EP0268239A2 - Joint de rail isolé ainsi qu'une éclisse pour cela - Google Patents

Joint de rail isolé ainsi qu'une éclisse pour cela Download PDF

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Publication number
EP0268239A2
EP0268239A2 EP87116876A EP87116876A EP0268239A2 EP 0268239 A2 EP0268239 A2 EP 0268239A2 EP 87116876 A EP87116876 A EP 87116876A EP 87116876 A EP87116876 A EP 87116876A EP 0268239 A2 EP0268239 A2 EP 0268239A2
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EP
European Patent Office
Prior art keywords
tab
rail
joint
insulating
tabs
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Withdrawn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
EP87116876A
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German (de)
English (en)
Inventor
René Wettstein
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 EP0268239A2 publication Critical patent/EP0268239A2/fr
Withdrawn legal-status Critical Current

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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
    • E01B11/00—Rail joints
    • E01B11/54—Electrically-insulating rail joints

Definitions

  • the invention relates to an insulating joint of railroad tracks, in which on each side of the rails in lug compartments a lug is inserted, which consists of an outer lug body which bridges the abutment with respect to the rails and bridges and which is separated in the joint area, on the walls of the lug compartments At least partially adjacent tab elements made of steel, which are connected to the tab body by means of a tensile and pressure-resistant adhesive layer, and in which the opposite tabs and the rail ends are clamped by screw connections, the threaded bolts penetrate through holes in the tabs and rail ends. Furthermore, the invention relates to appropriately designed insulating tabs for forming such insulating joints.
  • Such a rail joint is the subject of DE-PS 20 09 175.
  • the insulating tabs used here consist of a steel bracket plate bridging the rail joint as well as two sheet steel covers that are at least partially adjacent to the walls of the bracket chambers. These steel sheet covers are connected to the bracket body by means of a tensile insulating layer.
  • this rigid insulating layer consists of a heat-hardened metal adhesive containing a tensile fabric or fleece.
  • Sleeve-like insulating bodies are glued or hammered into the through bores of these sandwich-like tabs.
  • the through holes in the rail ends are also lined with sleeve-like insulating bodies.
  • the steel sheet covers serve to protect the insulating layer against wear due to pressure and / or frictional forces that occur between these steel sheet covers and the walls of the tab chambers of the rails.
  • DE-OS 33 35 311 relates to an insulating joint, in which the tabs with their insulating layer bear directly against the walls of the tab chambers of the rails.
  • the essence of this insulating joint is that expansion bushings with conical inner surfaces are inserted into the through holes of the brackets and possibly also the rail ends, by their interaction with the associated high-strength threaded bolts a non-breathing, gapless connection between the rail ends is maintained even when high tensile forces occur should.
  • resilient clamping means between the nuts of the threaded bolts and the expansion sleeves are switched on in order to achieve a pre-tensioning of the clamping means.
  • the object of the invention is therefore to develop an insulating joint of the type described above so that, with a simple construction, it ensures a rigid and wear-resistant connection of the rail ends even under high loads over long operating times.
  • the tab elements are designed as the supporting elements which take up the essential forces occurring at the rail joint, that the threaded bolts of the screw connections essentially transmit the occurring forces to the supporting elements and that the threaded bolts are only insulated from the tab body.
  • the essence of the arrangement according to the invention consists in the fact that the tab elements lying inside with respect to the rail, that is to say at least partially on the walls of the tab chambers of the rails, are designed as support elements, which thus rest on the rail joint can absorb occurring forces.
  • the forces originating from the rail are transmitted to these support elements designed in this way.
  • a pairing of steel / steel results between the rail and the respective threaded bolt and these threaded bolt and the supporting elements.
  • These pairings can naturally absorb high pressure and shear forces without being subject to rapid wear, as is the case with the insulating sleeves according to the state of the art. Due to the power transmission task, which is assigned to the tab elements of the tabs in the insulating joint according to the invention, these tab elements are also not comparable with the steel sheet covers according to the aforementioned DE-PS 20 09 175.
  • the forces are transmitted to the bracket body of the bracket via a large insulating layer.
  • this insulating layer takes up a large area and the forces are transmitted in a defined manner over the entire area, the tensile, compressive and shear forces occurring in the insulating layer are relatively low. They can be absorbed by suitable, at the same time insulating glue that is already on the market. After the brackets are completely manufactured in the factory, the adhesive connection between the bracket body and the support elements can be produced under the necessary exact conditions.
  • the threaded bolts must then be arranged isolated from the tab body, suitably by switching a sleeve through insulating material between the respective nut of the screw connection and the tab body.
  • these sleeves made of insulating material have only relatively low compressive forces, namely essentially that Tightening forces of the screw connection, which can be guaranteed by the conventional insulating materials without serious wear and tear even over longer operating times.
  • This stiffness of the insulating joint according to the invention also contributes to the fact that the force-absorbing and correspondingly shaped support elements lie in a kind of form fit in the link chambers of the rails and the forces occurring in this form fit can be easily absorbed by the support elements without undue deformation.
  • the rail joint according to the invention requires a relatively low manufacturing accuracy, in particular with respect to the support elements, because the contour of the respective support element facing the rail need not be exactly matched to the corresponding wall parts of the link chamber, since any occurring Force peaks can, of course, be rigidly absorbed by the supporting elements. Of course, this also results in an unproblematic fitting of the tabs, which is also a not inconsiderable advantage in rough construction site operation.
  • the solution according to the invention is also characterized by a considerably smaller number of parts, which may also be commercially available.
  • the insulating joint according to the invention allows simple assembly.
  • a tab can serve as a drilling jig for the through holes in the rail webs and in the opposite tab. This ensures that the through holes in the two opposite tabs and in the associated rail ends are exactly aligned with each other with respect to the rail height offset to each other, so that the threaded bolts can be inserted without any problem.
