A sensor fixing device for collecting subway vibration data

Abstract

The invention discloses a sensor fixing device for collecting subway vibration data, which relates to the technical field of sensor fixing, including a fixed axis and a connecting rod. The outer side of the connecting rod is symmetrically and movably connected with a hollow disk, and a sensor fixing component is arranged on the hollow disk. The rotation of the rotating disk will drive the bow plate to move in a fan shape, and the fan shape movement of the bow plate will drive the triangular plate to move in a fan shape along the auxiliary rod. The fan shape movement of multiple groups of auxiliary rods can achieve the fixation of the sensor. The outer side of the fixed axis is fixedly connected with a cross plate, and the cross plate and the L-shaped plate are jointly provided with a track-moving component. The track-moving component includes a micro motor, a transmission belt and a driving wheel movably connected to the cross plate and the connecting plate, and an electric telescopic rod and a driven wheel movably connected on the connecting plate. The starting of the micro motor will drive the driving wheel to rotate through the transmission belt, and the starting of the electric telescopic rod will drive the driven wheel to fit with the outer side of the subway track.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor fixing, and in particular to a sensor fixing device for collecting subway vibration data. Background Art

[0002] While urban subways offer convenience, the issue of train-induced vibration has also garnered widespread attention. This vibration not only damages tunnel linings and surrounding rock mass, but also impacts surface subsidence, the stability of surface buildings and structures, and the well-being of urban residents. Subway vibration is a major obstacle to achieving green urban rail transit, aiming for safe and efficient operation, environmental harmony, and sustainable economic development.

[0003] After searching, the invention patent with Chinese patent number CN114279556A discloses a sensor fixing device for collecting subway vibration data. Compared with the existing technology, the invention patent with Chinese patent number CN114279556A is provided with a handle. People can move the device by grasping the handle, so that the device can collect vibrations caused by multiple subways. The valve is rotated and opened by the wheel, so that water can flow down through the pipe into the drainage block. The drainage block discharges the water to reduce dust. The contact block is driven to move outward by the rotating block, so that the contact block contacts the ground. In this way, the stability of the device can be improved.

[0004] However, in actual use of the above-mentioned device, a person grasps the handle to move the device, so that the device can collect vibrations caused by multiple subways. The manual movement method may limit the collection efficiency, especially when data needs to be collected from a large number of different locations. The manual movement method may cause a mismatch between the device and the track, thereby causing the device to detect subway vibrations incorrectly. During the movement, the vibration sensor contacts the sliding sleeve, and the sliding sleeve is not easy to fix the vibration sensor. During the movement, the vibration sensor is easily detached from the inner side of the sliding sleeve. Therefore, it is necessary to propose a sensor fixing device for collecting subway vibration data. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing technology that manual movement may limit the collection efficiency, especially when data needs to be collected from a large number of different locations. Manual operation may cause human errors and low efficiency. During the movement, the vibration sensor is easily detached from the inner side of the sliding sleeve. A sensor fixing device for subway vibration data collection is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A sensor fixing device for collecting vibration data of a subway comprises a fixed shaft and a connecting rod, wherein the fixed shaft and the connecting rod are fixedly connected, a hollow disk is symmetrically and movably connected to the outer side of the connecting rod, and a sensor fixing assembly is provided on the hollow disk, wherein the sensor fixing assembly comprises a rotating disk, an arched plate, a triangular plate and an auxiliary rod movably connected to the hollow disk, the rotation of the rotating disk drives the arched plate to move in a fan shape, and the fan-shaped movement of the arched plate drives the triangular plate to move in a fan shape along the auxiliary rod, and the fan-shaped movement of multiple groups of auxiliary rods can achieve the fixation of the sensor, the outer side of the fixed shaft is fixedly connected to a horizontal plate, the outer side of the horizontal plate is movably connected to an L-shaped plate, and both the horizontal plate and the L-shaped plate are provided with a track-moving assembly, and the track-moving assembly comprises a micro motor, a transmission belt and a driving wheel, the micro motor, the transmission belt and the driving wheel are installed on the horizontal plate or the L-shaped plate, and the L-shaped plate is movably connected to an electric telescopic rod and a driven wheel, and the activation of the micro motor drives the driving wheel to rotate through the transmission belt, and the activation of the electric telescopic rod drives the driven wheel to fit the outer side of the subway track.

