EP0125348B1 - Maschine zur Wiederherstellung des Profils von Schienenköpfen - Google Patents

Maschine zur Wiederherstellung des Profils von Schienenköpfen Download PDF

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Publication number
EP0125348B1
EP0125348B1 EP83200699A EP83200699A EP0125348B1 EP 0125348 B1 EP0125348 B1 EP 0125348B1 EP 83200699 A EP83200699 A EP 83200699A EP 83200699 A EP83200699 A EP 83200699A EP 0125348 B1 EP0125348 B1 EP 0125348B1
Authority
EP
European Patent Office
Prior art keywords
grinding
plane
rail
theoretical
machine
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.)
Expired
Application number
EP83200699A
Other languages
English (en)
French (fr)
Other versions
EP0125348A1 (de
Inventor
Frédy Scheuchzer
Fritz Bühler
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.)
LES FILS D'AUGUSTE SCHEUCHZER SA
Original Assignee
LES FILS D'AUGUSTE SCHEUCHZER 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 LES FILS D'AUGUSTE SCHEUCHZER SA filed Critical LES FILS D'AUGUSTE SCHEUCHZER SA
Priority to AT83200699T priority Critical patent/ATE22949T1/de
Priority to DE8383200699T priority patent/DE3366980D1/de
Priority to EP83200699A priority patent/EP0125348B1/de
Priority to US06/610,383 priority patent/US4621460A/en
Priority to CA000454403A priority patent/CA1241561A/fr
Priority to DD84263084A priority patent/DD219230A5/de
Priority to ES532531A priority patent/ES532531A0/es
Priority to JP59096749A priority patent/JPS603302A/ja
Publication of EP0125348A1 publication Critical patent/EP0125348A1/de
Application granted granted Critical
Publication of EP0125348B1 publication Critical patent/EP0125348B1/de
Expired 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
    • 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 present invention relates to a machine for reprofiling the head of the rails comprising one or more grinding heads per row of rails, means for positioning and advancing the cutting tool or tools on the head, the grinding head or heads being arranged around the mushroom so as to create one or more facets determined by the theoretical tangents along one, respectively several, generating the theoretical profile of the mushroom.
  • a rail head grinding vehicle is equipped with two groups of grinding heads per rail row. Each group includes four grinding heads forming a grinding shoe suspended from the vehicle chassis. Two pads facing each other, one per row of rails, are connected by their middle part to a connecting element. Each shoe is angularly displaceable in a transverse plane of the track in order to allow the orientation of the grinding heads to be modified and thus to be able to correct the whole of the fungus in several passages.
  • each grinding head is provided with means allowing its individual pivoting with respect to the other grinding wheels of the grinding shoe and parallel to a transverse plane of the track, thus increasing the possibilities of approaching the profile of the mushroom.
  • Means for changing the inclination of the pads and / or grinding heads step by step are provided.
  • a jack and two drawbars articulated to a console fixed under the vehicle chassis ensure the suspension of each grinding pad, the jack ensuring on the one hand the lifting of the pad for walking high and on the other hand the adjustment of the support pressure of the skate on the line of rails.
  • Each grinding head can be individually adjusted in height with respect to the grinding pad by means of a slide.
  • the possibilities of adjusting the inclination of the pad as well as the adjustment of the inclination of each grinding head relative to the pad allowing an optimal approach to the theoretical curve of the profile of the mushroom.
  • the set of grinding heads forming the same shoe are applied integrally to the rail without having the possibility of individually controlling the advance of each grinding wheel, which can, of course, be positioned in height relative to the other grinding wheels. This positioning takes place by means of a screw controlled by a handwheel before the start of grinding and cannot be changed during the advance of the machine.
  • no means for controlling the positioning of the pad is described except the lifting cylinder which is also used for adjusting the bearing force of the pad on the rail.
  • the skate system is satisfactory if the generators are relatively tight.
  • the ripples are eliminated as a function of the length of the pad, that is to say the extreme distance between the grinding heads.
  • the work control is difficult and the grindstones tend to copy the undulations on the burrs, because the shoe is no longer guided.
  • CH-A-614.476 also describes a machine for grinding the running surface of the rails comprising a device for controlling the advance of the controlled cutting tool according to the dimensions of the corrugation and the wear of the 'tool, but not according to the theoretical tangent to the profile of the fungus.
