Railway rail damage detection device

Abstract

The application relates to the technical field of rail detection, and discloses a rail damage detection device, which comprises a rail trolley walking on a rail body, a cleaning assembly is arranged on the rail trolley, and the cleaning assembly comprises a water storage tank. The rail damage detection device is used for providing a clean detection base surface for a multi-angle ultrasonic module. The cleaning assembly is arranged, the assembly cooperates with a water pump to extract cleaning liquid in the water storage tank through a water suction pipe, the cleaning liquid is transported to a plurality of circular pipes through a shunt pipe, a synchronous motor drives a short rod to mesh with a horizontal bevel gear, a driving pulley drives a transmission pulley to rotate through a power belt, then the circular pipes drive the corner brush hairs on the circular ring plate to rotate, the corner brush hairs are attached to the rail surface to clean sundries, the conical blocks on the center thin rod and the guide ring guide the cleaning liquid to be evenly sprayed on the corner brush hairs, so that the brush hairs are kept wet and the cleaning liquid acts on the rail surface.

Description

Technical Field

[0001] This invention relates to the field of rail inspection technology, specifically a rail damage detection device. Background Technology

[0002] As the core load-bearing component of rail transit, rails are subjected to the impact of trains, friction and environmental corrosion over a long period of time, which can easily lead to fatigue crack damage. If this damage is not detected in time, it may cause major safety accidents such as rail breakage and derailment. The role of rail damage detection devices is to achieve accurate identification and early warning of damage.

[0003] The device consists of a multi-source sensing and detection module, a real-time signal processing unit, a high-precision positioning system, an intelligent analysis platform, and a mobile carrier. The mobile carrier drives the sensors to move along the rail. The ultrasonic probe detects internal nuclear damage, the electromagnetic coil identifies surface cracks, and the camera collects external defects. After signal processing, the signals are transmitted to the analysis platform, where the model identifies the damage type and matches the location information.

[0004] However, the aforementioned devices mostly use a single dry brush for cleaning, which cannot remove stubborn oil stains, rust, and fine particles from the rail surface. Debris is easily left on the rail surface, and this debris can block the ultrasonic probe signal, leading to missed damage detection, especially inaccurate detection of tiny cracks inside the rail. In view of this, we propose a rail damage detection device. Summary of the Invention

[0005] The purpose of this invention is to provide a rail damage detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A rail damage detection device includes a rail body, a rail trolley mounted on the rail body, a main unit fixedly installed on the rail trolley, a multi-angle ultrasonic module mounted on the rail trolley, and a cleaning assembly mounted on the rail trolley, the cleaning assembly comprising: A water storage tank is fixedly installed on the rail trolley. A T-shaped support plate is fixedly installed on the water storage tank. A No. 1 water pump is fixedly installed on the T-shaped support plate. A water pumping pipe is fixedly installed at the water pumping end. A diversion pipe is fixedly installed at the water pumping end. An installation plate is fixedly installed on the rail trolley. A hinged frame is hinged to the mounting plate. A bracket is fixedly mounted on the mounting plate. A motor is fixedly mounted on the bracket. One end of a short rod is fixedly mounted on the output end of the motor. A vertical bevel gear is fixedly mounted on the other end of the short rod. A drive pulley is rotatably mounted on the mounting plate. A horizontal bevel gear is fixedly mounted on the drive pulley. A circular tube is rotatably mounted on the hinge frame. A transmission pulley is fixedly mounted on the circular tube. A power belt is installed between the drive pulley and the transmission pulley. A circular ring plate is fixedly mounted on the circular tube. An angular brush bristle is fixedly mounted on the circular ring plate. Multiple sets of thin rods are fixedly mounted at the bottom of the circular ring plate. A conical block is fixedly mounted on the thin rod. A guide ring is fixedly mounted on the conical block.

[0007] In a further embodiment, the articulated frame, bracket, motor, short rod, vertical bevel gear, drive pulley, horizontal bevel gear, round tube, transmission pulley, power belt, annular plate, corner brush, and thin rod are arranged in multiple sets.

[0008] In a further embodiment, the vertical bevel gear meshes with the horizontal bevel gear, a valve is provided on the diversion pipe, a water inlet is provided on the water storage tank, and the pumping pipe is located inside the water storage tank.