[0008] The above technical solution further includes:

[0009] The outer side of the connecting rod is symmetrically fixed with a fixing block, and the fixing block is fixedly connected between one end away from the connecting rod and the hollow disk. There are two groups of fixing blocks. The function of the fixing blocks is to connect the connecting rod and the hollow disk. When the vibration sensor needs to be fixed, the vibration sensor must first be placed on the inner side of the two groups of hollow disks.

[0010] A plurality of fixed rods are fixedly connected to the outer side of the hollow disk, and the plurality of fixed rods are evenly distributed along the circumference of the hollow disk. The side of the hollow disk close to the triangular plate is slidingly connected to the rotating disk. A plurality of sliding grooves are provided inside the rotating disk, and the plurality of sliding grooves are evenly distributed along the circumference of the rotating disk. The outer side of the sliding groove is slidingly connected to the fixed rod. A sliding groove is provided inside the rotating disk. When the rotating disk rotates, the sliding groove contacts the outer side of the fixed rod, and the sliding groove and the fixed rod are slidingly connected.

[0011] A plurality of guide grooves are provided on the outer side of the rotating disk, and a side of the rotating disk close to the triangular plate is movably connected to a plurality of bow plates, an end of the bow plate away from the rotating disk is movably connected to the guide groove, an end of the bow plate away from the rotating disk is movably connected to the triangular plate, and an outer side of the triangular plate is movably connected to an auxiliary rod, and the auxiliary rod serves to connect the hollow disk and the triangular plate. The triangular plate can realize a fan-shaped opening and closing movement under the joint action of the bow plate and the auxiliary rod.

[0012] The outer sides of the two groups of rotating disks are fixedly connected to the toggle rod, the end of the toggle rod close to the fixed axis is fixedly connected to the toggle block, the toggle block and the screw rod are threadedly connected, and the upper part of the hollow disk is fixedly connected to a hollow tube, the size of the screw rod is adapted to the size of the hollow tube, and the rotation of the screw rod will move downward on the inner side of the toggle block, and the downward movement of the screw rod will contact the inner side of the hollow tube.

[0013] The outer side of the fixed axis is fixedly connected to the transverse plate, the outer side of the transverse plate is fixedly connected to a connecting plate, the end of the connecting plate away from the transverse plate is fixedly connected to the L-shaped plate, and the function of the transverse plate is to connect the fixed axis and the L-shaped plate through the connecting plate.

[0014] The side of the horizontal plate and the L-shaped plate away from the electric telescopic rod are fixedly connected to the micro motor, and the side of the horizontal plate and the L-shaped plate away from the electric telescopic rod are fixedly connected to the first U-shaped block. The end of the output shaft of the micro motor is fixedly connected to the first gear, and the end of the first gear away from the micro motor is rotatably connected to the first U-shaped block. The function of the first U-shaped block is to limit the position of the first gear, and the end of the first gear away from the micro motor will rotate inside the first U-shaped block.

[0015] The first gear and the transmission belt are meshed with each other, and the end of the transmission belt away from the first gear is meshed with the second gear. A rotating shaft is fixedly connected to the inner side of the second gear. The side of the horizontal plate and the L-shaped plate close to the electric telescopic rod are fixedly connected to a second U-shaped block. The rotating shaft and the second U-shaped block are rotatably connected. Both ends of the rotating shaft are fixedly connected to the driving wheel. The rotation of the second gear will drive the rotating shaft to rotate, and the rotation of the rotating shaft can drive the driving wheels at both ends to rotate.

[0016] An auxiliary plate is fixedly connected to one side of the L-shaped plate away from the connecting rod, and one end of the auxiliary plate away from the L-shaped plate is fixedly connected to the electric telescopic rod.

[0017] The electric telescopic rod is fixedly connected to a limit rod at one end away from the auxiliary plate, and the limit rod is rotatably connected to the driven wheel at one end away from the electric telescopic rod. The function of the electric telescopic rod is to adjust the distance between the driven wheel and the driving wheel so that it can adapt to the subway track.

[0018] The present invention has the following beneficial effects:

[0019] 1. In the present invention, by providing a sensor fixing assembly, the rotation of the rotating disk will drive the bow plate to move in a fan shape, and the fan-shaped movement of the bow plate will drive the triangular plate to move in a fan shape along the auxiliary rod. The fan-shaped movement of multiple sets of triangular plates can fix the sensor, and can ensure the stability of the sensor during the data acquisition process. The rotation and fixation of multiple sets of triangular plates avoids the disadvantage that the vibration sensor is easily detached from the inner side of the sliding sleeve during movement.

