• 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:
    A device for detecting obstacles in a rail vehicle (1), with a Bahnräumer bar (6) by means of a mounting bracket (7) in front of the direction of travel in the first wheel (11) on the bogie frame (5) of the rail vehicle (1) is held, wherein the Mounting bracket (7) by vertically arranged spring elements, in particular leaf springs (8) is formed, each leaf spring (8) at an upper end (9) with the bogie frame (5) and at a lower end (10) with the Bahnräumer beam ( 6), wherein each leaf spring (8) has a strain-voltage converter (2) which is arranged between the upper end (9) and the lower end (10) on a wide surface (12) of a leaf spring (8), and wherein each strain-voltage converter (2) via a signal-conducting connection (13) with an onboard evaluation unit (13) is connected.
    公开号:AT515578A1
    申请号:T50180/2014
    申请日:2014-03-12
    公开日:2015-10-15
    发明作者:Andreas Dipl Ing Fh Koller
    申请人:Siemens Ag Österreich；
    IPC主号:
    专利说明:

    description
    Device for obstacle detection in rail vehicles
    Technical area
    The present invention relates to an obstacle detection device for railway vehicles having a track cleaner which is fixed to the bogie of a rail vehicle by means of a holding device.
    State of the art
    A foreign body lying on the route of a railroad network can pose a serious danger in the event of a collision. In rail technology therefore long rail clearers or Bahnräumer are known, with which an obstacle can be cleared from the track. A track scraper usually consists of a steel construction, with a collision beam lying transversely to the direction of travel. The collision bar is fixed by means of a mounting bracket to the main frame of the rail vehicle or to the bogie frame. Various regulations on the construction and operation of a rail vehicle stipulate that such a track cleaner must be arranged in front of the first wheel set in the direction of travel and at the smallest possible distance from the rail upper edge.
    EP 2 548 783 A2, for example, proposes collision detection in a rail vehicle in which a track cleaner is held by means of a mounting bracket, wherein a guided design of the track cleaner is released with respect to the mounting bracket when a specifiable intensity of the collision is exceeded. An obstacle detection in the sense of a differentiated detection of the collision object is not possible.
    Known railway cleaners have the disadvantage that a statement about the collision can only be made in the form of a yes-no-decision. If the intensity of the collision is below a predetermined threshold, the collision is not detected at all. If the intensity of the collision was greater, it remains unknown how big it actually was.
    On the part of the operators of rail vehicles, however, it is increasingly required that an obstacle detection detects a collision of differentiated. For example, the obstacle detection should be able to reliably detect a predetermined mass limit value, for example 5 kg, and possibly initiate rapid braking of the rail vehicle.
    Presentation of the invention
    It is an object of the present invention to provide a device for obstacle detection in rail vehicles so that a more accurate statement about the collision mass is possible and which is as simple and cost-effective to produce.
    This object is achieved by a device having the features of claim 1. Advantageous embodiments of the invention are defined in the dependent claims.
    According to a basic idea of the invention, spring elements serve both for mounting the track-clearing bar and for measuring the force-time course in the event of a collision. The mounting bracket of the track cleaner beam is formed by vertically disposed spring members, preferably leaf springs, each leaf spring being secured at an upper end to the bogie frame and at a lower end to the track cleaner beam. Each leaf spring has one
    This transducer is arranged between the upper end and the lower end on a wide surface of a leaf spring and connected via a signal-conducting connection with an on-board evaluation unit. This makes it possible to detect an obstacle differentiated, and not only if it exceeds a fixed collision limit. Disturbances which occur at increased driving speed can be better taken into account for the subsequent actions. This reduces the frequency of unintentional braking.
    In terms of susceptibility, it is advantageous if the measurement signal generated by the force-measuring device quasivor location, i. is supplied by means arranged at the Bahnräumer holding device means of a signal preprocessing. For example, the measurement signal may be an analog or digital signal. It is advantageous here if the measurement signal is checked for plausibility and forwarded as an amplified signal to an evaluation unit.
    An embodiment may be preferred in which the trimming device is formed by at least two vertically disposed spring elements, each spring element being secured at an upper end to the bogie and at a lower end to the trimmer. The vertical arrangement ensures that the weight of the trimmer does not bear on the transmitter. As a result, the measuring device is not loaded by shear forces.
    It may be advantageous in terms of manufacturing cost if the strain-voltage converter is a piezoelectric transducer or a strain gauge strip.
