EP0223895B1 - Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails - Google Patents

Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails Download PDF

Info

Publication number
EP0223895B1
EP0223895B1 EP85890296A EP85890296A EP0223895B1 EP 0223895 B1 EP0223895 B1 EP 0223895B1 EP 85890296 A EP85890296 A EP 85890296A EP 85890296 A EP85890296 A EP 85890296A EP 0223895 B1 EP0223895 B1 EP 0223895B1
Authority
EP
European Patent Office
Prior art keywords
rail
bending
machine
unit
designed
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
EP85890296A
Other languages
German (de)
English (en)
Other versions
EP0223895A1 (fr
Inventor
Josef Theurer
Johann Hansmann
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.)
Franz Plasser Bahnbaumaschinen Industrie GmbH
Original Assignee
Franz Plasser Bahnbaumaschinen Industrie 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 Franz Plasser Bahnbaumaschinen Industrie GmbH filed Critical Franz Plasser Bahnbaumaschinen Industrie GmbH
Priority to EP85890296A priority Critical patent/EP0223895B1/fr
Priority to DE8585890296T priority patent/DE3565566D1/de
Priority to AT85890296T priority patent/ATE37914T1/de
Priority to SU864028318A priority patent/SU1466658A3/ru
Priority to DD86295647A priority patent/DD252404A5/de
Publication of EP0223895A1 publication Critical patent/EP0223895A1/fr
Application granted granted Critical
Publication of EP0223895B1 publication Critical patent/EP0223895B1/fr
Expired legal-status Critical Current

Links

Images

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
    • E01B31/08—Bending, e.g. for straightening rails or rail joints

