EP1440916B1 - Closing device for Manhole as well as tank with such manhole - Google Patents

Closing device for Manhole as well as tank with such manhole Download PDF

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Publication number
EP1440916B1
EP1440916B1 EP04364002A EP04364002A EP1440916B1 EP 1440916 B1 EP1440916 B1 EP 1440916B1 EP 04364002 A EP04364002 A EP 04364002A EP 04364002 A EP04364002 A EP 04364002A EP 1440916 B1 EP1440916 B1 EP 1440916B1
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EP
European Patent Office
Prior art keywords
manhole
cover
lid
closure device
closed position
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
EP04364002A
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German (de)
French (fr)
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EP1440916A1 (en
Inventor
Luc Maisonneuve
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Maisonneuve
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Maisonneuve
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Publication of EP1440916A1 publication Critical patent/EP1440916A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/10—Manholes; Inspection openings; Covers therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • B65D90/34—Venting means

Definitions

  • the invention relates to a device for closing a manhole cistern, and a tank provided with such a device.
  • cargo tanks such as foodstuffs such as water, milk, wine, glucose, chocolate, fruit juice or chemicals such as acids, solvents, bases, petroleum products such as gas oil, fuel oil or bitumen, or waste.
  • foodstuffs such as water, milk, wine, glucose, chocolate, fruit juice or chemicals
  • acids such as acids, solvents, bases
  • petroleum products such as gas oil, fuel oil or bitumen, or waste.
  • the manhole is usually located at the top of the tank and a cover is provided on the manhole to close it.
  • butterfly type nuts or levers are provided at the edge of the manhole in a manner accessible to a person so that it can fix the lid on the manhole in the closed position or away from it for opening, as needed.
  • the lid is opened to inspect, clean, ventilate, fill or drain the inside of the tank and then close the lid.
  • the invention aims to obtain a device for closing a manhole tank, and a tank provided with such a device, which overcome the drawbacks inherent in the state of the art and make it possible to secure the closure the cover of the manhole.
  • a first object of the invention is a device for closing a manhole tank according to the characterizing part of claim 1.
  • the person authorized to operate the lid has the ability to close and interlock without having to move to the manhole, which saves him from climbing and descending the tank, with the risk of falling that entails.
  • the crack allows the contents of the tank to be vented to the atmosphere and may be necessary when liquid from the tank is drawn through an orifice other than the manhole and located at the bottom of the tank, in order to avoid a depression in the tank, likely to destroy it.
  • the cracking may also be necessary when filling the tank with liquid through a hole other than the manhole and located at the bottom of the tank, to avoid overpressure in the tank.
  • the invention saves the authorized person manipulations of butterfly type nuts or levers for closing, opening and cracking, which are tedious and take a long time.
  • the invention prevents unauthorized opening and opening of the lid by a person accessing it using manual means.
  • a second object of the invention is a cistern comprising at least one compartment intended to contain a volume of materials, the compartment being provided on its upper part with a manhole, on which is immobilized a closure device for the man as described above.
  • control means is for example provided in a place accessible by a person on the ground.
  • the closure device 1 is intended to be fixed on a manhole 2 provided at the top of a cistern not shown.
  • a manhole 2 is provided for each compartment of the tank, as is known.
  • the manhole 2 has for example a vertical circular cylindrical wall having a free upper edge 3.
  • the outer wall 5 On the wall of the manhole 2 is fixed, for example by welding or the like, a bottom 4 of drip pan, the outer wall 5 also comprises an outer axis 6 of articulation in rotation with a hood 7 mobile drip tray and a free outer edge 8 of complementary shape of the outer free edge 9 of the cover 7 and for example flat and circular.
  • the bottom 4 and the cover 7 are for example circular contour and metal, such as stainless steel.
  • the bottom 4 has in the lower part an orifice 4a connected to a pipe 4b for discharging liquid, as is known.
  • the wall of the manhole 2 is connected to an outer support 2a of an outer axis 10 of articulation in rotation with a support 11a of a mobile manhole cover 11 having an outer edge 12 of form complementary to that of the edge 3 of the manhole and for example plan.
  • the cover 11 In the closed position of the lid 11, shown in FIG. figure 1 , the cover 11 is folded over the edge 3 of the manhole 2 and sealing means provided on the edge 12 of the cover are applied on the edge 3 of the manhole 2, so as to prevent the passage of fluid , liquid or particles through the manhole 2 in one direction or the other between the tank and the outside of the manhole 2.
  • the cover 11 and the cover 7 are rotated by an opening angle greater than 90 ° with respect to their closed position to allow, for example, the passage of a person or a tool in the manhole 2 for example for inspection or cleaning of the tank or manhole 2.
  • a means for driving the cover 11 by moving the cover 7 is provided to make the closing position of the cover 7 coincide with that of the cover 7 and for the movement of the cover 7 from the closed position to the open position. also that of the lid 11, as well as the displacement of the cover 7 from the open position to the closed position also drives that of the lid 11.
  • the hinge axis 10 has a clearance with respect to the support 2a of the hole 2 or the support 11a of the cover 11, so that during the closing movement of the manhole 2, it is firstly the portion of the edge 12 close to the axis 10 which is applied to the edge 3 of the manhole 2, then that by spacing the supports 2a and 11a is the entire edge 12 which is applied on the edge 3.
  • the axis 10 is for example housed in an oblong hole 10a of the support 11a and / or support 2a, directed parallel to the direction arrival of the cover 11 on the manhole 2 in the closed position, that is to say perpendicular to the plane of the edge 3 in the example shown.
  • the oblong hole 10a is provided only in the support 11a.
  • This drive means comprises one or more arms 13, and for example as shown in a single arm, which is articulated at a first end by an axis 14 of rotation with two transverse reinforcements 15, 16 of the cover 7, fixed under this one. ci and which is articulated at a second end remote from the first with an ear 18 fixed on the top of the cover 11 by an axis 17 of rotation remote from the axis 10 and for example diametrically opposite.
  • the axes 6, 10, 14 and 18 are parallel to each other and for example horizontal.
  • the drive means may furthermore comprise one or more push-buttons 13b fixed under the cover 7 at a distance from its axis 6.
  • the pusher 13b is positioned above the cover 11 and at a distance from its axis 10 to push it towards the closing position during the displacement of the cracking position in the closed position, together with the arm 13.
  • the pusher 13b is for example formed of a stud screwed into a tube integral with the reinforcements 15, 16 or the cover 7.
  • a body 19 in which is guided a part 20 actuating the cover 7 between one and the other of a first actuating position corresponding to the closed position and a second actuating position corresponding to a half-open position.
  • the body 19 is connected by any suitable means to a control means of the actuating part 20 by the user.
  • a control means of the actuating part 20 In the case of a jack as an actuating member, the connection between the body 19 and the control means is provided by pneumatic or hydraulic lines, whereas in the case of an electromagnet as a part 20 actuation, the connection between the body 19 and the control means is provided by electrical conductors.
  • the control means is provided at a distance from the cover 11 and the cover 7 to move the actuating member 20 from the second position to the first position and hold the actuating member 20 in this second position to block the second position. cover 7 and the cover 11 in the closed position.
  • the control means is also adapted to move the actuating part 20 from the first position to the second position and to hold the actuating part 20 in this second position, in order to pass the cover 11 and the cover 7 into the second position.
  • the control means is for example located lower than the manhole on the tank, in a place accessible to a person on the ground and for example positioned at shoulder height.
  • This control means is for example a station or a control box with an access door open and locked by the authorized person and control buttons behind the door.
  • the actuating part 20 is formed by a jack, for example pneumatic, but can also be hydraulic.
  • the actuator 20 may also be electromagnetically displaced, for example by an electromagnet or other means.
  • the half-open position of the figure 2 corresponding to a low angular position of the cover 7 relative to its closed position, for example less than 10 ° and for example between 3 and 4 ° allows to provide a passage between the cover 7 and the bottom 4 and to lift, by means of the drive means, the edge 12 of the cover 11 above the edge 3 of the manhole 2 to provide a passage between them.
  • the actuating part 20 is guided relative to the bottom 4 in a rectilinear stroke having a component perpendicular to the plane of the edge 3 of the manhole 2 or, as shown, in a rectilinear stroke perpendicular to this plane, to be more away from the body 19 in the second position corresponding to the half-open position only in the first position.
  • the body 19 is fixed, and for example screwed, in a protective housing 21 itself sealingly secured inside the bottom 4 and for example formed of sheets.
  • the actuating part 20 is connected to the cover 7 by means of a removable connecting member accessible in the half-open position and located in the closed compartment formed by the cover 7 and the bottom 4 in the closed position.
  • the actuating member 20 comprises a pin 22 perpendicular to the plane of the edge 3 and connected to a shoulder 23 located outside the body 19 during the guide stroke and transverse thereto.
  • the shoulder 23 is inserted, according to the guide stroke, between first and second stops 24, 25 integral with the cover 7 and diametrically opposite the axis 6.
  • the first stop 24 serves to move the cover 7 and the cover 11 by the shoulder 23 from the crenellation position to the closed position and is located below the shoulder 23, while the second stop 25 serves to move the cover 7 and the cover 11 by the shoulder 23 of the closing position at the half-open position and holding it in the half-open position and is located above the shoulder 23.
  • the upper stop 25 is formed by a bar fixed to the reinforcements 15, 16 of the cover 7 and the lower stop 24 is formed on the connecting member.
  • the bottom stop 24 is formed by a piece operating in the manner of a clothespin, which comprises two jaws 26, 27 arranged face to face around the spindle 22 and mounted to rotate around bolts 28, 29 for attachment to a support 30 integral with the cover 7.
  • a means 31 for prestressing the jaws 26, 27 in an engagement position, in which they surround the pin 22 and form the lower stop 24, is provided.
  • the prestressing means 31 is formed for example by a compression spring 32 mounted between two tabs 33, 34 extending the jaws 26, 27 beyond the bolts 28, 29. Grip means 35, 36 are provided on the legs.
  • the means 35, 36 gripping means are for example formed by the end portion of the tabs 33, 34, located near the edge 9 and bent towards the bottom 4 to project from the plane of the edge 9 of the cover 7.
  • the operation of the closure device is as follows.
  • the action of the user on the control means causes the displacement of the actuating part 20 from the second position to the first position, which raises through the shoulder 23 the abutment 25 and rotates the cover 7 about the axis 6 and the cover 11 about the axis 10 to their half-open position.
  • the inside of the manhole 2 and the tank is thus vented without requiring the lid 11 and the hood 7 to be fully open and without the user having to go himself to the tank. near the manhole 2.
  • a new action of the user on the control means causes the movement of the actuating part 20 from the first position to the second position.
  • the shoulder 23 returns the stop 24 to the bottom 4 and rotates the cover 7 about the axis 6 and the cover 11 about the axis 10 to their closed position.
  • the cover 7 and, via the drive means, the cover 7 are locked in the closed position, as long as the user no longer acts on the control means.
  • a physical obstacle, formed by the cover 7 and the bottom 4 is then present in the closed position around the means for moving the cover 11, which prevents an unauthorized person to access and manipulate fraudulently.
  • the latter has the possibility of grasping the gripping means of the connecting member through the passage formed between the cover 7 and the bottom 4 to disengage the jaws 24, 25. If the user simultaneously raises the cover 7, for example by means of a handle 37 attached to the outside of the cover 7 and at a distance from its axis 6, the jaws 24, 25 apart are passed over the shoulder 23, which allows to separate the cover 7 of the actuating part 20. The user continues to lift the cover 7 then has the possibility of tilting to the full open position.
  • the user wishing to close the manhole 2 first returns the cover 7 to the actuating part 20 and grasps the gripping means of the connecting member through the passage formed between the cover 7 and the bottom 4 to disengage the jaws 24, 25, which causes the jaws 24, 25 to move apart around the shoulder 23 and around the spindle 22, to arrive at the half-open position.
  • the user then acts on the control means to move to the closed position, as described above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The device has a body (19) immobilized with respect to a manhole (2) in an open base (4). An actuation piece (20) is guided in a direction between activating positions corresponding to closure and half-closure positions by a control unit. A cover (7) is applied against an opening of the base to form a closed compartment in which a cover movement in a half opened positions forms a passage between the cover and base. An Independent claim is also included for a cistern.

