Rail flaw detection device

Abstract

The present application relates to the technical fields of track crack detection, and discloses a track crack detection device, which comprises a manned track detection trolley, the manned track detection trolley is provided with a control module and a detection module, and further comprises a cleaning and decontamination mechanism for removing oil stains on the track surface, a secondary cleaning mechanism for secondary cleaning, a dust removal mechanism for removing dust on the track surface, and a flexible connecting mechanism arranged between the manned track detection trolley and the cleaning and decontamination mechanism and used for connecting the manned track detection trolley and the cleaning and decontamination mechanism. Through the arrangement of the cleaning and decontamination mechanism, the secondary cleaning mechanism, the dust removal mechanism and the flexible connecting mechanism, the dust removal mechanism can quickly remove dust on the track surface, which facilitates subsequent cleaning of the track surface, and the cleaning and decontamination mechanism removes oil stains on the track surface, thereby avoiding the residual oil stains on the track surface and affecting the accuracy of the detection module.

Description

Technical Field

[0001] This invention relates to the field of track crack detection technology, specifically a track crack detection device. Background Technology

[0002] Track crack detection is a professional operation that uses non-destructive testing methods to inspect the rail surface, rail head, and interior of the rail body for defects. It mainly identifies potential problems such as surface cracks, internal hidden cracks, fatigue damage, and rust inclusions. It uses the ultrasonic coupling detection principle to collect acoustic signals inside the rail to determine the integrity of the track structure and provide basic data support for the safe operation of rail transit.

[0003] The manned track inspection trolley is a dedicated track inspection device that can travel along the rails, carry inspection modules, and be operated by personnel. It integrates a walking mechanism, a flaw detection module, and a front-end auxiliary operation structure. It can travel continuously along the track and simultaneously complete on-orbit flaw detection, data acquisition, and on-site condition verification. It is the core equipment for realizing routine track crack detection.

[0004] In actual track crack detection operations, the long-term adhesion of dust, mud, oil, and rust on the rail surface directly interferes with the coupling effect of ultrasonic testing, causing noise in the detection signal and inaccurate defect identification, severely reducing the accuracy and reliability of track crack detection. Most existing manned track inspection trolleys only have walking and inspection functions and lack an integrated pre-cleaning structure. Before operation, they often rely on manual sweeping, high-pressure water washing, or a single brush dust removal method, which has significant drawbacks. Traditional cleaning devices are mostly rigidly connected, and the vibrations generated during the brushing and water spraying process are directly transmitted to the inspection carriage, causing unstable flaw detection signals and increased noise, which seriously affects the accuracy of crack identification. Conventional methods of simply rinsing with water and cleaning with a brush cannot effectively break down oil stains and stubborn deposits on the rail surface. Oil stains can also cover up cracks and disrupt ultrasonic coupling, leading to unreliable test results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a track crack detection device that solves the problem that relying solely on ordinary water rinsing and a single brush sweeping can only clean surface dust and cannot effectively decompose and remove oil stains and stubborn dirt adhering to the rail surface.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a track crack detection device, comprising: A manned track inspection trolley, the manned track inspection trolley being equipped with a control module and a detection module, and further comprising: Cleaning and decontamination mechanism for removing oil stains from track surfaces; A secondary cleaning unit is used for secondary cleaning of stains; Dust removal mechanism, used for removing dust from track surfaces; A flexible connection mechanism is installed between the manned track inspection trolley and the cleaning and decontamination mechanism to connect the manned track inspection trolley and the cleaning and decontamination mechanism; The cleaning and decontamination mechanism includes an installation platform; The flexible connection mechanism includes a fixed block fixed on a manned track inspection trolley, an elastic shock absorber II rotatably mounted on the fixed block, an arc-shaped slider rotatably mounted at the end of the elastic shock absorber II, and an arc-shaped guide frame for the arc-shaped slider to slide on the mounting platform.

[0007] By adopting the above technical solution, and by setting up a cleaning and decontamination mechanism, a secondary cleaning mechanism, a dust removal mechanism, and a flexible connection mechanism, the dust removal mechanism can quickly remove dust from the track surface, facilitating subsequent cleaning of the track surface. At the same time, the cleaning and decontamination mechanism removes oil stains from the track surface, preventing oil stains from remaining on the track surface and affecting the accuracy of the detection module's judgment. Meanwhile, the secondary cleaning mechanism can further clean and remove the stains, providing a better cleaning effect and preventing oil and dust residue. At the same time, the flexible connection mechanism can float up and down and automatically align itself with the track curvature to avoid jamming and derailment.

