High-speed railway foundation multi-sensor fusion intelligent detection device and method

Abstract

The application provides a high-speed roadbed multi-sensor fusion intelligent detection device and method, relates to the technical field of roadbed detection, and comprises a detection structure and a pressurizing structure. The detection structure comprises a base, a supporting plate is arranged on the base, a plurality of telescopic rods are arranged between the supporting plate and the base, a first distance sensor is arranged in the telescopic rod, a first bearing plate is arranged in the base, a second bearing plate is arranged in the first bearing plate, a detection rod is arranged in the second bearing plate, a distance monitoring structure is arranged in the base, the distance monitoring structure corresponds to the first bearing plate and the second bearing plate, and the pressurizing structure corresponds to the base and the second bearing plate. In the application, the telescopic rods are arranged between the supporting plate and the base. When continuous detection is carried out after pre-burial, whether the roadbed is settled can be judged by the telescopic distance of the telescopic rods, so that the roadbed can be continuously monitored, and the device is not limited to monitoring the roadbed during construction, thereby expanding the application range of the device.

Description

Technical Field

[0001] This invention relates to the field of roadbed detection technology, specifically to a multi-sensor fusion intelligent detection device and method for high-speed railway roadbeds. Background Technology

[0002] High-speed railway subgrade is the basic structure that supports the fixed track, transmits track gravity and train dynamic forces in high-speed railway engineering, and is a prerequisite for ensuring the safe and stable operation of trains. The subgrade coefficient is the main control index in the compaction quality test of subgrade fill material, reflecting the compressibility of the soil surface under plane pressure. At present, the subgrade coefficient test of high-speed railway subgrade is mainly based on plate load test. Different diameter bearing plates are required for different fill materials, which makes the operation more complicated. Moreover, continuous testing of the subgrade cannot be carried out after construction is completed.

[0003] Therefore, the present invention provides a multi-sensor fusion intelligent detection device and method for high-speed railway subgrades. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a multi-sensor fusion intelligent detection device and method for high-speed railway subgrades, thereby solving the problems mentioned in the background art. This invention can determine whether the subgrade has settled by measuring the extension distance of a telescopic rod, enabling continuous monitoring of the subgrade. This expands the device's applicability beyond monitoring the subgrade during construction. The first and second bearing plates can be selected based on the maximum particle size of the filler material, making the device more flexible and easier to operate, thus improving the efficiency of subgrade detection. Furthermore, the displacement monitoring structure can monitor the displacement between the two detection structures. When settlement occurs, misalignment will occur between the two detection structures, allowing for timely signal transmission and facilitating timely maintenance by personnel to ensure the strength of the subgrade.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-sensor fusion intelligent detection device and method for high-speed railway subgrades, comprising a detection structure and a pressurizing structure. The detection structure includes a base, a support plate mounted on the base, multiple telescopic rods between the support plate and the base, a first distance sensor installed within each telescopic rod, a first bearing plate installed within the base, a second bearing plate installed within the first bearing plate, a detection rod installed within the second bearing plate, a distance monitoring structure installed within the base, the distance monitoring structure corresponding to the first and second bearing plates, a pressing structure mounted on the first bearing plate, the pressing structure corresponding to the base and the second bearing plate, and a pressure structure including a fixed frame mounted on the support plate, a rotating seat rotatably fitted on the fixed frame, a pressing structure mounted on the rotating seat, the pressing structure corresponding to the pressing structure, and a displacement monitoring structure installed between the two detection structures.

[0006] Further, the telescopic rod comprises a first rod body and a second rod body, the first rod body is fixedly connected with the base, the second rod body is fixedly connected with the supporting plate, the first rod body is a hollow structure, the first rod body is slidably connected with the second rod body, a first spring is fixed between the first rod body and the second rod body, a first distance sensor is fixed to the bottom of the first rod body, a first fixing bolt is threadedly connected to one side of the first rod body, and the first fixing bolt corresponds to the second rod body.

[0007] Further, a first groove is formed in the base, the first groove corresponds to the first bearing plate, the distance monitoring structure comprises a second distance sensor and a third distance sensor fixed in the first groove, a plurality of limiting rings are fixed in the first groove, the limiting rings correspond to the first bearing plate, and the second distance sensor corresponds to the first bearing plate.

[0008] Further, a second groove is formed in the first bearing plate, the second groove corresponds to the second bearing plate, a detection ring is arranged on the first bearing plate, a plurality of connecting rods are fixed on the second bearing plate, the connecting rods are fixedly connected with the detection ring, a plurality of through grooves are formed in the second groove, the through grooves correspond to the connecting rods, and the detection ring corresponds to the third distance sensor.

