A subway station leakage detection device

Abstract

The application relates to the field of leakage detection, in particular to a subway station leakage detection device, which comprises a shell, a groove is formed in the outer surface of the shell, arc-shaped plates are slidably connected in the groove, a connecting shell is arranged on the outer surface of the arc-shaped plate, an incomplete gear is rotatably connected to the inner wall of the connecting shell, universal wheels are arranged on the incomplete gear, an outer ring is arranged outside the shell, a rack is arranged at the bottom of the outer ring, a push plate is arranged at the bottom of the outer ring, a T-shaped connecting column is arranged in the connecting shell, a spherical hinge is arranged on the T-shaped connecting column, and an arc-shaped linkage plate is arranged on the T-shaped connecting column. The subway station leakage detection device can adjust the angle of the moving wheel through the cooperation between the incomplete gear, the universal wheel, the outer ring, the rack, the push plate, the T-shaped connecting column, the spherical hinge and the arc-shaped linkage plate, so that the moving wheel can be separated from the protruding position of the inner wall of the pipeline.

Description

Technical Field

[0001] This invention relates to the field of leakage detection technology, and specifically to a leakage detection device for subway stations. Background Technology

[0002] Subway stations are equipped with drainage systems during construction. A drainage system is a comprehensive system that combines facilities for the collection, transportation, treatment, and discharge of wastewater. However, leakage is a common problem in subway stations, which seriously affects station safety and passengers' normal travel. Therefore, it is necessary to repair the leaks. Before repairing, the leak points need to be detected. Currently, the detection method is generally to use an industrial endoscope to be inserted into the pipe by hand for inspection.

[0003] Since subway drainage pipes are used to discharge various types of wastewater, during long-term use, various deposits and scale will gradually accumulate inside the drainage pipes. These deposits are usually composed of impurities, corrosion products, microorganisms and their metabolites in the water, which will form an adhesion layer on the inner wall of the pipe. The adhesion increases the roughness of the inner wall of the pipe, and at the same time, the adhesion will reduce the effective inner diameter of the pipe.

[0004] When an industrial endoscope with rollers is inserted into a pipe for inspection, the rolling surface of the rollers is adapted to the inner wall of the pipe. If the rollers move to the coating layer on the inner wall of the pipe, the pressure on the rollers increases. As the rollers continue to move forward on the coating layer, the surface of the rollers will wear more and deform faster, which will reduce the performance of the rollers. Furthermore, if the rollers are deformed or have significant surface wear, the camera head will shake as the rollers continue to move, resulting in unclear images. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a subway station leakage detection device to solve the problem that when the moving wheel contacts the protrusion of the pipe, the pressure on the moving wheel will increase, which will easily accelerate the wear and deformation of the moving wheel.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A subway station leakage detection device includes: a camera head, one end of which is equipped with a connecting wire; characterized in that: a shell is installed on the outside of the camera head, the outer surface of the shell has three grooves, each groove has an arc-shaped plate slidably connected inside, and a connecting shell is fixed to the outer surface of each of the three arc-shaped plates; an incomplete gear is rotatably connected to the inner wall of the connecting shell, and a caster wheel is installed on the side of the incomplete gear away from the arc-shaped plate; an outer ring is installed on the outside of the shell, and three sets of racks are installed at the bottom of the outer ring, with the racks meshing with the corresponding incomplete gears; three push plates are fixed to the bottom of the outer ring; and a T-shaped connecting post is provided inside the connecting shell, with the T-shaped connecting post away from the arc-shaped plate. One end of the outer casing is equipped with a spherical hinge, and an arc-shaped linkage plate is fixed on the outer surface of the T-shaped connecting column. When the spherical hinge moves to the scale or protrusion inside the pipe, the spherical hinge can drive the push plate to slide through the arc-shaped linkage plate. The push plate drives the outer ring to rotate counterclockwise around its axis, and the rack drives the incomplete gear to rotate clockwise around its axis, thereby adjusting the angle of the universal wheel. As the camera head moves forward, the universal wheel can drive the outer casing to rotate spirally, thereby disengaging the universal wheel from the scale or protrusion inside the pipe. This prevents the universal wheel from deforming and wearing due to increased pressure when in contact with the protrusion, thus maintaining the performance of the universal wheel.

