WO2022161853A1 - Procédé et ensemble de broyage pour le broyage à sec d'au moins un rail d'une voie ferrée - Google Patents

Procédé et ensemble de broyage pour le broyage à sec d'au moins un rail d'une voie ferrée Download PDF

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Publication number
WO2022161853A1
WO2022161853A1 PCT/EP2022/051260 EP2022051260W WO2022161853A1 WO 2022161853 A1 WO2022161853 A1 WO 2022161853A1 EP 2022051260 W EP2022051260 W EP 2022051260W WO 2022161853 A1 WO2022161853 A1 WO 2022161853A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding
rail
grinding tool
longitudinal direction
support frame
Prior art date
Application number
PCT/EP2022/051260
Other languages
German (de)
English (en)
Inventor
Andreas Pfingstl
Thomas Weichenberger
Ralf-Peter Seidenkranz
Original Assignee
Robel 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 Robel Bahnbaumaschinen Gmbh filed Critical Robel Bahnbaumaschinen Gmbh
Publication of WO2022161853A1 publication Critical patent/WO2022161853A1/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

Definitions

  • the invention relates to a method and a grinding unit for dry grinding at least one rail of a track. Furthermore, the invention relates to a maintenance vehicle with at least one such grinding unit.
  • a grinding unit for grinding rails is known from EP 2 886 714 A1.
  • the grinding unit comprises circumferential grinding bodies, which are mounted to rotate freely about a respective grinding body axis of rotation and are moved at an acute angle to a longitudinal direction of the rail.
  • a grinding effect is created by the relative movement of a grinding body surface to a rail surface.
  • the resulting very hot abrasion particles are ejected laterally from the rail surface and are caught and sucked off by means of a shielding element.
  • the shielding element is exposed to high thermal and mechanical loads.
  • DE 28 01 111 A1 discloses a wet process for grinding off irregularities in the rail head surfaces.
  • grinding tools are moved in an oscillating manner over the rail to be ground.
  • water sprays are installed next to the grinding tool. nozzles that spray water from a water reservoir onto the rail.
  • the object of the invention is to create a simple, efficient and environmentally friendly method for dry grinding at least one rail of a track.
  • the at least one grinding tool is moved alternately in the first longitudinal direction of the rail and in the opposite second longitudinal direction of the rail by means of the at least one grinding tool drive relative to the support frame or the at least one rail, the at least one rail is ground in a simple and efficient manner.
  • the particles produced by the grinding have low kinetic energy and/or low thermal energy, so that the particles can be sucked off in a simple and efficient manner, as a result of which the grinding of the at least one rail is environmentally friendly.
  • the at least one grinding tool carries out an oscillating movement in the first rail longitudinal direction and in the opposite second rail longitudinal direction. The grinding takes place dry, ie without the supply of a liquid, in particular a cooling liquid.
  • the grinding takes place in particular without the supply of water. This ensures simple and efficient extraction of the particles produced by the grinding.
  • the particles produced by the grinding include grinding dust, such as ground metal particles from the at least one rail and/or grinding particles from the at least one grinding tool.
  • the at least one grinding tool preferably has a cross-sectional shape which, at least in sections, is negative to a desired cross-sectional shape or a desired Cross-sectional profile of the at least one rail is formed.
  • the at least one grinding tool is designed in particular as a grinding block or as a sliding block. Each grinding tool is preferably designed as a grinding block or slide block.
  • the at least one grinding tool drive is used to move the at least one grinding tool alternately in the first rail longitudinal direction and the second rail longitudinal direction relative to the support frame.
  • the at least one grinding tool drive is designed to be electric, pneumatic and/or hydraulic.
  • the at least one grinding tool drive is preferably designed as an eccentric drive that converts a rotational movement into an oscillating movement, in particular into an oscillating linear movement.
  • a method according to claim 2 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track. Due to the fact that the at least one grinding tool is moved exclusively translationally in the first rail longitudinal direction and the second rail longitudinal direction during the grinding, the kinetic energy and/or the thermal energy of the particles produced by the grinding is low. Due to the translatory movement in the first rail longitudinal direction and the second rail longitudinal direction, a section of the at least one rail to be ground is machined multiple times by the at least one grinding tool, as a result of which the grinding is carried out in a simple and efficient manner. During grinding, the at least one grinding tool in particular exclusively performs an oscillating linear movement in the first longitudinal direction of the rail and in the second longitudinal direction of the rail.
  • a method according to claim 3 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track. Because the at least one grinding tool does not rotate, the kinetic energy and/or the thermal energy of the particles produced by the grinding are low. The particles can be extracted easily and efficiently, which makes grinding environmentally friendly.