[0020] 2. In the present invention, by setting up a track-moving component, the activation of the micro motor will drive the driving wheel to rotate through the transmission belt, and the activation of the electric telescopic rod will drive the driven wheel to fit into the outer side of the subway track. The driven wheel and the driving wheel can drive the vibration sensor to move along the subway track, thereby avoiding manual movement for data collection and enabling data collection at different positions, greatly improving the detection efficiency and reducing detection errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a sensor fixing device for collecting subway vibration data proposed by the present invention;

[0022] Figure 2 This is a schematic side view of the overall structure of a sensor fixing device for collecting subway vibration data proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the overall top view of a sensor fixing device for collecting subway vibration data proposed by the present invention;

[0024] Figure 4 Schematic diagram of the internal structure of the sensor fixing assembly in the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the sensor fixing assembly of the present invention;

[0026] Figure 6 for Figure 1 A schematic diagram of the structure at center A;

[0027] Figure 7 for Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0028] Figure 8 for Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0029] In the figure: 1. fixed axis; 2. connecting rod; 3. fixed block; 4. hollow disk; 5. fixed rod; 6. rotating disk; 7. sliding groove; 8. arched plate; 9. guide groove; 10. triangular plate; 11. auxiliary rod; 12. toggle rod; 13. toggle block; 14. screw rod; 15. hollow tube; 16. cross plate; 17. connecting plate; 18. L-shaped plate; 19. first U-shaped block; 20. micro motor; 21. first gear; 22. transmission belt; 23. second gear; 24. rotating shaft; 25. second U-shaped block; 26. driving wheel; 27. auxiliary plate; 28. electric telescopic rod; 29. ​​limit rod; 30. driven wheel. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figures 1-8 As shown, the present invention proposes a sensor fixing device for collecting subway vibration data, including a fixed axis 1 and a connecting rod 2, the fixed axis 1 and the connecting rod 2 are fixedly connected, the outer side of the connecting rod 2 is symmetrically and movably connected with a hollow disk 4, the hollow disk 4 is provided with a sensor fixing assembly, and the sensor fixing assembly includes a rotating disk 6, an arched plate 8, a triangular plate 10 and an auxiliary rod 11 movably connected to the hollow disk 4, the rotation of the rotating disk 6 will drive the arched plate 8 to move in a fan shape, and the fan-shaped movement of the arched plate 8 will drive the triangular plate 10 to move in a fan shape along the auxiliary rod 11, and the fan-shaped movement of multiple groups of auxiliary rods 11 can realize the sensor. The outer side of the fixed axis 1 is fixedly connected with a transverse plate 16, and the outer side of the transverse plate 16 is movably connected with an L-shaped plate 18. Both the transverse plate 16 and the L-shaped plate 18 are provided with a track-moving component, which includes a micro motor 20, a transmission belt 22 and a driving wheel 26. The micro motor 20, the transmission belt 22 and the driving wheel 26 are installed on the transverse plate 16 or the L-shaped plate 18. The L-shaped plate 18 is movably connected with an electric telescopic rod 28 and a driven wheel 30. The start of the micro motor 20 will drive the driving wheel 26 to rotate through the transmission belt 22, and the start of the electric telescopic rod 28 will drive the driven wheel 30 to fit the outer side of the subway track.

[0033] The outer side of the connecting rod 2 is symmetrically fixed with a fixing block 3, and the fixing block 3 is fixedly connected between the end away from the connecting rod 2 and the hollow disk 4. There are two groups of fixing blocks 3. The function of the fixing block 3 is to connect the connecting rod 2 and the hollow disk 4. When the vibration sensor needs to be fixed, the vibration sensor must be placed on the inner side of the two groups of hollow disks 4 first.

[0034] A plurality of fixing rods 5 are fixedly connected to the outer side of the hollow disk 4, and the plurality of fixing rods 5 are evenly distributed along the circumference of the hollow disk 4. The side of the hollow disk 4 close to the triangular plate 10 is slidingly connected to the rotating disk 6. A plurality of sliding grooves 7 are provided inside the rotating disk 6, and the plurality of sliding grooves 7 are evenly distributed along the circumference of the rotating disk 6. The outer side of the sliding groove 7 is slidingly connected to the fixing rod 5. A sliding groove 7 is provided inside the rotating disk 6. When the rotating disk 6 rotates, the sliding groove 7 contacts the outer side of the fixing rod 5, and the sliding groove 7 and the fixing rod 5 are slidingly connected.