[0008] The adjustment assembly, mounted on the housing, enables the casters to move within pipes of different diameters.

[0009] Preferably, a plurality of torsion springs are fixed between the bottom of the outer ring and the outer surface of the outer shell, and the plurality of torsion springs are arranged in a ring on the outer surface of the outer shell, and the distance between each pair of the plurality of torsion springs is equal, which is used to limit the outer ring, thereby facilitating the resetting of the outer ring.

[0010] Preferably, the outer surface of the outer shell is fixed with three side blocks, and the distance between each pair of the three side blocks is equal. Each of the three side blocks has an opening, and an outer ring is slidably connected inside the opening. The width of the opening is greater than the diameter of the outer ring. The opening on the side block is used to limit the side block, thereby maintaining the stability of the side block when it rotates.

[0011] Preferably, a first return spring is fixed between the side of the T-shaped connecting post facing the connecting shell and the inner wall of the connecting shell to support the T-shaped connecting post, thereby facilitating the T-shaped connecting post to return to its original position.

[0012] Preferably, a limiting groove is formed on one side wall of the connecting shell, and a limiting slider is slidably connected to the inner wall of the limiting groove. One end of the limiting slider extending into the connecting shell is fixed to the outer wall of the T-shaped connecting column. The limiting slider is used to support the T-shaped connecting column, thereby maintaining the stability of the T-shaped connecting column when sliding. A second return spring is fixed between the side wall of the limiting slider facing the shell and the inner wall of the limiting groove, which is used to support the limiting slider, thereby facilitating the reset of the limiting slider.

[0013] Preferably, the adjustment assembly includes a third return spring mounted on the concave surface of the arc-shaped plate, with one end of the third return spring fixed to the inner wall of the groove. The third return spring is used to support the arc-shaped plate, thereby enabling the arc-shaped plate to return to its original position. A push column is fixed to the concave surface of the arc-shaped plate, and a first linkage plate is fixed to the end of the push column away from the arc-shaped plate. The first linkage plate can push the arc-shaped plate to slide inside the groove, thereby enabling the universal wheel to be adapted to pipes of different diameters for use.

[0014] Preferably, the outer shell has an annular groove that is connected to a recess. A linkage ring is slidably connected inside the annular groove, and the diameter of the linkage ring is smaller than the diameter of the annular groove. The bottom of the linkage ring extends into the interior of the recess. A second linkage plate is fixed to the bottom of the linkage ring, which can push the first linkage plate to slide, thereby facilitating the adjustment of the position of the arc plate. A handheld turntable is fixed to the top of the linkage ring, and an arc-shaped groove is formed on the outer surface of the handheld turntable. The handheld turntable is used to drive the linkage ring to rotate, so that the second linkage plate pushes the first linkage plate, thereby adjusting the position of the arc plate.

[0015] Preferably, the outer shell is provided with a limiting component to limit the movement of the linkage ring, thereby maintaining the stability of the linkage ring during rotation.

[0016] Preferably, the limiting component includes three fixing plates fixed to the top of the outer shell, and the three fixing plates are arranged in a ring on the top of the outer shell, with equal distances between each pair of the three fixing plates. Each of the three fixing plates has a limiting circular hole in the middle, and a limiting T-shaped member is slidably connected inside the limiting circular hole. The end of the limiting T-shaped member facing the connecting shell has an arc-shaped surface. The outer wall of the end of the linkage ring extending from the groove has multiple limiting circular grooves, with equal distances between each pair of the multiple limiting circular grooves. A fourth return spring is fixed between the limiting T-shaped member and the fixing plate. When the linkage ring rotates around its axis, the limiting T-shaped member, the fourth return spring, and the multiple limiting circular grooves can limit the linkage ring, thereby maintaining the stability of the linkage ring.

