EP1983108A2 - Stange für aufhebbare Transitschranken, Transitschranke mit einer solchen Stange, Teilesatz und Verfahren zum Montieren einer solchen Stange - Google Patents

Stange für aufhebbare Transitschranken, Transitschranke mit einer solchen Stange, Teilesatz und Verfahren zum Montieren einer solchen Stange Download PDF

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Publication number
EP1983108A2
EP1983108A2 EP08101614A EP08101614A EP1983108A2 EP 1983108 A2 EP1983108 A2 EP 1983108A2 EP 08101614 A EP08101614 A EP 08101614A EP 08101614 A EP08101614 A EP 08101614A EP 1983108 A2 EP1983108 A2 EP 1983108A2
Authority
EP
European Patent Office
Prior art keywords
bar
bar section
section
liftable
bearing
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Withdrawn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
EP08101614A
Other languages
English (en)
French (fr)
Other versions
EP1983108A3 (de
Inventor
Massimo Annaratone
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.)
Olva Srl
Original Assignee
Olva Srl
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 Olva Srl filed Critical Olva Srl
Publication of EP1983108A2 publication Critical patent/EP1983108A2/de
Publication of EP1983108A3 publication Critical patent/EP1983108A3/de
Withdrawn legal-status Critical Current

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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
    • E01F13/06—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 by swinging into open position about a vertical or horizontal axis parallel to the road direction, i.e. swinging gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • B61L29/04—Gates for level crossings

