EP1440916A1 - 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
EP1440916A1
EP1440916A1 EP04364002A EP04364002A EP1440916A1 EP 1440916 A1 EP1440916 A1 EP 1440916A1 EP 04364002 A EP04364002 A EP 04364002A EP 04364002 A EP04364002 A EP 04364002A EP 1440916 A1 EP1440916 A1 EP 1440916A1
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EP
European Patent Office
Prior art keywords
cover
manhole
closing
closure device
engagement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04364002A
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German (de)
French (fr)
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EP1440916B1 (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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Publication of EP1440916B1 publication Critical patent/EP1440916B1/en
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    • 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 of tank, as well as a tank fitted with such a device.
  • One field of application of the invention is the transport tanks goods, such as foodstuffs such as water, milk, wine, glucose, chocolate, fruit juice or chemicals such as acids, solvents, bases, petroleum products such as diesel, fuel 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 diesel, fuel 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 hole accessible to a person so that they can fix the cover on the manhole in the closed position or remove it for opening, as required.
  • the invention aims to obtain a device for closing a hole tank man, as well as a tank fitted with such a device, which overcomes the disadvantages inherent in the state of the art and make it possible to secure the closing the manhole cover.
  • the person authorized to operate the cover has the possibility of closing and ajar it without having to move to the manhole, which saves him from climbing and descending from the tank, with the risk of falling that this involves.
  • the crack allows vent the contents of the tank and may be necessary when draws liquid from the tank through an orifice other than the manhole and located in bottom of the tank, to avoid a depression in the tank, likely to destroy.
  • the crack may also be necessary when filling with liquid the tank through an orifice other than the manhole and located at the bottom of the tank, to avoid overpressure in the tank.
  • the invention spares the person authorized to handle butterfly-type nuts or levers for closing, opening and opening, which are tedious and take a lot of time.
  • the invention prevents opening and partially opening authorized from the cover by a person accessing it using manual means.
  • a second object of the invention is a tank comprising at least a compartment intended to contain a volume of materials, the compartment being provided on its upper part with a manhole, on which is immobilized a manhole closing device as described above.
  • control means is for example provided in one 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 tank 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 upper edge 3 free.
  • a drip tray bottom 4 On the wall of the manhole 2 is fixed, for example by welding or others, a drip tray bottom 4, the outer wall 5 of which also has an outer axis 6 of articulation in rotation with a movable cover 7 from tank to drips and a free outside edge 8 of complementary shape to the outside edge free 9 of the cover 7 and for example plan and circular.
  • the bottom 4 and the cover 7 are by example with circular and metallic contours, such as stainless steel.
  • the bottom 4 comprises 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 a support. outside 2a of an outer axis 10 of articulation in rotation with a support 11a a movable manhole cover 11 having an outer edge 12 of shape complementary to that of the edge 3 of the manhole and for example a plane.
  • the cover 7 In the closed position of the cover 7, shown in FIG. 1, the cover 7 is folded over the bottom 4 of the drip tray and the edge 9 is applied facing the edge 8, so as to form a closed compartment delimited by the bottom 4 and cover 7 of the drip tray.
  • the cover 11 and the cover 7 are rotated by an opening angle greater than 90 ° relative to their closed position to allow for example the passage of a person or of a tool in the manhole 2, for example for inspection or cleaning the tank or manhole 2.
  • a means of 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 so that the movement of the cover 7 from the closed position to the open position also causes that of the cover 11, as well as the movement of the cover 7 from the open position to the closed position also drives that of the cover 11.
  • the hinge pin 10 has a clearance relative to the support 2a of the manhole 2 or to the support 11a of the cover 11, so that during the closing movement of the manhole 2, it is first the part of the edge 12 close to the axis 10 which is applied to the edge 3 of the hole of man 2, then that by spacing of the supports 2a and 11a it is the entire edge 12 which is applied to edge 3.
  • the axis 10 is for example housed in an oblong hole 10a of the support 11a and / or of the support 2a, directed parallel to the direction of arrival of the cover 11 on the manhole 2 in the position of closing, i.e. perpendicular to the plane of edge 3 in the example represented.
  • the oblong hole 10a is provided only in support 11a.
  • This drive means comprises one or more arms 13, and by example as shown only one arm, which is articulated at a first end by an axis 14 of rotation with two reinforcements 15, 16 transverse of the cover 7, fixed under it and which is articulated in a second end distant from the first with an ear 18 fixed on the top of the cover 11 by an axis 17 of rotation distant from the axis 10 and for example diametrically opposite.
  • Axes 6, 10, 14 and 18 are parallel to each other and for example horizontal.
  • the drive means may further include reinforcement one or more pushers 13b fixed under the cover 7 at a distance from its axis 6.