[0008] Preferably, a water storage tank is fixedly installed on the manned track inspection trolley, the water storage tank is equipped with a water filling hopper with a sealed cover, and a water pump is fixedly installed on the water storage tank. A treatment water tank is fixedly installed on the mounting platform, and the water inlet pipe of the water pump penetrates the outer wall of the water storage tank and extends to below the liquid level inside the water storage tank. A connecting hose is fixed to the end of the drain pipe of the water pump, and the end of the connecting hose penetrates the outer wall of the treatment water tank and extends to the inside of the treatment water tank. A flushing pipe is installed at the bottom of the treatment water tank on both sides of the track.

[0009] Preferably, an ultrasonic vibrator is installed at the bottom of the water storage tank, and multiple guide plates are provided inside the water storage tank, which divide the inside of the water storage tank into S-shaped flow channels.

[0010] Preferably, a plurality of elastic shock absorbers are fixedly installed at the bottom of the installation platform, a connecting frame is installed at the end of each elastic shock absorber, a support frame is fixed at the bottom of the connecting frame, and an auxiliary wheel adapted to the track is rotatably installed on the support frame.

[0011] Preferably, a number of the connecting frames are fixedly mounted on the sides of the same cleaning scraper, and the cleaning scraper is provided with an inclined surface for guidance.

[0012] Preferably, the secondary cleaning mechanism includes a connecting shaft rotatably mounted on several support frames, with cleaning brushes fitted to the track surface at both ends of the connecting shaft, and a drive assembly for driving the cleaning brushes to rotate on the connecting shaft.

[0013] Preferably, the drive assembly includes a plurality of drive wheels fixedly mounted on the outer surface of the connecting shaft, the outer surface of the drive wheels being in contact with the ground.

[0014] Preferably, the dust removal mechanism includes several connecting shells fixed to the support frame. A piston rod is slidably installed inside the connecting shell. A piston is fixed at the end of the piston rod and fits against the inner wall of the connecting shell. An air inlet is provided on the connecting shell, and an air outlet is provided at the position of the connecting shell facing the track. A second drive assembly for driving the piston rod is provided on the connecting shaft.

[0015] Preferably, the second drive assembly includes two connecting discs that separate the connecting shaft, a push rod is eccentrically fixed between the two connecting discs, a guide frame is slidably sleeved on the outer surface of the push rod, and the piston rod is fixedly connected to the end of the guide frame.

[0016] Preferably, the connecting housing is equipped with a one-way air inlet valve and a one-way air outlet valve at the positions of the air inlet and air outlet, respectively, and the one-way air inlet valve and the one-way air outlet valve are provided with dustproof nets.

[0017] Working principle: When the manned track inspection trolley is running on the track, it uses the control module and the detection module to inspect the track surface. At the same time, the installation platform is pushed forward synchronously under the action of the flexible connection mechanism. Meanwhile, the elastic shock absorber can buffer the connecting frame, support frame and auxiliary wheel, and absorb the vibration generated by the auxiliary wheel walking on the track. The support frame drives the drive wheel to rotate, and the rotation of the drive wheel will drive the connecting shaft to rotate. As the connecting shaft rotates with the drive wheel, it will drive the connecting disc to rotate synchronously. The rotation of the connecting disc will drive the push rod to rotate eccentrically. The rotation of the push rod will drive the guide frame to drive the piston rod to reciprocate, thereby driving the piston to move and realize the work of blowing and cleaning dust. The system controls the activation of the water pump and ultrasonic vibrator. The water pump draws water from the storage tank into the connecting hose, allowing the water to flow through the hose into the treatment tank. The ultrasonic vibrator generates a large number of micro-cavitation bubbles in the water through high-frequency ultrasonic vibration, activating ordinary clean water into activated water with physical stripping capabilities. When sprayed onto the rail surface, the micro-bubbles burst, generating a micro-impact effect that loosens and emulsifies stubborn dirt. As the connecting shaft rotates, it drives the cleaning brush to rotate synchronously. The cleaning brush can perform a secondary roller cleaning on the cleaned track to further remove residual dirt. The cleaning scraper can scrape away the inclined sewage, preventing oil stains from remaining on the track surface. At the same time, the inclined surface can better push the sewage to both sides of the track, effectively preventing stains from remaining. The scraper only scrapes away surface dirt and excess water, leaving a thin and uniform water film on the track surface. This water film can be used as a coupling medium for ultrasonic flaw detection, facilitating stable coupling of subsequent detection modules.