  • the at least one grinding tool does not have its own axis of rotation or axis of rotation about which the at least one grinding tool would rotate.
  • the at least one grinding tool is in particular not designed to be rotationally symmetrical to an axis of rotation.
  • a method according to claim 4 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track.
  • the at least one grinding tool is moved relative to the support frame at frequency fs during grinding.
  • the at least one grinding tool carries out an oscillating movement in the first rail longitudinal direction and the second rail longitudinal direction and at a frequency fs.
  • the frequency fs ensures simple and efficient grinding, since the at least one grinding tool carries out a relative movement to the at least one rail that is sufficient for grinding and, on the other hand, the kinetic energy and/or the thermal energy of the particles produced by the grinding and/or the mechanical load of the grinding unit is low.
  • a method according to claim 5 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track.
  • the at least one grinding tool is pressed against the at least one rail with the contact pressure FA during grinding.
  • the contact pressure FA ensures that the at least one grinding tool has a desired abrasive effect during the movement relative to the at least one rail and that the at least one grinding tool can still be moved in the first longitudinal direction of the rail and the second longitudinal direction of the rail by means of the grinding tool drive.
  • a method according to claim 6 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track.
  • the at least one grinding tool has the length Lw in the first rail longitudinal direction or in the second rail longitudinal direction and is moved during grinding with the amplitude As in an oscillating manner in the first rail longitudinal direction and the second rail longitudinal direction relative to the support frame.
  • the ratio As/Lw ensures a relative movement between the at least one grinding tool and the at least one rail, which is required for grinding.
  • the particles produced by grinding have low kinetic and/or thermal energy, so they can be easily extracted. If the grinding unit has several grinding tools, the defined range for the ratio As/Lw preferably applies to each grinding tool.
  • a method according to claim 7 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track.
  • the grinding unit preferably comprises at least two grinding tools that are moved synchronously with one another. Synchronously means in particular that the at least two grinding tools are moved predominantly, in particular exclusively, in the same longitudinal direction of the rail, i.e. predominantly, in particular exclusively, simultaneously in the first rail nenlteilscardi or the second rail longitudinal direction are moved.
  • the at least two grinding tools are arranged one after the other for grinding one of the rails in the first rail longitudinal direction or the second rail longitudinal direction and/or arranged side by side for grinding two rails transversely to the first rail longitudinal direction or the second rail longitudinal direction. This increases the section of at least one rail that is being ground, ie one of the rails or the two rails.
  • the grinding unit preferably comprises at least two grinding tools that are moved in opposite directions to one another. Opposite means in particular that the at least two grinding tools are moved predominantly, in particular exclusively, in different longitudinal rail directions, i.e. a first grinding tool in the first longitudinal rail direction and predominantly, in particular exclusively, at the same time a second grinding tool in the second longitudinal rail direction and vice versa.
  • the at least two grinding tools preferably grind one of the rails and/or two rails during the opposite movement.
  • the at least one grinding unit preferably has at least four grinding tools, with a first grinding tool and a second grinding tool being moved in opposite directions to one another for grinding a first rail, and a third grinding tool and a fourth grinding tool being moved in opposite directions to one another for grinding a second rail.
  • the first grinding tool and the third grinding tool and/or the second grinding tool and the fourth grinding tool are preferably moved synchronously with one another.
  • the grinding tool preferably comprises a number N of grinding tools, the number N being even and preferably divisible by four.
  • a method according to claim 8 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track.
  • the grinding unit has at least two grinding tools, which are moved alternately in opposite directions in different rail longitudinal directions.
  • the at least two grinding tools are thus moved in an oscillating manner and in opposite directions to one another.
  • a first grinding tool is moved, for example, in the first rail longitudinal direction, whereas a second grinding tool is moved predominantly, in particular exclusively, simultaneously in the opposite second rail longitudinal direction.
  • the opposite movement of the at least two grinding tools reduces a mechanical load on the grinding unit.
  • the at least two grinding tools grind one of the rails and/or two rails.
  • a method according to claim 9 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track.
  • the support frame is moved continuously and/or in sections to the at least one rail.
  • the support frame is preferably part of a chassis in which wheels, in particular rail wheels, are arranged on the support frame.
  • the chassis serves in particular to move the supporting frame with the at least one grinding tool arranged on it on the rails in the first rail longitudinal direction or the second rail longitudinal direction.
  • the support frame is moved continuously exclusively in one of the rail longitudinal directions, ie in the first rail longitudinal direction or in the second rail longitudinal direction.
  • the support frame is moved at a working speed VA relative to the at least one rail or rails, with the following particularly applying: 0.1 km/h ⁇ VA ⁇ 10 km/h, in particular 0.5 km/h ⁇ VA ⁇ 8 km/h, and in particular 1 km/h ⁇ VA ⁇ 6 km/h.
