• 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 (1) for submerging sleepers (2) of a track (3), with a lowerable tool carrier (4) and opposite tamping tools (5), each tamping tool (5) via a pivot arm (6) with a Beistellantrieb (7) for generating a Beistellbewegung and with an electric vibration drive (8) is connected to generate a vibrating motion. In this case, the electric vibration drive (8) comprises an eccentric shaft (14) which is mounted together with a rotor (21) of an electric motor (22) only in an eccentric housing (12) and that a stator (24) of the electric motor (22) with a Motor housing (11) is flanged to the eccentric housing (12). Due to the elimination of a separate engine mount, the motor housing (11) has a particularly low overall depth.
    公开号:AT519934A1
    申请号:T179/2017
    申请日:2017-05-03
    公开日:2018-11-15
    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 (1) for tamping sleepers (2) on a track (3) with a lowerable tool holder (4) and opposing tamping tools (5), each tamping tool (5) via a swivel arm (6) with an auxiliary drive (7) for generating a side movement and is connected to an electric vibration drive (8) for generating a vibration movement. The electric vibration drive (8) comprises an eccentric shaft (14) which, together with a rotor (21) of an electric motor (22), is only mounted in an eccentric housing (12) and that a stator (24) of the electric motor (22) with a Motor housing (11) is flanged to the eccentric housing (12). Because there is no separate motor mounting, the motor housing (11) has a particularly small overall depth.
    (Fig. 1) / 16
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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, with a lowerable tool holder and opposing tamping tools, each tamping tool being connected via a swivel arm to an auxiliary drive for generating an auxiliary movement and to an electric vibration drive for generating a vibratory movement ,
    PRIOR ART [02] Tamping units for tamping sleepers on a track are already widely known. A vibration movement is generated by means of an eccentric drive. This includes a rotatable eccentric shaft on which the auxiliary drives for transmitting the vibrations to the tamping ax are articulated.
    From DE 24 17 062 A1 a tamping unit is known in which eccentric bearing bushes are arranged in the swivel arms of the tamping pick for generating vibrations. A chain drive transmits a rotary motion to the eccentric bearing bushes from a drive shaft driven by an electric motor.
    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.
    [05] According to the invention, this object is achieved by a tamping unit according to claim 1. Dependent claims indicate advantageous embodiments of the invention.
    [06] The invention provides that the electric vibration drive is a
    Eccentric shaft includes, together with a rotor of an electric motor / 16
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    2/9 is only stored in an eccentric housing and that a stator of the electric motor is flanged to the eccentric housing with a motor housing. The clear advantage here is the compactness and small design of the tamping unit. Due to the elimination of its own motor mounting, the motor housing has a particularly low overall depth. In the arrangement according to the invention, no gear is also provided, as a result of which a high degree of efficiency and high stability of the drive are achieved.
    [07] In addition, the rotor of the electric motor acts as a flywheel, which means that a separate flywheel can be omitted. By means of the flywheel, kinetic energy is temporarily stored during a vibration oscillation cycle, as a result of which the generation of vibrations has a high overall efficiency. As a further advantage, the use of the electric motor directly on the eccentric shaft allows the vibration frequency to be changed particularly quickly. In this way, the frequency can be continuously adjusted during a stuffing cycle. For example, the frequency is increased when entering a ballast bed and reduced or switched off when the tamping unit is raised.
    [08] It makes sense if the electric motor is a torque motor designed as an internal rotor. Torque motors have very high torques at relatively low speeds. The large drive torque of torque motors enables great accelerations. The resulting great dynamic of the system has a positive effect on the tamping unit immersed in a ballast bed with its tamping pick. There is practically no wear in the torque motor, which has a positive effect on the maintenance of the tamping unit.
    [09] Another advantageous detail of the invention is a water cooling assigned to the electric motor. As a result, the heat generated by the electric motor during operation is dissipated as quickly as possible. The electric motor and the water cooling system are encapsulated so that no dust generated when plugging can get inside the motor.
    [10] In an advantageous embodiment of the invention, it is provided that a / 16 on an end of the eccentric shaft facing the motor housing
    1707
    3/9 positive connection with the rotor is provided. This ensures reliable power transmission.