  • the aim should be that a pair of tabs has the same moment of inertia as the rail.
  • the entire tab in cross section perpendicular to a rail has a load cross section which is constructed as symmetrically as possible with respect to its cross section, in particular has a vertical dimension which approximately corresponds to that of the rail.
  • the tab body can have at least over part of its length a U-shaped cross section perpendicular to the rail and open towards the rail, the free leg of which engages under the rail foot.
  • the invention relates to the insulating tabs designed as described for producing the claimed insulating joint.
  • the object is also achieved in that only one tab element is provided such that it is glued in an insulating manner, so that the tab with one rail via insulating adhesive and tab element and with the other rail directly, ie. H. is conductively connected.
  • the respective opposing tabs are essentially the same, but are arranged upside down with respect to the rail sides, so that each insulated tab half / with tab element faces an uninsulated tab half / without tab element. In this way, the same tabs can be used on both sides of the rails in this, in itself, asymmetrical configuration of the tab.
  • the flap body has a thickening bulge on the uninsulated half of the flap, which has an essentially identical outer profile as the flap half with glued-on flap element.
  • the two tab halves have a substantially identical outer contour, so that the support requirements in the wall of the tab chamber of the rails are practically identical.
  • This solution according to the invention achieves a more balanced load on the adhesive joints as a result of the reduction of voltage peaks under vertical load.
  • the tab with its tab body rests directly on the rail on one side, the rail and tab have the same bending line.
  • the rail with the insulating joint according to the invention is thus equivalent to a normal rail except for the gap a few millimeters wide.
  • two abutting railroad tracks are generally designated 10.
  • the head of the respective rail bears the reference number 11, the foot of the rail number 12 and the lug chamber formed on each side of the rail between head 11 and foot 12 number 13.
  • the rails 10 rest in the usual way on sleepers 14 and are on them by means Rail fastenings 15 attached.
  • the joint 16 between two adjacent rails 10 is bridged on both sides of the rails 10 in an electrically insulating manner by a tab, which is designated 20 overall.
  • the respective tab 20 comprises a tab body 21 made of steel which extends through the joint 16. This tab body 21 is in the installed position of the tab with respect to the rails 10 outside.
  • each tab 20 comprises two tab elements 22 which are spaced apart from one another in the region of the joint 16 between the two adjacent rails 10, ie are separated.
  • These tab elements 22 are designed as support elements and therefore have a correspondingly massive cross section perpendicular to the rails 10. This cross section also forms the shape of a flat U, so that the tab elements 22 with their surface facing the rail are essentially congruent with the wall of the tab chambers 13 in the rails 10. In this way, the tab bodies 21 bear with the free legs of the U in a form-fitting manner against the corresponding wall parts of the tab chambers 14 of the rails 11.
  • the two tab elements or support elements 22 are connected to the associated tab body 21 by means of a tensile and pressure-resistant insulating layer 23. This insulating layer can consist of a suitable adhesive.
  • Screw connections are provided for bracing the two brackets 20 lying opposite one another in the joint region 16 of the two rails 10.
  • Each screw connection 30 comprises a threaded bolt 31 which passes through corresponding through bores 24 in the respective tab 20 and a correspondingly aligned through bore 17 in the rail 10.
  • the respective threaded bolt 31 lies with its outer surface with a defined fit both on the outer surface of the through hole 17 in the rail 10 and in the through hole 24 in the tab element 22.
  • a bushing 25 is inserted into the through hole 17 in the tab element 22, which is seated with a defined fit in the correspondingly enlarged through hole 24 in the tab element and in which, on the other hand, the threaded bolt 31 is also fitted with a defined fit is.
  • the forces occurring in the rail joint 16 are essentially transmitted from the rail 10 via the threaded bolt 31 to the tab elements 22 designed as support elements, namely by steel / steel pairings. Forces from the tab elements 22 are applied to the La via the large-area insulating layer 23 leg body 21 derived.
  • a sleeve 33 made of insulating material is connected between the threaded bolt 31 and the respective nut 32 acting on the tab body 21.
  • This sleeve 33 expediently consists of a collar and a sleeve part. Between the collar of the sleeve 33 and the nut 32, a washer 34 made of steel can be arranged to protect the sleeve 33 made of insulating material.
  • a pair of brackets 20 expediently has essentially the same moment of inertia as the respective rail 10. It is important that the cross section of the respective bracket 20 has a dimension comparable to the rail height, in particular in the vertical direction.
  • the tab body 21 has at its lower edge a section 26 which extends the tab body downward. This is essentially U-shaped in cross section perpendicular to the rail 10. This U-shape opens to the foot 12 of the rail in such a way that the free leg 27 of the U-shaped section 26 of the bracket body 21 engages under the foot of the rail.
  • the tab body 21 can have a substantially horizontally extending flange 28, which also provides for a corresponding increase in cross section.
  • the tabs 20 are constructed asymmetrically in themselves and, at the same time, are arranged reversed with respect to each other with respect to the rails 10 (offset by 180 degrees in the horizontal plane).
  • tab element 22 There is always only one tab element 22 with an insulating layer 23 glued to one tab body half per tab body 21. This is designed to be electrically insulated first tab half arranged or formed substantially identically to the embodiment shown in FIG. 2.
  • the other flap half consists only of the flap body 21, which has undergone a thickening bulge 36 here.
  • This bulge 36 which has essentially the same outer contour as the tab half with glued tab element 22, the tab is supported in the same way, but directly and uninsulated via the tab body in the wall of the tab chamber 13.
  • the bushings 25 are each fitted on the one hand in the through holes 24 of the tab elements 22 of the insulated tab half of a tab 20 and on the other hand in a through hole 35 of the uninsulated tab body half of the second, opposite tab 20.
  • support is provided by a bushing 25 on one rail side via the link element and on the other rail side directly via the link body, as a result of which great rigidity of the connection is obtained.
  • the nuts 32 of the screw connections 30 are supported directly and uninsulated on the tab body 21 via a washer 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Insulating Bodies (AREA)
  • Connection Of Plates (AREA)
EP87116876A 1986-11-18 1987-11-16 Joint de rail isolé ainsi qu'une éclisse pour cela Withdrawn EP0268239A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3639364 1986-11-18
DE19863639364 DE3639364A1 (de) 1986-11-18 1986-11-18 Isolierstoss von eisenbahnschienen sowie lasche hierfuer

