Flaw detector with high probe sensitivity

Abstract

The utility model discloses a flaw detector with high probe sensitivity, which comprises a flaw detector frame body, a coupling agent box body is arranged on the flaw detector frame body, two sides of the flaw detector frame body are respectively provided with a front turning plate and a rear turning plate, the bottom ends of the front turning plate, the rear turning plate and the flaw detector frame body are respectively provided with a plurality of high-sensitivity probes, a motor is arranged on the front turning plate, and a motor is arranged on the rear turning plate. The first bevel gear is driven by the motor to rotate, and the grinding steel brush can rotate on the surface of the steel rail through connection of the connecting shaft, the connecting disc and the spring, so that an oxide layer on the surface of the steel rail is ground and removed, roughness grinding is achieved, the smoothness of the surface of the steel rail is guaranteed, and the service life of the steel rail is prolonged. Through meshing of the first bevel gear and the second bevel gear, the fan blades rotate to form wind power, and through guiding of the wind deflector, chippings ground by the grinding steel brush are cleaned, and the surface chippings are prevented from being mixed with a subsequent coupling agent, so that the sensitivity of a probe in the flaw detection process of the flaw detector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail flaw detectors, in particular to a flaw detector with high probe sensitivity. 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] When the existing rail flaw detector performs flaw detection on the rail, an oxide layer is easily formed on the rail surface. If it is not cleaned in time, the sensitivity of the probe flaw detection will be reduced. In addition, the different roughness of the rail surface leads to uneven thickness of the coupling layer, which also easily reduces the sensitivity of the probe. Therefore, a flaw detector with high probe sensitivity is needed to meet the demand. Utility Model Content

[0004] The utility model aims to provide a flaw detector with high probe sensitivity to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flaw detector with high probe sensitivity, comprising a flaw detector frame, a coupling agent box is arranged on the flaw detector frame, a front flap and a rear flap are arranged on both sides of the flaw detector frame respectively, a plurality of high-sensitivity probes are arranged on the bottom end of the front flap, the rear flap and the flaw detector frame, a motor is arranged on the front flap, the output shaft of the motor is rotatably installed in the front flap, a first bevel gear is arranged on the output shaft of the motor, a connecting shaft is arranged on the bottom end of the first bevel gear, a connecting plate is arranged on the bottom end of the connecting shaft, a plurality of springs are arranged on the bottom end of the connecting plate, the same grinding steel brush is arranged on the bottom ends of the plurality of springs, a second bevel gear is vertically meshed with the first bevel gear, a fan blade is connected to the second bevel gear, and an air guide plate is arranged on the bottom end of the front flap, and the air guide plate gradually inclines toward the grinding steel brush from top to bottom.

[0006] Preferably, a dropper is provided in the front flap, the dropper is located between the air guide plate and the high-sensitivity probe, and the dropper is connected to the coupling agent box through a pipeline.

[0007] Preferably, a plurality of connecting columns are arranged on the bottom end of the front flap, and a same brush is arranged on the bottom ends of the plurality of connecting columns, and the brush is located between the dropper and the high-sensitivity probe.

[0008] Preferably, the polishing steel brush is provided with a plurality of slide bars, each of which is located inside a spring at a corresponding position, and the plurality of slide bars are slidably installed in the connecting disk.

[0009] Preferably, a baffle is provided on the top end of the slide rod, the outer diameter of the baffle is larger than the outer diameter of the slide rod, and the baffle is located above the connecting disk.

[0010] Preferably, a connecting plate is provided on the bottom end of the front flap, a rotating shaft is rotatably installed in the connecting plate, and two ends of the rotating shaft are respectively connected to the second bevel gear and the fan blade.

[0011] Preferably, side baffles are provided on both sides of the air guide plate close to the fan blades, and the side baffles extend toward the fan blades.

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

[0013] In the utility model, the first bevel gear is driven to rotate by a motor, and the connection of the connecting shaft, the connecting plate and the spring enables the grinding steel brush to rotate on the surface of the rail, thereby grinding and removing the oxide layer on the surface of the rail, and achieving roughness grinding to ensure the smoothness of the surface of the rail. The engagement between the first bevel gear and the second bevel gear enables the fan blade to rotate to form wind force, and the debris polished by the grinding steel brush is cleaned through the guidance of the wind guide plate, so as to prevent the surface debris from mixing with the subsequent coupling agent, thereby improving the sensitivity of the probe during the flaw detection process of the flaw detector.

