EP3927901B1 - Cover for manholes equiped with a mechanism for lifting and rotating the cover - Google Patents

Cover for manholes equiped with a mechanism for lifting and rotating the cover Download PDF

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Publication number
EP3927901B1
EP3927901B1 EP20710627.9A EP20710627A EP3927901B1 EP 3927901 B1 EP3927901 B1 EP 3927901B1 EP 20710627 A EP20710627 A EP 20710627A EP 3927901 B1 EP3927901 B1 EP 3927901B1
Authority
EP
European Patent Office
Prior art keywords
cover
fixed frame
lifting
integral
mobile
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.)
Active
Application number
EP20710627.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3927901A1 (en
Inventor
Giambattista Dalena
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.)
Apulia Innovative Technologies Srl
Original Assignee
Apulia Innovative Technologies Srl
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Filing date
Publication date
Application filed by Apulia Innovative Technologies Srl filed Critical Apulia Innovative Technologies Srl
Publication of EP3927901A1 publication Critical patent/EP3927901A1/en
Application granted granted Critical
Publication of EP3927901B1 publication Critical patent/EP3927901B1/en
Active 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
    • 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
    • E02D29/1445—Tools for positioning or removing cover frames
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/01—Trap-doors
    • 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
    • E02D29/1454—Non-circular covers, e.g. hexagonal, elliptic

Definitions

  • the present invention relates to a cover for ground manholes equipped with a mechanism for lifting and horizontally translating the cover.
  • the present invention deals with the field of covers for ground manholes, also governed by UNI EN 124/1995 standard related to crowning and closing devices for circulating areas used by pedestrians and vehicles.
  • filling covers especially if having big sizes (greater than 70 cm by 70 cm), has the problems of having a great weight (more than 100 daN), of being generally custom built with a frame and hooks for performing cover movements, which can occur only through the use of suitable working tools (lifting trucks, mechanical blades, etc.).
  • a variation in commerce consist in a filling cover hinged on one side, whose opening occurs with the help of some gas springs below the cover, whose function is facilitating its lifting.
  • a manhole cover according to the state of the art is known from EP3058140 A1 .
  • Object of the present invention is solving the above prior-art problems, by providing a cover for manholes equipped with a mechanism for lifting and rotating the cover, which has the following features:
  • the cover in its rest position is composed of two parts: the actual cover (1), mobile and coated with the same material of the surrounding pavement, and a small, fixed cover (2a), where the terminal part of the driving arrangement is housed: by means of a handle (10) (B), by acting on a worm screw, the mechanism is actuated and lifts the cover over the walking height (C).
  • telescopic guides allow the horizontal translation of the cover (D), leaving the hole adapted to be accessed.
  • the mechanism is shown in its composing parts: it is composed of a filling cover (1) made of suitable material and sizes (plate made of zinc-coated steel, PVC, stainless steel, etc.) to contain the following conglomerate casting and the related metallic framework, to be performed in a yard. Under rest conditions, the cover abuts onto a fixed frame (6); when it is lifted, the mechanism engages the cover (1) which, due to its prismatic shape ( Figure 4 ), remains blocked in the mechanism whose movements it is constrained to follow.
  • the cover-holding frame (2) in turn is fastened to two telescopic guides (3) having a complete extraction, fastened to a mobile lifting frame (4) which slides, through wheels (4a), onto a fixed guide (5b).
  • the lifting movement occurs by means of a rack (4b) driven by a toothed wheel (5c) connected to a gear (5) which originates in a revolving-type screw (5a) driven by the external handle (10).
  • the mechanism is composed of a fixed part, (5) + (6), which is completely hidden, and of a mobile part, (2) + (3) + (4), which supports the actual cover.
  • the small, fixed driving trap (5a) can be equipped with a lock, in its small cover (2a) or, through a suitable worked nut (driven by a special wrench), directly in the head of the revolving screw.
  • Figure 4 instead shows, in the plan and sectional views, the mechanism in its three operating steps: closed, lifting and translation.
  • Figure 5 is an axonometric bottom view pointing out the translating-elevating mechanism.
  • Figure 6 shows a variation, always object of the present invention, where, in place of the small driving trap (5a), there is a prismatic turret (2b), adapted to contain therein an electromechanical motor (2c) for controlling the mechanism, namely to work as external terminal of mains services possibly running below the trap: electric energy, water, gas, compressed air, light, etc.
  • a prismatic turret (2b) adapted to contain therein an electromechanical motor (2c) for controlling the mechanism, namely to work as external terminal of mains services possibly running below the trap: electric energy, water, gas, compressed air, light, etc.
  • the telescopic guides (3) are equipped with an opening and closing stopper (not shown).
  • the cover (1) is equipped with a mechanism composed of a frame (2) for supporting the mobile cover (1) fastened onto telescopic guides (3) having a complete extraction, in turn fastened to a mobile lifting frame (4), equipped with wheels (4a'), connected through a cross member (4b') to an hydraulic jack (5a') placed inside a fixed frame (5') whose actuation, by means of an external hydraulic pump (10'), lifts the mobile cover (1).
  • the cover is equipped with a mechanism composed of a frame (2) for supporting the mobile cover (1) fastened to a ring (3") capable of performing a complete rotation around a vertical axis, in turn fastened to a mobile lifting concentric ring (4"), equipped with sliding trolleys (4a''), containing an hydraulic piston (5") having its cylinder oriented towards the cover (5a") and its piston oriented towards the support integral with the fixed frame (5b"), whose actuation, by means of an external hydraulic pump (10"), lifts the mobile cover (1).
  • the frame (2) for supporting the mobile cover (1) is fastened to a ring (32) capable of performing a complete rotation around the vertical axis, and integral, by means of a pair of ball bearings (34) with axial resistance, with a screw (30), whose rotation, controlled by an external handle, inside a threaded sleeve (36) integral with the fixed frame (6), lifts the mobile cover (1) and, when closing, through the recess (38), pressure-closes the cover (1) onto the frame (6) .
  • the cover (54) for manholes (52) of the present invention is equipped with a self-centering device designed to center the cover (54) by making the cover (54) itself fall inside the self-centering device due to gravity, the self-centering device being enabled by a vertically lifting and rotating mechanism on an edge (56).
  • the self-centering device consists in two semi-circular elements (51) welded onto a fixed frame (52) next to a vertical rib (53) of the cover (1, 54), capable of making a groove as wide as the rib (53), the semicircular elements (51) being suitable to house, when closing due to gravity, a part of the cover (1, 54) in the same accurate foreseen position (55), following actuations of the mechanism, as shown in Figure 17 .
  • the cover (54) of the present invention can be further equipped with a quick connection and precision positioning system, simply by abutment, of the vertically lifting and rotating mechanism on an edge (56), to the fixed frame of the man-hole (52).
  • a quick connection and precision positioning system consists in a circular element (57) integral with the mechanism, cutted at its end by two planes (58), mutually symmetrical with respect to the perpendicular plane to the element and passing by its center (59), wherein the planes (58) are symmetrically slanted, with respect to the element center, by 45° and rotated, together, by 30° with respect to the vertical, in order to make a bearing and holding plane with the corresponding and complementary sections of axis (60) integral with the fixed frame, as shown in Figure 18 .
  • the cover (54) of the present inventin can be further equipped with an hydraulic and smell sealing system for the cover (1, 54) actuated by a vertically lifting mechanism, the hydraulic and smell sealing system consisting in a continuous external channel (61), integral with the upper edge of the fixed frame (52) and a lip (62) of the mobile cover (54), coaxial with the channel (61) which, due to the vertical lifting movement of the cover (1, 54) impressed by the lifting mechanism (56), and due to a precision closing device, owing to the presence of a liquid or a gasket (63) inside the channel (61), generates the complete seal to smell and water for the whole system, as shown in Figure 19 .
  • the hydraulic and smell sealing system consisting in a continuous external channel (61), integral with the upper edge of the fixed frame (52) and a lip (62) of the mobile cover (54), coaxial with the channel (61) which, due to the vertical lifting movement of the cover (1, 54) impressed by the lifting mechanism (56), and due to a precision closing device, owing to the presence of a liquid or

