EP3779045A1 - Dispositif et procédé d'usinage de la surface d'une tête d'un rail par affûtage de surface - Google Patents

Dispositif et procédé d'usinage de la surface d'une tête d'un rail par affûtage de surface Download PDF

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Publication number
EP3779045A1
EP3779045A1 EP20185598.8A EP20185598A EP3779045A1 EP 3779045 A1 EP3779045 A1 EP 3779045A1 EP 20185598 A EP20185598 A EP 20185598A EP 3779045 A1 EP3779045 A1 EP 3779045A1
Authority
EP
European Patent Office
Prior art keywords
rail
grinding
axis
rail head
rotation
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
EP20185598.8A
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German (de)
English (en)
Other versions
EP3779045B1 (fr
Inventor
Thomas Philipp
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.)
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Publication date
Application filed by Plasser und Theurer Export Von Bahnbaumaschinen GmbH filed Critical Plasser und Theurer Export Von Bahnbaumaschinen GmbH
Priority to PL20185598T priority Critical patent/PL3779045T3/pl
Publication of EP3779045A1 publication Critical patent/EP3779045A1/fr
Application granted granted Critical
Publication of EP3779045B1 publication Critical patent/EP3779045B1/fr
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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
    • 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
    • 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

Definitions

  • the invention relates to a device for processing the surface of a rail head of a rail by face grinding with at least two grinding bodies guided along a longitudinal axis of the rail by a sub-assembly on a grinding frame and an associated swivel device, which can be fastened to a vehicle traveling on rails by means of at least one height-adjustable suspension device.
  • the invention also relates to a method for operating the device.
  • the wheel of a rail vehicle causes measurable wear on the rails due to the constant passage: Examples include constant decelerating and braking before stop signals at train stations, as well as special rolling behavior in arches.
  • head checks can occur as a result. These are rail defects that represent fine cracks on the rail surface that occur at an angle of 45 ° to the direction of travel and can penetrate up to 2 mm into the interior of the material and initiate a rail break.
  • head checks should be removed when they are detected, or even better prevented by preventive rail processing, experts also speak of preventive grinding here. The processing is done in the classic way by milling or grinding the rail head.
  • the relevant section of the route must be blocked and, in some cases, the safety elements must also be removed. There is a minimum removal of approx. 1.5 mm based on the top edge of the rail head. As a result, the process can of rail milling can only be used in limited numbers until the safety-relevant wear limit of the rail is reached.
  • circumferential grinding EP 0 344 390 A1 of the EP 0 315 704 A1 and also EP 0 843 043 A1 described.
  • EP 2 390 415 A1 Another font for peripheral grinding is the EP 2 390 415 A1 , which shows a process with specially arranged, actively driven grinding tools to reduce the forces and moments acting on the frame.
  • the invention is based on the object of providing an improvement in the quality of the grinding pattern and the effectiveness in relation to the maintenance effort compared to the prior art for a grinding device of the type mentioned at the beginning.
  • a method for machining the surface of a rail head of a rail carried out by means of the grinding device is to be specified.
  • the invention provides that the grinding bodies can be pivoted by means of a swivel device and the grinding bodies and thus also their axis of rotation are inclined forwards in the working direction, a normal to the longitudinal axis of the rail with the axis of rotation of the respective grinding body at an angle other than 0 ° (angle of inclination ⁇ ) includes.
  • An essential part of the invention is then that by pivoting the individual, mutually independent sub-assemblies with a grinding body in an associated method by a superordinate control system any contact point (KP) on the upper rail running surface, as well as on the adjoining left and right rail side flanks, can be individually approached by a control.
  • KP contact point
  • the device comprises at least two sub-assemblies on a grinding frame, each consisting of a rotatably mounted grinding body and an associated pivoting device, by means of which the grinding body can be pivoted (angle of inclination ⁇ ).
  • a sub-assembly also consists of a large number of storage, control and electronic components.
  • the grinding tools are moved vertically to a defined position via a height-adjustable suspension device in order to achieve the desired processing depth and the requirements for the grinding pattern.
  • the actuators of the lifting unit can be pneumatic, hydraulic or electromechanical.
  • the common grinding frame is pressed onto the rail profile with a defined force. This predetermined contact force P enables a desired profile to be impressed.
  • the grinding bodies are preferably designed to be rotationally symmetrical to their axis of rotation, different designs, including, for example, disk or cup disks, being used.
  • machining unit itself is implemented using passively driven grinding tools. Passive means that the grinding tools are not actively driven.
  • the grinding wheel is driven by rolling due to friction in a contact point (KP) that is off-center to the axis of rotation of the grinding wheel is designed.
  • KP contact point
  • the bearing / shaft of the grinding wheel can also be equipped with a braking device.
  • the device comprises a measuring system by means of which the geometry of the rail can be measured.
  • Rail grinding takes place during operation, without any blocking pause.
