Turnway rail flaw detection vehicle

Abstract

The invention relates to the technical field of turnout rail flaw detection equipment, and discloses a turnout rail flaw detection vehicle. The turnout rail flaw detection vehicle comprises: a frame assembly comprising a vehicle body frame and rail traveling wheels, the front-back direction of the vehicle body frame is set as the X direction, the left-right direction of the vehicle body frame is set as the Y direction, the height direction of the vehicle body frame is set as the Z direction, and the rail traveling wheels are arranged at the front end and the rear end of the vehicle body frame along the X direction; the coupling agent assembly is mounted on the frame assembly; the probe assembly is mounted on one side of the frame assembly in the Y direction; the probe assembly comprises a rail bottom flaw detection device for detecting flaws on the bottom surface of the rail and a side flaw detection device for detecting flaws on the side surface of the bottom of the rail; the rail bottom flaw detection device and the side flaw detection device are respectively provided with magnets for improving the coupling performance of the probe assembly and the turnout rail. Through the integrated and modular design, the detection precision, the operation efficiency and the environmental adaptability of the device are obviously superior to those of traditional equipment, and the device is particularly suitable for the high-frequency and high-reliability maintenance requirements of a railway system on the turnout rail.

Description

Technical Field

[0001] The invention relates to the technical field of track flaw detection equipment, in particular to the technical field of turnout track flaw detection equipment, and specifically to a turnout track flaw detection vehicle. Background Art

[0002] As an important track equipment for trains to change lines and cross lines, turnout rails are characterized by large number, complex structure, high technical content, short service life, limited operating speed, low driving safety, and large investment in maintenance and repair. They are the weak link of railway lines and the key to affecting the stability and safety of train operation. The most influential turnout rail disease is rail damage. The damage and breakage of the point rail and the heart rail may cause the train to derail, and the alarm cannot be timely issued through the track circuit and interlocking equipment.

[0003] There are some technical difficulties in defect detection of turnout rails, mainly due to the complexity of their structure and the particularity of the use environment. The following are several key technical challenges:

[0004] (1) Complex geometric shapes: The turnout rail is composed of multiple track components in different directions and angles, such as the point rail, wing rail, guard rail, etc. The geometric shapes of these components are complex and changeable, making it difficult to directly apply the traditional straight rail flaw detection method;

[0005] (2) Irregular surface: The rail surface in the turnout area may not be as smooth as the straight section. There may be unevenness caused by welding points, joints or wear, which will affect the coupling effect between the probe and the rail surface, and thus affect the accuracy of the test results.

[0006] (3) High stress concentration area: Since a large lateral force is generated at the turnout rail when a train passes through, this area becomes a high-risk area prone to cracks and other defects. These tiny defects are often difficult to detect and require more sensitive and accurate detection methods.

[0007] (4) Space limitation: In actual operation, the flaw detection equipment must be able to move flexibly in a small space and be able to adapt to various types of turnout layouts; this puts higher requirements on the design of portable flaw detection vehicles;

[0008] (5) Dynamically changing working conditions: Frequent trains will cause vibration and noise interference, and weather conditions (such as temperature changes and humidity) will also affect the flaw detection results. In addition, in actual operations, it is also necessary to consider performing flaw detection work without affecting normal driving;

[0009] (6) Automation level: It is a challenge to realize high-speed automated display of flaw detection results, especially in the complex and ever-changing environment of turnout tracks. How to ensure the integrity and real-time nature of data acquisition, and how to quickly and accurately analyze and interpret these data are all issues that need to be addressed.

[0010] (7) Coupling problem: For a planar probe, the flatness tolerance of the probe coupling surface should not be greater than 0.05 mm to ensure good acoustic contact. However, in the actual turnout track environment, it is not easy to maintain such accuracy because there may be dirt, water stains or other obstacles that affect the coupling quality.

[0011] Due to the above technical difficulties, in the prior art, flaw detection of switch rails can only be carried out through manual flaw detection and inspection, and the flaw detection efficiency and accuracy are difficult to guarantee. Summary of the invention

[0012] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a branch rail flaw detection vehicle which can detect flaws along the branch rail with a high degree of automation.