[0035] A plurality of guide grooves 9 are provided on the outer side of the rotating disk 6. The side of the rotating disk 6 close to the triangular plate 10 is movably connected to the plurality of bow plates 8. The end of the bow plate 8 away from the rotating disk 6 is movably connected to the guide groove 9. The end of the bow plate 8 away from the rotating disk 6 is movably connected to the triangular plate 10. The outer side of the triangular plate 10 is movably connected to the auxiliary rod 11. The function of the auxiliary rod 11 is to connect the hollow disk 4 and the triangular plate 10. The triangular plate 10 will realize a fan-shaped opening and closing movement under the joint action of the bow plate 8 and the auxiliary rod 11.

[0036] The outer sides of the two sets of rotating disks 6 are fixedly connected to the toggle rod 12, the end of the toggle rod 12 close to the fixed axis 1 is fixedly connected to the toggle block 13, the toggle block 13 and the screw rod 14 are threadedly connected, and the upper part of the hollow disk 4 is fixedly connected to a hollow tube 15. The size of the screw rod 14 is adapted to the size of the hollow tube 15. The rotation of the screw rod 14 will move downward on the inner side of the toggle block 13, and the downward movement of the screw rod 14 will contact the inner side of the hollow tube 15.

[0037] The outer side of the fixed axis 1 is fixedly connected to the transverse plate 16, and the outer side of the transverse plate 16 is fixedly connected to a connecting plate 17. The end of the connecting plate 17 away from the transverse plate 16 is fixedly connected to the L-shaped plate 18. The function of the transverse plate 16 is to connect the fixed axis 1 and connect the L-shaped plate 18 through the connecting plate 17.

[0038] The rotation of the rotating disk 6 drives the arched plate 8 to move in a fan shape, and the fan-shaped movement of the arched plate 8 drives the triangular plate 10 to move in a fan shape along the auxiliary rod 11. The fan-shaped movement of multiple groups of auxiliary rods 11 can fix the sensor, which can ensure the stability of the sensor during data acquisition. The specific implementation method is that the fixed axis 1 and the connecting rod 2 mainly play the role of mutual connection. The number of fixed blocks 3 is two groups. The function of the fixed block 3 is to connect the connecting rod 2 and the hollow disk 4. When the vibration sensor needs to be fixed, the vibration sensor must be placed on the inner side of the two groups of hollow disks 4 first, and the toggle rod 12 is toggled. The movement of the toggle rod 12 will simultaneously drive the rotating disk 6 to rotate. A sliding groove 7 is provided inside the rotating disk 6. When the rotating disk 6 rotates, the sliding groove 7 will contact the outer side of the fixed rod 5. The sliding groove 7 and the fixed rod 5 are slidably connected. The rotating disk 6 will make a circular motion. The circular motion of the rotating disk 6 will drive the arched plate 8 to move, and the end of the arched plate 8 away from the rotating disk 6 will be inside the guide groove 9. When sliding sideways, the arched plate 8 will move in a fan shape along the guide groove 9. The end of the arched plate 8 close to the guide groove 9 is movably connected to the triangular plate 10. The fan-shaped movement of the arched plate 8 along the guide groove 9 will drive the triangular plate 10 to move in a fan shape. The auxiliary rod 11 serves to connect the hollow disk 4 and the triangular plate 10. The triangular plate 10 will realize the fan-shaped opening and closing movement under the joint action of the arched plate 8 and the auxiliary rod 11. The number of triangular plates 10 is multiple groups, and multiple triangular plates 10 perform the fan-shaped opening and closing movement at the same time, which can adjust the inner space of the hollow disk 4. The vibration sensor on the side is fixed. When the toggle rod 12 is toggled to fix the vibration sensor, the screw rod 14 needs to be rotated. Since the screw rod 14 and the toggle block 13 are threadedly connected, the rotation of the screw rod 14 will move downward on the inner side of the toggle block 13. The downward movement of the screw rod 14 will contact the inner side of the hollow tube 15, thereby fixing the rotating disk 6. The rotation and fixation of multiple sets of triangular plates 10 avoids the disadvantage that the vibration sensor is easily detached from the inner side of the sliding sleeve during the movement.

