EP0420778B1 - Apparatus for capping a manhole - Google Patents

Apparatus for capping a manhole Download PDF

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Publication number
EP0420778B1
EP0420778B1 EP90470052A EP90470052A EP0420778B1 EP 0420778 B1 EP0420778 B1 EP 0420778B1 EP 90470052 A EP90470052 A EP 90470052A EP 90470052 A EP90470052 A EP 90470052A EP 0420778 B1 EP0420778 B1 EP 0420778B1
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EP
European Patent Office
Prior art keywords
frame
grid
axis
grating
pivoting
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.)
Expired - Lifetime
Application number
EP90470052A
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German (de)
French (fr)
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EP0420778A1 (en
Inventor
Francis Berthon
Jean-Claude Hauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pont a Mousson SA
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Pont a Mousson SA
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Publication date
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Priority to AT90470052T priority Critical patent/ATE88523T1/en
Publication of EP0420778A1 publication Critical patent/EP0420778A1/en
Application granted granted Critical
Publication of EP0420778B1 publication Critical patent/EP0420778B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1427—Locking devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E03F2005/061—Gully gratings hinged to the body of the gully
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E03F2005/066—Gully gratings with means for protecting against vandalism

Definitions

  • the present invention relates to a device for crowning an evacuation chimney consisting of a removable tilting grid resting, when the device is in the closed position, in a frame sealed in the ground.
  • the present invention more particularly relates to a crowning device of the above type having a locking of the removable tilting grid in its frame.
  • the locking is ensured by a finger rotatably mounted on the grid and whose position relative to the frame determines the closing of the exhaust chimney.
  • the present invention therefore aims to solve the above problems.
  • the present invention relates more particularly to a device for crowning an evacuation chimney consisting of a grid of generally rectangular shape, articulated in a frame of generally rectangular shape along a pivot axis of the grid corresponding to one of the sides. thereof and coincident with an axis parallel to one of the sides of the frame when the grid is mounted in the frame, this grid being provided with bars connected to each other by spacers, in which the grid is divided, according to its pivot axis, in a middle part and two lateral parts connected elastically to the middle part by spacers not located on the pivot axis and acting as torsion bars, one end of the middle part adjoining the axis of pivoting being intended to come into abutment against a corresponding surface of the frame by exerting a couple opposing the movement of the grid around its axis of p apparentlyly.
  • the device according to the invention as shown in FIG. 1, consists of a frame 1 sealed in the ground, for example in a road surface, at the end upper of an exhaust chimney 2, and a removable hinged grid 3 forming a cover.
  • the frame 1 and the grid 3 have, in plan, a generally rectangular shape.
  • the frame 1 has a vertical, rectangular skirt 4, provided, at its periphery, with a peripheral support sole 5 serving for sealing the frame and, on its internal face, with a flange 6 serving as a support surface for grid 3.
  • Two opposite lateral faces 7, 8 of the skirt 4 each have, in the immediate vicinity of a lateral face 9 of the skirt 4 perpendicular to the two faces 7, 8, a cavity 10 of axis XX parallel to the perpendicular lateral face 9, the two cavities 10 of the opposite side faces 7, 8 being coaxial.
  • the skirt 4 is terminated by a side face 11 opposite and parallel to the side face 9.
  • Each cavity 10 is formed in the skirt 4 of the frame above the support flange 6, approximately halfway between this support flange 6 and the top of the skirt 4.
  • each cavity 10 and the perpendicular lateral face 9 is equal to the distance between each cavity 10 and the support flange 6.
  • the grid 3 is intended to be mounted in the frame 1. More particularly, it is intended to be housed in the skirt 4 while being placed on the support flange 6.
  • FIG. 1 It therefore has, according to the embodiment shown in FIG. 1, a generally rectangular shape, two opposite sides 12, 13 being intended to come opposite the opposite lateral faces 7, 8 of the skirt 4, one side 14 perpendicular to these two sides 12, 13 being intended to come opposite the perpendicular lateral face 9 of the skirt 4, a fourth side 15, opposite the side 14, ending this grid 3 and being intended to come opposite the face 11 of the skirt 4.
  • the two sides 12 and 13 of this grid 3 each consist of a lateral bar 16, one end of which 161 is provided, at mid-height on an external lateral face thereof, with a pivot 17, of axis YY horizontal, when the grid 3 is mounted in the frame 1, with the horizontal axis XX of the cavities 10 of the skirt 4, these cavities 10 of the frame 1 being intended to receive the pivots 17 of the grid 3 which can thus pivot around of axis XX.
