EP3521533B1 - Cover for a workshop pit - Google Patents

Cover for a workshop pit Download PDF

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Publication number
EP3521533B1
EP3521533B1 EP19154974.0A EP19154974A EP3521533B1 EP 3521533 B1 EP3521533 B1 EP 3521533B1 EP 19154974 A EP19154974 A EP 19154974A EP 3521533 B1 EP3521533 B1 EP 3521533B1
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EP
European Patent Office
Prior art keywords
cover
pit
guide rail
workshop
guide
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EP19154974.0A
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German (de)
French (fr)
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EP3521533A1 (en
Inventor
Thomas CARATY
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Xpertive
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Xpertive
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    • 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 a cover for a workshop pit comprising drive means and a guide device allowing the closing and / or opening of supporting elements guided in rails arranged on the upper and opposite edges of said pit.
  • a cover for a mounting pit made up of articulated supporting elements guided in guide rails fixed at the level of the upper part of the pit.
  • Each carrier element comprises telescopic guide means cooperating with the guide rails in order to allow, under the effect of a drive motor, the guiding of the cover between an open position and a closed position.
  • a cover element for a workshop pit comprising a shutter made up of a plurality of sliding rollers which can be moved relative to the longitudinal edges of the pit and which can be placed in a storage area.
  • this type of covers or covers for a pit weigh a significant weight when they are in a horizontal position between an open position and a closed position due to the arrangement in continuous train of the supporting elements .
  • the significant weight of the covers or covers for the pit causes deterioration on the one hand of the drive means used and on the other hand of the guide means arranged on the upper edges of the pit.
  • the object of the present invention is to provide a cover for a workshop pit comprising a guide device and load-bearing elements grouped together in lengths in order to reduce the weight of the cover during its horizontal movements between an open position and an open position. closed position.
  • the cover for a workshop pit comprises supporting elements arranged in strips which are interconnected to maintain the kinematic chain during movements by drive means between an open position and a closed position of said cover and a guide device consisting on the one hand inside the pit and on each upper edge of a guide rail having a horizontal runway on which is arranged a guide plate making it possible to constitute a first runway.
  • a first double bearing device cooperating with the guide rail and making it possible to ensure storage in vertical position of each strip when the cover is in the open position in a storage space provided at the end of the pit and which is provided by a ramp storage race comprising a storage raceway arranged in the extension of the first so-called “internal” raceway of said guide rail, said first double-bearing device consisting of a fixed axle bearing free in rotation two bearings spaced apart the one from the other by a spacer in order to position respectively a first bearing on the first so-called “internal” raceway and a second bearing on the second so-called “outer” raceway of each guide rail.
  • the cover for a workshop pit comprises a strip which consists of a rigid carrier element called “head” and rigid carrier elements called “follower” which are all interconnected by means of a connection. Speak clearly.
  • the cover for a workshop pit comprises head-bearing elements which are made in aluminum profiles having respectively a horizontal upper face and a horizontal lower face joined by a vertical front face and a vertical rear face, said face.
  • rear vertical comprising a cylindrical longitudinal rib with an open profile, while each lateral end is integral with a first double bearing device intended to cooperate with the guide rail of the guide device.
  • the cover for a workshop pit comprises so-called “follower” supporting elements which are produced in aluminum profiles respectively having an upper face and a lower face joined by a front vertical edge and a rear vertical edge, said vertical edge.
  • front comprising a cylindrical longitudinal rib with an open profile, while each rear vertical edge comprises an eccentric axis, the external cylindrical profile of which is complementary to the internal one of the rib and of each supporting element to allow their articulated assembly.
  • the cover for workshop pit comprises a fixed axis which is integral at its free end with a plate allowing the attachment of a link connecting each strip of the cover to each other to maintain the kinematic chain of the latter between its open position and its closed position.
  • the cover for a workshop pit comprises so-called “follower” supporting elements comprising at each end a second guiding device which consists of a fixed axis carrying freely in rotation a bearing positioned on the second so-called rolling track. "Outer" of the guide rail.
  • the cover for a workshop pit comprises drive means which consist of a motor comprising driving wheels which are pressed against the underside of the rigid carrying elements by means of a mechanical tensioning device.
  • the cover for a workshop pit consists of a flexible and continuous canvas comprising load-bearing elements formed of a rigid crosspiece arranged inside a sheath formed in said flexible canvas at a regular distance in order to produce strips capable of deform according to the direction of movement of the pit cover.
  • the cover for a workshop pit comprises drive means which consist of a jaw guiding system actuated manually by a traction strap.
  • the cover for a workshop pit comprises a jaw guide system comprising at each end on the one hand a fixed axis on which is arranged free to rotate at least one bearing cooperating with the second rolling track of each rail. guide and on the other hand below each fixed axis and in the vertical plane of each bearing a jaw positioned vis-à-vis the underside and opposite of the running tracks of each guide rail and controlled in the position of locking and / or unlocking by means of the traction strap.
  • the cover for a workshop pit comprises a guide system, each jaw of which is held in the locked position against the underside of the guide rail by means of a spring.
  • the cover for a workshop pit comprises a guide system comprising in its middle and between the jaws a fixing support which is connected on the one hand to the traction strap and on the other hand by means of a chain or transmission cable to said jaws in order to be able to control the latter.
  • the cover for a workshop pit comprises a guide system, each jaw of which is integral with a friction pad coming into the locking position and resting against the lower and opposite face of the running tracks of each guide rail.
  • a pit Workshop 1 consists of a circulation corridor 1 opened upwardly and opening at one end in a storage space 1 b.
  • the workshop pit 1 is closed by a pit cover 10 which is moved in a horizontal direction by drive means 50 between a closed position and / or an open position.
  • the pit cover 10 consists of supporting elements 11, 12; 13 arranged in strips 14; 15 which are interconnected to maintain the kinematic chain during the horizontal movements of said carrier elements 11, 12, 13 by the drive means 50 between an open position and a closed position
  • the cover for workshop pit 10 comprises in the circulation corridor 1 a and more particularly at the level of the upper edges 1 c , 1 d of the vertical walls 1 e , 1 f a guide device 2 which is formed on each upper edge 1 c , 1 d of a guide rail 20 having a horizontal raceway 20 a on which is arranged a guide plate 20 b .
  • each guide rail 20 is separated into two by the guide plate 20 b to form a first raceway 20 c called "internal” and a second raceway 20 of so-called “external”.
  • the first so-called “internal” rolling track 20 c and the second so-called “external” rolling track 20 d of each guide rail 20 are arranged in parallel and continuous directions.
  • the first so-called “internal” rolling track 20 c is located between the corresponding vertical walls 1 e , 1 f of the circulation corridor 1 a of the workshop pit 1 and the guide plate 20 b , while the second track of so-called “outer” bearing 20 d is positioned between the guide plate 20 b and the peripheral edge 20 e of the guide rail 20.
  • the guide device 2 comprises in the extension of the guide rail 20 and fixed against the vertical walls 1 g , 1 h of the storage space 1 b of the workshop pit 1 is located in the extension of the vertical walls 1 e , 1 f of the circulation corridor 1 has a storage ramp 21 comprising a storage track 21 a arranged in the extension of the first track 20 c called "internal" of said rail guide.
  • Each strip 14 of the pit cover 10 consists of a rigid carrier element called “head” 11 and rigid carrier elements called “follower” 12 which are all interconnected by means of an articulated connection.
  • each width 14 which are made of aluminum profiles respectively having a horizontal upper face 11 a and a horizontal lower face 11 b joined by a vertical front face 11 c and a vertical rear face 11 d according to the direction of direction in the closed position of the cover 10 above the pit 1.