Publications (1)

Publication Number Publication Date
EP0268239A2 true EP0268239A2 (fr) 1988-05-25

Family

ID=6314198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116876A Withdrawn EP0268239A2 (fr) 1986-11-18 1987-11-16 Joint de rail isolé ainsi qu'une éclisse pour cela

Country Status (2)

Country Link
EP (1) EP0268239A2 (fr)
DE (1) DE3639364A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027367A1 (fr) * 1996-01-26 1997-07-31 Wood Timothy A Joint pour rails
WO2005122674A3 (fr) * 2004-06-17 2007-09-20 Jude Igwemezie Dispositif pour la jonction de rails
US7735746B2 (en) * 2008-10-22 2010-06-15 Jude Odihachukwunma Igwenezie Device for insolated joint for joining rails

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113147517B (zh) * 2021-05-10 2024-11-26 中铁高铁电气装备股份有限公司 一种侧接触轨可调绝缘支撑装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027367A1 (fr) * 1996-01-26 1997-07-31 Wood Timothy A Joint pour rails
WO2005122674A3 (fr) * 2004-06-17 2007-09-20 Jude Igwemezie Dispositif pour la jonction de rails
JP2008502823A (ja) * 2004-06-17 2008-01-31 ジュード・イグウェメジー レールを結合するための装置
US7735745B2 (en) * 2004-06-17 2010-06-15 Jude Odihachukwunma Igwenezie Device for joining rails
US7735746B2 (en) * 2008-10-22 2010-06-15 Jude Odihachukwunma Igwenezie Device for insolated joint for joining rails

Also Published As

Publication number Publication date
DE3639364A1 (de) 1988-05-19

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