Definitions

  • the invention relates to a machine arrangement for "plastically" bending up and down the ends of welded or non-welded rails in the region of the rail joints of rails laid by means of a height-adjustable bending device with a drive mechanism on a machine frame that can be moved via rail trolleys Height-adjustable support frame, which is provided with hydraulic rams which can be placed against the rail running surface and is hydraulically actuated and height-adjustable as pistons of a cylinder-piston arrangement and has gripping tools which are designed to grip the rail and can be hydraulically actuated.
  • a bending device for bending the ends of installed rails in the region of butt joints - according to AT-A-334 943 by the same applicant - is known in order to bend the rail joints, which have been reduced by the tensile load, back up to the rail level.
  • This bending device consists of a support frame guided on the track by two spaced-apart undercarriages, which can be adjusted by height adjustment drives to the machine frame of a machine that can be moved on the track.
  • a pliers-like or hook-like gripping tool is provided for gripping the rails, the height of which can be adjusted by a hydraulic cylinder-piston drive for upward bending or lifting of the rail ends.
  • a height-adjustable holding roller which can be mechanically blocked by a fixing or locking device, is arranged on both sides of the gripping tool on the supporting frame.
  • the holding rollers resting on the rail ends - together with the transducer - are raised together with the scanning element until the signal emitted by the transducer corresponds to the preset target value.
  • the entire bending process is advantageously carried out in a single operation.
  • a mobile track tamping machine with a bending device for plastic bending of the rail ends in the region of joints of rails laid is also known.
  • This consists of a support frame articulated on the machine frame and height-adjustable via a drive, at the longitudinal ends of which is arranged a pressure stamp designed as a piston of a hydraulic cylinder-piston arrangement, which can be applied to the rail travel surface and serves as an abutment.
  • a lifting hook is provided as a gripping tool, which is designed to be pivotable transversely to the longitudinal direction of the machine and is vertically adjustable in a vertical guide slot of the supporting frame for engagement.
  • a guide roller that can be unrolled on the rail head and a pair of lifting rollers on the support frame are also arranged, so that this device can also be used as a track lifting / straightening unit for lifting and straightening the track into the desired position.
  • the size of the bending moment effective in the vertical longitudinal plane of the rail can be changed individually by adjusting the height of the pressure stamp. Heavily retracted rail joints can be bent slightly up to above the rail level. This bending device has already proven itself well in use.
  • a bending device is known with three pliers-like gripping tools arranged one behind the other in the longitudinal direction of the rail for bending rails up and down. These are articulated on a first support, which is connected to a second support located underneath via two hydraulic cylinders. This second support can be supported on the rail surface by means of columnar pressure stamps. For a change from an upward to a downward bend, the two outer pressure rams have to be removed and a central pressure ram has to be installed, so that the handling of this bending device is rather cumbersome and is not suitable for high bending forces.
  • Such rail bending device are used in particular for welded rails in the area of the rail joints of laid rails, which were previously processed with mobile welding machines - for example according to AT-A-357 594 or AT-A-357 595.
  • These track construction machines which are provided with their own travel drive, for welding the two rail ends in the joint area of laid rails of a track have an elongated machine frame which is supported at the end on bogie bogies.
  • a height-adjustable preheating device, a flash butt welding unit and a welding bead shearing device arranged downstream of the welding device in the machine longitudinal direction are provided on this. With such a machine, all welding work is done in a single mission economically feasible.
  • a rail grinding vehicle - in accordance with AT-A-359 107 - in order to eliminate the irregularities on the rail running surface and the rail flank, before it is brought into an exact target position by a track leveling tamping and straightening machine.
  • a grinding vehicle which consists of two grinding tool groups arranged one behind the other in the longitudinal direction of the machine with a number of slider stones, which are set by a drive device in a reciprocating working movement in the longitudinal direction of the rail, superimposed on the vehicle's right of way.
  • a tamping machine for tamping the transverse sleepers of a track - according to AT-A-339 360 by the same applicant - is known, in which a holding device to be tamped against the desired position is provided in the area of the tamping unit above the rail.
  • This is designed as an abutment beam which extends in the longitudinal direction of the track and has three support points and which is connected to hydraulic drives in the region of its two ends.
  • Such a holding device can also be used for the treatment of downwardly bent rail ends in the region of butt joints. As a result, an intentional elevation in the area of the joint counteracts the tendency of the rail ends to bend downward due to their lower strength under load.
  • the object of the invention is to provide a machine arrangement of the type described at the outset for bending rail ends of laid rails, with which an improved and permanent rail joint height can be achieved.