Description

L'invention concerne un dispositif de fermeture d'un trou d'homme de citerne, ainsi qu'une citerne munie d'un tel dispositif.The invention relates to a device for closing a manhole cistern, and a tank provided with such a device.

Un domaine d'application de l'invention est les citernes de transport de marchandises, telles que des denrées alimentaires comme par exemple l'eau, le lait, le vin, le glucose, le chocolat, le jus de fruits ou des produits chimiques tels que des acides, des solvants, des bases, des produits pétroliers tels que du gas-oil, du fuel ou du bitume, ou des déchets. Ces citernes sont montées sur un camion par exemple à demeure ou sous la forme d'une semi-remorque.One field of application of the invention is cargo tanks, such as foodstuffs such as water, milk, wine, glucose, chocolate, fruit juice or chemicals such as acids, solvents, bases, petroleum products such as gas oil, fuel oil or bitumen, or waste. These tanks are mounted on a truck for example permanently or in the form of a semi-trailer.

Le trou d'homme est habituellement situé au sommet de la citerne et un couvercle est prévu sur le trou d'homme pour le fermer. Dans une réalisation connue, des écrous du type papillon ou des leviers sont prévus au bord du trou d'homme de manière accessible à une personne pour qu'elle puisse fixer le couvercle sur le trou d'homme en position fermée ou l'en éloigner pour l'ouverture, selon les besoins.The manhole is usually located at the top of the tank and a cover is provided on the manhole to close it. In a known embodiment, butterfly type nuts or levers are provided at the edge of the manhole in a manner accessible to a person so that it can fix the lid on the manhole in the closed position or away from it for opening, as needed.

