EP4077810A1 - Machine mobile et procédé d'usinage de la surface d'un champignon de rail - Google Patents

Machine mobile et procédé d'usinage de la surface d'un champignon de rail

Info

Publication number
EP4077810A1
EP4077810A1 EP20815752.9A EP20815752A EP4077810A1 EP 4077810 A1 EP4077810 A1 EP 4077810A1 EP 20815752 A EP20815752 A EP 20815752A EP 4077810 A1 EP4077810 A1 EP 4077810A1
Authority
EP
European Patent Office
Prior art keywords
grinding
rail
machine
tools
grinding unit
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
EP20815752.9A
Other languages
German (de)
English (en)
Other versions
EP4077810B1 (fr
EP4077810C0 (fr
Inventor
Andreas HACKNER
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.)
Plasser und Theurer Export Von Bahnbaumaschinen GmbH
Original Assignee
Plasser und Theurer Export Von Bahnbaumaschinen GmbH
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 Plasser und Theurer Export Von Bahnbaumaschinen GmbH filed Critical Plasser und Theurer Export Von Bahnbaumaschinen GmbH
Publication of EP4077810A1 publication Critical patent/EP4077810A1/fr
Application granted granted Critical
Publication of EP4077810B1 publication Critical patent/EP4077810B1/fr
Publication of EP4077810C0 publication Critical patent/EP4077810C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding

Definitions

  • the invention relates to a machine with a machine frame supported on rail bogies for processing the surface of a rail head of a rail by grinding with grinding tools moved translationally back and forth along an axis of movement, arranged on an adjustable to the running surface of the rail head via a height drive and along the Rail movable grinding unit.
  • the invention also relates to a method for operating the device.
  • a flawless rail surface is an essential prerequisite for the problem-free functioning of the wheel-rail system.
  • the wheel of a rail vehicle causes measurable wear on the rails, especially on the rail head, due to the constant passage. Examples include constant decelerating and braking in front of stop signals, at stops and train stations, as well as special rolling behavior in arcs.
  • AT 357593 describes grinding tools that are height-adjustable and in the longitudinal direction of the rail in groups one behind the other with a drive device for an additional working movement superimposed on the continuous movement of the machine and independent of this, reciprocating in the longitudinal direction of the machine.
  • the grinding wheels are formed by sliding stones or rotating cup wheels.
  • the invention is based on the object of specifying an improvement in the quality of the grinding result for a rail grinding machine of the type mentioned at the beginning and an associated increase in the grinding performance and economy compared to the prior art.
  • a method for processing the surface of a rail head of a rail carried out by means of the rail grinding machine is to be specified.
  • the invention provides that the grinding unit is coupled to the machine frame of the machine via a drawbar rod and can always be aligned tangentially to the rail in its axis of movement by means of geometrically defined ratios between a pivot distance 2 ⁇ or axis distance 2 ⁇ and a pivot point of the drawbar rod.
  • the grinding unit comprises a grinding frame with a grinding carriage on which the grinding tools are arranged.
  • the drive is designed for a translatory back and forth movement of the grinding carriages and thus the grinding tools by means of at least one oscillating hydraulic actuator.
  • the grinding unit comprises two grinding frames which are rotatably mounted relative to one another about a transverse axis normal to the axis of movement.
  • a useful further development of the invention is that the rotatable mounting of the grinding frames around the transverse axis of the movement axis is designed as a slide bearing.
  • the grinding tools consist of at least two grinding stones.
  • the number of grinding tools per grinding slide determines the size of the possible processing surface on the rail head and thus also directly the grinding performance of the machine.
  • a selection of at least two whetstones per sanding slide is a good engineering choice between sanding performance and compactness of the sanding unit with the associated adaptability to the constantly changing geometry of the rail position.
  • the grinding tools attached to the grinding slide are operated in the horizontal direction by the oscillating hydraulic cylinder by means of the control system in their operating frequency and amplitude according to the machine operator's specifications.
  • Fig. 1 side view of a machine for processing the rail surface
  • FIG. 2 Enlarged view of a machine from Fig. 1 Fig. 3 Top view when the machine is traveling in a curve.
  • Fig. 4 Reduced top views when the machine is traveling in a curve
  • FIG. 1 shows a simplified machine 1 for processing a rail head 6 belonging to a rail 5, which can be moved on a track 4 by rail bogies 3.
  • This comprises grinding units 8 which are rotatably mounted on a machine frame 2 belonging to the machine 1 via a drawbar 15 and vertical height drives 13 each.
  • the rail bogies 3 are designed as a double-axle bogie, rotatable about associated pivot points P1 and P2 (see also FIGS. 3 and 4).
  • a grinding unit 8 consists of a grinding frame 9 which can be moved on grinding frame wheels 14 and has a grinding carriage 10 which is movably attached thereon and which is equipped with grinding tools 11.
  • the drive of the grinding carriage 10 takes place via an oscillating hydraulic cylinder 12, which for one of the working speed 19 of the machine
  • the grinding carriage 10 is mounted vertically movable with the oscillating hydraulic cylinder 12 via a column guide on both sides in order to be able to adapt and readjust the position of the grinding tools 11, which are subject to natural wear, in relation to the grinding frame 9.
  • All hydraulic actuators are fed by an internal supply device 17.
  • a control system 18 implements the operating parameters defined by the machine operator by appropriately controlling all of the oscillating hydraulic cylinders 12 and height drives 13.
  • FIG. 2 The embodiment explained above with regard to FIG. 1 is shown enlarged in FIG. 2 with the aid of a section of the core components of the rail chassis 3, grinding unit 8 and drawbar 15.
  • Fig. 3 is a plan view of the machine 1 is shown when traveling around a curve. Like the rail bogies 3, the grinding units 8 are always oriented tangentially to the respective contact point on the rail 5.
  • the drawbar rods 15 with the associated articulation points are shown clearly highlighted.
  • the two versions in FIG. 4 show a reduced top view of the machine 1 when it is traveling around a curve.
  • the position of the axes of movement 7, which are parallel to the drawbar rod 15, is also made clear here.
  • the curve radius is given as R for this construction of the entire vehicle.
  • the variables listed here for the dimensions already apply to the verification which is carried out in the explanations relating to FIG. 5.
  • FIG. 5 is used for the analytical verification of the tangential alignment and independence from the radius R of the arc.
  • the proof is provided by calculating u, the length of the drawbar, i.e. the distance between the pivot point P3 and the point P6 of the grinding unit 8.
  • the relationship between the geometric parameters is shown by describing three right-angled triangles T1, T2 and T3.
  • Equations (3) and (4) now result after the elimination of R 3 [42]
  • the distance u which represents the length of the drawbar, depends only on the parameters a and l.
  • the arc radius R falls out of the equation, a tangential alignment of the grinding unit is given for all radii. In general, a limit value for the radius R is only given by the frame and chassis construction of the rail vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

