A detection device for a ballastless track structure layer

Abstract

The present invention discloses a ballastless track structure layer detection device, which includes a rigid frame and a rigid stepped truss; a plurality of groups of roller pairs are provided at the bottom of the rigid frame, and the roller pairs are placed on the ballastless track; an intelligent analysis integration system and a strapdown inertial navigation component are provided on the rigid frame; the rigid stepped trusses are symmetrically arranged on both sides of the rigid frame; several distance sensors are respectively provided on each side of the rigid stepped truss, and the rigid stepped trusses on both sides and any one of the axles are arranged in the same vertical plane; the intelligent analysis integration system is respectively connected to the strapdown inertial navigation component and the distance sensors. The ballastless track structure layer detection device of the present invention has a simple structural form, a wide detection range, is light and flexible, and can be used for synchronous measurement and detection of the vertical relative deformation, vertical absolute deformation and lateral roll angle of the ballastless track structure of high-speed railways from the construction period to the operation period.

Description

Technical Field

[0001] The present invention relates to a ballastless track detection device, and particularly to a detection device for the structural layer of a ballastless track. Background Art

[0002] The ballastless track is a multi-layer structural system. Due to the effects of partial foundation deformation, rainwater, cyclic temperature gradient, etc., vertical relative deformation, vertical absolute deformation, and lateral tilt may occur in each layer of the ballastless track. These residual deformations will ultimately be reflected in the track irregularity, affecting the riding comfort and the health status of the ballastless track. Therefore, many scholars have carried out theoretical, simulation, and experimental studies on the deformation transfer law of the track structural layer, but the research often lacks the support and verification of measured data. Therefore, it is necessary and valuable to carry out the detection of the vertical relative deformation, vertical absolute deformation, and lateral tilt degree of the ballastless track structural layer.

[0003] At present, the maintenance inspection usually focuses on the relative deformation between the structural layers of the ballastless track. The detection devices used mainly include: a ballastless track gap detection trolley equipped with an air-coupled ultrasonic transmitter transducer, a track slab geometric position detection device combining a CPIII control network + a laser tracker, a track slab three-dimensional position detection device using a binocular rangefinder telescope, etc. The detection methods used mainly include: the foundation elevation detection method of the CPIII control network observation pile, the deformation detection method using distributed optical fiber transmission, and the gap detection method based on machine vision. The above detection devices or methods cannot synchronously detect the vertical relative deformation, vertical absolute deformation, and lateral tilt of the track slab and the base slab, and there is room for improvement in terms of detection efficiency and environmental applicability. Summary of the Invention

[0004] The purpose of the present invention is to provide a detection device for the structural layer of a ballastless track. The device has a simple structural form, a wide detection range, is light and flexible, and can be used for synchronous measurement and detection of the vertical relative deformation, vertical absolute deformation, and lateral tilt degree of the high-speed railway ballastless track structure from the construction period to the operation period.

[0005] The purpose of the present invention is to provide a detection device for the structural layer of a ballastless track, including a rigid frame and a rigid stepped truss; wherein, a plurality of groups of roller pairs are arranged at the bottom of the rigid frame, the roller pairs are connected by a wheel axle, and the roller pairs are placed on the ballastless track; an intelligent analysis integration system and a strapdown inertial navigation component are arranged on the rigid frame, and the strapdown inertial navigation component is arranged at the geometric center of the rigid frame; the rigid stepped truss is symmetrically arranged on both sides of the rigid frame; several distance sensors are respectively arranged on each side of the rigid stepped truss, and the rigid stepped trusses on both sides and any one wheel axle are arranged in the same vertical plane; each of the several distance sensors on each side is set to be able to detect the distances from the corresponding side to the upper surface of the track slab, the upper surface of the base slab, and the surface of the subgrade bed.

[0006] The intelligent analysis and integration system is respectively connected to the strapdown inertial navigation component and the ranging sensor.

[0007] For the detection device of the present invention, a strapdown inertial navigation component is used to obtain the real-time geographical coordinates and three-dimensional rotation postures of the vehicle center; the distances from the upper surface of the track slab, the upper surface of the base slab, and the surface layer of the subgrade bed are detected by the ranging sensor. The intelligent analysis and integration system performs calculations and analyses based on the inertial navigation data and the ranging data to simultaneously detect the vertical relative deformation, vertical absolute deformation, and lateral roll angle of the ballastless track structural layer. Preferably, the dimensions of the rigid frame are: length × width × thickness of 2 m × 1.8 m × 0.04 m. More preferably, the intelligent analysis and integration system is fixed to the upper side of the rigid frame through a detachable bracket. The strapdown inertial navigation component is fixed at the geometric center of the lower side of the rigid frame.