Par exemple, on ouvre le couvercle pour inspecter, nettoyer, aérer, remplir ou vidanger l'intérieur de la citerne et on referme ensuite le couvercle.For example, the lid is opened to inspect, clean, ventilate, fill or drain the inside of the tank and then close the lid.

La manoeuvre du couvercle ne va cependant pas sans présenter des inconvénients.Maneuvering the lid, however, does not come without disadvantages.

En effet, le danger est grand que la personne qui doit se rendre au bord du trou d'homme pour manoeuvrer le couvercle tombe de la citerne malgré l'échelle et la rambarde escamotable prévues pour la montée et la descente de la personne.Indeed, the danger is great that the person who must go to the edge of the manhole to maneuver the lid falls from the tank despite the ladder and retractable railing provided for the rise and descent of the person.

Le document US A 4 327 522 décrit un dispositif de fermeture d'un trou d'homme selon le préambule de la revendication 1.The document US A 4,327,522 discloses a device for closing a manhole according to the preamble of claim 1.

En outre, il subsiste le risque que le couvercle, dûment fermé par la personne autorisée, soit reouvert de manière non autorisée par une personne malveillante. Par précaution, ce risque est à éviter, particulièrement si la citerne doit contenir des denrées alimentaires ou des produits par nature dangereux.In addition, there is a risk that the cover, properly closed by the authorized person, may be unauthorized re-opened by an attacker. As a precaution, this risk is to be avoided, especially if the tank must contain foodstuffs or products that are inherently dangerous.

L'invention vise à obtenir un dispositif de fermeture d'un trou d'homme de citerne, ainsi qu'une citerne munie d'un tel dispositif, qui pallient les inconvénients inhérents à l'état de la technique et permettent de sécuriser la fermeture du couvercle du trou d'homme.The invention aims to obtain a device for closing a manhole tank, and a tank provided with such a device, which overcome the drawbacks inherent in the state of the art and make it possible to secure the closure the cover of the manhole.

A cet effet, un premier objet de l'invention est un dispositif de fermeture d'un trou d'homme de citerne selon la partie caractérisant de la revendication 1.For this purpose, a first object of the invention is a device for closing a manhole tank according to the characterizing part of claim 1.

Grâce à l'invention, la personne autorisée à manoeuvrer le couvercle a la possibilité de le fermer et de l'entrebâiller sans être obligée de se déplacer jusqu'au trou d'homme, ce qui lui épargne d'escalader et de redescendre de la citerne, avec les risques de chute que cela comporte. L'entrebâillement permet de mettre à l'atmosphère le contenu de la citerne et peut être nécessaire lorsque l'on aspire du liquide de la citerne par un orifice autre que le trou d'homme et situé en bas de la citerne, afin d'éviter une dépression dans la citerne, susceptible de la détruire. L'entrebâillement peut être également nécessaire lorsque l'on remplit de liquide la citerne par un orifice autre que le trou d'homme et situé en bas de la citerne, afin d'éviter une surpression dans la citerne. En outre, l'invention épargne à la personne autorisée des manipulations d'écrous du type papillon ou de leviers pour la fermeture, l'ouverture et l'entrebâillement, qui sont fastidieuses et prennent beaucoup de temps. L'invention empêche l'ouverture et l'entrebâillement non autorisés du couvercle par une personne y accédant se servant de moyens manuels.Thanks to the invention, the person authorized to operate the lid has the ability to close and interlock without having to move to the manhole, which saves him from climbing and descending the tank, with the risk of falling that entails. The crack allows the contents of the tank to be vented to the atmosphere and may be necessary when liquid from the tank is drawn through an orifice other than the manhole and located at the bottom of the tank, in order to avoid a depression in the tank, likely to destroy it. The cracking may also be necessary when filling the tank with liquid through a hole other than the manhole and located at the bottom of the tank, to avoid overpressure in the tank. In addition, the invention saves the authorized person manipulations of butterfly type nuts or levers for closing, opening and cracking, which are tedious and take a long time. The invention prevents unauthorized opening and opening of the lid by a person accessing it using manual means.

Suivant d'autres caractéristiques de l'invention,

  • le moyen de déplacement comporte au moins un vérin ;
  • ou le moyen de déplacement comporte au moins un organe de déplacement du couvercle actionné électromagnétiquement par le moyen de commande ;
  • le fond et le capot sont ceux d'un bac à égouttures situé autour du trou d'homme ;
  • la pièce d'actionnement est reliée au moyen d'entraînement du couvercle par l'intermédiaire d'un organe de liaison amovible accessible en position d'entrebâillement et se trouvant dans ledit compartiment en position de fermeture ;
  • l'organe de liaison de la pièce d'actionnement avec le moyen d'entraînement comporte :
    • un moyen d'enclenchement avec une partie correspondante prévue sur la pièce d'actionnement,
    • un moyen de précontrainte du moyen d'enclenchement dans une position d'enclenchement avec ladite partie correspondante, permettant la liaison entre le moyen d'entraînement et la pièce d'actionnement, le moyen d'enclenchement étant apte à passer à l'encontre des moyens de précontrainte à une position de désenclenchement, dans laquelle le moyen d'entraînement est apte à être séparé de la pièce d'actionnement, et
    • des moyens de préhension du moyen d'enclenchement, accessibles dans la position d'entrebâillement pour le faire passer dans la position de désenclenchement ;
  • la pièce d'actionnement comporte une broche raccordée à un épaulement extérieur au corps et se trouvant, suivant la course de guidage, entre une première butée de déplacement du capot de la position d'entrebâillement à la position de fermeture et une deuxième butée de déplacement du capot de la position de fermeture à la position d'entrebâillement ;
  • la première butée de déplacement est formée sur le moyen d'enclenchement de l'organe de liaison ;
  • le moyen d'enclenchement comprend deux mâchoires montées mobiles en rotation sur un support solidaire du capot entre l'une et l'autre des positions d'enclenchement et de désenclenchement, pour entourer la broche et former la première butée de déplacement en position d'enclenchement, et pour être écartées de la broche et ménager un passage pour l'épaulement en position de désenclenchement, le moyen de précontrainte comprend un ressort de compression monté entre deux pattes de prolongement des mâchoires au-delà des axes de rotation des mâchoires et les moyens de préhension sont prévus sur les pattes ;
  • le capot est articulé par un axe de rotation au fond, le couvercle comporte un support extérieur articulé par un axe de rotation à un support immobilisé à l'extérieur du trou d'homme et le moyen d'entraînement comprend au moins un bras reliant le capot au couvercle à distance de leurs axes de rotation et lui-même articulé en rotation par rapport au capot et au couvercle ;
  • l'axe d'articulation du couvercle possède un jeu par rapport au support du trou d'homme et/ou par rapport au support du couvercle, de manière à ce que le moyen d'entraînement applique totalement le bord de fermeture du couvercle sur le bord correspondant du trou d'homme lors du passage de la position d'entrebâillement à la position de fermeture ;
  • l'axe d'articulation du couvercle est logé dans un trou oblong du support du trou d'homme et/ou du support du couvercle, le trou oblong étant dirigé suivant la direction d'arrivée du couvercle sur le trou d'homme en position de fermeture ;
  • le moyen d'entraînement comprend au moins un poussoir fixé au capot à distance de son axe de rotation et agencé pour pousser le couvercle jusqu'à la position de fermeture ;
  • le moyen de commande est situé dans un poste de commande distant du couvercle et comportant une porte d'accès ouverte et fermée à clé.
According to other features of the invention,
  • the displacement means comprises at least one jack;
  • or the displacement means comprises at least one cover displacement member actuated electromagnetically by the control means;
  • the bottom and hood are those of a drip tray located around the manhole;
  • the actuating piece is connected to the drive means of the cover via a removable connecting member accessible in half-open position and being in said compartment in the closed position;
  • the connecting member of the actuating part with the driving means comprises:
    • an engagement means with a corresponding part provided on the actuating part,
    • a biasing means of the engagement means in an engagement position with said corresponding part, allowing the connection between the drive means and the actuating piece, the engagement means being adapted to pass against the prestressing means at a disengaging position, wherein the driving means is adapted to be separated from the actuating part, and
    • means for gripping the engagement means, accessible in the half-open position to move it into the disengaging position;
  • the actuating member comprises a pin connected to a shoulder outside the body and being, according to the guide stroke, between a first stop of movement of the cover from the half-open position to the closed position and a second displacement stop from the cover from the closed position to the half-open position;
  • the first displacement stop is formed on the engagement means of the connecting member;
  • the engagement means comprises two jaws mounted rotatably on a support secured to the cover between the one and the other of the engagement and disengagement positions, to surround the spindle and form the first displacement stop in the position of engagement, and to be spaced from the spindle and to provide a passage for the shoulder in the disengaged position, the prestressing means comprises a compression spring mounted between two jaw extension tabs beyond the axes of rotation of the jaws and the gripping means are provided on the legs;
  • the cover is articulated by an axis of rotation at the bottom, the cover comprises an outer support articulated by an axis of rotation to a support immobilized outside the manhole and the drive means comprises at least one arm connecting the cover to cover away from their axes of rotation and itself articulated in rotation relative to the cover and the lid;
  • the axis of articulation of the cover has a clearance with respect to the support of the manhole and / or with respect to the support of the cover, so that the drive means completely applies the closing edge of the cover to the corresponding edge of the manhole when passing from the cracking position to the closed position;
  • the axis of articulation of the lid is housed in an oblong hole of the support of the manhole and / or of the lid support, the oblong hole being directed in the direction of arrival of the lid on the manhole in position closure;
  • the drive means comprises at least one pusher attached to the cover away from its axis of rotation and arranged to push the cover to the closed position;
  • the control means is located in a control station remote from the cover and having an access door open and locked.