[0018] This invention provides a track crack detection device. It has the following advantages: 1. This invention incorporates a cleaning and decontamination mechanism, a secondary cleaning mechanism, a dust removal mechanism, and a flexible connection mechanism. The dust removal mechanism quickly removes dust from the track surface, facilitating subsequent cleaning. Simultaneously, the cleaning and decontamination mechanism removes oil stains from the track surface, preventing residue from affecting the accuracy of the detection module. The secondary cleaning mechanism further cleans and removes the cleaned stains, ensuring thorough removal and preventing oil and dust residue. Furthermore, the flexible connection mechanism can float up and down and automatically align with the track's curvature, preventing jamming and derailment.

[0019] 2. This invention incorporates a fixed block, a second elastic shock absorber, an arc-shaped slider, and an arc-shaped guide frame. The second elastic shock absorber absorbs vibrations generated during the cleaning and decontamination process, preventing these vibrations from being transmitted to the manned track inspection trolley and affecting the inspection module's work. Simultaneously, the design of the arc-shaped slider and guide frame allows the slider to self-adaptively float up and down within the arc-shaped guide, while also possessing a slight degree of freedom to swing left and right. This allows the cleaning and decontamination mechanism to adapt to the track's height variations and curves, maintaining constant contact with the track surface. This prevents jamming when passing curves or switches and ensures the stability of the cleaning operation.

[0020] 3. This invention utilizes a guide plate and an ultrasonic vibrator. The ultrasonic vibrator generates numerous micro-cavitation bubbles in the water through high-frequency ultrasonic vibration, activating ordinary clean water into activated water with physical peeling capabilities. Without the addition of chemical cleaning agents, it can weaken and peel off oil stains, floating rust, and mud deposits on the rail surface. After being sprayed onto the rail surface, the micro-bubbles burst, generating a micro-impact effect that loosens and emulsifies stubborn dirt. This provides a pre-softening treatment for subsequent mechanical brushing and scraping, significantly improving cleaning efficiency. At the same time, the built-in installation in an independent cleaning water tank concentrates the vibration on the water body, preventing the high-frequency vibration from being transmitted to the frame and detection module, ensuring that the accuracy of subsequent track flaw detection is not interfered with.

[0021] 4. By setting up a connecting shaft, a cleaning brush, and a drive wheel, the manned track inspection trolley will push the installation platform forward synchronously during its movement, which will drive the drive wheel to rotate. The rotation of the drive wheel will drive the cleaning brush to rotate synchronously through the connecting shaft. The cleaning brush can perform secondary cleaning of the track after cleaning, further removing residual stains and effectively improving the overall cleanliness.

[0022] 5. By setting up a connecting shell, a piston rod, and a piston, the present invention enables the piston rod to drive the piston to move inside the connecting shell, thereby achieving the work of suction and blowing air. This allows for preliminary cleaning of the track surface, reducing the accumulation of dust residue and improving the effectiveness of subsequent cleaning work. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another angle; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the cleaning and decontamination mechanism and the flexible connection mechanism of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the arc-shaped guide frame of the present invention; Figure 6 This is a schematic cross-sectional view of the water treatment tank of the present invention; Figure 7 This is a schematic diagram of the cleaning and decontamination mechanism of the present invention; Figure 8 This is a schematic diagram of the secondary cleaning mechanism of the present invention; Figure 9 This is a schematic diagram of the soot blowing and cleaning mechanism of the present invention; Figure 10 This is a schematic diagram of the push rod structure of the present invention.

[0024] 1. Manned track inspection trolley; 2. Control module; 3. Inspection module; 4. Cleaning and decontamination mechanism; 401. Water tank; 402. Water filling hopper; 403. Water pump; 404. Connecting hose; 405. Treatment water tank; 406. Installation platform; 407. Guide plate; 408. Ultrasonic vibrator; 409. Flushing pipe; 410. Connecting frame; 411. Elastic shock absorber one; 412. Support frame; 413. Auxiliary wheel; 414. Cleaning scraper; 5. Secondary cleaning mechanism; 501. Connecting shaft; 502. Drive wheel; 503. Cleaning brush; 6. Dust removal mechanism; 601. Connecting housing; 602. Connecting disc; 603. Push rod; 604. Guide frame; 605. Piston rod; 606. Piston; 607. One-way air inlet valve; 608. One-way air outlet valve; 7. Flexible connection mechanism; 701. Fixing block; 702. Elastic shock absorber II; 703. Arc-shaped slider; 704. Arc-shaped guide frame. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described 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.