  • the pusher 13b is positioned above the cover 11 and away from its axis 10 to push it towards the closed position when moving the half-open position to 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 cover 7.
  • a body 19 in which is guided a part 20 for actuating the cover 7 between one and the other of a first actuation position corresponding to the closed position and a second actuation position corresponding to a half-open position.
  • the body 19 is connected by any suitable means to a means of control of the actuation part 20 by the user.
  • a means of control of the actuation part 20 by the user.
  • the connection between the body 19 and the means of control is ensured by pneumatic or hydraulic lines, while in the case of an electromagnet as an actuating part, 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 from the cover 7 for move the actuating part 20 from the second position to the first position and maintain the actuating part 20 in this second position, so to block the cover 7 and the cover 11 in the closed position.
  • Way to control is also able to move the part 20 for actuating the first position to the second position and hold the actuating part 20 in this second position, in order to pass the cover 11 and the cover 7 into the half-open position.
  • the control means is for example located more lower than the manhole on the tank, in a location accessible to a person floor and for example positioned at shoulder height.
  • This control means is by example a control station or box with an open access door and locked by the authorized person and control buttons behind the door.
  • the actuating part 20 is formed by a jack, by pneumatic example but can also be hydraulic. Alternatively, the actuating part 20 can also be moved electromagnetically, by example by an electromagnet or other means.
  • the actuating part 20 is guided relative to the following bottom 4 a straight course having a component perpendicular to the plane of the edge 3 of the manhole 2 or, as shown, in a straight course perpendicular to this plane, to be further from the body 19 in the second position corresponding to the half-open position as in the first position.
  • the body 19 is fixed, and for example screwed, in a protective casing 21 itself tightly fixed inside the bottom 4 and for example formed of sheets.
  • the actuating part 20 is connected to the cover 7 via a removable connecting member accessible in the ajar position and located in the closed compartment formed by the cover 7 and the bottom 4 in the position closing.
  • the actuating part 20 comprises a perpendicular pin 22 in the plane of the edge 3 and connected to a shoulder 23 located outside the body 19 during the guide travel and transverse thereto.
  • the shoulder 23 is inserted, along 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 is used to move the cover 7 and the cover 11 by the shoulder 23 from the half-open position to the position of closure and is located below the shoulder 23, while the second stop 25 is used to move the cover 7 and the cover 11 through the shoulder 23 of the closed position at the half-open position and maintained 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 liaison body.
  • the lower stop 24 is formed by a part functioning like a clothespin, which has two jaws 26, 27 arranged face to face around the spindle 22 and mounted movable in rotation around bolts 28, 29 for fixing to a support 30 secured to the cover 7.
  • a means 31 of prestressing of the jaws 26, 27 in an engaged 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 legs 33, 34 of extension of the jaws 26, 27 beyond the bolts 28, 29.
  • Means 35, 36 for gripping are provided on the legs 33, 34 to be accessible in the half-open position and to pass the jaws in a disengaged position with pin 22 and the shoulder 23, in which the jaws 26, 27 are spaced from one another at against the prestressing means 31 in order to allow the passage between them pin 22 and the shoulder 23.
  • the gripping means 35, 36 are for example formed by the end portion of the legs 33, 34, located near the edge 9 and angled towards the bottom 4 to project from the plane of the edge 9 of the cover 7.
  • the operation of the closing 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 the stop 25 through the shoulder 23 and makes turn cover 7 around axis 6 and cover 11 around axis 10 until their half-open position.
  • the interior of manhole 2 and the tank is thus vented, without requiring total opening of the cover 11 and the cover 7 and without the user having to go himself to the nearby tank manhole 2.
  • a new user action on the control means causes the movement of the actuating part 20 from the first position to the second position.
  • the shoulder 23 brings the stop 24 towards the bottom 4 and rotates the cover 7 around the axis 6 and the cover 11 around axis 10 to their closed position.
  • the cover 7 and, through 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 barrier physical, formed by the cover 7 and the bottom 4 is then present in the position of closure around the means for moving the cover 11, which prevents an unauthorized person from accessing and handling them fraudulently.
  • the user does not act on the means command, it has the possibility of entering the gripping means of the connecting member through the passage formed between the cover 7 and the bottom 4 for disengage the jaws 24, 25. If the user raises the cover at the same time 7, for example using a handle 37 fixed 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 makes it possible to separate the cover 7 from the actuating part 20. The user continuing to lift the cover 7 then has the possibility of tilting it until the fully open position.
  • the user wishing to close the hole man 2 first brings the cover 7 to the actuating part 20 and grasps the means for gripping the connecting member through the passage formed between the cover 7 and bottom 4 to disengage the jaws 24, 25, which lowers the jaws 24, 25 spread around the shoulder 23 then around the spindle 22, to reach the half-open position. The user then acts on the means to switch to the closed position, as described above.