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
EP20710627.9A 2019-02-18 2020-02-05 Cover for manholes equiped with a mechanism for lifting and rotating the cover Active EP3927901B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000002291A IT201900002291A1 (it) 2019-02-18 2019-02-18 Coperchio di botole o tombini dotato di un meccanismo per sollevare e traslare orizzontalmente il coperchio
PCT/IT2020/000012 WO2020170278A1 (en) 2019-02-18 2020-02-05 Cover for traps or manholes equiped with a mechanism for lifting and horizontally translating the cover

Publications (2)

Publication Number Publication Date
EP3927901A1 EP3927901A1 (en) 2021-12-29
EP3927901B1 true EP3927901B1 (en) 2024-03-13

Family

ID=66589745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20710627.9A Active EP3927901B1 (en) 2019-02-18 2020-02-05 Cover for manholes equiped with a mechanism for lifting and rotating the cover

Country Status (3)

Country Link
EP (1) EP3927901B1 (it)
IT (1) IT201900002291A1 (it)
WO (1) WO2020170278A1 (it)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1435638A (en) * 1921-04-04 1922-11-14 Samuel M Granger Trapdoor opener and closer
CH688157A5 (de) 1994-04-20 1997-05-30 Von Roll Ag Schachtabdeckung.
KR100922187B1 (ko) * 2007-11-27 2009-10-19 (주)천성애드컴 맨홀
KR20110026610A (ko) * 2009-09-08 2011-03-16 주식회사 기남금속 맨홀 덮개 개폐장치
ITBA20130067A1 (it) * 2013-10-11 2015-04-12 Giambattista DALENA Meccanismo di sollevamento e traslazione orizzontale di coperchi di chiusini o botole
US11473264B2 (en) * 2016-10-06 2022-10-18 Hubbell Incorporated Enclosure cover assemblies

Also Published As

Publication number Publication date
EP3927901A1 (en) 2021-12-29
WO2020170278A1 (en) 2020-08-27
IT201900002291A1 (it) 2019-05-18

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