Detection device and detection method for safety protection of urban rail transit structure

Abstract

The invention relates to the technical field of urban rail transit structure safety detection, in particular to an urban rail transit structure safety protection detection device and method.The device comprises a variable rail and an inspection vehicle arranged on the variable rail, the variable rail comprises a deformation section and two fixed sections, and the deformation section is connected with the fixed sections; the two fixed sections are connected with the two ends of the deformation section correspondingly and connected with walking vehicles. Meanwhile, the invention discloses a detection method based on the device, and the detection device and the detection method for the safety protection of the urban rail transit structure, the state of the variable rail is adjusted according to the detected object, so that the inspection vehicle on the variable rail is closer to the detected object, the detection precision is improved, and the application range is wide.

Description

Technical Field

[0001] The present invention relates to the technical field of urban rail transit structure safety detection technology, and in particular to a detection device and a detection method for urban rail transit structure safety protection. Background Art

[0002] The subway is a high-speed, high-capacity, electric-powered rail transit system built in cities. Trains operate on fully enclosed lines. Lines within urban areas are typically located in underground tunnels, while lines outside the city are generally located on elevated bridges or on the surface. The subway is a high-density, high-capacity urban rail transit system encompassing various underground and above-ground right-of-way systems within the city. During tunnel operation, tunnels are affected by factors such as groundwater levels, the environment, and vibration disturbances, causing deformation or cracking. Track inspections also require maintenance during subway downtime. Existing technologies employ a large number of sensors deployed within tunnels to monitor tunnel structure safety, but this involves extensive construction and high equipment costs. Existing technologies utilize inspection robots or drones equipped with image acquisition equipment installed on the tracks. However, the tracks are relatively fixed, and the monitoring equipment is also relatively fixed. Due to limited detection range, inspection robots can only inspect tunnel structures or subway tracks. Drones, which perform image acquisition during flight inspections, cannot carry a large amount of other inspection equipment, making comprehensive inspections impossible. Summary of the Invention

[0003] The purpose of the present invention is to provide a detection device and a detection method for urban rail transit structure safety protection to solve the above technical problems.

[0004] To achieve the above-mentioned objectives, the present invention provides a detection device for the safety protection of urban rail transit structures, including a variable track and an inspection vehicle arranged on the variable track. The variable track includes a deformable section and a fixed section. There are two fixed sections, and the two fixed sections are respectively connected to the two ends of the deformable section. Both fixed sections are connected to a traveling vehicle.

[0005] Preferably, the deformation section includes several track monomers hinged at the head and tail, the top of the track monomer is provided with meshing teeth, the bottom of the track monomer is a trapezoidal structure, and the bottom of the trapezoidal structure is provided with a guide groove, the head end of the track monomer is provided with a hinge groove, the tail end of the track monomer is provided with a hinge block, and the hinge block is provided in the hinge groove of the adjacent track monomer.

[0006] Preferably, a first lighting lamp is provided at the bottom of the track unit.

[0007] Preferably, the fixed section is arc-shaped, one end of the fixed section is connected to the track monomers located at both ends of the deformable section through a first steering motor, and the other end of the fixed section is connected to the traveling vehicle through a second steering motor.

[0008] Preferably, the bottom of the traveling vehicle is provided with a traveling wheel and a spacing wheel driven by a motor, and the traveling wheel and the spacing wheel are both mounted on the traveling vehicle through a telescopic support rod.

[0009] Preferably, a second lighting lamp is provided on the top of the inspection vehicle, the inspection vehicle is provided with a driving mechanism and a guide mechanism for driving the inspection vehicle to move, and detection equipment and image acquisition equipment are provided on both sides of the inspection vehicle through a rotating mechanism.