  • the following preferably applies: 0.1 km/h ⁇ VA ⁇ 4 km/h, in particular 0.2 km/h ⁇ VA ⁇ 3 km/h, and in particular 0.3 km/h ⁇ VA ⁇ 2 km/h.
  • a number M of grinding operations is carried out at a point on the at least one rail that is to be ground, with the following preferably applying: 2 ⁇ M ⁇ 20, in particular 3 ⁇ M ⁇ 18, and in particular 4 ⁇ M ⁇ 16.
  • the number M depends in particular on a frequency fs and/or an amplitude As with which the at least one grinding tool is moved relative to the support frame, on a length Lw of the at least one grinding tool in the first longitudinal direction of the rail and/or on a number N of the grinding tools and/or the working speed VA.
  • a method according to claim 10 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track. Due to the fact that the particles produced by the grinding have low kinetic energy and/or low thermal energy, the particles can be easily and efficiently extracted.
  • the suction takes place at the same time as the grinding and/or subsequently to the grinding.
  • the suction takes place in particular transversely to the first rail longitudinal direction, preferably perpendicular to the first rail longitudinal direction.
  • the particles include grinding dust, in particular metal particles from the at least one rail and/or grinding particles from the at least one grinding tool.
  • the suction takes place in particular by means of at least one suction device.
  • the at least one suction device preferably comprises at least one fluid flow generator, at least one suction line with at least one associated suction opening, at least one filter and/or at least one container for collecting the suctioned particles. Due to the suction, the particles produced by the grinding do not contaminate the track bed. Because the particles produced by the grinding do not remain on the rail, the grinding result is not impaired, for example by a subsequent rail wheel pressing the particles onto the rail and the particles themselves possibly having an abrasive effect on the rail.
  • a method according to claim 11 ensures a simple, efficient and environmentally friendly grinding of at least one rail of a track. Because the particles produced by the grinding are blown in the direction of at least one suction opening, the particles can be sucked off easily, efficiently and reliably through the at least one suction opening during the grinding.
  • the blowing in and/or sucking off takes place in particular transversely, preferably perpendicularly, to the first longitudinal direction of the rail.
  • the injection is preferably carried out by means of at least one injection device.
  • the at least one injection device comprises in particular at least one fluid flow generator and/or at least one injection line with at least one associated injection opening.
  • the invention is also based on the object of creating a grinding unit that enables dry grinding of at least one rail of a track in a simple, efficient and environmentally friendly manner.
  • the at least one grinding tool drive is designed such that the at least one grinding tool is moved alternately in the first longitudinal direction of the rail and in the opposite second longitudinal direction of the rail relative to the support frame or the at least one rail.
  • the particles produced by grinding have low kinetic energy and/or low thermal energy, so these particles can be easily and efficiently extracted.
  • the support frame is in particular part of a chassis in which wheels, in particular rail wheels, are arranged on the support frame. The wheels serve in particular to move and/or guide the support frame or the at least one grinding tool on the rails, preferably during grinding.
  • the at least one grinding tool has a carrier with a grinding body arranged on it.
  • the respective grinding tool or the respective grinding body preferably has a cross-sectional shape which is shaped negatively, at least in sections, with respect to a desired cross-sectional shape or a desired cross-sectional profile of a rail.
  • the at least one grinding tool does not form an axis of rotation or Axis of rotation and/or is not rotationally symmetrical to an axis of rotation or axis of rotation.
  • the at least one grinding tool drive is used to move the at least one grinding tool alternately in the first rail longitudinal direction and the second rail longitudinal direction relative to the support frame.
  • the at least one grinding tool drive is designed to be electric, pneumatic and/or hydraulic.
  • the at least one grinding tool drive is preferably designed as an eccentric drive which converts a rotational movement into an oscillating movement, in particular into an oscillating linear movement.
  • the grinding unit is designed for dry grinding at least one rail of a track.
  • the grinding unit therefore has no supply of a liquid, in particular a cooling liquid such as water.
  • the at least one grinding tool is used for dry grinding at least one rail of a track. Accordingly, no supply of a liquid, in particular a cooling liquid such as water, is assigned to the at least one grinding tool.
  • the at least one grinding tool is designed in particular as a grinding block or slide block. Each grinding tool is preferably designed as a grinding block or slide stone.
  • a grinding unit according to claim 13 ensures that at least one rail of a track is ground in a simple, efficient and environmentally friendly manner.