  • the present invention aims to overcome these drawbacks by proposing a machine avoiding grinding of the profile of the fungus beyond the theoretical tangent to the desired profile (theoretical).
  • each grinding head comprises a member located in the plane of the facet or in a parallel plane detecting the arrival of the cutting tool in the plane of the theoretical tangent and controlling the blocking of the means for positioning and advancing the cutting tool against the fungus as soon as the plane of the theoretical tangent is attent.
  • the advantages obtained thanks to the invention consist in that the cutting tool cannot advance beyond the plane of the predetermined theoretical tangent which avoids too deep grinding or partial grinding and makes it possible to obtain an optimal approach of the profile.
  • a tilting mechanical stop can be placed facing the cutting tool and at the end of its tilting, under the action of the advance of the tool, the advance of the grinding head is blocked, the position of the stop being such that at the end of its tilting the active face of the cutting tool has reached the plane of the theoretical tangent.
  • the stop acts directly or indirectly through a proximity sensor, on a hydraulic or pneumatic valve of the supply circuit of a positioning cylinder.
  • a pneumatic sensor can be used, the air jet of which is placed on the theoretical tangent and as soon as the cutting tool arrives in front of the orifice through which the air exits it disturbs the air jet, this disturbance being detected the blocking valve of the positioning cylinder is actuated.
  • the grinding heads are mainly used grouped and connected to a guided grinding base on the one hand in the vertical median plane of the rail, that is to say the longitudinal plane which passes through the axis of symmetry of the transverse profile of the rail, and on the other hand in height by pressing on the surface of the rails, for example by means of rollers or pads.
  • the grinding heads depending on this base are inclined at different angles in a plane transverse to the rails, that is to say perpendicular to the longitudinal direction of the rails.
  • the angle of inclination of each head can be modified, either step by step between two predetermined limit values, or take one or the other of two predetermined values.
  • Each grinding head (fig. 2, 3) comprises a frame 1 provided with two pairs of orifices 27a, 27b by which is fixed to a grinding base installed on a grinding vehicle, an electric motor 2 carrying the tool section in the form of a grinding wheel 3 driven by means of the spindle 4 and suspended from the chassis 1 by four pendulums 5, 6, 7, 8 forming two suspension parallelograms 5, 6 and 7, 8.
  • the pendulums 5 and 7 are articulated on one side on an axis 9 secured to the chassis 1 and on the other hand on the motor cage 2 by articulations 5a respectively 7a.
  • the pendulums 6, 8 which are in fact levers of the first kind, are articulated by an intermediate point to an axis 10 secured to the chassis 1 and by one of their ends 6a respectively 8a to the motor cage 2.
  • the second end of the lever 6 applies or abuts the rod 11 of a jack 12, preferably hydraulic, secured to the chassis 1, while the second end of the lever 8 is articulated to the rod 13 of a jack 14, preferably pneumatic, suspended by a hinge 15 to a projection 1a of the chassis 1.
  • the jack 12 is the jack for positioning the grinding wheel while the jack 14 is the grinding jack, that is to say the one which regulates the bearing force of the tool on the rail.
  • a lever bent 17 from the inside of the angle so that its end 18 is disposed facing the peripheral part of the active surface of the grinding wheel 3.
  • This end 18 is provided with a lug 19 of a material having a greater abrasion resistance than that of the grinding wheel 3.
  • the second end 20 of the lever 17 has an approximately perpendicular projection to the arm of the adjacent lever which is subjected to the force of a spring 21 which causes the lever 17 to tilt so that the lug 19 is in the rest position in the plane A (dotted line) held against a stopper by illustrated.
  • valve 22 can be replaced by a proximity detector detecting the approach of the end 20 of the lever and controlling by an electro-hydraulic or electro-pneumatic circuit the blocking of the supply to the cylinder of the jack 12.
  • a proximity detector 24, in particular a pneumatic detector instead of the tilting lever 17, it is possible to use a proximity detector 24, in particular a pneumatic detector.
  • the pneumatic detector 24 sends a jet of air through a nozzle compressed parallel to the active surface of the grinding wheel 3, the nozzle being placed exactly on the theoretical tangent T.
  • the lateral surface of grinding wheel 3 approaches the nozzle disturbs the air jet and this disturbance being detected by an electro-hydraulic circuit or electro-pneumatic acts as previously on the positioning cylinder 12.
  • FIG. 4 there is shown quite schematically a grinding base 25 comprising three referenced grinding heads 26, a grinding head 26 corresponds to a unit shown in FIGS. 1 and 2.