[0010] Preferably, the driving mechanism includes a traveling motor installed on the top of the inspection car, the output end of the traveling motor is connected to the active bevel gear, the active bevel gear is meshed with the driven bevel gear, the driven bevel gear is installed on the transmission shaft, the transmission shaft is rotatably installed in the inspection car, both ends of the transmission shaft are respectively connected to the first bevel gear and the second bevel gear, the first bevel gear is meshed with the third bevel gear installed on the first rotating shaft, the first meshing gear is installed on the first rotating shaft, the second bevel gear is meshed with the fourth bevel gear, the rotating shaft of the fourth bevel gear is installed in the inspection car, a first transmission sprocket is provided on the rotating shaft of the fourth bevel gear, the first transmission sprocket and the second transmission sprocket are connected by a chain, the second transmission sprocket is installed on the second rotating shaft, the second meshing gear is installed on the second rotating shaft, and the first rotating shaft and the second rotating shaft are both installed in the inspection car; The guide mechanism comprises two guide wheels arranged at the bottom of the inspection vehicle, and the guide wheels are arranged in the guide grooves.

[0011] Preferably, the rotating mechanism is a turntable, on which a mounting column for mounting the detection equipment and the image acquisition equipment is provided, a mounting groove is provided on the side of the mounting column, and a limit plate is provided on the top of the mounting column.

[0012] Preferably, the detection equipment and the image acquisition equipment are both provided with mounting blocks through clamps, and the mounting blocks are arranged in mounting grooves. The detection equipment includes a track profile measuring instrument, a rail flaw detector, a geological radar, a crack observation instrument and a wireless temperature measuring instrument.

[0013] A detection method for a detection device for urban rail transit structure safety protection, the specific steps are as follows: Step S1: Determine the detection object, which includes the tunnel and subway track; Step S2: adjusting the state of the deformation segment and the direction of the detection device according to the detection object; When the inspection object is a tunnel, the deformed section in the variable track maintains an arc state, and the geological radar, crack observation instrument, wireless temperature measuring instrument and image acquisition equipment in the inspection equipment are adjusted in direction by a turntable so that they are set relative to the tunnel lining; When the inspection object is a subway track, the corresponding telescopic support rod is controlled to extend and retract, so that the running wheel is separated from the ground and the spacing wheel contacts the ground, and the spacing wheel is started, so that the two traveling vehicles move closer to each other. At the same time, the first steering motor and the second steering motor are started, so that the fixed section and the track monomers at both ends of the deformed section rotate, and the deformed section is converted from an arc state to a straight state. The track profile measuring instrument, rail flaw detector, wireless temperature measuring instrument and image acquisition equipment are adjusted in direction by the turntable so that they are set relative to the subway track. After the adjustment is completed, the corresponding telescopic support rod is controlled to extend and retract, so that the running wheel contacts the ground and the spacing wheel is separated from the ground, so that the traveling vehicle moves axially along the tunnel. Step S3: The traveling vehicle drives the variable track to move intermittently, and the inspection vehicle moves on the variable track according to the set route.

[0014] Therefore, the present invention adopts the above-mentioned detection device and detection method for urban rail transit structure safety protection, which has the following beneficial effects: setting a variable track, setting an inspection vehicle with detection equipment and image acquisition equipment on the variable track, and adjusting the shape of the variable track according to different detection positions, so that the detection equipment and image acquisition equipment are closer to the detection position, improving the detection accuracy, and expanding the detection range.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the variable track of the present invention when it is in an arc-shaped state; Figure 2 This is a structural diagram of the variable track of the present invention when it is in a straight line state; Figure 3 Schematic diagram of the track monomer structure of the present invention; Figure 4 This is a schematic structural diagram of the inspection vehicle of the present invention; Figure 5 Schematic diagram of the driving mechanism structure of the present invention; Figure 6 This is a schematic diagram of the hoop structure of the present invention; Figure 7 It is a schematic diagram of the local structure of the traveling vehicle of the present invention.