[0013] The technical solution adopted by the present invention to solve its technical problem is:

[0014] A turnout rail flaw detection vehicle, used for turnout rail flaw detection, comprising:

[0015] The frame assembly includes a vehicle frame and track running wheels, wherein the front and rear direction of the vehicle frame is set as the X direction, the left and right direction of the vehicle frame is set as the Y direction, and the height direction of the vehicle frame is set as the Z direction. The track running wheels are arranged at the front and rear ends of the vehicle frame along the X direction;

[0016] A coupling agent assembly is installed on the frame assembly to assist the probe assembly in flaw detection;

[0017] The probe assembly is installed on one side of the frame assembly along the Y direction;

[0018] The probe assembly includes a rail bottom flaw detection device for detecting flaws on the bottom surface of the rail, and a side flaw detection device for detecting flaws on the bottom side surface of the rail; the rail bottom flaw detection device and the side flaw detection device are respectively provided with magnets for improving the coupling performance of the probe assembly and the switch rail.

[0019] The track running wheels are set along the X direction to ensure that the flaw detection vehicle moves smoothly along the track, adapt to the complex direction of the turnout track, and improve the detection efficiency. The bottom and side flaw detection devices are set up to detect the bottom and side surfaces of the track in a targeted manner, covering key damage areas (such as fatigue cracks and rust) to improve the comprehensiveness of the detection. A magnet is provided to enhance the coupling stability between the probe and the track surface through magnetic attraction, reduce signal interference, and improve the detection accuracy.

[0020] Furthermore, the rail bottom flaw detection device comprises a probe bracket connecting frame, a first probe base is mounted on the probe bracket connecting frame, and a first probe group is arranged on a side of the first probe base close to the branch rail;

[0021] The side flaw detection device comprises a connecting bracket and a second probe base, both ends of the second probe base are connected to the probe bracket connecting frame through the connecting bracket, and a second probe group is arranged on one side of the second probe base close to the branch rail.

[0022] The first probe base and the second probe base are installed independently, which is convenient for quickly adjusting the probe position according to different track structures and adapting to diversified detection needs. The first probe group and the second probe group can simultaneously detect different areas of the track, shorten the detection time and improve the work efficiency.

[0023] Furthermore, the rail bottom flaw detection device also includes a bottom wheel frame installed at both ends of the probe bracket connecting frame, and a magnet and a roller are provided on a side of the bottom wheel frame close to the branch rail;

[0024] The side flaw detection device also includes a probe limit block installed on the bottom wheel frame, the probe limit block is connected to the connecting bracket, and a magnet and a ball are provided on a side of the probe limit block close to the branch rail.

[0025] The bottom wheel frame and roller are equipped. The roller reduces the resistance of the probe movement, ensuring that the probe slides smoothly along the track to avoid missed detection caused by jamming. The probe limit block and ball bearing are equipped to accurately limit the probe deviation. The ball bearing reduces the side friction, protects the track surface and improves the detection consistency. Magnet assisted positioning, specifically: double fixation (roller / ball bearing + magnet) ensures that the probe is close to the track and enhances the stability of signal transmission.

[0026] Furthermore, it also includes a folding assembly for storing the probe assembly, the folding assembly includes a connecting rod assembly and a hanging buckle assembly, the connecting rod assembly and the hanging buckle assembly are used together to store the probe assembly; the hanging buckle assembly is installed on the frame assembly along the Z direction, one end of the connecting rod assembly is installed on the frame assembly, the other end of the connecting rod assembly is connected to the probe assembly, and the connecting rod assembly is arranged along the Y direction.

[0027] It is equipped with a folding assembly. When stored, the probe assembly is fixed by a connecting rod and a hanging buckle, which reduces the size of the equipment, facilitates transportation and storage, and prevents accidental collision and damage to the probe.

[0028] Furthermore, the connecting rod assembly includes two groups of connecting rods, which are arranged in parallel forward and backward along X, each group of connecting rods includes a first connecting rotating rod, a second connecting rotating rod, a third connecting rotating rod and a rotating rod connected in sequence, a first support rod is installed between the two second connecting rotating rods, a second support rod is installed between the two third connecting rotating rods, and the third connecting rotating rod and the rotating rod are pinned by a rotating long axis; the rotating rod is connected to the probe assembly.