  • the grinding device is integrated into a regular train (goods or passenger train) via a vehicle that can be driven on rails and independently produces the desired rail head profile over several passes based on specified target profiles. Normally, standard vehicles are always on the same tracks.
  • the processing device thus passes a point or position of the track several times in the course of a day and can produce a total change in the rail head profile through small processing interventions.
  • the method according to the invention for processing the rail surface provides that the actual geometry of the rail head recorded by means of a measuring system is compared with a target geometry via a controller and adjusting parameters for the engagement and thus for processing the rail head are determined therefrom.
  • the grinding bodies are moved in the vertical direction to a position defined by a control system via a suitable, height-adjustable suspension device already described for the device. This takes into account the desired processing depth and the demands on the quality of the micrograph.
  • the necessary profile corrections are stored in a central database; this can be done manually or automatically.
  • the desired rail head profile is finally achieved through several passes.
  • Fig. 1 shows a simplified vehicle with a possible attachment of a device 1 for machining a rail head 2 of a rail by face grinding.
  • the device 1 is mounted on a support frame of the vehicle via a height-adjustable suspension device 3.
  • a measuring system 4 for detecting the rail geometry is attached to the carrier frame of the vehicle and / or directly to the device 1.
  • a higher-level control system 5 is set up to process the data received from the measuring system 4, as well as to determine the setting parameters for operating and controlling the device.
  • Fig. 2 shows a possible design of the device 1 including sub-assemblies 6 with grinding bodies 7 on a grinding frame 8.
  • the grinding bodies 7 are shown without an inclination in the working direction 9.
  • the device 1 is lowered onto the rail head 2 via the height-adjustable suspension device 3 with frame wheels 10.
  • a sub-unit 6 contains the associated, guided, rotatably mounted grinding body 7 and an associated swivel device 11 as main components.
  • the sub-units 6 are constructed independently of one another and can be freely positioned within the possible range of motion by the control system 5. According to the wishes and processing specifications of the machine operator, the sub-assemblies 6 can also be controlled in groups; the rail head 2 can therefore also be processed in groups.
  • Fig. 3 shows possible engagement positions of the respective grinding body 7 of the device 1.
  • the invention provides that the grinding body 7 of the respective sub-assembly 6 can be pivoted by the associated pivoting device 11 and thus its axis of rotation 12 is inclined forward in the working direction 9, with a normal 13 on the
  • the longitudinal axis of the rail with the axis of rotation 12 of the grinding body 7 encloses an angle ⁇ other than 0 °.
  • the middle representation in Fig. 3 shows an engagement position which does not yet cause a passive drive of the grinding body 7.
  • a setting of the grinding body 7 in rotational movement by rolling due to friction at the contact point KP is only given by an eccentricity.
  • Fig. 3 in the right-hand illustration, in addition to the previously explained inclination with angle ⁇ to the front in the working direction 9, there is also a pivoting of the grinding body 7 with angle ⁇ about a longitudinal axis 15 of the rail.
  • This essential property of the device 1 enables the individual, mutually independent sub-assemblies 6 with the associated grinding body 7 to be pivoted in an associated process, using the higher-level control system 5 to approach any contact point KP on the surface of the rail head 2.
  • This surface contains the upper rail running surface as well as the adjoining left and right rail side flanks.
  • a simplified, possible structure of a sub-assembly 6 is shown.
  • the sub-assembly 6 can be rotated as a compact unit
  • Mounted guide rollers 16 or comparable machine elements can be pivoted on the grinding frame 8 by means of the pivoting device 11. This pivoting process of the grinding body 7 takes place through the angle ⁇ about the rail longitudinal axis 15 of the rail.
  • the grinding bodies 7 are mounted on a rotatable shaft by means of a suitable mount via roller bearings 17.
  • a force P is impressed on the grinding body 7 via a translational actuator, which is pneumatic, hydraulic or electromechanical.
  • This pressing force P presses the grinding body 7 at the contact point KP against the rail head 2, whereby a desired rail profile is impressed.
  • Fig. 4 the angle of inclination ⁇ of the grinding wheel 7 is not taken into account.
  • a possible braking device on the drive shaft of the grinding body 7 is also not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP20185598.8A 2019-08-13 2020-07-14 Dispositif et procédé d'usinage de la surface d'une tête d'un rail par affûtage de surface Active EP3779045B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL20185598T PL3779045T3 (pl) 2019-08-13 2020-07-14 Urządzenie i sposób obróbki powierzchni główki szyny poprzez szlifowanie czołowe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA275/2019A AT522861A1 (de) 2019-08-13 2019-08-13 Vorrichtung und Verfahren zum Bearbeiten der Oberfläche eines Schienenkopfes einer Schiene durch Stirnschleifen

Publications (2)

Publication Number Publication Date
EP3779045A1 true EP3779045A1 (fr) 2021-02-17
EP3779045B1 EP3779045B1 (fr) 2022-03-09

Family

ID=71614701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20185598.8A Active EP3779045B1 (fr) 2019-08-13 2020-07-14 Dispositif et procédé d'usinage de la surface d'une tête d'un rail par affûtage de surface

Country Status (4)