[0009] Further, the pressing structure comprises a first sliding rod fixed on the first bearing plate, the first sliding rod is slidably connected with the base, a first sliding groove is formed in the first sliding rod, and a second sliding rod is fixed on the second bearing plate and corresponds to the first sliding groove.

[0010] Further, a detection groove is formed in the bottom of the second sliding rod, the detection groove is slidably connected with the detection rod, a plurality of third springs are fixed between the detection groove and the detection rod, and a fourth distance sensor is fixed in the detection groove.

[0011] Further, a second sliding groove is formed in the top of the first sliding rod, the second sliding groove is in communication with the first sliding groove, and the pressing structure comprises a pressing plate fixed to the end of the second sliding rod and a plurality of second springs fixed between the pressing plate and the second sliding groove.

[0012] Further, a plurality of second fixing bolts are arranged on one side of the fixing frame and correspond to the rotating seat, and the pressing structure comprises a hydraulic cylinder, and a pressure head is fixed to the output end of the hydraulic cylinder and corresponds to the pressing plate.

[0013] Further, the displacement monitoring structure comprises a pre-buried pipe, a plurality of third grooves are formed in the base, a sliding block is slidably connected in the third grooves, pressure sensors are fixed on both sides in the third grooves, a pull rope is arranged between the two bases and is fixedly connected with the sliding block, and the pull rope corresponds to the pre-buried pipe.

[0014] Highway subgrade multi-sensor fusion intelligent detection method, comprising the following steps:

[0015] S1, connect all sensors to the computer through Bluetooth or data line, place the base on the ground, fix the length of the telescopic rod, fix the fixing frame on the support plate, then start the hydraulic cylinder to press down the first sliding rod, thereby pressing down the first bearing plate, when the settlement, the second distance sensor monitors the displacement of the first bearing plate, then sends the result to the computer, monitors the coefficient of the highway subgrade according to the settlement displacement and the applied pressure;

[0016] S2, rotate the rotating seat, adjust the angle of the pressure head, then start the hydraulic cylinder to press down, so that the lower plate is pressed down, thereby driving the second bearing plate to press down, the displacement of the second bearing plate is monitored by the third distance sensor, then the result is sent to the computer for calculation;

[0017] S3, disassemble the fixing frame, embed the detection structure into the roadbed, continuously detect the pressure and roadbed settlement of the high road through the detection structure, and the computer can give an early warning according to the obtained data;

[0018] S4, monitor the displacement between the two bases through the pull rope between the two bases, when settlement occurs, the pull rope pulls the sliding block to slide, the pressure sensor generates a data signal and transmits it to the computer, and the computer gives an early warning.

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

[0020] 1. The telescopic rod is installed between the support plate and the base, and when continuously detecting after embedding, the telescopic distance of the telescopic rod can be used to judge whether the roadbed is settled, so that the roadbed can be continuously monitored, and the device is not limited to monitoring the roadbed during construction, thereby expanding the application range of the device.

[0021] 2. The second bearing plate is installed in the first bearing plate, and the pressing structure is installed on the first bearing plate, the first bearing plate or the second bearing plate can be pressed down through the pressing structure, so that the first bearing plate and the second bearing plate can be selected and used according to the maximum particle size of the filler, the device is more flexible to use, the device is simple to operate, and the detection efficiency of the roadbed is improved.

[0022] 3. The displacement monitoring structure is installed between the two detection structures, the displacement between the two detection structures can be monitored through the displacement monitoring structure, when settlement occurs, the two detection structures will be misaligned, so that the signal can be transmitted in time, the staff can timely maintenance, and the strength of the roadbed is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1It is the assembly three-dimensional structure schematic drawing of high-speed railway foundation multi-sensor fusion intelligent detection device whole of the application;

[0024] Figure 2 It is the schematic diagram of detection structure and pressure structure in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0025] Figure 3 It is the assembly three-dimensional structure schematic drawing of base, first bearing plate and second bearing plate in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0026] Figure 4 It is the assembly three-dimensional structure schematic drawing of base and support plate in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0027] Figure 5 It is the assembly structure schematic drawing of fixed frame in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0028] Figure 6 It is the exploded view of base, first bearing plate and second bearing plate in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0029] Figure 7 It is the assembly cross-section structure schematic drawing of high-speed railway foundation multi-sensor fusion intelligent detection device whole of the application;