[0009] In a further embodiment, the diverter pipe is connected to the internal space of multiple sets of circular pipes, a sealing ring is provided at the joint between the diverter pipe and the circular pipes, the thin rod, the conical block and the guide ring are located directly below the circular pipes, the thin rod, the conical block and the guide ring are located at the center of multiple sets of corner brush bristles, and the multiple sets of corner brush bristles are attached to the surface of the rail body.

[0010] In a further embodiment, the mounting plate is provided with an adjustment assembly, which includes a spring-hydraulic rod hinged between the mounting plate and the hinge frame. The hinge frame has an arc-shaped limiting groove, and the mounting plate has a limiting hole. A small rubber ring is fixedly installed on the hinge frame, and an extrusion plate is placed on the hinge frame. A large rubber ring and a limiting rod are fixedly installed at the bottom of the extrusion plate. A circular plate is placed on the extrusion plate, and a handle is fixedly installed on the top of the circular plate. A threaded rod is fixedly installed at the bottom of the circular plate.

[0011] In a further embodiment, multiple sets of the spring hydraulic rod, arc-shaped limiting groove, limiting hole, small rubber ring, extrusion plate, large rubber ring, limiting rod, circular plate, handle, and threaded rod are provided.

[0012] In a further embodiment, the limiting rod slides through the arc-shaped limiting groove inside the limiting hole, the large rubber ring is attached to the surface of the hinge frame, the small rubber ring is attached to the bottom of the extrusion plate, and the threaded rod passes through the extrusion plate and the hinge frame and is threaded onto the mounting plate.

[0013] In a further embodiment, the rail trolley is equipped with auxiliary components, including a coupling agent water tank fixedly mounted on the rail trolley. A transfer water pump is fixedly mounted on the rail trolley, with a bend fixedly installed between the pump's suction end and the coupling agent water tank. A nozzle is fixedly installed at the pump's outlet end. A square tube is fixedly mounted on the rail trolley, with one end of a spring rod fixedly mounted inside the tube. A block is fixedly mounted at the other end of the spring rod, and a long plate is fixedly mounted on the block. A circular roller is rotatably mounted on the long plate.

[0014] In a further embodiment, the coupling agent tank, the transmission water pump, the bend, the nozzle, the square tube, the spring rod, the block, the long plate, and the circular roller are arranged in multiple sets.

[0015] In a further embodiment, multiple sets of nozzles are positioned above the rail body, the spring rod is positioned inside the square tube, the block slides inside the square tube, multiple sets of rollers are attached to the surface of the rail body, and the multi-angle ultrasonic module is fixedly installed on the long plate. The multi-angle ultrasonic module consists of a 70° ultrasonic probe, a 37° ultrasonic probe, and a 0° ultrasonic probe.

[0016] Compared with the prior art, the present invention provides a rail damage detection device, which has the following beneficial effects: 1. In order to provide a clean detection base for the multi-angle ultrasonic module, the rail damage detection device is equipped with a cleaning component. This component works with a water pump to draw cleaning fluid from the storage tank through a pumping pipe, and delivers it to multiple sets of circular pipes through a diversion pipe. A synchronous motor drives a short rod to drive a vertical bevel gear to mesh with a horizontal bevel gear, so that the drive pulley drives the transmission pulley to rotate through the power belt. This causes the circular pipes to drive the corner brushes on the circular plate to rotate. The corner brushes adhere to the rail surface to clean debris. The conical block on the central thin rod and the guide ring guide the cleaning fluid to be sprayed evenly onto the corner brushes, keeping the brushes moist and carrying the cleaning fluid to act on the rail surface.

[0017] 2. To ensure the continuity and stability of the cleaning process, this rail damage detection device is equipped with an adjustment component. This component, in conjunction with a spring-hydraulic rod, drives the articulated frame to rotate around the mounting plate, adjusting the contact angle between the corner brush bristles and the rail. This adapts to different curved surfaces such as the rail head and rail web. The limiting rod slides along the arc-shaped limiting groove and inserts into the limiting hole to position and adjust the angle. Rotating the handle drives the circular plate to screw the threaded rod into the mounting plate. When the extrusion plate presses down, the large rubber ring and the small rubber ring fit together to form a double seal, preventing the articulated frame from shaking during cleaning. When the rail is worn or deformed, the elastic buffer of the spring-hydraulic rod can adaptively adjust the pressure to prevent excessive wear of the corner brush bristles.