  • the grid 3 consists of a series of bars 18, parallel in the embodiment shown, each bar 18 being connected to an adjacent bar by at least one spacer 19.
  • each lateral bar 16 is also connected to the bar 18 which is adjacent to it by at least one spacer 19.
  • the bars 18 consist of an upper face 20, defining the upper surface of the grid 3, and of a lower face 21, intended to come into contact, at one end 22, respectively 23, of the bars 18, with the flange support 6 in its zone adjoining the lateral face 9, respectively 11, of the skirt 4.
  • the grid 3 being intended to be movable in rotation about the axis XX of the frame 1, the lateral bars 16, by their end 161, and the bars 18, by their end 22, being at immediate proximity of the support flange 6 and the side face 9 of the skirt 4, there is a theoretical cylindrical surface S, of axis XX and of radius R relative to the axis XX of the frame 1, such that any part P of the grid 3 whose volume will exceed this theoretical surface S, will come into contact, during the rotation of this grid 3 around the axis XX of the frame 1, either with the support flange 6, as shown, either with the skirt 4.
  • the radius R corresponds to the minimum distance between the axis X-X of the cavities 10 and the frame 1.
  • a grid 3 consisting, along the axis YY of this grid 3, of a median zone Z1 and two lateral zones Z2, the median zone Z1 having at least one part P, located on the side 14 of the grid 3, which protrudes from this theoretical surface S, the middle zone Z1 being elastically connected to the lateral zones Z2 of the grid 3 by spacers 191 not located on the axis XX and playing the role of torsion bars, the grid 3 being in one piece and the natural elasticity of the material constituting the grid 3, for example spheroidal graphite cast iron, being sufficient.
  • each profile P1, P2 there are three characteristic points M, M1, M2, the point M corresponding to the point of the profile P1 or P2 furthest from the axis XX, the points M1 and M2 corresponding to the two points intersection of profile P1 or P2 with surface S.
  • a grid 3 provided with a middle zone Z1 having a profile of type P2 is described in Fig.5.
  • the grid 3 is pinched at the ends 161 of the side bars 16.
  • the grid is divided into three zones, the central zone Z1 being elastically connected to the two lateral zones Z2, the elastic connection being simply produced by a spacer.
  • pivots 17 of the grid 3 are placed opposite the orifices 10 of the frame 1 into which they penetrate.
  • the grid 3 is vertical.
  • the grid 3 is placed vertically in the frame 1, it is rotated around the axis XX of the frame 1 until the part P of the middle zone Z1 comes into contact with the frame 1, ie at level of the support flange 6 or at the level of the face 9 of the skirt 4, at the point of contact M1 corresponding to the intersection of the curve S with the profile of the part P.
  • the central zone Z1 by twisting the spacers 191 which connect it to the lateral zones Z2, deviates from the plane defined by the two lateral zones Z2, thereby creating a torque, which opposes the closing of the grid, the part P rubbing against the corresponding surface of the frame 1 against which it rests.
  • the grid 3 is prestressed.
  • the grid when resting on the corresponding surfaces of the frame 1, the grid has a middle part Z1 resting by its part P on the support flange 6, this support being produced so that the spacers 191 which connect the zone middle Z1 to the two lateral parts Z2 are in torsion by exerting a torque which opposes, from the start when the grid 3 rests on the frame 1, the rotation of the grid 3.
  • the crowning device of an evacuation chimney makes it possible, on the one hand, to lock the grid in its frame in the closed position and, on the other hand, to prevent inadvertent closing when the grid is in vertical position.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Emergency Lowering Means (AREA)
  • Sewage (AREA)
  • Golf Clubs (AREA)
  • Chutes (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Air-Flow Control Members (AREA)
  • Transmission Devices (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Tents Or Canopies (AREA)

Abstract

The apparatus consists of a grille (3) articulated in a frame along an axis for pivoting of the grille (3) corresponding to one of the sides of the latter, this grille (3) being fitted with bars (18) connected together by cross members (19), and in which the grille is divided, along its pivotal axis, into a middle portion (Z1) and two lateral portions (Z2) elastically connected to the middle portion (Z1), one end of the middle portion (Z1), contiguous to the pivotal axis, being intended to bear against a corresponding surface of the frame exerting a moment opposing the movement of the grille (3) about its pivotal axis. <IMAGE>

Description

La présente invention est relative à un dispositif de couronnement d'une cheminée d'évacuation constitué d'une grille amovible basculante reposant, lorsque le dispositif est en position fermée, dans un cadre scellé dans le sol.The present invention relates to a device for crowning an evacuation chimney consisting of a removable tilting grid resting, when the device is in the closed position, in a frame sealed in the ground.

