Weld joint detection device for track maintenance
By introducing adjustment and cleaning mechanisms into the track weld inspection device, the problems of limited detection range and impurity influence caused by probe fixation were solved, achieving high-precision weld inspection.
Patent Information
- Application Number
- CN202520041221.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-08
AI Technical Summary
In existing track weld inspection devices, the fixed probe limits the monitoring range, has poor detection capability for different types of defects, and dust and other impurities affect the accuracy during the inspection process.
A rail maintenance weld inspection device was designed, which includes an adjustment mechanism and a cleaning mechanism. The adjustment mechanism precisely adjusts the probe position and angle, and the cleaning mechanism removes impurities from the rail, ensuring effective ultrasonic wave incidence and uniform distribution of the coupling agent.
It improves the sensitivity and accuracy of weld inspection, enhances the ability to detect small defects, and reduces inspection errors.
Smart Images
Figure CN223770142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of track maintenance technology, and in particular to a weld inspection device for track maintenance. Background Technology
[0002] As the carrier of train operation, the condition of the track directly affects the safety and smoothness of train operation. Therefore, regular comprehensive inspection and maintenance of the track is crucial. Track welds are critical connection points in the track structure. During track laying, welding connects individual rails to form a continuous track line. The quality of the welds directly affects the overall structural integrity of the track. Weld inspection can promptly detect various defects within the welds, such as porosity, slag inclusions, lack of fusion, and cracks, thereby ensuring safe train operation.
[0003] In track weld inspection, ultrasonic testing is one of the most commonly used methods. Its principle involves the ultrasonic flaw detector's probe emitting ultrasonic waves into the weld. When these waves encounter defects or weld interfaces, they are reflected, and the flaw detector receives and analyzes the reflected waves. However, when using ultrasonic flaw detectors to inspect track welds, the fixed probe angle means the incident direction of the ultrasonic beam is also fixed. For complex shapes and structures like track welds, some areas may not be effectively inspected, as the appropriate incident angle cannot reach these areas. This limits the monitoring range and reduces the ability to detect different types of defects. Furthermore, dust and other impurities on the track can cause detection errors during the inspection process, further contributing to low accuracy. Utility Model Content
[0004] The purpose of this invention is to solve the problem that the fixed probe of the existing detection device leads to a limited monitoring range and poor detection capability for different types of defects, and to propose a weld seam detection device for track maintenance.
[0005] To achieve the above objectives, the present invention employs the following technology: a weld inspection device for track maintenance, comprising an ultrasonic main unit that travels along the track direction via a frame, a probe being mounted on the ultrasonic main unit, an adjustment mechanism for adjusting the position and angle of the probe being mounted on the bottom of the frame, and a cleaning mechanism for removing obstacles in the forward direction of the frame being mounted on the front end of the frame.
[0006] As a further description of the above technical solution: the adjustment mechanism includes a fixed frame fixed on the vehicle frame, and the fixed frame is provided with a slide that can move along a direction perpendicular to the movement direction of the vehicle frame via an adjustment screw, and the slide is provided with a mounting plate for fixing the probe.
[0007] As a further description of the above technical solution: the bottom of the slide is provided with a connecting seat, and the connecting seat is provided with a positioning screw hole. The mounting plate is hinged to the connecting seat through a clamping plate, and the clamping plate is provided with a positioning bolt that cooperates with the positioning screw hole.
[0008] As a further description of the above technical solution: the adjustment mechanism also includes a guide component;
[0009] The guide assembly includes connecting arms at both ends of the slide, and a scale plate passing through the fixing frame is provided at the end of the connecting arm away from the slide.
[0010] As a further description of the above technical solution: the cleaning mechanism includes a motor mounted on the front end of the frame via an installation component, and the output end of the motor is provided with fan blades that blow air toward the track.
[0011] As a further description of the above technical solution: a fixing plate is also provided on the output end of the motor, and a brush that contacts the track to be tested is provided on the fixing plate;
[0012] The output end of the motor is provided with a limiting nut that abuts against the fixed plate through the connecting end of the fixed plate.
[0013] As a further description of the above technical solution: the mounting assembly includes a positioning plate fixed on the vehicle frame, a reinforcing rib is provided between the positioning plate and the vehicle frame, and at least three pairs of mounting screw holes that cooperate with the motor base are provided on the positioning plate along its height direction.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0015] By adjusting the position of the probe, it can be precisely moved to different locations in the weld, improving the sensitivity and accuracy of defect detection. Angle adjustment allows the ultrasonic beam emitted by the probe to be incident at the optimal angle to the location where defects may exist inside the weld. A suitable incident angle helps to better receive reflected waves from defects, thereby obtaining more obvious reflected signals and improving the sensitivity and accuracy of defect detection.