[0018] 3. In order to meet the requirements of rail damage detection, this rail damage detection device is equipped with an auxiliary component. This component works with a water pump to extract couplant from the couplant tank through a curved pipe and spray it evenly onto the cleaned rail surface through a nozzle. The couplant fills the gap between the ultrasonic probe and the rail, preventing air from affecting the detection signal. The spring rod inside the square tube pushes the block to move the long plate downward, so that the roller fits against the rail surface, providing stable support for the multi-angle ultrasonic module. During detection, it remains in contact with the rail trolley as it moves. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the rail trolley frame structure of the present invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a cross-sectional schematic diagram of the water storage tank structure of the present invention; Figure 6 This is a schematic diagram of a portion of the cleaning component of the present invention; Figure 7 This is a schematic diagram of the cleaning component of the present invention from another perspective. Figure 8 This is a schematic diagram of the corner brush bristle structure of the present invention; Figure 9 This is a schematic diagram of the cone-shaped block structure of the present invention; Figure 10 This is a schematic cross-sectional view of part of the structure of the present invention; Figure 11 This is an exploded view of part of the structure of the present invention; Figure 12 This is a cross-sectional schematic diagram of the rail trolley frame structure of the present invention; Figure 13 This is a schematic diagram of the auxiliary component structure of the present invention.

[0020] Explanation of icon numbers: 1. Rail body; 2. Rail trolley; 3. Main unit; 4. Multi-angle ultrasonic module; 5. Cleaning assembly; 51. Water tank; 52. T-shaped support plate; 53. No. 1 water pump; 54. Pumping pipe; 55. Diverter pipe; 56. Mounting plate; 57. Hinge frame; 58. Bracket; 59. Motor; 510. Short rod; 511. Vertical bevel gear; 512. Drive pulley; 513. Horizontal bevel gear; 514. Round pipe; 515. Transmission pulley; 516. Power belt; 517. Circular ring plate; 518. Angle brush bristles; 519. Thin rod; 520. Conical block; 521. Guide ring; 522. Sealing ring; 6. Adjustment assembly; 61. Spring hydraulic rod; 62. Arc-shaped limiting groove; 63. Limiting hole; 64. Small rubber ring; 65. Extrusion plate; 66. Large rubber ring; 67. Limiting rod; 68. Round plate; 69. Handle; 610. Threaded rod; 7. Auxiliary components; 71. Coupling agent tank; 72. Transfer water pump; 73. Bend; 74. Nozzle; 75. Square tube; 76. Spring rod; 77. Block; 78. Long plate; 79. Circular roller. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0023] Please see Figures 1-13 The present invention provides a technical solution: A rail damage detection device includes a rail body 1, a rail trolley 2 mounted on the rail body 1, a main unit 3 fixedly mounted on the rail trolley 2, and a multi-angle ultrasonic module 4 mounted on the rail trolley 2.

[0024] In one embodiment of the present invention, a cleaning assembly 5 is provided on the rail trolley 2. The cleaning assembly 5 includes a water tank 51, which is fixedly installed on the rail trolley 2. A T-shaped support plate 52 is fixedly installed on the water tank 51. A No. 1 water pump 53 is fixedly installed on the T-shaped support plate 52. A water pump pipe 54 is fixedly installed at the water pump 53's water intake end, and a diversion pipe 55 is fixedly installed at the water pump 53's water outlet end. An installation plate 56 is fixedly installed on the rail trolley 2, and a hinged frame 57 is hingedly installed on the installation plate 56. A bracket 5 is fixedly installed on the installation plate 56. 8. A motor 59 is fixedly mounted on the bracket 58. One end of a short rod 510 is fixedly mounted on the output end of the motor 59, and a vertical bevel gear 511 is fixedly mounted on the other end of the short rod 510. A drive pulley 512 is rotatably mounted on the mounting plate 56, and a horizontal bevel gear 513 is fixedly mounted on the drive pulley 512. A round tube 514 is rotatably mounted on the hinge frame 57, and a transmission pulley 515 is fixedly mounted on the round tube 514. A power belt 516 is installed between the drive pulley 512 and the transmission pulley 515. A circular ring is fixedly mounted on the round tube 514. Plate 517, with corner brushes 518 fixedly installed on the annular plate 517. Multiple sets of thin rods 519 are fixedly installed at the bottom of the annular plate 517. Conical blocks 520 are fixedly installed on the thin rods 519, and guide rings 521 are fixedly installed on the conical blocks 520. The structure includes a hinge frame 57, a bracket 58, a motor 59, a short rod 510, a vertical bevel gear 511, a drive pulley 512, a horizontal bevel gear 513, a round tube 514, a transmission pulley 515, a power belt 516, an annular plate 517, corner brushes 518, and multiple sets of thin rods 519. The vertical bevel gear... 511 meshes with the horizontal bevel gear 513. A valve is provided on the diversion pipe 55. A water inlet is provided on the water storage tank 51. A water pumping pipe 54 is located inside the water storage tank 51. The diversion pipe 55 is connected to the internal space of multiple sets of circular pipes 514. A sealing ring 522 is provided at the joint between the diversion pipe 55 and the circular pipe 514. A thin rod 519, a conical block 520, and a guide ring 521 are located directly below the circular pipe 514. The thin rod 519, the conical block 520, and the guide ring 521 are located at the center of multiple sets of corner brushes 518. Multiple sets of corner brushes 518 are attached to the surface of the rail body 1.

