EP3430203B1 - Support pour rail ferroviaire - Google Patents

Support pour rail ferroviaire Download PDF

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Publication number
EP3430203B1
EP3430203B1 EP17715224.6A EP17715224A EP3430203B1 EP 3430203 B1 EP3430203 B1 EP 3430203B1 EP 17715224 A EP17715224 A EP 17715224A EP 3430203 B1 EP3430203 B1 EP 3430203B1
Authority
EP
European Patent Office
Prior art keywords
support
rail
aperture
opening
upper 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.)
Active
Application number
EP17715224.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3430203A1 (fr
Inventor
Joël Cailliau
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.)
Pandrol SAS
Original Assignee
Pandrol SAS
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 Pandrol SAS filed Critical Pandrol SAS
Publication of EP3430203A1 publication Critical patent/EP3430203A1/fr
Application granted granted Critical
Publication of EP3430203B1 publication Critical patent/EP3430203B1/fr
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
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E01B9/303—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped bar
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs

Definitions

  • the present disclosure relates to a rail support, of the type with elastic attachment wherein said fastener bears on a pad of said rail and is tensioned by screwing an anchoring element such as a lag bolt or a stud.
  • the present disclosure relates more particularly to an improvement to easily adjust the transverse position of the rail on the railway.
  • Such a support can be used to fix rail rails of various natures, on a slab or rail sleepers, in first pose or renovation.
  • the anchoring element may consist of either a sheath-lag assembly or a stud-nut assembly.
  • the rail is fixed, at a given point, by two fasteners, placed on either side of the rail.
  • the opening of the support in which the anchoring element is engaged has an oblong section, which allows the support to move laterally with respect to the anchoring element as soon as the it's loose. when translation of the rail is desired, it is then possible to slightly loosen the anchoring element (without disassembling it completely), to laterally push the support to the new position of the rail, then to tighten the anchoring element.
  • these supports can be problematic during certain maintenance operations of the tracks, especially when it is necessary to replace a worn or damaged rail. Indeed, in such a case, it is necessary to loosen the anchoring element to detach the elastic clip and thus release the rail support: and, in doing so, the support is free to move laterally of so that the transverse setting of the rail is lost and must be found and checked carefully when fixing the replacement rail.
  • These supports thus lengthen the duration of the maintenance procedures, make them more complex, and can therefore lead to possible positioning errors.
  • the present disclosure relates to a support for rail rail comprising a lateral wedging surface, a first upper bearing surface, a second upper bearing surface, distinct from the first upper bearing surface, a first opening, of oblong section, opening at the first upper bearing surface and traversing vertically support, a second opening, opening at the second upper bearing surface, and a receiving portion configured to receive a rail fastener, provided at least laterally to outside compared to the second opening.
  • the first opening extending as far as the lower surface of the seat of the support, thus makes it possible to receive an anchoring element and thus to anchor the support on the track: its oblong section then makes it possible to easily adjust the transverse position of the support on the track and thus to wedge the rail transversely on the track, the position of the support being blocked by compression of the anchoring element against its first surface upper support.
  • the second opening for its part to receive a fastening element for clamping a rail fastener on the support and thus to fix the rail relative to the support.
  • the first and second openings, and more generally all the openings intended for anchoring the rail support open onto free surfaces of the rail support, that is to say surfaces that are not intended to be covered by the rail in question: the anchoring openings are thus accessible even in the presence of the rail, it is possible to remove the anchoring elements anchoring the support and thus move the rail without disassembly the latter of the support.
  • the second opening vertically traverses the support, that is to say up to the lower seating surface.
  • the fixing element may take the form of an anchoring element of the same nature or of a different nature from the anchoring element passing through the first opening.
  • the second opening is of oblong section. If necessary, this makes it possible to move the support transversely relative to the fastening element cooperating with the second opening.
  • the second aperture is not through. It does not open at the level of the lower seating surface.
  • the fastening element is independent of the crossmember or the slab on which the support is mounted: during a rail displacement operation, it is then possible to keep the fastener clamped in such a way that so that the support and the rail form a unitary assembly, thus facilitating the movement of the assembly.
  • the second aperture is threaded. More generally, each opening can be threaded.
  • the support is made of a rigid material having a Young's modulus greater than 5 GPa, preferably greater than 10 GPa. This reduces the risk of creep of the support under the clamping stress of the anchoring element and / or the fastening element: the clamping stress exerted by the anchoring element and / or the fastening element on the first and / or second upper bearing surface does not decrease, or very little, over time, so that the risk that the support slides transversely is greatly reduced or completely eliminated.
  • the support comprises a base and a block, the block being mounted in a cavity of the base; and the first opening and / or the second opening is made in said block. It is thus possible to make the base in an inexpensive material, even if it is not rigid, and the block in a more rigid material to reduce the risk of creep mentioned above.
  • the block, or more broadly said rigid material is metallic, preferably steel or cast iron. he can also be made of plastic loaded with glass fibers or other types of reinforcements.
  • the base is made of plastic.
  • the support comprises a first block, the first block being mounted in a first cavity of the base, and the first opening is made in said first block.
  • the support comprises a second block, the second block being mounted in a second cavity of the base, and the second opening is formed in said second block.
  • the first and / or second block passes vertically through the support, that is to say up to the lower seating surface. This ensures a transmission of compression forces up to the cross or the slab on which the support is mounted.
  • the receiving portion extends at least on either side of the second opening in the longitudinal direction.
  • the clip thus surrounds the second opening.
  • the support further comprises a second lateral wedging surface, provided in relation to the first lateral wedging surface. It is thus possible to accurately wedge the rail between the two lateral wedging surfaces.
  • the support further comprises a third upper bearing surface, distinct from the first and second upper bearing surfaces, a third opening, opening at the third upper bearing surface.
  • This third opening makes it possible to receive a second fixing element so as to fix the second side of the runner of the rail by means of a second rail fastener.
  • This third opening has the same construction options as the second opening.
  • the carrier includes a second receiving portion configured to receive a second rail attachment, provided laterally outwardly with respect to the third aperture.
  • the support further comprises a third block, the third block being mounted in a third cavity of the base, the third opening is formed in said third block.
