• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a tamping unit for submerging sleepers (2) of a track (3), comprising a tamping unit (1) with a lowerable tool carrier (4) and opposing tamping tools (5), each tamping tool (5) being connected via a pivoting arm (6). connected to a Beistellantrieb (7) for generating a Beistellbewegung and wherein a vibration drive (8) for acting on the stuffing tools (5) is provided with a vibrating movement. It is provided that the vibration drive (8) comprises an electromagnetic actuator (11).
    公开号:AT520796A1
    申请号:T492/2017
    申请日:2017-12-21
    公开日:2019-07-15
    发明作者:
    申请人:Plasser & Theurer Export Von Bahnbaumaschinen Gmbh；
    IPC主号:
    专利说明:

    Summary
    Tamping unit for tamping sleepers on a track
    The invention relates to a tamping unit for tamping sleepers (2) on a track (3), comprising a tamping unit (1) with a lowerable tool holder (4) and opposing tamping tools (5), each tamping tool (5) having a swivel arm (6) an auxiliary drive (7) is connected to generate an auxiliary movement and a vibratory drive (8) is provided to act upon the tamping tools (5) with a vibratory movement. It is provided that the vibration drive (8) comprises an electromagnetic actuator (11).
    Fig. 1/15
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    1.9
    description
    Tamping unit for tamping sleepers on a track
    TECHNICAL FIELD The invention relates to a tamping unit for tamping sleepers on a track, comprising a tamping unit with a lowerable tool carrier and opposing tamping tools, each tamping tool being connected via a swivel arm to an auxiliary drive for generating an auxiliary movement and wherein a vibratory drive for actuating the Darning tools with a vibration movement is provided.
    PRIOR ART For maintenance of a track or after a track renewal there is usually a need to compact a ballast bed. In addition to hand tampers, tamping units are known for this purpose, which are arranged on track construction machines. While the track is being tamped, the track-laying machine moves along the track, with tamping pick attached to the tamping unit being lowered into threshold compartments and provided.
    Stuffing units for tamping sleepers of a track are already widely known, such as. B. by AT 350 097 B. As a vibration exciter is a rotatable eccentric shaft on which the auxiliary drives are articulated to transmit the vibrations to the tamping pick. With this design, the vibration amplitude on the tamping tools is fixed.
    Summary of the invention [04] The object of the invention is to provide an improvement over the prior art for a tamping unit of the type mentioned at the outset.
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    According to the invention, this object is achieved by a tamping unit according to claim 1. Dependent claims indicate advantageous refinements of the invention.
    [06] The invention provides that the vibration drive comprises an electromagnetic actuator. The electromagnetic actuator is a very robust and inexpensive solution for generating a vibration and can be retrofitted to most existing tamping units with little effort. In addition, the electromagnetic actuator offers a particularly low-noise solution for the vibration drive.
    [07] In an advantageous embodiment of the invention, the electromagnetic actuator comprises an armature which is connected to a shaft, the shaft being guided through a housing opening by means of a sliding sleeve. In this way, a mechanical coupling of the shaft connected to the armature with the auxiliary drive leads to a forced transmission of vibrations to the tamping tools. The sliding sleeve offers low-wear storage of the shaft and prevents dust and dirt from entering the housing of the vibration drive.
    [08] Furthermore, it makes sense for the vibration drive to comprise a housing in which cooling channels for cooling by means of a liquid cooling medium are arranged. A heat generated during operation is reliably dissipated by the cooling medium in the cooling channels. This increases the performance and the lifespan of the vibration drive.
    An advantageous further development provides that the vibration drive is coupled to the tool carrier and to the auxiliary drives by means of non-destructively detachable connections. As a result, the vibration drive can be quickly and easily separated from the tool holder if necessary, should there be a defect during work. An adaptation to the local conditions would also be conceivable if, for example If a larger or smaller vibration amplitude is required, the appropriate vibration drive can simply be selected and adapted to the tool holder.
