WO2014127393A1 - Stopfaggregat für eine gleisstopfmaschine - Google Patents
Stopfaggregat für eine gleisstopfmaschine Download PDFInfo
- Publication number
- WO2014127393A1 WO2014127393A1 PCT/AT2014/050027 AT2014050027W WO2014127393A1 WO 2014127393 A1 WO2014127393 A1 WO 2014127393A1 AT 2014050027 W AT2014050027 W AT 2014050027W WO 2014127393 A1 WO2014127393 A1 WO 2014127393A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tamping
- hydraulic cylinder
- control
- displacement sensor
- stopfaggregat
- Prior art date
Links
- 230000010355 oscillation Effects 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000033228 biological regulation Effects 0.000 claims description 11
- 238000007654 immersion Methods 0.000 claims description 6
- 238000009732 tufting Methods 0.000 claims description 6
- 238000005056 compaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 206010000496 acne Diseases 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
Definitions
- the invention relates to a tamping unit for a track tamping machine with arranged on a in a Stopfaggregatrahmen height adjustable, arranged carrier, designed as rocker Stopftechnikmaschinefaren whose immersion in a ballast certain lower tamping ends with a vibratory drive in opposite directions drivable and hydraulic to each other bei constructive.
- Stopfaggregate can one, two or more sleepers stuff in one cycle (DE 24 24 829 A).
- the movements of a tamping unit include the vertical immersion of the tamping pick in the ballast, the Beistellieri in which the tamping ends are closed to each other and the superimposed dynamic oscillation which causes the actual compaction of the ballast grains.
- Other known solutions use linear excitation via hydraulic cylinders. Two hydraulic cylinders are mechanically coupled in series. The one hydraulic cylinder performs the Beistellieri, the other the vibratory movement. The size of the resulting vibration is determined mechanically and by the hydraulic excitation. The size of the amplitude can not be adjusted freely.
- Optimum stop frequencies for compaction are known to be between 25-40 Hz, with penetration of the tamping pick in the ballast with higher frequencies is easier, since only a lower immersion occurs and thus the stress on the bearings of the tamping unit can be reduced.
- the tamping units in use today have a very high and costly maintenance. Typically, the units are at least partially overhauled and maintained every season. After 1 - 2 overhauls, the units must be replaced by new ones.
- the amplitude decreases due to the elasticity of the hydraulic hoses and thus the compression effect decreases. From various studies it is known that falling Stopfamplituden affect the compression and also reduce the penetration into the ballast.
- the invention is therefore the object of tamping units of the type described with simple means in such a way that the stability of the vibration drive is significantly increased.
- the invention achieves the stated object in that each of the tamping tools of a pair of tamping tools is assigned a hydraulic cylinder and a displacement sensor for determining the hydraulic cylinder position, the hydraulic cylinders forming the auxiliary drive as well as the vibration drive of the tamping picks and the control of the hydraulic cylinders being dependent on the distance sensor signal.
- a single common hydraulic cylinder is used for the Beistellterrorism and the vibratory movement of at least one stuffing pickle (possibly also of several synchronously driven stuffing pickles of several pairs of stuffing needles).
- the hydraulic cylinder is associated with a transmitter, for example, always detects the exact exact position of the hydraulic piston. Since no rotating parts are provided in the power stage of the drive in contrast to the prior art, the stability of the vibration drive is considerably improved with the simplest construction.
- Hydraulic cylinder control valves in particular servo or proportional valves, which are arranged directly on the hydraulic cylinder, are recommended for actuating the hydraulic cylinders.
- the hydraulic lines should be as short as possible, so that the elasticity, the storage effect (damping) of the hydraulic hoses under the impact load, is kept low.
- Typical requirements are amplitudes of 3-6 mm at the tamping ends at a maximum frequency of 50 Hz. Compression amplitudes close to the upper limit are better, for example, for loose gravel (after track cleaning and track renewal or new track construction).
- the current hydraulic cylinder position is detected by the built-in hydraulic cylinder or externally mounted displacement sensor. Any suitable function sensor can be used.