  • the object of the invention is now achieved with the machine arrangement described at the outset with gripping tools designed for gripping the rail and which can be acted upon hydraulically in that three such gripping tools arranged one behind the other in the longitudinal direction of the rail are each assigned a pressure stamp, in the longitudinal direction of the rail on both sides of the one - arranged centrally and as a piston a hydraulic cylinder-piston arrangement connected to the supporting frame - pressure stamp is provided for each of the other two such hydraulic plungers serving as abutments, and that the bending device is symmetrical with respect to the longitudinal vertical plane of the rail.
  • each gripping tool is formed by two bending pliers opposite one another transversely to the longitudinal direction of the supporting frame, each bending pliers designed to engage under the rail head and pivotably mounted on the supporting frame about an axis running in the longitudinal direction of the machine with its own hydraulic Pivotal drive is connected, and preferably the end of the bending pliers or the gripping tool opposite the hook-side end is in each case in an elongated hole with a vertical longitudinal axis of a guide arm connected to the support frame is pivotally mounted.
  • the design of the gripping tools for attack directly on the rail head makes it possible to grasp the rail ends particularly quickly, regardless of the threshold distance and without any preparatory work.
  • the bilateral clamping of the rail head results in symmetrical force transmission with respect to the longitudinal vertical plane of the rails due to the opposing bending tongs in Querric.
  • the guidance of the ends of the bending pliers in an elongated hole of a guide arm attached to the support frame enables stable guidance for a wide opening of the opposing bending pliers despite the articulated mounting of the opposite end of the bending pliers on the swivel arm.
  • the contact forces exerted on the bending pliers by the swivel drives can be increased as a result of a lever effect for firm and secure pressing onto the rail head.
  • At least parts of the bending device in particular the middle pair of bending pliers, at least in the area of the contact surface with the rail head and the guide rollers adjoining on both sides and rotatably connected to the support frame about a horizontal axis, for bending up the rail ends - are coated with a highly heat-resistant and high mechanical strength metal alloy.
  • the bending tongs or guide rollers that come into contact with the red-hot glowing rail joint ensure that the up-bending process runs smoothly even when the contact pressure is high due to the very high forces.
  • the bending device for up and down bending of rail joints on a welding machine is arranged with a flash butt welding unit which has an integrated shearing device, which machine is optionally provided with a U-shape for encompassing a Rail section trained, provided with a line for the supply of water cooling tunnel is provided, and that a further bending device for up and in particular downward bending of rail joints is arranged on a tamping machine with a tamping unit and a grinding unit for grinding the rail running surface, preferably the Darning unit is subordinate.
  • the bending device arranged on the welding machine while avoiding loss of time, can advantageously be carried out immediately after the welding and welding bead shearing off the rail joint while it is still glowing from the weld, so that no residual stresses in the rail ends be introduced.
  • the tamping machine can be used to carry out the additional work required only after the welded rail ends have cooled, namely bending downwards and, in order to achieve an improved joint geometry, an exact grinding of the rail joint and tamping.
  • the tamping machine is used to achieve natural cooling of the rail joint heated by the welding only after a corresponding time interval.
  • the bending device for bending rail joints up and down is arranged on a welding machine with a flash butt welding unit having an integrated shearing device, which machine is optionally provided with a cooling tunnel, a further bending device for upward and in particular downward bending of rail joints on a mobile machine with a grinding unit for grinding the rail running surface and with a device for inserting intermediate layers between the rail and the base plate and with a screwing device.
  • This simpler machine combination is characterized in particular by the fact that a particularly simple machine can be used economically to carry out the finishing work for a precise and permanent impact position. While with the grinding unit it is possible to grind the downward curved, exaggerated rail joint, the device for inserting intermediate layers becomes highly compressed due to the original lowering of the rail joint Keep the sleeper support unchanged and correct the altitude by inserting intermediate layers.
  • the machine arrangement can also be designed in accordance with the invention in such a way that, in addition to the bending device, a cooling tunnel connected to a water tank, a warming tunnel connected to gas cylinders and a grinding unit and optionally a welding bead shearing device are provided.
  • This machine arrangement is particularly suitable for the complete treatment of already welded rail joints and is characterized by a particularly simple design. Since there are facilities for both warming up and cooling down the rail ends, they can be bent free of tension immediately after heating and bent back down after cooling with residual stresses.
  • the invention further relates to a particularly advantageous method for the plastic bending of the rails, which are connected by a fusion welded rail ends, in the region of butt joints, these rail ends possibly only being welded immediately beforehand with the aid of the bending device by supporting only two spaced-apart abutment pressure stamps on the rail running surface and grasping the centrally located welded rail joint by means of a gripping tool or a pair of bending pliers with plastic deformation to a desired height of elevation above the zero level of the rails are lifted using one of the aforementioned machine arrangements according to the invention.
