WO2025003092A1 - Verfahren und gleisbaumaschine zum unterstopfen von schwellen eines gleises - Google Patents
Verfahren und gleisbaumaschine zum unterstopfen von schwellen eines gleises Download PDFInfo
- Publication number
- WO2025003092A1 WO2025003092A1 PCT/EP2024/067739 EP2024067739W WO2025003092A1 WO 2025003092 A1 WO2025003092 A1 WO 2025003092A1 EP 2024067739 W EP2024067739 W EP 2024067739W WO 2025003092 A1 WO2025003092 A1 WO 2025003092A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tamping
- ballast bed
- pressure
- track
- variable
- 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.)
- Ceased
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
- E01B27/13—Packing sleepers, with or without concurrent work on the track
- E01B27/16—Sleeper-tamping machines
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
- E01B27/13—Packing sleepers, with or without concurrent work on the track
- E01B27/16—Sleeper-tamping machines
- E01B27/17—Sleeper-tamping machines combined with means for lifting, levelling or slewing the track
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B35/00—Applications of measuring apparatus or devices for track-building purposes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/12—Tamping devices
Definitions
- the invention relates to a method for tamping sleepers of a track using a tamping unit, the tamping tools of which are immersed in a ballast bed and placed next to each other, whereby the nature of the ballast bed is determined.
- the invention also relates to a corresponding system for carrying out the method.
- a generic method is known from AT 520698 A1.
- a sensor is used to record the load on the tamping unit in addition to determining the condition of a ballast bed. Specifically, a penetration force is determined during the penetration process of a tamping tool into a ballast bed. A load-time curve derived from this forms the basis for evaluating the ballast condition.
- a tamping tool is also used to immerse it in order to draw conclusions about the condition of a ballast bed. This involves a controlled lowering movement of the tamping tools, with at least one variable processed in the control loop being fed to an evaluation device to derive a characteristic variable for the ballast bed.
- AT 520056 A1 discloses another method for determining the condition of a ballast bed. This involves recording the force transmitted to the track ballast due to a horizontal vibration movement of tamping tools in order to draw conclusions about the condition of the ballast bed.
- AT 521798 A1 discloses a method for determining the condition of a ballast bed using a working unit for ballast compaction, wherein the working unit comprises an electric drive.
- a ballast bed characteristic is derived from at least one operating variable of the electric drive using an evaluation device.
- the invention is based on the object of enabling improved operation of the tamping unit on the basis of the method of the type mentioned at the outset. It is also an object of the invention to provide a correspondingly improved system for tamping sleepers on a track.
- a setting value for a supply pressure for applying the supply cylinders of the tamping unit is automatically specified.
- the supply pressure is an important value in asynchronous constant pressure tamping, in which tamping tools located opposite one another are tamped with the same pressure in relation to a sleeper to be tamped. The same pressure is achieved by jointly activating the supply cylinders assigned to the tamping tools.
- the specified setting time and the set setting pressure are important variables for influencing the compaction quality of the ballast.
- the current condition of the ballast bed is of key importance here.
- the information on the condition of the ballast bed can in particular contain information on a grain size, a fine fraction, a degree of compaction, a degree of contamination, in particular a degree of vegetation, and/or a ballast bed stiffness.
- the condition can also include information on a layer thickness of the track ballast, in particular on a filling height relative to the underside of a track sleeper.
- the nature of the ballast bed is understood to mean at least one property that is crucial for the operation of the track.
- the properties that are particularly important are those that affect the load-bearing capacity, the rigidity and/or the damping properties of the ballast bed.
- the spectrum here extends from a relatively loose ballast bed at the start of track construction (new track, soft ballast bed) to a heavily contaminated and compact ballast bed towards the end of a maintenance period (hard ballast bed). In the latter case, a significantly higher setting pressure is required in order to move ballast grains into a new, compacted structure during a setting process.
- the method according to the invention automatically sets the auxiliary pressure depending on the The properties of the ballast bed are determined prior to the tamping tool being used. This makes it possible to adapt the tamping pressure to the conditions of the ballast bed during each tamping process.
- the adjustment is in a range of 8 MPa to 12 MPa (80-120 bar), which generally results in a tamping force of 3 kN to 12 kN at the free end of the respective tamping tool (pick plate).
- the automatic setting of the supply pressure depending on the ballast bed condition ensures a consistent tamping quality.
- the risk of sleeper displacement is eliminated.
- the demands placed on an operator are reduced.
- the automatic supply pressure according to the invention subsequently forms a subsystem of a track construction machine that operates partially or completely autonomously.