    In particular, unintentional braking operations can be prevented if the speed of the rail vehicle is taken into account in the on-board signal processing of these transducers. As a result, inadvertent braking is less frequent, especially at higher speeds.
    In this case, it is favorable if the electronic evaluation unit is designed as a digital computer and is integrated in a safety loop or in an electronic vehicle bus. As a result, a brake command, which is generated by the evaluation unit, be forwarded directly to the corresponding actuator, or be reported to the driver.
    A simple and robust design may be constructed such that the mounting bracket is formed by two vertically arranged leaf springs spaced apart from one another to approximately the width of the bogie frame. Each leaf spring acts as a clamped beam, which is subjected to bending in the event of a collision, and at the same time as a force sensor which sends a time-dependent force signal to the evaluation unit.
    Brief description of the drawing
    To further explain the invention, in the following part of the description reference is made to drawings, from which further advantageous embodiments, details and further developments of the invention can be gathered by way of non-restrictive embodiments.
    Show it:
    Figure 1 shows an embodiment of the invention, in which the suspended suspension of the sheet clearing bar by means of two vertically arranged leaf springs is shown in a schematic representation;
    Figure 2 is an enlarged view of a leaf spring of Figure 1, in which the measuring device is shown enlarged;
    FIG. 3 shows a block diagram in which the connection between the measuring device and the evaluation device and its integration into the safety loop and the vehicle bus are shown.
    Embodiment of the invention
    1 shows a diagrammatic view of a bogie frame 5 of a rail vehicle 1. The bogie frame 5 has a front wheel set 11. In the direction of travel (arrow) in front of this wheel set 11, a track cleaner beam 6 arranged transversely to the direction of travel is sketched. By means of a mounting bracket 7, this track cleaner Beam 6 attached to the bogie frame 5.
    As will be explained in more detail below, the mounting bracket 7 not only forms a mechanical suspension for the scraper bar 6, but also functions as a force sensor which, in the event of a collision with an obstacle, converts the collision force that occurs into a proportional electrical signal and forwards it to an electronic evaluation unit.
    The mounting bracket 7 is designed as a suspended construction. It consists in the embodiment shown essentially of two vertically arranged spring plates or leaf springs 8. Each of these leaf springs 8 is formed from a cross-section rectangular shaped spring steel. This spring steel 8 is attached to an upper end 9 on the bogie frame. A lower end 10 of each leaf spring 8 is connected to the web-clearing bar 6 transverse to the direction of travel. The connection can be made by screws, rivets or by welding. Each leaf spring 8 is in the
    Trap of a collision like a one-sided clamped beam claimed bending.
    The distance 17 between the leaf springs 8 corresponds approximately to the width of the bogie frame. For externally mounted bogies, the distance is slightly larger than the track width, with internally mounted bogies slightly smaller than the gauge.
    The leaf springs 8 are in terms of their
    Material quality and in terms of their Querschnittsesso dimensioned that occur in ferry operation especially at higher speeds vibrations and shocks do not interfere with the obstacle detection.
    If there is now a collision with an obstacle located on the rail or in the rail bed, the suspension construction is bent backwards in the direction of wheel set 11. This deflection of the leaf springs 8, which is opposite to the direction of travel, is a measure of the size of the distance from the tracker bar 6 obstacle. The elastic deformation of the spring steel 8 is measured by means of a measuring device 2, 3 (Figure 2). By registering the time course of the force signal at the collision, a differentiated detection of the collision object is possible.
    A spatial arrangement of this measuring device 2, 3 shows this chemical representation of FIG. 2. On a wide surface 12 of a leaf spring 8, a strain-voltage converter 2 with an associated measuring amplifier 3 can be seen. The strain-voltage converter 2 and the sense amplifier 3 are disposed between the upper end 9 and the lower end 10 on the same wide surface 12 of the leaf spring 8. Holes are shown at the upper and lower ends, respectively, with which the leaf spring is bolted to the bogie frame and to the web clearer beam, respectively.
    The arrangement of leaf spring 8 and strain-voltage converter 2 acts as a force-displacement transducer as already mentioned: The strain-voltage converter 2 converts the elastic deformation of the leaf spring 8, which occurs in the event of an impact with an obstacle, into a proportional electrical voltage signal. This voltage signal corresponds to an analogous force-time curve. The signal is first supplied via the connection line 4 to a measuring amplifier 3 assigned to the measuring transducer 2. The measuring amplifier 3 locally amplifies the signal of the strain-voltage converter 2 to a corresponding analog level, so that the signal transmission is less prone to failure.