[0008] According to a specific embodiment of the present invention, the rigid stepped truss is symmetrically fixed to both sides of the rigid frame by bolts. According to another specific embodiment of the present invention, the stepped crossbeams of the rigid stepped truss are respectively above the track slab, the base slab, and the surface layer of the subgrade bed, and three ranging sensor mounting holes are arranged on each stepped crossbeam.

[0009] For the ballastless track structural layer detection device according to the present invention, preferably, a hand push rod is provided on the rigid frame.

[0010] For the ballastless track structural layer detection device according to the present invention, preferably, a power drive system is provided on the rigid frame, and the power drive system is configured to be able to drive the rotation of the roller pair; the power drive system is connected to the intelligent analysis and integration system.

[0011] For the ballastless track structural layer detection device of the present invention, both a hand push rod and a power drive system are provided on the rigid frame. The detection device can be driven forward on the track in a hybrid manner through the power drive system and the hand push method.

[0012] For the ballastless track structural layer detection device according to the present invention, preferably, the strapdown inertial navigation component includes a three-axis gyroscope and a three-axis accelerometer.

[0013] For the ballastless track structural layer detection device according to the present invention, preferably, at least two sensor mounting holes are provided on each stepped crossbeam of the rigid stepped truss.

[0014] For the ballastless track structural layer detection device according to the present invention, preferably, the intelligent analysis and integration system is a microcomputer or a remote terminal.

[0015] A ballastless track structure layer detection device according to the present invention, preferably, the intelligent analysis integration system includes a hardware operation module, the hardware operation module is connected to the ranging sensor, and the hardware operation module is configured to be able to adjust the angle of the ranging sensor.

[0016] A ballastless track structure layer detection device according to the present invention, preferably, the intelligent analysis integration system further includes a strapdown inertial navigation module, the strapdown inertial navigation module is respectively connected to a strapdown inertial navigation component and a ranging sensor; the strapdown inertial navigation module is configured to be able to calculate strapdown inertial navigation data and ranging data.

[0017] A ballastless track structure layer detection device according to the present invention, preferably, the intelligent analysis integration system further includes a braking module, the braking module is respectively connected to a power drive system, a strapdown inertial navigation component and a ranging sensor; the braking module is configured to be able to control the traveling speed of the detection device and the sampling frequencies of the strapdown inertial navigation component and the ranging sensor.

[0018] A ballastless track structure layer detection device according to the present invention, preferably, the intelligent analysis integration system further includes a data fusion module, the data fusion module is connected to the strapdown inertial navigation module. The data fusion analysis module fuses the inertial navigation calculation data and the distance detection data obtained by the strapdown inertial navigation module, and calculates and analyzes the vertical relative deformation, the vertical absolute deformation amount and the lateral roll angle of the track slab, the base slab and the surface layer of the subgrade bed in the measured section according to the geometric relationship of each rigid component of the detection device.

[0019] The beneficial effects of the present invention are:

[0020] For the ballastless track structure layer detection device of the present invention, the detection device can synchronously detect the vertical relative and absolute deformation amounts and the lateral roll angle of each layer of the ballastless track and the subgrade surface by installing a strapdown inertial navigation component, a ranging sensor and an intelligent integrated analysis system. The measurement and analysis results of the detection device of the present invention for different periods of the same line can achieve continuous measurement, providing data support for the operation and maintenance department to accurately and quickly obtain the vertical relative deformation, the vertical absolute deformation and the roll data of each layer of the ballastless track in the measured section, and to timely formulate effective rectification and maintenance measures. The detection results of this device can serve the scientific research on the deformation transfer law of the ballastless track.

[0021] Furthermore, the measuring device has a simple structure, is light in weight, and has strong function extensibility.

[0022] Still further, the detection space density and time frequency can be regulated, and the detection device can be driven by electricity and pushed manually, and has strong adaptability to the detection environment. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings.