[0017] Reference numerals 1. Variable track; 11. Track unit; 111. Meshing teeth; 112. Guide groove; 113. Articulation groove; 114. Articulation block; 115. First lighting lamp; 12. Fixed section; 13. First steering motor; 14. Second steering motor; 2. Inspection vehicle; 21. Second lighting lamp; 22. Driving mechanism; 221. Travel motor; 222. Driving bevel gear; 223. Driven bevel gear; 224. Transmission shaft; 225. First bevel gear; 226. Second bevel gear; 227. First rotating shaft; 22 8. Third bevel gear; 229. First meshing gear; 2210. Fourth bevel gear; 2211. First transmission sprocket; 2212. Second transmission sprocket; 2213. Chain; 2214. Second rotating shaft; 2215. Second meshing gear; 23. Guide wheel; 24. Turntable; 25. Mounting column; 251. Mounting slot; 252. Limiting plate; 26. Hoop; 27. Mounting block; 3. Traveling vehicle; 31. Traveling wheel; 32. Adjustable distance wheel; 33. Telescopic support rod; 4. Tunnel; 5. Subway track. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-Figure 2 As shown, a detection device for the safety protection of urban rail transit structures includes a variable track 1 and an inspection vehicle 2 arranged on the variable track 1. The variable track 1 includes a deformable section and a fixed section 12. Two fixed sections 12 are provided, and the two fixed sections 12 are respectively connected to the two ends of the deformable section. Both fixed sections 12 are connected to a traveling vehicle 3.

[0021] The deformation section includes several track monomers 11 hinged at the end, such as Figure 3As shown, the top of the track monomer 11 is provided with meshing teeth 111, and the bottom of the track monomer 11 is a trapezoidal structure, so that adjacent track monomers 11 are connected as hinges at a certain angle, forming an arc-shaped state as a whole, and a guide groove 112 is provided at the bottom of the trapezoidal structure, the head end of the track monomer 11 is provided with a hinge groove 113, and the tail end of the track monomer 11 is provided with a hinge block 114, and the hinge block 114 is arranged in the hinge groove 113 of the adjacent track monomer 11.

[0022] In this embodiment, first lighting fixtures 115 are installed at the bottom of several track units 11 to illuminate the inspection location during subway track 5 inspection. The first lighting fixtures 115 can be installed based on the actual size and inspection location. The fixed segment 12 is arc-shaped. One end of the fixed segment 12 is connected to the track units 11 at both ends of the deformable segment via a first steering motor 13. The other end of the fixed segment 12 is connected to the traveling vehicle 3 via a second steering motor 14.

[0023] The bottom of the traveling vehicle 3 is provided with a traveling wheel 31 and a distance-adjusting wheel 32 driven by a motor. Figure 7 As shown, the traveling wheel 31 and the spacing wheel 32 are both installed on the traveling vehicle 3 through a telescopic support rod 33, so as to enable the traveling vehicle 3 to travel laterally and axially along the tunnel 4.

[0024] like Figure 4 As shown, a second lighting lamp 21 is provided on the top of the inspection vehicle 2 for illuminating the tunnel 4. The inspection vehicle 2 is provided with a driving mechanism 22 and a guide mechanism for driving the inspection vehicle 2 to move. Detection equipment and image acquisition equipment are provided on both sides of the inspection vehicle 2 through a rotating mechanism. Figure 5As shown, the driving mechanism 22 includes a travel motor 221 installed on the top of the inspection car 2, and the output end of the travel motor 221 is connected to a driving bevel gear 222, and the driving bevel gear 222 is meshed with a driven bevel gear 223, and the driven bevel gear 223 is installed on a transmission shaft 224, and the transmission shaft 224 is rotatably installed in the inspection car 2, and the two ends of the transmission shaft 224 are respectively connected to a first bevel gear 225 and a second bevel gear 226, and the first bevel gear 225 is meshed with a third bevel gear 228 installed on a first rotating shaft 227, and a first meshing gear 229 is installed on the first rotating shaft 227, and the second bevel gear 226 is meshed with a fourth bevel gear 2210, and the fourth bevel gear 2211 is meshed with the fourth bevel gear 2212. The rotating shaft of 210 is installed in the inspection car 2. The rotating shaft of the fourth bevel gear 2210 is provided with a first transmission sprocket 2211. The first transmission sprocket 2211 is connected to the second transmission sprocket 2212 by a chain 2213. The second transmission sprocket 2212 is installed on the second rotating shaft 2214. The second meshing gear 2215 is installed on the second rotating shaft 2214. The first rotating shaft 227 and the second rotating shaft 2214 are both installed in the inspection car 2. The first meshing gear 229 and the second meshing gear 2215 of the inspection car 2 are respectively engaged with the meshing teeth 111 of the two adjacent track monomers 11, so that the inspection car 2 can smoothly pass through the connection between the two track monomers 11. The guide mechanism includes two guide wheels 23 arranged at the bottom of the inspection car 2. The guide wheels 23 are arranged in the guide groove 112 to further limit and guide the inspection car 2, so that the inspection car 2 moves more smoothly. The rotating mechanism is a turntable 24, on which a mounting column 25 for mounting the detection equipment and the image acquisition equipment is provided. A mounting groove 251 is provided on the side of the mounting column 25, and a limit plate 252 is provided on the top of the mounting column 25. Figure 6 As shown, both the detection equipment and the image acquisition equipment are provided with a mounting block 27 via a clamp 26. The mounting block 27 is disposed within a mounting slot 251. The detection equipment includes a track profile measuring instrument, a rail flaw detector, a geological radar, a crack observation instrument, and a wireless temperature measuring instrument. The types and quantities of these instruments can be adjusted according to actual detection needs.

