverse bead 59 allows a distribution of any tensioning force between the sheet 3 and the head beam 2. In addition, the combination improves a seal between said sheet 3 and said head beam 2.

Afin d'améliorer encore cette dernière étanchéité, selon une variante de réalisation, un capot 60 est fixé sur la poutre de tête 2 de manière à recouvrir le bourrelet de la bâche 3 tout le long de la traverse 10 de ladite poutre de tête 2. To further improve this last seal, according to an alternative embodiment, a cap 60 is fixed on the head beam 2 so as to cover the bead of the sheet 3 all along the cross member 10 of said head beam 2.

L'invention n'est pas limitée aux exemples décrits et représentés car diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the examples described and shown because various modifications can be made without departing from its scope.

Claims (8)

Installation (1) pour bâcher et débâcher une surface, comportant : - une bâche (3) montée au moins sur une poutre de tête (2), - de part et d'autre de la bâche (3), une chaîne (4) de maillons (5) rigide en poussée, commandée en translation et comportant une extrémité reliée à la poutre de tête (2), pour déplacer la bâche (3) entre un magasin (M) de réception de la bâche (3) en position débâchée et une position de bâchage de la surface, - deux pignons (6) coaxiaux, liés en rotation par un arbre de liaison et comportant des dents (28) adaptées aux maillons (5) des chaînes (4) pour commander la translation des chaînes (4) selon un premier sens dit de bâchage pour bâcher la surface, et selon un second sens contraire au premier, dit de débâchage pour débâcher la surface, - une série de chariots (8) assurant une liaison temporaire entre la bâche (3) et les chaînes (4), et destinés à être répartis le long de la bâche (3) en position de bâchage de la surface, et - au niveau du magasin (M), un système de désolidarisation (9) de la bâche (3) par rapport à la chaîne (4) dans le sens de débâchage, pour un rangement et un escamotage de la bâche par rapport à la chaîne, et de solidarisation de la bâche (3) par rapport à la chaîne (4) dans le sens de bâchage, caractérisée : - en ce que chaque chariot (8) comporte au moins une pince (12) adaptée pour la préhension temporaire d'un rouleau (13) d'un maillon (5) de la chaîne (4) et une unité de verrouillage (14) de la préhension de la pince (12) relativement à la chaîne (4) de manière à empêcher un soulèvement de la bâche (3) par rapport à la chaîne (4), et - en ce que l'installation comprend un système d'actionnement (27) de l'unité de verrouillage (14) au niveau du magasin pour bloquer le chariot (8) sur la chaîne (4) dans le sens de bâchage et pour débloquer le chariot (8) de la chaîne (4) dans le sens de débâchage. Installation (1) for covering and removing a surface, comprising: a cover (3) mounted on at least one head beam (2), - On either side of the sheet (3), a chain (4) of links (5) rigid in thrust, controlled in translation and having an end connected to the head beam (2), to move the tarpaulin ( 3) between a magazine (M) for receiving the tarpaulin (3) in the released position and a position for covering the surface, - Two coaxial pinions (6) , rotatably connected by a connecting shaft and having teeth (28) adapted to the links (5) of the chains (4) for controlling the translation of the chains (4) in a first meaning said tarpaulin to cover the surface, and in a second direction opposite to the first, said débhachage to unclog the surface, - a series of carriages (8) providing a temporary connection between the cover (3) and the chains (4), and intended to be distributed along the cover (3) in the covering position of the surface, and - At the store (M), a system of separation (9) of the cover (3) relative to the chain (4) in the uncoupling direction, for storage and retraction of the cover relative to the chain and securing the cover (3) with respect to the chain (4) in the direction of covering, characterized in that each carriage (8) comprises at least one clamp (12) adapted for the temporary gripping of a roll (13) of a link (5) of the chain (4) and a locking