EP0985770A1 - Schachtabdeckung - Google Patents

Schachtabdeckung Download PDF

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Publication number
EP0985770A1
EP0985770A1 EP98116949A EP98116949A EP0985770A1 EP 0985770 A1 EP0985770 A1 EP 0985770A1 EP 98116949 A EP98116949 A EP 98116949A EP 98116949 A EP98116949 A EP 98116949A EP 0985770 A1 EP0985770 A1 EP 0985770A1
Authority
EP
European Patent Office
Prior art keywords
cover
assembly according
closed position
hinge device
manhole assembly
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.)
Withdrawn
Application number
EP98116949A
Other languages
English (en)
French (fr)
Inventor
Frede Sorensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furnes-Hamjern SCC AS
Original Assignee
Furnes-Hamjern SCC AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furnes-Hamjern SCC AS filed Critical Furnes-Hamjern SCC AS
Priority to EP98116949A priority Critical patent/EP0985770A1/de
Publication of EP0985770A1 publication Critical patent/EP0985770A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1463—Hinged connection of cover to frame
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/149—Annular gaskets

Definitions

  • the present invention relates to a manhole cover for covering a well, comprising a cover, a frame and hinge device allowing the cover to swing between an open and closed position, and to a method of controlling said movement.
  • a manhole cover for covering a well of the above-mentioned type, which has a cover that can be locked in the closed position by locking means.
  • the lid comprises an opening for introducing a jumper bar with which the locking means interact.
  • the locking means are adapted to give way under the action, when a person attempts to open the cover with a special tool, i.e. a crowbar.
  • the locking means give way to forces acting on the bottom of the cover and due to the pre-tensioned locking means, the cover will burst open when the locking means give way. Forces urging the cover to open are e.g.
  • the cover is allowed to open gradually under the influence of a force or pressure from under the cover and will close by itself, when the pressure or force is not acting any longer on the cover, without the risk of the cover detaching itself from the frame.
  • the manhole assembly shown in Figures 1 and 2 comprises a frame 3 with a receiving face for the cover 1 in the form of a flange 4.
  • the cover 1 On its underside, the cover 1 is provided with a gasket 6 that will come into sealing contact with the flange 4, when the cover is in the closed position.
  • the cover 1 On its underside, the cover 1 may be provided with stiffening ribs and the cover 1 may be provided with a hole for receiving a bar to open the cover 1.
  • the cover 1 is connected to the frame 3 by a hinge device 2.
  • the cover 1 can swing from a horizontal closed position to a more or less vertical open position and vice versa.
  • the hinge device 2 comprises a pin 7 and pin hole 8, whereby the pin holes 8 are provided in lugs 9 that are connected and extend from the cover.
  • the pin 7 can be fixed to the frame directly, or the frame 3 may also be provided with ribs or lugs which have pin holes 8 for receiving the pin 7.
  • the pin and pin hole arrangement of the hinge device 2 can form a double-leaf hinge or a T-hinge or any other suitable type of hinge as easily conceived by a person skilled in the art.
  • the hinge device 2 with the pin 7 and pin hole 8 arrangement provides for exact guidance of the swinging movement of the cover 1 between its open and closed position. Moreover, it secures the cover 1 non-detachably to the frame 8.
  • the cover 1 When a force acting on the cover opens the cover 1, e.g. when the water level under the well cover increases and forces the cover 1 to open, the cover 1 will function as a relief valve and gradually open until the water level sinks and the pressure ceases to act on the cover whereby it will automatically fall back into its closed position.
  • the cover 1 is "connected non-detachably" to the frame 3 which means that the cover 1 cannot detach itself in the normal swinging movement between the open and closed position.
  • the user of the manhole can remove the cover 1, if necessary, e.g. by removing the pin 7.
  • the pin holes 8 of the hinge device 2 may according to a preferred embodiment be provided with slits 11 opening to the periphery of the lug 9 extending laterally from the cover 1, in which the pin holes are located. These slits 11 are, as can be seen from Figure 5, placed such that only in the fully open position where the cover 1 comes to a rest, the user can pull the cover 1 out of the connection with the frame 3.
  • the hinge device 2 is encapsulated and is filled with a lubricant in order to protect it from environmental influences.
  • the manhole assembly may be provided with a latch 5 to secure the cover 1 in the open position.
  • the latch 5 is connected freely swinging to the cover and extends downwards from the cover 1 from a pivot 10. In the fully open position or substantially fully open position, the latch 5 rests on the flange 4, preferably in a recess, in order to secure the cover in the closed position. By swinging the latch 5 upwards against the gravity force, a user can release the cover 1 and move it into the closed position.
  • the cover may be aggrevated in particular in an area diametrically opposite to the hinge, and/or the cover may be secured with a resilient means (not shown) urging the cover into the closed position.
  • the cover is secured in the closed position solely by the gravity force.
  • This securing by the gravity force only has the advantage that the cover cannot burst open upon a pressure exercised on it.
  • the commonly used securing means such as jumpers, latches or hooks cause an initial force to be overcome, whereafter the cover will open abruptly.
  • the cover By allowing the cover to open under pressures from under the cover, the cover functions as a relief valve for the pressure that can build up under it.
  • the gradual opening of the cover 1 will not pose a serious hazard and the opening might be so small that vehicles can still pass over the cover thereby pushing the lid down for a short time so that the main function of the cover, i.e. to secure a well-hole, is always provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
EP98116949A 1998-09-08 1998-09-08 Schachtabdeckung Withdrawn EP0985770A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98116949A EP0985770A1 (de) 1998-09-08 1998-09-08 Schachtabdeckung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98116949A EP0985770A1 (de) 1998-09-08 1998-09-08 Schachtabdeckung