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 of tank, as well as a tank fitted 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 the transport tanks goods, such as foodstuffs such as water, milk, wine, glucose, chocolate, fruit juice or chemicals such as acids, solvents, bases, petroleum products such as diesel, fuel or bitumen, or waste. These tanks are mounted on a truck by 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 an achievement known, butterfly type nuts or levers are provided at the edge of the hole accessible to a person so that they can fix the cover on the manhole in the closed position or remove it for opening, as required.

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, we open the lid to inspect, clean, ventilate, fill or empty the inside of the tank and then close the cover.

La manoeuvre du couvercle ne va cependant pas sans présenter des inconvénients.The operation of the cover is not, however, without presenting 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 manhole for maneuvering the cover falls from the tank despite the scale and the retractable guardrail provided for raising and lowering the person.

En outre, il subsiste le risque que le couvercle, dûment fermé par la personne autorisée, soit rouvert 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 remains the risk that the cover, duly closed by the authorized person, or reopened in an unauthorized manner by a person malicious. As a precaution, this risk should be avoided, particularly if the tank is to contain food 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 hole tank man, as well as a tank fitted with such a device, which overcomes the disadvantages inherent in the state of the art and make it possible to secure the closing the manhole cover.

A cet effet, un premier objet de l'invention est un dispositif de fermeture d'un trou d'homme de citerne, comportant :

  • un couvercle adapté à la fermeture du trou d'homme,
  • des moyens de fixation du couvercle en position de fermeture du trou d'homme,
caractérisé en ce que les moyens de fixation comprennent :
  • un moyen de déplacement du couvercle par rapport au trou d'homme entre l'une et l'autre d'une position de fermeture bloquée du trou d'homme et d'une position au moins d'entrebâillement par rapport au trou d'homme, et
  • un moyen de commande du moyen de déplacement au moins de l'une à l'autre des positions de fermeture et d'entrebâillement, situé à distance du couvercle.
To this end, a first object of the invention is a device for closing a tank manhole, comprising:
  • a cover suitable for closing the manhole,
  • means for fixing the cover in the closed position of the manhole,
characterized in that the fixing means comprise:
  • means for moving the cover relative to the manhole between them from a locked closed position of the manhole and from at least one partially open position relative to the manhole , and
  • means for controlling the means of movement at least from one to the other of the closed and half-open positions, located at a distance from the cover.

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 cover has the possibility of closing and ajar it without having to move to the manhole, which saves him from climbing and descending from the tank, with the risk of falling that this involves. The crack allows vent the contents of the tank and may be necessary when draws liquid from the tank through an orifice other than the manhole and located in bottom of the tank, to avoid a depression in the tank, likely to destroy. The crack may also be necessary when filling with liquid the tank through an orifice other than the manhole and located at the bottom of the tank, to avoid overpressure in the tank. Furthermore, the invention spares the person authorized to handle butterfly-type nuts or levers for closing, opening and opening, which are tedious and take a lot of time. The invention prevents opening and partially opening authorized from the cover 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 moyen de déplacement comporte :
  • un corps immobilisé à l'extérieur du trou d'homme,
  • au moins une pièce d'actionnement guidée par rapport au corps suivant une course commandée par le moyen de commande entre l'une et l'autre de première et deuxième positions d'actionnement correspondant respectivement aux positions de fermeture et d'entrebâillement, et
  • un moyen pour entraíner, à partir de la pièce d'actionnement, le couvercle entre l'une et l'autre des positions de fermeture et d'entrebâillement ;
  • le corps est monté dans un fond béant immobilisé par rapport au trou d'homme et le moyen d'entraínement est raccordé à un capot, de telle sorte qu'en position de fermeture du couvercle le capot soit appliqué contre l'ouverture du fond pour former avec celui-ci un compartiment clos dans lequel se trouvent le moyen de déplacement et le couvercle et qu'en position d'entrebâillement un passage soit présent entre le capot et le fond ;
  • 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'entraínement 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'entraínement 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'entraínement 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'entraínement 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'entraínement 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'entraínement 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'entraínement 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 movement means comprises at least one member for moving the cover electromagnetically actuated by the control means;
  • the means of movement comprises:
  • a body immobilized outside the manhole,
  • at least one actuating part guided relative to the body along a stroke controlled by the control means between one and the other of first and second actuating positions corresponding respectively to the closed and partially open positions, and
  • means for driving, from the actuating part, the cover between one and the other of the closed and ajar positions;
  • the body is mounted in a gaping bottom immobilized relative to the manhole and the drive means is connected to a cover, so that in the closed position of the cover the cover is applied against the opening of the bottom for forming with it a closed compartment in which the displacement means and the cover are located and that in the partially open position a passage is present between the cover and the bottom;
  • the bottom and cover are those of a drip tray located around the manhole;
  • the actuating part is connected by means of driving the cover by means of a removable connecting member accessible in the ajar position and being in said compartment in the closed position;
  • the connecting member of the actuating part with the drive means comprises:
  • a means of engagement with a corresponding part provided on the actuating part,
  • a means of prestressing the engagement means in an engagement position with said corresponding part, allowing the connection between the drive means and the actuating part, the engagement means being able to pass against the prestressing means to an disengaged position, in which the drive means is capable of being separated from the actuating part, and
  • means for gripping the latching means, accessible in the half-open position for passing it into the disengage position;
  • the actuating part comprises a pin connected to a shoulder external to the body and lying, according to the guide stroke, between a first displacement stop 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 latching means comprises two jaws mounted mobile in rotation on a support integral with the cover between one and the other of the latching and latching positions, to surround the spindle and form the first displacement stop in the position of engagement, and to be spaced from the spindle and 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 external 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 the cover at a distance from their axes of rotation and itself articulated in rotation relative to the cover and to the cover;
  • the hinge pin of the cover has a clearance relative to the support of the manhole and / or relative to the support of the cover, so that the drive means fully applies the closing edge of the cover on the corresponding edge of the manhole when passing from the partially open position to the closed position;
  • the hinge pin of the cover is housed in an oblong hole of the manhole support and / or of the cover support, the oblong hole being directed in the direction of arrival of the cover on the manhole in position closing;
  • the drive means comprises at least one pusher fixed to the cover at a distance 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 comprising an open and locked access door.