  • Each head bearing element 11 comprises on its rear vertical face 11 d and at the level of the connection with the horizontal lower face 11 b a cylindrical longitudinal rib with open profile 11 e .
  • Each head carrier element 11 comprises at each lateral end and at its horizontal upper face 11 a and its vertical front face 11 c , that is to say in a direction diametrically opposite to that carrying the cylindrical longitudinal rib with open profile 11 e a first double bearing device 22 intended to cooperate with the guide rail 20 of the guide device 20.
  • the first double bearing device 22 consists of a fixed axis 22a integral with the head carrying element 11 bearing free in rotation two bearings 22b , 22 c spaced from one another by a spacer 22 d in order to respectively position a first bearing 22 b on the first rolling track 20 c called “internal” and a second bearing 22 c on the second rolling track 20 d called “external” of each guide rail 20 fixed against the vertical walls 1 e , 1 f from workshop pit 1.
  • the first guide device 22 is positioned on the head carrying element 11 so that its horizontal upper face 11 a is in the same plane.
  • the fixed axis 22 a of the first guide device 22 is integral at its free end with a plate 22 e allowing the attachment of a link 22 f connecting each strip 14 to each other of the cover 10 to maintain the kinematic chain of this last between its open position and its closed position.
  • each strip 14 which are made of aluminum profiles respectively having an upper face 12 a and a lower face 12 b joined by a vertical front edge 12 c and a vertical rear edge 12 d .
  • Each said carrier member “follower” 12 has on its front vertical edge 12 c and at the connection with the lower face 12 b a cylindrical longitudinal rib 12 to open profile.
  • each so-called “follower” carrier element 12 comprises on its rear vertical edge 12 d opposite its front vertical edge 12 c and more particularly at the level of the connection with the lower face 12 b an eccentric axis 12 f whose outer cylindrical profile is complementary to the internal one of the rib and 11 th 12 th of each element carrier 11, 12 to allow the assembly of said carrier elements together by means of an articulated connection.
  • Each so-called “follower” carrier element 12 comprises a second guide device 23 arranged at each lateral end of the follower carrier element consists of a fixed axis 23 a bearing free in rotation a bearing 23 b which is positioned to be located in the same displacement plane as that of the second bearing 22 c of the first double bearing device 22 and more particularly on the second so-called “outer” bearing track 20 d of the guide rail 20.
  • the first and second guide devices 22 and 23 are positioned on the head 11 and follower 12 carrying elements so that their horizontal upper faces 11 a and 12 a lie in the same plane which coincides with that bearing the horizontal edges 1. i from workshop pit 1
  • each strip 14 is produced by a first carrier element called “follower” 12 which is connected to the head carrier element 11 via its eccentric axis 12 f which is housed inside the cylindrical rib 11. e of said head element in order to constitute a pivoting connection between the two elements 11 and 12.
  • each strip 14 is made up of several so-called “follower” carrier elements 12 assembled to each other and connected to the first so-called “follower” carrier member 12 joined to the head carrier element 11 by the cooperation of each eccentric axis 12 f cooperating with the corresponding cylindrical rib 12 f in order to produce a train of supporting elements linked together.
  • the drive means 50 consist of a motor 51, for example pneumatic, placed in the storage space 1b of the workshop pit 1.
  • the motor 51 comprises driving wheels 52 which are pressed against the lower face 12b of the so-called “follower” rigid supporting elements 12 by virtue of a mechanical tensioning device 53.
  • the pressure of the mechanical tensioning device 53 is determined to obtain sufficient adhesion of the driving wheels 52 on the lower face 12 b of the corresponding rigid carrier element called “follower” 12 in order to drive each width 14 of the pit cover. 10.
  • the widths 14 of the pit cover 10 are arranged in a vertical direction and suspended inside the storage space 1b of the workshop pit 1.
  • Each strip 14 is suspended by means of its head bearing element 11, one of the bearings 22 b of the first double bearing guide device 22 of which cooperates with the raceway 21 a of the storage ramp 21.
  • the closing of the workshop pit 1 is obtained when the driving wheels 52 are driven in rotation by the motor 51 making it possible to move the head carrying element 11 of the first strip 14 along the guide rail 20 causing them in its movement. so-called “follower” carrier elements 12 of said first strip 14 which respectively come into contact with the driving wheels 52.
  • each strip 14 is interconnected by the link 22 f makes it possible to ensure a continuous path of said strips 14 from the storage space 1 b to the guide rail 20 so that each element head carrier 11 and follower 12 come into contact with the driving wheels 52 driven in rotation by the motor 51.
  • each link 22 f The distance between the fixing points of each link 22 f at the level of each head carrying element 11 ensures a movement of each strip 14 which is precise, continuous and smoothly along the guide rails 20 positioned respectively on the walls. verticals 1 e and 1 f of workshop pit 1.
  • the motor 51 is actuated in reverse rotation so that the driving wheels 52 drive each strip 14 in the direction of the storage space 1b in order to position each of said width in a vertical position along the storage ramp 21 and this up to '' sufficiently opening cover 10 to allow technicians access to the interior of workshop pit 1.
  • FIGS 15 to 16 there is shown an alternative embodiment of the pit cover 10 which may consist of flexible carrier elements 13 arranged in a web 15 connected to one another to maintain the kinematic chain during the horizontal movements of said supporting elements 13 by the drive means 50 between an open position and a closed position.
  • the pit cover 10 consists of a flexible and continuous canvas 100 comprising, at regular intervals, supporting elements 13.
  • Each supporting element 13 is formed by a rigid cross member 13 a arranged inside the sleeve 100 a. provided in the flexible canvas at a regular distance.
  • the portion of flexible canvas provided between two crossbars 13 a constitutes a flexible and light strip 15 capable of deforming depending on the direction of movement of the pit cover 10.
  • the rigid sleepers 13 a are integral at each end of the first double-bearing device 22 carrying freely in rotation two bearings 22 b , 22 c spaced from each other by a spacer 22 d in order to respectively position a first bearing 22 b on the first rolling track 20 c called “internal” and a second bearing 22 c on the second rolling track 20 d called “external” of each guide rail 20 fixed against the vertical walls 1 e , 1 f of the pit d workshop 1.
  • the pit cover 10 is made in a flexible and continuous fabric 100 makes it possible to maintain the kinematic chain between each strip 15 in order to ensure the movements between its open position and its closed position.
  • drive means 50 consist of a traction strap and ratchet locking devices 65 allowing the movement and immobilization of the flexible canvas in closed position.
  • FIG 17 a variant of the drive means 50 for pit cover 10 has been shown consisting of strip 14 shaped from rigid carrier elements called “head” 11 and rigid carrier elements called “follower” 12 as described above.
  • the drive means 50 can be manual, that is to say they no longer include a motor 51.
  • the drive means 50 consist of a jaw guide system 54 which is integral with the first rigid carrier element called "head" 11 so that the technician can by means of the traction strap 55 move the pit cover 10 along guide rails 20 between an open and / or closed position.
  • the guide system 54 comprises at each end a fixed axis 54 a on which is arranged free to rotate at least one bearing 54 b cooperating with the second so-called “outer” rolling track 20 d of each guide rail 20.
  • the guidance system 54 has below each fixed shaft 54 a and in the vertical plane of each bearing 54 b c a jaw 54 positioned at the end of a lever 54b pivotally about a pivot 54 d so that the friction pad 54 e of each jaw 54 c is placed opposite the underside and opposite of the rolling tracks 20 c , 20 d of each guide rail 20.
  • Each jaw 54 c is held in the locked position, that is to say that the friction pads 54 e bear against the underside of the guide rail 20 by means of a spring 54 f acting on the articulated lever 54 h .
  • the guide system 54 prevents any possible displacement of the pit cover 10 along the guide rails 20.
  • the guide system 54 comprises in its middle and between the jaws 54 c a fixing support 54 g which is connected on the one hand to the traction strap 55 and on the other hand by means of a cable or a chain transmission 54 i to each lever 54 h .
  • the jaws 54 c are released from the guide rail 20 when the technician pulls on the traction strap 55 which actuates the levers 54 h via the fixing support 54 g so as to compress the springs 54 f .
  • Unlocking the jaws 54 c allows the technician while maintaining the tensile force on the strap 55 around the pit cover 10 along the guide rail 20.
  • the technician can then move the pit cover 10 either to completely or partially obstruct the workshop pit 1 or to free access to the interior of the latter.