- the detected position is compared, for example, with a desired position and the respective Hydraulikzylinderan Kunststoffventil with the difference driven according to what a control or regulation is provided.
- the hydraulic cylinder position can thus be predetermined or regulated by a control / regulation as a function of the displacement sensor signals, wherein in particular a linear Beistellterrorism the hydraulic cylinder, a vibration is superimposed.
- the control / regulation specifies the oscillation, the oscillation amplitude and the oscillation frequency, depending on the height and the supplementary position of the tufting ends.
- the setpoint position is specified by an electrical signal course. For this purpose, for example, for a linear Beistellterrorism a linearly increasing voltage (ramp) is specified.
- the opening width of the tamping unit corresponds to a certain predetermined voltage.
- the oscillation in turn corresponds to an alternating voltage superimposed on the supply voltage.
- the amplitude of the AC voltage then corresponds to the vibration amplitude and the frequency of the AC voltage of the stop frequency.
- the main advantages of the invention are the simple construction, which does not require wear-prone rolling bearings, connecting rods and connecting rod bearings of the coupling of the auxiliary cylinder on the vibration wave and does not require a flywheel.
- the Stoppffaggregatö Wennsweite ie the distance between the tufting ends, infinitely adjustable and is any free preselection of the stop frequency, such as immersion of the pimple with 50 Hz for a low insertion shock and a compacting with 35 Hz in working position the pimples to reduce wear and of noise, easily possible.
- a continuous adjustment of the stuffing amplitude and its signal shape allows an optimal adaptation to the respective superstructure conditions. Is a control circuit provided there is an automatic readjustment of the stuffing movement in the event of resistance changes by the control circuit, thus ensuring compliance with the desired stuffing amplitudes and frequencies.
- the Beistellweg will be specified by the controller / regulation.
- the control / regulation specifies the oscillation, the oscillation amplitude and the oscillation frequency as a function of the cylinder pressure measured, in particular with a pressure sensor. So can be deduced by a pressure measurement in the hydraulic cylinder on the compaction of the ballast bed.
- FIG. 1 is a tamping unit according to the invention in a partially sectioned side view
- Fig. 2 is a diagram illustrating the Beistelllage the stuffing tools. Way to carry out the invention
- a tamping unit 1 for a tamping machine comprises, inter alia, arranged on a support 2, designed as a swing lever Stopftechnikmaschinepare with Stopftechnikmaschineen 3, whose intended for immersion in a ballast 4 lower tufting ends 5 with a vibratory drive 6 in opposite directions drivable and hydraulically to each other, with a Beistellweg s, bei constitution are.
- the carrier 2 is guided vertically adjustable in a Stopfaggregatrahmen 7 with guides 8 and displaced with a control cylinder 9 in the desired altitude.
- the stuffing tools 3 are designed as two-armed levers which are pivotally mounted on the carrier 2. One arm of the respective stuffing tool 3 is formed by a tamping pick 10 and on the other arm engages a hydraulic cylinder 1 1, which is in turn mounted on the carrier 2.
- Each of the stuffing tools 3 of a Stopftechnikmaschines are associated with a hydraulic cylinder 1 1 and a displacement sensor 12 for determining the hydraulic cylinder position, wherein the hydraulic cylinder 1 1 form the Beistellantrieb and the vibration drive for the tamping 10 and the control of the hydraulic cylinder 1 1 wegsensorsignalcommun.
- the displacement sensor 12 the exact stroke position of the hydraulic cylinder 11, ie the distance between its two articulation points, at one end on the stuffing tool 3 and on the other end on the carrier 2, can always be determined.
- the displacement sensor 12 and the hydraulic cylinder 1 1 form a structural unit and the displacement sensor 12 is integrated into the hydraulic cylinder 11.
- Hydraulikzylinderan horrinventile 13 in particular servo or proportional valves, are provided for actuating the hydraulic cylinder, which are arranged directly on the hydraulic cylinder 1 1.