[0017] Preferably, the incomplete gear is provided with a cleaning component for cleaning the surface of the universal wheel, thereby keeping the universal wheel in close contact with the inner wall of the pipe. An arc-shaped support arm is fixed to the side of the incomplete gear facing the universal wheel, and a cleaning strip is fixed to one end of the arc-shaped support arm. The cleaning strip is located above the universal wheel, and an arc-shaped receiving groove is opened on the side of the cleaning strip facing the universal wheel, with the universal wheel located inside the arc-shaped receiving groove. The cleaning strip is used to clean the surface of the universal wheel, thereby keeping the universal wheel in close contact with the inner wall of the pipe.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The camera head has a housing with a groove on it. Inside the groove is an arc-shaped plate. A connecting shell is fixed to the outer surface of the arc-shaped plate. An incomplete gear is rotatably connected to the inner wall of the connecting shell. A moving wheel is installed on the side of the incomplete gear away from the arc-shaped plate. An outer ring is installed on the outside of the housing. A rack is installed at the bottom of the outer ring. A push plate is fixed at the bottom of the outer ring. A T-shaped connecting post is installed inside the connecting shell. A spherical hinge is installed at the end of the T-shaped connecting post away from the housing. An arc-shaped linkage plate is fixed to the outer surface of the T-shaped connecting post. When the spherical hinge moves to the scale or protrusion inside the pipe, it can drive the push plate to slide through the arc-shaped linkage plate. The push plate drives the outer ring to rotate counterclockwise around its axis. The rack drives the incomplete gear to rotate clockwise around its axis, thereby adjusting the angle of the moving wheel. As the camera head moves forward, the moving wheel can drive the housing to rotate spirally, thereby disengaging the moving wheel from the scale or protrusion inside the pipe. This prevents the moving wheel from deforming and wearing due to increased pressure when it comes into contact with the protrusion, thus maintaining the performance of the moving wheel.

[0020] 2. The distance between the three moving wheels can be adjusted by the adjustment components on the outer casing, so that the three moving wheels can be adapted to the inside of pipes with different diameters, thus facilitating the use of the camera head for testing in pipes with different diameters. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the mobile component of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the driving component of the present invention.

[0024] Figure 4 This is a schematic diagram of the cleaning component of the present invention.

[0025] Figure 5 This is a schematic diagram of the arc-shaped linkage plate of the present invention.

[0026] Figure 6 This is a schematic diagram of the incomplete gear structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the structure of the adjustment component of the present invention.

[0028] Figure 8 This is a schematic diagram of the limiting component of the present invention.

[0029] In the picture:

[0030] 10. Camera lens; 11. Connecting cable;

[0031] 20. Moving component; 21. Housing; 22. Connecting housing; 23. Incomplete gear; 25. Moving wheel; 26. Groove; 27. Curved plate;

[0032] 30. Drive assembly; 31. Outer ring; 32. Rack; 33. Torsion spring; 34. Push plate; 35. T-shaped connecting column; 36. Spherical hinge; 37. Arc-shaped linkage plate; 38. First return spring; 39. Limiting groove; 310. Limiting slider; 311. Second return spring; 312. Side block;

[0033] 40. Adjustment component; 43. Third return spring; 44. First linkage plate; 45. Push column; 46. Second linkage plate; 47. Linkage ring; 48. Handheld turntable;

[0034] 50. Limiting component; 51. Fixing plate; 52. Limiting T-shaped piece; 53. Fourth return spring; 54. Limiting circular groove;

[0035] 60. Cleaning component; 61. Cleaning strip; 62. Arc-shaped support arm. Detailed Implementation

[0036] The following will refer to the attached reference. Figures 1 to 8 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] A subway station leakage detection device, as shown in the attached document. Figures 1-8 As shown, it includes:

[0038] The camera head 10 and the connecting cable 11 are provided. One end of the connecting cable 11 is installed on the camera head 10, which can push the camera head 10 to move inside the pipe, so that the staff can easily check the inside of the pipe through the camera head 10. The camera head 10 is equipped with a moving mechanism.