- the setting value of the auxiliary pressure is specified as a proportion of the available system pressure of a hydraulic system coupled to the tamping unit.
- Pressure chambers of the auxiliary cylinders are connected to the hydraulic system via servo or proportional valves.
- a pressure reduction in a rod-side pressure chamber leads to the execution of an auxiliary movement.
- a pressure reduction in a piston-side pressure chamber causes a return movement of the auxiliary cylinder.
- the rod-side pressure chamber is switched to almost pressureless so that the entire system pressure in the piston-side pressure chamber is present as auxiliary pressure.
- the setting value is 100% of the system pressure.
- the servo or proportional valves are used to The piston-side pressure chamber and/or the rod-side pressure chamber are subjected to reduced system pressure.
- the current auxiliary pressure results from the pressure differences in the two pressure chambers, taking into account the ratio of the piston area to the ring area of the respective auxiliary cylinder.
- the setting value is advantageously displayed in an output device. This gives an operator the opportunity to monitor the specification and make adjustments if necessary. For example, the setting value is further reduced during a new laying if only a minimal track lift is planned at the current track location during the tamping process. In addition, the setting value is logged for each tamping process so that the tamping results can be traced later.
- the setting value initially specified on the basis of the ballast bed condition is automatically adjusted depending on a lifting value and/or a tamping time and/or a number of tamping cycles. This further increases the level of automation.
- the setting value is adjusted so that with each tamping process, enough ballast is pushed into a cavity created by the lifting process under the respective sleeper.
- the vibrating tamping tools cause the ballast pushed under the sleeper to be compacted.
- the tamping process should be completed as soon as the optimum compaction of the ballast is achieved.
- the relationship between a determined ballast condition, the tamping pressure and the tamping time as well as the lifting value is preferably determined before setting up the automatic
- the tamping pressure specification for each tamping unit type is determined empirically. If optimum compaction cannot be achieved with one tamping process, another tamping cycle is carried out at the same track location. In such a case, the number of tamping cycles is also taken into account when specifying the setting value.
- a control method is preferred in which the setting variable is fed to a control device of the tamping unit, the auxiliary cylinders being controlled by the control device in accordance with the setting variable.
- the auxiliary cylinders being controlled by the control device in accordance with the setting variable.
- servo or proportional valves are controlled, by means of which the auxiliary cylinders are connected to a hydraulic system.
- a control in which the tamping pressure is automatically adjusted during a tamping process depending on a detected movement variable of the tamping tool and/or a reaction force acting on the tamping tool.
- This optimized method ensures that the tamping pressure specified with the setting variable leads to the desired tamping effect in the ballast bed. For example, the tamping pressure is increased if a localized clumping of the ballast under a threshold slows down the tamping movement.
- the tamping speed and/or the maximum dynamic reaction force are recorded during the tamping process.
- the latter occurs as a result of a vibration movement that is superimposed on the positioning movement.
- the dynamic reaction force is greatest when the direction of vibration coincides with the positioning direction. Following this compaction phase, during a vibration cycle to a relief phase with a vibration direction opposite to the setting direction.
- a measurement value correlating with a penetration force is recorded to determine the condition of the ballast bed during an immersion process of the tamping tools into the ballast bed, the setting value for the additional pressure being derived from the measurement value.
- the condition of the ballast bed is recorded by a measurement process during the immersion of the tamping tools into the ballast bed.
- the automatic additional pressure setting reacts immediately to suddenly changing conditions of the ballast bed.
- a preferred parameter for ballast categorization is the determined penetration force of the tamping tools. This is calculated from the resulting force of a sinking cylinder, by means of which the tamping tools are immersed in the ballast bed.
- the decisive factors here are a sinking pressure, a counterpressure, a piston area and an annular area of the sinking cylinder. Furthermore, a change in momentum resulting from the acceleration and the mass of the lowered components of the tamping unit must be taken into account.
- an average, a weighted or a maximum sinking force can be determined from a penetration force curve.
- the ballast bed is categorised based on the recorded results (e.g. low penetration force, medium penetration force, high penetration force).
- a quality index can correlate with an energy that is required to move at least one of the tamping tools, in particular to the maximum penetration depth, into the ballast bed.
- the penetration energy can be determined as the integral of a vertical driving force acting on the at least one tamping tool over the path, in particular the vertical path, that the tamping tool travels in the ballast bed.
- a particularly meaningful quality index results from the quotient of the penetration energy and a maximum penetration depth. The resulting quality index is thus largely independent of the respective penetration depth of the tamping tools.
- the pressure curve of the lowering pressure and a measured trajectory of the lowering movement of the lowered unit components - essentially a tool carrier with the tamping tools and the tool drives - are used to automatically specify the supply pressure.