  • the three grinding heads 26 are secured to each other by rods 27 'while the heads situated at the ends are fixed to the base 25 by guide rods 27 fixed to the orifices 27a and 27b of their respective chassis 1 (FIG. 2 + 3).
  • Each grinding head is fixed at a different inclination from the others so in a single pass the rail head is reprofiled according to three generators G1, G2, G3 (fig. 1) by creating tangential facets containing the corresponding theoretical tangents T1, T2 respectively , T3. If the theoretical tangents are not reached in a single pass, a second or even several passages are carried out until the desired profile is obtained.
  • the frame 28 of the base 25 rests on two legs 29, 30 provided with two pads 31 on the rail rolling surface 23.
  • the pads 31 can be replaced by rollers 35.
  • Cylinders like those referenced 33 in FIG. 6, guide the base 25 in the horizontal plane. by pressing rollers 34 against the inner side surface of the mushroom.
  • the grinding heads 26 can either be mounted on the frame 28 with an invariable inclination with respect to each other (fig. 4) and in this case there are two possibilities 1) the angle of inclination of the heads cannot be modified, 2) one can modify the angle of inclination of heads in block, or one can modify the inclination of each head independently of the others are between two limit values, as shown in FIG. 5 which will be described later.
  • FIG. 6 we have shown the means by which the angle of inclination of a grinding head or of multiple heads can be varied, as shown in FIG. 4, mounted on a grinding base. It is a front view corresponding to FIG. 5, certain parts having been omitted.
  • the base shown in the figure 5 presents as a difference from that of Figure 4 the fact that the heads are mounted so that one can change their angle of inclination independently of one another.
  • the shoe 31 has been replaced by a roller 35.
  • the same references followed by a zero have been used for the elements of FIG. 5 corresponding to FIG. 4.
  • the chassis 280 rests on the running surface of the rail 23 by rollers 35 and it is guided horizontally by jacks 33 and rollers 340.
  • the chassis 280 is composed of two tubular beams 36 and 37 fitted with sheets having, viewed from the front, a triangular section.
  • the rods 270 are mounted on a pendulum 38 (in dotted lines) suspended from the frame 280 of the grinding base 250 by a jack 39.
  • the two rods 270 are guided in two circular grooves 40, 41 corresponding to lines 40a and 41a of FIG. 7.
  • the grooves 40 and 41 are arcs of a circle centered at point 0'1 which is the center of curvature of an arc of a circle of the profile of the delimited mushroom by the two tangents T'l and T'2 forming an angle B'1 which corresponds to the angle between the two extreme positions of the grinding head the angle being of the order for example of 10 °.
  • the grooves 40 and 41 may correspond to one of the arcs A1, A2, A3 in FIG. 7 of the lines 40a and 41a a or to the whole of the arc A1 + A2 + A3.
  • the heads 26 must remain inside one of the arcs A1, A2 or A3 as mentioned above and in this case the grooves 40 and 41 correspond to a portion of the one of these arcs so that the heads remain respectively inside arcs A'1, A "1, A” '1 or A'2, A "2, A"' 3 or A'3, A " 3, A "'3.
  • the heads 26 being integral with one another the fixing rods 27 of the two heads 26 situated at the ends are guided in grooves 40 and 41 and supported by a pendulum 38 and a jack 39 as shown in FIG. 6.
  • each head 260 is suspended from the frame 280 of the base 250 by a device similar to that shown in Figure 6.
  • each head 260 is suspended by rods 270 collaborating with grooves which they are provided with plates 43, 44, 45, 46 fixed to the frame 280 as shown in FIG. 6.
  • Two plates which will be called 42 and 47 are fixed behind the legs 290 respectively 300 of the base 250.
  • the grooves of each pair of plates 42, 43 or 44, 45 or 46, 47 correspond respectively to one of the arcs A1, A2, A3 (fig. 7) or to all of the arcs A1 + A2 + A3.
  • the guide rods 270 are connected by pendulums 38 suspended and driven by jacks 39 not shown.
  • Changing the inclination of a grinding head (fig. 5) or of a set of heads (fig. 4) between two limit values can be achieved either by changing the inclination step by step, the drive being controlled for example by a motor, or by having the possibility of giving the inclination two determined values.
  • a base like that shown in FIG. 4 can be considered, the heads of which are respectively 70 °, 50 ° and 40 ° and after changing the angle using, for example , of the device of Figure 6 the respective inclination of the heads is 60 °, 40 ° and 30 °.
  • a grinding base can be composed of one or more grinding heads and in the case of a base with several heads the angle of inclination can either be modified as a block for all the heads or independently of one of the another, that is to say the heads are mounted fixed on the grinding base at a determined inclination.