Definitions

  • the present invention relates to a bar for liftable passage barriers in order, of the kind used for instance for controlling the access of motor vehicles to parkings, garages, highways, railway railroads, plants, shopping areas trade and the like.
  • the invention also relates to a passage barrier comprising such bar, to a kit for supplying and a method for installing such bar.
  • the bars for currently widespread liftable passage barriers have a length often ranging between about 4 and 7 meters, even if in some cases they can reach 10-12 meters and even more.
  • a currently adopted solution is obtaining the bars from cutting semifinished merchant bars by the desired length; such merchant bars are generally supplied with a standard length of 6,5 meters; however merchant bars with different -and even greater- length can be obtained on order, but in this way there is a remarkable production of off-cut bar sections, having such lengths that they cannot be re-used.
  • a possible solution to such drawback is stocking up on and store semifinished section bars with a richer gamut of lengths, such as 6,5 meters, 7,5 meters, 8,5 meters, 9,5 meters, 10,5 meters; in this way less off-cut bars are produced, but the needed stocks and the supply difficulties increase.
  • An object of the present invention is providing a bar for liftable passage barriers, which is an improvement with respect to the known bars, with reference to the problems previously set forth.
  • the second bar section is provided with an inner sliding block arranged for resting against the inner walls of the first bar section.
  • the first bar section is provided with a bearing, and second bar section is arranged for resting against the bearing.
  • the bearing is fixed at an end of the first bar section.
  • the bearing has a substantially annular or tubular shape.
  • the inner sliding block and/or the bearing are made of plastic material.
  • the axial blocking system comprises an insert file inserted in the second and/or the first bar section, or protruding towards the inside of the first bar section.
  • the insert comprises a screw and/or pin and/or plug and/or nail and/or key, and/or a punching and/or drawing and/or protrusions made on the wall of such section.
  • the file is inserted in the inner sliding block.
  • a marking is provided, indicating from the outside the length of the portion of such second bar inserted in the first section of bar.
  • such marking comprises a graduated scale, a series or array of signs and/or figures and/or characters and/or notches and/or protrusions, a plurality of signs and/or figures and/or characters and/or notches and/or protrusions.
  • such method comprises the step of blocking the mutual axial sliding of the first and second bar section, by inserting the insert in the second and/or first bar section, or making it to protrude towards the inside of the first bar section.
  • Figures 1 , 2 relate to a particular embodiment of a liftable passage barrier according to the present invention.
  • Such barrier referred to with the overall reference 1, comprises a base, or upright, 3 and a liftable bar 5.
  • the base or upright 3 is provided - for example by housing inside itself- with a drive which lifts and lowers the bar 5, by rotating the latter - arrow F- around a horizontal axis or an axis suitably arranged in the space.
  • the bar 5 comprises a first and a second bar section - references 7, 9-, wherein the first bar section 7 has substantially hollow cross-sections, and the first 7 and second bar section 9 are arranged so as to allow the second bar section 9 to be axially inserted into the first bar section 7 so as to form a telescopic assembly.
  • the first 7 and second bar section 9 are obtained from two crops of tubular section bars having circular cross-sections: the circular cross-section is particularly advantageous due to its optimum wind strength and in general due to its axially symmetrical strength to external stresses.
  • an inner sliding block 11 is fixed to an end of the second bar section 9 ( Figures 2, 3 ); such sliding block 11 has a substantially axially symmetrical shape and forms on its sides a side resting surface 13 arranged for resting against the inner walls of the first bar section 7.
  • the shape of the side resting surface 13 is substantially complementary to the inner cavity of the first bar section 7, and/or however such dimensions for being able to slide along such cavity with small clearances, for example with clearances of about 0,05-0,1 millimeter, or possibly even with a light interference.
  • a light interference must be understood an interference allowing the bar section 9 be fitted in the bar section 7 with a thrust not greater than 190-290 N, and even more preferably not greater than 150-200 N; such thrust can still be applied with a hand by an operator.
  • the inner sliding block 11 is further provided with a first fixing portion 15 - in the present embodiment having a substantially cylindrical shape-, through which the sliding block 11 is inserted in and firmly fixed to the end of the second bar section 9.
  • the inner sliding block 11 can be firmly blocked at an end of the section 9 through one or more blocking screws 25, or in other ways such as fitting, screwing, riveting, gluing, welding.
  • a bearing 17 is fixed to the free end of the first bar section 7; such bearing 17 is provided with a through cavity for sliding 19 - Figure 4 - into which a second bar section 9 can slide.
  • the bearing is substantially shaped as a tubular bushing.
  • the through cavity for sliding 19 has a shape substantially complementary to the external surface of the second bar section 9, and/or however dimensions such to allow the second bar section 9 to slide with small clearances, or possibly even with a light interference.
  • the bearing 17 is further provided with a second fixing portion 21 - in the present example having a substantially cylindrical shape-, through which it is inserted in and firmly fixed - for example through fitting, screwing, riveting, gluing, welding- to the end of the first bar section 7.
  • the inner sliding block 11 and/or the bearing 17 are made of plastic material.
  • plastic material can for instance DELRIN, which has a low coefficient of friction and can be easily chip machined.
  • the inner sliding block 11 and the bearing 17 can be manufactured for instance by turning, milling or other kinds of machining, or still by forming.
  • Such blocking screws 23A, 23B can be for instance self-tapping screws.
  • the screws 23A are screwed through the bearing the 17 and through both walls of the two sections 7 and 9.
  • the screws 23B are screwed through the wall of the first section 7 only and in the inner sliding block 11, by the side resting surface 13, where the clearances with the first section are at minimum.
  • the telescopic bar according to the present invention allow manufacturers of bars 5 to remarkably reduce stocks and stock items, because stocks of a few standardized lengths LT1, LT2 of sections 7 and 9 are sufficient.
  • LT1 and/or LT2 can range from about 2,5 meters to about 5 meters. More preferably LT1 can range from about 3,5 meters to about 4 meters. More preferably LT2 can range from about 3,25 meters to about 3,5 meters.
  • Telescopic bars 5 can be supplied and shipped as a fitting kit on the place where the liftable barrier must be installed, wherein the kit can comprise two bar sections 7, 9 having suitable lengths LT1, LT2, and possibly their relative sliding block 11 and bearing 17, so as to most simplify the assembling operations on the installation place.
  • a marking (not shown) can be provided, which shows from the outside the length LB of the portion of such section 9 inserted in the first section 7.
  • marking can be for instance a graduated scale, a series or array of signs, figures, characters, notches, protrusions or still other signs; the marking can be previously printed or sticked on the section 9.
  • marking can be a graduated scale in centimeters or inches arranged along the section 9 so that the indication in centimeters or inches of the length LB of the portion of such section 9 inserted in the first section 7 happens to be aligned with the edge of the bearing 17, and can immediately be read: that allows to find quicker the area where the outer bar section 7 must be drilled on order to screw the screw- or screws- 23B.
  • the present invention allows the mass production of sections 7, 9, starting from semifinished merchant bars having standardized length -such as light alloy- and non-light alloy metal section bars- be easier optimised, so as to reduce at minimum both a) the off-cut bar sections remaining from the cutting -e.g. sawing- of the merchant section bars having standard length and provided from the drawing mills, and b) the stocks of such semifinished merchant bars, in particular the length gamut a manufacturer of liftable barriers needs to stock: in fact with the telescopic barriers according to the present invention a substantially infinite gamut of lengths LTOT can be obtained, starting from a limited number of lengths LT1, LT2 of the bar sections 7, 9.
  • Figures 5, 6 relate to a second embodiment of the invention, wherein the first and second bar section (not shown) are obtained from section bars having square or rectangular cross-sections, and accordingly the inner sliding block 11' and bearing 17' as well have substantially square or rectangular cross-sections.
  • the sides 13' of the inner sliding block 11', and the surface of the through cavity for sliding 19' -the latter formed in the bearing 17'- is provided with a plurality of crests or ribbings 110, 170 respectively, arranged longitudinally to the sliding direction of the first and second bar sections.
  • Such crests or ribbings are arranged in such way that, when the second bar section is inserted in the first section, the crests or ribbings 110 interfere with, and are slightly drawn by- the inner walls of the first bar section, and the crests or ribbings 170 interfere with -and are slightly drawn by- the external surface of the second bar section.
  • a telescopic connection is provided, having a null clearance between the two bar sections, even if allowing the second section bar be inserted by hand into the first section bar.
  • the crests or ribbings 110, 170 can clearly be replaced by other kinds of protrusions arranged for being drawn, such as embossings or studs.
  • the bearing 17 can have non-annular or non axially symetrical shape, and be embodied for example as one or more pads having more or less parallelepipedal shape, against which the external surface of the bar section 9 can rest.
  • Sections 7, 9 can clearly have not circular cross-sections -such as rectangular or polygonal-, and the sliding block 11 and the bearing 17 can clearly have non axially symmetrical shapes as well.
  • the mutual axial sliding between the first 7 and the second bar section 9 can be blocked not only through the screws 23A, 23B but also through other kinds of inserts such as nails, pins, plugs, keys, or still making protrusions - p.es by pressing, embossing or punching-, on the wall of the first section 7, which protrude in its inner cavity towards the second bar section 9.
  • inserts such as nails, pins, plugs, keys, or still making protrusions - p.es by pressing, embossing or punching-, on the wall of the first section 7, which protrude in its inner cavity towards the second bar section 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Bridges Or Land Bridges (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
EP08101614A 2007-03-13 2008-02-14 Stange für aufhebbare Transitschranken, Transitschranke mit einer solchen Stange, Teilesatz und Verfahren zum Montieren einer solchen Stange Withdrawn EP1983108A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000187A ITTO20070187A1 (it) 2007-03-13 2007-03-13 Sbarra per barriere di transito sollevabili, barriera di transito comprendente per sbarra, kit per la fornitura e metodo per l'installazione di tale sbarra.