  • the grinding unit preferably comprises at least two grinding tools that are moved synchronously with one another. Synchronously means in particular that the at least two grinding tools predominantly, in particular exclusively, are in the same longitudinal direction of the rail are moved, ie predominantly, in particular exclusively, are moved at the same time in the first rail longitudinal direction or the second rail longitudinal direction.
  • the at least two grinding tools are arranged one after the other for grinding one of the rails in the first rail longitudinal direction or the second rail longitudinal direction and/or arranged side by side for grinding two rails transversely to the first rail longitudinal direction or the second rail longitudinal direction. This increases the section of at least one rail that is being ground, ie one of the rails or the two rails.
  • the grinding unit preferably comprises at least two grinding tools that are moved in opposite directions to one another. Opposite means in particular that the at least two grinding tools are moved predominantly, in particular exclusively, in different longitudinal rail directions, i.e. a first grinding tool in the first longitudinal rail direction and predominantly, in particular exclusively, at the same time a second grinding tool in the second longitudinal rail direction and vice versa.
  • the at least two grinding tools preferably grind one of the rails and/or two rails during the opposite movement.
  • the at least one grinding unit preferably has at least four grinding tools, with a first grinding tool and a second grinding tool being moved in opposite directions to one another for grinding a first rail and a third grinding tool and a fourth grinding tool being moved in opposite directions to one another for grinding a second rail be moved.
  • the first grinding tool and the third grinding tool and/or the second grinding tool and the fourth grinding tool are preferably moved synchronously with one another.
  • the grinding tool preferably comprises a number N of grinding tools, the number N being even and preferably divisible by four.
  • a grinding unit ensures that at least one rail of a track is ground in a simple, efficient and environmentally friendly manner. Due to the fact that the particles produced by the grinding have low kinetic energy and/or low thermal energy, the particles can be sucked off easily and efficiently by means of the at least one suction device.
  • the suction takes place at the same time as the grinding.
  • the suction takes place in particular transversely to the first longitudinal direction of the rail, preferably perpendicularly to the first longitudinal direction of the rail.
  • the at least one suction device preferably comprises at least one fluid flow generator, at least one suction line with at least one associated suction opening, at least one filter and/or at least one container for collecting the suctioned particles.
  • the at least one suction opening is arranged in particular laterally to a grinding plane.
  • the grinding plane is defined by a contact surface between the at least one rail and the at least one grinding tool.
  • the at least one suction opening is elongate and/or runs parallel to the grinding plane. Due to the suction, the particles produced by the grinding do not contaminate the track bed. Because the particles produced by the grinding do not remain on the rail, the grinding result is not impaired, for example by a subsequent rail wheel pressing the particles onto the rail and the particles themselves possibly having an abrasive effect on the rail.
  • a grinding unit according to claim 15 ensures that at least one rail of a track is ground in a simple, efficient and environmentally friendly manner.
  • the at least one grinding tool defines a dynamic grinding length Ls, which depends on a length Lw of the at least one grinding tool in the first longitudinal direction of the rail and on a movement length, in particular an amplitude As, of the at least one grinding tool in the first longitudinal direction of the rail and the second longitudinal direction of the rail.
  • the movement length or the amplitude As is defined by the grinding tool drive that is assigned to the respective grinding tool. If only one grinding tool that is moved by the grinding tool drive is assigned to a grinding tool drive, the grinding length Ls is the sum of the length Lw of the grinding tool and twice the movement length or twice the amplitude As.
  • the grinding length Ls results as the sum of a maximum distance between the ends of the grinding tools in the first Rail longitudinal direction and twice the movement length or twice the amplitude As.
  • the at least one suction opening which is assigned to the at least one grinding tool, defines a suction length LA. If only one suction opening is assigned to the at least one grinding tool, then the suction length LA results as the length of this suction opening in the first longitudinal direction of the rail.
  • the suction length LA results as the maximum distance between two suction openings in the first longitudinal direction of the rail, which are assigned to the at least one grinding tool.
  • An assignment to the at least one grinding tool is then given, when a grinding tool or a plurality of grinding tools are moved synchronously by means of an associated grinding tool drive and, as a result of this movement, particles produced by the grinding can be sucked off through the at least one suction opening.
  • An assignment is given in particular when the grinding length Ls and the suction length LA--viewed in the first longitudinal direction of the rail--overlap.
  • the suction length LA is essentially as large as the grinding length Ls, preferably greater than the grinding length Ls, so that particles produced by the grinding can be reliably extracted.
  • a grinding unit according to claim 16 ensures that at least one rail of a track is ground in a simple, efficient and environmentally friendly manner. Because the particles produced by the grinding are blown in the direction of at least one suction opening, the particles can be sucked off easily, efficiently and reliably through the at least one suction opening during the grinding.