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 tank comprising at least a compartment intended to contain a volume of materials, the compartment being provided on its upper part with a manhole, on which is immobilized a manhole closing device 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 one 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 description which follows of an embodiment given solely by way of nonlimiting example with reference to the appended drawings, in which:
  • Figure 1 shows schematically in vertical cross section the closure device according to the invention in the closed position;
  • Figure 2 shows schematically in vertical cross section the closure device according to the invention in the ajar position;
  • Figure 3 shows schematically in vertical cross section the closure device according to the invention in the fully open position;
  • Figure 4 shows schematically in horizontal cross section the closure device according to the invention in the closed position; and
  • Figure 5 shows schematically 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 tank 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 upper edge 3 free.

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 others, a drip tray bottom 4, the outer wall 5 of which also has an outer axis 6 of articulation in rotation with a movable cover 7 from tank to drips and a free outside edge 8 of complementary shape to the outside edge free 9 of the cover 7 and for example plan and circular. The bottom 4 and the cover 7 are by example with circular and metallic contours, such as stainless steel. The bottom 4 comprises 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 a support. outside 2a of an outer axis 10 of articulation in rotation with a support 11a a movable manhole cover 11 having an outer edge 12 of shape complementary to that of the edge 3 of the manhole and for example a plane.

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 cover 11, shown in the figure 1, the cover 11 is folded over the edge 3 of the manhole 2 and means sealing provided on the edge 12 of the cover are applied to the edge 3 of the hole man 2, so as to prevent the passage of fluid, liquid or particles through manhole 2 in one direction or the other between the tank and the exterior 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. 1, the cover 7 is folded over the bottom 4 of the drip tray and the edge 9 is applied facing the edge 8, so as to form a closed compartment delimited by the bottom 4 and 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 FIG. 3, the cover 11 and the cover 7 are rotated by an opening angle greater than 90 ° relative to their closed position to allow for example the passage of a person or of a tool in the manhole 2, for example for inspection or cleaning the tank or manhole 2.

Un moyen d'entraínement 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 entraíne également celui du couvercle 11, de même que le déplacement du capot 7 de la position d'ouverture à la position de fermeture entraíne 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 of 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 so that the movement of the cover 7 from the closed position to the open position also causes that of the cover 11, as well as the movement of the cover 7 from the open position to the closed position also drives that of the cover 11. The hinge pin 10 has a clearance relative to the support 2a of the manhole 2 or to the support 11a of the cover 11, so that during the closing movement of the manhole 2, it is first the part of the edge 12 close to the axis 10 which is applied to the edge 3 of the hole of man 2, then that by spacing of the supports 2a and 11a it is the entire edge 12 which is applied to edge 3. For this purpose, the axis 10 is for example housed in an oblong hole 10a of the support 11a and / or of the support 2a, directed parallel to the direction of arrival of the cover 11 on the manhole 2 in the position of closing, i.e. perpendicular to the plane of edge 3 in the example represented. For example in the example shown, the oblong hole 10a is provided only in support 11a.