[0024] Figure 1 It is a cross-sectional structure schematic diagram of a ballastless track structure layer detection device;

[0025] Figure 2 It is a side structure schematic diagram of a ballastless track structure layer detection device;

[0026] Figure 3 It is a structure schematic diagram of a rigid stepped truss of a ballastless track structure layer detection device;

[0027] Wherein, 1 - rigid frame, 2 - strapdown inertial navigation component, 3 - ranging sensor, 4 - microcomputer, 5 - rigid stepped truss, 6 - track, 7 - track slab, 8 - base slab, 9 - subgrade, 10 - power drive system, 11 - hand push rod, 12 - roller pair, 13 - axle, 14 - bracket, 15 - stepped cross beam. Specific embodiments

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the following further elaborates on the embodiments of the present invention in detail with reference to specific embodiments and the accompanying drawings.

[0029] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present invention. This will not be elaborated one by one in the subsequent embodiments.

[0030] Embodiment

[0031] As Figures 1 to 3 shown, a ballastless track structure layer detection device of the present invention includes a rigid frame and a rigid stepped truss; the specific structure is as described below

[0032] A rigid frame 1 with a chassis size of length × width × thickness of 2m × 1.8m × 0.04m is adopted. Two sets of roller pairs 12 are provided at the bottom of the rigid frame 1; the rollers between each set of roller pairs 12 are connected by a wheel axle 13. The roller pairs 12 are placed on the ballastless track 6, and the distance between the roller pairs 12 is adjustable to better match the gauge on site; a microcomputer 4 is fixed as an intelligent analysis integration system in the middle of the upper side of the rigid frame 1 through a bracket 14; a strapdown inertial navigation component 2 is provided at the geometric center of the lower side of the rigid frame 1. The strapdown inertial navigation component 2 is arranged at the geometric center of the rigid frame 1. The strapdown inertial navigation component 2 includes a three-axis gyroscope and a three-axis accelerometer;

[0033] Rigid stepped trusses 5 are symmetrically fixed to both sides of the rigid frame 1 by bolts; three stepped crossbeams 15 are respectively provided on each side of the rigid stepped truss 5. Three sensor mounting holes are provided on each stepped crossbeam 15, and ranging sensors 3 are installed in the sensor mounting holes. The rigid stepped trusses 5 on both sides of the rigid frame 1 and the wheel axle 13 on the front side of the rigid frame 1 are arranged in the same vertical plane; the ranging sensors 3 on the three stepped crossbeams 15 on each side of the rigid frame 1 are respectively used to detect the distances from the corresponding side to the upper surface of the track slab 7, the upper surface of the base slab 8, and the surface layer of the subgrade 9;

[0034] A power drive system 10 is provided on the bottom of the rigid frame 1. The power drive system 10 is used to drive the roller pairs 12 to roll. A hand push rod 11 is also provided on the rigid frame 1;

[0035] The microcomputer 4 is provided with a hardware operation module, a strapdown inertial navigation module, a braking module, and a data fusion module; among them, the hardware operation module is connected to the ranging sensor 3, and the hardware operation module is used to adjust the angle of the ranging sensor 3; the strapdown inertial navigation module is respectively connected to the strapdown inertial navigation component 2 and the ranging sensor 3; the strapdown inertial navigation module is used to calculate strapdown inertial navigation data and ranging data; the braking module is respectively connected to the power drive system 10, the strapdown inertial navigation component 2, and the ranging sensor 3; the braking module is used to control the traveling speed of the detection device and the sampling frequencies of the strapdown inertial navigation component 2 and the ranging sensor 3; the data fusion module is connected to the strapdown inertial navigation module. The data fusion analysis module fuses the inertial navigation calculation data and the distance detection data obtained by the strapdown inertial navigation module, and calculates and analyzes the vertical relative deformation, vertical absolute deformation amount, and lateral roll angle of the track slab 7, the base slab 8, and the surface layer of the subgrade 9 of the ballastless track in the measured section according to the geometric relationships of the rigid components of the detection device.