Un deuxième objet de l'invention est une citerne comportant au moins un compartiment destiné à contenir un volume de matières, le compartiment étant muni sur sa partie supérieure d'un trou d'homme, sur lequel est immobilisé un dispositif de fermeture du trou d'homme tel que décrit ci-dessus.A second object of the invention is a cistern comprising at least one compartment intended to contain a volume of materials, the compartment being provided on its upper part with a manhole, on which is immobilized a closure device for the man as described above.

Sur la citerne, le moyen de commande est par exemple prévu en un endroit accessible par une personne au sol.On the tank, the control means is for example provided in a place accessible by a person on the ground.

L'invention sera mieux comprise à la lecture de la description qui va suivre d'un mode de réalisation donné uniquement à titre d'exemple non limitatif en référence aux dessins annexés, sur lesquels :

  • la figure 1 représente schématiquement en coupe transversale verticale le dispositif de fermeture suivant l'invention en position de fermeture ;
  • la figure 2 représente schématiquement en coupe transversale verticale le dispositif de fermeture suivant l'invention en position d'entrebâillement ;
  • la figure 3 représente schématiquement en coupe transversale verticale le dispositif de fermeture suivant l'invention en position d'ouverture complète ;
  • la figure 4 représente schématiquement en coupe transversale horizontale le dispositif de fermeture suivant l'invention en position de fermeture ; et
  • la figure 5 représente schématiquement en coupe transversale horizontale une partie du dispositif de fermeture suivant l'invention, dans une position d'enclenchement.
The invention will be better understood on reading the following description of an embodiment given solely by way of nonlimiting example with reference to the appended drawings, in which:
  • the figure 1 schematically represents in vertical cross section the closing device according to the invention in the closed position;
  • the figure 2 schematically represents in vertical cross-section the closure device according to the invention in half-open position;
  • the figure 3 schematically represents in vertical cross section the closure device according to the invention in the fully open position;
  • the figure 4 schematically shows in horizontal cross section the closing device according to the invention in the closed position; and
  • the figure 5 schematically represents in horizontal cross-section a part of the closure device according to the invention, in a latching position.

Aux figures, le dispositif 1 de fermeture est destiné à être fixé sur un trou d'homme 2 prévu au sommet d'une citerne non représentée. Un trou d'homme 2 est prévu pour chaque compartiment de la citerne, ainsi que cela est connu. Le trou d'homme 2 a par exemple une paroi cylindrique circulaire verticale ayant un bord supérieur 3 libre.In the figures, the closure device 1 is intended to be fixed on a manhole 2 provided at the top of a cistern not shown. A manhole 2 is provided for each compartment of the tank, as is known. The manhole 2 has for example a vertical circular cylindrical wall having a free upper edge 3.

Sur la paroi du trou d'homme 2 est fixé, par exemple par soudure ou autres, un fond 4 de bac à égouttures, dont la paroi extérieure 5 comporte également un axe extérieur 6 d'articulation en rotation avec un capot 7 mobile de bac à égouttures et un bord extérieur libre 8 de forme complémentaire du bord extérieur libre 9 du capot 7 et par exemple plan et circulaire. Le fond 4 et le capot 7 sont par exemple à contour circulaire et métalliques, tel qu'en acier inoxydable. Le fond 4 comporte en partie basse un orifice 4a raccordée à une conduite 4b d'évacuation de liquide, ainsi que cela est connu.On the wall of the manhole 2 is fixed, for example by welding or the like, a bottom 4 of drip pan, the outer wall 5 also comprises an outer axis 6 of articulation in rotation with a hood 7 mobile drip tray and a free outer edge 8 of complementary shape of the outer free edge 9 of the cover 7 and for example flat and circular. The bottom 4 and the cover 7 are for example circular contour and metal, such as stainless steel. The bottom 4 has in the lower part an orifice 4a connected to a pipe 4b for discharging liquid, as is known.

En outre, la paroi du trou d'homme 2 est raccordée à un support extérieur 2a d'un axe extérieur 10 d'articulation en rotation avec un support 11a d'un couvercle 11 mobile de trou d'homme ayant un bord extérieur 12 de forme complémentaire de celle du bord 3 du trou d'homme et par exemple plan.In addition, the wall of the manhole 2 is connected to an outer support 2a of an outer axis 10 of articulation in rotation with a support 11a of a mobile manhole cover 11 having an outer edge 12 of form complementary to that of the edge 3 of the manhole and for example plan.

