EP1277884A2 - Versenkbarer Absperrpfosten - Google Patents

Versenkbarer Absperrpfosten Download PDF

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Publication number
EP1277884A2
EP1277884A2 EP02253242A EP02253242A EP1277884A2 EP 1277884 A2 EP1277884 A2 EP 1277884A2 EP 02253242 A EP02253242 A EP 02253242A EP 02253242 A EP02253242 A EP 02253242A EP 1277884 A2 EP1277884 A2 EP 1277884A2
Authority
EP
European Patent Office
Prior art keywords
bollard
retractable
throughway
hollow
barrier according
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Withdrawn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
EP02253242A
Other languages
English (en)
French (fr)
Other versions
EP1277884A3 (de
Inventor
Joseph Peter William Baker
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1277884A2 publication Critical patent/EP1277884A2/de
Publication of EP1277884A3 publication Critical patent/EP1277884A3/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Withdrawn legal-status Critical Current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
    • E01F13/044—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
    • 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
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/646—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection extensible, collapsible or pivotable

Definitions

  • This invention relates to retractable barriers for roads, passages or other throughways.
  • conventional retractable barriers for throughways either have an hydraulic operating mechanism or an electro-mechanical operating mechanism.
  • Hydraulic operating mechanisms are usually bulky, expensive, noisy in operation and have a tendency to leakage of the hydraulic fluid - which may have undesirable consequences.
  • Electro-mechanical operating mechanisms are usually screwdriven, have no mechanical clutch, are cumbersome to operate and fail adequately to seal working parts against moisture ingress.
  • a retractable road barrier proposed in GB-1275559 comprises one or more vertically slidable members actuated by one or more linear electric motors.
  • Such linear electric motors are expensive to install and their use in such apparatus gives rise to many practical difficulties, e.g. as sideways movement causes variations in the magnetic flux and hence in the transmitted power and/or if the vertical movement imparted by the linear motor is physically resisted thereby potentially leading to motor burn out.
  • a retractable throughway barrier comprising a casing to be embedded in the ground, a hollow bollard to be expelled outwardly of or retracted inwardly of the casing, said hollow bollard being provided with a member susceptible to magnetisation and provided with an upstanding surface; guide means between the casing and the bollard to guide the bollard during its aforesaid motions, and drive means within the hollow bollard to move the bollard as aforesaid, said drive means including a magnetic body magnetically coupled to the said member and having a surface in rolling contact with said upstanding surface.
  • the hollow bollard is of steel and has a rectangular, e.g. square, transverse cross-section.
  • one of the four walls of the hollow bollard defines the said member susceptible to magnetisation and its inner face defines said upstanding surface.
  • said guide means are roller guide means, which preferably includes four rollers engaging the four corner edges of the hollow bollard.
  • the drive means comprises a motor unit rotatably driving said magnetic body which is cylindrical and
  • a counterweighting mechanism is provided between the drive means and the bollard, preferably located internally of the bollard.
  • the retractable throughway barrier 10 comprises a hollow steel casing 12 that is embedded in the ground.
  • the casing 12 has an outwardly extending wider bottom flange 14 and an outwardly extending, wider upper chamber 16 the top of which is generally level with the top ground surface 18.
  • the steel casing 12 is keyed into a concrete foundation that surrounds it which, by entering the space between flange 14 and chamber 16, provides for a locked-in arrangement.
  • the throughway barrier 10 further comprises a hollow steel bollard 20 that is to be expelled outwardly of casing 12 (as intimated by broken lines in Fig 1) or retracted inwardly of the casing 12 ⁇ as shown in full lines in Fig 1.
  • the hollow steel bollard 20 has a rectangular, e.g. square, transverse cross-section and is driven outwards or inwards by drive means 22 engaging the inner face of one of the four walls (referenced 21) of the hollow bollard.
  • the wall 21 thus constitutes a member susceptible to magnetisation and its inner face defines an upstanding surface.
  • Guide means 15 are provided between the casing's upper chamber 16 and the bollard 20 to guide the bollard as it is expelled from or drawn into the casing 12.
  • the guide means 15 take the form of roller guide means which, in this example, comprise four upper rollers 17 of pulley-wheel shape, mounted in chamber 16 and engaging the four corner edges of the square or rectangular hollow bollard 20.
  • Further guide means comprise two pairs of rollers 19 mounted on depending flange-like extensions of the walls of the bollard 20 and engaging the walls of the casing 12.
  • Stop members 23 are mounted on the bollard 20 to extend laterally in opposite directions and by engagement of lateral inward extensions 13 of the casing 12 (at the base of chamber 16), jointly provide a limit to the upward extension of bollard 20.
