EP2450488A2 - Versenkbarer Mast für Absperrvorrichtungen - Google Patents

Versenkbarer Mast für Absperrvorrichtungen Download PDF

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Publication number
EP2450488A2
EP2450488A2 EP11405351A EP11405351A EP2450488A2 EP 2450488 A2 EP2450488 A2 EP 2450488A2 EP 11405351 A EP11405351 A EP 11405351A EP 11405351 A EP11405351 A EP 11405351A EP 2450488 A2 EP2450488 A2 EP 2450488A2
Authority
EP
European Patent Office
Prior art keywords
fixed element
sliding element
sliding
retractable mast
fixed
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
EP11405351A
Other languages
English (en)
French (fr)
Other versions
EP2450488B1 (de
EP2450488A3 (de
Inventor
Luca Rogantini
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.)
Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP2450488A2 publication Critical patent/EP2450488A2/de
Publication of EP2450488A3 publication Critical patent/EP2450488A3/de
Application granted granted Critical
Publication of EP2450488B1 publication Critical patent/EP2450488B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
    • E01F13/044—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
    • E01F13/046—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts

Definitions

  • the present invention relates to the field of masts for barriers and in general to retractable masts, able to be used for permitting or preventing the access to public or private places.
  • the conventional masts for barriers are made of the most rigid materials, such as cement, steel, stone or wood; their cross-section can be round or cornered, more rarely also of other shapes.
  • These masts are rigid, made of a single piece, and, if necessary, they must be completely extracted from the anchorage to the ground.
  • Retractable masts are also known, and they solve many barrier problems. They are suitable for roads and squares which are freed from traffic only for limited periods of time, pedestrian areas, market squares, parking areas, garage entrances, arched gates, etc. They can be positioned in indoor or outdoor spaces and they can serve as boundary poles, barrier shafts, or as mast for barriers with ropes, bands or similar.
  • the retractable masts comprise two main elongated and hollow elements, the one sliding with respect to the other.
  • one of the two elements is anchored to the ground, and the other one slides from a retracted or underground position and an extracted or raised position with respect to the other element.
  • a space or gap is present.
  • Such devices are for example described in US 6,345,930 B1 and in GB 2210091A .
  • US 6,345,930 B1 describes a retractable column with a simple structure, made of stainless steel.
  • This column is generally of a cylindrical shape and, when in a lowered position it is housed within a sleeve under the ground level. In an active position, the column can be grasped with a handle and manually drawn until only a lower portion is underground.
  • the lower portion of the cylindrical column has a spiral groove, cooperating with spiral grooves present on the upper portion of the sleeve, when the little mast is turned and raised towards a suitable point.
  • the column has a safety lock, in order to permit to the little mast to be raised from a lowered position to an active position, and a double block, preventing an easy lowering of the same by malicious people.
  • GB 2210091 describes a traffic column made of a base, positioned in a hole in the ground and supporting in a telescopic way a retractable and extendable element.
  • the element can be fully retracted in the ground, or raised and positioned in a raised position with respect to the base, by means of a pin and of at least one groove cooperating with the base.
  • the two main elements of the mast have a mutual space or gap.
  • This aspect from one hand permits an easy and smooth mutual sliding of the two elements, and on the other hand it leads to problems of water infiltration, when such masts are generally positioned in outdoor places and environments, which are exposed to the weather. Such water or moisture infiltrations cause the formation of rust, and facilitate the corrosion, leading to a rapid decay, deterioration and aging of the portions forming the retractable mast. This makes frequent and expensive maintenance and repairing operations necessary. This leads to a reduction of the useful life of the mast, which then must necessarily be substituted at rather regular and short time intervals.
  • the Applicant has found that, by adopting a space of small and reduced dimensions among the mutually sliding portions of the mast and by applying at the same time a watertight device, suitably sized and positioned, it is possible to maintain a simple and smooth sliding between the parts, by preventing at the same time the penetration of water and moisture and also of other liquids into the mast.
  • the invention relates to a retractable mast for barriers, comprising:
  • the retractable mast also has a watertight device and a radial distance less than 5 mm between the fixed element and the sliding element.