[0036] Before detection, a vehicle-mounted coordinate system is established with the strapdown inertial navigation component as the center point and the length and width directions of the chassis as the axes, and the initial calibration of the strapdown inertial navigation component is carried out. During the detection process, the real-time moving speed of the detection device, the three-dimensional rotation postures and three-dimensional coordinates of the vehicle center and each component are obtained through the analysis of the intelligent analysis integration system. The detection device is moved on the detection track 6 through the power drive system 10 or the hand push rod 11. The strapdown inertial navigation component 2 and the ranging sensor 3 transmit the detected data to the intelligent analysis integration system, and each module is disassembled and analyzed. Finally, the data fusion analysis module calculates and analyzes the inertial navigation solution data and distance detection data obtained by the strapdown inertial navigation module, and calculates and analyzes the vertical relative deformation, vertical absolute deformation amount and lateral roll angle of the track slab, base slab and subgrade surface layer of the ballastless track in the measured section according to the geometric relationship of each rigid component of the detection device.

[0037] It should be particularly noted that each component or step in the above-mentioned various embodiments can be crossed, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable permutations and combinations should also fall within the protection scope of the present invention, and the protection scope of the present invention should not be limited to the above-mentioned embodiments.

[0038] The above are exemplary embodiments disclosed by the present invention. The order of disclosure of the above embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of disclosure of the embodiments of the present invention (including the claims) is limited to these examples. Without departing from the scope defined by the claims, various changes and modifications can be made. The functions, steps, and / or actions of the method claims according to the disclosed embodiments here do not need to be performed in any specific order. In addition, although the elements disclosed in the embodiments of the present invention can be described or claimed in individual form, they can also be understood as plural unless explicitly limited to the singular.

[0039] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A detection device for a ballastless track structure layer, characterized in that, It includes a rigid frame and a rigid stepped truss; among them, a plurality of roller pairs are provided at the bottom of the rigid frame, the roller pairs are connected by a wheel axle, and the roller pairs are placed on the ballastless track; an intelligent analysis integration system and a strapdown inertial navigation component are provided on the rigid frame, and the strapdown inertial navigation component is arranged at the geometric center of the rigid frame; the rigid stepped truss is symmetrically fixed to both sides of the rigid frame by bolts; three-level stepped crossbeams are respectively provided on each side of the rigid stepped truss, and 3 sensor mounting holes are provided on each level of the stepped crossbeam, and ranging sensors are installed in the sensor mounting holes. The rigid stepped trusses on both sides of the rigid frame and the wheel axle on the front side of the rigid frame are arranged in the same vertical plane; the ranging sensors on the three-level stepped crossbeams on each side of the rigid frame are respectively used to detect the distances from the corresponding side to the upper surface of the track slab, the upper surface of the base slab and the surface layer of the subgrade bed; the intelligent analysis integration system is respectively connected to the strapdown inertial navigation component and the ranging sensor.

2. The detection device for a ballastless track structure layer according to claim 1, wherein, A hand push rod is provided on the rigid frame.

3. The detection device for the ballastless track structure layer according to claim 1, wherein A power drive system is provided on the rigid frame, and the power drive system is set to be able to drive the roller pairs to rotate, and the power drive system is connected to the intelligent analysis integration system.

4. The non-ballast track structure layer detection device according to claim 1, characterized in that, The strapdown inertial navigation component includes a three-axis gyroscope and a three-axis accelerometer.

5. The detection device for the ballastless track structure layer according to claim 1, characterized in that, The intelligent analysis integration system is a microcomputer or a remote terminal.

6. An inspection device for a ballastless track structure layer according to any one of claims 3-5, characterized in that, The intelligent analysis integration system includes a hardware operation module, the hardware operation module is connected to the ranging sensor, and the hardware operation module is set to be able to adjust the angle of the ranging sensor.

7. The detection device for the ballastless track structure layer according to claim 6, wherein The intelligent analysis integration system further includes a strapdown inertial navigation module, and the strapdown inertial navigation module is respectively connected to the strapdown inertial navigation component and the ranging sensor; the strapdown inertial navigation module is set to be able to calculate strapdown inertial navigation data and ranging data.

8. The detection device for a ballastless track structure layer according to claim 6, characterized in that, The intelligent analysis integration system further includes a braking module, and the braking module is respectively connected to the power drive system, the strapdown inertial navigation component and the ranging sensor; the braking module is set to be able to control the traveling speed of the detection device and the sampling frequencies of the strapdown inertial navigation component and the ranging sensor.

9. The inspection device for a ballastless track structure layer according to claim 6, characterized in that, The intelligent analysis integration system further includes a data fusion module, and the data fusion module is connected to the strapdown inertial navigation module.

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