- the system according to the invention for tamping sleepers of a track comprises a tamping unit with tamping tools that can be immersed in a ballast bed and positioned relative to one another, and is designed to determine the nature of the ballast bed, wherein a parameter for the nature of the ballast bed is fed to an evaluation device for deriving a setting value for a tamping pressure for applying tamping cylinders of the tamping unit.
- a categorization of the ballast bed recorded in the system is used to automatically set the tamping pressure. This increases process reliability and relieves the workload of an operator of the tamping unit.
- Fig. 1 System with a train travelling on a track
- Fig. 2 Tamping unit of the track construction machine
- Fig. 3 Hydraulic circuit diagram for controlling an auxiliary cylinder of the tamping unit.
- the system 1 shown in Fig. 1 comprises a track construction machine 2 for tamping a track 3.
- the track construction machine 2 is designed as a cyclically operating tamping machine with a machine frame 5 supported on rail carriages 4, on which a tamping unit 6 and a lifting and straightening unit 8 in front of it in a working direction 7 are arranged.
- Any other track construction machine 2 equipped with a tamping unit 6 can also be used to carry out the method according to the invention.
- the invention relates to a tamping process in which a track grid formed from sleepers 9 and rails 10 fastened thereto is fixed by means of the tamping unit 6 in a position raised from a ballast bed 11 and possibly directed sideways. Fixing is carried out by first dipping tamping tools 12 arranged on the tamping unit 6 into the ballast bed 11 on both sides of the sleeper 9 currently to be tamped. By means of a subsequent positioning movement 13, ballast grains are pushed under the sleeper 9 and compacted. A vibration movement 14 of the tamping tools 12 during dipping and positioning facilitates the displacement of the ballast grains.
- a higher vibration frequency e.g. 45 Hz
- the positioning process e.g. 35 Hz.
- the opposing tamping tools 12 are designed as swing levers and are mounted on a common tool carrier 15 (Fig. 2). Upper lever arms of the tamping tools 12 are connected to a vibration drive 17 via auxiliary cylinders 16.
- the vibration movement 14 is generated by the auxiliary cylinders 16 by hydraulic fluid being pumped into the Vibration frequency is moved back and forth between a piston-side pressure chamber 18 and a rod-side pressure chamber 19. Tamping picks 20 for immersion in the ballast bed 11 are attached to the lower lever arms of the tamping tools 12.
- the adjusting movement 13 of the respective adjusting cylinder 16 is carried out by applying an adjusting pressure p B .
- this adjusting pressure p B is set on the basis of a determined condition of the ballast bed 11 .
- the condition of the ballast bed 11 is recorded during a separate measuring run before the track processing carried out by the track construction machine 2.
- This preliminary recording is carried out by the track construction machine 2 itself or by another component of the system 1, in particular by a measuring vehicle 21 which travels along the track 3 in front of the track construction machine 2.
- the track construction machine 2 or the measuring vehicle 21 comprises a measuring device 22 for the contactless detection of the ballast bed 11.
- the measuring device 22 has at least one transmitting unit for emitting an electromagnetic primary radiation into the ballast bed 11 and at least one receiving unit for detecting a secondary radiation caused by the primary radiation and reflected back from the ballast bed 11, wherein the receiving unit is spaced apart from the transmitting unit.
- the transmitting frequency is preferably in a range from 1 MHz to 5000 MHz, in particular between 400 MHz and 600 MHz.
- Condition of the ballast bed 11 can be determined.
- the primary radiation is emitted at a single transmitting position and the secondary radiation is detected at several detection positions.
- a plurality of measurement signals are detected that correlate with the nature of the ballast bed 11.
- the distance between the transmitting unit and the at least one receiving unit enables radiation to spread in the ballast bed 11 without being shaded by a sleeper 9 or a rail 10. This also allows the ballast under the respective sleeper 9 and the respective rail 10 to be qualitatively detected.
- a position is detected, for example by means of a GNSS antenna 23.
- Data indicating the condition of the ballast bed 11 linked to a measuring position 25 on the track 3 are sent to a system center 26 via a mobile radio network 24 and stored in a database 27. For subsequent track processing, these data are transferred to an evaluation device 28 of the track construction machine 2. If data has been recorded previously by the track construction machine 2, they are stored immediately in the evaluation device 28. A transfer to the system center 26 is used for documentation purposes if necessary.
- a current position is determined by means of a GNSS antenna 23 arranged on the track construction machine 2 in order to assign the corresponding data on the condition of the ballast bed 11 to a current working position 29 of the tamping unit 6.