[0026] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides a track crack detection device, comprising: The manned track inspection vehicle 1 is equipped with a control module 2 and a detection module 3, and also includes: Cleaning and decontamination mechanism 4 is used to remove oil stains from the track surface; Secondary cleaning unit 5 is used for secondary cleaning of stains; Dust removal mechanism 6 is used to remove dust from the track surface; The flexible connection mechanism 7 is located between the manned track inspection trolley 1 and the cleaning and decontamination mechanism 4, and is used to connect the manned track inspection trolley 1 and the cleaning and decontamination mechanism 4. The cleaning and decontamination mechanism 4 includes an installation platform 406.

[0027] By setting up a cleaning and decontamination mechanism 4, a secondary cleaning mechanism 5, a dust removal mechanism 6, and a flexible connection mechanism 7, the dust removal mechanism 6 can quickly remove dust from the track surface, making it easier to clean the track surface later. At the same time, the cleaning and decontamination mechanism 4 removes oil stains from the track surface, preventing oil stains from remaining on the track surface and affecting the accuracy of the detection module 3's judgment. Meanwhile, the secondary cleaning mechanism 5 can further clean and remove the stains, providing a removal effect and preventing oil and dust residue. At the same time, the flexible connecting mechanism 7 can float up and down and can automatically align itself along the track curvature to avoid jamming and derailment. Please see the appendix Figure 4 and attached Figure 5 The flexible connection mechanism 7 includes a fixed block 701 fixed on the manned track detection trolley 1, an elastic shock absorber 702 rotatably mounted on the fixed block 701, an arc-shaped slider 703 rotatably mounted on the end of the elastic shock absorber 702, and an arc-shaped guide frame 704 for the arc-shaped slider 703 to slide on the mounting platform 406.

[0028] Furthermore, by setting a fixed block 701, an elastic shock absorber 702, an arc-shaped slider 703, and an arc-shaped guide 704, the elastic shock absorber 702 absorbs the vibrations generated during the cleaning and decontamination process of the cleaning and decontamination mechanism, preventing the vibrations during its operation from being transmitted to the manned track inspection trolley 1 and affecting the inspection work of the inspection module 3. At the same time, the design of the arc-shaped slider 703 and the arc-shaped guide 704 allows the arc-shaped slider 703 to achieve up-and-down self-adaptation within the arc-shaped guide, while also having a slight degree of freedom to swing left and right. This allows the cleaning and decontamination mechanism to adapt to the height and curvature of the track and always maintain contact with the track surface, avoiding jamming when going through bends or switches, and ensuring the stability of the cleaning operation.

[0029] For details, please refer to the appendix. Figure 3 and attached Figure 6 A water tank 401 is fixedly installed on the manned track inspection trolley 1. The water tank 401 is equipped with a water filling hopper 402 with a sealed cover, and a water pump 403 is fixedly installed on the water tank 401. A treatment water tank 405 is fixedly installed on the installation platform 406. The water inlet pipe of the water pump 403 passes through the outer wall of the water tank 401 and extends to below the liquid level inside the water tank 401. A connecting hose 404 is fixed to the end of the drain pipe of the water pump 403. The end of the connecting hose 404 passes through the outer wall of the treatment water tank 405 and extends to the inside of the treatment water tank 405. A flushing pipe 409 is installed at the bottom of the treatment water tank 405 on both sides of the track.

[0030] By setting up a water storage tank 401, a water pump 403, a connecting hose 404, and a flushing pipe 409, the water storage tank 401 has a transparent observation window on its surface. The water storage tank 401 is set on the manned track inspection trolley 1, which allows the staff to observe the water level at any time. The water pump 403 pumps the water inside the water storage tank 401 into the connecting hose 404, and the water flows out from the flushing pipe 409 after passing through the connecting hose 404, which can effectively wash and remove dirt from the track surface.