  • the present invention in the aforesaid aspect, can have at least one of the preferred features later described.
  • said average radial distance is less than 2 mm.
  • said sliding element has at least one relief valve, in order to permit the exit of air during the sliding of said sliding element from said second position to said first position. This permits a translating movement of the element, which is simple, linear and without interruptions, with a minimum energy consumption.
  • said fixed element has a duct, connecting the space with the outside of said fixed element. This permits to obtain a suitable evacuation of the air towards the outside of the mast.
  • said relief valve is positioned in the upper part of the sliding element, for more than 50% of its total extension.
  • said sealing device has at least two sealing elements, placed in the upper end of said fixed element and spaced apart in the direction of the longitudinal axis. This has the advantage to further increase the sealing of the device.
  • said fixed element has at least two housings for said at least two sealing elements.
  • said sliding element has at least one widened cross-sectional portion, placed in its lower part. This choice permits to further reduce the space between the sliding element and the fixed element, so assuring a safe blocking of the sliding element in the extracted position.
  • said radial distance (R) is less than 1 mm.
  • said sliding element has, at its upper part, a first flared portion, able to cooperate with a second flared portion, corresponding to the fixed element in said first position, so that said average distal length is less than 1,5 mm.
  • the advantage of this preferred embodiment is to permit a good blocking of the elements in the lowered position, in particular when the sliding element is completely housed inside the fixed element. At the same time a perfect levelling of the mast with the ground is obtained.
  • said fixed element has at least one external coating element. This permits to further protect the mast from external agents in order to use the same in any kind of ground.
  • said retractable mast has a second device, interposed between said external coating element and said fixed element.
  • said sliding element has a handle at its upper part, able to be manually grasped, in order to translate said sliding element with respect to said fixed element.
  • a retractable mast for barriers is identified with the numeral reference 1.
  • the retractable mast 1 for barriers according to the present invention has:
  • the fixed element 2 extends along a longitudinal axis a, for a total extension E.
  • the fixed element 2 and the sliding element 3 are coupled in such a way that the sliding element 3 can translate inside the fixed element 2 along the longitudinal axis a, from a first position p1, shown in figure 1 , in which it is housed in the fixed element 2, to a second position p2, shown in figure 1 c , in which it is extracted from the fixed element 2.
  • the sliding element 3 is housed in the fixed element 2, for a portion equal to at least 70% of its total extension E. Still more preferably, as shown in Fig.1 a , in the first position p1 the sliding element 3 is completely housed in the fixed element 2 in order not to protrude with respect to the latter.
  • the sliding element 3 in the second position p2 the sliding element 3 axially protrudes with respect to the fixed element 2 for a portion equal at least to 80% of its total extension.
  • the sliding element 3 has at least one groove 5
  • the sliding element 3 has at least a guide pin 7, cooperating with the groove 5.
  • the groove 5 has at least two branches D1, D2, one branch D2 of the two branches D1, D2 being shorter than the other branch D1.
  • the different extension of the two branches D1 and D2 permits to fix the sliding element in a first position p1 and in a second position p2.
  • the sliding element 3 when the guide pin 7 engages with the branch D2 and rests on its bottom as in fig.1a , the sliding element 3 is in the first position p1, and alternatively when the guide pin 7 is rotated and engages with the branch 2 and rests on its bottom, the sliding element 3 is in the second position p2.
  • the fixed element 2 as it is better shown in figure 2 , is also placed with respect to the sliding element 3, in order to form a gap between the two elements, substantially for the entire extension E of the fixed element 2.
  • the gap I is defined by an average radial distance R between the fixed element 2 and the sliding element 3, in particular between the inner surface of the fixed element 2 and the outer surface of the sliding element 3.
  • the arithmetic distance must be understood between the inner surface of the fixed element 2 and the outer surface of the sliding element 3 when varying the extension of the fixed element in a position p1, each distance being measured in a plane orthogonal to the axis a.
  • the average radial distance R is less than 5 mm and the retractable mast 1 has at least one sealing device 15 interposed between the fixed element 2 and the sliding element 3.