[0016] By pre-cleaning the track surface of dust, rust and other impurities by the cleaning mechanism, the coupling agent can be more evenly distributed between the probe and the weld, reducing the reflection loss of ultrasonic waves at the interface, so that the ultrasonic waves can be transmitted into the weld more effectively, enhancing the flaw detection sensitivity, and enabling small defects to be detected accurately. Attached Figure Description
[0017] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;
[0018] Figure 2 A schematic diagram of the structure of the adjustment mechanism provided according to an embodiment of the present invention is shown;
[0019] Figure 3 A schematic diagram showing the connection between the slide and the mounting plate according to an embodiment of the present invention is shown;
[0020] Figure 4 A schematic diagram of the structure of the guide assembly provided according to an embodiment of the present invention is shown;
[0021] Figure 5 A schematic diagram of the cleaning mechanism provided according to an embodiment of the present invention is shown;
[0022] Figure 6 A partial structural schematic diagram according to an embodiment of the present utility model is shown;
[0023] Figure 7 A schematic diagram of the installation assembly provided according to an embodiment of the present invention is shown.
[0024] Legend:
[0025] 1. Frame; 2. Ultrasonic unit; 3. Probe; 4. Adjustment mechanism; 41. Fixing bracket; 42. Adjusting screw; 43. Slide; 431. Connecting seat; 432. Positioning screw hole; 44. Mounting plate; 441. Clamping plate; 442. Positioning bolt; 45. Guide assembly; 451. Connecting arm; 452. Scale plate; 5. Cleaning mechanism; 51. Mounting assembly; 511. Positioning plate; 512. Reinforcing rib; 513. Mounting screw hole; 52. Motor; 521. Connecting end; 522. Limit nut; 53. Fan blade; 54. Fixing plate; 55. Brush. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0027] Reference Figures 1-7 This embodiment provides a weld inspection device for track maintenance, including an ultrasonic host 2 that travels along the track direction via a frame 1. The ultrasonic host 2 is equipped with a probe 3. The bottom of the frame 1 is equipped with an adjustment mechanism 4 for adjusting the position and angle of the probe 3. The front end of the frame 1 is equipped with a cleaning mechanism 5 for removing obstacles in the forward direction of the frame 1.
[0028] In this invention, when inspecting rail welds, the chassis 1 is placed on the rail to be inspected. The traveling mechanism on the chassis 1 moves the inspection device along the rail. During the movement, the probe 3 of the ultrasonic host 2 emits ultrasonic waves into the weld. When the ultrasonic waves encounter defects or weld interfaces, they are reflected. The ultrasonic host 2 receives and analyzes the reflected waves, thereby achieving weld defect detection. The probe 3 can be adjusted in position and angle through the adjustment mechanism 4, allowing it to be precisely moved to different positions on the weld, improving the sensitivity and accuracy of defect detection. Furthermore, as the chassis 1 moves, the cleaning mechanism 5 cleans dust and other impurities in the direction of device movement, reducing ultrasonic wave reflection loss at the interface and improving detection accuracy.
[0029] Specifically, such as Figures 1-4 As shown, the adjustment mechanism 4 includes a fixed frame 41 fixed on the frame 1. The fixed frame 41 is provided with a slide 43 that can move in a direction perpendicular to the movement direction of the frame 1 via an adjusting screw 42. The slide 43 is provided with a mounting plate 44 for fixing the probe 3. The bottom of the slide 43 is provided with a connecting seat 431, and the connecting seat 431 is provided with a positioning screw hole 432. The mounting plate 44 is hinged to the connecting seat 431 via a clamping plate 441, and the clamping plate 441 is provided with a positioning bolt 442 that mates with the positioning screw hole 432.
[0030] When the position of probe 3 needs to be adjusted, the adjusting screw 42 on the fixing bracket 41 is rotated. As the adjusting screw 42 rotates, the sliding block 43 that is threaded onto the adjusting screw 42 moves linearly along the adjusting screw 42, thereby moving the probe 3 on the mounting plate 44. For some special welded joints, such as T-joints or corner joints, adjusting the position of probe 3 can ensure effective detection of areas prone to defects, such as the root and sides of the weld. When the angle of probe 3 needs to be adjusted, the positioning bolt 442 on the clamping plate 441 is loosened, allowing the clamping plate to... When the clamping force of 441 on the connecting seat 431 decreases, the position of the mounting plate 44 can be rotated to adjust the angle of the probe 3 on the mounting plate 44. Then, tighten the positioning bolt 442 to clamp and fix the connecting seat 431 with the clamping plate 441. Because different types of defects, such as pores, inclusions, and lack of fusion, have different reflection characteristics of ultrasonic waves, a suitable incident angle helps to better receive the reflected waves from the defects. Adjusting the angle of the probe 3 can make the ultrasonic beam perpendicular to the defect surface, thereby obtaining a more obvious reflected signal and improving the sensitivity and accuracy of defect detection.