[0039] refer to Figures 1-6As shown, the moving mechanism includes a moving component 20 and a driving component 30. The moving component 20 is used to move the camera head 10 to observe and inspect the inner wall of the pipe. The driving component 30 can drive the moving component 20 to rotate an angle, thereby maintaining the moving performance of the moving component 20.

[0040] The moving component 20 includes a housing 21 mounted on the camera head 10. The housing 21 is circular in shape, and the camera head 10 is rotatably connected to the inside of the housing 21. Three grooves 26 are formed on the outer surface of the housing 21. The three grooves 26 are arranged in a ring on the outer surface of the housing 21, and the distance between each pair of the three grooves 26 is equal. An arc plate 27 is slidably connected inside each of the three grooves 26, and a connecting shell 22 is fixed on the outer surface of each of the three arc plates 27.

[0041] The connecting shell 22 has a first opening on the side facing the arc plate 27, and a second opening on the side away from the arc plate 27. An incomplete gear 23 is rotatably connected to the inner wall of the connecting shell 22. A movable wheel 25 is installed on the side of the incomplete gear 23 away from the arc plate 27. When the camera head 10 moves inside the pipe, the movable wheel 25 can move along the inner wall of the pipe, thereby preventing the camera head 10 from contacting the inner wall of the pipe and causing wear, and keeping the camera head 10 in the middle of the pipe, so that the staff can observe the condition of the inner wall of the pipe through the camera head 10.

[0042] The drive assembly 30 includes an outer ring 31 mounted on the outside of the housing 21, with the diameter of the outer ring 31 being larger than that of the housing 21. Three sets of racks 32 are mounted on the bottom of the outer ring 31, with equal distances between each pair of racks 32. The racks 32 mesh with corresponding incomplete gears 23. When the outer ring 31 rotates around its axial direction, the outer ring 31 can drive the incomplete gears 23 to rotate through the racks 32, thereby adjusting the angle of the moving wheel 25. Multiple torsion springs 33 are fixed between the bottom of the outer ring 31 and the outer surface of the housing 21, and the multiple torsion springs 33 are arranged in a ring on the outer surface of the housing 21, with equal distances between each pair of torsion springs 33. These springs are used to limit the movement of the outer ring 31, thereby facilitating the reset of the outer ring 31.

[0043] Three side blocks 312 are fixed to the outer surface of the outer shell 21, with equal distances between each pair of the three side blocks 312. Each of the three side blocks 312 has a limiting opening, and an outer ring 31 is slidably connected inside the limiting opening. The width of the limiting opening is greater than the diameter of the outer ring 31. The limiting opening on the side block 312 is used to limit the side block 312, thereby maintaining the stability of the side block 312 during rotation. Three push plates 34 are fixed to the bottom of the outer ring 31, with equal distances between each pair of the three push plates 34. These push plates 34 are used to drive the outer ring 31 to rotate around its axis, thereby facilitating the adjustment of the angle of the moving wheel 25. A T-shaped connecting post 3 is provided inside the connecting shell 22. 5. An arc-shaped linkage plate 37 is fixed on the outer surface of the T-shaped connecting post 35, and the arc surface of the arc-shaped linkage plate 37 faces the push plate 34. The arc-shaped linkage plate 37 is used to drive the push plate 34 to slide, thereby facilitating the rotation of the outer ring 31 around its axis and adjusting the angle of the moving wheel 25. A spherical hinge 36 is installed at the end of the T-shaped connecting post 35 away from the outer shell 21, which is used to drive the T-shaped connecting post 35 to slide, thereby facilitating the adjustment of the angle of the moving wheel 25. A first return spring 38 is fixed between the side of the T-shaped connecting post 35 facing the connecting shell 22 and the inner wall of the connecting shell 22, which is used to support the T-shaped connecting post 35, thereby facilitating the reset of the T-shaped connecting post 35.