[0029] The first connecting rod, the second connecting rod, the third connecting rod and the rotating rod form a multi-section connecting rod, and the multi-section connecting rod and the supporting rod form a linkage mechanism. The folding process is smooth and controllable to prevent the probe assembly from deforming due to uneven force. A rotating long axis pin connection is provided to provide a flexible rotating fulcrum to ensure smooth folding action and reduce the complexity of operation.

[0030] Furthermore, the hook assembly includes a hook fixing frame installed on the frame assembly along the Z direction, a hook for hanging the rotating long axis is installed on the hook fixing frame, and hook brackets for supporting the rotating long axis are provided on both sides of the hook; a female buckle assembly is provided below the hook, a male buckle assembly matching with the female buckle assembly is provided on the probe assembly, and the female buckle assembly is installed on the hook fixing frame; a pad block assembly is provided on the hook fixing frame, and the pad block assembly is arranged below the female buckle assembly.

[0031] It is equipped with a hook and a buckle bracket, and the buckle fixing frame cooperates with the rotating long axis to achieve rigid locking of the probe assembly to prevent shaking during storage. It is equipped with a female buckle + male buckle assembly, and the double locking mechanism (hook + buckle) improves storage reliability; the pad assembly buffers impact and can extend the service life of the buckle assembly.

[0032] Furthermore, the vehicle body frame includes a lower main beam of the trolley, and two track walking wheels are respectively installed at the front and rear ends of the lower main beam of the trolley through a coding wheel frame; the lower main beam of the trolley is provided with a front support frame and a rear support frame along the Z direction, and the front support frame and the rear support frame are arranged front and rear along the X direction, a cross bar is installed at the top of the front support frame, and a cross bar is installed at the top of the rear support frame, a trolley upper main beam is provided between the two cross bars, and an instrument frame is installed on the trolley upper main beam.

[0033] Furthermore, a large handle is provided between the two cross bars, and the large handle is distributed on both sides of the main beam of the trolley along the Y direction; a handle is installed on one of the cross bars, and the handle is located above the rear support frame.

[0034] Furthermore, the vehicle body frame is provided with wheels and a plate turning shaft, the plate turning shaft is arranged through the coding wheel frame, the wheels are arranged at both ends of the plate turning shaft through the wheel frame, and a plate turning frame is connected between the two wheel frames to realize synchronous movement of the wheel frames;

[0035] The vehicle body frame is also equipped with a turning assembly for turning the wheel, the turning assembly includes a hook rotating long axis, the hook rotating long axis is connected by a long axis and a short axis to form an L-shaped axis, the hook rotating long axis is installed on the lower main beam of the trolley through a hook frame, a wheel hook is installed on the long axis, the short axis is connected to a pull rope, the pull rope is connected to a pull rod, and the pull rod is installed on the cross bar; a wheel hook frame matching with the wheel hook is installed on the wheel frame.

[0036] The front and rear support frames, the lower main beam of the trolley, and the upper main beam of the trolley form a high-strength frame to improve the load-bearing capacity of the vehicle body and adapt to the rugged track environment. The large handle is ergonomically designed to facilitate manual handling or pushing, reducing operator fatigue. The handle makes it easy for operators to push the flaw detection trolley to improve flaw detection efficiency.

[0037] The wheel is hung on the wheel hook through the flip assembly, which is convenient for wheel storage.

[0038] Furthermore, the coupling agent assembly includes a box body installed on the vehicle body frame, a feeding port is opened on the upper surface of the box body, a liquid outlet pipe is installed on the lower surface of the box body, the liquid outlet pipe is connected to a tee, one port of the tee is connected to a main drain valve, and the other port of the tee is connected to a liquid level pipe; the main drain valve is connected to a plurality of drain valves, each drain valve is connected to a water nozzle through a water pipe, and the water nozzle is installed on the rail bottom flaw detection device.

[0039] The coupling agent box and multi-way valve can centrally store and distribute the coupling agent, and the flow rate is controlled by an independent drain valve to ensure uniform coverage of each probe area and reduce waste. The liquid level tube monitors in real time and intuitively displays the remaining coupling agent to avoid detection interruptions and improve operation continuity.