[0031] It should be noted that the adjustment mechanism 4 also includes a guide assembly 45. The guide assembly 45 includes connecting arms 451 connected to both ends of the slide 43. A scale plate 452 passing through the fixing frame 41 is provided at the end of the connecting arm 451 away from the slide 43. Since the probes 3 are arranged on both sides of the frame 1, the scale plate 452 allows the movement distance of one set of probes 3 to be determined during probe 3 position adjustment. This enables precise adjustment of the other set of probes 3, allowing for precise positional movement of the probes 3 on both sides of the frame 1.
[0032] Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, the cleaning mechanism 5 includes a motor 52 mounted on the front end of the frame 1 via an installation assembly 51. The output end of the motor 52 is provided with a fan blade 53 that blows air toward the track. The output end of the motor 52 is also provided with a fixing plate 54, and the fixing plate 54 is provided with a brush 55 that contacts the track to be inspected. The output end of the motor 52 is provided with a limiting nut 522 that abuts against the fixing plate 54 via a connecting end 521 that passes through the fixing plate 54.
[0033] When the detection device moves on the track to be inspected, the motor 52 on the mounting assembly 51 starts and drives the fan blade 53 to rotate. Since the fixing plate 54 is also connected to the output shaft of the motor 52, the brush 55 on the fixing plate 54 will also rotate. The brush 55 contacts the track, and through the blowing of the fan blade 53 and the cleaning of the brush 55, the dust, rust and other impurities on the track surface can be cleaned in advance. The coupling agent can be more evenly distributed between the probe 3 and the weld, reducing the reflection loss of ultrasonic waves at the interface. Ultrasonic waves can be transmitted into the weld more effectively, enhancing the flaw detection sensitivity, so that small defects can also be accurately detected, thereby greatly improving the accuracy of the detection.
[0034] It should be noted that, as Figure 7 As shown, the mounting assembly 51 includes a positioning plate 511 fixed on the frame 1. A reinforcing rib 512 is provided between the positioning plate 511 and the frame 1. The positioning plate 511 has at least three pairs of mounting screw holes 513 along its height direction that cooperate with the base of the motor 52. The several pairs of mounting screw holes 513 can realize the adjustment of the height position of the motor 52. When dealing with different types of tracks, the height of the motor 52 can be adjusted to ensure that the brush 55 can effectively clean the track.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A weld detection device for track maintenance, characterized by, The application relates to a vehicle frame (1) for an ultrasonic host (2) walking along a track, wherein a probe (3) is arranged on the ultrasonic host (2), a regulating mechanism (4) for adjusting the position and angle of the probe (3) is arranged at the bottom of the vehicle frame (1), and a cleaning mechanism (5) for removing obstacles in the advancing direction of the vehicle frame (1) is arranged at the front end of the vehicle frame (1).
2. The weld detection device for rail maintenance according to claim 1, characterized by The regulating mechanism (4) comprises a fixing frame (41) fixed on the vehicle frame (1), a sliding seat (43) capable of moving along a direction perpendicular to the moving direction of the vehicle frame (1) is arranged on the fixing frame (41) through an adjusting screw rod (42), and a mounting plate (44) for fixing the probe (3) is arranged on the sliding seat (43).
3. The weld detection device for rail maintenance according to claim 2, characterized by The bottom of the sliding seat (43) is provided with a connecting seat (431), a positioning screw hole (432) is formed in the connecting seat (431), the mounting plate (44) is hinged to the connecting seat (431) through a clamping plate (441), and a positioning screw bolt (442) matched with the positioning screw hole (432) is arranged on the clamping plate (441).
4. The weld detection device for rail maintenance according to claim 2 or 3, characterized in that, The regulating mechanism (4) further comprises a guide assembly (45). The guide assembly (45) comprises connecting arms (451) connected to both ends of the sliding seat (43), and a scale plate (452) penetrating through the fixing frame (41) is arranged at the end of the connecting arm (451) away from the sliding seat (43).
5. The weld detection device for rail maintenance according to claim 1, characterized by The cleaning mechanism (5) comprises a motor (52) arranged at the front end of the vehicle frame (1) through a mounting assembly (51), and a fan blade (53) blowing towards the track direction is arranged on the output end of the motor (52).
6. The weld detection device for rail maintenance according to claim 5, wherein A fixing plate (54) is further arranged on the output end of the motor (52), and a brush (55) in contact with the track to be detected is arranged on the fixing plate (54). A connecting end head (521) penetrating through the fixing plate (54) is arranged on the output end of the motor (52), and a limiting nut (522) abutting against the fixing plate (54) is arranged on the connecting end head (521).
7. A weld detection device for rail maintenance according to claim 5 or 6, characterized in that The mounting assembly (51) comprises a positioning plate (511) fixed on the vehicle frame (1), a reinforcing rib plate (512) is arranged between the positioning plate (511) and the vehicle frame (1), and at least three pairs of mounting screw holes (513) matched with the base of the motor (52) are formed in the height direction of the positioning plate (511).