Description

La présente invention est relative à une couverture pour fosse d'atelier comprenant des moyens d'entrainement et un dispositif de guidage permettant la fermeture et/ou l'ouverture d'éléments porteurs guidés dans des rails agencés sur les bords supérieurs et opposés de ladite fosse.The present invention relates to a cover for a workshop pit comprising drive means and a guide device allowing the closing and / or opening of supporting elements guided in rails arranged on the upper and opposite edges of said pit.

On connait d'après le brevet EP115087 une couverture pour fosse de montage comprenant une pluralité de poutres parallèles reposant sur des rails de guidage disposé au niveau du bord supérieur de la fosse. Chaque poutre forme un maillon d'une chaine articulée qui est entrainée entre une position d'ouverture et une position de fermeture par un moteur d'entrainement de poussée.We know from the patent EP115087 a mounting pit cover comprising a plurality of parallel beams resting on guide rails disposed at the upper edge of the pit. Each beam forms a link of an articulated chain which is driven between an open position and a closed position by a thrust drive motor.

On connait également d'après le brevet FR 2467 943 un couvercle pour fosse de montage constitué d'éléments porteurs articulés guidés dans des rails de guidage fixés au niveau de la partie supérieur de la fosse. Chaque élément porteur comporte des moyens de guidage télescopique coopérant avec les rails de guidage afin de permettre sous l'effet d'un moteur d'entrainement le guidage du couvercle entre une position d'ouverture et une position de fermeture.We also know from the patent FR 2467 943 a cover for a mounting pit made up of articulated supporting elements guided in guide rails fixed at the level of the upper part of the pit. Each carrier element comprises telescopic guide means cooperating with the guide rails in order to allow, under the effect of a drive motor, the guiding of the cover between an open position and a closed position.

On connait d'après le brevet DE 3415516 une couverture pour une fosse d'assemblage dont l'ouverture est recouverte d'une série d'éléments porteurs disposées les uns derrière les autres et reliées entre eux par des câbles. Les éléments porteurs sont équipés de galets permettant en position de repos d'être suspendus dans un poste collecteur sur des rails de suspension horizontaux, tandis que les éléments porteurs peuvent être tirés dans leur position fermée au-dessus de la fosse, et repoussés dans le poste de collecte par des tire-câbles, disposés de part et d'autre, sur des rails de guidage.We know from the patent FROM 3415516 a cover for an assembly pit, the opening of which is covered with a series of supporting elements arranged one behind the other and interconnected by cables. The supporting elements are equipped with rollers allowing in the rest position to be suspended in a collector station on horizontal suspension rails, while the supporting elements can be pulled into their closed position above the pit, and pushed back into the pit. collection station by cable pullers, arranged on either side, on guide rails.

On connait d'après le brevet EP 2258913 un élément de couverture pour une fosse d'atelier comprenant un volet constitué d'une pluralité de rouleaux coulissant qui peuvent être déplacés par rapport aux bords longitudinaux de la fosse et qui peuvent être placé dans une zone de stockage.We know from the patent EP 2258913 a cover element for a workshop pit comprising a shutter made up of a plurality of sliding rollers which can be moved relative to the longitudinal edges of the pit and which can be placed in a storage area.

On constate que les couvertures ou couvercles pour fosse de montage de l'art antérieur présentent certaines difficultés à assurer dans le temps les déplacements des éléments porteurs entre une position d'ouverture et une position de fermeture.It can be seen that the covers or lids for an assembly pit of the prior art present certain difficulties in ensuring over time the movements of the supporting elements between an open position and a closed position.

En effet, on constate que ce type de couvertures ou couvercles pour fosse pèsent un poids non négligeable lorsqu'elles se trouvent en position horizontale entre une position d'ouverture et une position de fermeture du fait de l'agencement en train continu des éléments porteurs. Le poids important des couvertures ou couvercles pour fosse entraine une détérioration d'une part des moyens d'entrainement utilisés et d'autre part des moyens de guidage agencés sur les bords supérieurs de la fosse.Indeed, it is observed that this type of covers or covers for a pit weigh a significant weight when they are in a horizontal position between an open position and a closed position due to the arrangement in continuous train of the supporting elements . The significant weight of the covers or covers for the pit causes deterioration on the one hand of the drive means used and on the other hand of the guide means arranged on the upper edges of the pit.

L'objet de la présente invention consiste à réaliser une couverture pour fosse d'atelier comprenant un dispositif de guidage et des éléments porteurs regroupés en lés afin de diminuer le poids de la couverture lors de ses déplacements horizontaux entre une position d'ouverture et une position de fermeture.The object of the present invention is to provide a cover for a workshop pit comprising a guide device and load-bearing elements grouped together in lengths in order to reduce the weight of the cover during its horizontal movements between an open position and an open position. closed position.

La couverture pour fosse d'atelier suivant la présente invention comprend des éléments porteurs agencés en lés qui sont reliés entre eux pour maintenir la chaine cinématique lors des déplacements par des moyens d'entrainement entre une position d'ouverture et une position de fermeture de ladite couverture et un dispositif de guidage constitué d'une part à l'intérieur de la fosse et sur chaque bord supérieur d'un rail de guidage présentant un chemin de roulement horizontal sur lequel est agencé un plat de guidage permettant de constituer une première piste de roulement dite « interne » et une seconde piste de roulement dite « externe » et d'autre part à chaque extrémité latérale des éléments porteurs de chaque lé un premier dispositif à double roulement coopérant avec le rail de guidage et permettant d'assurer le stockage en position verticale de chaque lé lorsque la couverture est en position d'ouverture dans un espace de stockage prévu en bout de fosse et qui est assuré par une rampe de stockage comprenant un chemin de roulement de stockage disposé dans le prolongement de la première piste de roulement dite « interne » dudit rail de guidage, ledit premier dispositif à double roulement étant constitué d'un axe fixe portant libre en rotation deux roulements espacés l'un de l'autre par une entretoise afin de positionner respectivement un premier roulement sur la première piste de roulement dite « interne » et un second roulement sur la seconde piste de roulement dite « externe » de chaque rail de guidage.The cover for a workshop pit according to the present invention comprises supporting elements arranged in strips which are interconnected to maintain the kinematic chain during movements by drive means between an open position and a closed position of said cover and a guide device consisting on the one hand inside the pit and on each upper edge of a guide rail having a horizontal runway on which is arranged a guide plate making it possible to constitute a first runway. so-called “internal” bearing and a second so-called “external” rolling track and on the other hand at each lateral end of the supporting elements of each strip a first double bearing device cooperating with the guide rail and making it possible to ensure storage in vertical position of each strip when the cover is in the open position in a storage space provided at the end of the pit and which is provided by a ramp storage race comprising a storage raceway arranged in the extension of the first so-called "internal" raceway of said guide rail, said first double-bearing device consisting of a fixed axle bearing free in rotation two bearings spaced apart the one from the other by a spacer in order to position respectively a first bearing on the first so-called “internal” raceway and a second bearing on the second so-called “outer” raceway of each guide rail.

La couverture pour fosse d'atelier suivant la présente invention comprend un lé qui est constitué d'un élément porteur rigide dit « de tête » et d'éléments porteurs rigide dits « suiveur » qui sont tous reliés entre eux au moyen d'une liaison articulé.The cover for a workshop pit according to the present invention comprises a strip which consists of a rigid carrier element called “head” and rigid carrier elements called “follower” which are all interconnected by means of a connection. Speak clearly.

La couverture pour fosse d'atelier suivant la présente invention comprend des éléments porteurs de tête qui sont réalisés dans des profils en aluminium présentant respectivement une face supérieure horizontale et une face inférieure horizontale réunis par une face verticale avant et une face verticale arrière, ladite face verticale arrière comprenant une nervure longitudinale cylindrique à profil ouvert, tandis que chaque extrémité latérale est solidaire d'un premier dispositif à double roulement destiné à coopérer avec le rail de guidage du dispositif de guidage.The cover for a workshop pit according to the present invention comprises head-bearing elements which are made in aluminum profiles having respectively a horizontal upper face and a horizontal lower face joined by a vertical front face and a vertical rear face, said face. rear vertical comprising a cylindrical longitudinal rib with an open profile, while each lateral end is integral with a first double bearing device intended to cooperate with the guide rail of the guide device.

La couverture pour fosse d'atelier suivant la présente invention comprend des éléments porteurs dits « suiveurs » qui sont réalisés dans des profils en aluminium présentant respectivement une face supérieure et une face inférieure réunis par un bord vertical avant et un bord vertical arrière ledit bord vertical avant comprenant une nervure longitudinale cylindrique à profil ouvert, tandis que chaque bord vertical arrière comprend un axe excentré dont le profil cylindrique externe est complémentaire à celui interne de la nervure et de chaque élément porteur pour permettre leur assemblage articulé.The cover for a workshop pit according to the present invention comprises so-called “follower” supporting elements which are produced in aluminum profiles respectively having an upper face and a lower face joined by a front vertical edge and a rear vertical edge, said vertical edge. front comprising a cylindrical longitudinal rib with an open profile, while each rear vertical edge comprises an eccentric axis, the external cylindrical profile of which is complementary to the internal one of the rib and of each supporting element to allow their articulated assembly.

La couverture pour fosse d'atelier suivant la présente invention comprend un axe fixe qui est solidaire en son extrémité libre d'une platine permettant la fixation d'un lien reliant chaque lé entre eux de la couverture pour maintenir la chaine cinématique de cette dernière entre sa position d'ouverture et sa position fermeture.The cover for workshop pit according to the present invention comprises a fixed axis which is integral at its free end with a plate allowing the attachment of a link connecting each strip of the cover to each other to maintain the kinematic chain of the latter between its open position and its closed position.