[0040] The beneficial effects of the present invention are as follows: the present invention is reasonably designed and has the following advantages:

[0041] (1) Efficient and accurate detection, the split probe assembly (rail bottom + side) combined with magnetic coupling realizes multi-area synchronous high-precision flaw detection and reduces the risk of missed detection;

[0042] (2) Strong adaptability, folding structure, flip wheel and modular probe design, can flexibly cope with complex turnout track directions and different working conditions;

[0043] (3) Convenient operation, ergonomic handles, quick storage and folding components, and automatic coupling agent supply system significantly reduce the intensity of manual intervention and improve work efficiency;

[0044] (4) Structural reliability, high-strength frame, double locking mechanism (hook + buckle) and buffer design ensure the durability and stability of the equipment in harsh environments;

[0045] (5) Economical, precise distribution of coupling agent and maintainable design reduce the cost of consumables and equipment maintenance frequency, and extend service life;

[0046] (6) The present invention is significantly superior to traditional equipment in terms of detection accuracy, operating efficiency and environmental adaptability through integrated and modular design, and is particularly suitable for the high-frequency and high-reliability maintenance requirements of the railway system for switch tracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 It is a structural schematic diagram of the initial state of the present invention;

[0049] Figure 2 is a schematic diagram of the structure of the probe assembly;

[0050] Figure 3 It is a schematic diagram of the structure of the probe assembly from another perspective;

[0051] Figure 4 is an installation diagram of the first probe group or the second probe group;

[0052] Figure 5 It is a structural diagram of the folding component in the folded state;

[0053] Figure 6 It is a structural diagram of the unfolded state of the folding component;

[0054] Figure 7 yes Figure 6 A partial enlarged view of the middle A;

[0055] Figure 8 It is a structural schematic diagram of the frame assembly;

[0056] Fig. 9 It is a structural diagram of the frame assembly from another perspective;

[0057] Fig.10 yes Fig. 9 A partial enlarged view of point B in the middle;

[0058] Fig.11 is a schematic diagram of the structure of the coupling agent assembly;

[0059] Fig.12 It is a structural schematic diagram of the working state of the present invention.

[0060] In the figure: 1. frame assembly, 2. coupling agent assembly, 3. probe assembly, 4. folding assembly, 5. turnout rail; 11. track running wheel, 12. lower main beam of trolley, 13. front support frame, 14. rear support frame, 15. cross bar, 16. encoding wheel frame, 17. upper main beam of trolley, 18. instrument frame, 19. big handle, 110. wheel, 111. handle, 112. flip frame, 113. hook rotation long axis, 114. wheel hook, 115. pull rope, 116. pull rod, 117. flip rotation axis, 118. wheel hook frame;

[0061] 21. Box body, 22. Feeding port, 23. Liquid outlet pipe, 24. Tee, 25. Drain valve, 26. Liquid level pipe;

[0062] 31. Rail bottom flaw detection device, 32. Side flaw detection device, 33. Magnet, 34. Cover plate, 35. Mounting column, 36. Nut, 37. Spring;

[0063] 311. Probe bracket connecting frame, 312. First probe base, 313. Water nozzle, 314. Bottom wheel frame, 315. First probe group, 316. Water outlet, 317. Roller;

[0064] 321. Connecting bracket, 322. Probe stopper, 323. Second probe base, 324. Second probe group, 325. Ball bearing,

[0065] 41. Connecting rod assembly, 42. Buckle assembly, 43. Handle;

[0066] 411. first connecting rotating rod, 412. second connecting rotating rod, 413. third connecting rotating rod, 414. rotating rod, 415. first supporting rod, 416. second supporting rod, 417. rotating long axis;

[0067] 421. Hook fixing frame, 422. Hook bracket, 423. Hook, 424. Female buckle assembly, 425. Spacer block assembly, 426. Male buckle assembly, 427. Hook shaft, 428. Handle pin, 429. Hook handle. DETAILED DESCRIPTION

[0068] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this description, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0070] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] like Figure 1 A branch rail flaw detection vehicle shown is used for flaw detection of a branch rail 5, comprising:

[0072] The frame assembly 1 includes a vehicle frame and a track running wheel 11. The front-to-rear direction of the vehicle frame is set as the X direction, the left-to-right direction of the vehicle frame is set as the Y direction, and the height direction of the vehicle frame is set as the Z direction. The track running wheel 11 is arranged at the front and rear ends of the vehicle frame along the X direction.

