EP0829577A1 - Gerade oder gekrümmte Schiene mit variabler Rillenbreite - Google Patents

Gerade oder gekrümmte Schiene mit variabler Rillenbreite Download PDF

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Publication number
EP0829577A1
EP0829577A1 EP97401669A EP97401669A EP0829577A1 EP 0829577 A1 EP0829577 A1 EP 0829577A1 EP 97401669 A EP97401669 A EP 97401669A EP 97401669 A EP97401669 A EP 97401669A EP 0829577 A1 EP0829577 A1 EP 0829577A1
Authority
EP
European Patent Office
Prior art keywords
rail
groove
width
face
straight
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Withdrawn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
EP97401669A
Other languages
English (en)
French (fr)
Inventor
Christopher Muller
Frédéric Hege
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.)
COGIFER Compagnie Generale dInstallations Ferroviaires SA
Original Assignee
COGIFER Compagnie Generale dInstallations Ferroviaires SA
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 COGIFER Compagnie Generale dInstallations Ferroviaires SA filed Critical COGIFER Compagnie Generale dInstallations Ferroviaires SA
Publication of EP0829577A1 publication Critical patent/EP0829577A1/de
Withdrawn legal-status Critical Current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
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E01B5/04—Grooved rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E01B5/14—Rails for special parts of the track, e.g. for curves