La couverture pour fosse d'atelier suivant la présente invention comprend des éléments porteurs dits « suiveurs » comprenant à chaque extrémité un second dispositif de guidage qui est constitué d'un axe fixe portant libre en rotation un roulement positionné sur la seconde piste de roulement dite « externe » du rail de guidage.The cover for a workshop pit according to the present invention comprises so-called “follower” supporting elements comprising at each end a second guiding device which consists of a fixed axis carrying freely in rotation a bearing positioned on the second so-called rolling track. "Outer" of the guide rail.

La couverture pour fosse d'atelier suivant la présente invention comprend des moyens d'entrainement qui sont constitués d'un moteur comportant des roues motrices qui sont plaquées contre la face inférieure des éléments porteurs rigides grâce à un dispositif de tension mécanique.The cover for a workshop pit according to the present invention comprises drive means which consist of a motor comprising driving wheels which are pressed against the underside of the rigid carrying elements by means of a mechanical tensioning device.

La couverture pour fosse d'atelier suivant la présente invention est constituée d'une toile souple et continue comprenant des éléments porteurs formé de traverse rigide disposée à l'intérieur de fourreau ménagé dans ladite toile souple à distance régulière afin de réaliser des lés susceptibles de se déformer en fonction de la direction de déplacement de la couverture de fosse.The cover for a workshop pit according to the present invention consists of a flexible and continuous canvas comprising load-bearing elements formed of a rigid crosspiece arranged inside a sheath formed in said flexible canvas at a regular distance in order to produce strips capable of deform according to the direction of movement of the pit cover.

La couverture pour fosse d'atelier suivant la présente invention comprend des moyens d'entrainement qui sont constitués d'un système de guidage à mâchoires actionné manuellement par une sangle de traction.The cover for a workshop pit according to the present invention comprises drive means which consist of a jaw guiding system actuated manually by a traction strap.

La couverture pour fosse d'atelier suivant la présente invention comprend un système de guidage à mâchoire comportant à chaque extrémité d'une part un axe fixe sur lequel est agencé libre en rotation au moins un roulement coopérant avec la seconde piste de roulement de chaque rail de guidage et d'autre part en dessous de chaque axe fixe et dans le plan vertical de chaque roulement une mâchoire positionnée en vis-à-vis de la face inférieure et opposée des pistes de roulement de chaque rail de guidage et commandée en position de verrouillage et/ou de déverrouillage par l'intermédiaire de la sangle de traction.The cover for a workshop pit according to the present invention comprises a jaw guide system comprising at each end on the one hand a fixed axis on which is arranged free to rotate at least one bearing cooperating with the second rolling track of each rail. guide and on the other hand below each fixed axis and in the vertical plane of each bearing a jaw positioned vis-à-vis the underside and opposite of the running tracks of each guide rail and controlled in the position of locking and / or unlocking by means of the traction strap.

La couverture pour fosse d'atelier suivant la présente invention comprend un système de guidage dont chaque mâchoire est maintenue en position verrouillée contre la face inférieure du rail de guidage par l'intermédiaire d'un ressort.The cover for a workshop pit according to the present invention comprises a guide system, each jaw of which is held in the locked position against the underside of the guide rail by means of a spring.

La couverture pour fosse d'atelier suivant la présente invention comprend un système de guidage comportant en son milieu et entre les mâchoires un support de fixation qui est relié d'une part à la sangle de traction et d'autre part au moyen d'une chaine ou câble de transmission aux dites mâchoires afin de pouvoir commander ces dernières.The cover for a workshop pit according to the present invention comprises a guide system comprising in its middle and between the jaws a fixing support which is connected on the one hand to the traction strap and on the other hand by means of a chain or transmission cable to said jaws in order to be able to control the latter.

La couverture pour fosse d'atelier suivant la présente invention comprend un système de guidage dont chaque mâchoire est solidaire d'un patin de frottement venant en position de verrouillage en appui contre la face inférieure et opposée des pistes de roulement de chaque rail de guidage.The cover for a workshop pit according to the present invention comprises a guide system, each jaw of which is integral with a friction pad coming into the locking position and resting against the lower and opposite face of the running tracks of each guide rail.

La description qui va suivre en regard du dessin annexé et donnée à titre d'exemple non limitatif permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente, et les avantages qu'elle est susceptible de procurer :

  • Figures 1 et 2 sont des vues en perspective illustrant une fosse d'atelier équipée de la couverture suivant la présente invention.
  • Figures 3 à 6 sont des vues représentant le positionnement du rail de guidage au niveau du bord supérieur interne de la fosse d'atelier suivant la présente invention.
  • Figures 7 à 9 sont des vues montrant l'élément porteur de tête de chaque lé de la couverture d'atelier et son dispositif de guidage à double roulement suivant la présente invention.
  • Figure 10 est une vue en coupe montrant le profil de l'élément porteur de chaque lé de la couverture d'atelier suivant la présente invention.
  • Figures 11 et 12 sont des vues illustrant l'élément porteur suiveur de chaque lé de la couverture d'atelier et son dispositif de guidage à simple roulement suivant la présente invention.
  • Figure 13 est une vue en coupe montrant le profil de l'élément porteur suiveur de chaque lé de la couverture d'atelier suivant la présente invention.
  • Figure 14 est une vue en perspective représentant les moyens d'entrainement de la couverture d'atelier suivant la présente invention.
  • Figures 15 et 16 sont des vues représentant les éléments porteur de la couverture réalisés dans une toile souple
  • Figure 17 est une vue schématique illustrant le système à ressort à verrouillage latéral des moyens d'entrainement de la couverture d'atelier suivant la présente invention.
The description which will follow with reference to the appended drawing and given by way of non-limiting example will make it possible to better understand the invention, the characteristics that it presents, and the advantages that it is likely to provide:
  • Figures 1 and 2 are perspective views illustrating a workshop pit equipped with the cover according to the present invention.
  • Figures 3 to 6 are views showing the positioning of the guide rail at the inner upper edge of the workshop pit according to the present invention.
  • Figures 7 to 9 are views showing the head bearing element of each strip of the workshop cover and its double bearing guide device according to the present invention.
  • Figure 10 is a sectional view showing the profile of the supporting element of each strip of the workshop cover according to the present invention.
  • Figures 11 and 12 are views illustrating the following carrying element of each strip of the workshop cover and its single-bearing guide device according to the present invention.
  • Figure 13 is a sectional view showing the profile of the following carrier element of each strip of the workshop cover according to the present invention.
  • Figure 14 is a perspective view showing the means for driving the workshop cover according to the present invention.
  • Figures 15 and 16 are views showing the supporting elements of the cover made in a flexible canvas
  • Figure 17 is a schematic view illustrating the spring system with lateral locking of the means for driving the workshop cover according to the present invention.

On a représenté en figures 1 à 6 une fosse d'atelier 1 constituée d'un couloir de circulation 1 a ouvert vers le haut et débouchant à l'une des extrémités dans un espace de stockage 1 b .We have represented in figures 1 to 6 a pit Workshop 1 consists of a circulation corridor 1 opened upwardly and opening at one end in a storage space 1 b.

La fosse d'atelier 1 est fermée par une couverture de fosse 10 qui est déplacée suivant une direction horizontale par des moyens d'entrainement 50 entre une position de fermeture et/ou une position d'ouverture.The workshop pit 1 is closed by a pit cover 10 which is moved in a horizontal direction by drive means 50 between a closed position and / or an open position.

La couverture de fosse 10 est constituée d'éléments porteurs 11, 12 ; 13 agencés en lés 14 ; 15 qui sont reliés entre eux pour maintenir la chaine cinématique lors des déplacements horizontaux desdits éléments porteurs 11, 12, 13 par les moyens d'entrainement 50 entre une position d'ouverture et une position de fermetureThe pit cover 10 consists of supporting elements 11, 12; 13 arranged in strips 14; 15 which are interconnected to maintain the kinematic chain during the horizontal movements of said carrier elements 11, 12, 13 by the drive means 50 between an open position and a closed position

La couverture pour fosse d'atelier 10 comporte dans le couloir de circulation 1 a et plus particulièrement au niveau des bords supérieurs 1 c , 1 d des parois verticales 1 e , 1 f un dispositif de guidage 2 qui est constitué sur chaque bord supérieur 1 c , 1 d d'un rail de guidage 20 présentant un chemin de roulement horizontal 20 a sur lequel est agencé un plat de guidage 20 b .The cover for workshop pit 10 comprises in the circulation corridor 1 a and more particularly at the level of the upper edges 1 c , 1 d of the vertical walls 1 e , 1 f a guide device 2 which is formed on each upper edge 1 c , 1 d of a guide rail 20 having a horizontal raceway 20 a on which is arranged a guide plate 20 b .