    [11] A further variant provides that the positive connection is designed as an external toothing of the eccentric shaft and an internal toothing of a bushing connected to the rotor. The interlocking of two connection partners (eccentric shaft, rotor) ensures permanent, stable power transmission. The torque is transmitted evenly over the tooth flanks of the multiple driver connection. For maintenance and repair work, the inner toothing of the rotor is simply pulled off the outer toothing of the eccentric shaft. A simple assembly is done in the opposite way.
    In another variant, the positive connection is designed as a screw connection. On the one hand, this ensures a safe transmission of the torque and, on the other hand, maintenance work can be carried out on site with simple tools.
    [13] The motor housing is advantageously sealed on a bushing of the eccentric shaft with respect to the eccentric housing by means of a sealing ring. This permanently prevents any lubricating oil that may be in the eccentric housing from entering the motor housing.
    [14] It is also advantageous if the motor housing is positioned relative to the eccentric housing by means of a centering. As a result, the motor housing does not have to be aligned with the eccentric housing in order to form a uniform air gap between the rotor and stator.
    In a further advantageous embodiment, the eccentric shaft has a plurality of eccentric sections, different eccentric sections being assigned to the opposing tamping tools. As a result, a favorable opposite vibration vibration is achieved on the opposite tamping tools.
    Another advantageous embodiment provides that the eccentric shaft has an eccentric section on which a transmission element for / 16
    1707
    4.9
    Transmission of the vibration movement is stored. Both auxiliary drives for transmitting the vibration oscillation are then arranged on the transmission element. Such an arrangement makes it possible to change a transmitted vibration amplitude in a simple manner. With a transmission element designed as a connecting rod, the eccentric housing can be sealed in a simple manner, as a result of which dip oil lubrication can be implemented in a simple manner. In addition, the moving masses on the tamping unit are reduced, thus reducing noise.
    BRIEF DESCRIPTION OF THE DRAWINGS [17] The invention is explained below by way of example with reference to the accompanying figures. In a schematic representation:
    Fig. 1 front view tamping unit
    Fig. 2 side view tamping unit
    Fig. 3 Detail view of the eccentric housing and motor housing
    Fig. 4 Detail view of the motor housing
    DESCRIPTION OF THE EMBODIMENTS [18] FIG. 1 shows a simplified tamping unit 1 for tamping sleepers 2 of a track 3 with a lowerable tool carrier 4 and pairs of two opposing tamping tools 5. Each tamping tool 5 is connected to a swivel arm 6 and an auxiliary drive 7 electric vibration drive 8 connected. The respective swivel arm 6 has an upper swivel axis 9 on which the auxiliary drive 7 is mounted. The respective swivel arm 6 is rotatably mounted on the tool carrier 4 about a lower swivel axis 10. Such a tamping unit 1 is provided for installation in a track 3 movable tamping machine or a tamping satellite.
    2 shows a side view of the tamping unit 1, the latter being in a lowered position. The vibration drive 8 of the / 16
    1707 ·· ·· ···· ·· ··· ···
    5.9
    The tamping unit 1 comprises an electric motor 22 with a motor housing
    11, which is attached to the end face of an eccentric housing 12.
    3 shows a detailed view of the electric vibration drive 8 together with the eccentric housing 12 and the motor housing 11. An eccentric shaft 14 is rotatably supported in the eccentric housing 12 by means of roller bearings 13. The auxiliary drives 7 designed as hydraulic cylinders 15, 16 are mounted on the eccentric shaft 14. Rolling bearings are also advantageously used here. The bearing of the eccentric shaft 14 is sufficiently precise and stable to act as the only bearing of a rotor 21 of the electric motor 22.
    In the illustrated embodiment, the eccentric shaft 14 has two eccentrics 17, 18. The first hydraulic cylinder 15 is mounted on the first eccentric 17. For symmetrical power transmission, the second eccentric 18 is divided into two sections on both sides of the first eccentric 17. The second hydraulic cylinder 16 is mounted on this second eccentric 18 by means of a fork-shaped connection.
    In an alternative embodiment, not shown, only an eccentric is provided, on which a transmission element in the form of a connecting rod is arranged. Thus, for example, an upward vibration movement is generated, which is transmitted to obliquely arranged auxiliary drives 7. The position of the auxiliary drives 7 in relation to the transmission element determines the vibration amplitude transmitted to the tamping tools 5.