  • the blowing in and/or sucking off takes place in particular transversely, preferably perpendicularly to the first rail longitudinal direction.
  • the at least one injection device comprises in particular at least one fluid flow generator and/or at least one injection line with at least one associated injection opening.
  • the at least one blowing opening is in particular elongate and/or runs parallel to a grinding plane.
  • the at least one blowing opening is in particular aligned in such a way that an exiting fluid flow is directed towards a grinding plane.
  • the grinding plane is defined by a contact surface between the at least one rail and the at least one grinding tool.
  • a grinding unit according to claim 17 ensures that at least one rail of a track is ground in a simple, efficient and environmentally friendly manner.
  • the pressing device is designed, for example, electromechanically, hydraulically and/or pneumatically.
  • the pressing device serves to advance or displace the at least one grinding tool transversely, in particular perpendicularly, to the first rail longitudinal direction.
  • the pressing device comprises, for example, at least one linear drive and/or at least one piston-cylinder unit.
  • the pressing device serves to press the at least one grinding tool against the at least one rail with the pressing force FA.
  • the contact pressure FA ensures that the at least one grinding tool has a desired abrasive effect during the movement relative to the at least one rail and that the at least one grinding tool can still be moved in the first longitudinal direction of the rail and the second longitudinal direction of the rail by means of the grinding tool drive.
  • the invention is also based on the object of creating a maintenance vehicle that allows dry grinding of at least one rail of a track in a simple, efficient and environmentally friendly manner.
  • the advantages of the maintenance vehicle according to the invention correspond to the advantages already described of the method according to the invention and the grinding unit according to the invention.
  • the maintenance vehicle is designed in particular as a rail vehicle or as a two-way vehicle and enables the at least one grinding unit to be moved on the rails or relative to the rails.
  • the maintenance vehicle includes in particular a vehicle tool frame on which wheels, preferably rail wheels, are rotatably mounted.
  • the maintenance vehicle preferably includes at least one travel drive.
  • the at least one grinding unit is arranged in particular on the vehicle frame.
  • FIG. 1 shows a schematic side view of a maintenance vehicle with a grinding unit according to a first exemplary embodiment
  • Fig. 2 shows a schematic plan view of the maintenance vehicle in Fig. 1,
  • FIG. 3 shows a side view of the grinding unit according to the first exemplary embodiment
  • Fig. 4 is a front view of the sanding unit in Fig. 3,
  • FIG. 5 shows a schematic side view of a maintenance vehicle with a grinding unit according to a second embodiment
  • Fig. 6 shows a schematic plan view of the maintenance vehicle in Fig. 5
  • 7 shows a side view of a grinding unit according to the second embodiment
  • Fig. 8 is a front view of the sanding unit in Fig. 7.
  • a maintenance vehicle 1 is used for the dry grinding of rails 2, 3 of a track 4.
  • the rails 2, 3 are fastened to sleepers 5, which are arranged in a ballast bed 6.
  • the maintenance vehicle 1 comprises a vehicle frame 7 on which running gears 8, 9 with rail wheels 10 rotatably mounted thereon are arranged.
  • the maintenance vehicle 1 is thus designed as a rail vehicle.
  • the maintenance vehicle 1 includes electric traction drives 11 which drive the rail wheels 10 arranged on the running gear 8 in rotation.
  • the maintenance vehicle 1 has an energy store 12 to supply the electric travel drives 11 with power.
  • the maintenance vehicle 1 includes a pantograph 13 and an internal combustion engine/generator unit 14. If an overhead line 15 is present, the energy store 12 is fed via the overhead line 15 and the pantograph 13, otherwise via the internal combustion engine/generator unit 14
  • the maintenance vehicle 1 includes a grinding unit 16 for dry grinding of the rails 2, 3.
  • the grinding unit 16 is fastened to the vehicle frame 7 between the running gears 8, 9.
  • the grinding unit 16 comprises a chassis 17 with a support frame 18 and four rail wheels 19, 20 mounted thereon.
  • the chassis 17 is fastened to an underside of the vehicle frame 7 facing the rails 2, 3.
  • the rail wheels 19 are associated with the first rail 2, whereas the rail wheels 20 are associated with the second rail 3.
  • the rail wheels 19, 20 are used to shift and/or guide the support frame 18 on the rails 2, 3.
  • the rail wheels 19 or the rail wheels 20 are mounted on the support frame 18 at a distance from one another in a horizontal x-direction.
  • the rail wheels 19 are mounted on the support frame 18 at a distance from the rail wheels 20 in a horizontal y-direction corresponding to the spacing of the rails 2, 3 from one another.