Le chemin de roulement 20 a de chaque rail de guidage 20 est séparé en deux par le plat de guidage 20 b permettant de constituer une première piste de roulement 20 c dite « interne » et une seconde piste de roulement 20 d dite « externe ».The raceway 20a of each guide rail 20 is separated into two by the guide plate 20 b to form a first raceway 20 c called "internal" and a second raceway 20 of so-called "external".

La première piste de roulement 20 c dite « interne » et la seconde piste de roulement 20 d dite « externe » de chaque rail de guidage 20 sont disposées suivant des directions parallèles et continues.The first so-called “internal” rolling track 20 c and the second so-called “external” rolling track 20 d of each guide rail 20 are arranged in parallel and continuous directions.

La première piste de roulement 20 c dite « interne » est située entre les parois verticales 1 e , 1 f correspondantes du couloir de circulation 1 a de la fosse d'atelier 1 et le plat de guidage 20 b , tandis que la seconde piste de roulement dite « externe » 20 d est positionnée entre le plat de guidage 20 b et le bord périphérique 20 e du rail de guidage 20.The first so-called “internal” rolling track 20 c is located between the corresponding vertical walls 1 e , 1 f of the circulation corridor 1 a of the workshop pit 1 and the guide plate 20 b , while the second track of so-called “outer” bearing 20 d is positioned between the guide plate 20 b and the peripheral edge 20 e of the guide rail 20.

Le dispositif de guidage 2 comporte dans le prolongement du rail de guidage 20 et fixé contre les parois verticales 1 g , 1 h de l'espace de stockage 1 b de la fosse d'atelier 1 se trouvant dans le prolongement des parois verticales 1 e , 1 f du couloir de circulation 1 a une rampe de stockage 21 comprenant un chemin de roulement de stockage 21 a disposé dans le prolongement de la première piste de roulement 20 c dite « interne » dudit rail de guidage.The guide device 2 comprises in the extension of the guide rail 20 and fixed against the vertical walls 1 g , 1 h of the storage space 1 b of the workshop pit 1 is located in the extension of the vertical walls 1 e , 1 f of the circulation corridor 1 has a storage ramp 21 comprising a storage track 21 a arranged in the extension of the first track 20 c called "internal" of said rail guide.

Chaque lé 14 de la couverture de fosse 10 est constitué d'un élément porteur rigide dit « de tête » 11 et d'éléments porteurs rigide dits « suiveur » 12 qui sont tous reliés entre eux au moyen d'une liaison articulé.Each strip 14 of the pit cover 10 consists of a rigid carrier element called “head” 11 and rigid carrier elements called “follower” 12 which are all interconnected by means of an articulated connection.

En figures 7 à 10 on a montré les éléments porteurs de tête 11 de chaque lé 14 qui sont réalisés dans des profils en aluminium présentant respectivement une face supérieure horizontale 11 a et une face inférieure horizontale 11 b réunis par une face verticale avant 11 c et une face verticale arrière 11 d selon le sens de direction en position de fermeture de la couverture 10 au-dessus la fosse 1.In figures 7 to 10 we have shown the head-bearing elements 11 of each width 14 which are made of aluminum profiles respectively having a horizontal upper face 11 a and a horizontal lower face 11 b joined by a vertical front face 11 c and a vertical rear face 11 d according to the direction of direction in the closed position of the cover 10 above the pit 1.

Chaque élément porteur de tête 11 comporte sur sa face verticale arrière 11 d et au niveau de la liaison avec la face inférieure horizontale 11 b une nervure longitudinale cylindrique à profil ouvert 11 e .Each head bearing element 11 comprises on its rear vertical face 11 d and at the level of the connection with the horizontal lower face 11 b a cylindrical longitudinal rib with open profile 11 e .

Chaque élément porteur de tête 11 comprend à chaque extrémité latérale et au niveau de sa face supérieure horizontale 11 a et de sa face verticale avant 11 c , c'est à dire dans une direction diamétralement opposée à celle portant la nervure longitudinale cylindrique à profil ouvert 11 e un premier dispositif à double roulement 22 destiné à coopérer avec le rail de guidage 20 du dispositif de guidage 20.Each head carrier element 11 comprises at each lateral end and at its horizontal upper face 11 a and its vertical front face 11 c , that is to say in a direction diametrically opposite to that carrying the cylindrical longitudinal rib with open profile 11 e a first double bearing device 22 intended to cooperate with the guide rail 20 of the guide device 20.

Le premier dispositif à double roulement 22 est constitué d'un axe fixe 22a solidaire de l'élément porteur de tête 11 portant libre en rotation deux roulements 22 b , 22 c espacés l'un de l'autre par une entretoise 22 d afin de positionner respectivement un premier roulement 22 b sur la première piste de roulement 20 c dite « interne » et un second roulement 22 c sur la seconde piste de roulement 20 d dite « externe » de chaque rail de guidage 20 fixé contre les parois verticales 1 e , 1 f de la fosse d'atelier 1.The first double bearing device 22 consists of a fixed axis 22a integral with the head carrying element 11 bearing free in rotation two bearings 22b , 22 c spaced from one another by a spacer 22 d in order to respectively position a first bearing 22 b on the first rolling track 20 c called “internal” and a second bearing 22 c on the second rolling track 20 d called “external” of each guide rail 20 fixed against the vertical walls 1 e , 1 f from workshop pit 1.

Le premier dispositif de guidage 22 est positionné sur l'élément porteur de tête 11 de manière que sa face supérieure horizontale 11 a se trouve dans un même plan.The first guide device 22 is positioned on the head carrying element 11 so that its horizontal upper face 11 a is in the same plane.

L'axe fixe 22 a du premier dispositif de guidage 22 est solidaire en son extrémité libre d'une platine 22 e permettant la fixation d'un lien 22 f reliant chaque lé 14 entre eux de la couverture 10 pour maintenir la chaine cinématique de cette dernière entre sa position d'ouverture et sa position fermeture.The fixed axis 22 a of the first guide device 22 is integral at its free end with a plate 22 e allowing the attachment of a link 22 f connecting each strip 14 to each other of the cover 10 to maintain the kinematic chain of this last between its open position and its closed position.

En figures 11 à 13 on a illustré les éléments porteurs dits « suiveurs » 12 de chaque lé 14 qui sont réalisés dans des profils en aluminium présentant respectivement une face supérieure 12 a et une face inférieure 12 b réunis par un bord vertical avant 12 c et un bord vertical arrière 12 d .In figures 11 to 13 there is illustrated the so-called “follower” supporting elements 12 of each strip 14 which are made of aluminum profiles respectively having an upper face 12 a and a lower face 12 b joined by a vertical front edge 12 c and a vertical rear edge 12 d .

Chaque élément porteur dit « suiveur » 12 comporte sur son bord vertical avant 12 c et au niveau de la liaison avec la face inférieure 12 b une nervure longitudinale cylindrique à profil ouvert 12 e .Each said carrier member "follower" 12 has on its front vertical edge 12 c and at the connection with the lower face 12 b a cylindrical longitudinal rib 12 to open profile.

Egalement, chaque élément porteur dit « suiveur » 12 comporte sur son bord vertical arrière 12 d opposée à son bord vertical avant 12 c et plus particulièrement au niveau de la liaison avec la face inférieure 12 b un axe excentré 12 f dont le profil cylindrique externe est complémentaire à celui interne de la nervure et 11 e 12 e de chaque élément porteur 11, 12 pour permettre l'assemblage desdits éléments porteurs entre eux au moyen d'une liaison articulée.Also, each so-called “follower” carrier element 12 comprises on its rear vertical edge 12 d opposite its front vertical edge 12 c and more particularly at the level of the connection with the lower face 12 b an eccentric axis 12 f whose outer cylindrical profile is complementary to the internal one of the rib and 11 th 12 th of each element carrier 11, 12 to allow the assembly of said carrier elements together by means of an articulated connection.