[0025] A detection method for a detection device for urban rail transit structure safety protection, the specific steps are as follows: Step S1: Determine the detection objects, which include the tunnel 4 and the subway track 5.

[0026] Step S2: Adjust the state of the deformation segment and the direction of the detection device according to the detection object.

[0027] When the detection object is tunnel 4, such as Figure 1 As shown, the deformed section in the variable track 1 maintains an arc state, and the geological radar, crack observation instrument, wireless temperature measuring instrument and image acquisition equipment in the detection equipment are adjusted in direction through the turntable 24 so that they are arranged opposite to the lining of the tunnel 4.

[0028] When the detection object is subway track 5, Figure 2 As shown, by controlling the extension and retraction of the corresponding telescopic support rods 33, the running wheels 31 are lifted off the ground, the spacing wheels 32 are in contact with the ground, and the spacing wheels 32 are started, so that the two traveling vehicles 3 approach each other. At the same time, the first steering motor 13 and the second steering motor 14 are started, so that the fixed section 12 and the track monomers 11 at both ends of the deformed section rotate, and the deformed section is transformed from an arc state to a straight state. The track profile measuring instrument, rail flaw detector, wireless temperature measuring instrument and image acquisition equipment are adjusted in direction by the turntable 24 so that they are arranged opposite to the subway track 5. After the adjustment is completed, the extension and retraction of the corresponding telescopic support rods 33 are controlled so that the running wheels 31 are in contact with the ground and the spacing wheels 32 are lifted off the ground, so that the traveling vehicle 3 moves axially along the tunnel 4.

[0029] Step S3: the traveling vehicle 3 drives the variable track 1 to move intermittently, and at the same time the inspection vehicle 2 moves on the variable track 1 according to the set route.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A detection device for urban rail transit structure safety protection, characterized by: It includes a variable track and an inspection vehicle arranged on the variable track. The variable track includes a deformable section and a fixed section. There are two fixed sections, which are respectively connected to the two ends of the deformable section. Both fixed sections are connected to a traveling vehicle.

2. The detection device for urban rail transit structure safety protection according to claim 1, characterized in that: The deformation section includes several track monomers hinged at the head and tail. The top of the track monomer is provided with meshing teeth. The bottom of the track monomer is a trapezoidal structure, and a guide groove is provided at the bottom of the trapezoidal structure. The head end of the track monomer is provided with a hinge groove, and the tail end of the track monomer is provided with a hinge block. The hinge block is provided in the hinge groove of the adjacent track monomer.

3. The detection device for urban rail transit structure safety protection according to claim 2, characterized in that: A first lighting lamp is arranged at the bottom of the track unit.

4. The detection device for urban rail transit structure safety protection according to claim 3, characterized in that: The fixed section is arc-shaped, one end of the fixed section is connected to the track monomers located at both ends of the deformable section through a first steering motor, and the other end of the fixed section is connected to the traveling vehicle through a second steering motor.

