Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
  • B23B5/28—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning wheels or wheel sets or cranks thereon, i.e. wheel lathes
  • B23B5/32—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning wheels or wheel sets or cranks thereon, i.e. wheel lathes for reconditioning wheel sets without removing same from the vehicle; Underfloor wheel lathes for railway vehicles

Definitions

• the invention relates to a processing machine for reprofiling wheel sets of rail vehicles in the installed state.
• the wheel set on the rail is stabilized or guided by the wheel flange.
• the wheel flange wears out, becomes sharper, and the tread pattern also changes.
• the wheel arch can become uneven, which causes noise and vibrations.
• underfloor lathes installed in shafts are known, by means of which the wheel sets installed in the vehicle can be reprofiled without dismantling.
• a processing machine is known from Hungarian patent application No. 2912/85, which was published under No. T / 48146.
• the wheel set being processed is driven by drive rollers via frictional engagement and the roller drives serve to lift the wheel set off the rail connector before processing and to replace it after processing.
• Moving the roller drives in The vertical direction is via hydraulic working cylinders.
• the wheel set is attached to the outside in the axial direction by a fastening device mounted on the machine frame.
• the rail connectors are formed by two joint brackets, which can be swiveled in a horizontal plane after the wheel set has been lifted off
• US Pat. No. 4,347,769 also discloses an underfloor processing machine in which the holding elements of the drive rollers have bearing parts on the outside, which support them in the horizontal direction
• the invention is based on the object of producing a processing machine that works by means of frictional engagement, the construction of which is simpler than that of the already known devices.
• the invention is based on the recognition that if the roller drives are designed to be displaceable in the axial direction of the wheel set, then the area under the wheel set can be are released before and after processing, whereby simpler rail connectors can be used
• the invention thus relates to a processing machine for reprofiling the wheels of wheel sets of rail vehicles, comprising rail connectors for importing the rail vehicle onto the Processing machine and for executing it, roller drives for driving the wheel set to be machined and tool holders for moving the tools machining the wheels of the driven wheel set, the roller drives being placed on a carriage each, which carriage can be moved relative to one another on a machine stand in the direction of the axis of rotation of the wheel set are bedded.
• the roller drives have two positions in the axial direction of the wheel set. During processing, the drive rollers are under the wheels of the wheelset, but before and after processing, the roller drives are shifted outwards, so the rollers are located outside the area under the wheelset.
• each roller drive is advantageously moved via a corresponding guide on the machine stand by means of a sliding device provided with a motor drive.
• each roller drive has two drive units and the brackets are arranged between the drive units.
• the horseshoe-shaped design of the roller drives and the placement of the brackets between the two arms of the horseshoe lead to a space-saving arrangement.
• each drive unit has a roller and a hydraulic motor which drives it via an axle mounted in an axle housing, the axle housing at its end falling in the direction of the hydraulic motor with a fastening bolt which enables pivoting out, but at its other end with one hydraulic lifting cylinder is provided, which lifting cylinder can be a commercially available version.
• each axle housing is provided with a side support for a support perpendicular to the axis of rotation of the roller, which side support during machining processes the horizontal component on the Rolling force absorbs It is advisable to provide each axle housing with a vertical support in the basic position, in this way the hydraulic lifting cylinders of the axle housing are not loaded in the basic position
• the brackets are each provided with a lifting device, and the tool holders, which move the machining tools for the wheels of the wheel set, are listed on the brackets.Thus, the lifting of the wheel sets from the rail connectors and after the processing of their reinsertion not on the roller drives
• the rail connectors have supporting sections which support rail sections and are movably bedded in the transverse direction relative to the longitudinal axes of the rail sections. This mobility in the transverse direction is made possible by the fact that the roller drives are already moving from the area under the wheel set during the actuation of the rail connectors withdrawn
• a movable rail connector can be designed in such a way that the support bridges of the rail connectors are embedded in the transverse direction relative to the longitudinal axes of the rail sections, and the rail connectors are each provided with a tilt cylinder