[0073] The coupling agent assembly 2 is installed on the frame assembly 1 and is used to assist the probe assembly 3 in flaw detection;

[0074] The probe assembly 3 is installed on one side of the frame assembly 1 along the Y direction;

[0075] like Figure 2 to Figure 4 As shown, the probe assembly 3 includes a rail bottom flaw detection device 31 for detecting flaws on the bottom surface of the rail, and a side flaw detection device 32 for detecting flaws on the bottom side surface of the rail; the rail bottom flaw detection device 31 and the side flaw detection device 32 are respectively provided with magnets 33 for improving the coupling performance of the probe assembly 3 and the switch rail 4.

[0076] The rail bottom flaw detection device 31 includes a probe bracket connecting frame 311, on which a first probe base 312 is installed, and a first probe group 315 is provided on the first probe base 312 close to the branch rail 5; the side flaw detection device 32 includes a connecting bracket 321 and a second probe base 323, both ends of the second probe base 323 are connected to the probe bracket connecting frame 311 through the connecting bracket 321, and a second probe group 324 is provided on the second probe base 323 close to the branch rail 5.

[0077] The rail bottom flaw detection device 31 also includes a bottom wheel frame 314 installed at both ends of the probe bracket connecting frame 311, and a magnet 33 and a roller 317 are provided on the side of the bottom wheel frame 314 close to the branch rail 5; the side flaw detection device 32 also includes a probe limit block 322 installed on the bottom wheel frame 314, the probe limit block 322 is connected to the connecting bracket 321, and a magnet 33 and a ball 325 are provided on the side of the probe limit block 322 close to the branch rail 5.

[0078] The first probe group 315 and the second probe group 324 can set the number and type of probes according to usage requirements to improve the accuracy of flaw detection.

[0079] The first probe base 312 and the second probe base 323 respectively include a cover shell and a cover plate 34. A mounting post 35 is installed on the probe. The mounting post 35 passes through the cover plate 34. The portion of the mounting post 35 exposed from the cover plate 34 is provided with a threaded portion. A nut 36 is connected to the threaded portion. A spring 37 is sleeved on the mounting post 35. The spring 37 is located in the inner cavity of the cover shell. The probe detection portion is exposed from the cover shell. By turning the nut 36, the distance between the probe and the track can be adjusted, which is easy to operate.

[0080] like Figure 5 to Figure 7 As shown, this switch rail flaw detection vehicle also includes a folding assembly 4 for storing the probe assembly 3, and the folding assembly 4 includes a connecting rod assembly 41 and a hook assembly 42. The connecting rod assembly 41 and the hook assembly 42 are used together to store the probe assembly 3; the hook assembly 42 is installed on the frame assembly 1 along the Z direction, one end of the connecting rod assembly 41 is installed on the frame assembly 1, and the other end of the connecting rod assembly 41 is connected to the probe assembly 3, and the connecting rod assembly 41 is arranged along the Y direction.

[0081] The connecting rod assembly 41 includes two groups of connecting rods, which are arranged in parallel along the X-axis. Each group of connecting rods includes a first connecting rotating rod 411, a second connecting rotating rod 412, a third connecting rotating rod 413 and a rotating rod 414 that are connected in sequence. A first support rod 415 is installed between the two second connecting rotating rods 412, a second support rod 416 is installed between the two third connecting rotating rods 413, and the third connecting rotating rod 413 and the rotating rod 414 are pin-connected by a rotating long axis 417; the rotating rod 414 is connected to the probe assembly 3.