Definitions

  • the present invention relates to a grooved rail of the type with an open groove at the top of the rail and delimited laterally by two faces, at least one of the faces of the groove being machined from so that the width of the groove varies over at least one main section of the length of the rail between a first width and a second width, the section main being extended by two sections adjacent to constant groove width respectively equal to said first width and said second width.
  • the invention relates to straight or curved rails.
  • Grooved rails are used in particular in tram traffic lanes, in which the flanges of the wheels of the circulating vehicles are guided in the gorges.
  • the width of the grooves can vary depending on the track areas. In particular, it is known to widen the grooves in the curves.
  • variable width grooved rails are formed for example by machining one of the delimiting faces laterally the throat. Machining takes place on a straight rail. Most of the machined face of the groove throat depth an intersection profile with a plane parallel to the rolling plane of the rail which is straight and forms a straight line. The machined side is then flat and defines with the other side non-machined throat at a constant angle.
  • the invention aims to provide a rail to groove to ensure the connection of a section grooved rail from a first width to a section of grooved rail of a second width not having the disadvantages mentioned above and which allow in particular guiding the vehicle wheels not giving not birth to transverse accelerations brutal.
  • the invention relates to a rail straight throat of the aforementioned type, characterized in that the faces delimiting the groove on said main section are tangentially connect to the corresponding faces of grooves of the adjacent rail sections, and in that, on most of the throat depth, the profile of the intersection of said machined face with a parallel plane the running surface of the rail admits at any point the length of said main section a single tangent, the directing coefficient of the tangent being continuously variable according to the length of said main section.
  • the invention further relates to a curved rail grooved, characterized in that it is likely to be obtained by deformation of a straight grooved rail such that previously defined.
  • the invention also relates to a method of manufacturing a curved grooved rail as defined above, one of the sides laterally delimiting the groove having a determined profile, of the type comprising a step machining of a face of a groove of a straight rail and a subsequent deformation step along a given curve of said straight rail to obtain said curved rail, characterized in that, before said deformation step, we machines the face of said straight rail according to a defined profile by the mathematical transform, corresponding to the deformation opposite to said deformation following a given curve, of the determined profile defining the face of the groove of the curved rail.
  • the straight grooved rail according to the invention shown in Figure 1, has a pad 10 and a core vertical 12 supporting a mushroom 14 and a flap 16 between which a groove 18 is delimited.
  • the flap 16 After installation of the rail, the flap 16 is arranged inside the track.
  • the sausage of the wheel is received in groove 18 while the surface of wheel bearing rests on an upper surface 20 of the fungus.
  • the plane tangent to the upper surfaces of the two rails of a track is called the rolling plane.
  • the groove 18 is delimited laterally by a face 22, called guide, bordering the mushroom 14 and a face 24, said inner, bordering the flap 16.
  • the faces 22 and 24 are slightly inclined and converging towards a bottom 26 of the throat.
  • the faces 22, 24 are each generated by a line segment contained in the plane of Figure 1. These segments have an inclination substantially constant with respect to the vertical core 12 along the entire length of the rail. Each line segment is tangentially connected to the bottom 26 of the groove and to upper surfaces of the mushroom and the bib by portions of a circle.
  • a plan called a master plan is located at a normalized distance e below the working plane.
  • the master plan is parallel to the working plan.
  • the width of the groove, or opening is the distance separating the points of intersection of the segments face generators with the master plane.
  • the internal face 24 has been machined so that the groove 18 has a variable width from a first width denoted l 1 to a second upper width denoted l 2 .
  • the rail profile used for manufacturing is of the thick flap type, that is to say that the profile already has a groove before machining the inner face 24. It is also possible to use a special profile with full groove. In this case, the entire groove will be machined, and in particular the two faces 22, 24.
  • the guide face 22 is straight and does not have been machined. So it stretches at a constant distance of the external lateral face 28 of the fungus over all the length of the rail.
  • the machining of the face 24 is such that it is tangentially connects to the corresponding face of sections 52 and 54 along the lines noted 56 and 58.
  • the profile of the intersection of the machined face 24 with all plane parallel to the running surface of the rail, in particular the master plan admits at any point the length of the section 50 a single tangent.
  • the guiding coefficient of this tangent is continuously variable depending on the length of main section 50.
  • Figure 3 is shown the main section connection after deformation with a view to putting it used in a so-called parabolic connection zone.
  • This figure bears the reference 50 '.
  • the elements of the corresponding section 50 ′ to those of section 50 and which have been deformed carry the same reference as in FIGS. 1 and 2 followed by a premium.
  • parabolic connection zone designates a connection established between on the one hand a rail 60 of an aligned track, that is to say a straight grooved rail with a first width l 1 , and on the other hand a rail 62 of a curved track, that is to say having a constant curvature of radius R 1 and an enlarged groove of width l 2 , and in which the guide face 22 'as well as the outer face 28' of the mushroom of the connection section follow profiles characteristic of a parabolic connection.
  • a parabolic connection is defined mathematically by a cubic.
  • Each profile of the intersection of the interior face machined 24 'with the master plan includes three successive sections from straight rail 60 to rail curve 62.
  • a first part denoted 24A is defined by a line segment extending the inside of the rail groove 60.
  • the next part 24B follows a parabolic profile. To ensure progressive spacing of the faces 22 'and 24', the characteristic parameters of the cubic defining part 24B are different from those defining the non-machined guide face 22 '.
  • the last part, denoted 24C, is defined by an arc of a circle whose radius is equal to that R 1 + l 2 of the inner face of the curved rail 62 and of the same center.
  • the rail shown in Figure 3 is obtained by deformation of the rail of Figure 2 by bending between rollers or by elastic deformation during its setting square.
  • the guide face 22 is straight and not machined. It extends the corresponding faces of the sections complementary 52 and 54.
  • the internal face 24 presents after machining on most of the throat depth a profile in section by any plane parallel to the running plane of the rail, in particular the master plan which includes three successive sections from section 52 to section 54, corresponding respectively to parts 24A to 24C of Figure 3.
  • the first part, noted 24a is defined by a cubic whose parameters are those of the face of guide 22 'but of reverse curvature. So after bending, the part 24a of the inner face is straightened to form the substantially straight portion 24A.
  • the next part, denoted 24b is defined by parameters resulting from the difference between the characteristic parameters of the guide face 22 'and those of part 24B.
  • part 24b is such as after deformation according to the parabolic profile corresponding to the guide face 22 ', this follows a parabolic profile of different parameters.
  • the last part of the machined face, noted 24c, is defined in the same way from the mathematical transform corresponding to reverse deformation on bending according to the parameters of the face 22 'of the circular profile defining part 24C.
  • each section profile has three points where the radius of curvature is infinite. Two of these points are located at the ends of the machining. They correspond at points of tangential connecting lines 56, 58.
  • the third point, noted 70 in Figure 2 is located substantially in the middle of the machined profile of the face 24 and separates it into two successive curve portions having opposite directions of curvature.
  • point 70 is a center of symmetry for the curve 24b.
  • connection of the curved track 62 to the straight track 60 has been carried out following a parabolic connection.
  • this connection can be performed on a clothoid.
  • a parabolic connection is defined by a cubic
  • a clothoid is a progressive connection curve between a straight alignment and a circular section characterized by the fact that at any point considered, the radius of curvature is inversely proportional to the arc length from the origin.
  • each profile in section of the non-machined face 22 ' is then defined by a clothoid and the part 24B of the machined face is defined also by a clothoid of parameters different from those defining the non-machined face.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Escalators And Moving Walkways (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
EP97401669A 1996-09-13 1997-07-10 Gerade oder gekrümmte Schiene mit variabler Rillenbreite Withdrawn EP0829577A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611212A FR2753462B1 (fr) 1996-09-13 1996-09-13 Rails droit ou courbe a gorge de largeur variable
FR9611212 1996-09-13