La présente invention a plus particulièrement pour objet une dispositif de couronnement du type ci-dessus présentant un verrouillage de la grille amovible basculante dans son cadre.The present invention more particularly relates to a crowning device of the above type having a locking of the removable tilting grid in its frame.

En effet, dans de tels dispositifs de couronnement la grille doit être parfaitement verrouillée, d'une part pour éviter une ouverture accidentelle de la cheminée d'évacuation, et, d'autre part, pour éviter des actes de vandalisme au cours desquels la grille peut être volontairement ôtée de son cadre.Indeed, in such crowning devices the grid must be perfectly locked, on the one hand to avoid accidental opening of the exhaust chimney, and, on the other hand, to avoid acts of vandalism during which the grid can be voluntarily removed from its frame.

On connaît, par exemple par le document FR 1 249 110, une grille amovible basculante rectangulaire présentant deux pivots latéraux coaxiaux permettant à cette grille de pivoter autour d'un de ces côtés, ces pivots s'engageant dans des logements ménagés dans le cadre.We know, for example from document FR 1 249 110, a removable rectangular tilting grid having two coaxial lateral pivots allowing this grid to pivot around one of these sides, these pivots engaging in housings formed in the frame.

Dans ce dispositif, le verrouillage est assuré par un doigt monté rotatif sur la grille et dont la position par rapport au cadre détermine la fermeture de la cheminée d'évacuation.In this device, the locking is ensured by a finger rotatably mounted on the grid and whose position relative to the frame determines the closing of the exhaust chimney.

Si ce dispositif permet de verrouiller effectivement la grille dans son cadre, en évitant ainsi une ouverture accidentelle de la cheminée d'évacuation, il présente trois types d'inconvénients.If this device effectively locks the grid in its frame, thereby avoiding accidental opening of the exhaust chimney, it has three types of drawbacks.

En premier lieu, il nécessite l'utilisation d'une pièce mobile supplémentaire, le doigt rotatif, qui, outre l'accroissement du coût de réalisation qu'elle engendre, est susceptible de se bloquer et donc de ne plus permettre un verrouillage, ou un déverrouillage, ultérieur.Firstly, it requires the use of an additional movable part, the rotary finger, which, in addition to the increase in the cost of production which it generates, is capable of locking up and therefore of no longer allowing locking, or unlocking, later.

En deuxième lieu, il ne permet pas d'éviter une ouverture volontaire par des personnes non autorisées puisque une simple clé pour manoeuvrer le doigt suffit.Secondly, it does not prevent voluntary opening by unauthorized persons since a simple key to operate the finger is sufficient.

Enfin, une fois la grille en position ouverte, et donc verticale, celle-ci peut se refermer intempestivement ce qui représente un réel danger pour le manipulateur.Finally, once the grid in the open position, and therefore vertical, it can close unexpectedly which represents a real danger for the manipulator.

La présente invention a donc pour but de résoudre les problèmes ci-dessus.The present invention therefore aims to solve the above problems.

La présente invention a plus particulièrement pour objet un dispositif de couronnement d'une cheminée d'évacuation constitué d'une grille de forme générale rectangulaire, articulée dans un cadre de forme générale rectangulaire selon un axe de pivotement de la grille correspondant à un des côtés de celle-ci et confondu avec un axe parallèle à l'un des côtés du cadre quand la grille est montée dans le cadre, cette grille étant munie de barreaux reliés les uns aux autres par des entretoises, dans lequel la grille est divisée, selon son axe de pivotement, en une partie médiane et deux parties latérales reliées élastiquement à la partie médiane par des entretoises non situées sur l'axe de pivotement et jouant le rôle de barres de torsion, une extrémité de la partie médiane jouxtant l'axe de pivotement étant destinée à venir en appui contre une surface correspondante du cadre en exerçant un couple s'opposant au mouvement de la grille autour de son axe de pivotement.The present invention relates more particularly to a device for crowning an evacuation chimney consisting of a grid of generally rectangular shape, articulated in a frame of generally rectangular shape along a pivot axis of the grid corresponding to one of the sides. thereof and coincident with an axis parallel to one of the sides of the frame when the grid is mounted in the frame, this grid being provided with bars connected to each other by spacers, in which the grid is divided, according to its pivot axis, in a middle part and two lateral parts connected elastically to the middle part by spacers not located on the pivot axis and acting as torsion bars, one end of the middle part adjoining the axis of pivoting being intended to come into abutment against a corresponding surface of the frame by exerting a couple opposing the movement of the grid around its axis of p foolishly.