  • the rail wheels 19, 20 are attached to the support frame 18 by means of a respective spring element 21.
  • the rail wheels 19, 20 are rotatably mounted on the spring elements 21.
  • the spring elements 21 allow a displacement of the rail wheels 19, 20 relative to the support frame 18 in a vertical z-direction.
  • the x, y and z directions are perpendicular to each other and form a Cartesian coordinate system.
  • the grinding unit 16 includes four grinding tool drives Ai, A2, A3 and A4.
  • the individual grinding tool drives are denoted by Ai, A2, A3 and A4.
  • the grinding tool drives Ai and A2 are assigned to the first rail 2 and are arranged on a side of the support frame 18 facing the rail 2 .
  • the grinding tool drives Ai and A2 are arranged one after the other in the x-direction.
  • the grinding tool drives A3 and A4 are assigned to the second rail 3 and are arranged on a side of the support frame 18 facing the second rail 3 .
  • the grinding tool drives A3 and A4 are arranged one after the other in the x-direction.
  • the grinding tool drives Ai are designed as eccentric drives.
  • Each of the grinding tool drives Ai comprises an electric drive motor 22, an eccentric arm 23 and a linear guide 24.
  • the respective eccentric arm 23 is rotatably connected to a drive shaft 25 of the associated drive motor 22 and pivotably connected to the associated linear guide 24.
  • the respective eccentric arm 23 is connected to the drive shaft 25 eccentrically to an axis of rotation of the associated drive shaft 25 .
  • the respective linear guide 24 comprises guides 26, which run in the x-direction, and an associated carriage 27, which is movably guided in the x-direction by means of the guides 26.
  • the respective eccentric arm 23 is pivotally connected to the associated carriage 27 .
  • a rotary movement of the respective drive motor 22 or the drive shaft 25 causes the associated carriage 27 to be moved alternately or oscillating in a first longitudinal rail direction Di and in an opposite second longitudinal rail direction D.
  • the first rail longitudinal direction Di corresponds
  • the grinding unit 16 includes grinding tools Wij.
  • the index i characterizes which grinding tool drive Ai the respective grinding tool Wij belongs to, ie which grinding tool drive Ai the respective grinding tool Wij is moved by.
  • the grinding tool drive Ai is the grinding tools Wij
  • the grinding tool drive A2 is the grinding tools W j
  • the grinding tool drive A3 the grinding tool witness W3j and the grinding tool drive A4 assigned to the grinding tools W4j.
  • the grinding tools WH, W12 and W13 are therefore assigned to the grinding tool drive Ai
  • the grinding tools W21, W22 and W23 are assigned to the grinding tool drive A2.
  • the grinding tools W31, W32 and W33 are assigned to the grinding tool drive A3, whereas the grinding tools W41, W42 and W43 are assigned to the grinding tool drive A4.
  • the grinding tools Wij are sequentially attached in the x-direction to a carrier 28, which in turn is attached to the carriage 27 moved by the grinding tool drive Ai.
  • the respective linear guide 24 is attached to the support frame 18 . Because the rail wheels 19, 20 can be displaced in the vertical z-direction relative to the support frame 18, the rail wheels 19, 20 can also be displaced in the vertical z-direction relative to the grinding tools Wij, so that wear on the grinding tools Wij by a Relative movement between the rail wheels 19, 20 and the grinding tools Wij is automatically compensated.
  • the respective grinding tool Wij has a length Lw in the first rail longitudinal direction Di or in the second rail longitudinal direction D2.
  • a cross-sectional shape of the respective grinding tool Wij on a side facing the rails 2, 3 is negative to a target cross-sectional shape or a target cross-sectional profile of the Rails 2, 3 formed.
  • the grinding unit 16 includes a pressing device 29.
  • the pressing device 29 is arranged between the vehicle frame 7 and the supporting frame 18 and fastens the supporting frame 18 to the vehicle frame 7 in a height-adjustable manner in the z-direction.
  • the pressing device 29 comprises four piston-cylinders -Units 30, which are fastened to the support frame 18 at the ends in the x-direction in the region of the rails 2, 3.
  • the piston-cylinder units 30 can be actuated hydraulically by means of a pump that is not shown in detail.
  • the grinding unit 16 comprises damping elements 31 which are arranged between the support frame 18 and the vehicle frame 7 .
  • the damping elements 31 are designed, for example, as gas pressure dampers.
  • a control device 32 serves to control the grinding unit 16 and in particular the grinding tool drives Ai.
  • the grinding tools Wij are brought into contact with the rails 2, 3 by means of the pressing device 29.
  • the grinding tools Wij are advanced to the rails 2, 3 in the z-direction by means of the pressing device 29 or the piston-cylinder units 30 and pressed against the rails 2, 3 with a pressing force FA.