    In addition, it is advantageous if only one armature is movably arranged within a housing which is closed except for bushings,
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    3/9 the anchor being coupled to at least one auxiliary drive. Such a vibration drive is simple in construction and enables different combinations for vibration transmission. Due to the few moving parts within the closed housing, the drive works almost wear-free.
    An advantageous variant of the invention provides that a spring is arranged within the housing, which presses the armature against a cover of the housing. A pulsating electromagnetic force then acts on the armature in only one direction. A restoring force in the opposite direction is applied by means of the spring.
    [12] The cover is preferably arranged within the housing so as to be adjustable in the direction of vibration. As a result, the vibration amplitude of the armature can be changed and adapted to the requirements of the respective work situation. For example, the amplitude is adjusted when the ballast bed quality changes.
    Another advantageous variant of the invention provides that the armature is movably arranged in relation to two magnetic bodies (yokes) and two magnetic coils (excitation windings) and that the armature is coupled in particular to both auxiliary drives. Vibration is generated by alternately energizing the two solenoids. With this variant, no return spring is required. A particularly simple construction of the overall arrangement is provided if the two auxiliary drives are coupled to the armature via a respective shaft.
    An additional variant of the device provides that two anchors are movably arranged within a housing that is closed except for bushings and that each anchor is coupled to one of the two auxiliary drives. In this way, each add-on drive can be subjected to its own vibration. For example, countervailing vibratory movements lead to a reduced vibration load on the tool holder. The compact design is also an advantage, especially when retrofitting existing tamping units.
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    4/9 [15] In a further development of this variant, a spring is assigned to each anchor, which presses the respective anchor against a partition arranged in the housing. As a result, the two electromagnetic actuators are accommodated in a housing in a particularly space-saving manner.
    BRIEF DESCRIPTION OF THE DRAWINGS [16] The invention is explained below by way of example with reference to the accompanying figures. In a schematic representation:
    Fig. 1 tamping unit of a tamping unit
    Fig. 2 actuator with an electromagnet and spring
    Fig. 3 actuator with two electromagnets
    Fig. 4 actuator with two electromagnets and two springs
    DESCRIPTION OF THE EMBODIMENTS [17] FIG. 1 shows a tamping unit 1 of a tamping unit for tamping sleepers 2 of a track 3 with a lowerable tool carrier 4 and pairs of two opposing tamping tools 5. In a tamping unit, several such tamping units 1 can be lowered independently of one another and, if necessary, independently arranged displaceable from one another. Such a tamping unit is intended for installation in a track tamping machine or a tamping satellite that can be moved on the track. In a multi-sleeper tamping unit, several tamping units are arranged one behind the other in the longitudinal direction of the track.
    [18] The respective tamping tool 5 is connected to a vibration drive 8 via a swivel arm 6 and an auxiliary drive 7. Specifically, a connection of the respective swivel arm 6 with the associated auxiliary drive forms an upper swivel axis 9. The respective swivel arm 6 is rotatably mounted on the tool carrier 4 about a lower swivel axis 10. The vibration drive 8 is attached to the tool carrier 4 with non-destructively releasable fastening elements, for example with screw connections, and can also be detached non-destructively with the
    5.15
    1725 • ·· · · · · · · · ”5/9
    Add-on drives connected. In this way, a simple replacement of the vibration drive 8 can be carried out.
    [19] FIG. 2 shows an advantageous variant of an electromagnetic actuator 11.1m. Vibration drive 4, such an actuator 11 is assigned to each auxiliary drive 7. The electromagnetic actuator 11 comprises a cylindrical housing 12. Inside the housing 12 there is an armature 13 which is connected to a shaft 14. The shaft 14 is guided through a housing opening 16 by means of a sliding sleeve 15. At one end of the shaft 14 which is passed through the housing opening 16 there is an annular coupling device 17 to which the associated auxiliary drive 7 is articulated.