- the supply lines of the hydraulics, so the pump lines and the tank lines are not shown for clarity.
- the supply of the tamping unit with hydraulic energy via a standard hydraulic unit.
- the hydraulic cylinder position can be predetermined by a control / regulation 14 as a function of the displacement sensor signals.
- the control / regulation 14 is connected via control lines 15 to the Hydraulikzylinderan Kunststoffventile 13 and via measuring lines 16 to the displacement sensors 12.
- the control / regulation 14 can specify the oscillation, that is to say the oscillation amplitude and the oscillation frequency, as a function of the altitude h and the auxiliary position s of the tamping pick 10.
- the provision s and the vibration excitation of the tamping pick 10 is thus carried out by a hydraulic cylinder, wherein a hydraulic cylinder 1 1 per tamping 10 is provided or even a hydraulic cylinder 1 1 may be provided for a plurality of synchronously moving tamping 10.
- Fig. 2 it is shown that a linear Beistellterrorism the hydraulic cylinder 1 1 is a vibration superimposed.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Measuring Fluid Pressure (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480016782.6A CN105189868A (zh) | 2013-02-22 | 2014-01-22 | 用于轨道捣固机的捣固设备 |
US14/769,585 US9957668B2 (en) | 2013-02-22 | 2014-01-22 | Tamping unit for a track tamping machine |
RU2015135381A RU2640165C2 (ru) | 2013-02-22 | 2014-01-22 | Подбивочный агрегат для шпалоподбивочной машины |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50121/2013A AT513973B1 (de) | 2013-02-22 | 2013-02-22 | Stopfaggregat für eine Gleisstopfmaschine |
ATA50121/2013 | 2013-02-22 | ||
EP13160788.9A EP2770108B1 (de) | 2013-02-22 | 2013-03-25 | Stopfaggregat für eine Gleisstopfmaschine |
EP13160788.9 | 2013-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014127393A1 true WO2014127393A1 (de) | 2014-08-28 |
Family
ID=48040006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2014/050027 WO2014127393A1 (de) | 2013-02-22 | 2014-01-22 | Stopfaggregat für eine gleisstopfmaschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US9957668B2 (de) |
EP (1) | EP2770108B1 (de) |
CN (2) | CN109577114A (de) |
AT (1) | AT513973B1 (de) |
ES (1) | ES2879282T3 (de) |
PL (1) | PL2770108T3 (de) |
RU (1) | RU2640165C2 (de) |
WO (1) | WO2014127393A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018205821A1 (de) | 2018-04-17 | 2019-10-17 | Robert Bosch Gmbh | Vibrationsantreiben mit einem Mehrflächenzylinder |
AT524861B1 (de) * | 2021-04-12 | 2022-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Maschine zum Stopfen eines Gleises |
US12049731B2 (en) | 2018-10-24 | 2024-07-30 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Track maintenance machine and method for tamping sleepers of a track |
Families Citing this family (37)
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AT14095U3 (de) * | 2014-10-17 | 2015-12-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat zum Unterstopfen von Schwellen eines Gleises |
AT516671B1 (de) * | 2014-12-22 | 2017-01-15 | System 7 - Railsupport GmbH | Stopfaggregat für eine Gleisstopfmaschine |
US10125456B2 (en) * | 2015-07-10 | 2018-11-13 | Harsco Technologies LLC | Workhead assembly for rail applications |
AT518024B1 (de) * | 2015-11-18 | 2018-04-15 | Hp3 Real Gmbh | Gleisfahrbare Gleisverdichtmaschine |
AT517999B1 (de) * | 2015-11-20 | 2018-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat und Verfahren zum Stopfen eines Gleises |