  • the method is characterized according to the invention in that the rail joint is bent up in the course of the welding process while it is still glowing or, in the case of rails that have already been welded, in a heated state, preferably 300 ° C., and then the upwardly bent rail joint is cooled at least approximately to ambient temperature and subject to conditions of the pressure stamp on the rail running surface in the area of the rail joint as well as grasping the rail head on both sides by the two outer gripping tools or bending pliers arranged on both sides of the pressure stamp, down to a slight elevation back to the original zero level in the longitudinal vertical plane of the rail, whereupon the rail joint is ground down to zero level in the area of the driving surface.
  • the fatigue strength thereof is substantially improved by the fact that a plastic cold deformation in the direction of the sleepers creates pre-stresses which correspond to the direction of the load Counteract train traffic and thus prevent premature lowering of the rail joint. It is essential that the rail joint is only bent up when the rail is red-hot or when the rail ends are already welded, after a correspondingly high degree of heating, so that no residual stresses are introduced during this first bending.
  • the bent rail joint can be cooled with water to accelerate the subsequent bend towards the sleepers, whereby a largely symmetrical sprinkling prevents adverse lateral distortion.
  • a further increase in fatigue strength can be achieved by bending the rail joint downwards to a slight cant and then grinding the rail joint to the exact zero position.
  • a preferred embodiment of the method consists in that the rail joint which has already been welded but reheated at least approximately stress-free by supplying heat (for example up to 300 ° C.) - with a longitudinal distance of approximately 1.2 m between the two abutments resting on the rail running surface.
  • Printing stamp - is bent up about 10 mm by plastic deformation and, if necessary, is also aligned in the horizontal direction by lateral bending.
  • the heating of the rail ends for tension-free bending can also be used in a particularly economical manner for lateral alignment of the rail joint, so that an exact rail joint geometry is present after the bending process has ended.
  • the tension-free heated rail joint for example up to 300 ° C, can be raised by a preselected amount of cant and, with the central pressure stamp on the rail joint and applying the outer gripping tools to the rail head, cooled to approximately ambient temperature, after which the rail joint is cooled with continuous measurement of the displacement or bending value in relation to a measuring base formed by the two outer gripping tools which grip the rail head, step by step to a small, preselected amount of cant, preferably by a few A tenth of a millimeter is bent back, whereby the pressure ram is relieved between the individual bending stages - while maintaining the clamping of the rail head between the gripping tools - and the bending values are automatically reduced with increasing proximity to the preselected amount of excess depending on the measured values taken in the unloaded state.
  • FIGS. 1 to 5 an advantageous combination of such a machine arrangement or group
  • FIGS. 6 and 7 a further combination variant of such a machine arrangement demonstrate.
  • a tamping machine 1 shown in FIG. 1 can be moved on a track formed by rails 2 and concrete sleepers 3.
  • This tamping machine 1 essentially consists of a machine frame 5 supported on rail bogies 4 with a drive 6, a control device 7 and a leveling and straightening reference system 8 with a scanning roller 9.
  • a work cabin 10 is provided between two end cabins.
  • a bending device 12 is arranged for the plastic downward bending of the ends of these rails 2, which can be adjusted in height by means of a height adjustment drive 13.
  • This bending device 12, which can be unrolled or guided by guide rollers on the track, is described in more detail with reference to FIGS. 4 and 5.
  • a tamping unit 15 which is height-adjustable by means of an adjustment drive 14 with tamping tools which can be provided and vibrated by means of auxiliary drives.
  • a grinding unit 16 is also provided as the last working unit, which is connected to the machine frame 5 of the tamping machine 1 via height adjustment drives 17 and a crank drive 18.
  • sliding blocks 19 are provided which are arranged one behind the other in the longitudinal direction of the rail and can be vibrated in the longitudinal direction of the track.
  • the self-propelled machine 20 in FIG. 2 consists of a machine frame 22 supported on rail undercarriages 21 with a drive 23 and a central control device 24 arranged in a cabin. Between the two rail undercarriages 21 in a section of the machine frame 22 which is cranked upwards, one is under construction Function and the same bending device 12 arranged according to FIG. 1 and adjustable in height along a vertical guide 25.
  • a warming-up or cooling tunnel 27, 26 is arranged on both longitudinal sides of the bending device 12, which is pivotably articulated on the machine frame 22 about an axis running in the longitudinal direction of the machine and is connected to a swivel drive 28.
  • each tunnel 26, 27 is U-shaped for encompassing the rails 2 forming a rail joint 29 and has a large number of nozzles which are connected via lines 30 to a water tank 31 or gas bottles 32.
  • a valve 33 or a pump 34 is arranged in the lines 30 and is connected to the central control device 24 for remote control.
  • a welding bead shearing device 35 is arranged in front of the undercarriage 21 provided beneath the cabin, which is slidably mounted on a vertical guide 36 connected to the undercarriage 21 and is connected to a height adjustment drive 37.
  • the shearing blades 38 which can be pivoted about a vertical axis on a shaving head, can be placed against the rail 2 over the entire circumference of the rail profile and can be displaced longitudinally by two adjusting cylinders 39 arranged on both sides of the rail 2.
  • a grinding unit 40 with sliding blocks 41 arranged one behind the other in the longitudinal direction of the rail for grinding off the rail running surface.
  • the grinding unit 40 is for height adjustment connected to a pendulum drive 43 with a drive 42 and to form a reciprocating vibration working movement running in the longitudinal direction of the rail, which acts on the rail additionally or during the continuous forward movement of the machine.