Les caractéristiques et avantages ressortiront à la suite de la description qui va suivre faite en référence aux dessins donnés uniquement à titre d'exemple non limitatif et parmi lesquels :

  • La Fig. 1 représente une vue schématique en coupe d'un dispositif de couronnement de cheminée d'évacuation,
  • La Fig. 2 représente une vue en plan du cadre du dispositif selon l'invention,
  • La Fig. 3 représente une vue en plan de la grille du dispositif selon l'invention,
  • La Fig. 4 représente un détail du dispositif selon l'invention,
  • La Fig. 5 représente une variante du dispositif selon l'invention,
  • La Fig. 6 illustre le principe de fonctionnement du dispositif selon l'invention.
The characteristics and advantages will become apparent after the description which follows made with reference to the drawings given solely by way of non-limiting example and among which:
  • Fig. 1 represents a schematic sectional view of a device for crowning an exhaust chimney,
  • Fig. 2 represents a plan view of the frame of the device according to the invention,
  • Fig. 3 represents a plan view of the grid of the device according to the invention,
  • Fig. 4 shows a detail of the device according to the invention,
  • Fig. 5 represents a variant of the device according to the invention,
  • Fig. 6 illustrates the operating principle of the device according to the invention.

Le dispositif selon l'invention, tel que représenté à la Fig. 1, est constitué d'un cadre 1 scellé dans le sol, par exemple dans un revêtement de chaussée, à l'extrémité supérieure d'une cheminée d'évacuation 2, et d'une grille amovible articulée 3 formant couvercle.The device according to the invention, as shown in FIG. 1, consists of a frame 1 sealed in the ground, for example in a road surface, at the end upper of an exhaust chimney 2, and a removable hinged grid 3 forming a cover.

Selon l'exemple de réalisation représenté, le cadre 1 et la grille 3 ont, en plan, une forme générale rectangulaire.According to the embodiment shown, the frame 1 and the grid 3 have, in plan, a generally rectangular shape.

Le cadre 1 présente une jupe 4 verticale, rectangulaire, munie, à sa périphérie, d'une semelle d'appui périphérique 5 servant au scellement du cadre et, à sa face interne, d'une collerette 6 servant de surface d'appui à la grille 3.The frame 1 has a vertical, rectangular skirt 4, provided, at its periphery, with a peripheral support sole 5 serving for sealing the frame and, on its internal face, with a flange 6 serving as a support surface for grid 3.

Deux faces latérales opposées 7, 8 de la jupe 4 présentent chacune, à proximité immédiate d'une face latérale 9 de la jupe 4 perpendiculaire aux deux faces 7, 8, une cavité 10 d'axe X-X parallèle à la face latérale perpendiculaire 9, les deux cavités 10 des faces latérales opposées 7, 8 étant coaxiales.Two opposite lateral faces 7, 8 of the skirt 4 each have, in the immediate vicinity of a lateral face 9 of the skirt 4 perpendicular to the two faces 7, 8, a cavity 10 of axis XX parallel to the perpendicular lateral face 9, the two cavities 10 of the opposite side faces 7, 8 being coaxial.

La jupe 4 est terminée par une face latérale 11 opposée et parallèle à la face latérale 9.The skirt 4 is terminated by a side face 11 opposite and parallel to the side face 9.

Chaque cavité 10 est ménagée dans la jupe 4 du cadre au dessus de la collerette d'appui 6, à peu près à mi-hauteur entre cette collerette d'appui 6 et le haut de la jupe 4.Each cavity 10 is formed in the skirt 4 of the frame above the support flange 6, approximately halfway between this support flange 6 and the top of the skirt 4.

Préférentiellement, la distance entre chaque cavité 10 et la face latérale perpendiculaire 9 est égale à la distance entre chaque cavité 10 et la collerette d'appui 6.Preferably, the distance between each cavity 10 and the perpendicular lateral face 9 is equal to the distance between each cavity 10 and the support flange 6.

La grille 3 est destinée à venir être montée dans le cadre 1. Plus particulièrement, elle est destinée a venir se loger dans la jupe 4 en étant posée sur la collerette d'appui 6.The grid 3 is intended to be mounted in the frame 1. More particularly, it is intended to be housed in the skirt 4 while being placed on the support flange 6.