Ce moyen d'entraínement 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 by example as shown only one arm, which is articulated at a first end by an axis 14 of rotation with two reinforcements 15, 16 transverse of the cover 7, fixed under it and which is articulated in a second end distant from the first with an ear 18 fixed on the top of the cover 11 by an axis 17 of rotation distant from the axis 10 and for example diametrically opposite. Axes 6, 10, 14 and 18 are parallel to each other and for example horizontal.

Le moyen d'entraínement 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 further include reinforcement one or more pushers 13b fixed under the cover 7 at a distance from its axis 6. The pusher 13b is positioned above the cover 11 and away from its axis 10 to push it towards the closed position when moving the half-open position to 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 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 for actuating the cover 7 between one and the other of a first actuation position corresponding to the closed position and a second actuation 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 means of control of the actuation part 20 by the user. In the case of a cylinder in as part 20 of actuation, the connection between the body 19 and the means of control is ensured by pneumatic or hydraulic lines, while in the case of an electromagnet as an actuating part, 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 from the cover 7 for move the actuating part 20 from the second position to the first position and maintain the actuating part 20 in this second position, so to block the cover 7 and the cover 11 in the closed position. Way to control is also able to move the part 20 for actuating the first position to the second position and hold the actuating part 20 in this second position, in order to pass the cover 11 and the cover 7 into the half-open position. The control means is for example located more lower than the manhole on the tank, in a location accessible to a person floor and for example positioned at shoulder height. This control means is by example a control station or box with an open access door 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, by pneumatic example but can also be hydraulic. Alternatively, the actuating part 20 can also be moved electromagnetically, by 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'entraínement, 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 Figure 2, corresponding to a lower angular position of the cover 7 relative to its lower closed position for example at 10 ° and for example between 3 and 4 ° allows a passage between the cover 7 and the bottom 4 and to lift, by means of the means the edge 12 of the cover 11 above the edge 3 of the manhole 2 to make room for 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 following bottom 4 a straight course having a component perpendicular to the plane of the edge 3 of the manhole 2 or, as shown, in a straight course perpendicular to this plane, to be further from the body 19 in the second position corresponding to the half-open position as 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 casing 21 itself tightly fixed 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 via a removable connecting member accessible in the ajar position and located in the closed compartment formed by the cover 7 and the bottom 4 in the position closing.

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 part 20 comprises a perpendicular pin 22 in the plane of the edge 3 and connected to a shoulder 23 located outside the body 19 during the guide travel 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, along 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 is used to move the cover 7 and the cover 11 by the shoulder 23 from the half-open position to the position of closure and is located below the shoulder 23, while the second stop 25 is used to move the cover 7 and the cover 11 through the shoulder 23 of the closed position at the half-open position and maintained 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 liaison body.

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 lower stop 24 is formed by a part functioning like a clothespin, which has two jaws 26, 27 arranged face to face around the spindle 22 and mounted movable in rotation around bolts 28, 29 for fixing to a support 30 secured to the cover 7. A means 31 of prestressing of the jaws 26, 27 in an engaged 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 legs 33, 34 of extension of the jaws 26, 27 beyond the bolts 28, 29. Means 35, 36 for gripping are provided on the legs 33, 34 to be accessible in the half-open position and to pass the jaws in a disengaged position with pin 22 and the shoulder 23, in which the jaws 26, 27 are spaced from one another at against the prestressing means 31 in order to allow the passage between them pin 22 and the shoulder 23. The gripping means 35, 36 are for example formed by the end portion of the legs 33, 34, located near the edge 9 and angled 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 closing 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.Assuming that the cover 11 is initially in position closing, 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 the stop 25 through the shoulder 23 and makes turn cover 7 around axis 6 and cover 11 around axis 10 until their half-open position. The interior of manhole 2 and the tank is thus vented, without requiring total opening of the cover 11 and the cover 7 and without the user having to go himself to the nearby tank 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'entraínement, 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 user action 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 brings the stop 24 towards the bottom 4 and rotates the cover 7 around the axis 6 and the cover 11 around axis 10 to their closed position. The cover 7 and, through 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 barrier physical, formed by the cover 7 and the bottom 4, is then present in the position of closure around the means for moving the cover 11, which prevents an unauthorized person from accessing and handling them 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 means command, it has the possibility of entering the gripping means of the connecting member through the passage formed between the cover 7 and the bottom 4 for disengage the jaws 24, 25. If the user raises the cover at the same time 7, for example using a handle 37 fixed 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 makes it possible to separate the cover 7 from the actuating part 20. The user continuing to lift the cover 7 then has the possibility of tilting it until the fully 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 hole man 2 first brings the cover 7 to the actuating part 20 and grasps the means for gripping the connecting member through the passage formed between the cover 7 and bottom 4 to disengage the jaws 24, 25, which lowers the jaws 24, 25 spread around the shoulder 23 then around the spindle 22, to reach the half-open position. The user then acts on the means to switch to the closed position, as described above.