    The amplified electrical signal then passes from the sense amplifier 3 via the connection line 4 to an electronic evaluation unit 13 located on board the rail vehicle 1. The power supply for the transmitter 2 and the measuring amplifier 3 is provided via the connection line 4, and the signal line to the evaluation unit 13 via the connection line 4. The external unit is a digital computer in the following embodiment.
    In the evaluation unit 13, according to a technical signal analysis, a comparison with a triggering threshold dependent on the vehicle speed takes place. If the conditioned measuring signal exceeds a predetermined threshold value, a safety loop 15 opens directly and emergency braking of the rail vehicle 1 is initiated. If the conditioned measuring signal remains below a predefinable threshold value, a message is sent to the driver via an internal vehicle bus 16. The threshold value is specified by the evaluation unit as a function of the speed and optionally other driving parameters, for example acceleration and shock.
    The advantage of the invention lies first of all in the fact that a collision is not monitored as a threshold value, as hitherto usual, but an obstacle can be differentiated. This allows the triggering threshold to be set according to the severity of the collision and the vehicle speed. So it is less often to unwanted braking.
    The spring steel mounting bracket is mechanically robust and easy to manufacture. Expansive voltage transformers are commercially available components. The attachment of a piezo or strain-measuring strip can be done in a simple manner and inexpensively by means of an adhesive bond on the leaf spring. In sum, the manufacturing cost of the web grader beam suspension attachment is comparatively low.
    Although the invention has been further illustrated and described in detail by the preferred embodiments set forth above, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
    Thus, for example, the above-described suspension with two leaf springs can be realized by a different suspension construction, for example with a plurality of leaf springs.
    The vertical arrangement of the leaf springs may also be slightly inclined. Of course, the attachment of the spring elements can be done as well on a frame structure of the rail vehicle. Likewise, a plurality of transducers and amplifiers may be disposed on a leaf spring, thereby improving the reliability of the measuring device.
    Compilation of the reference numbers used 1 Rail vehicle 2 Expansion voltage transformer 3 Measuring amplifier 4 Connecting line 5 Bogie frame 6 Bahnräumer beam 7 Mounting bracket 8 spring element, leaf spring 9 upper end 10 lower end 11 wheelset 12 wide area 13 evaluation unit 14 speed signal 15 safety loop 16 vehicle bus 17 distance between 8
    权利要求:
    Claims (8)
    [1]
    1. A device for detecting obstacles in a rail vehicle (1), with a Bahnräumer beam (6), which is held by means of a mounting bracket (7) in front of the in-direction first wheel set (11) on the bogie frame (5) of the rail vehicle (1), characterized in that the mounting bracket (7) is formed by vertically arranged spring elements (8), that each spring element (8) at an upper end (9) with the bogie frame (5) and at a lower end (10) with the Bahnräumer beam (6) in that each spring element (8) comprises a strain-to-strain transducer (2) arranged between the upper end (9) and the lower end (10) on a wide surface (12) of a spring element (8) and that each strain-voltage transducer (8) 2) is connected via a signal-conducting connection (13) to an onboard evaluation unit (13).
    [2]
    2. Device according to claim 1, characterized in that each spring element (8) is formed as a leaf spring.
    [3]
    3. Device according to claim 1 or 2, characterized in that the signal-conducting connection (13) via a strain-voltage converter (2) associated measuring amplifier (3) leads, wherein strain-voltage converter (2) and associated measuring amplifier (3) together on the Wide surface (12) of a leaf spring (8) are arranged.
    [4]
    4. Device according to claim 3, characterized in that the strain-voltage converter (2) is a piezoelectric transducer.
    [5]
    5. Apparatus according to claim 1 or 2, characterized in that the strain-voltage converter (2) is designed as an elongation-measuring strip.
    [6]
    6. Device according to claim 1 or 2, characterized in that the evaluation unit (13) is supplied with a speed signal (14) of the rail vehicle (1), which is taken into account in the initiation of a braking operation.
    [7]
    7. Device according to Claim 5, characterized in that the evaluation unit (13) is connected to a safety loop (14) and to an electronic vehicle bus (15).
