• 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 track construction machine (1) for compacting ballast (7) under sleepers (8) of a track (5), with a machine frame (2) which can be moved on the track (5) by means of running gears (3) and with a tamping unit (6 ) comprising an electric vibratory drive (11) for vibrating stuffing tools (12). In this case, an electrical intermediate circuit (14) with an electrical energy store (15) is arranged, wherein at least one chassis (3) is associated with an electrical machine (13) which is coupled for a generator operation with the intermediate circuit (14) and wherein the electrical Vibration drive (11) is coupled to the supply to the intermediate circuit (14). In this way, braking energy is optimally used to supply the vibration drive (11).
    公开号:AT520497A1
    申请号:T394/2017
    申请日:2017-10-03
    公开日:2019-04-15
    发明作者:
    申请人:Plasser & Theurer Export Von Bahnbaumaschinen Gmbh；
    IPC主号:
    专利说明:

    Summary
    Track construction machine for compacting ballast
    The invention relates to a track construction machine (1) for compacting ballast (7) under sleepers (8) of a track (5), with a machine frame (2) which can be moved on the track (5) by means of trolleys (3) and with a tamping unit (6 ), which comprises an electric vibration drive (11) for vibrating tamping tools (12). An electrical intermediate circuit (14) with an electrical energy store (15) is arranged, with at least one undercarriage (3) being assigned an electrical machine (13) which is coupled to the intermediate circuit (14) for generator operation and wherein the electrical Vibration drive (11) for supply to the intermediate circuit (14) is coupled. In this way, braking energy is optimally used to supply the vibration drive (11).
    (Fig. 1) / 15
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    1.9
    description
    Track construction machine for compacting ballast
    TECHNICAL FIELD The invention relates to a track-laying machine for compacting ballast under the sleepers of a track, with a machine frame which can be moved on the track by means of running gears, and with a tamping unit which comprises an electric vibration drive for vibrating tamping tools. In addition, the invention relates to a method for operating the track construction machine.
    PRIOR ART [02] A track construction machine with a tamping unit, which comprises an electric vibration drive for vibrating tamping tools, is known, for example, from DE 24 17 062 A1. Eccentric bearing bushes are arranged in swivel arms to generate vibrations. A chain drive transmits a rotary movement to the eccentric bearing bushes from a drive shaft driven by an electric motor.
    From Austrian patent application A 179/2017, a tamping unit with a central vibration drive is known, the vibration being transmitted to the tamping tools via auxiliary cylinders. The electric vibration drive comprises an eccentric shaft which, together with a rotor of an electric motor, is only mounted in the eccentric housing. A stator of the electric motor is flanged to the eccentric housing with a motor housing.
    Summary of the invention [04] The object of the invention is to provide an improvement over the prior art for a track-laying machine and a method of the type mentioned at the beginning.
    / 15
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    According to the invention, this object is achieved by the independent
    Claims 1 and 11. Advantageous further developments of the invention result from the dependent claims.
    [06] In this case, an electrical intermediate circuit with an electrical energy store is arranged, with at least one undercarriage being assigned an electrical machine which is coupled to the intermediate circuit for generator operation and with the electrical vibration drive being coupled to the intermediate circuit for supply. In this way, braking energy is optimally used to supply the vibration drive. Only a part of the electrical energy has to be stored temporarily because the energy consumption of the vibration drive starts during a braking process of the track-laying machine.
    [07] In an advantageous embodiment of the invention, the electrical energy store comprises a supercapacitor. This enables a high power density to be achieved in a small space and with a low weight. In addition, a supercapacitor allows rapid discharge and a sufficient number of charge and discharge cycles, which optimally supports the vibration drive with recurring, rapidly increasing power peaks.
    [08] Furthermore, it makes sense if the electrical energy store comprises an accumulator. In this way, electrical energy is temporarily stored for a longer period of time. If the accumulator is suitably dimensioned, an additional supply device (e.g. an internal combustion engine-generator unit) can be temporarily switched off (e.g. in a tunnel).
    An advantageous further development provides that the electrical machine is designed as a travel drive and is connected to the intermediate circuit by means of a bidirectional converter. In this way, the track-laying machine is moved from threshold to threshold by means of the electrical machine during a work run, in order to cyclically stuff the sleepers.
    / 15
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    3/9 [10] It is also beneficial if the vibration drive is connected to the DC link by means of a controlled inverter. This ensures a simple and robust circuit structure.