Claims (8)

1. Maschine zum Reprofilieren des Schienenkopfes (23) mit einem oder mehreren Schleifköpfen (26, 260) je Schienenstrang, mit Positionierungs- und Vorschubmitteln für das oder die Schnittwerkzeuge (3) auf dem Schienenkopf, wobei der oder die Schleifköpfe so um den Schienenkopf angeordnet sind, duss eine oder mehrere Facetten gebildet werden, die durch die theoretischen Tangenten (T1, T2, T3) entlang einer bzw. mehrerer Erzeugender (G1, G2, G3) des theoretischen Profils des Schienenkopfes bestimmt werden, dadurch gekennzeichnet, dass jeder Schleifkopf ein Organ (17, 24) in der Ebene der Facette oder in einer parallel liegenden Ebene hat, welches die Ankunft des Schnittwerkzeuges (3) in der Ebene der theoretischen Tangenten meldet und die Blockierung der Positionierungs-und Vorschubmittel des Schnittwerkzeuges in Richtung auf den Schienenkopf steuert, sobald die Ebene der theoretischen Tangente erreicht ist.
2. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass das Organ, welches meldet, dass die Ebene der theoretischen Tangente erreicht ist, einen mechanischen Anschlag (19) hat, der dazu eingerichtet ist, unter Einwirkung des Schnittwerkzeuges (3) vorzugsweise aus einer Ruhestellung heraus bewegt zu werden und die Blockierung des Vorschubs des Schnittwerkzeuges zu steuern, sobald die Ebene der Tangente erreicht ist.
3. Maschine nach Anspruch 2, dadurch gekennzeichnet, dass der mechanische Anschlag mechanisch auf ein hydraulisches oder pneumatisches Ventil (22) wirkt, das die Positionierungs- und Vorschubmittel blockiert.
4. Maschine nach Anspruch 2, dadurch gekennzeichnet, dass dem mechanischen Anschlag ein Näherungsdetektor (24) zugeordnet ist, der die Position des Anschlags meldet, wenn die Ebene der theoretischen Tangente erreicht ist, und ein hydraulisches oder pneumatisches Ventil steuert, das die Positionierungs- und Vorschubmittel blockiert.
5. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel, die melden, dass die Ebene der theoretischen Tangente erreicht ist, einen pneumatischen Detektor haben, der ein pneumatisches oder hydraulisches Ventil steuert, welches die Positionierungs- und Vorschubmittel blockiert.
6. Maschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ein oder mehrere Schleifköpfe (26, 260) auf einer Schleifbasis (25, 250) montiert sind, wobei die aktive Schleiffläche des Schnittwerkzeuges jedes Schleifkopfes parallel zu einer Ebene einer anderen theoretischen Tangente angeordnet ist, und dass die Schleifbasis mit Führungsmitteln für eine Führung parallel zur Schienenachse und zur vertikalen Mittelebene der Schiene ausgerüstet ist.
7. Maschine nach Anspruch 6, dadurch gekennzeichnet, dass die Schleifbasis mehrere Köpfe hat, die fest aneinander montiert sind, wobei der Neigungswinkel jedes Kopfes verschieden von dem der anderen ist, und dass die Basis mit Mitteln, vorzugsweise Führungsnuten (40, 41) aufweisenden Platten, versehen ist, um die Neigung aller Köpfe in Bezug auf eine quer zur Schiene liegende Ebene um ein bestimmtes Krümmungszentrum des theoretischen Profils des Schienenkopfes zu verändern, wodurch die sukzessive Bildung von zwei oder mehreren Facetten ermöglicht wird, die den dem erwähnten Krümmungszentrum entsprechenden Kreisbogen annähern.
8. Maschine nach Anspruch 6, dadurch gekennzeichnet, dass die Schleifbasis mehrere Schleifköpfe hat, die voneinander unabhängig auf der Basis montiert sind, und dass jeder Kopf mit Mitteln ausgerüstet ist, um seinen Neigungswinkel in einer quer zur Schiene liegenden Ebene um ein oder mehrere Krümmungszentren der Kreisbögen zu verändern, welche das Schienenprofil bilden.
EP83200699A 1983-05-17 1983-05-17 Maschine zur Wiederherstellung des Profils von Schienenköpfen Expired EP0125348B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AT83200699T ATE22949T1 (de) 1983-05-17 1983-05-17 Maschine zur wiederherstellung des profils von schienenkoepfen.
DE8383200699T DE3366980D1 (en) 1983-05-17 1983-05-17 Machine for reprofiling rail heads
EP83200699A EP0125348B1 (de) 1983-05-17 1983-05-17 Maschine zur Wiederherstellung des Profils von Schienenköpfen
US06/610,383 US4621460A (en) 1983-05-17 1984-05-15 Machine for reshaping rail heads
CA000454403A CA1241561A (fr) 1983-05-17 1984-05-16 Machine pour le reprofilage du champignon des rails
DD84263084A DD219230A5 (de) 1983-05-17 1984-05-16 Maschine zum reprofilieren eines schienenkopfes
ES532531A ES532531A0 (es) 1983-05-17 1984-05-16 Maquina para el reperfilado de la cabeza de los rieles
JP59096749A JPS603302A (ja) 1983-05-17 1984-05-16 レ−ル頭部の削成装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83200699A EP0125348B1 (de) 1983-05-17 1983-05-17 Maschine zur Wiederherstellung des Profils von Schienenköpfen

