EP0741208B1 - Strassenkappe für Fussgänger- und Fahrzeuggebiete - Google Patents

Strassenkappe für Fussgänger- und Fahrzeuggebiete Download PDF

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Publication number
EP0741208B1
EP0741208B1 EP96830251A EP96830251A EP0741208B1 EP 0741208 B1 EP0741208 B1 EP 0741208B1 EP 96830251 A EP96830251 A EP 96830251A EP 96830251 A EP96830251 A EP 96830251A EP 0741208 B1 EP0741208 B1 EP 0741208B1
Authority
EP
European Patent Office
Prior art keywords
plate
pin
spring
end portion
projection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96830251A
Other languages
English (en)
French (fr)
Other versions
EP0741208A1 (de
Inventor
Riccardo Lamperti
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.)
Lamperti Riccardo
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0741208A1 publication Critical patent/EP0741208A1/de
Application granted granted Critical
Publication of EP0741208B1 publication Critical patent/EP0741208B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02D29/1418—Covers for manholes or the like; Frames for covers with implements to assist in lifting, e.g. counterweights, springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
    • E05F1/1215—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis with a canted-coil torsion spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2999/00—Subject-matter not otherwise provided for in this subclass

Definitions

  • the present invention relates to a device for closing road wells in vehicle and pedestrian areas, of the type disclosed in the preamble of claim 1.
  • the devices for closing road wells formed underneath road surfaces or open areas and intended for the most varied uses for example for housing the valves and connection nozzles of tanks or cisterns, generally comprise a support frame stably fixed to the ground with cement mortar or other similar materials and defining an opening for access to the underlying cavity, and a plate-like element matching the edge of the said access opening so as to close it with its own weight.
  • the plate-like element normally consists of a considerable mass of grey iron, for example of about 90 to 100 kg, in all those cases where the said plate-like element and the corresponding access opening are, for functional reasons, of large dimensions.
  • the plate-like element must have a thickness suitable for withstanding, without undergoing substantial flexural deformations or being displaced from its seat, stresses and weights even of a significant nature, such as those imparted by vehicles which may pass on it.
  • Opening a device for closing road wells of the type briefly described above involves carrying out a fairly difficult and physically tiring operation since two persons are required to exert simultaneously a raising force by means of suitable tools or special spanners which can be inserted into and rotated inside appropriate holes formed in the plate-like element.
  • a device for closing road wells comprising a rectangular frame defining an opening in correspondence of which a plate-like element is engaged.
  • the plate-like element is hinged around a pivot axis and can be displaced from a closed position to an open position.
  • Two springs are coaxially mounted on the pivot axis and present a first end portion directly acting and pushing against the plate-like element and a second end portion engaged with the rectangular frame.
  • the general object of the present invention is to devise a device for closing road wells in vehicle and pedestrian areas, which is able to overcome substantially the drawbacks mentioned.
  • 1 denotes in its entirety a device for closing road wells in vehicle and pedestrian areas.
  • It comprises a support frame 2, for example of substantially quadrangular shape, having an internal edge 3 defining an opening 4 for access to a well or to a cavity of any type.
  • the support frame 2 has rotatably engaged with it a plate-like element 5 along a hinging axis 6.
  • the plate-like element 5 has peripherally, at the end of one side, a pair of lug-like projections comprising a first projection 7a and a second projection 7b engaging, respectively, with a first hinge pin 8 of smaller length and a second hinge pin 9 of greater length, said pins being aligned along the hinging axis 6.
  • the first pin 8 comprises an active end zone 8a which can be inserted into a first housing recess 10a formed in the frame 2 and the second pin 9 comprises a first end attachment zone 9a which can be engaged with a second housing recess l0b provided in the frame 2 and aligned with the first recess 10a along the hinging axis 6.
  • the plate-like element 5 has at the bottom a perimetral shoulder 5a, which can be inserted into a correspondingly shaped cavity 2a of the frame 2 inside which a sealing gasket 11 consisting of compressible material is arranged.