    [11] A further improvement to increase the stability and energy efficiency provides that the vibration drive is designed as a brushless electric motor. A torque motor design with an internal rotor delivers very high torques at relatively low speeds, which means that a transmission gear is not required. The large drive torque of a torque motor enables large accelerations, the resulting dynamics of the system having a positive effect on the immersion process of the tamping unit.
    [12] For efficient operation of the track-laying machine, it is advantageous if a control unit is set up for coordinated control of the components coupled to the intermediate circuit. The control unit can also be used for other control tasks, for example for the control of auxiliary drives. The components to be controlled are advantageously connected to the control unit via a bus system.
    An advantageous embodiment of the invention provides that the tamping unit is arranged on the machine frame and thus there is a cyclic operation of the track construction machine. The entire machine is braked at each threshold for a tamping process, the braking energy being available for generating vibrations. In continuous operation, where only a tamping satellite is cyclically accelerated and braked with the tamping unit, this usable energy is reduced accordingly.
    [14] In order to ensure high availability of the track construction machine, it makes sense if the intermediate circuit is coupled to an internal combustion engine generator unit for additional energy supply. Then there is always enough energy available in the DC link for the vibration drive and the travel drive.
    [15] As an alternative or in addition, it can also be advantageous if the intermediate circuit with a converter circuit for energy supply from a / 15
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    4.9
    Overhead line of the track is coupled. This enables pollutant-free and noise-reduced operation of the track construction machine.
    The method according to the invention provides that the track construction machine is braked by the electrical machine when delivering electrical energy to the intermediate circuit when a point of the track to be tamped is approached, and that the vibration drive is supplied with electrical energy from the intermediate circuit during a tamping process. This ensures efficient operation.
    [17] In an improved method, the tamping tools are subjected to a higher vibration frequency when immersed in the ballast than during an add-on operation. This enables easier penetration into the ballast bed and thus shorter tamping cycles. In addition, the increased vibration frequency and the resulting reduced ballast resistance have a favorable effect on the wear of the tamping tools.
    BRIEF DESCRIPTION OF THE DRAWINGS [18] The invention is explained below by way of example with reference to the accompanying figures. In a schematic representation:
    Fig. 1 track construction machine
    Fig. 2 circuit structure
    Fig. 3 graphs
    DESCRIPTION OF THE EMBODIMENTS [19] The track-laying machine 1 shown in FIG. 1 comprises a machine frame 2 which can be moved on rails 4 of a track 5 by means of trolleys 3. A tamping unit 6 for compacting ballast 7 under sleepers 8 of the track 5 is arranged on the machine frame 2. Before a compaction process, the track 5 is brought into a desired position predetermined by means of a measuring system 10 by means of a lifting-straightening unit 9.
    [20] The tamping unit 6 comprises an electric vibration drive 11 for vibrating tamping tools 12. In addition, / 15
    1718 ·· · · · · · ···· · · ·
    5/9 hydraulic drives for lowering or lifting and for providing the tamping tools 12 are provided. The vibration drive 11 is advantageously designed as a brushless electric motor.
    In the example shown, it is a track construction machine 1 with a cyclical mode of operation, because the entire track construction machine 1 is moved from threshold 8 to threshold 8 during a work trip. The tamping tools 12 are immersed in sleeper compartments located between the sleepers 8 during a holding phase. Alternatively, track construction machines 1 with a continuous mode of operation are known, where only a so-called stuffing satellite is moved cyclically. The predominant mass of the track construction machine 1, however, can run continuously along the track 5.
    In any case, each tamping cycle is initiated with a braking process in order to place the tamping unit 12 above the threshold 8 to be tamped. For this purpose, at least one undercarriage 3 is equipped with an electrical machine 13 which is coupled to an electrical intermediate circuit 14 for generator operation. When a darning point is approached, the electrical machine 13 generates a braking torque. Thus, a large part of the kinetic energy of the track tamping machine 1 or a tamping satellite is converted into electrical energy during a braking operation and supplied to the intermediate circuit 14.
    [23] According to the invention, this electrical energy is used to supply the electrical vibration drive 11. This is advantageous in that the vibrating action on the tamping tools 12 already begins during the braking process and thus there is an immediate use of energy. An energy store 15 arranged in the intermediate circuit 14 accordingly does not have to temporarily store the entire braking energy, as a result of which there is a lower capacity requirement.