[0025] In this embodiment, as the rail trolley 2 moves, the first water pump 53 is simultaneously activated, drawing cleaning fluid from the water tank 51 through the pumping pipe 54. The cleaning fluid is then transported through the diversion pipe 55 to multiple sets of circular pipes 514. The valves on the diversion pipe 55 control the flow rate, while the sealing ring 522 prevents leakage. Simultaneously, multiple sets of motors 59 are activated. The motors 59 drive the short rod 510 to rotate the vertical bevel gear 511. The vertical bevel gear 511 meshes with the horizontal bevel gear 513, causing the drive pulley 512 to rotate. Wheel 512 drives transmission pulley 515 to rotate via power belt 516, which in turn causes round tube 514 to drive the corner brush 518 on ring plate 517 to rotate. The corner brush 518 adheres to the surface of rail body 1 to clean oil, rust and other debris. Cleaning liquid flows out from round tube 514 and is guided by conical block 520 and guide ring 521 on thin rod 519, and is evenly sprayed onto corner brush 518, keeping the brush bristles moist and carrying the cleaning liquid to act on the rail surface, enhancing the cleaning effect, while moistening debris to prevent dust.

[0026] In one embodiment of the present invention, an adjustment assembly 6 is provided on the mounting plate 56. The adjustment assembly 6 includes a spring-hydraulic rod 61, which is hinged between the mounting plate 56 and the hinge frame 57. The hinge frame 57 has an arc-shaped limiting groove 62, and the mounting plate 56 has a limiting hole 63. A small rubber ring 64 is fixedly installed on the hinge frame 57. An extrusion plate 65 is placed on the hinge frame 57. A large rubber ring 66 and a limiting rod 67 are fixedly installed at the bottom of the extrusion plate 65. A circular plate 68 is placed on the extrusion plate 65, and a [missing information - likely a device or component] is fixedly installed above the circular plate 68. The handle 69 and the bottom of the circular plate 68 are fixedly installed with threaded rods 610, spring hydraulic rods 61, arc-shaped limiting grooves 62, limiting holes 63, small rubber rings 64, extrusion plates 65, large rubber rings 66, limiting rods 67, circular plates 68, handles 69 and threaded rods 610 in multiple sets. The limiting rods 67 slide through the arc-shaped limiting grooves 62 and inside the limiting holes 63. The large rubber rings 66 are attached to the surface of the hinge frame 57. The small rubber rings 64 are attached to the bottom of the extrusion plates 65. The threaded rods 610 are threaded onto the mounting plate 56 through the extrusion plates 65 and the hinge frame 57.

[0027] In this embodiment, based on the curved surface shape of the rail head, rail web, etc., the spring hydraulic rod 61 pushes the hinge frame 57 to rotate around the mounting plate 56, adjusting the contact angle between the corner brush 518 and the rail body 1. The limiting rod 67 slides along the arc-shaped limiting groove 62 and inserts into the limiting hole 63 to position and adjust the angle. Turning the handle 69 drives the circular plate 68 to rotate, causing the threaded rod 610 to screw into the mounting plate 56. When the extrusion plate 65 presses down, the large rubber ring 66 and the small rubber ring 64 fit together to form a double seal and fixation, preventing the hinge frame 57 from shaking during cleaning. When the rail is worn and deformed, the elastic buffer of the spring hydraulic rod 61 can adaptively adjust the pressure to prevent excessive wear of the corner brush 518 and ensure a uniform and stable cleaning effect.

