• 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 measuring vehicle (1) for detecting the compliance of a track (5), having a machine frame (2) which can be moved on the track (5) supported on two rail carriages (3), with a first measuring system (7) Detecting a vertical distance of the track (5) under load and with a second measuring system (13) for detecting a vertical distance of the track (5) in the absence of load. In this case, the first measuring system is coupled to an evaluation device (11) for calculating the profile of a first vertical arrow height (12), wherein the second measuring system (13) is provided for determining a profile of a second vertical arrow height (14), with a common reference base, with two outer measuring points (15, 16) under load and with an intermediate middle measuring point (17) therebetween without or with a reduced load, and wherein the evaluation device (11) for calculating a depression (19) of the track (5) under load the two arrow heights (12, 14) is set up. Such a track measuring vehicle (1) detects the sinking of the track (5) under load in a single test drive.
    公开号:AT519575A4
    申请号:T51/2017
    申请日:2017-02-15
    公开日:2018-08-15
    发明作者:
    申请人:Plasser & Theurer Export Von Bahnbaumaschinen Gmbh；
    IPC主号:
    专利说明:

    description
    Track measuring vehicle and method for detecting a vertical track position
    TECHNICAL FIELD The invention relates to a track measuring vehicle for detecting the
    Resilience of a track, with a machine frame that can be moved on the track supported by two rail bogies, with a first measuring system for detecting a vertical distance of the track under load and with a second measuring system for detecting a vertical distance of the track when there is no load. In addition, the invention relates to a method for measuring a track by means of the track measuring vehicle.
    PRIOR ART [02] The maintenance of a track is carried out on the basis of geometric sizes. One of these sizes is the vertical track position under load. As a rule, the weight of a track measuring vehicle is used as the load, which travels along the track and thereby detects the vertical track position.
    [03] Another parameter that is used to assess a track condition is the compliance of the track. To record them, the track position with no load must also be measured and compared with the track position under load. This is usually done by two separate measurements.
    [04] A method and a track measuring vehicle are known from DE 102 20 175 C1, with which the flexibility of the track can be detected in one measuring pass. For this purpose, two measuring systems are arranged on the track measuring vehicle. A first measuring system records the relative track position under load with respect to a fixed inertial reference system. A measuring head measuring vertically by means of optical triangulation is tracked in the lateral direction of the rail.
    [05] A second measuring system records the track position without load with respect to the same reference system with another vertically measuring measuring head, the
    2/17 • ···· ····: :: :: :::. :: 1703 · ♦ ·· * β · · ·· ·
    2/12 a system carrier is arranged. Lateral rail tracking must also be carried out in the second measuring system. In addition, movements of the track measuring vehicle must be compensated for using compensation devices and roll angle compensators. Furthermore, complex alignment devices with cameras and light sources are required to align the two measurement systems with one another.
    Summary of the invention [06] The invention is based on the object of a generic one
    Track measuring vehicle and to specify a method with which the flexibility of the track can be determined in a simple manner.
    According to the invention, this object is achieved by the features of
    Claims 1 and 8. Advantageous further developments of the invention result from the dependent claims.
    [08] The first measuring system records a course of a first vertical arrow height under load by means of the known inertial measuring principle or by measuring a vertical axis acceleration, with a true-to-shape measuring signal first being determined. Subsequently, a three-point signal is calculated with respect to a virtual bow eye by means of an evaluation device, which corresponds to the course of the vertical arrow height in the hiking measuring principle (three-point measurement).
    [09] The second measuring system is provided for determining a course of a second vertical arrow height, with a common reference base, with two outer measuring points under load and with an intermediate measuring point with or without a reduced load, the
    Evaluation device for calculating a depression of the track under load from the two arrow heights is set up. The unloaded area of the track between the two rail bogies is included in the measurement of the second arrow height. Together with the first arrow height, this makes it easy to determine the depression under load.