Claims (16)

Dispositif de fermeture d'un trou d'homme de citerne, comportant : un couvercle (11) adapté à la fermeture du trou d'homme (2), des moyens de fixation du couvercle (11) en position de fermeture du trou d'homme (2),
les moyens de fixation comprenant : un moyen (20) de déplacement du couvercle (11) par rapport au trou d'homme (2) entre l'une et l'autre d'une position de fermeture bloquée du trou d'homme (2) et d'une position au moins d'entrebâillement par rapport au trou d'homme (2), et un moyen de commande du moyen (20) de déplacement au moins de l'une à l'autre des positions de fermeture et d'entrebâillement, situé à distance du couvercle (11), caractérisé en ce que le moyen (20) de déplacement comporte : un corps (19) immobilisé par rapport au trou d'homme (2) dans un fond (4) béant, un capot (7), au moins une pièce (20) d'actionnement guidée par rapport au corps (19) suivant une course commandée par le moyen de commande entre l'une et l'autre de première et deuxième positions d'actionnement correspondant respectivement aux positions de fermeture et d'entrebâillement, et un moyen (15, 16) pour entraíner, à partir de la pièce (20) d'actionnement et par l'intermédiaire du capot (7), le couvercle (11) entre l'une et l'autre des positions de fermeture et d'entrebâillement, de telle sorte qu'en positon de fermeture du couvercle (11) le capot (7) soit appliqué contre l'ouverture du fond (4) pour former avec celui-ci un compartiment clos dans lequel se trouvent le moyen (20) de déplacement et le couvercle (11) et qu'en position d'entrebâillement un passage soit présent entre le capot (7) et le fond (4). Device for closing a tank manhole, comprising: a cover (11) suitable for closing the manhole (2), means for fixing the cover (11) in the closed position of the manhole (2),
the fixing means comprising: means (20) for moving the cover (11) relative to the manhole (2) between one and the other from a locked closed position of the manhole (2) and a position at least half-open relative to the manhole (2), and means for controlling the means (20) for moving at least one of the closed and half-open positions to one another, located at a distance from the cover (11), characterized in that the displacement means (20) comprises: a body (19) immobilized relative to the manhole (2) in a gaping bottom (4), a cover (7), at least one actuating part (20) guided relative to the body (19) following a stroke controlled by the control means between one and the other of first and second actuating positions corresponding respectively to the closed positions and half-open, and means (15, 16) for driving, from the actuating part (20) and via the cover (7), the cover (11) between one and the other of the closed positions and partially open, so that in the closing position of the cover (11) the cover (7) is applied against the opening of the bottom (4) to form therewith a closed compartment in which the means are located ( 20) of displacement and the cover (11) and in the partially open position a passage is present between the cover (7) and the bottom (4). Dispositif de fermeture suivant la revendication 1, caractérisé en ce que le moyen (20) de déplacement comporte au moins un vérin.Closing device according to claim 1, characterized in that the displacement means (20) comprises at least one jack. Dispositif de fermeture suivant l'une quelconque des revendications précédentes, caractérisé en ce que le moyen (20) de déplacement comporte au moins un organe de déplacement du couvercle (11) actionné électromagnétiquement par le moyen de commande.Closing device according to any one of the preceding claims, characterized in that the displacement means (20) comprises at least one displacement member of the cover (11) actuated electromagnetically by the control means. Dispositif de fermeture l'une quelconque des revendications précédentes, caractérisé en ce que le fond (4) et le capot (7) sont ceux d'un bac à égouttures situé autour du trou d'homme (2).Closure device any one of the preceding claims, characterized in that the bottom (4) and the cover (7) are those of a drip tray located around the manhole (2). Dispositif de fermeture suivant l'une quelconque des revendications précédentes, caractérisé en ce que la pièce (20) d'actionnement est reliée au moyen (15, 16) d'entraínement du couvercle (11) par l'intermédiaire d'un organe de liaison amovible accessible en position d'entrebâillement et se trouvant dans ledit compartiment en position de fermeture.Closure device according to any one of the preceding claims, characterized in that the actuating part (20) is connected to the means (15, 16) for driving the cover (11) by means of a removable link accessible in the ajar position and located in said compartment in the closed position. Dispositif de fermeture suivant la revendication 5, caractérisé en ce que l'organe de liaison de la pièce (20) d'actionnement avec le moyen (15, 16) d'entraínement comporte : un moyen (26, 27) d'enclenchement avec une partie correspondante (22) prévue sur la pièce (20) d'actionnement, un moyen (31) de précontrainte du moyen (26, 27) d'enclenchement dans une position d'enclenchement avec ladite partie correspondante (22), permettant la liaison entre le moyen (15, 16) d'entraínement et la pièce (20) d'actionnement, le moyen (26, 27) d'enclenchement étant apte à passer à l'encontre des moyens (31) de précontrainte à une position de désenclenchement, dans laquelle le moyen (15, 16) d'entraínement est apte à être séparé de la pièce (20) d'actionnement, et des moyens (35, 36) de préhension du moyen (26, 27) d'enclenchement, accessibles dans la position d'entrebâillement pour le faire passer dans la position de désenclenchement. Closing device according to claim 5, characterized in that the member for connecting the part (20) for actuation with the drive means (15, 16) comprises: means (26, 27) for engagement with a corresponding part (22) provided on the actuating part (20), means (31) for prestressing the engagement means (26, 27) in an engagement position with said corresponding part (22), allowing the connection between the drive means (15, 16) and the part (20 ) of actuation, the means (26, 27) of engagement being able to pass against the means (31) of prestressing in an disengaged position, in which the means (15, 16) of drive is suitable to be separated from the actuating part (20), and means (35, 36) for gripping the engagement means (26, 27), accessible in the half-open position so as to pass it into the disengaged position. Dispositif de fermeture suivant l'une quelconque des revendications précédentes, caractérisé en ce que la pièce (20) d'actionnement comporte une broche (22) raccordée à un épaulement (23) extérieur au corps (19) et se trouvant, suivant la course de guidage, entre une première butée (24) de déplacement du capot (7) de la position d'entrebâillement à la position de fermeture et une