  • the perimetral shoulder 5a has, adjacent to it, an abutting edge 5b which can rest, in the closed position, against upwardly projecting support zones 2b of the frame 2.
  • the perimetral shoulder 5a, correspondingly shaped cavity 2a and support zones 2b have suitable dimensions so that the sealing gasket 11 is adequately compressed when the abutting edge 5b is in contact with the support zones 2b.
  • a torsional spring 12 is advantageously arranged between the plate-like element 5 and the support frame 2.
  • the torsional spring 12 is of the helical type and comprises a first end portion 12a, inserted into a fastening seat 13 defined by a recess formed in the second projection 7b, and a second end portion 12b which is locked against the frame 2 via a stop element 14.
  • the torsional spring 12 is arranged, wound onto an intermediate portion 9b of the second pin 9 extending in cantilever fashion away from the second projection 7b, and therefore has a working axis substantially coinciding with the hinging axis 6. Furthermore, the torsional spring 12 is designed and suitably arranged so as to be tensioned when the plate-like element is in the closed position (see Fig. 4) and slack when the said element is in the raised, i.e. open position (see Fig. 6).
  • the torsional spring 12 is arranged so as to exert a raising force at least slightly less than the weight of the plate-like element 5, so that the well remains per se closed. Moreover, for safety reasons, the plate-like element 5 is retained by means of one or two locking elements 15, for example of the bolt, bayonet or other type (Fig. 2).
  • the second hinge pin 9 comprises, in addition to the intermediate zone 9b, a second free end zone 9c arranged in contact with an abutment block 16 integral with the support frame 2 and designed to withstand the flexural thrusting forces exerted on the second pin 9 by the torsional spring 12.
  • 17 denotes an element for adjusting the torsional pretensioning force of the torsional spring 12.
  • This adjusting element consists substantially of a tubular body 18 which, prior to positioning of the plate-like element 5 onto the access opening 4 of the manhole cover, is fitted onto the second hinge pin 9.
  • the tubular body 18 is provided with a seating 19 into which the first end portion 12a of the torsional spring 12 engages, the latter being then fitted onto the said second hinge pin 9.
  • the second end portion 12b is always intended to abut against the stop element 14.
  • the tubular body 18 is moreover provided with at least one threaded transverse hole 20 inside which at least one locking screw 21 engages, the respective axis of which is shown in Fig. 7, for locking the said tubular body 18 on the second hinge pin 9.
  • the spring would be wound in the opposite direction and would be mounted, rotated by 180° with respect to the configuration illustrated in Fig. 7, and the stop element 14 would be positioned close to the second projection 7b, while the abutment block 16 could be eliminated since the flexural movements of the second hinge pin 9 would be of a negligible amount.
  • the plate-like element 5 keeps the abutting edge 5b in contact with the support zone 2b of the frame 2 owing to the action of the locking elements 15 opposing the twisting moment exerted by the torsional spring 12 with respect to the hinging axis 6 (see Fig.4).
  • the plate-like closing element of the well may be made of grey iron and may also have a large mass since the opening and closing action is performed mainly by a torsional spring and the force required of a person is in any case limited.
  • the entire structure therefore has a low cost owing to the type of material which can be used for the construction thereof and offers all the mechanical strength and stability characteristics required in situations subject to high external stresses, also because the plate-like closing element is kept in position not only by its own weight but by the hinge pins and the elements locking it to the frame.
  • the opening and closing operations can be performed with a small amount of effort by a single operator and can therefore be easily repeated with great frequency.
  • the device for closing road wells allows one to operate in total safety, since the displacements of the plate-like element are guided by the hinging axis and the weight of the said plate-like element, even when considerable, does not constitute any danger since it is always counterbalanced by the action of the torsional spring.
  • the plate-like element may also have a shape different from that illustrated in the drawings, for example a round or rectangular shape, and the material used may be suitably reinforced sheet metal.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Superstructure Of Vehicle (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Sewage (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)