    [10] Such a track measuring vehicle records the compliance of the track under load in a single test run, only the courses of the two
    3/17 • ·
    3/12 vertical arrow heights must be determined. Devices for motion compensation or alignment devices to align the two measuring systems with one another are not required. This enables simple and efficient determination of the sinking of the track with just a few system components.
    [11] A further development provides that the first measuring system is designed as an inertial measuring system and comprises a measuring frame which is attached to one of the rail bogies. In this way, a measuring system already available on modern track measuring vehicles is used to determine the course of the first vertical arrow height of the track under load.
    [12] It is advantageous if an inertial measuring unit and at least two position measuring devices for determining the position of the measuring frame relative to the rails of the track are arranged on the measuring frame. This gives you an exact course of both rails of the track. In order to be able to detect such a course independently of a driving speed of the track measuring vehicle, two spaced-apart position measuring devices are provided per rail.
    In a further variant of the invention, the second measuring system comprises two outer measuring carriages for detecting the track position at the outer measuring points and a middle measuring carriage for detecting the track position at the intermediate measuring point. This provides a robust structure that allows direct detection of the second vertical arrow height.
    [14] Advantageously, at least one measuring chord is tensioned as a reference between the two outer measuring carriages. For example, the distance from a centrally tensioned steel chord to a measuring device of the middle measuring car can be measured in a simple manner as a second vertical arrow height. With a measuring chord over each rail, a vertical arrow height can be determined for each rail.
    [15] In the case of only one measuring chord stretched in the middle, it is advantageous if each measuring carriage is equipped with an elevation measuring device in order to be able to determine its own second vertical arrow height for each rail.
    4.17
    4.12
    This is also beneficial if the machine frame is used as a reference. The distance between the measuring trolleys and the machine frame is measured continuously.
    Another further variant of the invention provides that the second measuring system comprises non-contact distance measuring devices, which are arranged on the machine frame above the three measuring points and measure a respective distance to a rail of the track. Here, the measuring carts are omitted and the machine frame serves as a common reference basis. For this purpose, a particularly rigid machine frame is provided to avoid disturbing vibrations.
    The method according to the invention for measuring a track by means of the track measuring vehicle provides that the first vertical arrow height and the second vertical arrow height are determined with a corresponding chord length and chord division and that the two vertical arrow heights are subtracted to calculate the depression of the track under load , In this way, the determination of the sinking under load can be carried out with little computing effort.
    [18] In a simple form of the method, the first vertical arrow height and the second vertical arrow height are each determined in the middle of the track, an average course of depression of the track being calculated. Such a sinking determination is sufficient in many applications.
    [19] For a more precise analysis of the track quality, it is advantageous if the first vertical arrow height and the second vertical arrow height are determined separately for both rails of the track and if a separate depression curve is calculated for each rail.
    BRIEF DESCRIPTION OF THE DRAWINGS [20] The invention is explained below by way of example with reference to the accompanying figures. In a schematic representation:
    Fig. 1 track measuring vehicle in an oblique view. Fig. 2 diagrams of the vertical track position
    5/17: :: :: :::. :: 1703 • · ·· · · ·· ·· ·
    5/12
    Fig. 3 Determination of the second arrow height by means of measuring carts at a first track position
    Fig. 4 Determination of the second arrow height by means of measuring vehicles at a second track position
    Fig. 5 Determination of the second arrow height by means of distance measuring devices
    DESCRIPTION OF THE EMBODIMENTS [21] FIG. 1 shows a track measuring vehicle 1 with a machine frame 2, which is supported on two rail carriages 3 and can be moved on two rails 4 of a track 5. The rail bogies 3 are designed as bogies. A car body 6 is built on the machine frame 2, with driver's or operator's cabins, drive components and various control and measuring devices.
    [22] A first measuring system 7 is arranged on one of the rail bogies 3. 1, this is a so-called inertial measuring system. Instead, another measuring system can be used, which detects the vertical course of the track 5 under load (e.g. measurement of the axle bearing acceleration).