deuxième butée (25) de déplacement du capot (7) de la position de fermeture à la position d'entrebâillement.Closure device according to any one of the preceding claims, characterized in that the actuating part (20) comprises a pin (22) connected to a shoulder (23) external to the body (19) and being, along the stroke guide, between a first stop (24) for moving the cover (7) from the partially open position to the closed position and a second stop (25) for moving the cover (7) from the closed position to the position to crack. Dispositif de fermeture suivant les revendications 6 et 7, caractérisé en ce que la première butée (24) de déplacement est formée sur le moyen (26, 27) d'enclenchement de l'organe de liaison. Closure device according to Claims 6 and 7, characterized in that the first displacement stop (24) is formed on the means (26, 27) for engaging the connecting member. Dispositif de fermeture suivant la revendication 8, caractérisé en ce que le moyen (26, 27) d'enclenchement comprend deux mâchoires (26, 27) montées mobiles en rotation sur un support (30) solidaire du capot (7) entre l'une et l'autre des positions d'enclenchement et de désenclenchement, pour entourer la broche (22) et former la première butée (24) de déplacement en position d'enclenchement, et pour être écartées de la broche (22) et ménager un passage pour l'épaulement (23) en position de désenclenchement, le moyen (31) de précontrainte comprend un ressort (32) de compression monté entre deux pattes (33, 34) de prolongement des mâchoires (26, 27) au-delà des axes de rotation (28, 29) des mâchoires (26, 27) et les moyens (35, 36) de préhension sont prévus sur les pattes (33, 34).Closure device according to claim 8, characterized in that the engagement means (26, 27) comprises two jaws (26, 27) mounted so as to be able to rotate on a support (30) integral with the cover (7) between one and the other of the engagement and disengagement positions, to surround the spindle (22) and form the first stop (24) for displacement in the engagement position, and to be separated from the spindle (22) and provide a passage for the shoulder (23) in the disengaged position, the prestressing means (31) comprises a compression spring (32) mounted between two legs (33, 34) for extending the jaws (26, 27) beyond the axes of rotation (28, 29) of the jaws (26, 27) and the gripping means (35, 36) are provided on the legs (33, 34). Dispositif de fermeture suivant l'une quelconque des revendications précédentes, caractérisé en ce que le capot (7) est articulé par un axe de rotation (6) au fond (4), le couvercle (11) comporte un support extérieur (11a) articulé par un axe de rotation (10) à un support (2a) immobilisé à l'extérieur du trou d'homme (2) et le moyen d'entraínement comprend au moins un bras (13) reliant le capot (7) au couvercle (11) à distance de leurs axes (6, 10) de rotation et lui-même articulé en rotation par rapport au capot (7) et au couvercle (11).Closure device according to any one of the preceding claims, characterized in that the cover (7) is articulated by an axis of rotation (6) at the bottom (4), the cover (11) comprises an articulated external support (11a) by an axis of rotation (10) to a support (2a) immobilized outside the manhole (2) and the drive means comprises at least one arm (13) connecting the cover (7) to the cover ( 11) at a distance from their axes of rotation (6, 10) and itself articulated in rotation relative to the cover (7) and the cover (11). Dispositif de fermeture suivant la revendication 10, caractérisé en ce que l'axe (10) d'articulation du couvercle (11) possède un jeu par rapport au support (2a) du trou d'homme (2) et/ou par rapport au support (11a) du couvercle (11), de manière à ce que le moyen d'entraínement applique totalement le bord (9) de fermeture du couvercle (11) sur le bord correspondant (3) du trou d'homme (2) lors du passage de la position d'entrebâillement à la position de fermeture.Closure device according to claim 10, characterized in that the hinge pin (10) of the cover (11) has a clearance relative to the support (2a) of the manhole (2) and / or relative to the support (11a) of the cover (11), so that the drive means fully applies the edge (9) for closing the cover (11) on the corresponding edge (3) of the manhole (2) during the transition from the half-open position to the closed position. Dispositif de fermeture suivant la revendication 11, caractérisé en ce que l'axe (10) d'articulation du couvercle (11) est logé dans un trou oblong (10a) du support (2a) du trou d'homme (2) et/ou du support (11a) du couvercle (11), le trou oblong (10a) étant dirigé suivant la direction d'arrivée du couvercle (11) sur le trou d'homme (2) en position de fermeture.Closure device according to claim 11, characterized in that the hinge pin (10) of the cover (11) is housed in an oblong hole (10a) in the support (2a) of the manhole (2) and / or of the support (11a) of the cover (11), the oblong hole (10a) being directed in the direction of arrival of the cover (11) on the manhole (2) in the closed position. Dispositif de fermeture suivant l'une quelconque des revendications précédentes, caractérisé en ce que le moyen d'entraínement comprend au moins un poussoir (13b) fixé au capot (7) à distance de son axe (6) de rotation et agencé pour pousser le couvercle (11) jusqu'à la position de fermeture.Closing device according to any one of the preceding claims, characterized in that the drive means comprises at least one pusher (13b) fixed to the cover (7) at a distance from its axis (6) of rotation and arranged to push the cover (11) to the closed position. Dispositif de fermeture suivant l'une quelconque des revendications précédentes, caractérisé en ce que le moyen de commande est situé dans un poste de commande distant du couvercle (11) et comportant une porte d'accès ouverte et fermée à clé.Closure device according to any one of the preceding claims, characterized in that the control means is located in a control station remote from the cover (11) and comprising an open and locked access door. 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 (2), sur lequel est immobilisé un dispositif (1) de fermeture du trou d'homme (2) selon l'une quelconque des revendications précédentes.Cistern comprising at least one compartment intended to contain a volume of materials, the compartment being provided on its upper part with a manhole (2), on which is immobilized a device (1) for closing the hole man (2) according to any one of the preceding claims. Citerne suivant la revendication 15, caractérisée en ce que le moyen de commande est prévu en un endroit accessible par une personne au sol.Cistern according to claim 15, characterized in that the control means is provided in a place accessible by a person 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 true EP1440916A1 (en) 2004-07-28
EP1440916B1 EP1440916B1 (en) 2008-12-10

