EP4063563B1 - Schleifmaschine - Google Patents

Schleifmaschine Download PDF

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Publication number
EP4063563B1
EP4063563B1 EP22162385.3A EP22162385A EP4063563B1 EP 4063563 B1 EP4063563 B1 EP 4063563B1 EP 22162385 A EP22162385 A EP 22162385A EP 4063563 B1 EP4063563 B1 EP 4063563B1
Authority
EP
European Patent Office
Prior art keywords
frame
grinding
wheels
grinding machine
motors
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
EP22162385.3A
Other languages
English (en)
French (fr)
Other versions
EP4063563A1 (de
Inventor
Claudio Favaron
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.)
Mecno Service SRL
Original Assignee
Mecno Service SRL
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Filing date
Publication date
Application filed by Mecno Service SRL filed Critical Mecno Service SRL
Publication of EP4063563A1 publication Critical patent/EP4063563A1/de
Application granted granted Critical
Publication of EP4063563B1 publication Critical patent/EP4063563B1/de
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
    • 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
    • E01B31/04—Sectioning or slitting, e.g. by sawing, shearing, flame-cutting
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2203/00—Devices for working the railway-superstructure
    • E01B2203/14—Way of locomotion or support
    • E01B2203/141—Way of locomotion or support on the track to be treated

Definitions

  • the present invention relates to a grinding machine particularly for the longitudinal profile of railway rails, railways and/or subways.
  • Said known machines substantially comprise a base frame provided with wheels for resting on the railway rail, this frame supporting two further frames, each of which supports two motors to whose shafts a pulley is integral which rotates a grinding wheel whose circumferential surface rests on the longitudinal profile of the rail.
  • a machine which substantially comprises a base frame which supports a large number of tangential wheels (minimum 24, maximum 96) positioned in line without an electric motor. Thanks to the inclined wheel/rail contact with the rail, the high-speed towed wheels are able to rotate and work the undulations of the longitudinal profile of the rail by friction.
  • EP 0 843 043 A1 discloses a grinding machine comprising several frames mounted on four wheels suitable to slide along rails.
  • two motors with respective grinding wheels are mounted in a vertical movable subframe. The respective positions of said grinding wheels may be varied.
  • the object of the invention is to eliminate these drawbacks and to provide a compact grinding machine with a reduced number of wheels for restoring the longitudinal profile of the rail which ensures effective processing of the same.
  • This object is achieved according to the invention with a grinding machine particularly for the longitudinal profile of the railway, tramway and/or subway rails as described in claim 1.
  • the grinding machine comprises a frame 2 mounted on four wheels 4 sliding along the rails 6 to be ground.
  • a frame 8 mounted on said frame 2 is a frame 8 provided with wheels 10 for supporting and sliding along the rails 6, which frame is provided with two vertical axis pistons 12 for moving a frame 14.
  • said frame 14 comprises a shelf 20 provided at the end with arms 22 for articulation to the frame 8.
  • Two pistons 24 allow the lowering and lifting of the shelf 20 with respect to the frame 14.
  • Three plates 26 are provided on the shelf 20 on which are mounted three electric motors 28, 28', with parallel axes, to whose shaft 30 a pulley 32 is integral in rotation and is also connected to an underlying grinding wheel 34 provided under the shelf 20.
  • two of the plates 26 are fixedly mounted with respect to the frame 14 while the plate 26 which supports the motor 28' is translatably constrained to the frame 14 thanks to the presence in said plate of slotted holes 36 in which screws 35 are engaged which also engage the plate 26.
  • all three plates are translatable with respect to the frame and can always be locked by engagement of the screws 35 engaging in the holes.
  • the motor 28 and the grinding wheel driven by it can be translated horizontally by a mechanical hydraulic system or by a motorized system which determines the automatic variation of the center distance of the grinding units.
  • the European grinding standards EN13231-3 must be followed, (see Tab 1 and Tab.
  • Table 1 Approval criteria for the longitudinal profile expressed in terms of allowed percentages of exceedances: Range of wavelengths (mm) 10-30 30-100 100-300 300-1000 Class 1 5% 5% 5% 5% Class 2 No 10% 10% No Table 2 Acceptance criteria for peak-to-peak limits Wavelength range (mm) 10-30 30-100 100-300 300-1000 Peak-to-peak value limits (mm) ⁇ 0.010 ⁇ 0.010 ⁇ 0.015 ⁇ 0.075
  • the operation of the machine according to the invention is as follows: once the frame 2, transported by the wheels 4 along the rails 6, has reached the area of the rail to be ground, the pistons 12 are operated so that the small wheels 10 rest on the rails 6.
  • the two pistons 24 are then actuated which cause the shelf 20 to descend until the grinding wheels 34 are positioned in contact with the upper surface of the rail.
  • the electric motors 28, 28' are then activated, which drive the wheels 34 in rotation, which grind the rail profile.
  • the wheels are positioned inclined and converging with respect to the base frame and the rail so that each wheel has its axis of rotation not parallel to the longitudinal running surface of the rail. Thanks to this arrangement, the grinding wheels wear according to a certain transversal profile during machining, regardless of the shape deformed by the rail.
  • two grinding units are required with at least 3 wheels each oriented with respect to the axis see figure 8 .