  • the contact pressure FA acts on the grinding tools Wij.
  • the contact pressure FA is in particular a force resulting from the weight of the grinding unit 16 and the piston Cylinder units 30 forces generated minus the counteracting forces generated by the spring elements 21 .
  • the grinding tools Wij are moved by means of the grinding tool drives Ai alternately or oscillating in the first rail longitudinal direction Di and the second rail longitudinal direction D relative to the support frame 18 or relative to the rails 2, 3. During grinding, the grinding tools Wij only move in a translatory or linear manner. The grinding tools Wij do not rotate during grinding.
  • the drive motors 22 of the grinding tool drives Ai are driven in rotation at an angular speed (Os), so that the grinding tools Wij are moved in an oscillating manner at a frequency fs.
  • Os angular speed
  • the grinding tool drives Ai and A2 and the grinding tool drives A3 and A4 have a symmetrical structure and a corresponding position.
  • the grinding tool drive Ai is driven in rotation in the opposite direction to the grinding tool drive A2, so that the grinding tools Wij are moved in the first rail longitudinal direction Di, whereas the grinding tools Wij are moved simultaneously in the second rail longitudinal direction D2 and vice versa.
  • the directions of rotation of the drive motors 22 are illustrated in FIG. 3 with arrows.
  • the grinding tool drives A3 and A4 are rotated in opposite directions.
  • the grinding tools Wij and W3j are moved synchronously with one another, ie simultaneously in the first rail longitudinal direction Di and in the second rail longitudinal direction D2. Accordingly, the grinding tools W2j and W4j are moved synchronously with one another, i.e. at the same time in the second rail longitudinal direction D2 or in the first rail longitudinal direction Di.
  • the control device 32 controls the grinding tool drives Ai so that the grinding tools Wij are moved in the desired manner.
  • the grinding tools Wij and W2j perform the dry grinding of the first rail 2, whereas the grinding tools W3j and W4j perform the dry grinding of the second rail 3.
  • the grinding tools Wij assigned to a respective grinding tool drive Ai define a grinding length Lw'.
  • the grinding length Lw' is illustrated in FIG.
  • the oscillating movement with the amplitude results in a dynamic grinding length Ls, where:
  • the dynamic grinding length Ls 20 cm ⁇ Ls ⁇ 120 cm, in particular 40 cm ⁇ Ls ⁇ 100 cm, and in particular 60 cm ⁇ Ls ⁇ 80 cm.
  • the maintenance vehicle 1 is moved in a direction of travel F during the grinding operation at a working speed VA.
  • the maintenance vehicle 1 is in particular moved continuously.
  • the direction of travel F corresponds to the first rail longitudinal direction Di or the second rail longitudinal direction D .
  • a point of the rails 2, 3 to be ground is machined M times by means of the grinding tools Wij.
  • the following preferably applies to the number M: 2 ⁇ M ⁇ 20, in particular 3 ⁇ M ⁇ 18, and in particular 4 ⁇ M ⁇ 16 the second rail longitudinal direction Di and vice versa.
  • the dry grinding of the rails 2, 3 can be done easily and efficiently by means of the grinding unit 16. Due to the oscillating translational or linear movement of the grinding tools Wij and/or the lack of a rotary movement of the grinding tools Wij, particles P produced by the grinding have low kinetic energy and/or low thermal energy. Such particles P are, for example, metal particles of the rails 2, 3 and/or grinding particles of the grinding tools Wij. The particles P produced by the grinding can be easily and efficiently extracted, which means that the grinding is environmentally friendly. Extraction can be carried out later using another maintenance vehicle.
  • a second exemplary embodiment of the invention is described below with reference to FIGS.
  • the grinding unit 16 includes four suction devices Si and four injection devices Bi.
  • the index i indicates the affiliation with the respective grinding tool drive Ai and the associated grinding tools Wij.
  • the respective suction device Si comprises a suction funnel 33 with a slot-shaped suction opening Si and a suction line 34.
  • the suction devices Si have a common fluid flow generator 35 and a common container 36 for collecting the extracted particles P and a common filter 37.
  • the fluid flow generator 35, the container 36 and the filter 37 are fixed to the vehicle frame 7 .
  • the suction funnels 33 are fastened to the support frame 18 in such a way that the suction openings Si on a respective outer side of the rails 2, 3 run parallel to a contact surface between the rails 2, 3 and the grinding tools Wij or to a grinding plane.
  • the suction of the particles P thus takes place transversely or perpendicularly to the first rail longitudinal direction Di or to the second rail longitudinal direction D .
  • the suction funnels 33 are arranged on the support frame 18 so that they can be adjusted in height in the z-direction.