5. The detection device for urban rail transit structure safety protection according to claim 4, characterized in that: A traveling wheel and a distance-adjusting wheel driven by a motor are provided at the bottom of the traveling vehicle. The traveling wheel and the distance-adjusting wheel are both installed on the traveling vehicle through a telescopic support rod.

6. The detection device for urban rail transit structure safety protection according to claim 5, characterized in that: A second lighting lamp is arranged on the top of the inspection vehicle. The inspection vehicle is provided with a driving mechanism and a guiding mechanism for driving the inspection vehicle to move. Detection equipment and image acquisition equipment are respectively arranged on both sides of the inspection vehicle through a rotating mechanism.

7. The detection device for urban rail transit structure safety protection according to claim 6, characterized in that: The driving mechanism includes a travel motor installed on the top of the inspection car, the output end of the travel motor is connected to the driving bevel gear, the driving bevel gear is meshed with the driven bevel gear, the driven bevel gear is installed on the transmission shaft, the transmission shaft is rotatably installed in the inspection car, the two ends of the transmission shaft are respectively connected to the first bevel gear and the second bevel gear, the first bevel gear is meshed with the third bevel gear installed on the first rotating shaft, the first meshing gear is installed on the first rotating shaft, the second bevel gear is meshed with the fourth bevel gear, the rotating shaft of the fourth bevel gear is installed in the inspection car, the rotating shaft of the fourth bevel gear is provided with a first transmission sprocket, the first transmission sprocket and the second transmission sprocket are connected by a chain, the second transmission sprocket is installed on the second rotating shaft, the second meshing gear is installed on the second rotating shaft, and the first rotating shaft and the second rotating shaft are both installed in the inspection car; The guide mechanism comprises two guide wheels arranged at the bottom of the inspection vehicle, and the guide wheels are arranged in the guide grooves.

8. The detection device for urban rail transit structure safety protection according to claim 7, characterized in that: The rotating mechanism is a turntable, on which a mounting column for mounting the detection equipment and the image acquisition equipment is provided. A mounting groove is provided on the side of the mounting column, and a limit plate is provided on the top of the mounting column.

9. The detection device for urban rail transit structure safety protection according to claim 8, characterized in that: The detection equipment and image acquisition equipment are both equipped with mounting blocks through clamps, and the mounting blocks are set in the mounting grooves. The detection equipment includes a track profile measuring instrument, a rail flaw detector, a geological radar, a crack observation instrument and a wireless temperature measuring instrument.

10. The detection method of the detection device for urban rail transit structure safety protection according to claim 9, characterized in that: The specific steps are as follows: Step S1: Determine the detection object, which includes the tunnel and subway track; Step S2: adjusting the state of the deformation segment and the direction of the detection device according to the detection object; When the inspection object is a tunnel, the deformed section in the variable track maintains an arc state, and the geological radar, crack observation instrument, wireless temperature measuring instrument and image acquisition equipment in the inspection equipment are adjusted in direction by a turntable so that they are set relative to the tunnel lining; When the inspection object is a subway track, the corresponding telescopic support rod is controlled to extend and retract, so that the running wheel is separated from the ground and the spacing wheel contacts the ground, and the spacing wheel is started, so that the two traveling vehicles move closer to each other. At the same time, the first steering motor and the second steering motor are started, so that the fixed section and the track monomers at both ends of the deformed section rotate, and the deformed section is converted from an arc state to a straight state. The track profile measuring instrument, rail flaw detector, wireless temperature measuring instrument and image acquisition equipment are adjusted in direction by the turntable so that they are set relative to the subway track. After the adjustment is completed, the corresponding telescopic support rod is controlled to extend and retract, so that the running wheel contacts the ground and the spacing wheel is separated from the ground, so that the traveling vehicle moves axially along the tunnel. Step S3: The traveling vehicle drives the variable track to move intermittently, and the inspection vehicle moves on the variable track according to the set route.

Images