    [8]
    8th . Apparatus according to claim 1, characterized in that the mounting bracket (7) by two leaf springs (8) is formed, which have a distance (17) to each other, which corresponds to the width of the bogie frame.
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    同族专利:
    公开号 | 公开日
    WO2015135752A1|2015-09-17|
    AT515578B1|2015-12-15|
    US10286936B2|2019-05-14|
    CN106103235B|2018-12-18|
    RU2647094C1|2018-03-13|
    EP3116762A1|2017-01-18|
    CN106103235A|2016-11-09|
    US20170015335A1|2017-01-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE378143C|1922-04-04|1923-07-06|Johann Matthias Roegels|Spring clearers for road and rail vehicles|
    KR20110095651A|2010-02-19|2011-08-25|김봉택|A obstacle sensing system for train|
    EP2548783A2|2011-07-22|2013-01-23|Bombardier Transportation GmbH|Collision detection for a vehicle|
    CN102407862A|2011-10-19|2012-04-11|无锡市福曼科技有限公司|Improved track cleaning structure of mobile shelf|
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    US7770847B1|2005-08-17|2010-08-10|Qs Industries, Inc.|Signaling and remote control train operation|
    US20100148013A1|2005-12-23|2010-06-17|General Electric Company|System and method for optical locomotive decoupling detection|
    JP4891620B2|2006-01-17|2012-03-07|日立電線株式会社|Impact detection sensor|
    KR100837174B1|2007-03-05|2008-06-11|현대로템 주식회사|Obstacle detection device|
    DE102007016711A1|2007-04-04|2008-10-09|Bombardier Transportation Gmbh|Detecting passenger safety conditions on a rail vehicle|
    US7812508B2|2008-02-06|2010-10-12|Innowattech Ltd.|Power harvesting from railway; apparatus, system and method|
    DE102008048601A1|2008-09-23|2010-04-08|Bombardier Transportation Gmbh|A method for determining a property of a route location parameter|
    KR101048738B1|2009-01-08|2011-07-14|현대로템 주식회사|Obstacle and Derailment Detection Device|
    CN102310866A|2011-07-01|2012-01-11|长春轨道客车股份有限公司|Motive power steering frame for wide-rail motor train unit|
    CN103303338B|2013-06-19|2015-10-21|北京交通大学|A kind of Detection device for contact-type obstacle of railway vehicle|
    CN103523040B|2013-10-17|2016-08-17|南车株洲电力机车有限公司|A kind of obstacle deflector and a kind of traffic information collection method|JP6499759B2|2015-07-23|2019-04-10|川崎重工業株式会社|Railroad vehicle drainage device|
    AT518142B1|2015-12-16|2021-04-15|Siemens Mobility Austria Gmbh|Rail clearer for a rail vehicle|
    DE102016221512B3|2016-11-03|2018-01-11|Bombardier Transportation Gmbh|Rail vehicle with a protective device and protective device for a rail vehicle|
    DE102016221513B3|2016-11-03|2018-01-11|Bombardier Transportation Gmbh|Rail vehicle with rail clearer and rail cleaner for a rail vehicle|
    CN109305177B|2018-10-26|2020-02-14|中车南京浦镇车辆有限公司|Subway vehicle barrier detection device anti-disengaging structure|
    法律状态:
    2019-09-15| PC| Change of the owner|Owner name: SIEMENS MOBILITY GMBH, AT Effective date: 20190814 |
    2021-12-15| HC| Change of the firm name or firm address|Owner name: SIEMENS MOBILITY AUSTRIA GMBH, AT Effective date: 20211108 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50180/2014A|AT515578B1|2014-03-12|2014-03-12|Device for obstacle detection in rail vehicles|ATA50180/2014A| AT515578B1|2014-03-12|2014-03-12|Device for obstacle detection in rail vehicles|
    EP15708153.0A| EP3116762A1|2014-03-12|2015-02-25|Device for detecting obstacles for rail vehicles|
    RU2016132998A| RU2647094C1|2014-03-12|2015-02-25|Device for recognition of obstacles in railway vehicles|
    CN201580013541.0A| CN106103235B|2014-03-12|2015-02-25|The device of detection barrier for rail vehicle|
    US15/121,303| US10286936B2|2014-03-12|2015-02-25|Device for detecting obstacles for rail vehicles|
    PCT/EP2015/053928| WO2015135752A1|2014-03-12|2015-02-25|Device for detecting obstacles for rail vehicles|
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