    [20] An electromagnet is arranged in the housing and comprises a magnet body 18 (yoke) and a magnet coil 19. The housing 12 is closed on the armature side by a cover 20. A spring 21 presses the armature 13 against the cover 20 when the magnet coil 19 is de-energized, so that an air gap 22 is formed between the armature 13 and the magnet body 18. The cover 20 is adjustable relative to the housing 12 via an external thread 23, so that the air gap 22 between the magnet body 18 and the armature 13 can be varied. In this way, the vibration amplitude transmitted to the tamping tools 5 can be adapted to existing requirements.
    A current flowing through the magnet coil 19 builds up a magnetic field which pulls the armature 13 in the direction of the magnet body 18 and tensions the spring 21. The magnetic field reduces the air gap 22 so that field lines can close via a low magnetic resistance. When the magnet coil 19 is de-energized, the magnetic field is reduced and the spring 21 presses the armature 13 back into the starting position. A pulsating current leads to the desired vibration of the armature 13, the pulse intervals determining the vibration frequency. By specifying the current profile by means of an adjustable control device, the frequency can be easily adapted to the requirements of a stuffing cycle. In this way, the frequency for an intrusion into a ballast bed can be increased and, when the tamping unit 1 is raised, can be reduced to zero.
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    6/9 [22] The conversion of electrical energy into mechanical energy generates heat which is advantageously dissipated through a cooling medium. For this purpose, 12 cooling channels 24 are arranged in the housing, in which the cooling medium circulates. Compared to air cooling, there is the advantage that dust that inevitably occurs in the vicinity of the tamping unit has no effect on the cooling function.
    3 shows a further exemplary embodiment of the electromagnetic actuator 11. Here, a centrally positioned armature 13 is arranged within the housing 12, to which a respective shaft 14 is fastened on both sides. Each shaft 14 is guided through the housing 12 by means of a sliding sleeve 15 and articulated to an auxiliary drive 7 via a coupling device 17. The armature 13 is arranged between two electromagnets, each of which comprises a magnet body 18 and a magnet coil 19. In the de-energized state, the armature 13 is located in the middle between the electromagnets, so that there is an air gap 22 of equal size on both sides of the armature 13. By alternately energizing the magnet coils 19, the armature 13 is moved back and forth with the shafts 14. This vibration is transmitted to the tamping tools 5 via the two auxiliary drives 7 and the swivel arms 6. In this variant, lower currents and weaker magnetic fields are sufficient because no return springs have to be tensioned.
    4, two actuators 11 with the operating principle according to FIG. 2 are arranged in a common housing 12. The armatures 13 of the two actuators 11 are pressed against a common partition 25 by means of a respective spring 21. Here it is not possible to adjust the vibration amplitude in order to enable a compact design. This variant is particularly suitable for retrofitting existing tamping units, with each tamping tool 5 having its own vibration movement.
    [25] The geometric design of the individual elements can be adapted to the respective requirements. For example, the housing 12 can be cuboid. The design of the armatures 13 and electromagnets also depends on the circumstances of a respective stuffing unit 1
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    Customizable 7/9. The requirements are the vibration forces and vibration amplitudes to be applied as well as an available installation space. In addition, several electromagnets can be arranged around the respective shaft 14.
    [26] In a particularly simple embodiment, the vibration drive 8 does not comprise a shaft 14. Only an armature 13 is moved back and forth within a closed housing 12. The inertial forces of the mass of the armature 13 act outwards and are transmitted to the tamping tools 5.
    [27] There is also the possibility of arranging a separate vibration drive 8 on each tamping tool 5 or on each swivel arm 6. Then the transmission via the respective auxiliary cylinder 7 is omitted. For example, the respective lower pivot axis 10 is subjected to a vibration movement or the respective vibration drive 8 is arranged in the region of a tamping tool holder. Then the respective tamping tool 5 is subjected to a corresponding vibration movement.
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    8.9
    权利要求:
    Claims (11)
    [1]
    claims
    1. tamping unit for tamping sleepers (2) of a track (3), comprising a tamping unit (1) with a lowerable tool carrier (4) and opposing tamping tools (5), each tamping tool (5) via a swivel arm (6) with a Add-on drive (7) connected to generate an add-on movement, and wherein a vibratory drive (8) is provided to act upon the tamping tools (5) with a vibrating movement, characterized in that the vibratory drive (8) comprises an electromagnetic actuator (11).