Chaque élément porteur dit « suiveur » 12 comporte un second dispositif de guidage 23 agencé à chaque extrémité latérale de l'élément porteur suiveur est constitué d'un axe fixe 23 a portant libre en rotation un roulement 23 b qui est positionné pour se trouver dans le même plan de déplacement que celui du second roulement 22 c du premier dispositif à double roulement 22 et plus particulièrement sur la seconde piste de roulement 20 d dite « externe » du rail de guidage 20.Each so-called “follower” carrier element 12 comprises a second guide device 23 arranged at each lateral end of the follower carrier element consists of a fixed axis 23 a bearing free in rotation a bearing 23 b which is positioned to be located in the same displacement plane as that of the second bearing 22 c of the first double bearing device 22 and more particularly on the second so-called “outer” bearing track 20 d of the guide rail 20.

Les premiers et seconds dispositifs de guidage 22 et 23 sont positionnés sur les éléments porteurs de tête 11 et suiveurs 12 de manière que leurs faces supérieures horizontales 11 a et 12 a se trouvent dans un même plan qui est confondus avec celui portant les bords horizontaux 1 i de la fosse d'atelier 1The first and second guide devices 22 and 23 are positioned on the head 11 and follower 12 carrying elements so that their horizontal upper faces 11 a and 12 a lie in the same plane which coincides with that bearing the horizontal edges 1. i from workshop pit 1

Ainsi, chaque lé 14 est réalisée par un premier élément porteur dit « suiveur » 12 qui est relié à l'élément porteur de tête 11 par l'intermédiaire de son axe excentré 12 f qui est logé à l'intérieur de la nervure cylindrique 11 e dudit élément de tête afin de constituer une liaison pivotante entre les deux éléments 11 et 12.Thus, each strip 14 is produced by a first carrier element called "follower" 12 which is connected to the head carrier element 11 via its eccentric axis 12 f which is housed inside the cylindrical rib 11. e of said head element in order to constitute a pivoting connection between the two elements 11 and 12.

Ensuite, chaque lé 14 est constituée de plusieurs éléments porteurs dits « suiveur » 12 assemblés les uns aux autres et reliés au premier élément porteur dits « suiveur » 12 réunis à l'élément porteur de tête 11 par la coopération de chaque axe excentré 12 f coopérant avec la nervure cylindrique 12 f correspondante afin de réaliser un train d'éléments porteurs liés entre eux.Then, each strip 14 is made up of several so-called “follower” carrier elements 12 assembled to each other and connected to the first so-called “follower” carrier member 12 joined to the head carrier element 11 by the cooperation of each eccentric axis 12 f cooperating with the corresponding cylindrical rib 12 f in order to produce a train of supporting elements linked together.

On a montré en figure 14 les moyens d'entrainement 50 permettant de déplacer la couverture 10 entre une position d'ouverture et/ou de fermeture et inversement lorsque cette dernière est réalisée à partir d'éléments porteurs rigides 11, 12 articulés entre eux.We showed in figure 14 the drive means 50 making it possible to move the cover 10 between an open and / or closed position and vice versa when the latter is made from rigid supporting elements 11, 12 articulated together.

Les moyens d'entrainement 50 sont constitués d'un moteur 51 par exemple pneumatique disposé dans l'espace de stockage 1 b de la fosse d'atelier 1.The drive means 50 consist of a motor 51, for example pneumatic, placed in the storage space 1b of the workshop pit 1.

Le moteur 51 comporte des roues motrices 52 qui sont plaquées contre la face inférieure 12 b des éléments porteurs rigides dits « suiveur » 12 grâce à un dispositif de tension mécanique 53.The motor 51 comprises driving wheels 52 which are pressed against the lower face 12b of the so-called “follower” rigid supporting elements 12 by virtue of a mechanical tensioning device 53.

La pression du dispositif de tension mécanique 53 est déterminée pour obtenir suffisamment d'adhérence des roues motrices 52 sur la face inférieure 12 b de l'élément porteur rigide dit « suiveur » 12 correspondant afin d'entrainer chaque lé 14 de la couverture de fosse 10.The pressure of the mechanical tensioning device 53 is determined to obtain sufficient adhesion of the driving wheels 52 on the lower face 12 b of the corresponding rigid carrier element called “follower” 12 in order to drive each width 14 of the pit cover. 10.

FONCTIONNEMENTOPERATION

Lorsque la fosse d'atelier 1 est ouverte, les lés 14 de la couverture de fosse 10 sont disposés suivant une direction verticale et suspendue à l'intérieur de l'espace de stockage 1 b de la fosse d'atelier 1.When the workshop pit 1 is open, the widths 14 of the pit cover 10 are arranged in a vertical direction and suspended inside the storage space 1b of the workshop pit 1.

Chaque lé 14 est suspendu au moyen de son élément porteur de tête 11 dont l'un des roulements 22 b du premier dispositif de guidage à double roulement 22 coopère avec le chemin de roulement 21 a de la rampe de stockage 21.Each strip 14 is suspended by means of its head bearing element 11, one of the bearings 22 b of the first double bearing guide device 22 of which cooperates with the raceway 21 a of the storage ramp 21.

Dans cette position de stockage, on remarque que les éléments porteurs dits « suiveurs » 12 de chaque lé 14 sont libres, c'est-à-dire, que les roulements 23 b de chaque second dispositif de guidage 23 ne sont pas en contact avec le chemin de roulement 21 a de la rampe de stockage 21.In this storage position, it can be seen that the so-called “follower” supporting elements 12 of each strip 14 are free, that is to say, that the bearings 23 b of each second guide means 23 are not in contact with the raceway 21a of the storage ramp 21.

Seul l'élément porteur de tête 11 du premier lé 14 de la couverture de fosse 10 est resté :

  • d'une part en position horizontale guidé à l'intérieur du rail de guidage 20 de manière que les roulements 22 b et 22 c soient positionnés respectivement sur les piste de roulement interne 20 c et externe 20 d du chemin de roulement 20 a ,
  • et d'autre part en contact avec les roues motrices 52 du moteur 51.
Only the head bearing element 11 of the first width 14 of the pit cover 10 remained:
  • on the one hand in a horizontal position guided inside the guide rail 20 so that the bearings 22 b and 22 c are positioned respectively on the internal 20 c and external 20 d raceways of the 20 a raceway,
  • and on the other hand in contact with the driving wheels 52 of the engine 51.

La fermeture de la fosse d'atelier 1 est obtenue lorsque les roues motrices 52 sont entrainées en rotation par le moteur 51 permettant de déplacer l'élément porteur de tête 11 du premier lé 14 le long du rail de guidage 20 entrainant dans son mouvement les éléments porteurs dits « suiveurs » 12 dudit premier lé 14 qui viennent respectivement en contact avec les roues motrices 52.The closing of the workshop pit 1 is obtained when the driving wheels 52 are driven in rotation by the motor 51 making it possible to move the head carrying element 11 of the first strip 14 along the guide rail 20 causing them in its movement. so-called “follower” carrier elements 12 of said first strip 14 which respectively come into contact with the driving wheels 52.

Les liaisons articulées entre les éléments porteurs de tête 11 et suiveurs 12 obtenues par le profil particulier de ces derniers permettent à chaque lé 14 de pouvoir passer d'une position verticale de stockage à une position horizontale de déplacement le long du rail de guidage 20The articulated connections between the head 11 and follower 12 carrying elements obtained by the particular profile of the latter allow each width 14 to be able to pass from a vertical storage position to a horizontal displacement position along the guide rail 20.

Le fait que les éléments porteurs de tête 11 de chaque lé 14 soient reliés entre eux par le lien 22 f permet d'assurer un cheminement continu desdits lés 14 de l'espace de stockage 1 b vers le rail de guidage 20 afin que chaque élément porteur de tête 11 et suiveur 12 viennent en contact avec les roues motrices 52 entrainées en rotation par le moteur 51.The fact that the head-bearing elements 11 of each strip 14 are interconnected by the link 22 f makes it possible to ensure a continuous path of said strips 14 from the storage space 1 b to the guide rail 20 so that each element head carrier 11 and follower 12 come into contact with the driving wheels 52 driven in rotation by the motor 51.

La distance entre les points de fixation de chaque lien 22 f au niveau de chaque élément porteur de tête 11 assure un déplacement de chaque lé 14 qui est précis, continu et sans à-coup le long des rails de guidage 20 positionnés respectivement sur les parois verticales 1 e et 1 f de la fosse d'atelier 1.The distance between the fixing points of each link 22 f at the level of each head carrying element 11 ensures a movement of each strip 14 which is precise, continuous and smoothly along the guide rails 20 positioned respectively on the walls. verticals 1 e and 1 f of workshop pit 1.