[0082] The hook assembly 42 includes a hook fixing frame 421 installed on the frame assembly 1 along the Z direction, a hook 423 for hanging the rotating long axis 417 is installed on the hook fixing frame 421, and hook brackets 422 for supporting the rotating long axis 417 are arranged on both sides of the hook 423; a female buckle assembly 424 is arranged below the hook 423, a male buckle assembly 426 matching the female buckle assembly 424 is arranged on the probe assembly 3, and the female buckle assembly 424 is installed on the hook fixing frame 421; a cushion block assembly 425 is arranged on the hook fixing frame 421, and the cushion block assembly 425 is arranged below the female buckle assembly 424.

[0083] A hook shaft 427 is provided between the two hook brackets 422 , the hook 423 is sleeved on the hook shaft 427 , the hook handle 429 is connected to the hook 423 via a handle pin 428 , and the hook handle 429 , the handle pin 428 and the hook 423 rotate synchronously.

[0084] like Figure 8 to Figure 10 As shown, the vehicle body frame includes a trolley lower main beam 12, and two track running wheels 11 are respectively installed at the front and rear ends of the trolley lower main beam 12 through a coding wheel frame 16; the trolley lower main beam 12 is provided with a front support frame 13 and a rear support frame 14 along the Z direction, and the front support frame 13 and the rear support frame 14 are arranged forward and backward along the X direction, a cross bar 15 is installed at the top of the front support frame 13, and a cross bar 15 is installed at the top of the rear support frame 14. A trolley upper main beam 17 is provided between the two cross bars 15, and an instrument frame 18 is installed on the trolley upper main beam 17. The first connecting rotating rod 411 is installed on the lower surface of the trolley lower main beam 12.

[0085] A large handle 19 is provided between the two cross bars 15 , and the large handle 19 is distributed along the Y direction on both sides of the main beam 17 of the trolley; a handle 111 is installed on one of the cross bars 15 , and the handle 111 is located above the rear support frame 14 .

[0086] A wheel 110 and a flip rotating shaft 117 are installed on the vehicle body frame. The flip rotating shaft 117 is arranged through the encoding wheel frame 16. The wheel 110 is installed on both ends of the flip rotating shaft 117 through the wheel frame. A flip frame 112 is connected between the two wheel frames to realize the synchronous action of the wheel frames; a flip assembly for flipping the wheel 110 is also installed on the vehicle body frame. The flip assembly includes a hook rotating long axis 113. The hook rotating long axis 113 is connected by a long axis and a short axis to form an L-shaped axis. The hook rotating long axis 113 is installed on the lower main beam 12 of the trolley through a hook frame, and a wheel hook 114 is installed on the long axis. The short axis is connected to a pull rope 115, and the pull rope 115 is connected to a pull rod 116, which is installed on a cross bar; a wheel hook frame 118 that matches the wheel hook 114 is installed on the wheel frame.

[0087] like Fig.11 As shown, the coupling agent assembly 2 includes a box body 21 installed on the vehicle body frame, a feeding port 22 is provided on the upper surface of the box body 21, a liquid outlet pipe 23 is installed on the lower surface of the box body 21, the liquid outlet pipe 23 is connected to a tee 24, one end of the tee 24 is connected to a main drain valve, and the other end of the tee 24 is connected to a liquid level pipe 26; the main drain valve is connected to a plurality of drain valves 25, each drain valve 25 is connected to a water nozzle 313 through a water pipe, the water nozzle 313 is installed on the first probe base 312, and the first probe base 312 is provided with a water outlet hole 316 connected to the water nozzle 313.

[0088] The working status of this switch rail flaw detection vehicle is as follows Fig.12As shown, the specific operations are as follows:

[0089] (1) Place the branch rail flaw detection vehicle on the branch rail 5 to be inspected, press the hook handle 429 to drive the hook 423 to rotate downward, and hold the handle 43 to unfold the folding assembly 4, place the rail bottom flaw detection device 31 and the side flaw detection device 32 on the track, and under the action of the magnet 33, the probe assembly 3 fits with the branch rail 5;

[0090] (2) Rotate the plate turning frame 112 to hang the wheel 110 on the wheel hook 114;

[0091] (3) The coupling agent passes through the water nozzle 313 and the water outlet 316 and falls on the detection area of ​​the branch rail 5. The operator pushes the handle 111, and the probe assembly 3 detects the defects of the branch rail 5;

[0092] (4) After the flaw detection is completed, lift the handle 43 upwards, retract the folding assembly 4, hang the rotating long axis 417 on the hook 423, and complete the storage of the probe assembly 3; lift the pull rod 116 upwards, and the pull rope 115 drives the hook rotating long axis 113 to rotate, and the wheel hook 114 rotates synchronously, so that the wheel hook frame 118 is disengaged from the wheel hook 114, and the wheel 110 is lowered.