    [23] The eccentric housing 12 is sealed off from the motor housing 11 by means of a sealing ring 19. At an end 20 of the eccentric shaft 14 facing the motor housing 11, the rotor 21 of the electric motor 22 is arranged and positively connected to the eccentric shaft 14. The form-fitting connection 23 shown in FIG. 3 is designed as a screw connection, the rotor 21 being positioned on the eccentric shaft 14 by means of a centering.
    [24] The electric motor 22 is designed as a torque motor. The dimensioning can be adapted to the embodiment of the tamping unit. If the nominal torque remains the same, for example with an extended / 16
    1707 ·· ·· ···· ·, ··· ,,,
    6.9
    Diameter, the depth of the motor 22 can be reduced. The effect of the rotor 21 as a flywheel can also be optimized. The compact design is also achieved by dispensing with a separate bearing for the rotor 21.
    [25] A stator 24 of the electric motor 22 is arranged inside the motor housing 11. It is important that the stator 24 is precisely aligned with respect to the rotor 21 in order to ensure a uniform air gap both in the circumferential direction and in the longitudinal direction. This is achieved in a simple manner by means of centering 25 of the motor housing 11 in relation to the eccentric housing 12.
    [26] Optionally, the eccentric shaft 14 can have an additional flywheel 26 on a side facing away from the motor housing 11 in order to further increase the flywheel mass if necessary. In addition, a rotary encoder 27 for position detection can be arranged on the eccentric shaft 14.
    4 shows a further embodiment variant of the motor housing 11 flanged to the eccentric housing 12 of an electric motor 22 designed as a torque motor. Here, the positive connection 23 is designed as an external toothing of the eccentric shaft 14 and an internal toothing of a bushing connected to the rotor 21.
    [28] The torque motor has a small overall depth, which has a positive effect on the installation width of the entire tamping unit 1. This design allows the rotor 21 to be centered particularly precisely with respect to the eccentric shaft 14 and the motor housing 11 together with the stator 24 with respect to the eccentric housing 12.
    [29] The motor housing 11 is sealed in itself and against the eccentric housing in order to rule out contamination of the rotor 21 and the stator 24. A cover 30 of the motor housing 11 fastened by means of screws enables the electric motor 22 to be inspected quickly.
    [30] Cooling channels 28 for liquid cooling are arranged around the motor housing 11. Additional cooling is provided by cooling fins 29 arranged around the cooling channels 28. Coolant is continuously passed through the cooling channels 28 by means of a pump (not shown) in order to dissipate the heat generated during operation. This also makes / 16
    1707 ·· ·· ···· ·· ··· ···
    7/9 reliably prevents overheating of the electric motor 22 at high outside temperatures and strong sunlight.
    / 16
    1707 ·· ·· ···· ·· ··· ···
    8.9
    权利要求:
    Claims (10)
    [1]
    claims
    1. tamping unit (1) for tamping sleepers (2) of a track (3) with a lowerable tool holder (4) and opposing tamping tools (5), each tamping tool (5) via a swivel arm (6) with an auxiliary drive (7 ) for generating an auxiliary movement and is connected to an electric vibration drive (8) for generating a vibration movement, characterized in that the electric vibration drive (8) comprises an eccentric shaft (14) which, together with a rotor (21) of an electric motor (22) is only stored in an eccentric housing (12) and that a stator (24) of the electric motor (22) with a motor housing (11) is flanged to the eccentric housing (12).
    [2]
    2. tamping unit (1) according to claim 1, characterized in that the electric motor (22) is a torque motor designed as an internal rotor.
    [3]
    3. tamping unit (1) according to claim 1 or 2, characterized in that the electric motor (22) is assigned a water cooling.
    [4]
    4. tamping unit (1) according to one of claims 1 to 3, characterized in that a positive connection (23) to the rotor (21) is provided on an end (20) of the eccentric shaft (14) facing the motor housing (11).
    [5]
    5. tamping unit (1) according to claim 4, characterized in that the positive connection (23) is designed as external teeth of the eccentric shaft (14) and internal teeth of a bushing connected to the rotor (21).