[0030] Figure 8 It is the assembly cross-section structure schematic drawing of pressure structure in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0031] Figure 9 It is the assembly cross-section structure schematic drawing of detection structure in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0032] Figure 10 It is the assembly structure schematic drawing of sliding block and pull rope in the high-speed railway foundation multi-sensor fusion intelligent detection device of the application;

[0033] In the figure: 1, detection structure; 2, base; 3, support plate; 4, telescopic rod; 5, first rod body; 6, second rod body; 7, first spring; 8, first fixed bolt; 9, first distance sensor; 10, first groove; 11, first bearing plate; 12, limiting ring; 13, second distance sensor; 14, third distance sensor; 15, second groove; 16, second bearing plate; 17, through slot; 18, connecting rod; 19, detection ring; 20, first sliding groove; 21, first sliding rod; 22, second spring; 23, second sliding groove; 24, pressing plate; 25, detection groove; 26, detection rod; 27, third spring; 28, fourth distance sensor; 29, second sliding rod; 30, pressure structure; 31, rotating seat; 32, second fixed bolt; 33, hydraulic cylinder; 34, pressure head; 35, fixed frame; 36, pre-buried pipe; 37, third groove; 38, sliding block; 39, pull rope; 40, pressure sensor. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0035] Please refer to Figures 1 to 10 The present application provides a technical solution: a high-speed railway foundation multi-sensor fusion intelligent detection device, which comprises a detection structure 1 and a pressure structure 30. The detection structure 1 comprises a base 2, a support plate 3 is arranged on the base 2, a plurality of telescopic rods 4 are arranged between the support plate 3 and the base 2, a first distance sensor 9 is arranged in the telescopic rod 4, a first bearing plate 11 is arranged in the base 2, a second bearing plate 16 is arranged in the first bearing plate 11, a detection rod 26 is arranged in the second bearing plate 16, a distance monitoring structure is arranged in the base 2, the distance monitoring structure corresponds to the first bearing plate 11 and the second bearing plate 16, a pressing structure is arranged on the first bearing plate 11, the pressing structure corresponds to the base 2 and the second bearing plate 16, the pressure structure 30 comprises a fixed frame 35 arranged on the support plate 3, a rotating seat 31 is rotatably connected to the fixed frame 35, a pressing structure is arranged on the rotating seat 31, the pressing structure corresponds to the pressing structure, and a displacement monitoring structure is arranged between the two detection structures 1.

[0036] In this embodiment, the telescopic rod 4 comprises a first rod body 5 and a second rod body 6, the first rod body 5 is fixedly connected to the base 2, the second rod body 6 is fixedly connected to the support plate 3, the first rod body 5 is a hollow structure, the first rod body 5 is slidably connected to the second rod body 6, a first spring 7 is fixed between the first rod body 5 and the second rod body 6, a first distance sensor 9 is fixed to the bottom of the first rod body 5, a first fixed bolt 8 is threadedly connected to one side of the first rod body 5, and the first fixed bolt 8 corresponds to the second rod body 6.

[0037] Specifically, when the length of the telescopic rod 4 needs to be fixed, slide the support plate 3 up and down, adjust the support plate 3 to the appropriate position, then rotate the first fixing bolt 8 so that the first fixing bolt 8 is inserted into the second rod body 6, thereby fixing the position of the second rod body 6 and fixing the length of the telescopic rod 4, and the fixing frame 35 can be installed, at this time the height of the support plate 3 is fixed, so the stability of the fixing frame 35 can be guaranteed; when continuous detection is needed, the first fixing bolt 8 is disassembled, at this time the position of the support plate 3 can be slid arbitrarily, then the entire detection structure 1 is pre-buried into the roadbed, when the roadbed has settlement, a certain displacement will be generated between the base 2 and the support plate 3, thereby causing the length of the telescopic rod 4 to change, so that the displacement change can be monitored by the first distance sensor 9, thereby facilitating the staff to timely maintenance.