Elle présente donc, selon l'exemple de réalisation représenté Fig. 1, une forme générale rectangulaire, deux côtés opposés 12, 13 étant destinés à venir en regard des faces latérales opposées 7,8 de la jupe 4, un côté 14 perpendiculaire à ces deux côtés 12, 13 étant destiné à venir en regard de la face latérale perpendiculaire 9 de la jupe 4, un quatrième côté 15, opposé au côté 14, terminant cette grille 3 et étant destiné à venir en regard de la face 11 de la jupe 4.It therefore has, according to the embodiment shown in FIG. 1, a generally rectangular shape, two opposite sides 12, 13 being intended to come opposite the opposite lateral faces 7, 8 of the skirt 4, one side 14 perpendicular to these two sides 12, 13 being intended to come opposite the perpendicular lateral face 9 of the skirt 4, a fourth side 15, opposite the side 14, ending this grid 3 and being intended to come opposite the face 11 of the skirt 4.

Les deux côtés 12 et 13 de cette grille 3 sont constitués chacun par un barreau latéral 16, dont une extrémité 161 est munie, à mi-hauteur sur une face latérale externe de celui-ci, d'un pivot 17, d'axe Y-Y horizontal confondu, quand la grille 3 est montée dans le cadre 1, avec l'axe horizontal X-X des cavités 10 de la jupe 4, ces cavités 10 du cadre 1 étant destinées à recevoir les pivots 17 de la grille 3 qui peut ainsi pivoter autour de l'axe X-X.The two sides 12 and 13 of this grid 3 each consist of a lateral bar 16, one end of which 161 is provided, at mid-height on an external lateral face thereof, with a pivot 17, of axis YY horizontal, when the grid 3 is mounted in the frame 1, with the horizontal axis XX of the cavities 10 of the skirt 4, these cavities 10 of the frame 1 being intended to receive the pivots 17 of the grid 3 which can thus pivot around of axis XX.

Entre ces deux barreaux latéraux 16, la grille 3 est constituée d'une série de barreaux 18, parallèles dans l'exemple de réalisation représenté, chaque barreau 18 étant relié à un barreau adjacent par au moins une entretoise 19.Between these two lateral bars 16, the grid 3 consists of a series of bars 18, parallel in the embodiment shown, each bar 18 being connected to an adjacent bar by at least one spacer 19.

Comme on le voit illustré Fig. 3, chaque barreau latéral 16 est lui aussi relié au barreau 18 qui lui est adjacent par au moins une entretoise 19.As seen in FIG. 3, each lateral bar 16 is also connected to the bar 18 which is adjacent to it by at least one spacer 19.

Les barreaux 18 sont constitués d'une face supérieure 20, définissant la surface supérieure de la grille 3, et d'une face inférieure 21, destinée à venir en contact, à une extrémité 22, respectivement 23, des barreaux 18, avec la collerette d'appui 6 dans sa zone jouxtant la face latérale 9, respectivement 11, de la jupe 4.The bars 18 consist of an upper face 20, defining the upper surface of the grid 3, and of a lower face 21, intended to come into contact, at one end 22, respectively 23, of the bars 18, with the flange support 6 in its zone adjoining the lateral face 9, respectively 11, of the skirt 4.

Comme on le voit Fig.4, la grille 3 étant destinée à être mobile en rotation autour de l'axe X-X du cadre 1, les barreaux latéraux 16, par leur extrémité 161, et les barreaux 18, par leur extrémité 22, étant à proximité immédiate de la collerette d'appui 6 et de la face latérale 9 de la jupe 4, il existe une surface cylindrique théorique S, d'axe X-X et de rayon R par rapport à l'axe X-X du cadre 1, telle que toute partie P de la grille 3 dont le volume dépassera de cette surface théorique S, entrera en contact, lors de la rotation de cette grille 3 autour de l'axe X-X du cadre 1, soit avec la collerette d'appui 6, comme représenté, soit avec la jupe 4.As can be seen in Fig. 4, the grid 3 being intended to be movable in rotation about the axis XX of the frame 1, the lateral bars 16, by their end 161, and the bars 18, by their end 22, being at immediate proximity of the support flange 6 and the side face 9 of the skirt 4, there is a theoretical cylindrical surface S, of axis XX and of radius R relative to the axis XX of the frame 1, such that any part P of the grid 3 whose volume will exceed this theoretical surface S, will come into contact, during the rotation of this grid 3 around the axis XX of the frame 1, either with the support flange 6, as shown, either with the skirt 4.

Comme on le voit Fig.4, le rayon R correspond à la distance minimale entre l'axe X-X des cavités 10 et le cadre 1.As seen in Fig.4, the radius R corresponds to the minimum distance between the axis X-X of the cavities 10 and the frame 1.