Publications (2)

Publication Number Publication Date
EP1983108A2 true EP1983108A2 (de) 2008-10-22
EP1983108A3 EP1983108A3 (de) 2010-10-20

Family

ID=39731131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08101614A Withdrawn EP1983108A3 (de) 2007-03-13 2008-02-14 Stange für aufhebbare Transitschranken, Transitschranke mit einer solchen Stange, Teilesatz und Verfahren zum Montieren einer solchen Stange

Country Status (2)

Country Link
EP (1) EP1983108A3 (de)
IT (1) ITTO20070187A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107524106A (zh) * 2017-10-25 2017-12-29 成都云凯软件有限责任公司 一种用于社区车辆通行控制的道闸
CZ307815B6 (cs) * 2018-04-23 2019-05-22 AŽD Praha s.r.o. Pevnostní spoj kompozitních tenkostěnných segmentů, zejména dílů břevna závor pro železniční přejezdy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1710209A (zh) * 2005-07-27 2005-12-21 江西百胜门控设备有限公司 挡车器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825192A (en) * 1987-11-24 1989-04-25 Wells Kenneth A Retractable guard for vehicles
US6618993B2 (en) * 2001-03-19 2003-09-16 Thomas J. Burke Railroad grade crossing assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1710209A (zh) * 2005-07-27 2005-12-21 江西百胜门控设备有限公司 挡车器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107524106A (zh) * 2017-10-25 2017-12-29 成都云凯软件有限责任公司 一种用于社区车辆通行控制的道闸
CZ307815B6 (cs) * 2018-04-23 2019-05-22 AŽD Praha s.r.o. Pevnostní spoj kompozitních tenkostěnných segmentů, zejména dílů břevna závor pro železniční přejezdy

Also Published As

Publication number Publication date
EP1983108A3 (de) 2010-10-20
ITTO20070187A1 (it) 2008-09-14

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