    The first measuring system 7 comprises a measuring frame 8, which is connected to the axle bearings of the rail running gear 3 and exactly follows the vertical track position. An inertial measuring unit 9 is connected to the measuring frame 8. This measures every movement in relation to a stationary reference system and provides a space curve in the middle of the track and / or two space curves of the inner edges of the rails.
    [24] In order to computationally compensate for lateral relative movements of the rail undercarriage 3 with respect to the track 5, 8 position measuring devices 10 are arranged at four points of the measuring frame (optical gauge measuring system). These continuously measure the distances to the inner edges of the rails 4, two position measuring devices 10 also being sufficient at a minimum measuring speed. The track position in the transverse direction can thus be grasped exactly.
    6/17 • ·: .. :: :::. :: 1703 • · · · · · · · · · ·
    6/12 [25] Measurement data acquired by the first measurement system 7 are available in an evaluation device 11 for calculating the course of a first vertical arrow height 12 of the track position under load. In addition, the results of a second measuring system 13 are fed to the evaluation device 11. This is provided for determining a course of a second vertical arrow height 14.
    As is known, the vertical arrow height 12, 14 is the vertical distance of a track layer or a rail course to a bowstring. The so-called hiking vision measuring principle (three-point measurement) is used, a virtual measuring chord being used as a reference for calculating the first vertical arrow height 12.
    [27] With the second measuring system 13, the track position seen in the longitudinal direction of the track is measured at two outer measuring points 15, 16 under load and at an intermediate measuring point 17 with or without a reduced load. The measurements are carried out with reference to a common reference base in accordance with the determination of the first vertical arrow height 12.
    The second measuring system 13 comprises, for example, a middle measuring carriage 18 suspended from the machine frame 2, which is arranged between the two rail carriages 3 in an unloaded section of the track 5. The middle measuring carriage 18 has a low weight, which is why it can be disregarded. There is also the possibility of providing a weight-compensating suspension of the middle measuring carriage 18, which merely prevents it from being lifted off the rails 4.
    [29] At the two outer measuring points 15, 16, the track 5 is subjected to an approximately equally large load. This is achieved by a uniform weight distribution of the machine frame 2 together with the car body 6 and various facilities on the two
    Rail bogies 3. This results in a characteristic depression 19 under load for a considered point of the track 5, regardless of which rail bogie 3 applies the load.
    7/17 • · • ·
    7/12 [30] FIG. 2 shows diagrams with different vertical track layers 20, 21,
    22, a travel path being shown on the x-axis and a vertical deviation from a completely flat track position on the y-axis. A thin solid line corresponds to an unloaded track layer 20 and a dashed line corresponds to a track slide 21 under load. A thick solid line shows the actual track position 22 while driving with the track measuring vehicle 1. For better illustration, the deviations from a flat track position are greatly exaggerated.
    [31] In the upper diagram, track 5 is still unused, which is why the unloaded track position 20 corresponds to the actual track position 22. The three diagrams below show a chronological sequence when driving on track 5. The loads on track 5 are due to the
    Rail carriages 3 shown by means of the same point loads 23. This assumption is also based on the calculation of the course of the first arrow height 12 by means of the evaluation device 11.
    FIGS. 3 to 5 show the geometric relationships in detail, three measuring carriages 18, 24, 25 being provided as components of the second measuring system 13 in FIGS. 3 and 4. In addition to the middle measuring carriage 18, there are two outer measuring carriages 24, 25 which are arranged in the immediate vicinity of the rail carriages 3 and thus in loaded sections of the track 5. A respective arrangement of the outer measuring carriages 24, 25 between the axes of a rail bogie 3 designed as a bogie also represents a sensible variant.
    [33] A measuring chord 26 is stretched between the two outer measuring carriages 24, 25. Alternatively, the machine frame 2 can serve as a common reference base, which is designed to be correspondingly rigid. In addition, distance measuring devices for detecting the distances between the machine frame 2 and the individual measuring carriages 18, 24, 25 are required.