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)
  • Polishing Bodies And Polishing Tools (AREA)
  • Disintegrating Or Milling (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (5)

  1. Schleifmaschine, umfassend:
    - einen ersten Rahmen (2), der auf vier Rädern (4) montiert ist, die entlang der zu schleifenden Schienen (6) gleiten,
    - einen zweiten Rahmen (8), der mit Rädern (10) zum Tragen und Gleiten entlang der Schienen (6) versehen ist,
    - Mittel zur vertikalen Bewegung des zweiten Rahmens (8) in Bezug auf den ersten Rahmen (2),
    - einen dritten Rahmen (14) oberhalb des zweiten Rahmens (8), an dem mindestens drei parallelachsigen Elektromotoren (28, 28') montiert sind, wobei an jeder Welle der Motoren (28, 28') eine Riemenscheibe (32) drehfest angebracht ist, mit der auch die Welle einer Schleifscheibe (34) fest verbunden ist,
    - Mittel zur vertikalen Bewegung des dritten Rahmens (14) in Bezug auf den zweiten Rahmen (8).
    dadurch gekennzeichnet, dass mindestens einer der drei Motoren (28, 28') und die mit ihm rotoidal verbundene Schleifscheibe (34) horizontal verschiebbar ist, um die Veränderung des jeweiligen Achsabstandes zwischen den drei durch die Motoren (28, 28') und die entsprechenden Schleifscheiben (34) gebildeten Schleifeinheiten zu bestimmen.
  2. Schleifmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der dritte Rahmen (14) am Ende mit Armen (22) zur gelenkigen Verbindung mit dem zweiten Rahmen (8) versehen ist.
  3. Schleifmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Motoren (28, 28') auf Platten (26) montiert sind, die ihrerseits von dem dritten Rahmen (14) getragen werden, und dass der Träger (26) des Motors (28') mit Langlöchern für den Eingriff von Schrauben (35) versehen ist, die auch in den dritten Rahmen (14) eingreifen.
  4. Schleifmaschine nach Anspruch 1, dadurch gekennzeichnet, dass sie ein mechanisch-hydraulisches System umfasst, das die automatische Veränderung des Achsabstandes von mindestens einer Schleifeinheit in Bezug auf die anderen bestimmt.
  5. Schleifmaschine nach Anspruch 1, dadurch gekennzeichnet, dass sie ein motorisiertes System umfasst, das die automatische Veränderung des Achsabstandes von mindestens einer der Schleifeinheiten in Bezug auf die anderen bestimmt.
EP22162385.3A 2021-03-24 2022-03-16 Schleifmaschine Active EP4063563B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000007190A IT202100007190A1 (it) 2021-03-24 2021-03-24 Macchina molatrice particolarmente per il profilo longitudinale delle rotaie ferroviarie, ferrotranviarie e/o metropolitane.

Publications (2)

Publication Number Publication Date
EP4063563A1 EP4063563A1 (de) 2022-09-28
EP4063563B1 true EP4063563B1 (de) 2023-05-10

Family

ID=76269941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22162385.3A Active EP4063563B1 (de) 2021-03-24 2022-03-16 Schleifmaschine

Country Status (4)

Country Link
EP (1) EP4063563B1 (de)
CN (1) CN115125779B (de)
ES (1) ES2950874T3 (de)
IT (1) IT202100007190A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH548488A (fr) * 1972-06-08 1974-04-30 Speno International Procede de rectification en voie d'une file de rails par meulage de sa surface de roulement et dispositif pour la mise en oeuvre de ce procede.
EP0789109A1 (de) * 1996-02-06 1997-08-13 Scheuchzer S.A. Schienenprofilierungsmaschine
IT1291080B1 (it) * 1996-11-12 1998-12-14 Mecno Srl Macchina molatrice tangenziale
CN1143917C (zh) * 1999-03-25 2004-03-31 维尔弗里德·舍夫 钢轨磨床中具有磨具的磨削组件的配置结构
US6620030B1 (en) * 2000-10-04 2003-09-16 Akron Special Machinery, Inc. Dual grindstone
JP6667143B2 (ja) * 2014-06-24 2020-03-18 ファマ エス．アール．エル． 接線研削機械

Also Published As

Publication number Publication date
ES2950874T3 (es) 2023-10-16
CN115125779A (zh) 2022-09-30
IT202100007190A1 (it) 2022-09-24
CN115125779B (zh) 2024-11-12
EP4063563A1 (de) 2022-09-28

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