- the measuring device 22 is arranged on the track construction machine 2
- the local assignment is carried out in particular via a distance measuring device 30, in particular via a rotary encoder arranged on one of the rail bogies 4.
- the nature of the ballast bed 11 is determined by means of the tamping unit 6 during an immersion process of the tamping pick 20.
- a measurement value is determined that correlates with a penetration force F E , from which the nature of the ballast bed 11 emerges.
- the penetration force F E results from a resulting cylinder force F z of a lowering cylinder 31 and a change in the momentum of the lowered masses.
- pressure sensors 32 for recording the pressures in the cylinder pressure chambers and an acceleration sensor 33 are arranged on the tool carrier 15.
- an average penetration force F E can be determined, which correlates to a high degree with the nature of the ballast bed 11.
- the working position 29 corresponds to a current measuring position 25'. This also applies if the measurements of several consecutive tamping processes are used to determine the condition of the ballast bed 11.
- a setting value E for the auxiliary pressure p B for the application of the auxiliary cylinders 16 is automatically specified.
- an allocation scheme is stored which shows the additional pressure values assigned for different quality indicators.
- an average penetration force F E recorded during the current immersion process of the tamping pick 20 is defined as the quality indicator of the ballast bed 11. If this average penetration force F E is less than 25 kN, the ballast bed 11 is categorised accordingly (low penetration force) and an additional pressure p B of 8 MPa is set. If the average penetration force F E is in a range from 25 kN to 45 kN, for example, an additional pressure p B of 10 MPa is specified. If the average penetration force F E is above 45 kN, an additional pressure p B of 12 MPa is set.
- the measured values determined can also be continuously mapped to the auxiliary pressure p B .
- the setting variable E or the auxiliary pressure p B is stored in the evaluation device 28 as a continuous function 34 of a quality measurement variable, in particular the penetration force F E .
- the setting variable E is automatically determined by means of a corresponding function 34 and specified to a control device 35 of the tamping unit 6 .
- tamping pressure p B can be taken into account in the evaluation device 28.
- these are, for example, a lifting value H, by which the track grid is lifted at the current location by means of the lifting and straightening unit 8, and/or a specified tamping time t B , which specifies the duration of a tamping process, and/or a number A of tamping interventions at the same track location.
- the number A of tamping interventions is automatically specified.
- the filling of the cavity under the tamped sleeper 11 is controlled by means of a recorded filling speed, with insufficient filling of the cavity causing an automatic repetition of the tamping process.
- measurement data of the positioning movement such as the positioning speed and/or a maximum dynamic reaction force F R
- a movement and/or force measuring sensor 36 arranged on the respective tamping tool 12 supplies a corresponding measurement signal.
- the measurement data is fed back into the control device 35, which results in a control of the positioning pressure p B during the positioning process.
- Fig. 3 shows a preferred arrangement for adjusting the auxiliary pressure p B by means of two control valves 37, which are designed as 3/3-way valves.
- Each auxiliary cylinder 16 is connected to a hydraulic system via such control valves 37.
- This comprises a hydraulic pump, which applies a predetermined system pressure to a hydraulic medium, as well as a tank and, if necessary, an oil cooler, an oil filter, etc.
- valve slide In the passive middle position (valve rest position) of the respective control valve 37 shown, a valve slide is held in position with the help of two return springs. In this case, on each side of the Valve slide has a spring force so that there is no connection between a system pressure connection 38 and a tank discharge connection 39 on the one hand and a pressure chamber connection 40 on the other. The corresponding auxiliary cylinder 16 is blocked.
- the respective control valve 37 is moved from the passive middle position into a position proportional to the control signal by the control element on one side pressing against the spring force of the return spring on the opposite side.
- the switching state of the valve slide to the left of the middle position connects the pressure line connection 38 with the respective pressure chamber connection 40, which allows the hydraulic medium to flow in the direction of the lower pressure level if necessary.
- the connection to the tank discharge connection 39 remains interrupted.
- the position of the valve slide to the right of the middle position connects the respective pressure chamber 18, 19 with the tank of the hydraulic system, whereby a flow of the hydraulic medium occurs in the direction of the lower pressure level. In this case, the connection to the system pressure connection 38 remains interrupted.
- Pressure sensors 32 are connected in a fluid-conducting manner to the piston-side pressure chamber 18 and the rod-side pressure chamber 19. This measures the pressure in the respective pressure chamber 18, 19 and converts it into an electrical signal that can be recognized by the control device 35.
- a position measuring sensor 41 is arranged in the vicinity of the respective auxiliary cylinder 16. A measured position signal is read into the control device 35 and processed, from which the position of the piston 42 in the respective auxiliary cylinder 16 can be deduced.
