Flaw detector with strong anti-interference capability

Abstract

The utility model discloses a flaw detector with strong anti-interference capability, which comprises a flaw detector frame body, a coupling agent box body is arranged on the flaw detector frame body, a first chamber is arranged in the coupling agent box body, a first water pump is arranged in the first chamber, a second chamber is arranged in the coupling agent box body, and a second water pump is arranged in the second chamber. A first cavity and a second cavity are formed in the couplant box body, a front turning plate and a rear turning plate are movably connected to the two sides of the flaw detector frame body respectively, and a plurality of probes are arranged at the bottom end of the front turning plate, the bottom end of the rear turning plate and the bottom end of the flaw detector frame body respectively. And through the connection between the first water pump and the first dropper and the connection between the second water pump and the second dropper, the coupling agents with different viscosities can be independently discharged, so that proper coupling agents can be selected according to different surface roughness of the steel rail, and the anti-interference performance of the steel rail flaw detector is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail flaw detectors, in particular to a flaw detector with strong anti-interference ability. Background Art

[0002] Rail flaw detector refers to an instrument that detects hidden flaws inside the rail or small cracks on the surface, especially the damage to the rail covered by the plywood. According to the working principle of flaw detection, it is divided into two categories: electromagnetic flaw detection and ultrasonic flaw detection. Ultrasonic flaw detectors are widely used in Chinese railways. Ultrasonic waves can propagate at different speeds in solids and liquids, but can hardly propagate in the air. When ultrasonic waves are emitted into rails with core scratches, cracks or other damages, they are blocked at the contact section between the solid and the air, generating reflected waves.

[0003] Before the rail flaw detector performs ultrasonic flaw detection, a coupling agent needs to be applied to the surface of the rail. In the prior art, the coupling agent is applied by dripping, so that the coupling agent cannot be evenly applied to the rail surface, causing interference with the ultrasonic flaw detection of the probe. In addition, the viscosity of the coupling agent required varies depending on the roughness of the rail surface. The use of an inappropriate coupling agent can easily cause interference with the ultrasonic flaw detection of the probe, resulting in errors. Therefore, a flaw detector with strong anti-interference ability is needed to meet people's needs. Utility Model Content

[0004] The purpose of the utility model is to provide a flaw detector with strong anti-interference ability to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flaw detector with strong anti-interference ability, including a flaw detector frame, a coupling agent box body is arranged on the flaw detector frame, a first chamber is opened in the coupling agent box body, a first water pump is arranged in the first chamber, a second chamber is opened in the coupling agent box body, and a second water pump is arranged in the second chamber, a front flap and a rear flap are movably connected on both sides of the flaw detector frame, a plurality of probes are arranged on the front flap, the rear flap and the bottom end of the flaw detector frame, a first dropper and a second dropper are arranged in sequence in one end of the front flap away from the flaw detector frame, the first dropper is connected to the first water pump, the second dropper is connected to the second water pump, a first scraping mechanism and a second scraping mechanism are arranged on the bottom end of the front flap, the first scraping mechanism and the second scraping mechanism are both located between the probe and the second dropper, the first scraping mechanism and the second scraping mechanism are both inclined and symmetrically distributed with each other.

[0006] Preferably, the first scraping mechanism and the second scraping mechanism both include a U-shaped frame, which is connected to the bottom end of the front flap, and two springs are arranged on the bottom end of the U-shaped frame. The bottom ends of the two springs are provided with the same connecting piece, and a scraper is movably mounted on the bottom end of the connecting piece.

[0007] Preferably, a partition is welded in the coupling agent box, and the first chamber and the second chamber are respectively located on both sides of the partition.

[0008] Preferably, a feed port is provided on the top of the first chamber and the second chamber, an externally threaded bottle mouth is provided at the feed port, and an internally threaded bottle cap is threadedly connected to the externally threaded bottle mouth.

[0009] Preferably, two sliding rods are provided on the top end of the connecting member, the two sliding rods are respectively located inside the springs at corresponding positions, and the two sliding rods are both slidably installed in the bottom end of the U-shaped frame.

[0010] Preferably, a support sheet is provided on the top end of the slide bar, the outer diameter of the support sheet is larger than the outer diameter of the slide bar, and the support sheet is located inside the U-shaped frame.

[0011] Preferably, a T-slot is provided on the bottom end of the connector, the T-slot passes through one end of the connector but not completely through the other end of the connector, a T-block is slidably adapted in the T-slot, and the scraper is mounted on the bottom end of the T-block.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, the first chamber and the second chamber are opened in the coupling agent box, so that the coupling agents with different viscosities can be stored, and the coupling agents with different viscosities can be discharged independently through the connection between the first water pump and the first dropper, and the connection between the second water pump and the second dropper, so that the appropriate coupling agent can be selected according to the different surface roughness of the rail, thereby improving the anti-interference performance of the rail flaw detector.