Publications (2)

Publication Number Publication Date
EP0125348A1 EP0125348A1 (de) 1984-11-21
EP0125348B1 true EP0125348B1 (de) 1986-10-15

Family

ID=8190954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200699A Expired EP0125348B1 (de) 1983-05-17 1983-05-17 Maschine zur Wiederherstellung des Profils von Schienenköpfen

Country Status (8)

Country Link
US (1) US4621460A (de)
EP (1) EP0125348B1 (de)
JP (1) JPS603302A (de)
AT (1) ATE22949T1 (de)
CA (1) CA1241561A (de)
DD (1) DD219230A5 (de)
DE (1) DE3366980D1 (de)
ES (1) ES532531A0 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH654047A5 (fr) * 1983-09-16 1986-01-31 Speno International Procede et dispositif pour le reprofilage en continu des rails d'une voie ferree.
ATE66030T1 (de) * 1987-11-07 1991-08-15 Scheuchzer Fils Auguste Schleifmaschine fuer die reprofilierung von schienenkoepfen.
CH678341A5 (de) * 1989-03-02 1991-08-30 Speno International
CN103924491A (zh) * 2014-04-22 2014-07-16 北京二七机车工业有限责任公司 钢轨打磨车打磨头垂直升降装置
EP3844344A4 (de) 2018-08-27 2022-08-03 Harsco Technologies LLC Schienenfräsfahrzeug
JP2024500798A (ja) 2020-12-22 2024-01-10 シュヴェーアバウ・インテルナツィオナール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシャフト 成形物を削正する装置及び方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2035154A (en) * 1935-01-29 1936-03-24 Faries Robert Rail grinding machine
US3358406A (en) * 1965-10-14 1967-12-19 Speno International Rail grinder
CH529260A (fr) * 1970-08-14 1972-10-15 Speno Internat S A Procédé de meulage des ondes longues d'ondulation des rails de chemin de fer et dispositif pour sa mise en oeuvre
DE2410564C3 (de) * 1974-03-06 1978-08-10 Georg Robel Gmbh & Co, 8000 Muenchen Schienenkopf-Nachformschleifmaschine
DE7407724U (de) * 1974-03-06 1978-11-09 Georg Robel Gmbh & Co, 8000 Muenchen Schienenkopf-nachformschleifmaschine
CH592780A5 (de) * 1976-01-07 1977-11-15 Speno International
CH606616A5 (de) * 1976-02-18 1978-11-15 Speno International
CH614476A5 (de) * 1977-10-10 1979-11-30 Scheuchzer Auguste Les Fils D
AT359108B (de) * 1977-11-28 1980-10-27 Plasser Bahnbaumasch Franz Schienenschleifmaschine zum abschleifen von unregelmaessigkeiten der schienen-fahrflaeche
US4178724A (en) * 1978-03-23 1979-12-18 Harsco Corporation Rail grinding system
AT369809B (de) * 1979-08-14 1983-02-10 Plasser Bahnbaumasch Franz Gleisverfahrbare maschine zum abtragen der schienenkopfoberflaechen-unregelmaessigkeiten
CH633336A5 (fr) * 1980-01-09 1982-11-30 Speno International Machine de chantier ferroviaire pour la rectification du champignon des rails.

Also Published As

Publication number Publication date
JPS603302A (ja) 1985-01-09
ES8504300A1 (es) 1985-04-01
DE3366980D1 (en) 1986-11-20
EP0125348A1 (de) 1984-11-21
CA1241561A (fr) 1988-09-06
ES532531A0 (es) 1985-04-01
US4621460A (en) 1986-11-11
ATE22949T1 (de) 1986-11-15
DD219230A5 (de) 1985-02-27

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