    [34] In the example shown, there is a symmetrical division of the tendons. The middle measuring carriage 18 is therefore at the same distance 27 from the two outer measuring carriages 24, 25. However, an asymmetrical division of the tendon is also possible. Sufficient is to be observed
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    1703
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    Distance of the middle measuring carriage 18 to the two outer measuring carriages 24, 25, so that there is no influence of the loaded track sections on the middle measuring carriage 18.
    [35] While the track 5 is being traveled by the track measuring vehicle 1, the second vertical arrow height 14 is continuously measured by means of this second measuring system 13. Specifically, this is the vertical deviation of the middle measuring carriage 18 from the measuring chord 26 compared to an arrangement with a completely flat track position. In a simple form, an arrow height measurement is carried out in the middle of the track. However, the vertical arrow heights of the respective rail 4 can also be measured. Then either a separate measuring chord 26 is stretched over each rail 4 or each measuring carriage 18, 24, 25 comprises an elevation measuring device (inclinometer) in order to infer the longitudinal heights of the rails 4 from a height in the middle of the track.
    [36] The evaluation device 11 is used to calculate the first vertical arrow height 12 from the stored track position data of the first measuring system 7. A virtual reference basis is used which delivers corresponding results to the second measuring system 13. For example, this is a virtual measuring chord 28 which connects the outer measuring points 15, 16 and thus runs parallel to the measuring chord 26 of the second measuring system 13.
    [37] The first vertical arrow height 12 thus results as the calculated vertical distance between the virtual measuring chord 28 and the track position point 29, which was recorded during the measuring run by means of the first measuring system 7 at the middle measuring point 17. The depression 19 under load at the middle measuring point 17 thus results as the difference between the first and the second vertical arrow heights 12, 14, the arrow heights 12, 14 being signed.
    3 shows a situation in which the virtual measuring chord 28 runs at the middle measuring point 17 between unloaded and loaded track 5. Then the two arrow heights 12, 14 have different signs and the subtraction leads to a summation of the absolute values of both arrow heights 12, 14. The situation is different in FIG. 4, where both
    9/17 • · • · · ·
    1703
    9.12
    Arrow heights 12, 14 indicate an upwardly curved track position. This situation corresponds to the normal case because the vertical arrow heights 12, 14 of a track section are usually significantly larger than a depression 19 under load.
    5 shows a second measuring system 13 without measuring carriages 18, 24, 25. The machine frame 2 serves as a common reference basis for the three-point measurement. A contactless distance measuring device 30 is arranged above each of the three measuring points 15, 16, 17. A distance 31, 32, 33 between a top edge of the rail and the machine frame 2 is thus detected at the three measuring points 15, 16, 17.
    [40] In a simple form, only the distances 31, 32, 33 to a rail 4 are determined. To determine a depression 19 of both rails 4 or in the middle of the track, however, 4 distance measurements must be carried out for both rails. The second vertical arrow height 14 at the central measuring point 17 can be calculated in a simple manner from the detected distances 31, 32, 33 by means of the evaluation device 11. Specifically, the difference between the average distance 33 and an average of the two outer distances 31, 32 is determined. By filtering the output signals of the distance measuring devices 30, disruptive vibrations of the machine frame 2 can also be eliminated.
    [41] The first vertical arrow height 12 is calculated, as described for FIG. 3, from the stored measured values of the first measuring system 7 with respect to a virtual measuring eye 28.
    [42] For most applications, it is negligible if, in order to determine the second arrow height 14, the two outer measuring points 15 are not exactly at the points with the greatest depression. This is the case if the outer measuring carriages 24, 25 are arranged in front of or behind the loaded rail bogies 3. In any case, hollow positions of the track 5 can be detected reliably.
    [43] In order to be able to precisely determine the depression of the track 5 in a further development of the invention, calculation parameters of the track 5 (e.g. bed number or bedding module) are stored in a memory of the evaluation device 11. Based on the captured
    10/17 • ········ · · ········ · · ········ ··: 1703
    10/12
    Resilience or a bending line of the track 5 is then carried out by means of the known method from Zimmermann, a calculation of the maximum depression below the rail trolley 3.