Claims (7)

  1. Schließvorrichtung von Straßenschächten für Fußgänger- und Fahrzeugflächen, nach der Art umfassend:
    einen Tragrahmen (2), der eine Zugangsöffnung (4) zu einem Schacht festlegt;
    ein plattenförmiges Element (5) zum Schließen der Zugangsöffnung, wobei das plattenförmige Element am Tragrahmen (2) um eine Anlenkachse (6) verschwenkbar derart angreift, daß es zwischen einer angehobenen Offenstellung und einer abgesenkten Schließstellung beweglich ist, in der das plattenförmige Element (5) umfangsmäßig auf dem Tragrahmen (2) aufliegt;
    eine Torsionsfeder (12) mit einer Arbeitsachse, die im wesentlichen mit der Anlenkachse (6) zusammenfällt und einen ersten Endabschnitt (12a), der mit dem plattenförmigen Element (5) verbunden ist, und einen zweiten Endabschnitt (12b) umfaßt, der mit dem Tragrahmen (6) verbunden ist, wobei die Torsionsfeder (12) derart ausgelegt ist, daß sie zur Ausübung einer Hubkraft auf das plattenförmige Element gespannt wird, wenn sich dieses letztere in der abgesenkten Schließstellung befindet;
    wobei das plattenförmige Element (5) mit mindestens einem Anlenkbolzen (9) in Eingriff steht, der längs der Anlenkachse (6) angeordnet ist und einen Zwischenabschnitt (9b) aufweist, um den die Torsionsfeder (12) gewickelt ist,
    dadurch gekennzeichnet, daß der erste Endabschnitt (12a) nicht direkt auf die untere Fläche der Schließplatte drückt und der erste Endabschnitt (12a) in einer Aufnahme (19) eingreift, die an einem Rohrkörper (18) eines Einstellelementes (17) der Torsionsvorspannung vorgesehen ist, das am Anlenkbolzen (9) festgelegt ist, wobei dieser letztere am plattenförmigen Element (5) festliegt, oder
    der erste Endabschnitt (12a) in einer Aufnahme (13) befestigt ist, die in einem im Bereich der Anlenkachse (6) angeordneten Umfangsvorsprung des plattenförmigen Elements (5) gebildet ist.
  2. Vorrichtung nach Anspruch 1, bei der die Torsionsfeder (12) nach der Art einer Schraubenfeder ausgebildet ist.
  3. Vorrichtung nach Anspruch 2, bei der der Rohrkörper (18) mit einer querliegenden Gewindebohrung (20) zur Aufnahme einer Klemmschraube (21) versehen ist.
  4. Vorrichtung nach Anspruch 2, bei der am plattenförmigen Element (5) zwei Anlenkbolzen (8, 9) festliegen, die zueinander beabstandet und längs der Längsachse (6) ausgerichtet sind, wobei die Anlenkbolzen (8, 9) einen ersten Bolzen kleinerer Länge (8) und einen zweiten Bolzen größerer Länge (9) umfassen, der den Zwischenabschnitt (9b) aufweist.
  5. Vorrichtung nach Anspruch 4, bei der das plattenförmige Element (5) längs des Umfanges ein Paar von Vorsprüngen (7a, 7b) aufweist, die einen ersten Vorsprung (7a) und einen zweiten Vorsprung (7b) umfassen, die jeweils den ersten, kleineren Bolzen (8) und den zweiten, größeren Bolzen (9) ergreifen, wobei im zweiten Vorsprung (7b) eine erste Aufnahme (13) zur Befestigung des ersten Endabschnittes (12a) der Schraubenfeder ausgenommen ist.
  6. Vorrichtung nach Anspruch 5, bei der der zweite Anlenkbolzen (9) auskragend am zweiten Vorsprung des plattenförmigen Elementes angreift und einen ersten äußeren Anschlußbereich (9a) und einen zweiten, freien Bereich (9c) umfaßt, wobei die äußeren Bereiche zwischen sich den Endabschnitt (9b) umfassen, um den die Schraubenfeder (12) gewickelt ist, und in dem, festliegend am Tragrahmen (2), ein Anschlagblock (16) für den zweiten, äußeren, freien Bereich (19) vorgesehen ist, der Biegeschüben standhält, die durch die Schraubenfeder (12) auf den zweiten Bolzen (9) ausgeübt werden.
  7. Vorrichtung nach Anspruch 2, bei dem die Schraubenfeder (12) in der Schließstellung des plattenförmigen Elementes (5) auf diesen letzteren eine Kraft ausübt, die mindestens leicht innerhalb des Gewichtes des plattenförmigen Elementes selbst (5) liegt.
EP96830251A 1995-05-05 1996-04-30 Strassenkappe für Fussgänger- und Fahrzeuggebiete Expired - Lifetime EP0741208B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI950304U 1995-05-05
IT1995MI000304U IT236855Y1 (it) 1995-05-05 1995-05-05 Dispositivo di chiusura di pozzetti stradali per aree veicolarie pedonali