On note que l'agencement du premier dispositif à double roulement 22 sur les éléments porteurs de tête 11 de chaque lé 14 dont les roulements 22 b , 22 c coopèrent respectivement avec les pistes de roulement 20 c et 20 d du rail de guidage 20 permettant d'assurer un guidage de la couverture de fosse 10 entre sa position d'ouverture et/ou de fermeture sans risque que ladite couverture vienne frotter contre les parois verticales 1 e , 1 f de la fosse d'atelier 10 limitant ainsi les efforts physiques, les frottements et l'usure.It is noted that the arrangement of the first double bearing device 22 on the head bearing elements 11 of each strip 14, the bearings 22 b , 22 c of which respectively cooperate with the rolling tracks 20 c and 20 d of the guide rail 20 allowing guiding the pit cover 10 between its open and / or closed position without the risk of said cover rubbing against the vertical walls 1 e , 1 f of the workshop pit 10, thus limiting physical efforts , friction and wear.

On comprend de la description que la couverture de fosse 10 lorsqu'elle se trouve en position fermée c'est-à-dire obstruant la fosse d'atelier 1, fonctionne de la même manière que précédemment pour la déplacer en position d'ouverture.It will be understood from the description that the pit cover 10 when it is in the closed position, that is to say obstructing the workshop pit 1, operates in the same way as above to move it to the open position.

Ainsi le moteur 51 est actionné en rotation inverse de manière que les roues motrices 52 entrainent chaque lé 14 en direction de l'espace de stockage 1 b afin de positionner chacune desdits lé en position verticale le long de la rampe de stockage 21 et ceci jusqu'à l'ouverture suffisante de la couverture 10 pour permettre l'accès aux techniciens à l'intérieur de la fosse d'atelier 1.Thus the motor 51 is actuated in reverse rotation so that the driving wheels 52 drive each strip 14 in the direction of the storage space 1b in order to position each of said width in a vertical position along the storage ramp 21 and this up to '' sufficiently opening cover 10 to allow technicians access to the interior of workshop pit 1.

En figures 15 à 16 on a représenté une variante de réalisation de la couverture de fosse 10 qui peut être constituée d'éléments porteurs souples 13 agencés en lé 15 reliés entre eux pour maintenir la chaine cinématique lors des déplacements horizontaux desdits éléments porteurs 13 par les moyens d'entrainement 50 entre une position d'ouverture et une position de fermeture.In figures 15 to 16 there is shown an alternative embodiment of the pit cover 10 which may consist of flexible carrier elements 13 arranged in a web 15 connected to one another to maintain the kinematic chain during the horizontal movements of said supporting elements 13 by the drive means 50 between an open position and a closed position.

Dans cet exemple de réalisation, la couverture de fosse 10 est constituée d'une toile souple et continue 100 comprenant à espace régulier des éléments porteurs 13. Chaque élément porteur 13 est formé de traverse rigide 13 a disposée à l'intérieur de fourreau 100 a ménagé dans la toile souple à distance régulière.In this exemplary embodiment, the pit cover 10 consists of a flexible and continuous canvas 100 comprising, at regular intervals, supporting elements 13. Each supporting element 13 is formed by a rigid cross member 13 a arranged inside the sleeve 100 a. provided in the flexible canvas at a regular distance.

La portion de toile souple prévue entre deux traverses 13 a constitue un lé 15 souple et léger susceptible de se déformer en fonction de la direction de déplacement de la couverture de fosse 10.The portion of flexible canvas provided between two crossbars 13 a constitutes a flexible and light strip 15 capable of deforming depending on the direction of movement of the pit cover 10.

Les traverses rigides 13 a sont solidaires à chaque extrémité du premier dispositif à double roulement 22 portant libre en rotation deux roulements 22 b , 22 c espacés l'un de l'autre par une entretoise 22 d afin de positionner respectivement un premier roulement 22 b sur la première piste de roulement 20 c dite « interne » et un second roulement 22 c sur la seconde piste de roulement 20 d dite « externe » de chaque rail de guidage 20 fixé contre les parois verticales 1 e , 1 f de la fosse d'atelier 1.The rigid sleepers 13 a are integral at each end of the first double-bearing device 22 carrying freely in rotation two bearings 22 b , 22 c spaced from each other by a spacer 22 d in order to respectively position a first bearing 22 b on the first rolling track 20 c called "internal" and a second bearing 22 c on the second rolling track 20 d called "external" of each guide rail 20 fixed against the vertical walls 1 e , 1 f of the pit d workshop 1.

Le fait que la couverture de fosse 10 soit réalisée dans une toile souple et continue 100 permet de maintenir la chaine cinématique entre chaque lé 15 afin d'assurer les déplacements entre sa position d'ouverture et sa position fermeture.The fact that the pit cover 10 is made in a flexible and continuous fabric 100 makes it possible to maintain the kinematic chain between each strip 15 in order to ensure the movements between its open position and its closed position.

Les déplacements de la toile souple et continue 100 de la couverture de fosse 10 sont assurés par des moyens d'entrainement 50 qui sont constitués d'une sangle de traction et de dispositifs de verrouillage à cliquet 65 permettant le déplacement et l'immobilisation de la toile souple en position fermée.The movements of the flexible and continuous canvas 100 of the pit cover 10 are provided by drive means 50 which consist of a traction strap and ratchet locking devices 65 allowing the movement and immobilization of the flexible canvas in closed position.

Lorsque la couverture de fosse 10 est déplacée en position d'ouverture on constate que les lés 15 se déforment naturellement vers le bas du fait de la souplesse de la toile 100 afin que chaque lé 15 soit positionné suivant une direction verticale à l'intérieur de l'espace de stockage 1b.When the pit cover 10 is moved to the open position, it is observed that the strips 15 naturally deform downwards due to the flexibility of the fabric 100 so that each strip 15 is positioned in a vertical direction inside the pit. storage space 1 b .

En figure 17 on a montré une variante des moyens d'entrainement 50 pour couverture de fosse 10 constituée de lé 14 conformé à partir d'éléments porteur rigide dit « de tête » 11 et d'éléments porteurs rigide dits « suiveur » 12 comme décrit précédemment.In figure 17 a variant of the drive means 50 for pit cover 10 has been shown consisting of strip 14 shaped from rigid carrier elements called “head” 11 and rigid carrier elements called “follower” 12 as described above.

Les moyens d'entrainement 50 peuvent être manuels, c'est-à-dire qu'ils ne comportent plus de moteur 51.The drive means 50 can be manual, that is to say they no longer include a motor 51.

Dans ce cas les moyens d'entrainement 50 sont constitués d'un système de guidage à mâchoire 54 qui est solidaire du premier élément porteur rigide dit « de tête » 11 de manière que le technicien puisse au moyen de la sangle de traction 55 déplacer la couverture de fosse 10 le long des rails de guidage 20 entre une position d'ouverture et/ou de fermeture.In this case the drive means 50 consist of a jaw guide system 54 which is integral with the first rigid carrier element called "head" 11 so that the technician can by means of the traction strap 55 move the pit cover 10 along guide rails 20 between an open and / or closed position.

Le système de guidage 54 comporte à chaque extrémité un axe fixe 54 a sur lequel est agencé libre en rotation au moins un roulement 54 b coopérant avec la seconde piste de roulement 20 d dite « externe » de chaque rail de guidage 20.The guide system 54 comprises at each end a fixed axis 54 a on which is arranged free to rotate at least one bearing 54 b cooperating with the second so-called “outer” rolling track 20 d of each guide rail 20.

Le système de guidage 54 comporte en dessous de chaque axe fixe 54 a et dans le plan vertical de chaque roulement 54 b une mâchoire 54 c positionnée à l'extrémité d'un levier 54h articulée autour d'un pivot 54 d de manière que le patin de frottement 54 e de chaque mâchoire 54 c soit placé en vis-à-vis de la face inférieure et opposée des pistes de roulement 20 c , 20 d de chaque rail de guidage 20.The guidance system 54 has below each fixed shaft 54 a and in the vertical plane of each bearing 54 b c a jaw 54 positioned at the end of a lever 54b pivotally about a pivot 54 d so that the friction pad 54 e of each jaw 54 c is placed opposite the underside and opposite of the rolling tracks 20 c , 20 d of each guide rail 20.