Si cette partie P de la grille 3 est totalement rigidement reliée au reste de la grille 3, la rotation ne pourra alors plus se poursuivre, la grille 3 étant prisonnière du cadre 1 par ses pivots 17 dans les cavités 10.If this part P of the grid 3 is completely rigidly connected to the rest of the grid 3, the rotation can no longer continue, the grid 3 being trapped in the frame 1 by its pivots 17 in the cavities 10.

C'est justement une caractéristique de la présente invention que de réaliser une grille 3 constituée, selon l'axe Y-Y de cette grille 3, d'une zone médiane Z1 et de deux zones latérales Z2, la zone médiane Z1 présentant au moins une partie P, située au côté 14 de la grille 3, qui dépasse de cette surface théorique S, la zone médiane Z1 étant reliée élastiquement aux zones latérales Z2 de la grille 3 par des entretoises 191 non situées sur l'axe X-X et jouant le rôle de barres de torsion, la grille 3 étant monobloc et l'élasticité naturelle du matériau constituant la grille 3, par exemple de la fonte à graphite sphéroïdal, étant suffisante.It is precisely a characteristic of the present invention to produce a grid 3 consisting, along the axis YY of this grid 3, of a median zone Z1 and two lateral zones Z2, the median zone Z1 having at least one part P, located on the side 14 of the grid 3, which protrudes from this theoretical surface S, the middle zone Z1 being elastically connected to the lateral zones Z2 of the grid 3 by spacers 191 not located on the axis XX and playing the role of torsion bars, the grid 3 being in one piece and the natural elasticity of the material constituting the grid 3, for example spheroidal graphite cast iron, being sufficient.

Ainsi, quand cette partie P entre en contact avec le cadre 1, la zone médiane Z1 supportant cette partie P étant reliée élastiquement au reste de la grille 3, un couple s'opposant à la rotation de la grille 3 est créé.Thus, when this part P comes into contact with the frame 1, the middle zone Z1 supporting this part P being elastically connected to the rest of the grid 3, a couple opposing the rotation of the grid 3 is created.

Comme on le voit Fig.6, soit C le point de tangence de la surface S avec le cadre 1, soit F le sens de rotation pour l'ouverture de la grille 3, une partie P1 de la zone médiane Z1 d'une grille 3 touchant le cadre 1 en un point C1 situé en aval du point C selon le sens de rotation F et une partie P2 de la zone médiane Z1 d'une grille 3 touchant le cadre 1 en un point C2 situé en amont du point C selon le sens de rotation F, il apparaît clairement qu'une grille 3 munie d'un profil du type P1 sera, au départ, libre en rotation jusqu'à ce que le profil P1 entre en contact avec le cadre 1 alors qu'une grille 3 munie d'un profil de type P2 verra immédiatement ce profil P2 s'opposer à la rotation de la grille 3 autour de l'axe X-X.As seen in Fig. 6, either C the point of tangency of the surface S with the frame 1, or F the direction of rotation for the opening of the grid 3, part P1 of the middle zone Z1 of a grid 3 touching the frame 1 at a point C1 located downstream of the point C in the direction of rotation F and a part P2 of the middle zone Z1 of a grid 3 touching the frame 1 at a point C2 located upstream of the point C according to the direction of rotation F, it clearly appears that a grid 3 provided with a profile of type P1 will, at the start, be free to rotate until the profile P1 comes into contact with the frame 1 while a grid 3 provided with a P2 type profile will immediately see this P2 profile opposing the rotation of the grid 3 around the axis XX.

De plus, pour chaque profil P1, P2, il existe trois points caractéristiques M, M1, M2, le point M correspondant au point du profil P1 ou P2 le plus éloigné de l'axe X-X, les points M1 et M2 correspondant aux deux points d'intersection du profil P1 ou P2 avec la surface S.In addition, for each profile P1, P2, there are three characteristic points M, M1, M2, the point M corresponding to the point of the profile P1 or P2 furthest from the axis XX, the points M1 and M2 corresponding to the two points intersection of profile P1 or P2 with surface S.

On notera que dans le cas d'une grille 3 munie d'un profil P2 tel que décrit Fig.6, le point M2 est confondu avec le point C.It will be noted that in the case of a grid 3 provided with a profile P2 as described in Fig.6, the point M2 is coincident with the point C.

Un grille 3 munie d'une zone médiane Z1 présentant un profil du type P2 est décrite Fig.5.A grid 3 provided with a middle zone Z1 having a profile of type P2 is described in Fig.5.

Il va maintenant être décrit le montage puis le fonctionnement du dispositif selon l'invention.There will now be described the mounting and then the operation of the device according to the invention.