  • FIG. 3 shows a welding machine 44, which is only partially shown, with a bogie chassis 45 and a drive 46.
  • a flash butt welding unit 47 can be pivoted for welding the installed rails 2 by means of a lever arm and a drive projecting out of the cabin or into it.
  • the bending device 12 shown in detail in FIGS. 4 and 5 and arranged centrally above the rail joint 29 of the rail 2 consists of a support frame 48 which extends in the longitudinal direction of the rail and which is articulatedly connected to a cantilever arm 49 which is adjustable in height on the chassis frame.
  • the supporting frame 48 consists of two mutually parallel supporting plates 51 which are connected to one another by transverse plates 50 and on which two pairs of lifting rollers 52 which can be pivoted about an axis running in the longitudinal direction of the frame are mounted with lifting plates designed for engagement under the rail head and two guide rollers 53 with a double flange.
  • abutment plungers 55 which are arranged at equal distances from one another and are height-adjustable in a hydraulic cylinder 54, the hydraulic cylinders 54 being supported on a horizontal plate connected to the two support plates 51.
  • gripping tools 56 are provided in the area of a pressure ram 55, which are formed by two bending pliers 57 lying opposite one another transversely to the longitudinal side of the supporting frame.
  • the end of the bending pliers 57 opposite the hook-side end is each pivotably mounted in an elongated hole 58 with a vertical longitudinal axis of a guide arm 59 connected to the support frame.
  • Each bending pliers 57 is articulated in the end region on the hook side via an axis 60 to a swivel arm 61 which is mounted on the cross plate 50 with its upper end so as to be pivotable about an axis running in the longitudinal direction of the frame.
  • each bending pliers 57 is connected to its own pivoting drive 62, which is articulated on the support frame 48 via a support arm 63.
  • the pivot drives 62 are not shown in FIG. 4 for the sake of a better overview.
  • a measuring device 64 measuring the deformation or bending path is provided, which consists of two height-adjustable buttons 65 on the support frame 48 on both sides of the middle pair of gripping tools 56 and one button - arranged on the end with two buttons 56 in the area of the outer pair of gripping tools connected - measuring bar 66 is formed. These two outer buttons lie on a support part 67 connected to the outer pressure rams 55, the two inner buttons 65 lie directly on the rail travel surface (FIG. 5).
  • each of the two outer buttons in the transverse direction are assigned additional buttons for resting on the support part 67.
  • a height-adjustable displacement transducer 68 with an electrical displacement transducer is provided, which is connected with its lower end region to the associated buttons 65 and abuts the measuring beam 66 with its upper end.
  • the support frame 48 with the plungers 55 and the bending pliers 57 is symmetrical with respect to the longitudinal vertical plane 69 of the rails.
  • a welding machine 70 shown in FIG. 6 essentially consists of a machine frame 71 with bogie undercarriages arranged at the ends, an energy supply center, a generator and a travel drive 72. All drives can be remotely controlled from a central control device.
  • the welding machine 70 can be moved on a track formed from rails 73 and transverse sleepers 74 made of wood. With 75 a rail joint is designated.
  • a flash-butt welding unit 76 with an integrated weld bead shearing device 77 is arranged in a section of the machine frame 71 which is designed to be cranked upwards, the welding unit 76 being designed to be height-adjustable via a drive.
  • the bending device 12 already described in more detail in FIGS.
  • This bending device 12 differs slightly from the bending device described in detail in FIGS. 4 and 5 in that the middle pair of bending pliers 57 in the lower end region and the guide rollers 53 have a highly heat-resistant coating 79 in the form of a metal alloy.
  • a U-shaped cooling tunnel 80 designed to enclose the rail 73, which is connected to the machine frame in a height-adjustable manner by drives.
  • This cooling tunnel 80 is connected to a water tank 82 via a line and a pump 81.
  • FIG. 7 shows a further machine 83 which can be moved on the track and has a machine frame 84 which is supported on rail bogies and on which a travel drive 85 and a leveling and straightening reference system 86 are provided.
  • the machine 83 can be moved on a track formed by rails 87 and transverse sleepers 88, intermediate layers 89 for rail leveling being arranged between the sleepers 88 and the rail 87.
  • a screw device 90 is also provided for loosening or fixing the rail fastening screws, and a height-adjustable grinding unit 91 equipped with vibratable slide stones is connected to the machine frame 84 with a crank drive 92.
  • a device 93 is also provided for inserting intermediate layers 89 between rail 87 and the base plate lying on the threshold.
  • This device 93 which is height-adjustable by a drive 94, has two pairs of lifting rollers arranged on a tool frame for gripping the rail head and a pivoting device 95 which can be rotated about a vertical axis by a crank drive.
  • a support shoe is provided for supporting the intermediate layers 89, which can be displaced from the support shoe in the machine or rail longitudinal direction by a pressure plate 96 connected to a drive.
  • a highly schematically illustrated bending device 12 Arranged on the projecting section of the machine frame 84 is a highly schematically illustrated bending device 12, in particular designed for plastic downward bending, which is essentially identical in construction and function to the bending devices already described, in particular according to FIGS. 5 and 6, and which is connected to the machine frame 84 in a height-adjustable manner by a drive.
  • the first step is carried out by the welding machine 44 (FIG. 3) in that the rail ends are welded to one another in the region of the rail joint 29 while the welding unit 47 is being extended and lowered.