[0014] In the utility model, the grinding steel brush grinds the surface of the rail and the fan blades clean dust and debris on the surface of the rail, thereby ensuring coupling between the coupling agent and the rail, and the coupling agent is evenly spread on the smooth surface of the rail through the application of the brush, thereby ensuring the uniformity of the coupling layer thickness and improving the sensitivity of the probe during flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a flaw detector with high probe sensitivity proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the front flap structure of a flaw detector with high probe sensitivity proposed by the utility model;

[0017] Figure 3 It is a schematic diagram of the side cross-sectional structure of the first bevel gear of a flaw detector with high probe sensitivity proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the front cross-sectional structure of a front flap of a flaw detector with high probe sensitivity proposed by the utility model;

[0019] Figure 5The utility model discloses a front-view planar structural diagram of a front flap of a flaw detector with high probe sensitivity.

[0020] In the figure: 1. flaw detector frame; 2. coupling agent box; 3. front flap; 4. rear flap; 5. high-sensitivity probe; 6. motor; 7. first bevel gear; 8. connecting shaft; 9. connecting plate; 10. spring; 11. grinding steel brush; 12. second bevel gear; 13. fan blade; 14. air guide plate; 15. dropper; 16. connecting column; 17. brush; 18. slide rod; 19. baffle; 20. connecting plate; 21. rotating shaft; 22. side baffle. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Figure 1-5 A flaw detector with high probe sensitivity comprises a flaw detector frame 1, a coupling agent box 2 is arranged on the flaw detector frame 1, a front flap 3 and a rear flap 4 are respectively arranged on both sides of the flaw detector frame 1, a plurality of high-sensitivity probes 5 are arranged on the front flap 3, the rear flap 4 and the bottom end of the flaw detector frame 1, a motor 6 is arranged on the front flap 3, the output shaft of the motor 6 is rotatably installed in the front flap 3, a first bevel gear 7 is arranged on the output shaft of the motor 6, a connecting shaft 8 is arranged on the bottom end of the first bevel gear 7, a connecting plate 9 is arranged on the bottom end of the connecting shaft 8, a plurality of springs 10 are arranged on the bottom end of the connecting plate 9, and the same grinding steel brush 11 is arranged on the bottom ends of the plurality of springs 10, a second bevel gear 12 is vertically meshed with the first bevel gear 7, a fan blade 13 is connected to the second bevel gear 12, and an air guide plate 14 is arranged on the bottom end of the front flap 3, and the air guide plate 14 gradually tilts toward the grinding steel brush 11 from top to bottom.

[0023] The first bevel gear 7 is driven to rotate by the motor 6, and the grinding steel brush 11 is connected with the connecting shaft 8, the connecting plate 9 and the spring 10 to rotate on the surface of the rail, so that the oxide layer on the surface of the rail is polished and removed, and the roughness is polished to ensure the smoothness of the rail surface. The engagement between the first bevel gear 7 and the second bevel gear 12 causes the fan blade 13 to rotate to form wind force. The debris polished by the grinding steel brush 11 is cleaned through the guidance of the wind guide plate 14 to prevent the surface debris from mixing with the subsequent coupling agent, thereby improving the sensitivity of the probe during the flaw detector detection process, and the elastic force of the compressed spring 10 allows the grinding steel brush 11 to always be in contact with the surface of the rail to prevent separation caused by wear.

[0024] Specifically, in this embodiment, a dropper 15 is provided in the front flap 3, and the dropper 15 is located between the wind guide plate 14 and the high-sensitivity probe 5. The dropper 15 is connected to the coupling agent box 2 through a pipeline. The dropper 15 drops the coupling agent inside the coupling agent box 2 onto the rail to facilitate subsequent flaw detection.

[0025] Specifically, in this embodiment, a plurality of connecting columns 16 are provided on the bottom end of the front flap 3, and a same brush 17 is provided on the bottom ends of the plurality of connecting columns 16. The brush 17 is located between the dropper 15 and the high-sensitivity probe 5. Through the application of the brush 17, the coupling agent is evenly applied on the smooth surface of the rail, thereby ensuring the average thickness of the coupling layer and further improving the sensitivity of the probe during flaw detection.