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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

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2322452A1 (en) * 2009-11-17 2011-05-18 Peter Reitinger Explosion protection flap
CN112234490A (en) * 2020-10-21 2021-01-15 国网山西省电力公司阳泉供电公司 Auxiliary device for electric power system maintenance

Citations (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 Dueperthal Gmbh Sicherheitstechnik, 8757 Karlstein, De
FR2656286A1 (en) * 1989-12-26 1991-06-28 Ets Magyar Anti-depressurization device for the compartments of a road tanker
FR2665146A1 (en) * 1990-07-25 1992-01-31 Ets Magyar Device for locking the covers of drip trays on a road tanker

Patent Citations (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 Dueperthal Gmbh Sicherheitstechnik, 8757 Karlstein, De
FR2656286A1 (en) * 1989-12-26 1991-06-28 Ets Magyar Anti-depressurization device for the compartments of a road tanker
FR2665146A1 (en) * 1990-07-25 1992-01-31 Ets Magyar Device for locking the covers of drip trays on a road tanker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2322452A1 (en) * 2009-11-17 2011-05-18 Peter Reitinger Explosion protection flap
CN112234490A (en) * 2020-10-21 2021-01-15 国网山西省电力公司阳泉供电公司 Auxiliary device for electric power system maintenance
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

Also Published As

Publication number Publication date
ATE417006T1 (en) 2008-12-15
FR2850365A1 (en) 2004-07-30
DE602004018205D1 (en) 2009-01-22
FR2850365B1 (en) 2005-09-30
EP1440916B1 (en) 2008-12-10

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