Pour monter une grille 3, muni par exemple d'un profil P1 tel que décrit Fig.4 et Fig.6, dans le cadre 1, il est effectué un pincement de la grille 3 au niveau des extrémités 161 des barreaux latéraux 16.To mount a grid 3, provided for example with a profile P1 as described in Fig.4 and Fig.6, in frame 1, the grid 3 is pinched at the ends 161 of the side bars 16.

Ceci est rendu possible par le fait que la grille est divisée en trois zones, la zone médiane Z1 étant reliée élastiquement aux deux zones latérales Z2, la liaison élastique étant simplement réalisée par une entretoise.This is made possible by the fact that the grid is divided into three zones, the central zone Z1 being elastically connected to the two lateral zones Z2, the elastic connection being simply produced by a spacer.

Ainsi, les pivots 17 de la grille 3 sont placés en regard des orifices 10 du cadre 1 dans lesquels ils pénètrent.Thus, the pivots 17 of the grid 3 are placed opposite the orifices 10 of the frame 1 into which they penetrate.

Lors de cette opération, la grille 3 est verticale.During this operation, the grid 3 is vertical.

Une fois la grille 3 placée verticalement dans le cadre 1, celle ci est mise en rotation autour de l'axe X-X du cadre 1 jusqu'à ce que la partie P de la zone médiane Z1 entre en contact avec le cadre 1, soit au niveau de la collerette d'appui 6 soit au niveau de la face 9 de la jupe 4, au niveau du point de contact M1 correspondant à l'intersection de la courbe S avec le profil de la partie P.Once the grid 3 is placed vertically in the frame 1, it is rotated around the axis XX of the frame 1 until the part P of the middle zone Z1 comes into contact with the frame 1, ie at level of the support flange 6 or at the level of the face 9 of the skirt 4, at the point of contact M1 corresponding to the intersection of the curve S with the profile of the part P.

A partir de cet instant, la zone médiane Z1, par torsion des entretoises 191 qui la relient aux zones latérales Z2, s'écarte du plan défini par les deux zones latérales Z2 en créant ainsi un couple, qui s'oppose à la fermeture de la grille, la partie P frottant contre la surface correspondante du cadre 1 contre laquelle elle s'appuie.From this instant, the central zone Z1, by twisting the spacers 191 which connect it to the lateral zones Z2, deviates from the plane defined by the two lateral zones Z2, thereby creating a torque, which opposes the closing of the grid, the part P rubbing against the corresponding surface of the frame 1 against which it rests.

La grille 3 poursuivant sa rotation, si un effort suffisant lui est appliqué, un couple s'opposant à la rotation de la grille 3 va être produit jusqu'à ce que le point de contact de la partie P avec le cadre 1 corresponde au point M défini ci-avant, correspondant au couple maximum. Ensuite le couple rediminue jusqu'au point M2. A partir de cet instant, il n'y plus de contact entre la partie P de la zone Z1 et le cadre 1.The grid 3 continuing to rotate, if sufficient force is applied to it, a torque opposing the rotation of the grid 3 will be produced until the point of contact of the part P with the frame 1 corresponds to the point M defined above, corresponding to the maximum torque. Then the torque decreases to point M2. From this moment, there is no longer any contact between the part P of the zone Z1 and the frame 1.

Quand on veut ouvrir la grille 3, le même phénomène se produit cette fois ci au niveau du point M2.When we want to open the gate 3, the same phenomenon occurs this time at the point M2.

En effet, la rotation de la grille 3 est libre jusqu'à ce que le point M2 de la zone médiane Z1 entre en contact avec le cadre 1. A partir de cet instant, et jusqu'à ce que le point de contact M1 soit atteint, un couple s'opposant à la rotation de la grille 3 va être créé qui s'oppose donc à l'ouverture de la grille 3.Indeed, the rotation of the grid 3 is free until the point M2 of the middle zone Z1 comes into contact with the frame 1. From this moment, and until the contact point M1 is reached, a couple opposing the rotation of the grid 3 will be created which therefore opposes the opening of the grid 3.

Dans une variante de réalisation de l'invention la grille 3 est précontrainte. C'est ainsi que, en appui sur les surfaces correspondantes du cadre 1, la grille présente une partie médiane Z1 en appui par sa partie P sur la collerette d'appui 6, cet appui étant réalisé pour que les entretoises 191 qui relient la zone médiane Z1 aux deux parties latérales Z2 soient en torsion en exerçant un couple qui s'oppose, dès le départ quand la grille 3 repose sur le cadre 1, à la rotation de la grille 3.In an alternative embodiment of the invention, the grid 3 is prestressed. Thus, when resting on the corresponding surfaces of the frame 1, the grid has a middle part Z1 resting by its part P on the support flange 6, this support being produced so that the spacers 191 which connect the zone middle Z1 to the two lateral parts Z2 are in torsion by exerting a torque which opposes, from the start when the grid 3 rests on the frame 1, the rotation of the grid 3.