Publications (1)

Publication Number Publication Date
EP0985770A1 true EP0985770A1 (de) 2000-03-15

Family

ID=8232593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116949A Withdrawn EP0985770A1 (de) 1998-09-08 1998-09-08 Schachtabdeckung

Country Status (1)

Country Link
EP (1) EP0985770A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243705A1 (de) * 2001-03-23 2002-09-25 Societe De Transformation Industrielle De Materiels Orthopediques, Medicaux Plastiques Sigle "Trioplast" Sicherheitsabdeckung zum Verschliessen von Zugangsöffnungen bei Kläranlagen
CN102888857A (zh) * 2012-10-23 2013-01-23 四川省电力公司西昌电业局 一种耐压井盖

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163467A (en) * 1984-07-13 1986-02-26 Turner Bros Manhole cover with torsion spring hinge to facilitate opening
EP0451064A1 (de) * 1990-04-05 1991-10-09 Societe Anonyme Dite : Sodif Fahrbahnschachtsabdeckung mit Gelenkdeckel, Dämpffuge und Kantelschliessung
EP0507708A1 (de) * 1991-04-05 1992-10-07 Societe Anonyme Dite : Sodif Sicherheitsvorrichtung für Schachtklappdeckel
EP0533533A1 (de) 1991-09-16 1993-03-24 Pont-A-Mousson S.A. Verriegelte Schachtabdeckung
EP0741208A1 (de) * 1995-05-05 1996-11-06 Riccardo Lamperti Strassenkappe für Fussgänger- und Fahrzeuggebiete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163467A (en) * 1984-07-13 1986-02-26 Turner Bros Manhole cover with torsion spring hinge to facilitate opening
EP0451064A1 (de) * 1990-04-05 1991-10-09 Societe Anonyme Dite : Sodif Fahrbahnschachtsabdeckung mit Gelenkdeckel, Dämpffuge und Kantelschliessung
EP0507708A1 (de) * 1991-04-05 1992-10-07 Societe Anonyme Dite : Sodif Sicherheitsvorrichtung für Schachtklappdeckel
EP0533533A1 (de) 1991-09-16 1993-03-24 Pont-A-Mousson S.A. Verriegelte Schachtabdeckung
EP0741208A1 (de) * 1995-05-05 1996-11-06 Riccardo Lamperti Strassenkappe für Fussgänger- und Fahrzeuggebiete

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243705A1 (de) * 2001-03-23 2002-09-25 Societe De Transformation Industrielle De Materiels Orthopediques, Medicaux Plastiques Sigle "Trioplast" Sicherheitsabdeckung zum Verschliessen von Zugangsöffnungen bei Kläranlagen
FR2822481A1 (fr) * 2001-03-23 2002-09-27 Transformation Ind De Materiel Trappe de securite utilisable notamment pour obturer les orifices d'acces aux stations d'epuration
CN102888857A (zh) * 2012-10-23 2013-01-23 四川省电力公司西昌电业局 一种耐压井盖

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