[0093] In summary, the present invention is reasonably designed and has the following advantages:

[0094] (1) Efficient and accurate detection, the split probe assembly (rail bottom + side) combined with magnetic coupling realizes multi-area synchronous high-precision flaw detection and reduces the risk of missed detection;

[0095] (2) Strong adaptability, folding structure, flip wheel and modular probe design, can flexibly cope with complex turnout track directions and different working conditions;

[0096] (3) Convenient operation, ergonomic handles, quick storage and folding components, and automatic coupling agent supply system significantly reduce the intensity of manual intervention and improve work efficiency;

[0097] (4) Structural reliability, high-strength frame, double locking mechanism (hook + buckle) and buffer design ensure the durability and stability of the equipment in harsh environments;

[0098] (5) Economical, precise distribution of coupling agent and maintainable design reduce the cost of consumables and equipment maintenance frequency, and extend the service life;

[0099] (6) The present invention is significantly superior to traditional equipment in terms of detection accuracy, operating efficiency and environmental adaptability through integrated and modular design, and is particularly suitable for the high-frequency and high-reliability maintenance requirements of the railway system for switch tracks.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A branch rail flaw detection vehicle, used for flaw detection of branch rails (5), characterized by: include: The frame assembly (1) comprises a vehicle frame and track running wheels (11), wherein the front-to-rear direction of the vehicle frame is set as the X direction, the left-to-right direction of the vehicle frame is set as the Y direction, and the height direction of the vehicle frame is set as the Z direction. The track running wheels (11) are arranged at the front and rear ends of the vehicle frame along the X direction; A coupling agent assembly (2) is installed on the frame assembly (1) and is used to assist the probe assembly (3) in flaw detection; A probe assembly (3) is installed on one side of the frame assembly (1) along the Y direction; The probe assembly (3) comprises a rail bottom flaw detection device (31) for detecting flaws on the rail bottom surface, and a side flaw detection device (32) for detecting flaws on the rail bottom side surface; the rail bottom flaw detection device (31) and the side flaw detection device (32) are respectively provided with magnets (33) for improving the coupling performance between the probe assembly (3) and the turnout rail (4).

2. A turnout rail flaw detection vehicle according to claim 1, characterized in that: The rail bottom flaw detection device (31) comprises a probe support connecting frame (311), a first probe base (312) is mounted on the probe support connecting frame (311), and a first probe group (315) is provided on a side of the first probe base (312) close to the branch rail (5); The side flaw detection device (32) comprises a connecting bracket (321) and a second probe base (323), both ends of the second probe base (323) are connected to the probe bracket connecting frame (311) through the connecting bracket (321), and a second probe group (324) is provided on a side of the second probe base (323) close to the branch rail (5).

3. A turnout rail flaw detection vehicle according to claim 2, characterized in that: The rail bottom flaw detection device (31) also includes a bottom wheel frame (314) installed at both ends of the probe bracket connecting frame (311), and a magnet (33) and a roller (317) are provided on a side of the bottom wheel frame (314) close to the branch rail (5); The side flaw detection device (32) also includes a probe limit block (322) installed on the bottom wheel frame (314), the probe limit block (322) is connected to the connecting bracket (321), and a magnet (33) and a ball (325) are provided on a side of the probe limit block (322) close to the branch rail (5).

4. A switch rail flaw detection vehicle according to claim 1, characterized in that: The vehicle also comprises a folding assembly (4) for storing the probe assembly (3); the folding assembly (4) comprises a connecting rod assembly (41) and a hanging buckle assembly (42); the connecting rod assembly (41) and the hanging buckle assembly (42) are used together to store the probe assembly (3); the hanging buckle assembly (42) is mounted on the frame assembly (1) along the Z direction; one end of the connecting rod assembly (41) is mounted on the frame assembly (1); the other end of the connecting rod assembly (41) is connected to the probe assembly (3); and the connecting rod assembly (41) is arranged along the Y direction.