  • the suction funnel 33 of the suction device Si is shown in FIG. 7 in a height-adjusted upper position.
  • the respective extraction line 34 opens into the common container 36, where the extracted particles P are deposited.
  • the means of the Fluidstromer The fluid flow or air flow generated by the generator 35 is filtered by the filter 37 and leaves the container 36 through a container opening 38.
  • the suction devices Si thus enable the particles P produced by the grinding to be sucked off during the grinding.
  • the respective suction opening Si defines a suction length LA in the first rail longitudinal direction Di.
  • the blowing devices Bi each comprise a blowing funnel 39 with an associated blowing opening bi and a blowing line 40.
  • the blowing devices Bi comprise a common fluid flow generator 41.
  • the fluid flow generator 41 is attached to the vehicle frame 7.
  • the blow funnels 39 are attached to the support frame 18 .
  • the respective blow line 40 connects the fluid flow generator 41 to the respective blow funnel 39, so that a fluid flow or an air flow emerges from the respective blow opening bi.
  • the respective blow opening bi runs essentially parallel to a contact surface between the rails 2, 3 and the grinding tools Wij or a grinding plane.
  • the respective blowing opening bi is arranged opposite the associated suction opening Si.
  • the fluid flow or air flow exiting through the respective blowing opening bi takes the particles P produced by the grinding with it in the direction of the associated suction opening Si.
  • the particles P blown toward each suction port Si can be easily and reliably suctioned through the suction port Si. Dry grinding is extremely environmentally friendly, as the particles P produced during grinding are easily and reliably

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un ensemble de broyage (16) pour des rails de broyage à sec (2). Ledit ensemble de broyage comprend un cadre de support (18), sur lequel est disposé au moins un outil de meulage (W11 à W23). L'au moins un outil de broyage (W11 à W23) peut être déplacé au moyen d'au moins un entraînement d'outil de meulage (A1, A2) alternativement dans une première direction longitudinale du rail (D1) et dans une seconde direction longitudinale opposée du rail (D2) par rapport au cadre de support (18). Les rails (2) peuvent être rectifiés facilement et efficacement suite au mouvement oscillant. Les particules (P) résultant du broyage présentent une faible énergie cinétique et/ou une faible énergie thermique et peuvent être simplement éliminées par aspiration.
PCT/EP2022/051260 2021-01-26 2022-01-20 Procédé et ensemble de broyage pour le broyage à sec d'au moins un rail d'une voie ferrée WO2022161853A1 (fr)

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DE102021200647.7 2021-01-26
DE102021200647.7A DE102021200647A1 (de) 2021-01-26 2021-01-26 Verfahren und Schleifaggregat zum trockenen Schleifen mindestens einer Schiene eines Gleises

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CN117161862B (zh) * 2023-11-02 2023-12-29 南通鹏能实业有限公司 一种基于金属长条制品加工的磨削装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801111A1 (de) 1977-09-07 1979-03-15 Plasser Bahnbaumasch Franz Verfahren und schienenschleiffahrzeug zum abschleifen von unregelmaessigkeiten der schienenkopfoberflaechen
EP0648895A2 (fr) * 1993-10-18 1995-04-19 Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. Machine de meulage de rails
WO2014063771A1 (fr) * 2012-10-24 2014-05-01 Franz Plasser Bahnbaumaschinen- Industriegesellschaft Mbh Procédé et dispositif de rectification de rails d'une voie ferrée
EP2886714A1 (fr) 2013-12-17 2015-06-24 Vossloh High Speed Grinding GmbH Tôle d'impact comprenant un revêtement protecteur d'un machine de meulage de rails

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966014B (zh) 2012-12-10 2014-12-03 北京二七轨道交通装备有限责任公司 轨道打磨集尘系统和打磨车
JP2017185593A (ja) 2016-04-06 2017-10-12 株式会社タカトリ ワイヤソー装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801111A1 (de) 1977-09-07 1979-03-15 Plasser Bahnbaumasch Franz Verfahren und schienenschleiffahrzeug zum abschleifen von unregelmaessigkeiten der schienenkopfoberflaechen
EP0648895A2 (fr) * 1993-10-18 1995-04-19 Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. Machine de meulage de rails
WO2014063771A1 (fr) * 2012-10-24 2014-05-01 Franz Plasser Bahnbaumaschinen- Industriegesellschaft Mbh Procédé et dispositif de rectification de rails d'une voie ferrée
EP2886714A1 (fr) 2013-12-17 2015-06-24 Vossloh High Speed Grinding GmbH Tôle d'impact comprenant un revêtement protecteur d'un machine de meulage de rails

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