    [24] An advantageous circuit structure is shown in Fig. 2. Two electrical machines 13 are arranged, which can be operated both as a generator and as a motor. The respective electrical machine 13 then also serves as a travel drive for accelerating the track-laying machine 1 after a tamping process. In this case, the intermediate circuit is 14 additional / 15
    1718 ·· · ··· ···· ·· ·
    6/9 electrical energy supplied, for example by means of an internal combustion engine generator unit 16 or via a converter circuit from an overhead line. Alternatively, the forward acceleration can be done by a separate drive.
    The respective electrical machine 13 is advantageously designed as a three-phase motor and connected to the DC intermediate circuit 14 via a bidirectional converter 17. The energy store 15 advantageously comprises a supercapacitor 18 and an accumulator
    19. In addition, a charger can be provided in order to supply the battery 19 with an optimal charging voltage.
    [26] The optional internal combustion engine generator unit 16 is coupled to the intermediate circuits 14 via a rectifier 20. It is advantageous if the battery 19 is used to buffer energy for several stuffing cycles. Then, for example, an energy supply for the vibration drive 11 and possibly for the traction drive is available in the tunnel even when the internal combustion engine generator unit 16 is switched off.
    [27] The vibration drive 11 is coupled to the intermediate circuit 14 by means of a controlled inverter 21. The vibration frequency can thus be varied over a stuffing cycle. When immersed in the ballast 7, the tamping tools 12 are subjected to a higher frequency, for example. The vibrated ballast 7 resembles a flowing medium with low immersion resistance. When provided, the frequency is reduced to approximately 35 Hz in order to ensure the desired stability in the compacting ballast 7.
    [28] As can be seen in FIG. 3, the vibration drive 11 requires the most energy when immersed due to the increased frequency. The diagrams show synchronous courses over time 22. The course of a penetration depth 23 of the tamping tool tips into the ballast 7 is shown at the very top. Below this are the curves of a right-of-way speed 24 of the track-laying machine 1 in the working direction 25, a motor power 26 of the vibration drive 11 and a drive or braking power 27 of the electrical machine 13. In a simplified variant, the positive / 15
    1718 ·· · · · · ······· ·
    7.9
    Drive power 27 for the forward acceleration of the track-laying machine 1 can be covered by a separate drive.
    [29] The negative drive or braking power 27 is used in any case to supply the vibration drive 11. Here there is a temporal overlap of the energy 28 output by the electrical machine 13 (hatched area in the drive or braking power diagram 27) and the energy 29 consumed by the vibration drive 11 (hatched area in the motor power diagram 26). As a result of this overlap in time, a considerable part of the energy 28 delivered to the intermediate circuit 14 is immediately consumed without stressing the energy store 15.
    The intermediate circuit 14 with the energy store 15 is advantageously arranged in a central supply unit 30. This comprises a control unit 31 for coordinated control of the components 16, 17, 20, 21 coupled to the intermediate circuit 14. A bus system 32 is provided for connecting the control unit 31 to the coupled components 16, 17, 20, 21.
    [31] Various control signals are expediently supplied to the control unit 31. The continuous detection of an intermediate circuit voltage 33 thus optimizes the energy storage in the intermediate circuit 14 and the activation of the coupled components 16, 17, 20, 21. Detecting the sleepers 8 or rail fastening means by means of optical, capacitive or inductive sensors also enables automated braking and tamping of a detected sleeper 8.
    / 15 :::::. ·:; ··: · ΐ7ΐβ ·· ·· ·· * · · * · ·· ·
    8.9
    权利要求:
    Claims (12)
    [1]
    claims
    1. Track construction machine (1) for compacting ballast (7) under sleepers (8) of a track (5), with a machine frame (2) that can be moved on the track (5) by means of trolleys (3) and with a tamping unit (6), comprising an electric vibration drive (11) for vibrating tamping tools (12), characterized in that an electrical intermediate circuit (14) with an electric energy store (15) is arranged that an electric machine (13) is assigned to at least one undercarriage (3) which is coupled to the intermediate circuit (14) for generator operation and that the electric vibration drive (11) is coupled to the intermediate circuit (14) for supply.
    [2]
    2. Track construction machine (1) according to claim 1, characterized in that the electrical energy store (15) comprises a supercapacitor (18).
    [3]
    3. Track construction machine (1) according to claim 1 or 2, characterized in that the electrical energy store (15) comprises an accumulator (19).
    [4]
    4. Track construction machine (1) according to one of claims 1 to 3, characterized in that the electrical machine (13) is designed as a travel drive and is connected to the intermediate circuit (14) by means of a bidirectional converter (17).