  • the average radial distance R is less to 2 mm.
  • the fixed element 2 and the sliding element 3 have a cross-section, transversal to the substantially circumferential axis a and the gap has a cross-section substantially with a circumferential ring.
  • the sliding element 3 has at its upper flared part 3s a first flared portion 16, able to cooperate with a second flared portion 17 corresponding to the fixed element 2, at the first position p1.
  • a similar choice permits a good blocking of the sliding and fixed elements in the lowered position, in particular when the sliding element is completely housed in the fixed element. At the same time, a perfect levelling of the mast with the ground is obtained.
  • the first flared portion 16 can cooperate with the second flared portion 17, so that the average radial distance R of such length is less than 1,5 mm and so consistently reduces the possibility of liquids entering into the gap I.
  • the sliding element 3 has at least one portion 18 with a widened lateral portion, at its lower part 3i.
  • the portion 18 with the widened lateral portion permits to block the extraction of the sliding element 3 with respect to the fixed one 2, in particular when the first one has reached the first position p1 shown in figure 1 c.
  • This choice permits to further reduce the space between the sliding element and the fixed element, so assuring a safe blocking of the sliding element in the extracted position.
  • said average radial distance R is less than 1 mm.
  • the portion 18 with a widened transversal section is placed at approximately 1/5 of the total extension L of the sliding element 3, starting from its lower end 3i.
  • the sliding element 3 has a second portion 19 with a widened transversal portion, spaced from the portion 18 and placed at its lower end 3i.
  • the sliding element 3 Apart from the flared portion 16 and the portions 18,19 with a widened transversal section, the sliding element 3 has a substantially constant section.
  • the sliding element 3 in order to permit the exit of air during the sliding of the sliding element 3 from the second position p2 to the first position p1, and consequently a smooth mutual sliding of the two elements 2,3 the sliding element 3 has at least one relief valve 20.
  • the relief valve 20 is placed in the upper part of the sliding element 3, for up to 50% of its total extension L.
  • the relief valve 20 connects the inside of the sliding element 3 with the gap I whereas a duct 21, provided on the fixed element 2 connects the gap I with the outside of the fixed element 2.
  • the sealing device 15 is provided at the upper end 3s of the fixed element 2.
  • the sealing device 15 has at least two sealing elements 15', 15" placed at the upper end 3s of the fixed element 2 and axially spaced in the direction of the longitudinal axis a.
  • the sealing elements 15',15" made of a waterproof material seal the gap I between the fixed element 2 and the sliding element 3, while permitting the sliding of the element 3 with respect to the fixed element 2.
  • the sealing elements 15', 15" have an annular extension around the sliding element 3 and are concentrically placed and axially spaced along the axis a of the fixed element 2.
  • the fixed element 2 has at least two housings 22', 22" for the two sealing elements 15', 15"
  • the two housings 22', 22" are spaced and placed along the axis a.
  • the two housings 22', 22" face the gap I between the fixed element 2 and the sliding element 3.
  • the fixed element 2 has at least one external coating element 23, made of plastic, able to isolate and protect the fixed element 2 from water or other liquids.
  • the external coating element 23 has a cylindrical extension, but preferably it does not extend along the entire fixed element 2, but only of one portion of same, for example approximately 90% of its total extension E.
  • the retractable mast 1 has a second sealing device 24 interposed between said external coating element 23 and said fixed element 2.
  • the second sealing element 24 is placed at the upper interface between the external coating element 23 and the fixed element 2.
  • the sliding element 3 has a handle 25 at its upper portion 3s and in particular at the upper end of the latter.
  • the handle can be grasped manually, in order to translate the sliding element 3 with respect to the fixed element 2.
  • the handle 25 can rotate between a closed position in which it disappears in a cavity made in the upper portion 3s of the sliding element 3, and an extracted position in which it substantially arises parallel to the axis a.
  • the upper portion 3 of the fixed element 3 is made of two bodies 26, 27 mutually bound by means of a thread 28.
  • a sealing element 29 is placed between the bodies 26,27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Sliding Valves (AREA)
EP11405351.5A 2010-11-05 2011-11-03 Versenkbarer Mast für Absperrvorrichtungen Active EP2450488B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01855/10A CH704056B1 (it) 2010-11-05 2010-11-05 Palo a scomparsa per sbarramenti.