[0028] In one embodiment of the present invention, an auxiliary component 7 is provided on the rail trolley 2. The auxiliary component 7 includes a coupling agent water tank 71, which is fixedly installed on the rail trolley 2. A transfer water pump 72 is fixedly installed on the rail trolley 2. A bend 73 is fixedly installed between the water pump 72's suction end and the coupling agent water tank 71. A nozzle 74 is fixedly installed at the water pump 72's outlet end. A square tube 75 is fixedly installed on the rail trolley 2. One end of a spring rod 76 is fixedly installed inside the square tube 75. A square block 77 is fixedly installed at the other end of the spring rod 76. A long... Plate 78, long plate 78 is rotatably mounted with a circular roller 79, coupling agent water tank 71, transmission water pump 72, bend pipe 73, nozzle 74, square tube 75, spring rod 76, block 77, long plate 78 and circular roller 79 are arranged in multiple sets, multiple sets of nozzle 74 are arranged above the rail body 1, spring rod 76 is arranged inside the square tube 75, block 77 slides inside the square tube 75, multiple sets of circular roller 79 are attached to the surface of the rail body 1, and multi-angle ultrasonic module 4 is fixedly installed on long plate 78. Multi-angle ultrasonic module 4 consists of a 70° ultrasonic probe, a 37° ultrasonic probe and a 0° ultrasonic probe.

[0029] In this embodiment, the transmission water pump 72 is started, and the coupling agent is drawn from the coupling agent tank 71 through the bend pipe 73. It is then evenly sprayed onto the cleaned surface of the rail body 1 through the nozzle 74. The coupling agent fills the gap between the ultrasonic probe and the rail, preventing air from affecting the detection signal. The spring rod 76 inside the square tube 75 pushes the block 77 to move the long plate 78 downward, so that the roller 79 fits against the surface of the rail body 1, providing stable support for the multi-angle ultrasonic module 4. During the test, the rail trolley 2 moves along the rail, and the roller 79 rolls adaptively with the undulations of the rail surface, maintaining a constant contact pressure between the multi-angle ultrasonic module 4 and the rail, ensuring accurate test data. The 70°, 37° and 0° ultrasonic probes of the multi-angle ultrasonic module 4 scan the internal damage of the rail from different angles to achieve comprehensive detection.

[0030] In this application, all electrical components are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device that can control the main unit 3, the multi-angle ultrasonic module 4, the No. 1 water pump 53, the motor 59, and the transmission water pump 72. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. In addition, the standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art.

[0031] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that each electrical appliance can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure appearing in this application document, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A rail damage detection device, comprising a rail trolley (2) that travels on a rail body (1), a main unit (3) fixedly mounted on the rail trolley (2), and a multi-angle ultrasonic module (4) provided on the rail trolley (2), characterized in that: The rail trolley (2) is equipped with a cleaning assembly (5), which includes: A water storage tank (51) is fixedly installed on the rail trolley (2). A T-shaped support plate (52) is fixedly installed on the water storage tank (51). A No. 1 water pump (53) is fixedly installed on the T-shaped support plate (52). A water pump pipe (54) is fixedly installed at the water pump (53). A diversion pipe (55) is fixedly installed at the water outlet of the No. 1 water pump (53). An installation plate (56) is fixedly installed on the rail trolley (2). A hinged frame (57) is hingedly mounted on the mounting plate (56). A bracket (58) is fixedly mounted on the mounting plate (56). A motor (59) is fixedly mounted on the bracket (58). One end of a short rod (510) is fixedly mounted on the output end of the motor (59). A vertical bevel gear (511) is fixedly mounted on the other end of the short rod (510). A drive pulley (512) is rotatably mounted on the mounting plate (56). A horizontal bevel gear (513) is fixedly mounted on the drive pulley (512). A circular tube (514) is rotatably mounted on the hinge frame (57). A transmission pulley (515) is fixedly mounted on the circular tube (514). A power belt (516) is installed between the drive pulley (512) and the transmission pulley (515). A circular ring plate (517) is fixedly mounted on the circular tube (514). An angle brush bristles (518) are fixedly mounted on the circular ring plate (517). Multiple sets of thin rods (519) are fixedly mounted at the bottom of the circular ring plate (517). A conical block (520) is fixedly mounted on the thin rod (519). A guide ring (521) is fixedly mounted on the conical block (520).