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    11/12
    权利要求:
    Claims (12)
    [1]
    claims
    1. Track measuring vehicle (1) for detecting the flexibility of a track (5), with a machine frame (2), which is supported on two rail bogies (3) supported on the track (5), with a first measuring system (7) for detecting a Vertical distance of the track (5) under load and with a second measuring system (13) for detecting a vertical distance of the track (5) when there is no load, characterized in that the first measuring system with a
    An evaluation device (11) for calculating the course of a first vertical arrow height (12) is coupled to the second measuring system (13) for determining a course of a second vertical arrow height (14), with a common reference base, with two outer measuring points (15 , 16) under load and with an intermediate middle measuring point (17) without or with reduced load, and that the evaluation device (11) for calculating a depression (19) of the track (5) under load from the two arrow heights (12, 14) is set up.
    [2]
    2. Track measuring vehicle (1) according to claim 1, characterized in that the first measuring system (7) is designed as an inertial measuring system and comprises a measuring frame (8) which is attached to one of the rail bogies (3).
    [3]
    3. track measuring vehicle (1) according to claim 2, characterized in that on the measuring frame (8) an inertial measuring unit (9) and at least two position measuring devices (10) for determining the position of the measuring frame (8) relative to the rails (4) of the Track (5) are arranged.
    [4]
    4. Track measuring vehicle (1) according to one of claims 1 to 3, characterized in that the second measuring system (13) has two outer measuring carriages (24, 25) for detecting the track position at the outer measuring points (15, 16) and a middle measuring carriage ( 18) for detecting the track position at the intermediate measuring point (17).
    12/17 ·· • · · ·· · ··· ·
    1703
    [5]
    5. track measuring vehicle (1) according to claim 4, characterized in that as a reference base between the two outer measuring carriages (24, 25) at least one
    Chord (26) is tensioned.
    12/12
    [6]
    6. Track measuring vehicle (1) according to claim 4 or 5, characterized in that each measuring carriage (24, 25) is equipped with a canting measuring device.
    [7]
    7. Track measuring vehicle (1) according to one of claims 1 to 3, characterized in that the second measuring system (13) comprises non-contact distance measuring devices (30) which are arranged on the machine frame (2) above the three measuring points (15, 16, 17) and measure a respective distance to a rail (4) of the track (5).
    [8]
    8. A method for measuring a track (5) by means of a track measuring vehicle (1) according to one of claims 1 to 7, characterized in that the first vertical arrow height (12) and the second vertical arrow height (14) with a matching chord length and chord division and that the two vertical arrow heights (12, 14) for calculating the depression (19) of the track (5) are subtracted under load.
    [9]
    9. The method according to claim 8, characterized in that the first vertical arrow height (12) and the second vertical arrow height (14) are each determined in the middle of the track and that an average depression course of the track (5) is calculated.
    [10]
    10. The method according to claim 8 or 9, characterized in that the first vertical arrow height (12) and the second vertical arrow height (14) for both rails (4) of the track (5) are determined separately and that for each rail (4th ) a course of sinking is calculated.
    13/17
    1703 ·· ·· • »·« • · · «
    I «· ·« ·· ···· • · »· * • ·· · ·» · · · ί · · · ·· · * ·· ··
    2.2
    15/17 • · • ·
    Α 51/2017 1703
    [11]
    11/12
    Amended claims
    1. Track measuring vehicle (1) for detecting the flexibility of a track (5) in a measurement run, with only one machine frame (2), which is supported on the track (5) by two rail bogies (3), with a first measuring system (7 ) for detecting a vertical distance of the track (5) under load and with a second measuring system (13) for detecting a vertical distance for the track (5) when there is no load, characterized in that the first measuring system (7) is designed as an inertial measuring system and a measuring frame (8), which is attached to one of the rail bogies (3), that the first measuring system is coupled to an evaluation device (11) for calculating the course of a first vertical arrow height (12), that the second measuring system (13) for determining a A second vertical arrow height (14) is provided, with a common reference base, with two outer measuring points (15, 16) under load and with an intermediate mi Intermediate measuring point (17) without or with a reduced load, and that the evaluation device (11) is set up to calculate a depression (19) of the track (5) under load from the two arrow heights (12, 14).