[0014] In the utility model, the coupling agent is dripped on the surface of the rail, and the flaw detector frame moves forward, so that the first scraping mechanism and the second scraping mechanism apply the coupling agent forward, and the first scraping mechanism and the second scraping mechanism, which are symmetrically inclined to each other, apply the coupling agent to both sides of the rail, thereby increasing the application area of ​​the coupling agent on the surface of the rail, effectively preventing the problem of error in probe flaw detection monitoring, and further enhancing the anti-interference performance of the rail flaw detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a flaw detector with strong anti-interference capability proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the coupling agent box structure of a flaw detector with strong anti-interference ability proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the side cross-sectional structure of an externally threaded bottle mouth of a flaw detector with strong anti-interference capability proposed by the utility model;

[0018] Figure 4 It is a schematic diagram of the side cross-sectional structure of a first water pump of a flaw detector with strong anti-interference capability proposed by the utility model;

[0019] Figure 5 This is a schematic diagram of the front flap structure of a flaw detector with strong anti-interference ability proposed by the utility model;

[0020] Figure 6 It is a side view cross-sectional structural diagram of a second scraping mechanism of a flaw detector with strong anti-interference capability proposed by the utility model;

[0021] Figure 7 The utility model discloses a side cross-sectional structural diagram of a connector of a flaw detector with strong anti-interference capability.

[0022] In the figure: 1. flaw detector frame; 2. coupling agent box; 3. first chamber; 4. first water pump; 5. second chamber; 6. second water pump; 7. front flap; 8. rear flap; 9. probe; 10. first dropper; 11. second dropper; 12. first scraping mechanism; 13. second scraping mechanism; 14. U-shaped frame; 15. spring; 16. connecting piece; 17. scraper; 18. partition; 19. feed port; 20. external thread bottle mouth; 21. internal thread bottle cap; 22. slide rod; 23. support sheet; 24. T-slot; 25. T-block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-7 A flaw detector with strong anti-interference ability includes a flaw detector frame 1, a coupling agent box 2 is arranged on the flaw detector frame 1, a first chamber 3 is opened in the coupling agent box 2, a first water pump 4 is arranged in the first chamber 3, a second chamber 5 is opened in the coupling agent box 2, a second water pump 6 is arranged in the second chamber 5, a front flap 7 and a rear flap 8 are movably connected on both sides of the flaw detector frame 1, and a plurality of probes 9 are arranged on the front flap 7, the rear flap 8 and the bottom of the flaw detector frame 1 A first dropper 10 and a second dropper 11 are sequentially arranged in one end of the front flap 7 away from the flaw detector frame 1, the first dropper 10 is connected to the first water pump 4, the second dropper 11 is connected to the second water pump 6, and a first scraping mechanism 12 and a second scraping mechanism 13 are arranged on the bottom end of the front flap 7, the first scraping mechanism 12 and the second scraping mechanism 13 are both located between the probe 9 and the second dropper 11, and the first scraping mechanism 12 and the second scraping mechanism 13 are both inclined and symmetrically distributed with each other.

[0025] The first chamber 3 and the second chamber 5 store coupling agents with high viscosity and low viscosity, respectively. When the surface of the rail is smooth, the coupling agent with low viscosity in the second chamber 5 is selected, the power supply of the second water pump 6 is started, and the coupling agent with low viscosity in the second chamber 5 is dripped onto the surface of the rail through the second dropper 11. When the surface of the rail is rough, the coupling agent with high viscosity in the first chamber 3 is selected, the power supply of the first water pump 4 is started, and the coupling agent with high viscosity in the first chamber 3 is dripped onto the surface of the rail through the first dropper 10. When the flaw detector frame 1 moves forward along the direction of the front flap 7, the coupling agent first drips onto the rail, and the first scraping mechanism 12 and the second scraping mechanism 13, which are symmetrically inclined to each other, apply the coupling agent forward while driving the coupling agent to both sides of the rail, so that the contact area between the coupling agent and the surface of the rail becomes larger, which effectively avoids the problem of errors in flaw detection by the probe 9 and improves the anti-interference performance of the rail flaw detector.

[0026] Specifically, in the present embodiment, the first scraping mechanism 12 and the second scraping mechanism 13 both include a U-shaped frame 14, which is connected to the bottom end of the front flap 7, and two springs 15 are provided on the bottom end of the U-shaped frame 14, and the same connecting member 16 is provided on the bottom ends of the two springs 15, and a scraper 17 is movably mounted on the bottom end of the connecting member 16, and the elastic force of the spring 15 enables the bottom end of the scraper 17 to always be in contact with the surface of the rail, thereby avoiding the friction between the scraper 17 and the rail, which causes the thickness of the scraper 17 to be reduced, and the coupling agent cannot be driven away smoothly.

[0027] Specifically, in this embodiment, a partition 18 is welded inside the coupling agent box 2, and the first chamber 3 and the second chamber 5 are respectively located on both sides of the partition 18. The partition 18 ensures that the first chamber 3 and the second chamber 5 are not connected to each other, thereby preventing coupling agents of different viscosities from mixing.