Ainsi, le dispositif de couronnement d'une cheminée d'évacuation selon l'invention permet, d'une part le verrouillage de la grille dans son cadre en position fermée et permet d'autre part, d'éviter une fermeture intempestive quand la grille est en position verticale.Thus, the crowning device of an evacuation chimney according to the invention makes it possible, on the one hand, to lock the grid in its frame in the closed position and, on the other hand, to prevent inadvertent closing when the grid is in vertical position.

Claims (2)

  1. Device for capping a discharge shaft, comprising a grating (3) of generally rectangular shape, articulated in a frame (1) of generally rectangular shape along an axis Y-Y of pivoting of the grating (3) which corresponds to one of the sides of the latter and coincides with an axis X-X parallel to one of the sides (9) of the frame (1) when the grating (3) is mounted in the frame (1), this grating (3) being equipped with bars (18) connected to one another by means of spacers (19), characterized in that the grating (3) is divided, along its axis of pivoting, into a middle part (Z1) and two lateral parts (Z2) connected resiliently to the middle part (Z1) by means of spacers (191) which are not located on the axis X-X and which perform the function of torsion bars, one end of the middle part (Z1) adjacent to the axis of pivoting being intended to come to bear against a corresponding surface of the frame (1) while exerting a torque opposing movement of the grating (3) about its axis of pivoting.
  2. Device according to Claim 1, characterized in that, when the grating (3) bears on the corresponding surfaces of the frame (1), its middle part (Z1) bears on a bearing rim (6) of the frame (1), this bearing being effected such that the spacers (191) connecting the said middle part (Z1) to the two lateral parts (Z2) experience torsion while exerting a torque which, from the outset when the grating (3) rests on the frame (1), opposes rotation of the grating (3).
EP90470052A 1989-09-29 1990-09-21 Apparatus for capping a manhole Expired - Lifetime EP0420778B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90470052T ATE88523T1 (en) 1989-09-29 1990-09-21 DEVICE FOR COVERING A MANHOLE MANHOLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912938 1989-09-29
FR8912938A FR2652606B1 (en) 1989-09-29 1989-09-29 METHOD AND APPARATUS FOR CROWNING AN EVACUATION CHIMNEY.

Publications (2)

Publication Number Publication Date
EP0420778A1 EP0420778A1 (en) 1991-04-03
EP0420778B1 true EP0420778B1 (en) 1993-04-21

Family

ID=9386060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90470052A Expired - Lifetime EP0420778B1 (en) 1989-09-29 1990-09-21 Apparatus for capping a manhole

Country Status (11)

Country Link
EP (1) EP0420778B1 (en)
AT (1) ATE88523T1 (en)
DD (2) DD298145A5 (en)
DE (1) DE69001415T2 (en)
DK (1) DK0420778T3 (en)
ES (1) ES2036160T3 (en)
FR (1) FR2652606B1 (en)
GR (1) GR3007683T3 (en)
IE (1) IE63970B1 (en)
NO (1) NO177506C (en)
PT (1) PT95443B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8192110B1 (en) * 2009-03-10 2012-06-05 Bryant Donald W Yard storm drain emitter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119836A (en) * 1982-01-29 1983-11-23 Brickhouse Dudley Mfg Manhole cover or grating and frame assemblies

Also Published As

Publication number Publication date
PT95443A (en) 1992-06-30
DD298146A5 (en) 1992-02-06
EP0420778A1 (en) 1991-04-03
DK0420778T3 (en) 1993-05-17
NO904180L (en) 1991-04-02
IE903496A1 (en) 1991-04-10
ES2036160T1 (en) 1993-05-16
ATE88523T1 (en) 1993-05-15
NO177506C (en) 1997-12-29
IE63970B1 (en) 1995-06-28
ES2036160T3 (en) 1993-10-16
PT95443B (en) 1998-06-30
NO177506B (en) 1995-06-19
DE69001415D1 (en) 1993-05-27
FR2652606A1 (en) 1991-04-05
DE69001415T2 (en) 1993-07-29
NO904180D0 (en) 1990-09-26
DD298145A5 (en) 1992-02-06
FR2652606B1 (en) 1991-12-13
GR3007683T3 (en) 1993-08-31

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