[0039] Example 2

[0040] like Figures 1-8 As shown, based on the first embodiment, the side of the horizontal plate 16 and the L-shaped plate 18 away from the electric telescopic rod 28 are fixedly connected to the micro motor 20, and the side of the horizontal plate 16 and the L-shaped plate 18 away from the electric telescopic rod 28 are fixedly connected to the first U-shaped block 19. The output shaft end of the micro motor 20 is fixedly connected to the first gear 21, and the end of the first gear 21 away from the micro motor 20 is rotatably connected to the first U-shaped block 19. The function of the first U-shaped block 19 is to limit the position of the first gear 21, and the end of the first gear 21 away from the micro motor 20 will rotate inside the first U-shaped block 19.

[0041] The first gear 21 is meshed with the transmission belt 22, and the end of the transmission belt 22 away from the first gear 21 is meshed with the second gear 23. The inner side of the second gear 23 is fixedly connected with a rotating shaft 24. The side of the horizontal plate 16 and the L-shaped plate 18 close to the electric telescopic rod 28 are fixedly connected with a second U-shaped block 25. The rotating shaft 24 and the second U-shaped block 25 are rotatably connected. Both ends of the rotating shaft 24 are fixedly connected to the driving wheel 26. The rotation of the second gear 23 will drive the rotating shaft 24 to rotate, and the rotation of the rotating shaft 24 can drive the driving wheels 26 at both ends to rotate.

[0042] An auxiliary plate 27 is fixedly connected to the side of the L-shaped plate 18 away from the connecting rod 2. The end of the auxiliary plate 27 away from the L-shaped plate 18 is fixedly connected to the electric telescopic rod 28. The end of the electric telescopic rod 28 away from the auxiliary plate 27 is fixedly connected to the limit rod 29. The end of the limit rod 29 away from the electric telescopic rod 28 is rotatably connected to the driven wheel 30. The function of the electric telescopic rod 28 is to adjust the distance between the driven wheel 30 and the driving wheel 26 so that it can adapt to the subway track.

[0043] In this embodiment, the start of the micro motor 20 will drive the driving wheel 26 to rotate through the transmission belt 22, and the start of the electric telescopic rod 28 will drive the driven wheel 30 to fit into the outer side of the subway track. The driven wheel 30 and the driving wheel 26 can drive the vibration sensor to move along the subway track, thereby avoiding manual movement for data collection. The specific implementation method is that the cross plate 16 is used to connect the fixed axis 1 and connect the L-shaped plate 18 through the connecting plate 17. When the subway track is vibrated, it is necessary to start the electric telescopic rod 28, and use the extension and contraction of the electric telescopic rod 28 to drive the limit rod 29 to drive the driven wheel 30 to move, so that the subway track is exactly between the driven wheel 30 and the driving wheel 26. If it needs to be fixed at a certain place at this time, it is necessary to start the electric telescopic rod 28 again, so that the electric telescopic rod 28 drives the driven wheel 30 to closely contact the outer side of the track, so that the entire device can be stopped at this position. When mobile detection is required, The micro motor 20 needs to be started. The start of the micro motor 20 will drive the first gear 21 to rotate. The end of the first gear 21 away from the micro motor 20 will rotate on the inner side of the first U-shaped block 19. The function of the first U-shaped block 19 is to limit the position of the first gear 21. When the first gear 21 rotates, it will drive the transmission belt 22 to transmit. The rotation of the transmission belt 22 will drive the second gear 23 to rotate. The rotation of the second gear 23 will drive the rotating shaft 24 to rotate. The rotation of the rotating shaft 24 can drive the driving wheels 26 at both ends to rotate. The rotation of the driving wheel 26 can realize the parallel movement of the entire device outside the subway track. The function of the second U-shaped block 25 is to limit the position of the rotating shaft 24. The driven wheel 30 and the driving wheel 26 can drive the vibration sensor to move along the subway track, thereby avoiding manual movement for data collection and enabling data collection at different positions.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sensor fixing device for collecting subway vibration data, comprising a fixed axis (1) and a connecting rod (2), characterized in that: The fixed shaft (1) and the connecting rod (2) are fixedly connected, and the outer side of the connecting rod (2) is symmetrically and movably connected with a hollow disk (4). A sensor fixing assembly is provided on the hollow disk (4), and the sensor fixing assembly includes a rotating disk (6) movably connected to the hollow disk (4), an arched plate (8), a triangular plate (10) and an auxiliary rod (11). The rotation of the rotating disk (6) drives the arched plate (8) to move in a fan shape, and the fan shape movement of the arched plate (8) drives the triangular plate (10) to move in a fan shape along the auxiliary rod (11). The fan shape movement of multiple groups of auxiliary rods (11) can achieve the fixation of the sensor. The outer side of the fixed shaft (1) is fixedly connected with a transverse plate (16). The outer side of the transverse plate (16) is movably connected to an L-shaped plate (18). Both the transverse plate (16) and the L-shaped plate (18) are provided with a track-moving assembly. The track-moving assembly includes a micro motor (20), a transmission belt (22) and a driving wheel (26). The micro motor (20), the transmission belt (22) and the driving wheel (26) are installed on the transverse plate (16) or the L-shaped plate (18). The L-shaped plate (18) is movably connected to an electric telescopic rod (28) and a driven wheel (30). When the micro motor (20) is started, the driving wheel (26) is driven to rotate through the transmission belt (22). When the electric telescopic rod (28) is started, the driven wheel (30) is driven to fit the outer side of the subway track.

