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WO1999013170A1 - Dispositif de verrouillage pour couvercles de puits - Google Patents

Dispositif de verrouillage pour couvercles de puits Download PDF

Info

Publication number
WO1999013170A1
WO1999013170A1 PCT/SE1998/001576 SE9801576W WO9913170A1 WO 1999013170 A1 WO1999013170 A1 WO 1999013170A1 SE 9801576 W SE9801576 W SE 9801576W WO 9913170 A1 WO9913170 A1 WO 9913170A1
Authority
WO
WIPO (PCT)
Prior art keywords
elements
cover
locking device
flange
metal
Prior art date
Application number
PCT/SE1998/001576
Other languages
English (en)
Swedish (sv)
Inventor
Sven-Erik Johansson
Original Assignee
Johansson Sven Erik
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 Johansson Sven Erik filed Critical Johansson Sven Erik
Priority to AU91004/98A priority Critical patent/AU9100498A/en
Priority to EP98943149A priority patent/EP1025317A1/fr
Publication of WO1999013170A1 publication Critical patent/WO1999013170A1/fr

Links

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
    • E02D29/1427—Locking devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E03F2005/065—Gully gratings with elastic locking elements

Definitions

  • the present invention relates to a locking device to be mounted in the space between for instance cover or grate and surrounding frame in openings of sewage and draining systems and thereby prevent unauthorised access to wells and culverts, comprising elements of stainless metal and friction element of resilient material.
  • a design known through patent application SE 1812487-2 comprises a rubber detail in a holder of metal, placed on at least one side of the cover or grate, inside the surrounding frame.
  • the rubber detail is forced to expand by inserting a metal piece, a wedge, whereby the friction against the edges of the cover and the frame provides locking.
  • the rubber detail has a complicated shape with longitudinal ridges in the wedge slot and outer transversal grooves or rifles on one side.
  • the detail has a recessed back for mounting of a metal holder having an outward bent part, which will bear against the upper side of the cover or the frame.
  • the rubber detail rests in a u-shaped lower part of the metal holder. To open a cover the whole device is pulled up from the space by applying a tool under the device itself.
  • the device is pulled up under full friction against the rubber detail, which then runs a great risk to be damaged. Since one side of the device, with the metal holder makes contact with the cover or the frame, such high friction is not obtained as if the metal holder would have been provided with a rubber back.
  • the spaces between covers and frames are not the same from make to make and to overcome this, rubber details of different dimensions must be available. This leads to that more tools with different dimensions must be used for manufacturing of the details.
  • a different embodiment is disclosed comprising only the rubber detail, which is forced to expand. To make such a device effective the rubber detail would be equilateral and thereby a further variant is required and another tool for manufacturing.
  • An object with the present invention is to provide a device for securing covers or grates for wells in surface water and sewage systems that have a reliable and simple design with few and simple details being easy to manufacture without complicated tools and thereby cheap.
  • the device should be easy to apply in spaces of different width and must provide so high friction against cover and frame that an unauthorised removal is exceedingly difficult. Besides the device should be easy to remove and able to re-use.
  • the object is achieved by a device characterised in that the metal elements are three in number of which the two first ones are identical, towards each other inverted elements with a plane rectangular web, whose lower edges have a first flange, bent perpendicular to the element, extending to half the width of the element and whose upper part is bent in the opposite direction forming a second flange, preferably perpendicular to the element, whereby their first flanges catch under the edge of the opposite element and secure the elements to each other when the elements are positioned inverted to each other so that when one of them is subjected to a lifting force, the force is transferred to the second element, and that the third metal element is plane and of less length and width than the two elements and which in its upper part, a small distance from the upper edge, is provided wits cuts for applying a removing tool and that the friction elements of resilient material are two in number and fixed to the first elements so that they cover the web under the second flanges and have a thickness adapted to the width of the space between the well
  • Fig.1 shows a first metal element in perspective with a glued friction element of resilient material.
  • Fig. 2 shows a plane view of a second metal element.
  • Fig. 3 shows the application of the locking device in a well.
  • a first metal element is depicted with a web 2 and an outwardly bent first flange 3 in the lower part, extending to half the width of the web.
  • the upper part of the element is bent outwardly perpendicular to the web forming a second flange 4 in the opposite direction to the first flange 3.
  • a plate 5 of resilient material preferably synthetic rubber of a relatively hard quality. The plate is cut or punched from rubber sheets of standard size.
  • the thickness of the plate is adapted to the application in question and is for instance fixed to the web with a double adhesive tape.
  • the plate can also be glued.
  • a second metal element 6 is depicted, which has length and width slightly less than those of the first element do.
  • the upper corners have a chamfering 7, and at a short distance from the upper edge cuts 8 with a horizontal upper part 9 are made. These form a holder for a retraction tool.
  • the lower edges of the element have a slight chamfering 10 to facilitate inserting between the two first elements.
  • the second element can be wedge shaped in the lower part.
  • Fig. 3 shows how the locking device is applied in the space between a drain cover 11 and its surrounding frame 12.
  • the two identical first metal elements 1 are provided with rubber plates with a thickness that the space is completely filled out when the two metal elements are put together with their webs against each other and the upper flanges pointing from each other. The elements are pushed down in the space so that the flanges bear against cover and frame respectively.
  • the second metal element 7 is pressed or punched down between the two first elements, whereby the rubber plates 5 are compressed and will be pressed strongly against the edges of the cover and the frame respectively.
  • the metal element 7 is punched down until its upper edge lies slightly lower than the upper side of the flanges 4.
  • a very high friction force arise keeping the device and thereby the well cover in place and a force of the size of 1 ,5 kN is required to pull or press up a cover out of its frame.
  • the load was increased by a continuous increase of the deformation with 10 mm/minute.
  • Results from testing with cover and frame of type A1 with two locking devices are shown in table 1. The test was performed both with centric and eccentric load.
  • results from testing of cover and frame of type A1 with hinges at one short side locked with one locking device are shown in table 2.
  • the test was only carried out with centric load as eccentric load makes opening impossible.
  • the force was applied at the short side where the locking device was mounted.
  • the invention is not limited to the described embodiment but can be made in different ways within the scope of the claims, for instance as locking device for other sealing devices than just covers and grates for wells in sewage and draining systems.
  • locking device for other sealing devices than just covers and grates for wells in sewage and draining systems.
  • the backside of the webs of the two first elements have a cut surface or is provided with ridges that eliminate the need to glue or tape the friction element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical 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)
  • Sewage (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