[0044] A limiting groove 39 is provided on one side wall of the connecting shell 22. A limiting slider 310 is slidably connected to the inner wall of the limiting groove 39. One end of the limiting slider 310 extending into the connecting shell 22 is fixed to the outer wall of the T-shaped connecting post 35. The limiting slider 310 is used to support the T-shaped connecting post 35, thereby maintaining the stability of the T-shaped connecting post 35 when sliding. A second return spring 311 is fixed between the side wall of the limiting slider 310 facing the outer shell 21 and the inner wall of the limiting groove 39, which is used to support the limiting slider 310, thereby facilitating the reset of the limiting slider 310.

[0045] Because the three moving wheels 25 are triangular in shape, and the spherical hinge 36 is positioned opposite the moving wheels 25, when inspecting subway pipes, workers can hold the connecting cable 11 and place the camera head 10 into the pipe to be inspected. At this time, the spherical hinge 36 is located in front of the moving wheels 25. Then, the connecting cable 11 is pushed to slide inside the pipe, and the camera head 10 moves forward inside the pipe, while the three moving wheels 25 move along the inner wall of the pipe. As the camera head 10 moves forward, when the moving wheels 25 move to the surface of scale or protrusions on the inner wall of the pipe, the spherical hinge 36... 6 will first contact the scale surface or protrusion, at which point the spherical hinge 36 will be squeezed. The spherical hinge 36 will drive the T-shaped connecting post 35 to slide into the interior of the connecting shell 22, and the T-shaped connecting post 35 will compress the first return spring 38. Meanwhile, the limiting slider 310 will slide inside the limiting groove 39 and compress the second return spring 311. Since the first end of the arc surface of the arc-shaped linkage plate 37 is far away from the limiting groove 39, and the tail end of the arc surface of the arc-shaped linkage plate 37 is close to the limiting groove 39, and the first end of the arc surface of the arc-shaped linkage plate 37 in the initial position is in contact with the arc surface of the push plate 34.

[0046] When the T-shaped connecting post 35 slides towards the connecting shell 22, the arc surface of the push plate 34 can slide towards the tail end of the arc surface of the arc-shaped linkage plate 37. The push plate 34 will move away from the T-shaped connecting post 35. At this time, the outer ring 31 rotates counterclockwise around its axis, and the rack 32 of the outer ring 31 will drive the corresponding incomplete gear 23 to rotate, causing the moving wheel 25 to tilt. As the camera head 10 moves forward, because the moving wheel 25 is tilted, it will move forward in a spiral shape, thus enabling the moving wheel to... When the spherical hinge 36 disengages from the scale or protrusion on the inner wall of the pipe, it is reset by the first return spring 38. At this time, the push plate 34 disengages from the limit of the arc-shaped linkage plate 37, and the torsion spring 33 can drive the outer ring 31 to reset. The moving wheel 25 is then reset to a vertical position, which can prevent the moving wheel 25 from advancing on the protrusion on the inner wall of the pipe and prevent the moving wheel 25 from deforming due to increased pressure when it continues to move on the protrusion.

[0047] refer to Figure 1 , Figure 7 and Figure 8 As shown, the housing 21 is provided with an adjustment component 40, which enables the movable wheel 25 to move inside pipes of different diameters.