Publications (2)

Publication Number Publication Date
EP0741208A1 EP0741208A1 (de) 1996-11-06
EP0741208B1 true EP0741208B1 (de) 1999-04-07

Family

ID=11370599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830251A Expired - Lifetime EP0741208B1 (de) 1995-05-05 1996-04-30 Strassenkappe für Fussgänger- und Fahrzeuggebiete

Country Status (4)

Country Link
EP (1) EP0741208B1 (de)
AT (1) ATE178675T1 (de)
DE (1) DE69601969T2 (de)
IT (1) IT236855Y1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5937583A (en) * 1997-10-31 1999-08-17 Lamperti; Riccardo Device for closing road wells in vehicle and pedestrian areas
EP0985770A1 (de) * 1998-09-08 2000-03-15 Furnes-Hamjern SCC AS Schachtabdeckung
DE20006517U1 (de) 2000-04-08 2000-08-17 Airmatic Gesellschaft für technische Systeme mbH, 58675 Hemer Domschachtabdeckung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810275A (en) * 1972-06-26 1974-05-14 Gsw Appliances Ltd Hinge structure
DE8202626U1 (de) * 1982-02-02 1982-06-24 Neu, Karlheinz, 5810 Witten Abdeckung fuer ein mannloch oder einen schacht
US4534132A (en) * 1983-08-19 1985-08-13 Red Plastic Co., Inc. Spring assisted doors for sidewalk, pit and floor openings
GB8417896D0 (en) * 1984-07-13 1984-08-15 Turner Bros Kingswood Ltd Manhole cover
GB2192654B (en) * 1986-07-19 1990-02-14 Brickhouse Dudley Mfg Manhole cover and frame assembly
FR2680811B1 (fr) * 1991-08-27 1993-11-12 La Rouere Richard De Dispositif a plaque pivotante interdiant l'acces non autorise aux caniveaux techniques de distribution de reseaux cables a occultation par trappes.
FR2683255B1 (fr) * 1991-10-31 1994-01-14 Barat Sa Dispositif d'assistance a l'ouverture et la fermeture d'une trappe notamment d'une trappe d'acces aux ouvrages du genie civil.
FR2713256B1 (fr) * 1993-11-29 1996-02-16 Rouere De Richard Ensemble articulé en fonte du type de sécurité à relevage assisté destiné à la fermeture d'ouvrages au sol à occultation par tampon unique.

Also Published As

Publication number Publication date
ITMI950304V0 (it) 1995-05-05
ATE178675T1 (de) 1999-04-15
ITMI950304U1 (it) 1996-11-05
IT236855Y1 (it) 2000-08-31
EP0741208A1 (de) 1996-11-06
DE69601969T2 (de) 1999-10-07
DE69601969D1 (de) 1999-05-12

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