Dans la position de fermeture du couvercle 11, représentée à la figure 1, le couvercle 11 est rabattu sur le bord 3 du trou d'homme 2 et des moyens d'étanchéité prévus sur le bord 12 du couvercle sont appliqués sur le bord 3 du trou d'homme 2, de manière à empêcher le passage de fluide, de liquide ou de particules par le trou d'homme 2 dans un sens ou dans l'autre entre la citerne et l'extérieur du trou d'homme 2.In the closed position of the lid 11, shown in FIG. figure 1 , the cover 11 is folded over the edge 3 of the manhole 2 and sealing means provided on the edge 12 of the cover are applied on the edge 3 of the manhole 2, so as to prevent the passage of fluid , liquid or particles through the manhole 2 in one direction or the other between the tank and the outside of the manhole 2.

Dans la position de fermeture du capot 7, représentée à la figure 1, le capot 7 est rabattu sur le fond 4 de bac à égouttures et le bord 9 se trouve appliqué face au bord 8, de manière à former un compartiment clos délimité par le fond 4 et le capot 7 du bac à égouttures.In the closed position of the cover 7, shown in FIG. figure 1 , the cover 7 is folded down on the bottom 4 drip tray and the edge 9 is applied facing the edge 8, so as to form a closed compartment defined by the bottom 4 and the cover 7 of the drip tray.

Dans la position d'ouverture totale de la figure 3, le couvercle 11 et le capot 7 sont tournés d'un angle d'ouverture supérieur à 90° par rapport à leur position de fermeture pour permettre par exemple le passage d'une personne ou d'un outil dans le trou d'homme 2, par exemple à des fins d'inspection ou de nettoyage de la citerne ou du trou d'homme 2.In the fully open position of the figure 3 , the cover 11 and the cover 7 are rotated by an opening angle greater than 90 ° with respect to their closed position to allow, for example, the passage of a person or a tool in the manhole 2 for example for inspection or cleaning of the tank or manhole 2.

Un moyen d'entraînement du couvercle 11 par déplacement du capot 7 est prévu pour faire coïncider la position de fermeture du capot 7 avec celle du couvercle 7 et pour que le déplacement du capot 7 de la position de fermeture à la position d'ouverture entraîne également celui du couvercle 11, de même que le déplacement du capot 7 de la position d'ouverture à la position de fermeture entraîne également celui du couvercle 11. L'axe 10 d'articulation possède un jeu par rapport au support 2a du trou d'homme 2 ou au support 11a du couvercle 11, pour que lors du mouvement de fermeture du trou d'homme 2, ce soit d'abord la partie du bord 12 proche de l'axe 10 qui soit appliquée sur le bord 3 du trou d'homme 2, puis que par écartement des supports 2a et 11a ce soit la totalité du bord 12 qui soit appliqué sur le bord 3. A cet effet, l'axe 10 est par exemple logé dans un trou oblong 10a du support 11a et/ou du support 2a, dirigé parallèlement à la direction d'arrivée du couvercle 11 sur le trou d'homme 2 en position de fermeture, c'est-à-dire perpendiculairement au plan du bord 3 dans l'exemple représenté. Par exemple dans l'exemple représenté, le trou oblong 10a est prévu seulement dans le support 11a.A means for driving the cover 11 by moving the cover 7 is provided to make the closing position of the cover 7 coincide with that of the cover 7 and for the movement of the cover 7 from the closed position to the open position. also that of the lid 11, as well as the displacement of the cover 7 from the open position to the closed position also drives that of the lid 11. The hinge axis 10 has a clearance with respect to the support 2a of the hole 2 or the support 11a of the cover 11, so that during the closing movement of the manhole 2, it is firstly the portion of the edge 12 close to the axis 10 which is applied to the edge 3 of the manhole 2, then that by spacing the supports 2a and 11a is the entire edge 12 which is applied on the edge 3. For this purpose, the axis 10 is for example housed in an oblong hole 10a of the support 11a and / or support 2a, directed parallel to the direction arrival of the cover 11 on the manhole 2 in the closed position, that is to say perpendicular to the plane of the edge 3 in the example shown. For example in the example shown, the oblong hole 10a is provided only in the support 11a.

Ce moyen d'entraînement comprend un ou plusieurs bras 13, et par exemple ainsi que représenté un seul bras, qui est articulé en une première extrémité par un axe 14 de rotation avec deux renforts 15, 16 transversaux du capot 7, fixés sous celui-ci et qui est articulé en une deuxième extrémité éloignée de la première avec une oreille 18 fixée sur le dessus du couvercle 11 par un axe 17 de rotation éloigné de l'axe 10 et par exemple diamétralement opposé. Les axes 6, 10, 14 et 18 sont parallèles entre eux et par exemple horizontaux.This drive means comprises one or more arms 13, and for example as shown in a single arm, which is articulated at a first end by an axis 14 of rotation with two transverse reinforcements 15, 16 of the cover 7, fixed under this one. ci and which is articulated at a second end remote from the first with an ear 18 fixed on the top of the cover 11 by an axis 17 of rotation remote from the axis 10 and for example diametrically opposite. The axes 6, 10, 14 and 18 are parallel to each other and for example horizontal.

Le moyen d'entraînement peut comprendre par ailleurs en renforcement un ou plusieurs poussoirs 13b fixés sous le capot 7 à distance de son axe 6. Le poussoir 13b est positionné au-dessus du couvercle 11 et à distance de son axe 10 pour le pousser vers la position de fermeture lors du déplacement de la position d'entrebâillement à la position de fermeture, conjointement avec le bras 13. Le poussoir 13b est par exemple formé d'un plot vissé dans un tube solidaire des renforts 15, 16ou du capot 7.The drive means may furthermore comprise one or more push-buttons 13b fixed under the cover 7 at a distance from its axis 6. The pusher 13b is positioned above the cover 11 and at a distance from its axis 10 to push it towards the closing position during the displacement of the cracking position in the closed position, together with the arm 13. The pusher 13b is for example formed of a stud screwed into a tube integral with the reinforcements 15, 16 or the cover 7.

Par ailleurs, dans le fond 4 est fixé un corps 19 dans lequel est guidé une pièce 20 d'actionnement du capot 7 entre l'une et l'autre d'une première position d'actionnement correspondant à la position de fermeture et d'une deuxième position d'actionnement correspondant à une position d'entrebâillement.Furthermore, in the bottom 4 is fixed a body 19 in which is guided a part 20 actuating the cover 7 between one and the other of a first actuating position corresponding to the closed position and a second actuating position corresponding to a half-open position.

