EP1948869A1 - Abbrechbare basis für strassenpfosten - Google Patents

Abbrechbare basis für strassenpfosten

Info

Publication number
EP1948869A1
EP1948869A1 EP06812815A EP06812815A EP1948869A1 EP 1948869 A1 EP1948869 A1 EP 1948869A1 EP 06812815 A EP06812815 A EP 06812815A EP 06812815 A EP06812815 A EP 06812815A EP 1948869 A1 EP1948869 A1 EP 1948869A1
Authority
EP
European Patent Office
Prior art keywords
base according
bolts
breakaway base
breakaway
rollers
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
EP06812815A
Other languages
English (en)
French (fr)
Other versions
EP1948869B1 (de
EP1948869A4 (de
Inventor
Oddbjörn NES
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.)
Saferoad AS
Original Assignee
Saferoad AS
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 Saferoad AS filed Critical Saferoad AS
Publication of EP1948869A1 publication Critical patent/EP1948869A1/de
Publication of EP1948869A4 publication Critical patent/EP1948869A4/de
Application granted granted Critical
Publication of EP1948869B1 publication Critical patent/EP1948869B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • E01F9/631—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 specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
    • E01F9/635—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 specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by shearing or tearing, e.g. having weakened zones

Definitions

  • the invention relates to a breakaway base according to the introductory part of claim 1 , for road columns, particularly road columns for roads with high velocity and heavy traffic.
  • the main object of the invention is to ensure that the breakaway base releases even when a car impacts it at some distance from the base.
  • a further object is to provide a breakaway base which is not liable to siezing and decreasing breakaway function due to long service and weathering.
  • rollers particularly of metal can advantageously be used as friction reducing elements.
  • Multiple rollers are arranged between the dishes to reduce the friction, and the dishes having the friction reducing elements may be circular to arrange the rolls optimally along the edge, and make the dishes more resistant to bending of the edges.
  • the novel breakaway base has a short straight edge parallel to the road/direction of traffic, so rollers are perpendicular to the road and enhance the effect at a collision. Tests have also been conducted with rollers arranged parallel to the road, also giving reduced friction compared to prior art breakaway bases.
  • Figure 1 shows an exploded perspective view of an embodiment of the invention
  • Figure 2 show a cross sectione elevation view with an axial section of the socket with the breakaway base of Figure 1 ,
  • Figure 3 show a plan view of a sheet sheet according to the invention
  • Figure 4 shows an alternative spacer sheet with roller holders.
  • the main elements of Figure 1 are a road column 11 , a socket 12 provided for mounting on a fundament (not shown).
  • the road column 11 is manufactured of a conical or stepwise tapered steel tube 13 with a foot flange 14 welded on the lower end of the steel tube 13 with three supporting webs 15. For short road columns for low loads, the webs is may be omitted.
  • the flange 14 has a straight part 16 intended, in use, to be parallel to the road edge, and three notches 17 spaced 120° around the circumference. The notches 17 are intended to accomodate bolts 18 to be described in the following.
  • the flange 14 can also be a closed dish.
  • the socket 12 has a base dish 19, in the illustrated embodiment quadratic, with a bore hole 20 at each corner for fastening to a fundament not shown, e.g. of concrete, with imbedded bolts.
  • the base dish 19 carries a carrier plate 21 on a tubular collar 22, said parts being joined by welding.
  • the carrier plate 21 of this embodiment has a mating design of notches 23 as the foot flange and a corresponding flange design. This implies having a straight edge 24.
  • the nuts for fastening the bolts 18 are designated 25, while the nuts for fastening the base dish 19 have reference numeral 31.
  • rollers 26 Intermediate the foot flange 14 and the carrier plate 21 are embedded series of rollers 26 of steel or similar pressure resistant material.
  • the rollers 26 are arranged in openings 28 in an intermediate or spacer sheet 27 shown in Figure 3.
  • the rollers may have a diameter of 6 mm.
  • the intermediate sheet 27 is relatively thin, e.g. 0,7 mm, and is provided with holes 29 for the bolts 18.
  • the purpose of the intermediate sheet 27 is twofold,: 1) to keep the position of the bolts until the sideward load on the breakaway base exceeds a certain level, tearing off the intermediate sheet, and additionally 2) to keep the rollers 26 in place.
  • the rollers 26 can be replaced by balls of a hard material.
  • the design of the openings 28 and thus of the arrangement of the rollers 26, is shown in Figure 3.
  • the rollers 26 are arranged with the axis perpendicularly to the straight edge 30, which, when the intermediate sheet 27 is mounted, will be parallel to the road edge.
  • the friction reducing elements preferably are arranged in multiple groups, e.g. three groups, distributed over the face of contact.
  • FIG. 2 shows how the rollers 26 are clamped between the foot flange 14 and the carrier plate 21.
  • This embodiment has an annular socket 19 with a bevelled inner edge 32 joining a central collar 33.
  • the number of rollers is determined by the maximum bending torque, to avoid pressing of the rollers into the dishes or the rollers being deformed.
  • the rollers are fixed by wax or a glue sheet. This will make the mounting easier.
  • Road columns with breakaway base according to the invention are normally delivered factory mounted, to ensure proper mounting and right make up torque of the bolts.
  • Figure 4 shows an embodiment of an intermediate sheet 34 with rectangular openings 35 in a corresponding symmetrical arrangement as in Figure 3, for rollers 36. In this case groups of four rollers 36 are inserted in cassette frames or roller holders 37 arranged in the openings 35. This makes the transport of the rollers and the mounting of the rollers in the breakaway base easier and less demanding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Connection Of Plates (AREA)
EP06812815.6A 2005-11-07 2006-11-07 Abbrechbare basis für strassenpfosten Active EP1948869B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20055220A NO325205B1 (no) 2005-11-07 2005-11-07 Avskjaeringsledd for vegmast
PCT/NO2006/000399 WO2007053040A1 (en) 2005-11-07 2006-11-07 Breakaway base for road columns