unit (14) gripping the clamp (12) relative to the chain (4) so as to prevent lifting of the cover (3) from the chain (4), and - in that the installation comprises an actuating system (27) of the locking unit (14) at the store to lock the carriage (8) on the chain (4) in the direction of tarpaulin and to unlock the carriage (8) of the chain (4) in the uncoupling direction. Installation (1) selon la revendication 1, caractérisée en ce que la pince (12) comprend un mors fixe (17) et un mors mobile (18) en rotation par rapport au chariot (8) entre une position de préhension du rouleau (13) d'un maillon et une position ouverte, le mors mobile (18) étant pourvu d'un système de rappel (19) en position ouverte, et l'unité de verrouillage (14) comprend un bras mobile (20) en rotation par rapport au chariot (8) entre une position dite d'arc-boutement dans laquelle le mors mobile (18) se trouve arc-bouté contre une extrémité (23) du bras mobile (20) maintenant ainsi la pince (12) en position de préhension et une position escamotée pour libérer le mors mobile (18), le bras mobile (20) étant pourvu d'un dispositif de rappel (22) en position d'arc-boutement.Installation (1) according to claim 1, characterized in that the clamp (12) comprises a fixed jaw (17) and a movable jaw (18) rotated relative to the carriage (8) between a gripping position of the roller (13). ) of a link and an open position, the movable jaw (18) being provided with a return system (19) in the open position, and the locking unit (14) comprises a movable arm (20) rotated by relative to the carriage (8) between a so-called bracing position in which the movable jaw (18) is braced against one end (23) of the movable arm (20) thus holding the clamp (12) in position gripping and a retracted position to release the movable jaw (18), the movable arm (20) being provided with a return device (22) in the bracing position. Installation (1) selon la revendication 2, caractérisée en ce que l'unité de verrouillage (14) comporte un verrou (24) solidaire du mors mobile (18), et présentant un dégagement (25) adapté pour recevoir, lorsque le mors mobile (18) est en position de préhension, l'extrémité (23) du bras mobile (20), qui exerce une poussée de blocage sur ledit verrou (24). Installation (1) according to claim 2, characterized in that the locking unit (14) comprises a latch (24) integral with the movable jaw (18), and having a recess (25) adapted to receive, when the movable jaw (18) is in the gripping position, the end (23) of the movable arm (20), which exerts a locking thrust on said latch (24). Installation (1) selon l'une des revendications 1 à 3, caractérisée en ce que le système d'actionnement (27) comprend l'unité de verrouillage (14) et les pignons (6) qui comprennent au moins une dent (28) adaptée pour agir sur l'unité de verrouillage (14) de telle sorte que lorsque la chaîne (4) est déplacée selon le sens de bâchage et qu'un chariot (8) est positionné sur elle (4), alors la pince (12) se ferme sur un rouleau (13) d'un maillon (5) afin de bloquer le chariot (8) sur la chaîne (4) et lorsque la chaîne (4) est déplacée selon le sens de débâchage et lorsqu'un chariot (8) est déplacé au niveau du pignon (6) alors la dent (28) agit sur l'unité de verrouillage (14) en actionnant l'ouverture de la pince (12) afin de débloquer le chariot (8) de la chaîne (4). Installation (1) according to one of claims 1 to 3, characterized in that the actuating system (27) comprises the locking unit (14) and the pinions (6) which comprise at least one tooth (28) adapted to act on the locking unit (14) so that when the chain (4) is moved in the direction of sheeting and a carriage (8) is positioned on it (4), then the clamp (12) ) closes on a roller (13) of a link (5) in order to lock the carriage (8) on the chain (4) and when the chain (4) is moved in the uncoupling direction and when a carriage (4) 8) is moved at the pinion (6) then the tooth (28) acts on the locking unit ( 14 ) by actuating the opening of the clamp (12) to unlock the carriage (8) of the chain ( 4). Installation (1) selon l'une des revendications 1 à 4, caractérisée