Le corps 19 est relié par tout moyen approprié à un moyen de commande de la pièce 20 d'actionnement par l'utilisateur. Dans le cas d'un vérin en tant que pièce 20 d'actionnement, la liaison entre le corps 19 et le moyen de commande est assurée par des conduites pneumatiques ou hydrauliques, tandis que dans le cas d'un électroaimant en tant que pièce 20 d'actionnement, la liaison entre le corps 19 et le moyen de commande est assurée par des conducteurs électriques. Le moyen de commande est prévu à distance du couvercle 11 et du capot 7 pour faire se déplacer la pièce 20 d'actionnement de la deuxième position à la première position et maintenir la pièce 20 d'actionnement dans cette deuxième position, afin de bloquer le capot 7 et le couvercle 11 dans la position de fermeture. Le moyen de commande est également apte à faire se déplacer la pièce 20 d'actionnement de la première position à la deuxième position et maintenir la pièce 20 d'actionnement dans cette deuxième position, afin de faire passer le couvercle 11 et le capot 7 dans la position d'entrebâillement. Le moyen de commande est par exemple situé plus bas que le trou d'homme sur la citerne, en un endroit accessible à une personne au sol et par exemple positionné à hauteur d'épaule. Ce moyen de commande est par exemple un poste ou un coffre de commande comportant une porte d'accès ouverte et fermée à clé par la personne autorisée et des boutons de commande derrière la porte.The body 19 is connected by any suitable means to a control means of the actuating part 20 by the user. In the case of a jack as an actuating member, the connection between the body 19 and the control means is provided by pneumatic or hydraulic lines, whereas in the case of an electromagnet as a part 20 actuation, the connection between the body 19 and the control means is provided by electrical conductors. The control means is provided at a distance from the cover 11 and the cover 7 to move the actuating member 20 from the second position to the first position and hold the actuating member 20 in this second position to block the second position. cover 7 and the cover 11 in the closed position. The control means is also adapted to move the actuating part 20 from the first position to the second position and to hold the actuating part 20 in this second position, in order to pass the cover 11 and the cover 7 into the second position. the half-open position The control means is for example located lower than the manhole on the tank, in a place accessible to a person on the ground and for example positioned at shoulder height. This control means is for example a station or a control box with an access door open and locked by the authorized person and control buttons behind the door.

Aux figures, la pièce 20 d'actionnement est formée par un vérin, par exemple pneumatique mais pouvant également être hydraulique. En variante, la pièce 20 d'actionnement peut également être déplacée électromagnétiquement, par exemple par un électroaimant ou d'autres moyens.In the figures, the actuating part 20 is formed by a jack, for example pneumatic, but can also be hydraulic. Alternatively, the actuator 20 may also be electromagnetically displaced, for example by an electromagnet or other means.

La position d'entrebâillement de la figure 2, correspondant à une position angulaire faible du capot 7 par rapport à sa position de fermeture, inférieure par exemple à 10° et par exemple comprise entre 3 et 4° permet de ménager un passage entre le capot 7 et le fond 4 et de soulever, par l'intermédiaire du moyen d'entraînement, le bord 12 du couvercle 11 au-dessus du bord 3 du trou d'homme 2 pour ménager un passage entre eux.The half-open position of the figure 2 , corresponding to a low angular position of the cover 7 relative to its closed position, for example less than 10 ° and for example between 3 and 4 ° allows to provide a passage between the cover 7 and the bottom 4 and to lift, by means of the drive means, the edge 12 of the cover 11 above the edge 3 of the manhole 2 to provide a passage between them.

La pièce 20 d'actionnement est guidée par rapport au fond 4 suivant une course rectiligne ayant une composante perpendiculaire au plan du bord 3 du trou d'homme 2 ou, ainsi que représenté, suivant une course rectiligne perpendiculaire à ce plan, pour être plus éloignée du corps 19 dans la deuxième position correspondant à la position d'entrebâillement que dans la première position.The actuating part 20 is guided relative to the bottom 4 in a rectilinear stroke having a component perpendicular to the plane of the edge 3 of the manhole 2 or, as shown, in a rectilinear stroke perpendicular to this plane, to be more away from the body 19 in the second position corresponding to the half-open position only in the first position.

Le corps 19 est fixé, et par exemple vissé, dans un carter de protection 21 lui-même fixé de manière étanche à l'intérieur du fond 4 et par exemple formé de tôles.The body 19 is fixed, and for example screwed, in a protective housing 21 itself sealingly secured inside the bottom 4 and for example formed of sheets.

La pièce 20 d'actionnement est reliée au capot 7 par l'intermédiaire d'un organe de liaison amovible accessible en position d'entrebâillement et se trouvant dans le compartiment clos formé par le capot 7 et le fond 4 en position de fermeture.The actuating part 20 is connected to the cover 7 by means of a removable connecting member accessible in the half-open position and located in the closed compartment formed by the cover 7 and the bottom 4 in the closed position.

La pièce 20 d'actionnement comporte une broche 22 perpendiculaire au plan du bord 3 et raccordée à un épaulement 23 se trouvant à l'extérieur du corps 19 au cours de la course de guidage et transversal à celle-ci.The actuating member 20 comprises a pin 22 perpendicular to the plane of the edge 3 and connected to a shoulder 23 located outside the body 19 during the guide stroke and transverse thereto.

L'épaulement 23 est inséré, suivant la course de guidage, entre des première et deuxième butées 24, 25 solidaires du capot 7 et diamétralement opposées à l'axe 6. La première butée 24 sert au déplacement du capot 7 et du couvercle 11 par l'épaulement 23 de la position d'entrebâillement à la position de fermeture et est située au-dessous de l'épaulement 23, tandis que la deuxième butée 25 sert au déplacement du capot 7 et du couvercle 11 par l'épaulement 23 de la position de fermeture à la position d'entrebâillement et à son maintien dans la position d'entrebâillement et est située au-dessus de l'épaulement 23.The shoulder 23 is inserted, according to the guide stroke, between first and second stops 24, 25 integral with the cover 7 and diametrically opposite the axis 6. The first stop 24 serves to move the cover 7 and the cover 11 by the shoulder 23 from the crenellation position to the closed position and is located below the shoulder 23, while the second stop 25 serves to move the cover 7 and the cover 11 by the shoulder 23 of the closing position at the half-open position and holding it in the half-open position and is located above the shoulder 23.

Dans l'exemple représenté, la butée supérieure 25 est formée par un barreau fixé aux renforts 15, 16 du capot 7 et la butée inférieure 24 est formée sur l'organe de liaison.In the example shown, the upper stop 25 is formed by a bar fixed to the reinforcements 15, 16 of the cover 7 and the lower stop 24 is formed on the connecting member.