  • the further machine 20 is moved to the rail joint 29 in the working direction indicated by an arrow, and the welding bead formed by the welding is cut off by lowering the shearing device 35 and applying the cutting knife 38 to the rail 2.
  • the bending device 12 becomes centered above the rail joint (FIG. 2) and, when the gripping tools 56 and lifting rollers 52 are spread apart, lowered onto the rail 2 until the guide rollers 53 rest thereon.
  • the pivoting drives 62 of the two middle bending pliers 57 are actuated in such a way that they are pressed against the rail 2 below the rail head.
  • the other two pairs of bending pliers remain spread apart.
  • the two outer abutment plungers 55 are pressed against the running surface of the rail 2 by actuating the hydraulic cylinder 54. This results in a lifting of the entire bending device 12 and an upward bending of the rail joint 29 detected by the central bending pliers 57 (FIGS. 4 and 5).
  • This bending process takes place in the state of the rail joint 29 still heated by the welding process, so that the entire upward bend is largely stress-free.
  • the bending path is expediently about 10 mm.
  • the heated rail ends are cooled down symmetrically by pivoting the cooling tunnel 26 into the position shown in FIG. 2 by spraying water onto both longitudinal sides of the rail.
  • the cooling can also take place through the ambient air, however, a longer period of time is required.
  • the next work step is carried out by the tamping machine 1, in that it is moved with its bending device 12 over the tension-free bent rail joint 29 (FIG. 1).
  • the pairs of bending pliers 57 arranged at the end in the longitudinal direction of the machine are pressed against the rail head, while the bending pliers 57 of the middle pair of bending pliers remain spread apart, ie are not in engagement with the rail 2.
  • the middle pressure stamp 55 in the area of the rail joint 29 is lowered onto the running surface of the rail 2, there is a downward bending of the rail joint 29 with the formation of residual stresses.
  • This downward bending advantageously takes place gradually, between the Pressure relief is carried out for each bending step in order to be able to determine and measure the actual plastic bending path after the elastic part of the bending has been eliminated.
  • the bending path becomes smaller as the approach to the zero level of the rail 2 increases, in order to avoid overbending.
  • the downward bend is completed as soon as a slight elevation of a few tenths of a millimeter above the zero level of the rail 2 is reached. Then the tamping machine 1 is moved in the direction shown by the arrow 11 until the Stuffing unit 15 is centered over the rail joint 29.
  • the rail joint 29 which is a few tenths of a millimeter higher, is ground off by the grinding unit 16 is the treatment of the rail joint 29 to increase the fatigue strength and to create an exact rail joint geometry and an accurate and durable sleeper support in the region of the rail joint 29.
  • the welding bead formed in this process is immediately cut off with the aid of the integrated shearing device 77. Subsequently, the rail joint is bent up by the bending device 12 and by lowering the cooling tunnel 80 via the rail ends welded to one another (FIG. 6) and a corresponding supply of water from the water tank 82, an accelerated cooling. This process can also be omitted, however, by the required Cooling by a later use of the machine 83 takes place naturally with the help of the ambient air.
  • the machine 83 is moved in the direction indicated by the arrow to the rail joint and, with the aid of the projecting bending device 12, it is bent downward to a slight elevation in the manner described. This slight elevation is then ground off with the help of the grinding unit 91, so that an exact zero position of the rail joint 75 is reached.
  • one or more intermediate layers 89 are inserted in the area of the rail joint 75 between the rail and the base plate instead of a tamping.
  • the required number of intermediate layers 89 is placed on the support shoe of the device 93 and the pivoting device 95 is pivoted inward in the direction indicated by a dashed arrow by means of the crank drive, so that the intermediate layers are pressed with the aid of the pressure plate 96 connected to a cylinder 89 can be inserted between the rail and the base plate.
  • the track is held in the desired height position with the aid of the lifting roller pairs arranged on the device 93 and the associated leveling-leveling reference system 86.
  • the rail fastening means are fastened with the aid of the screwing device 90.
  • the bent rail joint is bent downwards with the aid of the bending device arranged on the tamping machine 1 12.
  • the treated rail joint is then immediately stuffed and ground exactly to the zero level of the rails with the aid of the grinding unit 16
  • the first work step is to warm up the rail ends by pivoting the warm-up tunnel 27 of the machine 20 over the rail joint 29.
  • the rail joint 29 is preferably heated to approximately 300 ° C.
  • the heated rail ends are then bent up by lowering the bending device 12 of the machine 20 onto the rail 2.
  • the cooling tunnel 26 can be used for immediate cooling. However, this can also - as already mentioned - take place naturally through a later use of the tamping machine 1
  • the bent rail joint 29 has cooled approximately to ambient temperature, it is bent down with the aid of the bending device 12 arranged on the tamping machine 1 and then by the Stuffing unit 15 supports. The remaining slight excess is ground down again by the grinding unit 16 arranged at the end.
  • This machine arrangement differs from that mentioned in section D in that instead of the tamping machine 1, the machine 83 according to FIG. 7 is used to introduce intermediate layers 94.
  • the subsequent upward bend and the subsequent cooling of the heated rail joint 29, the plastic bending downward can advantageously also be carried out by the same bending device 12.
  • the remaining slight excess is then ground off with the aid of the grinding unit 40 arranged at the end.
  • the sleepers 3 arranged in the region of the rail joint 29 are only tamped for. B. as part of an already planned track work.