AT517843B1 (de) * | 2015-11-24 | 2017-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren sowie Stopfaggregat zum Unterstopfen eines Gleises |
AT518025A1 (de) * | 2015-12-10 | 2017-06-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat und Verfahren zum Unterstopfen eines Gleises |
FR3047016B1 (fr) * | 2016-01-21 | 2019-09-06 | Matisa Materiel Industriel S.A. | Machine de bourrage a moteurs hydrauliques synchronises |
AT518195B1 (de) | 2016-01-26 | 2017-11-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren zur Verdichtung der Schotterbettung eines Gleises sowie Stopfaggregat |
AT518072B1 (de) | 2016-04-29 | 2017-07-15 | Hp3 Real Gmbh | Stopfaggregat für eine Gleisstopfmaschine |
AT518693B1 (de) * | 2016-05-24 | 2020-02-15 | Plasser & Theurer Exp Von Bahnbaumaschinen G M B H | Prüfvorrichtung und Verfahren zum Prüfen eines Stopfaggregates |
US20180010302A1 (en) * | 2016-07-05 | 2018-01-11 | Harsco Technologies LLC | Apparatus and method for tamping ballast |
ES2652524B1 (es) * | 2016-08-02 | 2018-09-25 | Jose Antonio Ibañez Latorre | Grupo de bateo para máquinas de mantenimiento ferroviario con capacidad de batear el balasto bajo las traviesas de la vía, tanto las simples como las dobles |
AT519048A1 (de) * | 2016-08-31 | 2018-03-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat |
AT519195B1 (de) * | 2016-10-04 | 2019-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat und Verfahren zum Unterstopfen von Schwellen eines Gleises |
AT519219B1 (de) * | 2016-11-25 | 2018-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat zum Unterstopfen von Schwellen eines Gleises |
CN106868961B (zh) * | 2017-03-23 | 2018-11-30 | 株洲时代电子技术有限公司 | 一种自动换轨控制方法 |
CN106968143B (zh) * | 2017-03-23 | 2018-11-30 | 株洲时代电子技术有限公司 | 一种自动换轨控制系统 |
AT519934B1 (de) * | 2017-05-03 | 2019-11-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat zum Unterstopfen von Schwellen eines Gleises |
AT520056B1 (de) | 2017-05-29 | 2020-12-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts |
AT519738B1 (de) * | 2017-07-04 | 2018-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts |
AT520698B1 (de) * | 2017-12-07 | 2020-09-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und System zur Belastungsüberwachung eines Stopfaggregates |
AT520796B1 (de) * | 2017-12-21 | 2020-07-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat zum Unterstopfen von Schwellen eines Gleises |
AT520771B1 (de) * | 2017-12-28 | 2020-08-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren zum Betreiben eines Stopfaggregats einer Gleisbaumaschine sowie Stopfvorrichtung zur Gleisbettverdichtung und Gleisbaumaschine |
AT16251U1 (de) * | 2018-01-22 | 2019-05-15 | Hp3 Real Gmbh | Stopfaggregat für eine Gleisstopfmaschine |
AT16726U1 (de) | 2018-09-13 | 2020-07-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Unterstopfen von Schwellen eines Gleises |
AT521765B1 (de) * | 2018-09-18 | 2021-06-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat und Verfahren zum Unterstopfen von Schwellen eines Gleises |
AT521798B1 (de) * | 2018-10-24 | 2021-04-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Schotterbettes |
CN110629604B (zh) * | 2019-10-25 | 2021-01-26 | 哈尔滨哈铁装备制造有限公司 | 一种轨道维护用捣固装置 |
CN111706572B (zh) * | 2020-06-28 | 2022-07-08 | 中国铁建重工集团股份有限公司 | 一种液压捣固装置 |
CN112064431B (zh) * | 2020-09-11 | 2022-08-16 | 李卫 | 一种轨道交通用捣固机 |
CN112160196A (zh) * | 2020-10-21 | 2021-01-01 | 中国铁建高新装备股份有限公司 | 捣固装置及捣固车 |
AT524403A1 (de) * | 2020-10-28 | 2022-05-15 | Hp3 Real Gmbh | Stopfaggregat für eine Gleisstopfmaschine |