  • the support further includes an upper support surface, provided between the two wedging side surfaces, configured to receive a rail rail.
  • the support thus has a general shape of U in the middle of which is received the rail.
  • the present disclosure also relates to a railway rail fastening system, comprising a carrier according to any one of the preceding embodiments.
  • the fastening system further comprises a rail fastener, preferably resilient, configured to seat in the support receiving portion and to abut a runner of a railway rail.
  • the system may comprise a second rail attachment.
  • the fastening system further comprises an anchor member and a fastener member each having a bearing shoulder; the anchoring element is configured to penetrate into the first opening until its bearing shoulder bears against the first upper support surface of the support; and the fastener is configured to enter the second opening, preferably until its bearing shoulder bears against the second upper support surface of the support.
  • the anchor member and the fastener member are anchor screws.
  • the fastening system further comprises a threaded female insert, configured to be anchored in a railway tie or slab and to cooperate with an anchor member.
  • the support of the fastening system is of the type comprising two lateral wedging surfaces configured to frame the rail.
  • the fastening system comprises two supports, preferably symmetrical, configured to be positioned on either side of the rail.
  • the fastening system further comprises a soleplate configured to be positioned between a railroad tie or slab of a railway track and the bottom surface of the support seat.
  • the fastening system further includes a shoe configured to be positioned on the upper support surface and under the rail shoe.
  • the FIG 1 to 3 represent a fastening system 1 for fixing a rail 2 on a slab 3 of a railway.
  • the fastening system 1 comprises a support 10, three anchoring screws 40, 41, three anchoring anchors 42 threaded and anchored in the slab 3, two elastic fasteners 50 and a sole 60.
  • the support 10 is formed mainly of a base 11 of plastic taking in cross section a general shape of U: it thus has a bottom surface of seat 12, flat and parallel to the slab 3, two side flanks 13, and a surface upper support 14, flat and parallel to the lower seat surface 12, provided in the recess of the U between the two lateral flanks 13.
  • Each lateral flank 13 has a lateral wedging surface 15 directed towards the inside of the support 10: these two lateral wedging surfaces 15 extend vertically vis-à-vis one another and thus frame the upper support surface 14; the distance which separates them corresponds substantially, with a clearance close to the width of the shoe 2a of the rail 2.
  • flanks 13 of the support 10 comprises a cavity 30 of rectangular cross section through the support 10 from top to bottom; this cavity 30 receives a parallelepipedal block 31 of steel whose lower surface, forming a lower bearing surface 32 ', is flush with the lower seat surface 12 of the support 10 and whose upper surface, forming a first upper bearing surface 32, extends horizontally at the level of the upper surface of the flank 13.
  • a through opening 33 is made from top to bottom in the block 31: this opening 33 is cylindrical, vertical generatrix and oblong directional curve.
  • the main axis of this oblong guide curve extends here in the transverse direction of the support 10; it could however be oblique with respect to this transverse direction.
  • Each side flank 13 also includes a receiving portion 20 for rail attachment.
  • Each receiving portion 20 thus forms a platform extending laterally outwardly from the lateral wedging surface 15 of the side 13 considered; it comprises at its outer end a semicircular groove 21 delimited between a semicircular stud 22 and walls 23.
  • a parallelepiped cavity 24 passing through the support 10 from top to bottom is formed in each of the receiving portions 20; these cavities 24 each receive a parallelepipedal block 25 of metal material, steel in the present example, whose lower surface, forming a lower bearing surface 26 ', is flush with the lower surface 12 of the support and whose upper surface, forming respectively a second and a third upper bearing surface 26, extends horizontally above the level of the semicircular groove 21.
  • a through opening 27 is made from top to bottom in each of these blocks 25: this opening 27 is cylindrical, vertical generatrix and oblong directional curve.
  • the main axis of this oblong guide curve extends here in the transverse direction of the support; it could however be oblique with respect to this transverse direction.
  • the first operation is to position the support 10 on the slab 3.
  • a sole 60 possibly comprising several layers 60a, 60b, is disposed between the upper surface of the slab 3 and the lower seating surface 12 of the support 10.
  • the layer 60b in contact with the lower seating surface 12, rigid in the sense of the present disclosure, is preferably made of metal.
  • a first anchoring screw 40 forming an anchoring element, is then engaged in the opening 33 of the block 31 and then partially screwed into the corresponding anchoring insert 42. Thanks to the oblong shape of the opening 33, the support 10 can then be maneuvered so as to precisely adjust its transverse position relative to the slab 3. On this occasion, in order to facilitate the orientation of the support 10, it is possible to to engage already second and third anchoring screw 41, forming fastening elements, in the openings 27 of the blocks 25 and then partially screw in the corresponding anchor inserts 42, the oblong shape of the openings 27 allowing a transverse displacement of the support 10.
  • the first anchor screw 40 is screwed firmly into the insert 42 until its bearing shoulder 40a contacts and exerts a stress against the first upper bearing surface 32 In this way, the position of the support 10 is blocked and the rail 2 can be mounted on the support 10 without the risk of moving it.
  • a sole 35 possibly comprising several layers 35a, 35b, is then placed on the upper support surface 14 of the support 10.
  • the rail 3 is then placed on this sole 35 between the two surfaces. lateral 14, so that the accuracy of its transverse position is automatically ensured.
  • the rail 3 is then fixed on the support 10 by means of two elastic fasteners 50, made of steel wire, taking substantially the shape of an omega with a central portion 51, forming a semicircular loop, extended by two rectilinear and parallel branches 52, and each terminated by support lugs 53 extending substantially perpendicular to the rectilinear branches.
  • Each fastener 50 is thus inserted under the bearing shoulder 41a of the anchor screw 41 considered so that the central portion 51 is received in the semicircular groove 21 of the receiving portion 20 of the support 10, which the rectilinear branches 52 extend on either side of the opening 27 and the anchoring screw 41 and under the bearing shoulder 41a of the anchoring screw 41, and that the bearing lugs 53 bear against the shoe 2a of the rail 3.
  • the anchoring screws 41 can be screwed completely and firmly until their bearing shoulder 41a is in contact and exert a stress against the second and third upper surface. In this way, the rail 3 is firmly fixed on the support 10 on the one hand and on the slab 3 on the other hand.
  • a static coefficient of friction as high as possible, at least greater than 0.25, between the upper bearing surfaces 26, 32 and the shoulders bearing 40a, 41a anchoring screws on the one hand and between the lower bearing surfaces 26 ', 32' and the sole 60b secondly.
  • these contact surfaces can benefit from a surface treatment, such as a formation of roughness, to increase this coefficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Connection Of Plates (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP17715224.6A 2016-03-17 2017-03-13 Support pour rail ferroviaire Active EP3430203B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652272A FR3048984B1 (fr) 2016-03-17 2016-03-17 Support pour rail ferroviaire
PCT/FR2017/050564 WO2017158271A1 (fr) 2016-03-17 2017-03-13 Support pour rail ferroviaire