[0038] The base 2 is provided with a first recess 10 corresponding to the first bearing plate 11, and the distance monitoring structure comprises a second distance sensor 13 and a third distance sensor 14 fixed in the first recess 10. A plurality of limiting rings 12 are fixed in the first recess 10 and correspond to the first bearing plate 11. The second distance sensor 13 corresponds to the first bearing plate 11. The first bearing plate 11 is provided with a second recess 15 corresponding to the second bearing plate 16. The first bearing plate 11 is provided with a detection ring 19. The second bearing plate 16 is fixed with a plurality of connecting rods 18. The connecting rods 18 are fixedly connected with the detection ring 19. A plurality of through grooves 17 are formed in the second recess 15 and correspond to the connecting rods 18. The detection ring 19 corresponds to the third distance sensor 14. The pressing structure comprises a first sliding rod 21 fixed on the first bearing plate 11. The first sliding rod 21 is in sliding connection with the base 2. The first sliding rod 21 is provided with a first sliding groove 20. The second bearing plate 16 is fixed with a second sliding rod 29 corresponding to the first sliding groove 20. The fixing frame 35 is provided with a plurality of second fixing bolts 32 on one side. The second fixing bolts 32 correspond to the rotating seat 31. The pressing structure comprises a hydraulic cylinder 33. The output end of the hydraulic cylinder 33 is fixed with a pressure head 34 corresponding to the pressing plate 24. The top of the first sliding rod 21 is provided with a second sliding groove 23 in communication with the first sliding groove 20. The pressing structure comprises a pressing plate 24 fixed to the end of the second sliding rod 29. A plurality of second springs 22 are fixed between the pressing plate 24 and the second sliding groove 23.

[0039] Specifically, when the first bearing plate 11 needs to be used for pressing, the hydraulic cylinder 33 is started, so that the hydraulic cylinder 33 drives the pressure head 34 to press down the first sliding rod 21, thereby pressing down the first bearing plate 11, at this time, the displacement of the first bearing plate 11 is monitored by the second distance sensor 13, that is, the foundation coefficient can be calculated according to the applied pressure and the displacement distance of the first bearing plate 11; for different fillers, the second bearing plate 16 can be used, the rotating seat 31 is manually rotated, and then the pressure head 34 is rotated by ninety degrees, at this time, the pressure head 34 is no longer in contact with the first sliding rod 21, the hydraulic cylinder 33 is started, and the pressure head 34 presses down the pressing plate 24, so that the second sliding rod 29 drives the second bearing plate 16 to press down, at this time, the movement distance of the second bearing plate 16 is monitored by the third distance sensor 14, thereby realizing the detection of the foundation coefficient, so that the device is more flexible to use, and the application range of the device is expanded.

[0040] The bottom of the second sliding rod 29 is provided with a detection groove 25, the detection groove 25 is in sliding connection with a detection rod 26, a plurality of third springs 27 are fixed between the detection groove 25 and the detection rod 26, and a fourth distance sensor 28 is fixed in the detection groove 25.

[0041] Specifically, when the pre-buried pipe 36 enters the roadbed, at this time, the third spring 27 can always apply a certain pressure downward, and when there is pressure downward above, such as when a high-speed railway passes, a better detection effect can be achieved, the displacement of the detection rod 26 is detected by the fourth distance sensor 28, so that the settlement of the roadbed can be continuously monitored, and the accuracy of the monitoring is ensured.

[0042] The displacement monitoring structure comprises a pre-buried pipe 36, a plurality of third grooves 37 are formed in the base 2, a sliding block 38 is in sliding fit in the third grooves 37, pressure sensors 40 are fixed on both sides in the third grooves 37, a pull rope 39 is arranged between the two bases 2, the pull rope 39 is fixedly connected with the sliding block 38, and the pull rope 39 corresponds to the pre-buried pipe 36.

[0043] The two detection structures 1 are pre-buried into different positions, the pre-buried pipe 36 is pre-buried and installed between the two detection structures 1, then the sliding blocks 38 of the two detection structures 1 are connected together through the pull rope 39, the settlement distance of the two detection structures 1 can be monitored, when one of the detection structures 1 settles, the detection structure 1 pulls the pull rope 39, so that the pressure sensors 40 in the two detection structures 1 both generate data, so that the data can be monitored on the computer, thereby the roadbed can be repaired in time to ensure safety.