  • a lock 36 is also provided to lock the bollard 20 in either its fully raised or fully lowered position.
  • the drive means 22 is mounted at the top of a column 28 within the hollow bollard 20 and, as already stated, is to move the bollard selectively inwardly and outwardly of the casing 12.
  • the drive means 22 comprises an electric, low voltage, high torque motor unit 24 ⁇ electrically supplied via an electric cable 26 ⁇ having an output shaft 47 connected to a non-circular (preferably square) cross-section adaptor 48 located in a bore 43 of like cross-section in a cylindrical magnetic body 45 which:
  • the arrangement provides for the drive means' magnetic body 45 to be thus magnetically coupled to the wall 21 and have the disc-like pole-plates 44,46 in rolling contact with the wall's upstanding inner surface.
  • the column 28 supporting the drive means 22 is provided with a degree of lateral flexibility. This is provided by a loose cotter-pin fixing of the column 28 to and between a pair of tabs 29 upstanding from base flange 14 and apertured at 27 to receive the cotter pin.
  • the axial adaptor 48 is a loose fit in the bore 43.
  • bore 43 is marginally greater ⁇ e.g. 1mm to 2mm (preferably 1.4mm) greater ⁇ than the side dimension of the axial adaptor 48 that transmits drive thereto and such as to permit the body to tilt or slew to a limited degree.
  • the square-section axial adaptor 48 may have a side dimension of 22.6mm (7 ⁇ 8 inch) so as to pass loosely or with clearance into the bore 43.
  • the two pole plates 44,46 are of substantially similar dimensions each having a periphery that, all round, is spaced outwardly away from the periphery of the magnetic body 45, e.g. of the order of 1 or 2mm (with a maximum of about 5mm). In one preferred embodiment the plates 44,46 are each 6mm thick and of 75mm nominal diameter.
  • the two pole plates 44,46 may be identical discs or as disclosed in UK Patent Application No.0019719.4, or may provide for a degree of keyed or geared connection between one of the pole plates and the wall 21, this keying being surmountable without giving rise to damage.
  • a counterweighting mechanism 30 is provided between the drive means 22 and the bollard 20, this mechanism being located internally of the bollard.
  • the mechanism 30 includes cables 33 attached to upper and lower hooks on the inner wall of bollard 20 and tensioned by the counterweighting mechanism 30.
  • the top of bollard 20 is provided by a cover plate 34 that is removable when it is necessary to access the apparatus' components internally of the bollard 20.
  • a brush-type strip seal 31 is mounted about an aperture in a top plate 32, the bollard in use extending and retracting slidingly past this seal 31.
  • the above-described and illustrated retractable bollard 20 can combine high operating speed at reasonable cost. It can be constructed to offer exceptional robustness, making it ideal for anti-ramraid and high security protection as well as for traffic control applications in vulnerable sites and be suitable for intensive industrial and commercial use.
  • the bollard 20 can be designed to rise and lower in 12 seconds through an operating height of 600mm.
  • a manual over-ride facility may be included which allows the bollard 20 to be both raised and lowered with the appropriate security key actuating lock 36.
  • the apparatus is automatically provided with limited “slip” in action ⁇ if the bollard meets with an obstruction ⁇ due to the magnetic drive transfer employed. This feature provides both internal protection for the mechanism and external safety for the user. The components can be automatically reset during the next operation, without need of user intervention.
  • Shock absorbing rubber adjuster blocks 50 are provided to enable the apparatus 10 to shrug off light impacts without damage. Also, by removing cover plate 34, the apparatus allows for manual release in case of power failure. Alternatively or additionally the apparatus may incorporate a power supply back-up and/or electronic systems to provide fail open, or fail secure or fail secure (i.e. closed) versions.
  • the fail secure arrangement permits operation in the event of a power supply failure and in a manner such that security is not compromised. For this the lock 36 remains closed but can be released with a key.
  • the fail safe arrangement provides that, in the event of a power supply failure, vehicles are not trapped within an enclosure closed by the retractable bollard but the latter can be lowered (retracted) and the system can be manually released (without a key).
  • the lock 36 releases if power is cut so that the bollard 20 can be forced down , i.e. retracted, against the the action of the magnetic drive means 22. It should be noted that such a fail safe operation is not possible with conventional electromechanical retractable bollards.
  • the illustrated apparatus 10 can provide a minimum maintenance, silent and virtually frictionless propulsion system that incorporates a smooth reliable mechanism in a highly compact form (so that the necessary depth of excavation is minimal).
  • the magnetic drive transfer provided by drive means 22 is, in effect, a built-in, drive limiting, magnetic clutch that can ensure user safety and protection of the mechanism.
  • the design of apparatus 10 provides for a virtually infallible "air pocket" sealing system that can protect the motor and mechanism in the event of flooding.
  • Modifications of the above-described and illustrated apparatus can include one or more of the following:

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
EP02253242A 2001-07-19 2002-05-09 Versenkbarer Absperrpfosten Withdrawn EP1277884A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0117626 2001-07-19
GB0117626A GB2377725A (en) 2001-07-19 2001-07-19 Retractable barrier

Publications (2)

Publication Number Publication Date
EP1277884A2 true EP1277884A2 (de) 2003-01-22
EP1277884A3 EP1277884A3 (de) 2003-12-10

Family

ID=9918812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02253242A Withdrawn EP1277884A3 (de) 2001-07-19 2002-05-09 Versenkbarer Absperrpfosten

Country Status (2)

Country Link
EP (1) EP1277884A3 (de)
GB (1) GB2377725A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421974A (en) * 2005-01-07 2006-07-12 Kenneth Marden Henfrey Operating mechanism for automatic retractable bollard
FR2930789A1 (fr) * 2008-04-30 2009-11-06 Orca Sarl Dispositif urbain mobile de blocage de circulation
DE102009054224A1 (de) * 2009-11-21 2011-05-26 AR&T, Applied Robot & Technologies UG (haftungsbeschränkt) Ein automatisches ein- und ausfahrbares Pfostensystem
WO2013081474A1 (en) * 2011-11-29 2013-06-06 Bully Boy Limited Retractable or removable bollard apparatus and system
WO2016160115A1 (en) * 2015-03-27 2016-10-06 Kenneth Thompson Railway passenger gate assembly
US20190368218A1 (en) * 2018-05-30 2019-12-05 Thomas Arthur Shaske Solid mast raiser system
CN112813887A (zh) * 2021-03-09 2021-05-18 湖州力卓机械设备技术开发有限公司 一种山区弯道用防撞墩

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB127559A (en) 1918-05-31 1920-04-15 Francis Salvator Benenati Improvement in Processes for Preserving Matter.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1275559A (en) * 1968-10-26 1972-05-24 Rotax Ltd Improvements relating to road barriers
CH644418A5 (de) * 1979-05-23 1984-07-31 Steinmanns A Erben Absperrvorrichtung mit einem versenkbaren absperrpfosten.
FR2752856B1 (fr) * 1996-09-04 1998-11-20 Boisson Patrick Automatisme Borne escamotable de reservation d'acces pour parking ou autre
FR2774404B1 (fr) * 1998-02-03 2003-06-20 Urbaco Dispositif urbain escamotable
GB9827241D0 (en) * 1998-12-10 1999-02-03 Baker Joseph P W Barrier apparatus
GB2338603B (en) * 1998-05-29 2002-07-17 Joseph Peter William Baker Motion transmission devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB127559A (en) 1918-05-31 1920-04-15 Francis Salvator Benenati Improvement in Processes for Preserving Matter.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421974A (en) * 2005-01-07 2006-07-12 Kenneth Marden Henfrey Operating mechanism for automatic retractable bollard
FR2930789A1 (fr) * 2008-04-30 2009-11-06 Orca Sarl Dispositif urbain mobile de blocage de circulation
DE102009054224A1 (de) * 2009-11-21 2011-05-26 AR&T, Applied Robot & Technologies UG (haftungsbeschränkt) Ein automatisches ein- und ausfahrbares Pfostensystem
WO2013081474A1 (en) * 2011-11-29 2013-06-06 Bully Boy Limited Retractable or removable bollard apparatus and system
WO2016160115A1 (en) * 2015-03-27 2016-10-06 Kenneth Thompson Railway passenger gate assembly
US20190368218A1 (en) * 2018-05-30 2019-12-05 Thomas Arthur Shaske Solid mast raiser system
US10731374B2 (en) * 2018-05-30 2020-08-04 Thomas Arthur Shaske Solid mast raiser system
CN112813887A (zh) * 2021-03-09 2021-05-18 湖州力卓机械设备技术开发有限公司 一种山区弯道用防撞墩

Also Published As

Publication number Publication date
EP1277884A3 (de) 2003-12-10
GB0117626D0 (en) 2001-09-12
GB2377725A (en) 2003-01-22

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