Dans l'exemple représenté, la butée inférieure 24 est formée par une pièce fonctionnant à la manière d'une pince à linges, qui comporte deux mâchoires 26, 27 disposées face à face autour de la broche 22 et montées mobiles en rotation autour de boulons 28, 29 de fixation à un support 30 solidaire du capot 7. Un moyen 31 de précontrainte des mâchoires 26, 27 dans une position d'enclenchement, dans laquelle elles entourent la broche 22 et forment la butée inférieure 24, est prévu. Le moyen 31 de précontrainte est formé par exemple par un ressort 32 de compression monté entre deux pattes 33, 34 de prolongement des mâchoires 26, 27 au-delà des boulons 28, 29. Des moyens 35, 36 de préhension sont prévus sur les pattes 33, 34 pour être accessibles dans la position d'entrebâillement et pour faire passer les mâchoires dans une position de désenclenchement d'avec la broche 22 et l'épaulement 23, dans laquelle les mâchoires 26, 27 sont écartées l'une de l'autre à l'encontre du moyen 31 de précontrainte pour pouvoir laisser passer entre elles la broche 22 et l'épaulement 23. Les moyens 35, 36 de préhension sont par exemple formés par la partie d'extrémité des pattes 33, 34, située à proximité du bord 9 et coudée vers le fond 4 pour faire saillie du plan du bord 9 du capot 7.In the example shown, the bottom stop 24 is formed by a piece operating in the manner of a clothespin, which comprises two jaws 26, 27 arranged face to face around the spindle 22 and mounted to rotate around bolts 28, 29 for attachment to a support 30 integral with the cover 7. A means 31 for prestressing the jaws 26, 27 in an engagement position, in which they surround the pin 22 and form the lower stop 24, is provided. The prestressing means 31 is formed for example by a compression spring 32 mounted between two tabs 33, 34 extending the jaws 26, 27 beyond the bolts 28, 29. Grip means 35, 36 are provided on the legs. 33, 34 to be accessible in the half-open position and to move the jaws into a disengaging position with pin 22 and the shoulder 23, in which the jaws 26, 27 are spaced from each other against the prestressing means 31 in order to be able to pass between them the pin 22 and the shoulder 23. The means 35, 36 gripping means are for example formed by the end portion of the tabs 33, 34, located near the edge 9 and bent towards the bottom 4 to project from the plane of the edge 9 of the cover 7.

Le fonctionnement du dispositif de fermeture est le suivant.The operation of the closure device is as follows.

Si l'on suppose que le couvercle 11 se trouve initialement en position de fermeture, l'action de l'utilisateur sur les moyens de commande provoque le déplacement de la pièce 20 d'actionnement de la deuxième position à la première position, qui soulève par l'intermédiaire de l'épaulement 23 la butée 25 et fait tourner le capot 7 autour de l'axe 6 et le couvercle 11 autour de l'axe 10 jusqu'à leur position d'entrebâillement. L'intérieur du trou d'homme 2 et de la citerne est ainsi mis à l'atmosphère, sans nécessiter d'ouverture totale du couvercle 11 et du capot 7 et sans que l'utilisateur ait à se rendre lui-même sur la citerne à proximité du trou d'homme 2.If it is assumed that the cover 11 is initially in the closed position, the action of the user on the control means causes the displacement of the actuating part 20 from the second position to the first position, which raises through the shoulder 23 the abutment 25 and rotates the cover 7 about the axis 6 and the cover 11 about the axis 10 to their half-open position. The inside of the manhole 2 and the tank is thus vented without requiring the lid 11 and the hood 7 to be fully open and without the user having to go himself to the tank. near the manhole 2.

Une nouvelle action de l'utilisateur sur les moyens de commande provoque le déplacement de la pièce 20 d'actionnement de la première position à la deuxième position. Lors de ce déplacement, l'épaulement 23 ramène la butée 24 vers le fond 4 et fait tourner le capot 7 autour de l'axe 6 et le couvercle 11 autour de l'axe 10 jusqu'à leur position de fermeture. Le capot 7 et, par l'intermédiaire des moyens d'entraînement, le couvercle 7 sont bloqués dans la position de fermeture, tant que l'utilisateur n'agit plus sur les moyens de commande. Un obstacle physique, formé par le capot 7 et le fond 4, est alors présent en position de fermeture autour des moyens servant au déplacement du couvercle 11, ce qui empêche à une personne non autorisée d'y accéder et de les manipuler frauduleusement.A new action of the user on the control means causes the movement of the actuating part 20 from the first position to the second position. During this movement, the shoulder 23 returns the stop 24 to the bottom 4 and rotates the cover 7 about the axis 6 and the cover 11 about the axis 10 to their closed position. The cover 7 and, via the drive means, the cover 7 are locked in the closed position, as long as the user no longer acts on the control means. A physical obstacle, formed by the cover 7 and the bottom 4, is then present in the closed position around the means for moving the cover 11, which prevents an unauthorized person to access and manipulate fraudulently.

Si, en position d'entrebâillement, l'utilisateur n'agit pas sur les moyens de commande, celui-ci a la possibilité de saisir les moyens de préhension de l'organe de liaison au travers du passage ménagé entre le capot 7 et le fond 4 pour désenclencher les mâchoires 24, 25. Si l'utilisateur soulève en même temps le capot 7, par exemple à l'aide d'une poignée 37 fixée à l'extérieur du capot 7 et à distance de son axe 6, les mâchoires 24, 25 écartées sont passées au-dessus de l'épaulement 23, ce qui permet de séparer le capot 7 de la pièce 20 d'actionnement. L'utilisateur continuant de soulever le capot 7 a alors possibilité de le faire basculer jusqu'à la position d'ouverture totale.If, in the half-open position, the user does not act on the control means, the latter has the possibility of grasping the gripping means of the connecting member through the passage formed between the cover 7 and the bottom 4 to disengage the jaws 24, 25. If the user simultaneously raises the cover 7, for example by means of a handle 37 attached to the outside of the cover 7 and at a distance from its axis 6, the jaws 24, 25 apart are passed over the shoulder 23, which allows to separate the cover 7 of the actuating part 20. The user continues to lift the cover 7 then has the possibility of tilting to the full open position.

En position d'ouverture totale, l'utilisateur souhaitant fermer le trou d'homme 2 ramène d'abord le capot 7 vers la pièce 20 d'actionnement et saisit les moyens de préhension de l'organe de liaison au travers du passage ménagé entre le capot 7 et le fond 4 pour désenclencher les mâchoires 24, 25, ce qui fait descendre les mâchoires 24, 25 écartées autour de l'épaulement 23 puis autour de la broche 22, pour arriver à la position d'entrebâillement. L'utilisateur agit alors sur les moyens de commande pour passer à la position de fermeture, de la manière décrite ci-dessus.In the fully open position, the user wishing to close the manhole 2 first returns the cover 7 to the actuating part 20 and grasps the gripping means of the connecting member through the passage formed between the cover 7 and the bottom 4 to disengage the jaws 24, 25, which causes the jaws 24, 25 to move apart around the shoulder 23 and around the spindle 22, to arrive at the half-open position. The user then acts on the control means to move to the closed position, as described above.