• a movable rail connector can also be designed in such a way that the support bridges of the rail connectors can be slid inwards in the transverse direction relative to the longitudinal axes of the rail sections.
• the support rails of the rail connectors are advantageously assembled with slides and embedded on guides, and the parallel displacement of the support bridges takes place via worm gears, which are driven by a bevel gear on the respective support bridge via a common axis
• each rail connector also serve to support the wheel set in the axial direction during processing.
• each rail connector is provided with a support device, which supports the wheel set during machining on the inner surface of the wheels and is mounted on the support bridge of the rail connector.
• each support device has a support lever with a support plate that can be moved in two positions in accordance with the rail bridging and support function of the rail connector, the changeover of the Support lever takes place via a gearbox by means of an electric motor
• Fig. 1 side view of an area of the operating hall
• FIG. 3 front view of an embodiment of the inventive
• the wheel set being processed being fastened in the axial direction by support devices on oblique rail connectors,
• FIG. 6 side view of the machine stand according to FIG. 5,
• FIG. 12 11 front view of the tiltable rail connector of the processing machine illustrated in FIG. 3 in the position supporting the wheel set, FIG. 12 side view of the tiltable rail connector according to FIG.
• FIG. 14 top view of the sliding rail connector according to
• FIG. 15 partial section of a wheel set support device of the processing machine illustrated in FIG. 3 with tiltable
• FIG. 16 side view of the wheel set support device according to FIG. 15, and FIG. 17 partial section of another embodiment of a
• FIGS. 1 and 2 show a processing machine according to the invention constructed in a shaft 5 made of reinforced concrete in an operating hall 1, which processing machine includes an underfloor lathe 6 and a rail connector 10.
• the track system with track axis 95 including rails 2 is guided over the operating hall 1.
• the wheelset to be machined Vehicle 3 is positioned precisely by means of a vehicle towing device 4 via the lathe 6.
• the parts of the rails 2 protruding into the shaft 5 are supported by a rail support structure 8.
• the electrical cabinet 12 belonging to the processing machine, the hydraulic feed unit 13, and the trolley 11 which serves to dispose of the chips which arise during the processing and which drives in a drift 7 in the lower region of the shaft 5.
• the processing machine according to the invention is shown in the shaft 5 in FIGS. 3 and 4.
• the lower part of the vehicle 3 was shown schematically with the wheel set 90 to be machined, which consists of wheels 92A and 92B with an axis of rotation 91 and a wheel axis 94 connecting them.
• the chip that arises during processing is disposed of by the trolley 11 traveling in the lower drift 7 of the shaft 5, and at the end of the drift 7 a trolley 14 is arranged.
• the processing machine has two rail connectors 17A, 17B for inserting and executing the wheel set 90, a machine stand 15, fastened to the bottom of the shaft 5, two roller drives 16A, 16B, fastened to the machine stand 15 and two tool holders 23A, 23B, and for axial support of the wheel set 90 during the processing two support devices 18A, 18B, attached to the rail connectors 17A and 17B.
• FIG. 3 shows that the processing machine is constructed symmetrically to the plane 96 in accordance with the two wheels 92A, 92B to be processed simultaneously.
• the corresponding parts of the two halves have been given the same reference numbers, which are supplemented with the letter "A" in the left half of FIG. 3 and the letter “B” in the right half.
• a control panel 29A belongs to the left half and a control panel 29B to the right. The further details of the processing machine are discussed below in connection with FIGS. 5 to 12, 15 and 16.
• the machine stand 15 of the processing machine illustrated in FIG. 3 is shown in three views.
• the roller drives 16A, 16B are on the upper level of the lower frame 27 of the
• the machine stand 15 is placed where it is guided over psm-shaped guides 26A, 26B.
• the movement takes place via sliding devices 24A, 24B provided with a motor drive, which are mounted on the support arms 28A, 28B fastened to the machine stand 15 to support the bearing boxes 93A, 93 B of the wheel set 90 there are two brackets 25A, 25B firmly anchored to the lower frame 27.
• Mechanical brackets 21A, 21B are installed in these brackets 25A, 25B, which raise and lower the support heads 22A, 22B to the desired height.
• the support heads 22A, 22B are self-closing Spindelant ⁇ ebe and worm gear, and actuated by locked hydraulic motors, therefore the lowering of the wheel set 90 supported with support heads 22A, 22B is completely ruled out.
• the drive chain is shown in FIG. 5 with a broken line
• the tool holders 23A, 23B which carry the machining tool, are guided on the inner sides of the brackets 25A, 25B which are directed toward one another.
• the tool holders 23A, 23B are actuated using commercially available working cylinders
• FIGS. 8 to 10 show the right roller drive 16B in three views.
• the roller drive 16B has two drive units 30B, 31B carried by the carriage 44B.