    [2]
    2. tamping unit according to claim 1, characterized in that the electromagnetic actuator (11) comprises an armature (13) which is connected to a shaft (14), and that the shaft (14) by means of a sliding sleeve (15) through a housing opening (16) is performed.
    [3]
    3. tamping unit according to claim 1 or 2, characterized in that the vibration drive (8) comprises a housing (12) in which cooling channels (24) are arranged for cooling by means of a liquid cooling medium.
    [4]
    4. tamping unit according to one of claims 1 to 3, characterized in that the vibration drive (8) by means of non-destructively detachable connections with the tool carrier (4) and with the auxiliary drives (7) is coupled.
    [5]
    5. tamping unit according to one of claims 2 to 4, characterized in that only one armature (13) is movably arranged within a housing (12) closed except for bushings and that the armature (13) is coupled to at least one auxiliary drive (7) ,
    [6]
    6. tamping unit according to claim 5, characterized in that within the housing (12) a spring (21) is arranged, which presses the armature (13) against a cover (20) of the housing (12).
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    9.9
    [7]
    7. tamping unit according to claim 6, characterized in that the cover (20) within the housing (12) is arranged adjustable in the direction of vibration.
    [8]
    8. tamping unit according to claim 5, characterized in that the armature (13) with respect to two magnetic bodies (18) and two magnetic coils (19) is arranged movably and that the armature (13) is coupled in particular to both auxiliary drives (7).
    [9]
    9. tamping unit according to one of claims 2 to 4, characterized in that two anchors (13) are movably arranged within a housing (12) closed except for bushings and that each anchor (13) is coupled to one of the two auxiliary drives (7) ,
    [10]
    10. tamping unit according to claim 9, characterized in that each armature (13) is assigned a spring (21) which presses the respective armature (13) against a partition (25) arranged in the housing (12).
    10/15

    [11]
    11/15

    22 24
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3728737A1|2020-10-28|
    AT520796B1|2020-07-15|
    CN111433411A|2020-07-17|
    US20200392671A1|2020-12-17|
    WO2019120834A1|2019-06-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3621786A|1970-04-22|1971-11-23|Ivan L Joy|Railway ballast tamper|
    WO2017011775A1|2015-07-16|2017-01-19|Harsco Technologies LLC|Coil-oscillator vibration unit for rail workhead|
    AT350097B|1977-02-04|1979-05-10|Plasser Bahnbaumasch Franz|MACHINE FOR PLUGGING THE SLEEPERS OF A TRACK|
    US5593132A|1995-06-30|1997-01-14|Siemens Electric Limited|Electromagnetic actuator arrangement for engine control valve|
    FR2805550B1|2000-02-29|2003-09-26|Anciens Ets Lucien Geismar Soc|RAILWAY BALLAST DRAWING UNIT|
    AT513973B1|2013-02-22|2014-09-15|System7 Railsupport Gmbh|Tamping unit for a tamping machine|
    RU2597258C1|2015-05-29|2016-09-10|Алексей Анатольевич Суслов|Ballast tamper|CN112538794A|2019-09-23|2021-03-23|中国铁建高新装备股份有限公司|Tamping device vibration part with cooling device and corresponding cooling method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA492/2017A|AT520796B1|2017-12-21|2017-12-21|Darning unit for tamping sleepers on a track|ATA492/2017A| AT520796B1|2017-12-21|2017-12-21|Darning unit for tamping sleepers on a track|
    US16/763,131| US20200392671A1|2017-12-21|2018-11-21|Tamping assembly for tamping sleepers of a track|
    CN201880077797.1A| CN111433411A|2017-12-21|2018-11-21|Tamping unit for tamping sleepers of a track|
    PCT/EP2018/081997| WO2019120834A1|2017-12-21|2018-11-21|Tamping assembly for tamping sleepers of a track|
    EP18811748.5A| EP3728737A1|2017-12-21|2018-11-21|Tamping assembly for tamping sleepers of a track|
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