Claims (16)

  1. A closure device for the manhole of a tank, that includes:
    - a lid (11) designed for closure of the manhole (2),
    - means for fixing the lid (11) in the closed position of the manhole (2),
    where the fixing means include:
    - a means (20) for moving the lid (11) in relation to the manhole (2) between a locked closed position of the manhole (2) and a position that is at least half open in relation to the manhole (2), and
    - a means for controlling the movement means (20) to at least the closed and half-open positions, and that is located away from the lid (11),
    characterised in that the movement means (20) include:
    - a body (19) that is immobilised in relation to the manhole (2) in an open bottom (4),
    - a cover (7),
    - at least one actuating part (20) that is guided in relation to the body (19) along a trajectory that is controlled by the control means between first and second actuating positions corresponding to the closed and half-open positions respectively, and
    - a means (15, 16) to drive the lid (11), from the actuating part (20) and by means of the cover (7), between the closed and half-open positions, so that in the closed position of the lid (11), the cover (7) is applied against the opening in the bottom (4) to form, with the latter, a closed compartment in which the movement means (20) and the lid (11) are located, and that in the half open position, a passage is present between the cover (7) and the bottom (4).
  2. A closure device according to claim 1, characterised in that the movement means (20) include at least one jack or actuator.
  3. A closure device according to any of the previous claims, characterised in that the movement means (20) include at least one component for moving the lid (11), which is operated electromagnetically by the control means.
  4. A closure device according to any of the previous claims, characterised in that the bottom (4) and the cover (7) are those of a drip channel located around the manhole (2).
  5. A closure device according to any of the previous claims, characterised in that the actuating part (20) is connected to the drive means (15, 16) of the lid (11) by means of a removable linking component that is accessible in the half open position, and located in the said compartment in the closed position.
  6. A closure device according to claim 5, characterised in that the component connecting the actuating part (20) to the drive means (15, 16) include:
    - a means (26, 27) to interlock with a corresponding part (22) arranged on the actuating part (20),
    - a means (31) for pre-stressing the interlocking means (26, 27) in a position of interlock with the said corresponding part (22), allowing connection between the drive means (15, 16) and the actuating part (20), with the interlocking means (26, 27) being designed to pass against the prestressing means (31) to a de-interlocked position, in which the drive means (15, 16) are designed to be separated from the actuating part (20), and
    - means (35, 36) for grasping the interlocking means (26, 27), that are accessible in the half open position in order to pass them to the de-interlocked position.
  7. A closure device according to any of the previous claims, characterised in that the actuating part (20) includes a pin (22) connected to a shoulder (23) outside the body (19) and located, on the guidance trajectory, between a first end-stop (24) for moving the cover (7) from the half open position to the closed position, and a second end-stop (25) for moving the cover (7) from the closed position to the half open position.
  8. A closure device according to claims 6 and 7, characterised in that the first movement end-stop (24) is formed on the interlocking means (26, 27) of the connecting component.
  9. A closure device according to claim 8, characterised in that the interlocking means (26, 27) include two jaws (26, 27) mounted to move in rotation on a support (30) attached to the cover (7) between the interlocked and de-interlocked positions, to surround the pin (22) and form the first movement end-stop (24) in the interlock position, and to be moved away from the pin (22) and to create a passage for the shoulder (23) into a de-interlocked position, the pre-stressing means (31) includes a compression spring (32) mounted between two brackets (33, 34) for extending the jaws (26, 27) beyond the axes of rotation (28, 29) of the jaws (26, 27), and the grasping means (35, 36) are provided on the brackets (33, 34).
  10. A closure device according to any of the previous claims, characterised in that the cover (7) is articulated by an axis of rotation (6) to the bottom (4), the lid (11) includes an outside support (11a) articulated by an axis of rotation (10) to a support (2a) that is immobilised on the outside of the manhole (2), and the drive means include at least one arm (13) connecting the cover (7) to the lid (11) away from their axes (6, 10) of rotation and itself articulated in rotation in relation to the cover (7) and to the lid (11).
  11. A closure device according to claim 10, characterised in that the axis (10) of articulation of the lid (11) has some play in relation to the support (2a) of the manhole (2) and/or in relation to the support (11a) of the lid (11), so that the drive means totally applies the closure edge (9) of the lid (11) onto the corresponding edge (3) of the manhole (2) during passage from the half open position to the closed position.
  12. A closure device according to claim 11, characterised in that the axis (10) of articulation of the lid (11) is housed in an oblong hole (10a) of the support (2a) of the manhole (2) and/or of the support (11a) of the lid (11), with the oblong hole (10a) being directed along the direction of arrival of the lid (11) on the manhole (2) in the closed position.
  13. A closure device according to any of the previous claims, characterised in that the drive means include at least one push button (13b) attached to the cover (7) away from its axis (6) of rotation and arranged to push the lid (11) into the closed position.
  14. A closure device according to any of the previous claims, characterised in that the control means are located at a control position away from the lid (11) and that includes an open access door that is lockable.
  15. A tank with at least one compartment that is intended to contain a volume of materials, where the compartment is equipped in its upper part with a manhole (2), on which a device (1) for closure of the manhole (2) is immobilised according to any of the previous claims.
  16. A fuel tanker according to claim 15, characterised in that the control means are provided in a position that is accessible by a person standing on the ground.
EP04364002A 2003-01-24 2004-01-21 Closing device for Manhole as well as tank with such manhole Expired - Lifetime EP1440916B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0300770 2003-01-24
FR0300770A FR2850365B1 (en) 2003-01-24 2003-01-24 DEVICE FOR CLOSING A HOLE OF TANKER AND CISTERN PROVIDED WITH THE SAME

Publications (2)

Publication Number Publication Date
EP1440916A1 EP1440916A1 (en) 2004-07-28
EP1440916B1 true EP1440916B1 (en) 2008-12-10

Family

ID=32524998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04364002A Expired - Lifetime EP1440916B1 (en) 2003-01-24 2004-01-21 Closing device for Manhole as well as tank with such manhole

Country Status (4)

Country Link
EP (1) EP1440916B1 (en)
AT (1) ATE417006T1 (en)
DE (1) DE602004018205D1 (en)
FR (1) FR2850365B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009053359B4 (en) * 2009-11-17 2019-10-31 Peter Reitinger Explosion protection flap
CN111071644B (en) * 2020-02-24 2024-09-10 江苏金诺化工装备有限公司 Anti-climbing storage tank
CN111810632B (en) * 2020-07-14 2024-09-10 中核武汉核电运行技术股份有限公司 Secondary side manhole closing device of steam generator
CN112234490B (en) * 2020-10-21 2022-11-22 国网山西省电力公司阳泉供电公司 Auxiliary device for electric power system maintenance

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733750A (en) * 1971-12-20 1973-05-22 S Hege Air release lid
FR2446200A1 (en) * 1979-01-12 1980-08-08 Magyar Sa G Ventilation of empty tanker vehicles - has bracket keeping tanker manhole cover half open
US4327522A (en) * 1979-11-13 1982-05-04 Westeel-Rosco Limited Assembly for actuation of openable closure lid
DE8712199U1 (en) * 1987-09-09 1987-11-26 Rietbergwerke GmbH & Co KG, 33397 Rietberg Storage containers, especially for used oil or similar hazardous waste
FR2656286B1 (en) * 1989-12-26 1992-06-26 Ets Magyar ANTI-PRESSURE DEVICE FOR THE COMPARTMENTS OF A ROAD TANK.
FR2665146B1 (en) * 1990-07-25 1994-06-17 Ets Magyar DEVICE FOR LOCKING THE HOODS OF DRIP TRAYS OF A ROAD TANK.

Also Published As

Publication number Publication date
FR2850365A1 (en) 2004-07-30
DE602004018205D1 (en) 2009-01-22
ATE417006T1 (en) 2008-12-15
FR2850365B1 (en) 2005-09-30
EP1440916A1 (en) 2004-07-28

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