[0048] The adjusting assembly 40 includes a third return spring 43 mounted on the concave surface of the arc-shaped plate 27, with one end of the third return spring 43 fixed to the inner wall of the groove 26. The third return spring 43 supports the arc-shaped plate 27, facilitating its reset. A pushing column 45 is fixed to the concave surface of the arc-shaped plate 27, and a first linkage plate 44 is fixed to the end of the pushing column 45 away from the arc-shaped plate 27. The first linkage plate 44 can push the arc-shaped plate 27 to slide inside the groove 26, thus allowing the moving wheel 25 to adapt to pipes of different diameters. An annular groove is provided on the outer casing 21. Furthermore, the annular groove is connected to the groove 26, and a linkage ring 47 is slidably connected inside the annular groove. The diameter of the linkage ring 47 is smaller than the diameter of the annular groove, and the bottom of the linkage ring 47 extends into the interior of the groove 26. A second linkage plate 46 is fixed to the bottom of the linkage ring 47, which can push the first linkage plate 44 to slide, thereby facilitating the adjustment of the position of the arc plate 27. A handheld turntable 48 is fixed to the top of the linkage ring 47, and an arc-shaped groove is formed on the outer surface of the handheld turntable 48. The handheld turntable 48 is used to drive the linkage ring 47 to rotate, thereby adjusting the position of the arc plate 27.

[0049] Since both the first linkage plate 44 and the second linkage plate 46 have curved surfaces, the first end of the curved surface of the second linkage plate 46 is far away from the curved plate 27, and the last end of the curved surface of the second linkage plate 46 is far away from the curved plate 27. The curved surface of the first linkage plate 44 in the initial position is in contact with the first end of the curved surface of the second linkage plate 46. When the curved plate 27 needs to be slid outward, the operator places his finger inside the curved groove and then turns the linkage ring 47, causing the linkage ring 47 to rotate counterclockwise around its axis. At this time, the first linkage plate 44 can slide along the first end of the curved surface of the second linkage plate 46 to its last end, while the second linkage plate 46 can push the first linkage plate 44 to slide outward from the groove 26, which can increase the distance between the three moving wheels 25, thereby making it easier for the moving wheels 25 to adapt to pipes of different diameters.

[0050] refer to Figure 1 and Figure 8 As shown, a limit component 50 is provided on the outer shell 21 to limit the linkage ring 47, thereby maintaining the stability of the linkage ring 47 when it rotates.

[0051] The limiting assembly 50 includes three fixing plates 51 fixed to the top of the housing 21. The three fixing plates 51 are arranged in a ring on the top of the housing 21, and the distance between each pair of the three fixing plates 51 is equal. Each of the three fixing plates 51 has a limiting circular hole in the middle. A limiting T-shaped member 52 is slidably connected inside the limiting circular hole. The end of the limiting T-shaped member 52 facing the connecting housing 22 has an arc-shaped surface. The outer wall of the end of the linkage ring 47 extending out of the groove 26 has multiple limiting circular grooves 54, and the distance between each pair of the multiple limiting circular grooves 54 is equal. The limiting T-shaped member 52, in conjunction with the limiting circular grooves 54, can limit the linkage ring 47, thereby maintaining the stability of the linkage ring 47. A fourth return spring 53 is fixed between the limiting T-shaped member 52 and the fixing plate 51 to support the limiting T-shaped member 52, thereby facilitating the reset of the limiting T-shaped member 52.

[0052] When the linkage ring 47 rotates counterclockwise around its axis, the limiting T-shaped member 52 can disengage from the corresponding limiting circular groove 54. As the linkage ring 47 rotates, the limiting T-shaped member 52 can be inserted into the multiple limiting circular grooves 54 in sequence. When the linkage ring 47 finishes rotating, the limiting T-shaped member 52 can be inserted into the corresponding limiting circular groove 54, thereby limiting the linkage ring 47 and maintaining the stability of the linkage ring 47.

[0053] refer to Figure 4 and Figure 5 As shown, the incomplete gear 23 is provided with a cleaning component 60, which is used to clean the adhering substances on the surface of the moving wheel 25, thereby keeping the moving wheel 25 in close contact with the inner wall of the pipe, and thus maintaining the pressure between the moving wheel 25 and the inner wall of the pipe.