    [6]
    6. tamping unit according to claim 4, characterized in that the positive connection (23) is designed as a screw connection.
    [7]
    7. tamping unit (1) according to one of claims 1 to 6, characterized in that the motor housing (11) on a passage of the
    9/16
    1707 ·· ·· ··· ♦ ·· ··· ···
    9.9
    Eccentric shaft (14) is sealed off from the eccentric housing (12) by means of a sealing ring (19).
    [8]
    8. tamping unit (1) according to one of claims 1 to 7, characterized in that the motor housing (11) is positioned by means of a centering (25) relative to the eccentric housing (12).
    [9]
    9. tamping unit (1) according to one of claims 1 to 8, characterized in that the eccentric shaft (14) has a plurality of eccentric sections and that the opposite tamping tools (5) are assigned different eccentric sections.
    [10]
    10. tamping unit (1) according to any one of claims 1 to 8, characterized in that the eccentric shaft (14) has an eccentric section on which a transmission element (15) is mounted for transmitting the vibration movement.
    10/16
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    同族专利:
    公开号 | 公开日
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    EP3619358A1|2020-03-11|
    AT519934B1|2019-11-15|
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    CN110621823A|2019-12-27|
    CA3056023A1|2018-11-08|
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    JP2020518744A|2020-06-25|
    US20210102344A1|2021-04-08|
    CN110621823B|2021-10-22|
    EA201900401A1|2020-03-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS5393505A|1977-01-24|1978-08-16|Shibaura Eng Works Ltd|Track bed tamping apparatus|
    BE517202A|1952-08-22|
    US3901159A|1974-03-21|1975-08-26|Canron Inc|Tamping tool head|
    DE2417062C3|1974-04-08|1982-07-08|Franz Plasser Bahnbaumaschinen-Industriegesellschaft mbH, 1010 Wien|Tamping tool unit for a track tamping machine|
    CN1013693B|1986-11-08|1991-08-28|盖凌祥|Electric rammer|
    CN201433341Y|2009-04-07|2010-03-31|常州中铁科技有限公司|Widening device for tamping|
    CN101725093A|2010-02-01|2010-06-09|张忠海|Portable internal-combustion all-hydraulic tamper|
    CN202671987U|2012-06-17|2013-01-16|常州市瑞泰工程机械有限公司|Tamping device|
    AT513277B1|2012-10-24|2014-03-15|Plasser Bahnbaumasch Franz|Machine for submerging a track|
    AT513973B1|2013-02-22|2014-09-15|System7 Railsupport Gmbh|Tamping unit for a tamping machine|
    US9812924B2|2014-11-14|2017-11-07|Steering Solutions Ip Holding Corporation|Motor assembly for an electric power steering assembly|
    WO2016101320A1|2014-12-26|2016-06-30|中车北京二七机车有限公司|Railway track stabilizing device|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
    AT1792017A|AT519934B1|2017-05-03|2017-05-03|Stopfaggregat for clogging thresholds of a track|AT1792017A| AT519934B1|2017-05-03|2017-05-03|Stopfaggregat for clogging thresholds of a track|
    PCT/EP2018/058675| WO2018202380A1|2017-05-03|2018-04-05|Tamping unit for tamping sleepers of a track|
    CA3056023A| CA3056023A1|2017-05-03|2018-04-05|Tamping unit for tamping sleepers of a track|
    JP2019560306A| JP7009507B2|2017-05-03|2018-04-05|Tamping unit for tamping orbital sleepers|
    EA201900401A| EA036812B1|2017-05-03|2018-04-05|Tamping unit for tamping sleepers of a track|
    CN201880029183.6A| CN110621823B|2017-05-03|2018-04-05|Tamping device for tamping sleepers of a track|
    PL18727143T| PL3619358T3|2017-05-03|2018-04-05|Tamping unit for tamping sleepers of a track|
    US16/498,019| US20210102344A1|2017-05-03|2018-04-05|Tamping unit for tamping sleepers of a track|
    ES18727143T| ES2884156T3|2017-05-03|2018-04-05|Batting unit for batting under one-way sleepers|
    EP18727143.2A| EP3619358B1|2017-05-03|2018-04-05|Tamping unit for tamping sleepers of a track|
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