L'invention concerne une machine (1) comprenant un bâti de machine (2) supportés sur des bogies (3), pour usiner la surface d'un champignon de rail (6) d'un rail (5) par rectification à l'aide d'outils de rectification (11) déplacé d'avant en arrière le long d'un axe de déplacement (7), lesdits outils de rectification étant disposés sur une unité de rectification (8), qui peut être placée sur la surface de roulement du champignon de rail (6) au moyen d'un entraînement vertical (13) et qui peut être déplacé le long du rail (5). L'unité de rectification (8) est couplé au bâti de machine (2) de la machine (1) au moyen d'une barre de remorquage (15) et peut toujours être orientée, dans son axe de déplacement (7), tangentiellement au rail (5) au moyen de conditions géométriquement fixes entre une distance de tourillon rotatif 2*l ou une distance d'essieu 2*l et un point de liaison articulée (P3) de la barre de remorquage (15). L'invention concerne en outre un procédé dans lequel la machine (1) se déplace sur une courbure de voie de rayon arbitraire et, grâce au couplage mécanique de l'unité de rectification (8) au bâti de machine (2) au moyen de la barre de remorquage (15), l'unité de rectification (8) est automatiquement orientée tangentiellement au rail (5). L'invention permet une amélioration de la qualité du résultat de rectification et une augmentation concomitante de la capacité de rectification et une économie par rapport à l'état de la technique, en particulier dans le cas de courbures de voie ayant de petits rayons. .
EP20815752.9A 2019-12-16 2020-11-25 Machine mobile et procédé d'usinage de la surface d'un champignon de rail Active EP4077810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA403/2019A AT523354A1 (de) 2019-12-16 2019-12-16 Verfahrbare Maschine und Verfahren zum Bearbeiten der Oberfläche eines Schienenkopfes
PCT/EP2020/083269 WO2021121884A1 (fr) 2019-12-16 2020-11-25 Machine mobile et procédé d'usinage de la surface d'un champignon de rail

Publications (3)

Publication Number Publication Date
EP4077810A1 true EP4077810A1 (fr) 2022-10-26
EP4077810B1 EP4077810B1 (fr) 2024-07-17
EP4077810C0 EP4077810C0 (fr) 2024-07-17

Family

ID=73598845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20815752.9A Active EP4077810B1 (fr) 2019-12-16 2020-11-25 Machine mobile et procédé d'usinage de la surface d'un champignon de rail

Country Status (3)

Country Link
EP (1) EP4077810B1 (fr)
AT (1) AT523354A1 (fr)
WO (1) WO2021121884A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114279314B (zh) * 2021-12-30 2022-12-09 武汉大学 一种钢轨修复后处理策略制定方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT357593B (de) * 1977-02-21 1980-07-25 Plasser Bahnbaumasch Franz Kontinuierlich verfahrbare schienenschleif- maschine
FR2584040B2 (fr) * 1985-06-26 1990-08-10 Regie Autonome Transports Vehicule guide a essieux orientables

Also Published As

Publication number Publication date
AT523354A1 (de) 2021-07-15
WO2021121884A1 (fr) 2021-06-24
EP4077810B1 (fr) 2024-07-17
EP4077810C0 (fr) 2024-07-17

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