    2. Track measuring vehicle (1) according to claim 1, characterized in that on the measuring frame (8) an inertial measuring unit (9) and at least two position measuring devices (10) for determining the position of the measuring frame (8) relative to the rails (4) of the Track (5) are arranged.
    3. Track measuring vehicle (1) according to claim 1 or 2, characterized in that the second measuring system (13) two outer measuring carriages (24, 25) for detecting the track position at the outer measuring points (15, 16) and a middle measuring carriage (18) for detecting the track position at the intermediate measuring point (17).
    4. Track measuring vehicle (1) according to claim 3, characterized in that at least one measuring chord (26) is stretched as a reference base between the two outer measuring carriages (24, 25).
    16 z 17 [LAST CLAIMS)
    Α 51/2017
    1703
    [12]
    12/12
    5. track measuring vehicle (1) according to claim 3 or 4, characterized in that each measuring carriage (24, 25) is equipped with a canting measuring device.
    6. Track measuring vehicle (1) according to claim 1 or 2, characterized in that the second measuring system (13) comprises non-contact distance measuring devices (30) which are arranged on the machine frame (2) above the three measuring points (15, 16, 17) and one Measure the respective distance to a rail (4) of the track (5).
    7. A method for measuring a track (5) by means of a track measuring vehicle (1) according to one of claims 1 to 7, characterized in that for determining the two vertical arrow heights (12, 14) only one measurement run is carried out that the first vertical arrow height (12) and the second vertical arrow height (14) are determined with a matching chord length and chord pitch and that the two vertical arrow heights (12, 14) are subtracted to calculate the depression (19) of the track (5) under load.
    8. The method according to claim 7, characterized in that the first vertical arrow height (12) and the second vertical arrow height (14) are each determined in the middle of the track and that an average course of depression of the track (5) is calculated.
    9. The method according to claim 7 or 8, characterized in that the first vertical arrow height (12) and the second vertical arrow height (14) for both rails (4) of the track (5) are determined separately and that for each rail (4th ) a course of sinking is calculated.
    17/1 [LAST CLAIMS ^
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    CN105346561A|2015-12-02|2016-02-24|北京交通大学|Rail turnout disease detection system based on operating vehicle and rail turnout disease detection method based on operating vehicle|CN111101412A|2019-12-31|2020-05-05|中铁十九局集团第二工程有限公司|Method for monitoring settlement and displacement of railway business line|
    法律状态:
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    申请号 | 申请日 | 专利标题
    ATA51/2017A|AT519575B1|2017-02-15|2017-02-15|Track measuring vehicle and method for detecting a vertical track position|ATA51/2017A| AT519575B1|2017-02-15|2017-02-15|Track measuring vehicle and method for detecting a vertical track position|
    US16/483,315| US20190375438A1|2017-02-15|2018-02-01|Track measuring vehicle and method for recording a vertical track position|
    EA201900307A| EA038425B1|2017-02-15|2018-02-01|Track recording vehicle and method for detecting a vertical track level|
    EP18703943.3A| EP3583012A1|2017-02-15|2018-02-01|Track recording vehicle and method for detecting a vertical track level|
    JP2019564583A| JP2020509273A|2017-02-15|2018-02-01|Track inspection vehicle and method for detecting vertical track position|
    PCT/EP2018/052459| WO2018149650A1|2017-02-15|2018-02-01|Track recording vehicle and method for detecting a vertical track level|
    CN201880010961.7A| CN110267861B|2017-02-15|2018-02-01|Rail measuring vehicle and method for recording the position of a vertical rail|
    CA3049004A| CA3049004A1|2017-02-15|2018-02-01|Track recording vehicle and method for detecting a vertical track level|
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