Publications (2)

Publication Number Publication Date
EP3430203A1 EP3430203A1 (fr) 2019-01-23
EP3430203B1 true EP3430203B1 (fr) 2019-10-30

Family

ID=56511661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17715224.6A Active EP3430203B1 (fr) 2016-03-17 2017-03-13 Support pour rail ferroviaire

Country Status (5)

Country Link
EP (1) EP3430203B1 (pt)
BR (1) BR112018068718B1 (pt)
ES (1) ES2769178T3 (pt)
FR (1) FR3048984B1 (pt)
WO (1) WO2017158271A1 (pt)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685364A1 (fr) * 1991-12-18 1993-06-25 Vagneux Traverses Beton Arme S Selle et traverse de voie ferree; appareils de voie ferree les comportant.
DE102009041112B4 (de) * 2009-09-15 2014-10-30 Vossloh-Werke Gmbh System zum Befestigen einer Schiene und Befestigung einer Schiene

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3430203A1 (fr) 2019-01-23
FR3048984B1 (fr) 2018-03-23
FR3048984A1 (fr) 2017-09-22
ES2769178T3 (es) 2020-06-24
WO2017158271A1 (fr) 2017-09-21
BR112018068718B1 (pt) 2023-02-14
BR112018068718A2 (pt) 2019-01-22

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