[0031] For details, please refer to the appendix. Figure 6 An ultrasonic vibrator 408 is installed at the bottom of the water storage tank 401. Multiple guide plates 407 are provided inside the water storage tank 401, which divide the interior of the water storage tank 401 into an S-shaped flow channel.

[0032] By setting up a guide plate 407 and an ultrasonic vibrator 408, and providing air holes on the water tank 405, the ultrasonic vibrator 408 generates a large number of micro-cavitation bubbles in the water through high-frequency ultrasonic vibration, activating ordinary clean water into activated water with physical peeling ability. Without the addition of chemical cleaning agents, it can weaken and peel off the oil stains, floating rust, and mud adhering layers on the rail surface. After being sprayed onto the rail surface, the micro-bubbles burst and generate a micro-impact effect, loosening and emulsifying stubborn dirt. This provides a pre-softening treatment for subsequent mechanical brushing by the cleaning brush 503 and scraping by the scraper, greatly improving cleaning efficiency. At the same time, the built-in installation in the independent cleaning water tank concentrates the vibration on the water body, preventing a large amount of high-frequency vibration from being transmitted to the frame and detection module 3, ensuring that the accuracy of subsequent track flaw detection is not interfered with. Meanwhile, the guide plate 407 can increase the contact time between the water flow and the ultrasonic vibrator 408, ensuring that the water fully receives the ultrasonic vibration energy, so that the clean water is fully cavitated and activated, increasing the amount of microbubble generated and the uniformity of activation. At the same time, it can regulate the water flow direction in the tank, prevent the water from being quickly discharged and lost, and ensure that the spray water always has a stable physical cleaning ability.

[0033] For details, please refer to the appendix. Figure 7 and attached Figure 8 The bottom of the mounting platform 406 is fixedly equipped with several elastic shock absorbers 411. The end of the elastic shock absorber 411 is equipped with a connecting frame 410. The bottom of the connecting frame 410 is fixed with a support frame 412. An auxiliary wheel 413 adapted to the track is rotatably mounted on the support frame 412.

[0034] By setting up an elastic shock absorber 411, a connecting frame 410, a support frame 412, and an auxiliary wheel 413, the auxiliary wheel 413 provides support and guidance. The elastic shock absorber 411 can buffer the connecting frame 410, the support frame 412, and the auxiliary wheel 413, absorbing the vibration generated by the auxiliary wheel 413 walking on the track, and further reducing the impact on the manned track inspection trolley 1.

[0035] For details, please refer to the appendix. Figure 8 Several connecting brackets 410 have the same cleaning scraper 414 fixedly installed on their sides, and the cleaning scraper 414 has an inclined surface for guidance.

[0036] By setting up a cleaning scraper 414, the inclined sewage can be scraped off, preventing oil stains from remaining on the track surface. At the same time, the inclined surface can better push the sewage to both sides of the track, effectively preventing stains from remaining. The scraper only scrapes off surface dirt and excess water, leaving a thin and uniform water film on the track surface. This water film can be used as a coupling medium for ultrasonic testing, facilitating stable coupling of the subsequent detection module 3.

[0037] For details, please refer to the appendix. Figure 7 and attached Figure 8 The secondary cleaning mechanism 5 includes a connecting shaft 501 rotatably mounted on several support frames 412. Both ends of the connecting shaft 501 are equipped with cleaning brushes 503 that are in contact with the track surface. The connecting shaft 501 is provided with a drive assembly for driving the cleaning brushes 503 to rotate. The drive assembly includes several drive wheels 502 fixedly mounted on the outer surface of the connecting shaft 501. The outer surface of the drive wheels 502 is in contact with the ground.

[0038] By setting up a connecting shaft 501, a cleaning brush 503, and a drive wheel 502, the manned track inspection trolley 1 will push the installation platform 406 forward synchronously during its movement, which will drive the drive wheel 502 to rotate. The rotation of the drive wheel 502 will drive the cleaning brush 503 to rotate synchronously through the connecting shaft 501. The cleaning brush 503 can perform a secondary roller cleaning on the cleaned track, further removing residual stains and effectively improving the overall cleanliness.