2. A sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: A fixing block (3) is symmetrically fixedly connected to the outer side of the connecting rod (2), and the fixing block (3) is fixedly connected between an end away from the connecting rod (2) and the hollow disk (4).

3. A sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: A plurality of fixing rods (5) are fixedly connected to the outer side of the hollow disk (4), and the plurality of fixing rods (5) are evenly distributed along the circumference of the hollow disk (4). A side of the hollow disk (4) close to the triangular plate (10) is slidably connected to the rotating disk (6). A plurality of sliding grooves (7) are provided inside the rotating disk (6), and the plurality of sliding grooves (7) are evenly distributed along the circumference of the rotating disk (6). The outer sides of the sliding grooves (7) are slidably connected to the fixing rods (5).

4. A sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: A plurality of guide grooves (9) are provided on the outer side of the rotating disk (6); a side of the rotating disk (6) close to the triangular plate (10) is movably connected to a plurality of arched plates (8); an end of the arched plate (8) away from the rotating disk (6) is movably connected to the guide groove (9); an end of the arched plate (8) away from the rotating disk (6) is movably connected to the triangular plate (10); and an outer side of the triangular plate (10) is movably connected to the auxiliary rod (11).

5. A sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: The outer sides of the two groups of rotating disks (6) are fixedly connected to a toggle rod (12), one end of the toggle rod (12) close to the fixed axis (1) is fixedly connected to a toggle block (13), the toggle block (13) and the screw rod (14) are threadedly connected, and a hollow tube (15) is fixedly connected to the upper part of the hollow disk (4), and the size of the screw rod (14) is adapted to the size of the hollow tube (15).

6. A sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: The outer side of the fixed shaft (1) is fixedly connected to the transverse plate (16), the outer side of the transverse plate (16) is fixedly connected to a connecting plate (17), and one end of the connecting plate (17) away from the transverse plate (16) is fixedly connected to the L-shaped plate (18).

7. A sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: The sides of the transverse plate (16) and the L-shaped plate (18) away from the electric telescopic rod (28) are fixedly connected to the micro motor (20); the sides of the transverse plate (16) and the L-shaped plate (18) away from the electric telescopic rod (28) are fixedly connected to a first U-shaped block (19); the end of the output shaft of the micro motor (20) is fixedly connected to a first gear (21); and the end of the first gear (21) away from the micro motor (20) is rotatably connected to the first U-shaped block (19).

8. A sensor fixing device for collecting subway vibration data according to claim 7, characterized in that: The first gear (21) is meshed with a transmission belt (22), and an end of the transmission belt (22) away from the first gear (21) is meshed with a second gear (23). A rotating shaft (24) is fixedly connected to the inner side of the second gear (23). A second U-shaped block (25) is fixedly connected to the side of the transverse plate (16) and the L-shaped plate (18) close to the electric telescopic rod (28). The rotating shaft (24) and the second U-shaped block (25) are rotatably connected, and both ends of the rotating shaft (24) are fixedly connected to the driving wheel (26).

9. The sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: An auxiliary plate (27) is fixedly connected to one side of the L-shaped plate (18) away from the connecting rod (2), and an end of the auxiliary plate (27) away from the L-shaped plate (18) is fixedly connected to the electric telescopic rod (28).

10. The sensor fixing device for collecting subway vibration data according to claim 1, characterized in that: One end of the electric telescopic rod (28) away from the auxiliary plate (27) is fixedly connected to a limiting rod (29), and one end of the limiting rod (29) away from the electric telescopic rod (28) is rotatably connected to a driven wheel (30).

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