Publications (3)

Publication Number Publication Date
EP1948869A1 true EP1948869A1 (de) 2008-07-30
EP1948869A4 EP1948869A4 (de) 2014-05-07
EP1948869B1 EP1948869B1 (de) 2016-04-06

Family

ID=35432914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06812815.6A Active EP1948869B1 (de) 2005-11-07 2006-11-07 Abbrechbare basis für strassenpfosten

Country Status (4)

Country Link
EP (1) EP1948869B1 (de)
DK (1) DK1948869T3 (de)
NO (1) NO325205B1 (de)
WO (1) WO2007053040A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400445A (zh) * 2010-09-08 2012-04-04 韩国建设技术研究院 带有夹持装置的滑动基部结构
GB2509776B (en) * 2013-01-15 2020-07-08 Ritherdon & Company Ltd Passively safe roadside cabinet
NO339575B1 (no) * 2015-06-08 2017-01-09 Ferrozink Trondheim As Sammenstilling for justerbar festing av stolpe, bjelke eller lignende til fundament.
NO343828B1 (en) * 2016-06-14 2019-06-17 K Manger Konsulenttjenester As An adjustment device for a post foundation that shall be inserted into the ground, method for adjusting the position of a post connected to an adjustment device, and the use of said adjustment device.
GB2621152B (en) * 2022-08-03 2025-04-02 Francis & Lewis International Ltd Stub bypass apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926592A (en) * 1989-02-10 1990-05-22 Unistrut International Corp. Breakaway sign post coupling
US6422783B1 (en) * 2000-12-29 2002-07-23 Northwest Pipe Company Breakaway post slipbase
US6540196B1 (en) * 2002-02-06 2003-04-01 Western Highway Products, Inc. Break away support structure coupling
US6868641B2 (en) * 2002-05-01 2005-03-22 Michael D. Conner Breakaway post base

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO2007053040A1 *

Also Published As

Publication number Publication date
EP1948869B1 (de) 2016-04-06
WO2007053040A1 (en) 2007-05-10
DK1948869T3 (en) 2016-07-04
NO325205B1 (no) 2008-02-25
NO20055220D0 (no) 2005-11-07
EP1948869A4 (de) 2014-05-07

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