[0026] Specifically, in this embodiment, a plurality of slide rods 18 are provided on the grinding steel brush 11, each slide rod 18 is located inside the spring 10 at a corresponding position, and the plurality of slide rods 18 are slidably installed in the connecting disk 9. The slide rod 18 provides a vertical movement guide for the movement of the grinding steel brush 11, and improves the integrity between the connecting disk 9 and the grinding steel brush 11, so that the connecting disk 9 can smoothly drive the grinding steel brush 11 to rotate.

[0027] Specifically, in this embodiment, a baffle 19 is provided on the top of the slide bar 18 . The outer diameter of the baffle 19 is larger than the outer diameter of the slide bar 18 and is located above the connecting disk 9 . The baffle 19 prevents the slide bar 18 from separating from the connecting disk 9 .

[0028] Specifically, in this embodiment, a connecting plate 20 is provided on the bottom end of the front flap 3, and a rotating shaft 21 is rotatably installed in the connecting plate 20. The two ends of the rotating shaft 21 are respectively connected to the second bevel gear 12 and the fan blade 13. The connecting plate 20 and the rotating shaft 21 provide positioning for the second bevel gear 12 to ensure the meshing between the second bevel gear 12 and the first bevel gear 7.

[0029] Specifically, in the present embodiment, side baffles 22 are provided on both sides of the air guide plate 14 close to the fan blades 13. The side baffles 22 extend toward the fan blades 13. The side baffles 22 prevent the wind force generated by the fan blades 13 from being lost from both sides of the air guide plate 14, thereby effectively guiding the wind force to the contact surface between the grinding steel brush 11 and the rail.

[0030] 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 high probe sensitivity, comprising a flaw detector frame (1), characterized in that: The flaw detector frame (1) is provided with a coupling agent box (2), and the two sides of the flaw detector frame (1) are respectively provided with a front flap (3) and a rear flap (4), and the front flap (3), the rear flap (4) and the bottom end of the flaw detector frame (1) are provided with a plurality of high-sensitivity probes (5), and the front flap (3) is provided with a motor (6), the output shaft of the motor (6) is rotatably mounted in the front flap (3), and the output shaft of the motor (6) is provided with a first bevel gear (7), and the bottom end of the first bevel gear (7) is provided with a A connecting shaft (8) is provided at the bottom end of the connecting shaft (8), a connecting plate (9) is provided at the bottom end of the connecting plate (9), a plurality of springs (10) are provided at the bottom end of the plurality of springs (10), a same grinding steel brush (11) is provided at the bottom end of the plurality of springs (10), a second bevel gear (12) is vertically meshed with the first bevel gear (7), a fan blade (13) is connected to the second bevel gear (12), and a wind guide plate (14) is provided at the bottom end of the front flap (3), and the wind guide plate (14) is gradually inclined from top to bottom toward the grinding steel brush (11).

2. A flaw detector with high probe sensitivity according to claim 1, characterized in that: A dropper (15) is arranged inside the front flap (3); the dropper (15) is located between the wind guide plate (14) and the high-sensitivity probe (5); and the dropper (15) is connected to the coupling agent box (2) through a pipeline.

3. A flaw detector with high probe sensitivity according to claim 1, characterized in that: A plurality of connecting columns (16) are arranged on the bottom end of the front flap (3), and a same brush (17) is arranged on the bottom ends of the plurality of connecting columns (16), and the brush (17) is located between the dropper (15) and the high-sensitivity probe (5).

4. A flaw detector with high probe sensitivity according to claim 1, characterized in that: The grinding steel brush (11) is provided with a plurality of slide bars (18), each of which is located inside the spring (10) at a corresponding position, and the plurality of slide bars (18) are slidably mounted inside the connecting plate (9).

5. A flaw detector with high probe sensitivity according to claim 4, characterized in that: A baffle (19) is provided on the top end of the slide bar (18). The outer diameter of the baffle (19) is larger than the outer diameter of the slide bar (18) and is located above the connecting plate (9).

6. A flaw detector with high probe sensitivity according to claim 1, characterized in that: A connecting plate (20) is provided at the bottom end of the front flap (3), a rotating shaft (21) is rotatably mounted in the connecting plate (20), and two ends of the rotating shaft (21) are respectively connected to the second bevel gear (12) and the fan blade (13).

7. A flaw detector with high probe sensitivity according to claim 1, characterized in that: Side baffles (22) are provided on both sides of the wind guide plate (14) close to the fan blades (13), and the side baffles (22) extend toward the fan blades (13).

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