Country Link
EP (1) EP3779045B1 (fr)
AT (1) AT522861A1 (fr)
ES (1) ES2914578T3 (fr)
PL (1) PL3779045T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115075069A (zh) * 2022-06-23 2022-09-20 河北喆速科技有限公司 一种打磨装置和具有打磨装置的打磨车

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198673A (en) * 1986-12-17 1988-06-22 Permanent Way Equip Railway track grinding apparatus
EP0315704A1 (fr) 1987-11-07 1989-05-17 Les Fils D'auguste Scheuchzer S.A. Machine de meulage pour le reprofilage des champignons de rails
CH670666A5 (en) * 1986-02-28 1989-06-30 Scheuchzer Fils Auguste Rail head grinder for railway line - uses six sensors to measure heights at spaced points to control oscillating double grinding head
EP0344390A1 (fr) 1988-05-30 1989-12-06 Les Fils D'auguste Scheuchzer S.A. Machine de meulage de rails
FR2667629A1 (fr) * 1990-10-05 1992-04-10 Mach Voie Ferree Procede de meulage de rails et appareils pour la mise en óoeuvre de ce procede.
EP0606787A1 (fr) * 1993-01-15 1994-07-20 Travaux Du Sud-Ouest Machine pour le traitement en voie des rails de voie ferrée notamment le décalaminage et la rectification de l'usure ondulatoire
EP0708205A1 (fr) 1994-10-20 1996-04-24 Josef Dipl.-Ing. Pomikacsek Procédé et dispositif de traitement des surfaces de roulement de rails par rectification tangentielle
DE4437541A1 (de) * 1994-10-20 1996-05-02 Elektro Thermit Gmbh Schleifmaschine
EP0843043A1 (fr) 1996-11-12 1998-05-20 Mecno S.R.L. Machine de meulage tangentiel
EP1460176A1 (fr) 2003-03-20 2004-09-22 Stahlberg Roensch GmbH & Co. KG Dispositif pour reprofiler un rail par meulage
US6953386B1 (en) * 2004-07-19 2005-10-11 Railworks Corporation Active spark control
EP2390415A1 (fr) 2010-05-28 2011-11-30 Vossloh High Speed Grinding GmbH Agencement de pierre à aiguiser doté d'un moment et d'une force résultants minimisés
FR3025228A1 (fr) * 2014-09-03 2016-03-04 Robert Pouget Machine autonome de meulage des rails presentant des defauts d'usure ondulatoire verticale et laterale

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH670666A5 (en) * 1986-02-28 1989-06-30 Scheuchzer Fils Auguste Rail head grinder for railway line - uses six sensors to measure heights at spaced points to control oscillating double grinding head
GB2198673A (en) * 1986-12-17 1988-06-22 Permanent Way Equip Railway track grinding apparatus
EP0315704A1 (fr) 1987-11-07 1989-05-17 Les Fils D'auguste Scheuchzer S.A. Machine de meulage pour le reprofilage des champignons de rails
EP0344390A1 (fr) 1988-05-30 1989-12-06 Les Fils D'auguste Scheuchzer S.A. Machine de meulage de rails
FR2667629A1 (fr) * 1990-10-05 1992-04-10 Mach Voie Ferree Procede de meulage de rails et appareils pour la mise en óoeuvre de ce procede.
EP0606787A1 (fr) * 1993-01-15 1994-07-20 Travaux Du Sud-Ouest Machine pour le traitement en voie des rails de voie ferrée notamment le décalaminage et la rectification de l'usure ondulatoire
EP0708205A1 (fr) 1994-10-20 1996-04-24 Josef Dipl.-Ing. Pomikacsek Procédé et dispositif de traitement des surfaces de roulement de rails par rectification tangentielle
DE4437541A1 (de) * 1994-10-20 1996-05-02 Elektro Thermit Gmbh Schleifmaschine
EP0843043A1 (fr) 1996-11-12 1998-05-20 Mecno S.R.L. Machine de meulage tangentiel
EP1460176A1 (fr) 2003-03-20 2004-09-22 Stahlberg Roensch GmbH & Co. KG Dispositif pour reprofiler un rail par meulage
US6953386B1 (en) * 2004-07-19 2005-10-11 Railworks Corporation Active spark control
EP2390415A1 (fr) 2010-05-28 2011-11-30 Vossloh High Speed Grinding GmbH Agencement de pierre à aiguiser doté d'un moment et d'une force résultants minimisés
FR3025228A1 (fr) * 2014-09-03 2016-03-04 Robert Pouget Machine autonome de meulage des rails presentant des defauts d'usure ondulatoire verticale et laterale

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115075069A (zh) * 2022-06-23 2022-09-20 河北喆速科技有限公司 一种打磨装置和具有打磨装置的打磨车

Also Published As

Publication number Publication date
ES2914578T3 (es) 2022-06-14
PL3779045T3 (pl) 2022-06-20
AT522861A1 (de) 2021-02-15
EP3779045B1 (fr) 2022-03-09

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