[0054] An arc-shaped support arm 62 is fixed to the side of the incomplete gear 23 facing the moving wheel 25. A cleaning strip 61 is fixed to one end of the arc-shaped support arm 62. The cleaning strip 61 is located above the moving wheel 25. An arc-shaped receiving groove is opened on the side of the cleaning strip 61 facing the moving wheel 25, and the moving wheel 25 is located inside the arc-shaped receiving groove. The cleaning strip 61 is used to clean the surface of the moving wheel 25, thereby keeping the moving wheel 25 in close contact with the inner wall of the pipe.

[0055] When the movable wheel 25 moves inside the pipe, it slides inside the arc-shaped receiving groove, and the cleaning strip 61 can clean the surface of the movable wheel 25, thereby removing the dirt attached to the surface of the movable wheel 25 and maintaining the pressure between the movable wheel 25 and the inside of the pipe.

[0056] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A subway station leakage detection device, comprising: A camera head (10) is provided with a connecting wire (11) at one end. The camera head (10) is characterized by having a housing (21) on its exterior. Three grooves (26) are formed on the outer surface of the housing (21). Arc-shaped plates (27) are slidably connected inside each of the three grooves (26). Connecting shells (22) are fixed to the outer surfaces of the three arc-shaped plates (27). Incomplete gears (23) are rotatably connected to the inner wall of the connecting shells (22). A caster wheel (25) is installed on the side of the incomplete gear (23) away from the arc-shaped plate (27). An outer ring (31) is installed outside the housing (21). Three sets of racks (32) are installed at the bottom of the outer ring (31), and the racks (32) mesh with the corresponding incomplete gears (23). Three push plates (34) are fixed to the bottom of the outer ring (31). A T-shaped connecting post (35) is provided inside the connecting shell (22). A spherical hinge (36) is installed at the end of the connecting post (35) away from the outer shell (21). An arc-shaped linkage plate (37) is fixed on the outer surface of the T-shaped connecting post (35). When the spherical hinge (36) moves to the scale or protrusion inside the pipe, the spherical hinge (36) can drive the push plate (34) to slide through the arc-shaped linkage plate (37). The push plate (34) drives the outer ring (31) to rotate counterclockwise around its axis. The rack (32) drives the incomplete gear (23) to rotate clockwise around its axis, thereby adjusting the angle of the universal wheel (25). As the camera head (10) moves forward, the universal wheel (25) can drive the outer shell (21) to rotate in a spiral, thereby causing the universal wheel (25) to disengage from the scale or protrusion inside the pipe. This can prevent the universal wheel (25) from deforming and wearing due to increased pressure when it contacts the protrusion, thus maintaining the performance of the universal wheel (25). Adjustment component (40), which is mounted on housing (21), enables casters (25) to move inside pipes of different diameters.

2. The subway station leakage detection device according to claim 1, characterized in that, Multiple torsion springs (33) are fixed between the bottom of the outer ring (31) and the outer surface of the outer shell (21). The multiple torsion springs (33) are arranged in a ring on the outer surface of the outer shell (21), and the distance between each pair of multiple torsion springs (33) is equal. They are used to limit the outer ring (31), so as to facilitate the reset of the outer ring (31).

3. The subway station leakage detection device according to claim 1, characterized in that, The outer surface of the outer shell (21) is fixed with three side blocks (312), and the distance between each pair of the three side blocks (312) is equal. Each of the three side blocks (312) has an opening, and the outer ring (31) is slidably connected inside the opening. The width of the opening is greater than the diameter of the outer ring (31). The opening on the side block (312) is used to limit the side block (312) so as to maintain the stability of the side block (312) when it rotates.

4. A subway station leakage detection device according to claim 3, characterized in that, A first return spring (38) is fixed between the side of the T-shaped connecting post (35) facing the connecting shell (22) and the inner wall of the connecting shell (22) to support the T-shaped connecting post (35), thereby facilitating the T-shaped connecting post (35) to return to its original position.