RU2765725C1 (ru) * | 2021-04-09 | 2022-02-02 | Анатолий Николаевич Шилкин | Способ управления процессом уплотнения балластного слоя рельсового пути |
AT525038B1 (de) | 2021-08-04 | 2022-12-15 | Hp3 Real Gmbh | Verfahren zum Verdichten von Schotter einer Gleisbettung |
IT202100022355A1 (it) * | 2021-08-26 | 2023-02-26 | Colmar Technik S P A | Attrezzatura perfezionata per la rincalzatura in infrastrutture ferroviarie |
AT526338B1 (de) | 2022-10-25 | 2024-02-15 | Hp3 Real Gmbh | Verfahren zur automatischen Auswertung von Gleismessdaten |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2424829A1 (de) | 1974-05-22 | 1976-01-08 | Deutsche Bundesbahn | Verfahren zur erhoehung von arbeitsgeschwindigkeit und arbeitsgenauigkeit von gleisstopfmaschinen |
US4092903A (en) * | 1975-11-17 | 1978-06-06 | Graystone Corporation | Vibratory drive mechanism |
EP0688902A1 (de) * | 1994-06-17 | 1995-12-27 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Verfahren zur kontinuierlichen Messung des Querverschiebewiderstandes eines Gleises |
EP1653003A2 (de) * | 2004-10-29 | 2006-05-03 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Verfahren zum Unterstopfen von Schwellen |
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US3625156A (en) * | 1969-09-05 | 1971-12-07 | Jackson Vibrators | Ballast tamping workhead |
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-
2013
- 2013-02-22 AT ATA50121/2013A patent/AT513973B1/de active
- 2013-03-25 PL PL13160788T patent/PL2770108T3/pl unknown
- 2013-03-25 ES ES13160788T patent/ES2879282T3/es active Active
- 2013-03-25 EP EP13160788.9A patent/EP2770108B1/de active Active
-
2014
- 2014-01-22 CN CN201811166525.7A patent/CN109577114A/zh active Pending
- 2014-01-22 CN CN201480016782.6A patent/CN105189868A/zh active Pending
- 2014-01-22 WO PCT/AT2014/050027 patent/WO2014127393A1/de active Application Filing
- 2014-01-22 US US14/769,585 patent/US9957668B2/en active Active
- 2014-01-22 RU RU2015135381A patent/RU2640165C2/ru active
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DE2424829A1 (de) | 1974-05-22 | 1976-01-08 | Deutsche Bundesbahn | Verfahren zur erhoehung von arbeitsgeschwindigkeit und arbeitsgenauigkeit von gleisstopfmaschinen |
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EP0688902A1 (de) * | 1994-06-17 | 1995-12-27 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Verfahren zur kontinuierlichen Messung des Querverschiebewiderstandes eines Gleises |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018205821A1 (de) | 2018-04-17 | 2019-10-17 | Robert Bosch Gmbh | Vibrationsantreiben mit einem Mehrflächenzylinder |
EP3556478A1 (de) | 2018-04-17 | 2019-10-23 | Robert Bosch GmbH | Vibrationsantreiben mit einem mehrflächenzylinder |
US12049731B2 (en) | 2018-10-24 | 2024-07-30 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Track maintenance machine and method for tamping sleepers of a track |
AT524861B1 (de) * | 2021-04-12 | 2022-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Maschine zum Stopfen eines Gleises |
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 |
---|---|
RU2640165C2 (ru) | 2017-12-26 |
AT513973B1 (de) | 2014-09-15 |
RU2015135381A (ru) | 2017-03-28 |
PL2770108T3 (pl) | 2021-11-29 |
ES2879282T3 (es) | 2021-11-22 |
EP2770108B1 (de) | 2021-05-05 |
EP2770108A1 (de) | 2014-08-27 |
CN105189868A (zh) | 2015-12-23 |
CN109577114A (zh) | 2019-04-05 |
US9957668B2 (en) | 2018-05-01 |
US20160010287A1 (en) | 2016-01-14 |
AT513973A4 (de) | 2014-09-15 |
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