• the drive unit 30B has a roller 32B which is driven by a hydraulic motor 36B through an axle mounted on both sides in the axle housing 34B
• the drive unit 31B is designed in the same way, which has a hydraulic motor 37B, an axle housing 35B and a roller 33B.
• FIG. 10 shows that the roller drive 16B is horseshoe-shaped, hence the drive units 30B, 31B via the guide 26B next to the two Sides of the console 25B of the machine stand 15 are to be pushed in (FIG)
• the axle housings 34B, 35B can be tilted around the fastening bolt 47B.
• the tilting is carried out by lifting cylinders 40B, 41B, which spring independently and independently of one another, as a result of which the frictional engagement is uninterrupted even when the wheels 92A, 92B are worn with multiple edges and the dynamic stress is significantly reduced
• the rollers 32B, 33B via hydraulic motors 36B, 37B, no complicated gear drive is required.
• axle housings 34B, 35B, or the rollers 32B, 33B want to diverge on the "wedge effect" of the load on the wheel set 90.
• two side supports 38B, 39B are attached to the slide 44B, which absorb the horizontal force.
• Both axle housings 34B, 35B are supported in the basic position with a respective support 42B, 43B in order to relieve the lifting cylinders 40B, 41B in the basic position. In this way, when starting off, the load does not rest on the lifting cylinders 40B, 41B, but on the supports 42B, 43B.
• FIGS. 11 and 12 show the two tiltable rail connectors 17A, 17B of the processing machine according to FIG. 3.
• the upper support bridge 50B of the rail connector 17B is supported by two fixed support brackets 51B, 52B, which support brackets 51B, 52B are supported at the bottom in feet 54B, 55B.
• the feet 54B, 55B are attached to the bottom of the shaft 5.
• the tilting of the rail connector 17B is carried out by a hydraulic tilting cylinder 53B. The tilting must take place to such an extent that the rail connectors 17A, 17B, in the tilted state, neither prevent the movement of the roller drives 16A, 16B nor that of the tool holders 23A, 23B.
• the latches 19A and 20A (FIG. 4) fastened to the rail support structure 8 of the shaft 5 are mentioned, which play a role when the tiltable rail connector 17A is in the vertical position according to FIGS. 4 and 11. Since the total load of the wheel 92A falls on the tiltable rail connector 17A, therefore a separate locking against a possible tipping over is also required.
• the rail connector 17A is also supported in a vertical position by the locks 19A and 20A. Locks 19B and 20B of this type are provided for locking the rail connector 17B (FIG. 12).
• FIGS. 11, 12, 15 and 16 show two support devices 18A, 18B of the processing machine according to FIG. 3, which have the task of axially positioning the wheel set 90 during processing.
• the support device 18A is in the upper in FIGS. 3, 15 and 16 Support position, shown in Figures 11 and 12 in the non-operational lower position
• the support element of the support device 18A is a support disk 80A, which is mounted on a support lever 81A.
• the support lever 81A is fastened to an axis which extends over the support bridge 50A of the tiltable rail connector 17A, which axis engages in the gearbox 82A protrudes on the other side of the support bridge 50A.
• the transmission 82A is actuated by an electric motor 83A. The actuation is carried out by rotating in 180 ° along the axis of rotation 84A.
• the rail connector 17A performs a support task when the rail connector 17A does the job perceives the rail bridging, the support lever 81A is in the non-operational lower position
• FIGS. 13 and 14 show a displaceable rail connector 85B of another embodiment of the processing machine according to the invention.
• the support bridge 60B of the rail connector 85B can be carried out on carriages 61B, 62B on the upper level of phased guides 63B, 64B in the directions of the double arrow 86 from the illustrated rail bridging position slide against the track axis 95
• One of the threaded spindles 69B, 70B is right-handed, the other is reversible.
• the threaded spindles 69B are in operation , 70B and rotate the moving nut in the worm gears 65B, 66B, which are arranged under the moving support bridge 60B. Since the two worm gears 65B, 66B are operated simultaneously by the bevel gear mechanism 67B via a common axis 73B, the parallel movement of the support bridge 60B is administratg
• the support device 18B - similar to the tiltable rail connector 17B - is attached to the support bridge 60B
• FIG. 17 shows an embodiment of the support device 18A, which is built on the support bridge 60A of a displaceable rail connector 85A.
• This support device 18A only differs in design of the support lever 81 A from the support device 18A shown in FIGS. 15 and 16, the other parts are the same.
• the non-operating lower position of the support lever 81A is shown in FIG. 17 with a broken line.
• the wheel set 90 can be adjusted quite precisely, since the device has a hydraulic system that enables the fine adjustment.
• the wheel flange thicknesses of all wheel sets of the vehicle 3 have to be measured before machining so that it can be determined how much is to be turned from the wheel sets in accordance with the most worn wheel flange.