    [5]
    5. Track construction machine (1) according to one of claims 1 to 4, characterized in that the vibration drive (11) is connected to the intermediate circuit (14) by means of an inverter (21).
    [6]
    6. Track construction machine (1) according to one of claims 1 to 5, characterized in that the vibration drive (11) is designed as a brushless electric motor.
    9/15
    1718 ·· ·· ··· · «·« ·· ·
    9.9
    [7]
    7. Track construction machine (1) according to one of claims 1 to 6, characterized in that a control unit (31) for coordinated control of the components (16, 17, 20, 21) coupled to the intermediate circuit (14) is set up.
    [8]
    8. Track construction machine (1) according to one of claims 1 to 7, characterized in that the tamping unit (6) is arranged on the machine frame (2).
    [9]
    9. Track construction machine (1) according to one of claims 1 to 8, characterized in that the intermediate circuit (14) for energy supply with an internal combustion engine generator unit (16) is coupled.
    [10]
    10. Track construction machine (1) according to one of claims 1 to 9, characterized in that the intermediate circuit (14) is coupled to a converter circuit for supplying energy from an overhead line of the track (5).
    [11]
    11. A method for operating a track construction machine (1) according to one of claims 1 to 10, characterized in that the track construction machine (1) when starting a point to be tamped on the track (5) by means of the electrical machine (13) while delivering electrical energy ( 28) is braked to the intermediate circuit (14) and that the vibration drive (11) is supplied with electrical energy (29) from the intermediate circuit (14) during a tamping process.
    [12]
    12. The method according to claim 11, characterized in that the stuffing tools (12) during immersion in the ballast (7) are acted upon with a higher vibration frequency than during an auxiliary operation.
    10/15
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    12/15 austrian patent office
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1653003A2|2004-10-29|2006-05-03|Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.|Method of tamping sleepers|
    WO2017011775A1|2015-07-16|2017-01-19|Harsco Technologies LLC|Coil-oscillator vibration unit for rail workhead|
    WO2017028942A1|2015-08-14|2017-02-23|Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H.|Track construction machine|
    WO2017050414A1|2015-09-23|2017-03-30|Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H.|Track construction machine comprising an autonomous and redundant power supply|
    DE2417062C3|1974-04-08|1982-07-08|Franz Plasser Bahnbaumaschinen-Industriegesellschaft mbH, 1010 Wien|Tamping tool unit for a track tamping machine|
    JP2558439B2|1994-09-29|1996-11-27|大淀ヂ−ゼル株式会社|Positioning auxiliary device for tamping unit|
    US7185591B2|2001-03-27|2007-03-06|General Electric Company|Hybrid energy off highway vehicle propulsion circuit|
    US20060005738A1|2001-03-27|2006-01-12|Kumar Ajith K|Railroad vehicle with energy regeneration|
    AU2010307134A1|2009-10-13|2012-05-10|Harsco Corporation|Battery-powered rail grinder|
    CN104742918B|2015-03-30|2017-09-22|株洲时代电子技术有限公司|Dual power source subway electric transmission rail grinding machine and its powershift method|
    CN105525542B|2016-01-28|2017-12-19|中国铁建高新装备股份有限公司|A kind of double pillow tamping cars of step-by-step movement|AT521412B1|2018-07-04|2020-07-15|Plasser & Theurer Export Von Bahnbaumaschinen Gmbh|Rail vehicle|
    DE102019213662A1|2019-09-09|2021-03-11|Robel Bahnbaumaschinen Gmbh|Method and rail vehicle for carrying out work on a track system|
    AT17099U1|2019-12-10|2021-05-15|Plasser & Theurer Export Von Bahnbaumaschinen Gmbh|Method for operating a rail-guided track-laying machine and track-laying machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA394/2017A|AT520497B1|2017-10-03|2017-10-03|Track construction machine for compacting ballast|ATA394/2017A| AT520497B1|2017-10-03|2017-10-03|Track construction machine for compacting ballast|
    US16/641,762| US20200263363A1|2017-10-03|2018-09-03|Track maintenance machine for compaction of ballast|
    PCT/EP2018/073558| WO2019068400A1|2017-10-03|2018-09-03|Track-building machine for compacting ballast|
    CN201880064291.7A| CN111164261A|2017-10-03|2018-09-03|Machine for ballast tamping of ballast|
    EP18765835.6A| EP3692211A1|2017-10-03|2018-09-03|Track-building machine for compacting ballast|
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