[0044] The high-speed railway foundation multi-sensor fusion intelligent detection method comprises the following steps:

[0045] S1, all sensors are connected to the computer through Bluetooth or data line, the base 2 is placed on the ground, the length of the telescopic rod 4 is fixed, the fixing frame 35 is fixed on the support plate 3, then the hydraulic cylinder 33 is started, the first sliding rod 21 is pressed down, so that the first bearing plate 11 is pressed down, when the settlement, the second distance sensor 13 monitors the displacement of the first bearing plate 11, then the result is sent to the computer, the coefficient of high railway subgrade is monitored according to the settlement displacement and the applied pressure;

[0046] S2, rotate the rotating seat 31, adjust the angle of the pressure head 34, then start the hydraulic cylinder 33 to press down, so that the lower plate 24 is pressed down, thereby driving the second bearing plate 16 to press down, the displacement of the second bearing plate 16 is monitored by the third distance sensor 14, then the result is sent to the computer for calculation;

[0047] S3, the fixing frame 35 is disassembled, the detection structure 1 is embedded into the roadbed, the pressure and the settlement of the high railway are continuously detected by the detection structure 1, and the computer is warned according to the obtained data;

[0048] S4, the displacement between the two bases 2 is monitored by the pull rope 39 between the two bases 2, when the settlement occurs, the pull rope 39 pulls the sliding block 38 to slide, the pressure sensor 40 generates a data signal and transmits it to the computer, and the computer is warned.

[0049] Work flow: when detecting, the length of telescopic rod 4 is fixed, the upper and lower sliding support plate 3 is adjusted to the appropriate position, then the first fixed bolt 8 is rotated and inserted into the second rod body 6, so that the position of the second rod body 6 is fixed, thereby fixing the length of the telescopic rod 4, and the fixing frame 35 can be installed, at this time the height of the support plate 3 is fixed, so the stability of the fixing frame 35 can be guaranteed, then the hydraulic cylinder 33 is started, the hydraulic cylinder 33 drives the pressure head 34 to press down the first sliding rod 21, thereby pressing down the first bearing plate 11, at this time the displacement of the first bearing plate 11 is monitored by the second distance sensor 13, so that the ground coefficient can be calculated according to the applied pressure and the displacement distance of the first bearing plate 11; for different fillers, the second bearing plate 16 can be used, the rotating seat 31 is manually rotated, and then the pressure head 34 is rotated by ninety degrees, at this time the pressure head 34 is no longer in contact with the first sliding rod 21, the hydraulic cylinder 33 is started, the pressure head 34 presses down the pressing plate 24, so that the second sliding rod 29 is pressed down by the pressing plate 24, at this time the displacement distance of the second bearing plate 16 is monitored by the third distance sensor 14, so that the detection of the ground coefficient is realized; when continuous detection is needed, the first fixed bolt 8 is disassembled, at this time the position of the support plate 3 can be slid arbitrarily, then the whole detection structure 1 is pre-buried into the roadbed, the pre-buried pipe 36 is pre-buried and installed between the two detection structures 1, then the sliding block 38 of the two detection structures 1 is connected together through the pull rope 39, when the roadbed has settlement, at this time a certain displacement will be generated between the base 2 and the support plate 3, thereby causing the length of the telescopic rod 4 to change, so that the displacement change can be monitored by the first distance sensor 9, at this time the third spring 27 can always apply a certain pressure downward, when there is pressure downward above, such as high railway passing, a better detection effect can be achieved, the displacement of the detection rod 26 is detected by the fourth distance sensor 28, so that the continuous monitoring of the settlement of the roadbed can be assisted, when one of the detection structures 1 settles, the detection structure 1 pulls the pull rope 39, thereby causing the pressure sensor 40 in the two detection structures 1 to generate data, so that the data can be monitored on the computer.