• the wheel set 90 is then lifted onto the lathe 6. First, the wheel set 90 is held on the bearing boxes 93A, 93B by means of the support heads 22A, 22B about 6 to 7 cm above the rail connectors 17A, 17B. The locks 19A, 20A, 19B, 20B of the rail connectors 17A, 17B are then released, and the rail connectors 17A, 17B with the tilt cylinders 53A, 53B are tilted inwards, that is to say in the direction of the track axis 95. This clears the area under the wheels 92A, 92B.
• roller drives 16A, 16B are to be pushed forward by the control of the drive motors of the pushing devices 24A, 24B until the rollers 32A, 33A, 32B, 33B are under the wheels 92A, 92B.
• the support heads 22A, 22B are lowered by means of the lifting devices 21A, 21B, and so the wheels 92A, 92B are placed on the rollers 32A, 33A, 32B, 33B.
• the wheel set 90 sits on the lathe 6 and adjusts itself exactly to its center line.
• the entire axle load rests on the rollers 32A, 33A, 32B, 33B of the roller drives 16A, 16B. There is no load on the lifting cylinders 40A, 41 A, 40B, 41 B because the axle housings 34A, 35A, 34B, 35B are in this lower one Position are supported by the supports 42A, 43A, 42B, 43B. Then the wheel set 90 can be lifted somewhat “upwards” by means of the support heads 22A, 22B. The total load then rests on the support heads 22A, 22B.
• the support levers 81A, 81B of the support devices 18A, 18B on the rail connectors 17A, 17B are to be brought into the upper position, then the support disks 80A, 80B by tilting the rail connectors 17A, 17B with the inner surfaces of the wheels 92A, 92B in Bring contact, whereby the wheel set 90 is attached in the axial direction.
• the next step is the actuation of the rollers 32A, 33A, 32B, 33B "upwards" by the lifting cylinders 40A, 41 A, 40B, 41 B.
• the pressure in the lifting cylinders 40A, 41 A, 40B, 41 B is such in the hydraulic system adjust that on the one hand the wheel set 90 remains securely on the support heads 22A, 22B, on the other hand the rollers 32A, 33A, 32B, 33B are pressed against the wheels 92A, 92B with the force required to ensure the cutting depth or for the friction drive During machining, the greater part of the axle load generally remains on the support heads 22A, 22B.
• the hydraulic circuit of the lifting cylinders 40A, 41 A, 40B, 41 B has a memory which, during machining, springs the Rollers 32A, 33A, 32B, 33B are ensured in the case of wheels of the wheel set 90 that are worn with polygonal wear. The lifting of the wheel set 90 onto the lathe 6 and its axial fastening are thus completed.
• the tool holders 23A, 23B are to be lifted and the machining tool is to be placed in the appropriate position.
• the position is set in a manner known per se by means of an instrument, not described here, which instrument also has a disk serving to measure the wheel diameter.
• the chisel can be set precisely, which is recorded by EDP and secured with CNC control.
• machining of the wheel set 90 can begin by operating the hydraulic motors 36A, 37A, 36B, 37B.
• the turning itself and the control of the chisel are regulated by the computer in a manner known per se.
• the wheel set 90 After machining, the wheel set 90 is to be measured again, then after the rail connectors 17A, 17B serving for axial support have been tipped in, the wheel set 90 is to be raised so high by means of the support heads 22A, 22B that this leads the vertical return of the rail connectors 17A, 17B Position does not bother. Before this, however, the roller drives 16A, 16B must be pulled outwards using the pushing devices 24A, 24B, so that the area under the wheels 92A, 92B is cleared. Then the support levers 81 A, 81 B of the support devices 18A, 18B are to be turned into the lower position and the tool holders 23A, 23B are lowered.
• the machined wheel set 90 is placed on the rail connectors 17A, 17B again by lowering the support heads 22A, 22B.
• the machining process is thus completed and the machining of the wheel set of the second axle can begin after the vehicle 3 has been towed by means of the vehicle towing device 4.
• the machine tool according to the invention due to its new design, enables such considerable simplifications that the execution costs, the possibility of errors and the need for maintenance are significantly lower than in the known similar devices.
• the roller drives 16A, 16B can be moved relative to one another in the direction of the axis of rotation 91 of the wheel set 90, as a result of which the bridging of the rails and the axial support of the wheel set 90 have been simplified.
• no individually manufactured hydraulics are required for moving the parts of the processing machine, but the commercially available hydraulics can be used, which further simplifies the processing machine.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Turning (AREA)
• Machines For Laying And Maintaining Railways (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=89979348

Family Applications (1)

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Cited By (5)

Citations (4)

• 2001
  • 2001-05-18 HU HU0102065A patent/HU223740B1/hu not_active IP Right Cessation
• 2002
  • 2002-05-17 WO PCT/HU2002/000043 patent/WO2002094485A2/de not_active Application Discontinuation

Patent Citations (4)

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