Chaque mâchoire 54 c est maintenue en position verrouillée, c'est-à-dire que les patins de frottement 54 e sont en appui contre la face inférieure du rail de guidage 20 par l'intermédiaire d'un ressort 54 f agissant le levier articulé 54 h .Each jaw 54 c is held in the locked position, that is to say that the friction pads 54 e bear against the underside of the guide rail 20 by means of a spring 54 f acting on the articulated lever 54 h .

Dans cette position verrouillée des mâchoires 54 c , le système de guidage 54 empêche tout déplacement possible de la couverture de fosse 10 le long des rails de guidage 20.In this locked position of the jaws 54 c, the guide system 54 prevents any possible displacement of the pit cover 10 along the guide rails 20.

Le système de guidage 54 comporte en son milieu et entre les mâchoires 54 c un support de fixation 54 g qui est relié d'une part à la sangle de traction 55 et d'autre part au moyen d'un câble ou d'une chaine de transmission 54 i à chaque levier 54 h .The guide system 54 comprises in its middle and between the jaws 54 c a fixing support 54 g which is connected on the one hand to the traction strap 55 and on the other hand by means of a cable or a chain transmission 54 i to each lever 54 h .

Les mâchoires 54 c sont déverrouillées du rail de guidage 20 lorsque le technicien tire sur la sangle de traction 55 qui actionne par l'intermédiaire du support de fixation 54 g les leviers 54 h de manière à comprimer les ressorts 54 f .The jaws 54 c are released from the guide rail 20 when the technician pulls on the traction strap 55 which actuates the levers 54 h via the fixing support 54 g so as to compress the springs 54 f .

Le déverrouillage des mâchoires 54 c permet au technicien tout en maintenant l'effort de traction sur la sangle 55 de déplacer la couverture de fosse 10 le long du rail de guidage 20.Unlocking the jaws 54 c allows the technician while maintaining the tensile force on the strap 55 around the pit cover 10 along the guide rail 20.

Le technicien peut alors déplacer la couverture de fosse 10 soit pour obstruer complètement ou partiellement la fosse d'atelier 1 soit pour libérer l'accès à l'intérieur de cette dernière.The technician can then move the pit cover 10 either to completely or partially obstruct the workshop pit 1 or to free access to the interior of the latter.

Claims (13)

  1. Cover (10) for a workshop pit (1), comprising support elements (11, 12; 13) arranged in successive portions (14; 15) which are connected to each other to maintain the drive train during movement by means drive (50) between an open position and a closed position of said cover (10) and a guide device (2) formed, on the one hand, inside the pit (1) and on each upper edge (1c, 1d), of a guide rail (20) having a horizontal rolling track (20a); said cover (10) is characterized in that, on said horizontal rolling track (20a), is arranged a guide flat section (20b) making it possible to constitute a first rolling track (20c) referred to as "internal" and a second rolling track (20d) referred to as "external", and, on the other hand, at each lateral end of the support elements (11; 13) of each successive portion (14, 15) of the cover, a first double-roller device (22) cooperating with the guide rail (20) and making it possible to store each successive portion (14, 15) in vertical position when the cover (10) is in the open position in a storage space (1b) provided at the end of the pit (1) and which is performed by a storage ramp (21) comprising a storage rolling track (21a) disposed in the extension of the first rolling track (20c) referred to as "internal" of said guide rail (20), said first double-roller device (22) being constituted by a fixed pin (22a) carrying two freely rotatable rollers (22b, 22c) spaced from each other by a spacer (22d) in order to position respectively a first roller (22b) on the first rolling track (20c) referred to as "internal" and a second roller (22c) on the second rolling track (20d) referred to as "external" of each guide rail.
  2. Cover (10) for a workshop pit (1) according to claim 1, characterized in that each successive portion (14) of the pit cover (10) consists of a rigid support element referred to as "leader" (11) and rigid support elements referred to as "follower" (12) which are all connected to each other by means of an articulated link.
  3. Cover (10) for a workshop pit (1) according to claim 2, characterized in that the leader support elements (11) are made of aluminum profiles respectively having a horizontal upper face (11a) and a horizontal lower face (11b) joined by a front vertical face (11c) and a rear vertical face (11d), said rear vertical face (11d) comprising a cylindrical longitudinal rib with open profile (11e), while each lateral end is integral with a first double-roller device (22) intended to cooperate with the guide rail (20) of the guide device (2).
  4. Cover (10) for a workshop pit (1) according to claim 2, characterized in that the support elements referred to as "followers" (12) are made of aluminum profiles respectively having an upper face (12a) and a lower face (12b) joined by a front vertical edge (12c) and a rear vertical edge (12d), said front vertical edge (12c) comprising a cylindrical longitudinal rib with open profile (12e), while each rear vertical edge (12d) comprises an eccentric shaft (12f) whose external cylindrical profile is complementary to the internal profile to the rib (11e, 12e) of each support element (11, 12) to allow their articulated connection.
  5. Cover (10) for a workshop pit (1) according to claim 1, characterized in that the fixed pin (22a) is integral at its free end with a plate (22e) allowing the fixing of a link (22f) connecting each successive part (14) of the cover (10) one to another so as to maintain the drive train of the latter between its open position and its closed position.
  6. Cover (10) for a workshop pit (1) according to claim 4, characterized in that each support element referred to as "follower" (12) comprises a second guide device (23) which consists of a fixed pin (23a) bearing a roller (23b) freely rotatable, positioned on the second rolling track (20d) referred to as "external" of the guide rail (20).
  7. Cover (10) for a workshop pit (1) according to claim 1, characterized in that the drive means (50) consist of a motor (51) comprising driving wheels (52) which are pressed against the underside of the rigid support elements (11, 12) by means of a mechanical tensioning device (53).
  8. Cover (10) for a workshop pit (1) according to claim 1, characterized in that it consists of a flexible and continuous fabric (100) comprising support elements (13) formed of rigid crosspieces (13a) disposed inside sheaths (100a) formed in said flexible fabric at regular distance in order to produce successive parts (15) capable of deforming as a function of the direction of movement of the pit cover (10).
  9. Cover for a workshop pit according to claim 1, characterized in that the drive means (50) consist of a jaw guide system (54) manually actuated by a traction strap (55).
  10. Cover for a workshop pit according to claim 9, characterized in that the jaw guide system (54) comprises at each end, on the one hand, a fixed pin (54a) on which is arranged at least one freely rotatable roller (54b) cooperating with the second rolling track (20d) of each guide rail (20) and, on the other hand, below each fixed pin (54a) and in the vertical plane of each roller (54b), a jaw (54c) positioned so as to face the lower and opposite face of the rolling tracks (20c, 20d) of each guide rail (20) and controlled in the locking and / or unlocking position via the traction strap (55).
  11. Cover for a workshop pit according to claim 10, characterized in that each jaw (54c) is held in the locked position against the underside of the guide rail (20) by means of a spring (54f).
  12. Cover for a workshop pit according to claim 11, characterized in that the guide system (54) comprises in its middle and between the jaws (54c) a fixing support (54g) which is connected to the traction strap (55) on the one hand, and by means of a transmission cable or chain (54i) connected to said jaws (54c) on the other hand, in order to be able to control the latter.
  13. Cover for a workshop pit according to claim 11, characterized in that each jaw (54c) is integral with a friction pad (54e) coming into a locking position against the lower and opposite face of the rolling tracks (20c, 20d) of each guide rail (20).
EP19154974.0A 2018-02-01 2019-02-01 Cover for a workshop pit Active EP3521533B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1850847A FR3077322B1 (en) 2018-02-01 2018-02-01 COVER FOR WORKSHOP PIT

Publications (2)

Publication Number Publication Date
EP3521533A1 EP3521533A1 (en) 2019-08-07
EP3521533B1 true EP3521533B1 (en) 2020-07-22

Family

ID=62092074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19154974.0A Active EP3521533B1 (en) 2018-02-01 2019-02-01 Cover for a workshop pit

Country Status (2)

Country Link
EP (1) EP3521533B1 (en)
FR (1) FR3077322B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3415516A1 (en) * 1984-04-26 1985-10-31 Rudolf 7132 Illingen Siewert Covering for assembly pits
IT1396579B1 (en) * 2009-10-23 2012-12-14 Truck Training Ct Italy Srl COVERAGE ELEMENT PARTICULARLY FOR PUTS OF MECHANICAL AND SIMILAR WORKSHOPS.
DE102011111940A1 (en) * 2011-08-30 2013-02-28 Boldt + Faßbender GmbH Walk-in, flat-running gate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3077322A1 (en) 2019-08-02
FR3077322B1 (en) 2020-03-06
EP3521533A1 (en) 2019-08-07

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