5. A subway station leakage detection device according to claim 1, characterized in that, A limiting groove (39) is provided on one side wall of the connecting shell (22). A limiting slider (310) is slidably connected to the inner wall of the limiting groove (39). One end of the limiting slider (310) extending into the connecting shell (22) is fixed to the outer wall of the T-shaped connecting column (35). The limiting slider (310) is used to support the T-shaped connecting column (35) to maintain the stability of the T-shaped connecting column (35) when sliding. A second return spring (311) is fixed between the side wall of the limiting slider (310) facing the outer shell (21) and the inner wall of the limiting groove (39) to support the limiting slider (310) and facilitate the reset of the limiting slider (310).

6. A subway station leakage detection device according to claim 1, characterized in that, The adjustment assembly (40) includes a third return spring (43) installed on the concave surface of the arc plate (27), and one end of the third return spring (43) is fixed on the inner wall of the groove (26). The third return spring (43) is used to support the arc plate (27), thereby driving the arc plate (27) to return to its original position. A push column (45) is fixed on the concave surface of the arc plate (27). A first linkage plate (44) is fixed on the end of the push column (45) away from the arc plate (27). The first linkage plate (44) can push the arc plate (27) to slide inside the groove (26), thereby enabling the caster wheel (25) to be adapted to pipes of different diameters for use.

7. A subway station leakage detection device according to claim 6, characterized in that, The outer shell (21) has an annular groove, which is connected to the groove (26). A linkage ring (47) is slidably connected inside the annular groove. The diameter of the linkage ring (47) is smaller than the diameter of the annular groove. The bottom of the linkage ring (47) extends into the groove (26). A second linkage plate (46) is fixed to the bottom of the linkage ring (47), which can push the first linkage plate (44) to slide, thereby facilitating the adjustment of the position of the arc plate (27). A hand-held turntable (48) is fixed to the top of the linkage ring (47), and an arc groove is provided on the outer surface of the hand-held turntable (48). The hand-held turntable (48) is used to drive the linkage ring (47) to rotate, so that the second linkage plate (46) pushes the first linkage plate (44), thereby adjusting the position of the arc plate (27).

8. A subway station leakage detection device according to claim 7, characterized in that, The outer shell (21) is provided with a limiting component (50) for limiting the linkage ring (47) to maintain the stability of the linkage ring (47) when it rotates.

9. A subway station leakage detection device according to claim 8, characterized in that, The limiting component (50) includes three fixing plates (51) fixed to the top of the outer shell (21), and the three fixing plates (51) are arranged in a ring on the top of the outer shell (21), and the distance between each pair of the three fixing plates (51) is equal. Each of the three fixing plates (51) is provided with a limiting circular hole in the middle, and a limiting T-shaped member (52) is slidably connected inside the limiting circular hole. The end of the limiting T-shaped member (52) facing the connecting shell (22) has an arc-shaped surface, and the linkage ring (47) extends out a groove (2). 6) has multiple limiting circular grooves (54) on one end of the outer wall, and the distance between each pair of the multiple limiting circular grooves (54) is equal. A fourth return spring (53) is fixed between the limiting T-shaped piece (52) and the fixing plate (51). When the linkage ring (47) rotates around its axis, the linkage ring (47) can be limited by the limiting T-shaped piece (52), the fourth return spring (53) and the multiple limiting circular grooves (54), thereby maintaining the stability of the linkage ring (47).

10. A subway station leakage detection device according to claim 1, characterized in that, The incomplete gear (23) is provided with a cleaning component (60) for cleaning the surface of the caster wheel (25) to keep the caster wheel (25) in close contact with the inner wall of the pipe. An arc-shaped support arm (62) is fixed on the side of the incomplete gear (23) facing the caster wheel (25). A cleaning strip (61) is fixed at one end of the arc-shaped support arm (62). The cleaning strip (61) is located above the caster wheel (25). An arc-shaped receiving groove is opened on the side of the cleaning strip (61) facing the caster wheel (25), and the caster wheel (25) is located inside the arc-shaped receiving groove. The cleaning strip (61) is used to clean the surface of the caster wheel (25) to keep the caster wheel (25) in close contact with the inner wall of the pipe.

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