5. A switch rail flaw detection vehicle according to claim 4, characterized in that: The connecting rod assembly (41) comprises two groups of connecting rods, which are arranged in parallel in the X-axis direction. Each group of connecting rods comprises a first connecting rotating rod (411), a second connecting rotating rod (412), a third connecting rotating rod (413) and a rotating rod (414) which are connected in sequence. A first supporting rod (415) is installed between the two second connecting rotating rods (412), a second supporting rod (416) is installed between the two third connecting rotating rods (413), and the third connecting rotating rod (413) and the rotating rod (414) are pin-connected via a rotating long axis (417); the rotating rod (414) is connected to the probe assembly (3).

6. A switch rail flaw detection vehicle according to claim 5, characterized in that: The hook assembly (42) comprises a hook fixing frame (421) installed on the frame assembly (1) along the Z direction, a hook (423) for hanging a rotating long axis (417) is installed on the hook fixing frame (421), and hook brackets (422) for supporting the rotating long axis (417) are arranged on both sides of the hook (423); a female buckle assembly (424) is arranged below the hook (423), a male buckle assembly (426) matching with the female buckle assembly (424) is arranged on the probe assembly (3), and the female buckle assembly (424) is installed on the hook fixing frame (421); a cushion block assembly (425) is arranged on the hook fixing frame (421), and the cushion block assembly (425) is arranged below the female buckle assembly (424).

7. A switch rail flaw detection vehicle according to claim 1, characterized in that: The vehicle body frame comprises a trolley lower main beam (12), and two track running wheels (11) are respectively installed at the front and rear ends of the trolley lower main beam (12) through a coding wheel frame (16); the trolley lower main beam (12) is provided with a front support frame (13) and a rear support frame (14) along the Z direction, the front support frame (13) and the rear support frame (14) are arranged forward and backward along the X direction, a cross bar (15) is installed at the top end of the front support frame (13), and a cross bar (15) is installed at the top end of the rear support frame (14), a trolley upper main beam (17) is provided between the two cross bars (15), and an instrument frame (18) is installed on the trolley upper main beam (17).

8. A switch rail flaw detection vehicle according to claim 7, characterized in that: A large handle (19) is provided between the two cross bars (15), and the large handle (19) is distributed on both sides of the main beam (17) on the trolley along the Y direction; a handle (111) is installed on one of the cross bars (15), and the handle (111) is located above the rear support frame (14).

9. A switch rail flaw detection vehicle according to claim 7, characterized in that: The vehicle body frame is provided with a wheel (110) and a plate turning shaft (117), the plate turning shaft (117) is arranged through the coding wheel frame (16), the wheel (110) is installed at both ends of the plate turning shaft (117) through the wheel frame, and a plate turning frame (112) is connected between the two wheel frames to realize synchronous movement of the wheel frames; The vehicle body frame is also provided with a turning assembly for turning the wheel (110), the turning assembly comprising a hook rotating long axis (113), the hook rotating long axis (113) being connected by a long axis and a short axis to form an L-shaped axis, the hook rotating long axis (113) being installed on the lower main beam (12) of the trolley through a hook frame, a wheel hook (114) being installed on the long axis, the short axis being connected with a pull rope (115), the pull rope (115) being connected with a pull rod (116), and the pull rod (116) being installed on a cross bar; the wheel frame is provided with a wheel hook frame (118) matching with the wheel hook (114).

10. The switch rail flaw detection vehicle according to claim 1, characterized in that: The coupling agent assembly (2) comprises a box (21) mounted on a vehicle body frame, a feeding port (22) being provided on the upper surface of the box (21), a liquid outlet pipe (23) being installed on the lower surface of the box (21), the liquid outlet pipe (23) being connected to a tee (24), one end of the tee (24) being connected to a main drain valve, and the other end of the tee (24) being connected to a liquid level pipe (26); the main drain valve being connected to a plurality of drain valves (25), each drain valve (25) being connected to a water nozzle (313) via a water pipe, and the water nozzle (313) being installed on a rail bottom flaw detection device (31).

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