[0039] For details, please refer to the appendix. Figure 9 and attached Figure 10 The dust removal mechanism 6 includes several connecting housings 601 fixed to the support frame 412. A piston rod 605 is slidably installed inside the connecting housing 601. A piston 606 is fixed to the end of the piston rod 605 and fits against the inner wall of the connecting housing 601. An air inlet is provided on the connecting housing 601, and an air outlet is provided at the position of the connecting housing 601 facing the track. A drive assembly 2 for driving the piston rod 605 to move is provided on the connecting shaft 501.

[0040] By setting up a connecting housing 601, a piston rod 605, and a piston 606, the piston rod 605 drives the piston 606 to move inside the connecting housing 601, which can realize the work of suction and blowing, and can perform preliminary dust removal work on the track surface, reduce the residual dust accumulation, and improve the effect of subsequent cleaning work.

[0041] For details, please refer to the appendix. Figure 9 and attached Figure 10The second drive assembly includes two connecting discs 602 that separate the connecting shaft 501. A push rod 603 is eccentrically fixed between the two connecting discs 602. A guide frame 604 is slidably sleeved on the outer surface of the push rod 603. The piston rod 605 is fixedly connected to the end of the guide frame 604.

[0042] By setting up a connecting disc 602, a push rod 603, and a guide frame 604, the connecting shaft 501 will drive the connecting disc 602 to rotate synchronously as the drive wheel 502 rotates. The rotation of the connecting disc 602 will drive the push rod 603 to rotate eccentrically. The rotation of the push rod 603 will drive the guide frame 604 to drive the piston rod 605 to reciprocate, which in turn will drive the piston 606 to move to achieve the work of blowing and cleaning dust.

[0043] For details, please refer to the appendix. Figure 9 The connecting housing 601 is equipped with a one-way air inlet valve 607 and a one-way air outlet valve 608 at the air inlet and air outlet positions respectively, and dustproof nets are provided on the one-way air inlet valve 607 and the one-way air outlet valve 608.

[0044] By setting a one-way air inlet and a one-way air outlet valve 608, the dustproof net can block external dust from entering the interior and prevent the piston from jamming. At the same time, the one-way valve only allows clean air to enter and does not suck up dust from the rail surface, preventing dust accumulation and jamming that would affect the cleaning effect. The one-way air inlet valve 607 and the one-way air outlet valve 608 can guide and stabilize the airflow, ensuring a stable output of the blowing airflow and continuously maintaining a reliable rail surface cleaning effect.

[0045] Working principle: When the manned track inspection trolley 1 is running on the track, the control module 2 and the inspection module 3 are used to inspect the track surface. At the same time, under the action of the flexible connection mechanism 7, the installation platform 406 is pushed forward synchronously. Meanwhile, the elastic shock absorber 411 can buffer the connecting frame 410, the support frame 412 and the auxiliary wheel 413, and absorb the vibration generated by the auxiliary wheel 413 walking on the track. The support frame 412 drives the drive wheel 502 to rotate, and the rotation of the drive wheel 502 will drive the connecting shaft 501 to rotate. As the connecting shaft 501 rotates with the drive wheel 502, it will drive the connecting disc 602 to rotate synchronously. The rotation of the connecting disc 602 will drive the push rod 603 to rotate eccentrically. The rotation of the push rod 603 will drive the guide frame 604 to drive the piston rod 605 to reciprocate, thereby driving the piston 606 to move to achieve the work of blowing and cleaning dust. The water pump 403 and ultrasonic vibrator 408 are turned on. The water pump 403 pumps the water inside the water storage tank 401 into the connecting hose 404, so that the water flows through the connecting hose 404 into the treatment water tank 405. The ultrasonic vibrator 408 uses high-frequency ultrasonic vibration to generate a large number of micro-cavitation bubbles in the water, which activates ordinary clean water into activated water with physical peeling ability. After being sprayed onto the rail surface, the micro-bubbles burst to generate a micro-impact effect, which loosens and emulsifies stubborn dirt. While the connecting shaft 501 rotates, it drives the cleaning brush 503 to rotate synchronously. The cleaning brush 503 can perform a secondary roller cleaning on the cleaned track to further remove residual stains. The cleaning scraper 414 can scrape off the inclined sewage, preventing oil stains from remaining on the track surface. At the same time, the inclined surface can better push the sewage to both sides of the track, effectively preventing stains from remaining. The scraper only scrapes off surface dirt and excess water, leaving a thin and uniform water film on the track surface. This water film can be used as a coupling medium for ultrasonic flaw detection, facilitating stable coupling of the subsequent detection module 3.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A track crack detection device, comprising: A manned track inspection vehicle (1), wherein the manned track inspection vehicle (1) is provided with a control module (2) and a detection module (3), characterized in that it further includes: Cleaning and decontamination mechanism (4) is used to remove oil stains from the track surface; Secondary cleaning unit (5) is used for secondary cleaning of stains; The dust removal mechanism (6) is used to remove dust from the track surface; A flexible connection mechanism (7) is provided between the manned track inspection trolley (1) and the cleaning and decontamination mechanism (4) for connecting the manned track inspection trolley (1) and the cleaning and decontamination mechanism (4). The cleaning and decontamination mechanism (4) includes an installation platform (406). The flexible connection mechanism (7) includes a fixed block (701) fixed on the manned track inspection trolley (1), an elastic shock absorber (702) is rotatably mounted on the fixed block (701), an arc-shaped slider (703) is rotatably mounted at the end of the elastic shock absorber (702), and an arc-shaped guide frame (704) for the arc-shaped slider (703) to slide is fixed on the mounting platform (406).