en ce que au moins un maillon (5) de la chaîne (4) est pourvu d'une roulette (29) au moyen de laquelle, la chaîne (4) prend appui sur le sol, la roulette (29) étant montée sur un axe sensiblement horizontal et muni d'un dispositif de réglage angulaire (43) pour faire varier dans le plan de la surface la direction de la translation de la chaîne (4). Installation (1) according to one of claims 1 to 4, characterized in that at least one link (5) of the chain (4) is provided with a wheel (29) by means of which the chain (4) bears on the ground, the wheel (29) being mounted on a substantially horizontal axis and provided with a angular adjustment device (43) for varying in the plane of the surface the direction of translation of the chain (4). Installation (1) selon l'une des revendications précédentes, caractérisée en ce que les chariots (8) sont portés deux à deux par une transverse (10) s'étendant parallèlement à la poutre de tête (2) et constituée d'un profilé creux et de deux potences (11), les potences (11) étant enfilées dans le profilé creux à ses extrémités et prenant appui sur un chariot (8) respectivement.Installation (1) according to one of the preceding claims, characterized in that the carriages (8) are carried two by two by a transverse (10) extending parallel to the head beam (2) and consisting of a profile hollow and two brackets (11), the brackets (11) being slipped into the hollow section at its ends and supported on a carriage (8) respectively. Installation (1) selon la revendication 6, caractérisée en ce que deux traverses (10) successives sont reliées entre elles par au moins une sangle (55), pourvue d'extrémités (57) cylindriques, les traverses (10) étant pourvues de gorges (56) adaptées à recevoir lesdites extrémités cylindriques (57). Installation (1) according to claim 6, characterized in that two crosspieces (10) successive are interconnected by at least one strap (55) provided with ends (57) cylindrical, the crosspieces ( 10 ) being provided with grooves (56) adapted to receive said cylindrical ends (57). Installation (1) selon l'une des revendications précédentes, caractérisée en ce que la bâche (3) est pourvue d'un bourrelet cylindrique (59) transversal et en ce que la poutre de tête (2) comprend un profilé creux pourvu d'une gorge transversale (58) adaptée pour recevoir le bourrelet cylindrique (59), un capot (60) recouvrant le bourrelet (59) de la bâche (3). Installation ( 1 ) according to one of the preceding claims, characterized in that the cover (3) is provided with a transverse cylindrical bead (59) and in that the head beam (2) comprises a hollow profile provided with a transverse groove (58) adapted to receive the cylindrical bead (59), a cover (60) covering the bead (59) of the cover (3).
EP15176928.8A 2014-07-18 2015-07-15 Einrichtung zum zudecken und abdecken einer fläche Not-in-force EP2975197B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1456965A FR3023864B1 (en) 2014-07-18 2014-07-18 TROLLEY WITH HOOK

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EP2975197B1 EP2975197B1 (en) 2017-03-01

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634981A1 (en) 1992-04-01 1995-01-25 Michel Mahaut Retractable device for raising and lowering a cover over a two or three dimensional space
FR2778426A1 (en) * 1998-05-07 1999-11-12 Mafca Ind Canvas cover frame for railway wagon with retractable support arches
WO2014072638A1 (en) * 2012-11-12 2014-05-15 Ec2M Telescopic installation for storing a cover element inside a pit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634981A1 (en) 1992-04-01 1995-01-25 Michel Mahaut Retractable device for raising and lowering a cover over a two or three dimensional space
FR2778426A1 (en) * 1998-05-07 1999-11-12 Mafca Ind Canvas cover frame for railway wagon with retractable support arches
WO2014072638A1 (en) * 2012-11-12 2014-05-15 Ec2M Telescopic installation for storing a cover element inside a pit

Also Published As

Publication number Publication date
FR3023864B1 (en) 2016-08-05
FR3023864A1 (en) 2016-01-22
EP2975197B1 (en) 2017-03-01

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