Publications (3)

Publication Number Publication Date
EP2450488A2 true EP2450488A2 (de) 2012-05-09
EP2450488A3 EP2450488A3 (de) 2016-08-31
EP2450488B1 EP2450488B1 (de) 2021-07-07

Family

ID=45218613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11405351.5A Active EP2450488B1 (de) 2010-11-05 2011-11-03 Versenkbarer Mast für Absperrvorrichtungen

Country Status (2)

Country Link
EP (1) EP2450488B1 (de)
CH (1) CH704056B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2008940C2 (nl) * 2012-06-05 2013-12-09 Vcp Streetcare B V Zuilstelsel en zuil.
JP2015151812A (ja) * 2014-02-18 2015-08-24 株式会社大畠製作所 駐車ポール

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210091A (en) 1987-09-21 1989-06-01 Eric Claud Bailey Traffic bollard
US6345930B1 (en) 2000-03-30 2002-02-12 Parvis Mohassel Manually operable retractable bollard

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086430A (en) * 1959-01-28 1963-04-23 David T Emmel Traffic control equipment
FR1335604A (fr) * 1962-07-11 1963-08-23 Mât télescopique
CA2088513C (en) * 1990-08-06 2001-04-03 David H. Roper Pop-up traffic control device
US5481828A (en) * 1994-10-03 1996-01-09 Kentrotas; Andreas Security post for automobiles
US5683176A (en) * 1995-04-07 1997-11-04 Clendenin; Patrick B. Retractable lighting assembly
DE19643815C1 (de) * 1996-10-30 1997-11-20 Butting H Gmbh & Co Kg Absperrvorrichtung für Verkehrsflächen
GB2323617A (en) * 1997-03-04 1998-09-30 Graphic Precision Engineering Telescopic Post
DE29901108U1 (de) * 1999-01-23 1999-10-14 Schroif, Heinz, Dipl.-Designer, 52076 Aachen Versenkbarer Absperrpoller
GB2346640B (en) * 1999-02-10 2003-05-21 George James Wyers Extendible posts
US6626606B1 (en) * 2000-08-04 2003-09-30 National Sign & Signal Co. Retractable pylon arrangement
US7101112B2 (en) * 2004-04-27 2006-09-05 Robert Burns Security barrier
NL1028889C1 (nl) * 2005-04-28 2006-10-31 Producon C V Inrichting voor het beveiligen van machines en werktuigen tegen aanrijden door interne transportmiddelen (karren, wagens, etc.) en voor het geleiden van interne transportmiddelen (karren, stapels kratten op dolly's, etc.) in een sanitaire en stootvaste uitvoering.
US7244075B2 (en) * 2005-08-04 2007-07-17 Stadler David M Telescoping bollard with screw drive
US7367746B2 (en) * 2005-09-28 2008-05-06 Koei Industry Co., Ltd. Lifting pole apparatus for traffic control
US7481599B2 (en) * 2006-05-04 2009-01-27 Stice David L Bollard type barrier assembly
CH700820B1 (de) * 2007-06-01 2010-10-29 Luca Rogantini Versenkbarer Pfosten.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210091A (en) 1987-09-21 1989-06-01 Eric Claud Bailey Traffic bollard
US6345930B1 (en) 2000-03-30 2002-02-12 Parvis Mohassel Manually operable retractable bollard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2008940C2 (nl) * 2012-06-05 2013-12-09 Vcp Streetcare B V Zuilstelsel en zuil.
JP2015151812A (ja) * 2014-02-18 2015-08-24 株式会社大畠製作所 駐車ポール

Also Published As

Publication number Publication date
EP2450488B1 (de) 2021-07-07
EP2450488A3 (de) 2016-08-31
CH704056B1 (it) 2014-07-15
CH704056A1 (it) 2012-05-15

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