- the control valves 37 are controlled taking the measurement signals into account in such a way that the desired supply pressure p B is obtained in accordance with the predetermined setting value E.
- a respective pressure can be set in each pressure chamber 18, 19 via the position of the valve slides and the resulting proportional connections of the pressure chambers 18, 19 with the system pressure connection 38 and the tank discharge connection 39.
- the supply pressure p B results from the pressure in the piston-side pressure chamber 18 minus the pressure in the rod-side pressure chamber 19, taking into account the ratio between the piston area and the ring area.
- the piston area of the piston 42 delimits the piston-side pressure chamber 18 and the ring area of the piston 42 delimits the rod-side pressure chamber 19.
- the resulting auxiliary pressure p B is advantageously specified as a function of an existing system pressure, for example as a percentage of the system pressure.
- a corresponding output device 43 is arranged in the field of vision of an operator, which enables continuous monitoring. If necessary, the value is adjusted by the operator via an input device 44 in order to take into account aspects independent of the nature of the ballast bed 11. Further adjustment options for the auxiliary pressure p B are available through the use of digital valves or through a variable system pressure. Furthermore, different pressure levels can be provided in the hydraulic system. Alternatingly connecting the respective auxiliary cylinder 16 to one of these pressure levels results in a corresponding adjustment of the auxiliary pressure p B.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50506/2023A AT527392A1 (de) | 2023-06-27 | 2023-06-27 | Verfahren und Gleisbaumaschine zum Unterstopfen von Schwellen eines Gleises |
| ATA50506/2023 | 2023-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025003092A1 true WO2025003092A1 (de) | 2025-01-02 |
Family
ID=91781933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/067739 Ceased WO2025003092A1 (de) | 2023-06-27 | 2024-06-25 | Verfahren und gleisbaumaschine zum unterstopfen von schwellen eines gleises |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT527392A1 (de) |
| WO (1) | WO2025003092A1 (de) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2770108A1 (de) * | 2013-02-22 | 2014-08-27 | System7-Railsupport GmbH | Stopfaggregat für eine Gleisstopfmaschine |
| EP3239398A1 (de) * | 2016-04-29 | 2017-11-01 | HP3 Real GmbH | Stopfaggregat für eine gleisstopfmaschine |
| AT520056A1 (de) | 2017-05-29 | 2018-12-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts |
| AT520698A1 (de) | 2017-12-07 | 2019-06-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und System zur Belastungsüberwachung eines Stopfaggregates |
| AT521850A1 (de) | 2018-10-24 | 2020-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Gleisbaumaschine und Verfahren zum Unterstopfen von Schwellen eines Gleises |
| AT521798A1 (de) | 2018-10-24 | 2020-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Schotterbettes |
| AT524861A4 (de) | 2021-04-12 | 2022-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Maschine zum Stopfen eines Gleises |
| EP3408450B1 (de) * | 2016-01-26 | 2023-03-01 | Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H. | Verfahren zur verdichtung der schotterbettung eines gleises |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT18508U1 (de) * | 2020-06-08 | 2025-07-15 | Hp3 Real Gmbh | Verfahren zur automatischen autonomen Steuerung einer Stopfmaschine |
-
2023
- 2023-06-27 AT ATA50506/2023A patent/AT527392A1/de unknown
-
2024
- 2024-06-25 WO PCT/EP2024/067739 patent/WO2025003092A1/de not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2770108A1 (de) * | 2013-02-22 | 2014-08-27 | System7-Railsupport GmbH | Stopfaggregat für eine Gleisstopfmaschine |
| EP3408450B1 (de) * | 2016-01-26 | 2023-03-01 | Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H. | Verfahren zur verdichtung der schotterbettung eines gleises |
| EP3239398A1 (de) * | 2016-04-29 | 2017-11-01 | HP3 Real GmbH | Stopfaggregat für eine gleisstopfmaschine |
| AT520056A1 (de) | 2017-05-29 | 2018-12-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts |
| AT520698A1 (de) | 2017-12-07 | 2019-06-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und System zur Belastungsüberwachung eines Stopfaggregates |
| AT521850A1 (de) | 2018-10-24 | 2020-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Gleisbaumaschine und Verfahren zum Unterstopfen von Schwellen eines Gleises |
| AT521798A1 (de) | 2018-10-24 | 2020-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Schotterbettes |
| AT524861A4 (de) | 2021-04-12 | 2022-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Maschine zum Stopfen eines Gleises |
Also Published As
| Publication number | Publication date |
|---|---|
| AT527392A1 (de) | 2025-01-15 |
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