[0028] Specifically, in the present embodiment, a feed port 19 is provided on the top of the first chamber 3 and the second chamber 5, an externally threaded bottle mouth 20 is provided at the feed port 19, and an internally threaded bottle cap 21 is threadedly connected to the externally threaded bottle mouth 20, so that coupling agents of different viscosities can be added and prevented from contacting with the outside world, which may cause viscosity changes.

[0029] Specifically, in this embodiment, two sliding rods 22 are provided on the top of the connecting member 16. The two sliding rods 22 are respectively located inside the springs 15 at corresponding positions. The two sliding rods 22 are both slidably installed in the bottom end of the U-shaped frame 14. The sliding rods 22 provide vertical movement guides for the connecting member 16 to prevent lateral deformation of the spring 15.

[0030] Specifically, in this embodiment, a support plate 23 is provided on the top of the slide rod 22. The outer diameter of the support plate 23 is larger than the outer diameter of the slide rod 22. The support plate 23 is located inside the U-shaped frame 14. The support plate 23 prevents the slide rod 22 from separating from the U-shaped frame 14, and provides a lowest limit for the slide rod 22.

[0031] Specifically, in this embodiment, a T-slot 24 is provided on the bottom end of the connecting member 16. The T-slot 24 passes through one end of the connecting member 16 but does not completely pass through the other end of the connecting member 16. A T-block 25 is slidably adapted in the T-slot 24. The scraper 17 is installed on the bottom end of the T-block 25. The cooperation between the T-slot 24 and the T-block 25 enables the scraper 17 to be replaced after wear.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A flaw detector with strong anti-interference capability, comprising a flaw detector frame (1), characterized in that: The flaw detector frame (1) is provided with a coupling agent box (2), a first chamber (3) is provided in the coupling agent box (2), a first water pump (4) is provided in the first chamber (3), a second chamber (5) is provided in the coupling agent box (2), a second water pump (6) is provided in the second chamber (5), a front flap (7) and a rear flap (8) are movably connected on both sides of the flaw detector frame (1), a plurality of probes (9) are provided on the front flap (7), the rear flap (8) and the bottom end of the flaw detector frame (1), and the front flap (7) is away from the probe. A first dropper (10) and a second dropper (11) are sequentially arranged in one end of the injury instrument frame (1); the first dropper (10) is connected to a first water pump (4); the second dropper (11) is connected to a second water pump (6); a first scraping mechanism (12) and a second scraping mechanism (13) are arranged on the bottom end of the front flap (7); the first scraping mechanism (12) and the second scraping mechanism (13) are both located between the probe (9) and the second dropper (11); the first scraping mechanism (12) and the second scraping mechanism (13) are both inclined and symmetrically distributed with respect to each other.

2. According to claim 1, a flaw detector with strong anti-interference ability is characterized in that: The first scraping mechanism (12) and the second scraping mechanism (13) both comprise a U-shaped frame (14), the U-shaped frame (14) being connected to the bottom end of the front flap (7), two springs (15) being arranged at the bottom end of the U-shaped frame (14), a common connecting member (16) being arranged at the bottom end of the two springs (15), and a scraper (17) being movably mounted at the bottom end of the connecting member (16).

3. A flaw detector with strong anti-interference ability according to claim 1, characterized in that: A partition plate (18) is welded inside the coupling agent box (2), and the first chamber (3) and the second chamber (5) are respectively located on both sides of the partition plate (18).

4. A flaw detector with strong anti-interference capability according to claim 1, characterized in that: A feed port (19) is provided at the top of the first chamber (3) and the second chamber (5), an externally threaded bottle mouth (20) is provided at the feed port (19), and an internally threaded bottle cap (21) is threadedly connected to the externally threaded bottle mouth (20).

5. The flaw detector with strong anti-interference ability according to claim 2, characterized in that: Two slide bars (22) are arranged on the top end of the connecting member (16), and the two slide bars (22) are respectively located inside the springs (15) at corresponding positions, and the two slide bars (22) are both slidably installed inside the bottom end of the U-shaped frame (14).

6. A flaw detector with strong anti-interference capability according to claim 5, characterized in that: A support sheet (23) is arranged on the top end of the slide bar (22), the outer diameter of the support sheet (23) is larger than the outer diameter of the slide bar (22), and the support sheet (23) is located inside the U-shaped frame (14).

7. A flaw detector with strong anti-interference capability according to claim 2, characterized in that: A T-shaped groove (24) is provided on the bottom end of the connecting member (16), the T-shaped groove (24) passes through one end of the connecting member (16) but does not completely pass through the other end of the connecting member (16), a T-shaped block (25) is slidably adapted in the T-shaped groove (24), and the scraper (17) is mounted on the bottom end of the T-shaped block (25).

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