[0050] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A high-speed railway foundation multi-sensor fusion intelligent detection device, comprising a detection structure (1) and a pressurizing structure (30), characterized in that, The detection structure (1) comprises a base (2), a supporting plate (3) is arranged on the base (2), a plurality of telescopic rods (4) are arranged between the supporting plate (3) and the base (2), a first distance sensor (9) is arranged in the telescopic rod (4), a first bearing plate (11) is arranged in the base (2), a second bearing plate (16) is arranged in the first bearing plate (11), a detection rod (26) is arranged in the second bearing plate (16), a distance monitoring structure is arranged in the base (2) and corresponds to the first bearing plate (11) and the second bearing plate (16), a pressing structure is arranged on the first bearing plate (11) and corresponds to the base (2) and the second bearing plate (16), the pressing structure (30) comprises a fixing frame (35) arranged on the supporting plate (3), a rotating seat (31) is rotatably connected to the fixing frame (35), a pressing structure is arranged on the rotating seat (31) and corresponds to the pressing structure, and a displacement monitoring structure is arranged between the two detection structures (1). The base (2) is provided with a first groove (10) corresponding to the first bearing plate (11), the distance monitoring structure comprises a second distance sensor (13) and a third distance sensor (14) fixed in the first groove (10), a plurality of limiting rings (12) are fixed in the first groove (10) and correspond to the first bearing plate (11), and the second distance sensor (13) corresponds to the first bearing plate (11). The displacement monitoring structure comprises a pre-buried pipe (36), a plurality of third grooves (37) are formed in the base (2), a sliding block (38) is slidably connected in the third groove (37), a pressure sensor (40) is fixed on both sides of the third groove (37), a pull rope (39) is arranged between the two bases (2) and is fixedly connected with the sliding block (38), and the pull rope (39) corresponds to the pre-buried pipe (36). The pressing structure comprises a first sliding rod (21) fixed on the first bearing plate (11) and slidably connected with the base (2), a first sliding groove (20) is formed in the first sliding rod (21), and a second sliding rod (29) is fixed on the second bearing plate (16) and corresponds to the first sliding groove (20). A second sliding groove (23) is formed in the top of the first sliding rod (21) and communicates with the first sliding groove (20), the pressing structure comprises a pressing plate (24) fixed on the end of the second sliding rod (29), and a plurality of second springs (22) are fixed between the pressing plate (24) and the second sliding groove (23). A plurality of second fixing bolts (32) are arranged on one side of the fixing frame (35) and correspond to the rotating seat (31), the pressing structure comprises a hydraulic cylinder (33), and a pressure head (34) is fixed to the output end of the hydraulic cylinder (33) and corresponds to the pressing plate (24).

2. The high-speed railway foundation multi-sensor fusion intelligent detection device according to claim 1, characterized in that: The telescopic rod (4) comprises a first rod body (5) and a second rod body (6), the first rod body (5) is fixedly connected with the base (2), the second rod body (6) is fixedly connected with the support plate (3), the first rod body (5) is a hollow structure, the first rod body (5) is slidably connected with the second rod body (6), a first spring (7) is fixed between the first rod body (5) and the second rod body (6), a first distance sensor (9) is fixed at the bottom of the first rod body (5), a first fixing bolt (8) is threadedly connected with one side of the first rod body (5), and the first fixing bolt (8) corresponds to the second rod body (6).

3. The high-speed railway foundation multi-sensor fusion intelligent detection device according to claim 1, characterized in that: The first bearing plate (11) is provided with a second groove (15), the second groove (15) corresponds to the second bearing plate (16), the first bearing plate (11) is provided with a detection ring (19), the second bearing plate (16) is fixedly provided with a plurality of connecting rods (18), the connecting rods (18) are fixedly connected with the detection ring (19), the second groove (15) is provided with a plurality of through grooves (17), the through grooves (17) correspond to the connecting rods (18), and the detection ring (19) corresponds to the third distance sensor (14).

4. The high-speed railway foundation multi-sensor fusion intelligent detection device according to claim 1, characterized in that: The bottom of the second sliding rod (29) is provided with a detection groove (25), the detection groove (25) is slidably connected with a detection rod (26), a plurality of third springs (27) are fixed between the detection groove (25) and the detection rod (26), and the detection groove (25) is fixedly provided with a fourth distance sensor (28).

5. A high-speed railway track intelligent detection method based on multi-sensor fusion, characterized in that: The detection device of claim 1 is used for monitoring, comprising the following steps: S1, all sensors are connected with a computer through Bluetooth or a data line, the base is placed on the ground, the length of the telescopic rod is fixed, the fixing frame is fixed on the support plate, then the hydraulic cylinder is started to press down the first sliding rod, so that the first bearing plate is pressed down, when the settlement occurs, the second distance sensor monitors the displacement of the first bearing plate, and then the result is sent to the computer; the coefficient of the high railway roadbed is monitored according to the settlement displacement and the applied pressure; S2, the angle of the pressure head is adjusted by rotating the rotating seat, then the hydraulic cylinder is started to press down, so that the lower pressing plate is pressed down, thereby driving the second bearing plate to be pressed down, the displacement of the second bearing plate is monitored by the third distance sensor, and then the result is sent to the computer for calculation; S3, the fixing frame is disassembled, the detection structure is embedded into the roadbed, the pressure and the roadbed settlement of the high railway are continuously detected through the detection structure, and the computer is used for early warning according to the obtained data; S4, the displacement between the two bases is monitored through the pull rope between the two bases, when the settlement occurs, the pull rope pulls the sliding block to slide, the pressure sensor generates a data signal and transmits the data signal to the computer, and the computer is used for early warning.

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