2. The track crack detection device according to claim 1, characterized in that: A water tank (401) is fixedly installed on the manned track inspection trolley (1). A water filling hopper (402) with a sealing cover is provided on the water tank (401). A water pump (403) is fixed on the water tank (401). A treatment water tank (405) is fixed on the installation platform (406). The water inlet pipe of the water pump (403) penetrates the outer wall of the water tank (401) and extends to below the liquid level inside the water tank (401). A connecting hose (404) is fixed to the end of the drain pipe of the water pump (403). The end of the connecting hose (404) penetrates the outer wall of the treatment water tank (405) and extends to the inside of the treatment water tank (405). A flushing pipe (409) is installed at the bottom of the treatment water tank (405) on both sides of the track.

3. The track crack detection device according to claim 2, characterized in that: An ultrasonic vibrator (408) is installed at the bottom of the water storage tank (401). The water storage tank (401) is provided with multiple guide plates (407), which divide the interior of the water storage tank (401) into an S-shaped flow channel.

4. The track crack detection device according to claim 2, characterized in that: The bottom of the installation platform (406) is fixedly equipped with a plurality of elastic shock absorbers (411), and the end of the elastic shock absorber (411) is equipped with a connecting frame (410). The bottom of the connecting frame (410) is fixed with a support frame (412), and an auxiliary wheel (413) adapted to the track is rotatably mounted on the support frame (412).

5. The track crack detection device according to claim 4, characterized in that: The same cleaning scraper (414) is fixedly installed on the side of several of the connecting frames (410), and the cleaning scraper (414) is provided with an inclined surface for guidance.

6. The track crack detection device according to claim 4, characterized in that: The secondary cleaning mechanism (5) includes a connecting shaft (501) rotatably mounted on several support frames (412). Both ends of the connecting shaft (501) are equipped with cleaning brushes (503) that fit against the track surface. The connecting shaft (501) is provided with a drive assembly for driving the cleaning brushes (503) to rotate.

7. The track crack detection device according to claim 6, characterized in that: The drive assembly includes a plurality of drive wheels (502) fixedly mounted on the outer surface of the connecting shaft (501), and the outer surface of the drive wheels (502) is in contact with the ground.

8. The track crack detection device according to claim 6, characterized in that: The dust removal mechanism (6) includes several connecting shells (601) fixed to the support frame (412). A piston rod (605) is slidably installed inside the connecting shell (601). A piston (606) is fixed at the end of the piston rod (605) and fits against the inner wall of the connecting shell (601). An air inlet is provided on the connecting shell (601), and an air outlet is provided on the connecting shell (601) facing the track. A drive assembly II for driving the piston rod (605) is provided on the connecting shaft (501).

9. The track crack detection device according to claim 8, characterized in that: The second drive assembly includes two connecting discs (602) that separate the connecting shaft (501). A push rod (603) is eccentrically fixed between the two connecting discs (602). A guide frame (604) is slidably sleeved on the outer surface of the push rod (603). The piston rod (605) is fixedly connected to the end of the guide frame (604).

10. A track crack detection device according to claim 8, characterized in that: The connecting housing (601) is equipped with a one-way air inlet valve (607) and a one-way air outlet valve (608) at the air inlet and air outlet positions respectively, and the one-way air inlet valve (607) and the one-way air outlet valve (608) are provided with dustproof nets.

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