Publications (1)

Publication Number Publication Date
EP0829577A1 true EP0829577A1 (de) 1998-03-18

Family

ID=9495729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401669A Withdrawn EP0829577A1 (de) 1996-09-13 1997-07-10 Gerade oder gekrümmte Schiene mit variabler Rillenbreite

Country Status (3)

Country Link
EP (1) EP0829577A1 (de)
FR (1) FR2753462B1 (de)
NO (1) NO974189L (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107476143A (zh) * 2017-08-28 2017-12-15 芜湖中铁科吉富轨道有限公司 一种菱形交叉轨距
CN115744110A (zh) * 2022-11-26 2023-03-07 浙江名创光电科技有限公司 一种自适应输送机构及具有该输送机构的分拣机
CN118219947A (zh) * 2024-05-27 2024-06-21 上海新纪元机器人有限公司 座舱座椅

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1343001A (en) * 1917-11-15 1920-06-08 Samuel W Simonds Street-railroad rail
DE1840448U (de) * 1961-07-08 1961-11-02 Deutschland A G Maschf Kleinbogengleis.
US3496882A (en) * 1968-11-25 1970-02-24 Jackson E Campbell Method for reducing shells in outer-curve rails
WO1995031604A1 (de) * 1994-05-16 1995-11-23 Bwg Butzbacher Weichenbau Gmbh Kurvenzug
AT401781B (de) * 1989-08-02 1996-11-25 Oesterr Bundesbahnen Gleis

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1343001A (en) * 1917-11-15 1920-06-08 Samuel W Simonds Street-railroad rail
DE1840448U (de) * 1961-07-08 1961-11-02 Deutschland A G Maschf Kleinbogengleis.
US3496882A (en) * 1968-11-25 1970-02-24 Jackson E Campbell Method for reducing shells in outer-curve rails
AT401781B (de) * 1989-08-02 1996-11-25 Oesterr Bundesbahnen Gleis
WO1995031604A1 (de) * 1994-05-16 1995-11-23 Bwg Butzbacher Weichenbau Gmbh Kurvenzug

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107476143A (zh) * 2017-08-28 2017-12-15 芜湖中铁科吉富轨道有限公司 一种菱形交叉轨距
CN115744110A (zh) * 2022-11-26 2023-03-07 浙江名创光电科技有限公司 一种自适应输送机构及具有该输送机构的分拣机
CN118219947A (zh) * 2024-05-27 2024-06-21 上海新纪元机器人有限公司 座舱座椅

Also Published As

Publication number Publication date
FR2753462B1 (fr) 1998-12-18
NO974189L (no) 1998-03-16
FR2753462A1 (fr) 1998-03-20
NO974189D0 (no) 1997-09-11

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