Landscapes

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

Claims (10)

1. Dispositif pour la flexion "plastique" vers le haut ou vers le bas des bouts de rail de rails respectivement soudés ou non soudés, dans la zone des éclissages (29) des rails sur des voies posées, au moyen d'un dispositif de flexion (12) qui est installé avec faculté de réglage en hauteur sur un bâti de machine mobile par l'intermédiaire de bogies, et qui présente un cadre de support (48) réglable en hauteur par l'intermédiaire d'un entraînement, équipé de patins de pression (55) pouvant être appliqués contre la surface de roulement des rails, réglables en hauteur, sollicitables hydrauliquement et réalisés en tant que pistons d'un groupe de vérins, ce cadre étant muni d'outils de préhension (56) qui sont conçus pour saisir le rail (2) et peuvent être sollicités hydrauliquement, caractérisé par le fait qu'un patin de pression respectif (55) est associé à trois outils de préhension (56) de ce type se succédant dans le sens longitudinal des rails, dispositif dans lequel, dans le sens longitudinal des rails et de part et d'autre de l'un des patins de pression (55) - disposé centralement et réalisé sous la forme du piston d'un vérin hydraulique relié au cadre de support (48) -, se trouve l'un respectif des deux autres patins de pression (55) de ce type, sollicitable hydrauliquement et servant de contrebutée; et par le fait que le dispositif de flexion (12) est de réalisation symétrique par rapport au plan vertical longitudinal (69) des rails.
2. Dispositif selon la revendication 1, caractérisé par le fait que chaque outil de préhension (56) est formé par deux pinces de flexion (57) se faisant mutuellement face transversalement par rapport à la direction longitudinale du cadre de support, chaque pince de flexion (57), conçue pour venir en prise au-dessous du champignon de rail et montée pivotante, sur le cadre de support (48), autour d'un axe s'étendant dans le sens longitudinal de la machine, étant reliée à un propre entraînement hydraulique en pivotement (62), dispositif dans lequel, de préférence, l'extrémité respective de la pince de flexion ou de l'outil de préhension (56, 57), opposée à l'extrémité située côté crochet, est à chaque fois montée pivotante dans un trou oblong (58), à axe longitudinal vertical, d'un bras de guidage relié au cadre de support (48).
3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait qu'un galet de guidage (53) à double flasque et une paire de galets de levage (52), associée à l'entrainement (13) de réglage en hauteur, pouvant être positionnée transversalement par rapport à la direction longitudinale du cadre et destinée à venir en prise au-dessous du champignon de rail, sont respectivement intercalés, sur le cadre de support (48), entre une paire (56, 55) d'outils de préhension et de patins de pression mutuellement distants dans le sens longitudinal de ce cadre de support.
4. Dispositif selon l'une des revendications 1, 2 ou 3, caractérisé par le fait qu'au moins des parties du dispositif de flexion (12), en particulier la paire centrale de pinces de flexion (57), sont revêtues d'un alliage métallique à haute résistance à la chaleur, au moins dans la région de la surface de contact avec le champignon de rail, et les galets de guidage (53) attenants de part et d'autre et reliés de manière rotative au cadre de support (48) autour d'un axe horizontal - afin de fléchir vers le haut les bouts des rails - sont revêtus d'un alliage métallique présentant une grande robustesse mécanique.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que le dispositif de flexion, destiné à fléchir des joints de rails vers le haut et vers le bas, est implanté sur une machine de soudage (70) équipée d'un groupe (76) de soudage par étincelage bout à bout muni d'un dispositif de cisaillement intégré (77), ladite machine étant êventuellement pourvue d'un tunnel de refroidissement (80) qui est réalisé de configuration en U afin d'emprisonner un tronçon de rail, et qui est raccordé à un conduit de délivrance d'eau; et par le fait qu'un autre dispositif de flexion (12), destiné à fléchir vers le haut et notamment vers le bas des joints de rails, est implanté sur une machine de bourrage (1) comprenant un groupe de bourrage (15) et un groupe de meulage (16) pour rectifier par meulage la surface de roulement des rails, et se trouve de préférence en aval du groupe de bourrage (figures 6, 1).
6. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que le dispositif de flexion (12), destiné à fléchir des joints de rails vers le haut et vers le bas, est implanté sur une machine de soudage (70) équipée d'un groupe (76) de soudage par étincelage bout à bout muni d'un dispositif de cisaillement intégré (77), ladite machine étant éventuellement pourvue d'un tunnel de refroidissement (80); et par le fait qu un autre dispositif de flexion (12), destiné à fléchir vers le haut et notamment vers le bas des joints de rails, est implanté sur une machine mobile (83) qui comprend un groupe de meulage pour rectifier la surface de roulement des rails, un dispositif (93) pour introduire des couches intercalaires entre le rail et la plaque d'appui sous-jacente, ainsi qu'un dispositif de vissage (90) (figures 6, 7).
7. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait qu'un tunnel de refroidissement (26) en communication avec un réservoir d'eau (31), un tunnel de chauffage (27) relié à des bouteilles de gaz, un groupe de meulage (40) ainsi qu'éventuellement un dispositif (35) de sectionnement des bourrelets de soudage, sont prévus en plus du dispositif de flexion (12) (figure 2).
8. Procédé pour la flexion plastique des bouts, solidarisés par soudage, de rails posés dans la zone des éclissages des rails, ces bouts de rails, venant éventuellement juste d'être soudés, étant soulevés par déformation plastique jusqu'à une cote de rehaussement souhaitée au-dessus du niveau zéro des rails, à l'aide du dispositif de flexion, par venue en contact, sur la surface de roulement des rails, de seulement deux patins de pression formant des contrebutées et espacés l'un de l'autre, et par saisie, respectivement au moyen d'un outil de préhension ou d'une paire de pinces de flexion, du joint de rails soudé et occupant une position centrale entre ces derniers, en utilisant un dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que le joint de rails est fléchi vers le haut au cours du processus de soudage, respectivement à l'état encore incandescent ou en condition chauffée, de préférence à 300° C, lorsque les rails sont déjà soudés, après quoi ce joint de rails fléchi vers le haut est refroidi au moins approximativement jusqu'à la température ambiante pour être ensuite, par venue en contact du patin de pression sur la surface de roulement des rails au voisinage du joint de rails, ainsi que par saisie du champignon de rail de part et d'autre, par les deux outils de préhension ou pinces de flexion situés de part et d'autre à l'extérieur du patin de pression, à nouveau fléchi vers le bas jusqu'à un rehaussement plus faible, au niveau zéro initial dans le plan vertical longitudinal des rails, après quoi le joint des rails est rectifié par meulage de manière précise jusqu'au niveau zéro, au voisinage de la surface de roulement.
9. Procédé selon l'une des revendications 1 à 8, caractérisé par le fait que le joint de rails déjà soudé, mais de nouveau chauffé par apport de chaleur (par exemple jusqu'à 300° C), au moins approximativement sans tensions, - en presence d'un espacement longitudinal d'environ 1,2 m entre les deux patins de pression formant des contre-butées et appliqués sur la surface de roulement des rails - est fléchi d'environ 10 mm vers le haut par déformation plastique et est également, le cas échéant, additionnellement orienté dans le sens horizontal par flexion latérale.
10. Procédé selon l'une des revendications 8 ou 9, caractérisé par le fait que le joint de rails, fléchi vers le haut pour l'essentiel sans tensions et d'une cote de rehaussement présélectionnée, est refroidi approximativement jusqu'à la température ambiante par venue en contact du patin de pression central sur ce joint de rails et par application des outils de préhension externes contre le champignon de rail, après quoi le joint de rails est progressivement soumis à une flexion antagoniste jusqu'à une faible cote de rehaussement présélectionnée, représentant de préférence un nombre restreint de dixièmes de millimètre, avec mesure continue respective de la course de coulissement ou de la valeur de la flexion par rapport à une base de mesure formée par les deux outils de préhension externes en prise avec le champignon de rail, procédé dans lequel, entre les étapes individuel les de flexion - tout en maintenant l'enserrement du champignon de rail entre les outils de préhension -, il s'opère un soulagement du patin de pression considéré, et les valeurs de flexion sont automatiquement diminuées au fur et à mesure qu'on se rapproche de la cote de rehaussement présélectionnée, en fonction des valeurs mesurées captées en condition soulagée.
EP85890296A 1985-11-28 1985-11-28 Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails Expired EP0223895B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP85890296A EP0223895B1 (fr) 1985-11-28 1985-11-28 Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails
DE8585890296T DE3565566D1 (en) 1985-11-28 1985-11-28 Device for the plastic bending of rail ends in the region of rail joints
AT85890296T ATE37914T1 (de) 1985-11-28 1985-11-28 Maschinenanordnung zum plastischen biegen der schienenenden im bereich der schienenstoesse verlegter gleise.
SU864028318A SU1466658A3 (ru) 1985-11-28 1986-10-20 Способ пластической гибки уложенных в пути рельсов в области сваренного стыка и установка дл его осуществлени
DD86295647A DD252404A5 (de) 1985-11-28 1986-10-28 Maschinenanordnung und verfahren zum plastischen biegen der enden von verschweissten bzw. nichtverschweissten schienen im bereich der schienenstoesse verlegter gleise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85890296A EP0223895B1 (fr) 1985-11-28 1985-11-28 Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails

Publications (2)

Publication Number Publication Date
EP0223895A1 EP0223895A1 (fr) 1987-06-03
EP0223895B1 true EP0223895B1 (fr) 1988-10-12

Family

ID=8194758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890296A Expired EP0223895B1 (fr) 1985-11-28 1985-11-28 Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails

Country Status (5)

Country Link
EP (1) EP0223895B1 (fr)
AT (1) ATE37914T1 (fr)
DD (1) DD252404A5 (fr)
DE (1) DE3565566D1 (fr)
SU (1) SU1466658A3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201445B (en) * 1987-02-27 1991-01-02 Plasser Bahnbaumasch Franz A travelling track maintenance machine, more especially a tamping, lifting and lining machine for switches and crossings
AT17690U1 (de) * 2021-02-10 2022-11-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Gleisgebundene Instandhaltungsmaschine und Verfahren zum Betreiben der Maschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191225970A (en) * 1911-11-16 1913-09-25 John Noll Improvements in Apparatus for Securing in Place or Removing the Wearing Portions of Compound Tram or like Rails.
US2135107A (en) * 1935-12-23 1938-11-01 Charles A Miller Apparatus for reforming rail ends
US3451470A (en) * 1967-03-28 1969-06-24 New York Central Railroad Co T Rail temperature regulating apparatus
AT348569B (de) * 1976-12-23 1979-02-26 Plasser Bahnbaumasch Franz Fahrbare gleisbearbeitungsmaschine
EP0127935B1 (fr) * 1983-04-23 1987-01-21 The Permanent Way Equipment Company Limited Procédé et appareil de cintrage et de redressage

Also Published As

Publication number Publication date
DD252404A5 (de) 1987-12-16
EP0223895A1 (fr) 1987-06-03
SU1466658A3 (ru) 1989-03-15
ATE37914T1 (de) 1988-10-15
DE3565566D1 (en) 1988-11-17

Similar Documents

Publication Publication Date Title
DE2840916C2 (fr)
DE2928474C2 (fr)
DE69605551T2 (de) Verfahren zum Schweissen mindestens eines Schienenstranges und Maschine zur Anwendung dieses Verfahrens
AT391502B (de) Fahrbare gleisstopf-, hebe- und richtmaschine zum heben und bzw. oder seitwaertsverschieben eines gleises im weichen- und kreuzungsbereich
EP0726360B1 (fr) Procédé et machine pour le bourrage et l'assainissement d'une voie ferrée
EP0314854B1 (fr) Machine de bourrage, de nivellement et de dressage de voie ferrée pour le nivellement et/ou le déplacement latéral d'une voie ferrée dans la zone d'une aiguille et d'un croisement
DE3106754C2 (de) Fahrbare Gleisbaumaschine mit Werkzeugträger für Hebe- und Richtwerkzeuge
CH682681A5 (de) Zieh-Vorrichtung zum Längsverschieben von Schienen.
EP0205723B1 (fr) Dispositif mobile pour le traitement des voies ferrées et méthode de pliage des extrémités des vails posés dans la zone des joints
DE3015283A1 (de) Verfahren und gleisfahrbare maschine zum entfernen von unregelmaessigkeiten an der schienenkopfoberflaeche verlegter gleise
EP0342306B1 (fr) Machine pour ripage latéral d'une voie constituée de rails et de traverses transversales
DE2718859C2 (fr)
AT403812B (de) Maschine zum anpressen von schwellenankern
CH665860A5 (de) Fahrbare gleisstopf-nivellier- und richtmaschine.
DE1708651C3 (de) Verfahren und Vorrichtung zum seitlichen Ausrichten von Gleisen
DE2633605C2 (de) Einrichtung zum Verlegen von Querschwellen eines Gleises
EP1682304B1 (fr) Procede pour souder deux rails d'une voie ferree
EP0326794B1 (fr) Procédé pour souder électriquement bout à bout les deux extrémités en contact mutuel dans le domaine de l'intervalle de voie d'une voie posée
EP0223895B1 (fr) Dispositif pour la flexion plastique des bouts de rail dans la zone des éclissages des rails
EP0326793B1 (fr) Machine pour souder électriquement bout à bout les deux extrémités en contact mutuel dans l'intervalle de voie d'une voie posée
AT525020B1 (de) Stopfmaschine zum Verdichten der Schotterbettung eines Gleises
AT390288B (de) Einrichtung und verfahren zur lagekorrektur eines auf einem laengs-betonband eingiessbaren gleisgerippes
DE2624416C2 (de) Fahrbare Gleisstopfmaschine zum Unterstopfen der Querschwellen eines Gleises
AT391335B (de) Gleisstopfmaschine
DE3814733C2 (de) Gleisstopfmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19861006

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB SE

17Q First examination report despatched

Effective date: 19871029

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB SE

REF Corresponds to:

Ref document number: 37914

Country of ref document: AT

Date of ref document: 19881015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3565566

Country of ref document: DE

Date of ref document: 19881117

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19941109

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19941116

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19941118

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19941129

Year of fee payment: 10

EAL Se: european patent in force in sweden

Ref document number: 85890296.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19951018

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19951128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19951129

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19951128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960801

EUG Se: european patent has lapsed

Ref document number: 85890296.8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19961128