2. The rail damage detection device according to claim 1, characterized in that: The hinge frame (57), bracket (58), motor (59), short rod (510), vertical bevel gear (511), drive pulley (512), horizontal bevel gear (513), round tube (514), transmission pulley (515), power belt (516), ring plate (517), corner brush (518) and thin rod (519) are provided in multiple sets.

3. The rail damage detection device according to claim 1, characterized in that: The vertical bevel gear (511) meshes with the horizontal bevel gear (513), a valve is provided on the diversion pipe (55), a water inlet is provided on the water storage tank (51), and the water pumping pipe (54) is located inside the water storage tank (51).

4. The rail damage detection device according to claim 1, characterized in that: The diverter tube (55) is connected to the internal space of multiple sets of circular tubes (514). A sealing ring (522) is provided at the joint between the diverter tube (55) and the circular tube (514). The thin rod (519), the conical block (520) and the guide ring (521) are located directly below the circular tube (514). The thin rod (519), the conical block (520) and the guide ring (521) are located at the center of multiple sets of corner bristles (518).

5. The rail damage detection device according to claim 1, characterized in that: An adjustment assembly (6) is provided on the mounting plate (56). The adjustment assembly (6) includes a spring hydraulic rod (61). The spring hydraulic rod (61) is hinged between the mounting plate (56) and the hinge frame (57). An arc-shaped limiting groove (62) is provided on the hinge frame (57). A limiting hole (63) is provided on the mounting plate (56). A small rubber ring (64) is fixedly installed on the hinge frame (57). An extrusion plate (65) is placed on the hinge frame (57). A large rubber ring (66) and a limiting rod (67) are fixedly installed at the bottom of the extrusion plate (65). A circular plate (68) is placed on the extrusion plate (65). A handle (69) is fixedly installed on the top of the circular plate (68). A threaded rod (610) is fixedly installed at the bottom of the circular plate (68).

6. The rail damage detection device according to claim 5, characterized in that: The spring hydraulic rod (61), arc-shaped limiting groove (62), limiting hole (63), small rubber ring (64), extrusion plate (65), large rubber ring (66), limiting rod (67), round plate (68), handle (69) and threaded rod (610) are provided in multiple sets.

7. The rail damage detection device according to claim 5, characterized in that: The limiting rod (67) slides through the arc-shaped limiting groove (62) inside the limiting hole (63), the large rubber ring (66) is attached to the surface of the hinge frame (57), the small rubber ring (64) is attached to the bottom of the extrusion plate (65), and the threaded rod (610) passes through the extrusion plate (65) and the hinge frame (57) and is threaded onto the mounting plate (56).

8. The rail damage detection device according to claim 1, characterized in that: The rail trolley (2) is provided with an auxiliary component (7), which includes a coupling agent water tank (71). The coupling agent water tank (71) is fixedly installed on the rail trolley (2). A transmission water pump (72) is fixedly installed on the rail trolley (2). A bend (73) is fixedly installed between the pumping end of the transmission water pump (72) and the coupling agent water tank (71). A nozzle (74) is fixedly installed at the outlet end of the transmission water pump (72). A square tube (75) is fixedly installed on the rail trolley (2). One end of a spring rod (76) is fixedly installed inside the square tube (75). A block (77) is fixedly installed at the other end of the spring rod (76). A long plate (78) is fixedly installed on the block (77). A circular roller (79) is rotatably installed on the long plate (78).

9. The rail damage detection device according to claim 8, characterized in that: The coupling agent tank (71), the transmission water pump (72), the bend (73), the nozzle (74), the square tube (75), the spring rod (76), the block (77), the long plate (78), and the round roller (79) are provided in multiple sets.

10. The rail damage detection device according to claim 8, characterized in that: Multiple sets of nozzles (74) are arranged above the rail body (1), the spring rod (76) is arranged inside the square tube (75), the block (77) slides inside the square tube (75), multiple sets of rollers (79) are attached to the surface of the rail body (1), and the multi-angle ultrasonic module (4) is fixedly installed on the long plate (78).

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