L'invention concerne un dispositif de verrouillage qui peut être monté dans l'espace situé entre un couvercle (11) ou une grille et un cadre (12), dans les orifices des canalisations d'eau et des égouts, et qui empêche une ouverture non autorisée. Le dispositif de verrouillage comprend deux premiers éléments (1), identiques mais inversés l'un par rapport à l'autre et comportant sur un côté un élément de friction (5) constitué d'un matériau résilient. Au niveau de leur bord inférieur, les éléments métalliques comportent, sur la moitié de leur largeur, des rebords (3) recourbés vers l'extérieur, qui se bloquent sous le bord inférieur de l'élément correspondant quand ils sont réunis et insérés dans l'espace. La partie supérieure des éléments est repliée vers l'extérieur en direction d'un second rebord (4), dans le sens opposé à celui du premier (3). Un second élément métallique (6), inséré entre les deux premiers, élargit le dispositif, ce qui comprime les éléments de friction et génère une force frictionnelle d'extension s'exerçant sur les parois de l'espace (11, 12).
PCT/SE1998/001576 1997-09-08 1998-09-07 Dispositif de verrouillage pour couvercles de puits WO1999013170A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU91004/98A AU9100498A (en) 1997-09-08 1998-09-07 Locking device for well covers
EP98943149A EP1025317A1 (fr) 1997-09-08 1998-09-07 Dispositif de verrouillage pour couvercles de puits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703258A SE9703258L (sv) 1997-09-08 1997-09-08 Spärranordning för brunnslock
SE9703258-5 1997-09-08

Publications (1)

Publication Number Publication Date
WO1999013170A1 true WO1999013170A1 (fr) 1999-03-18

Family

ID=20408197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/001576 WO1999013170A1 (fr) 1997-09-08 1998-09-07 Dispositif de verrouillage pour couvercles de puits

Country Status (4)

Country Link
EP (1) EP1025317A1 (fr)
AU (1) AU9100498A (fr)
SE (1) SE9703258L (fr)
WO (1) WO1999013170A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK109740C (da) * 1966-06-07 1968-06-17 Hans Jacob Nielsen Fjederlås til anbringelse i riste over nedløbsbrønde.
DK145548B (da) * 1980-11-25 1982-12-06 E Thomsen Sikringsorgan for et svingbart braenddaeksel
SE438346B (sv) * 1978-12-05 1985-04-15 Kombi Ringen Ab Anordning for att forsvara obehorigt avlegsnande av lock/galler till va-anleggningar genom expanderande gummidetalj

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK109740C (da) * 1966-06-07 1968-06-17 Hans Jacob Nielsen Fjederlås til anbringelse i riste over nedløbsbrønde.
SE438346B (sv) * 1978-12-05 1985-04-15 Kombi Ringen Ab Anordning for att forsvara obehorigt avlegsnande av lock/galler till va-anleggningar genom expanderande gummidetalj
DK145548B (da) * 1980-11-25 1982-12-06 E Thomsen Sikringsorgan for et svingbart braenddaeksel

Also Published As

Publication number Publication date
SE509291C2 (sv) 1999-01-11
SE9703258D0 (sv) 1997-09-08
EP1025317A1 (fr) 2000-08-09
AU9100498A (en) 1999-03-29
SE9703258L (sv) 1999-01-11

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