Switch rail bottom scanning device

Abstract

The utility model discloses a switch rail bottom scanning device which comprises a telescopic rod, a universal joint is installed at the bottom of the telescopic rod, and the other end of the universal joint is fixedly connected to the upper portion of a top face scanning assembly. The top surface scanning assembly is provided with a top surface probe set and is located above the top surface of the rail bottom during use, the scanning surface of the top surface probe set is attached to the top surface of the rail bottom, a connecting piece is arranged on the outer side of the top surface scanning assembly, a side surface scanning assembly is arranged below the connecting piece and is located on the outer side of the rail bottom during use, and a side surface probe set is arranged on the side surface scanning assembly. The scanning surface of the side surface probe group is attached to the rail bottom side surface; an encoding assembly is arranged in the middle of the top face scanning assembly and comprises an encoder and an encoding wheel, and the encoding wheel makes contact with the top face of the rail bottom in use. And a coupling agent brushing assembly is arranged at the front end of the top surface scanning assembly. The coupling agent brushing assembly comprises a liquid storage box and a brush.

Description

Technical Field

[0001] The utility model relates to the technical field of railway track flaw detection, in particular to a point rail bottom scanning device. Background Art

[0002] Rail flaw detectors have long realized B-type imaging detection, while traditional turnout flaw detection operations are still at the A-type imaging stage. The two sides of the rail bottom are blind areas for flaw detection, and the outer side of the bottom corner of the pointed rail is prone to damage, which is the key part of flaw detection. The CTS-1010 flaw detector is usually used on site to manually inspect the rails and the bottom of the pointed rails. Operators need to squat and move in a small range for a long time. Due to the backward A-type imaging detection technology, operators are prone to numbness of legs and feet, dizziness and other physical discomfort, and the overall work intensity and physical fatigue are very high. In addition, the efficiency of damage identification is relatively low, and the traceability of detection data is poor. Operators are also required to have a good level of skills and a sense of responsibility, otherwise it is easy to miss detection, misjudge damage, etc., and there is a serious safety hazard of broken rails.

[0003] In the existing flaw detection equipment, for example, the Chinese invention patent with patent number ZL202210953690.7 discloses a portable rail bottom scanning method, which realizes a comprehensive detection of the lateral width of the rail bottom by driving a single transmitting probe and a single receiving probe to move in opposite directions along the length direction of the rail while being close to the two rail bottom sides respectively; at the same time, through each single receiving probe that is close to the top surface of the rail bottom and has different deflections to the length direction of the rail, the edge of the rail bottom foot, the rail bottom angle, and the junction area between the rail bottom and the rail waist are scanned and inspected, so as to realize the scanning of different areas of the rail bottom weld. Although this patent can scan the rail bottom, it is only applicable to rails with unchanged cross-sections such as basic rails, while the two sides of the rail bottom of the pointed rail are asymmetrical, and the width of the top of the pointed rail changes. This patent is not applicable to the scanning of the rail bottom of the pointed rail.

[0004] For example, the Chinese invention patent with patent number ZL201811521058.5 discloses a self-adaptive eddy current detection device and method for cracks at the bottom edge of a turnout rail. It adopts an electromagnetic eddy current array method and utilizes the lift-off compensation function and non-directional detection characteristics of the orthogonal array eddy current sensor to realize crack defect detection on the bottom side and upper and lower surfaces of the turnout rail. This patent also has the following problems: 1. The scanning of the eddy current sensor is affected by the surface state of the object. The detection accuracy of objects with relatively rough surfaces such as the bottom of the rail is not high; 2. The modules for the top surface detection and side surface detection of the bottom of the rail are fixed by hinged joints, and the scanning accuracy will also be affected by the adjustment of the hinged joints; and in the process of pushing the scanning device, a certain thrust will be applied to the scanning device. When the angle of change of the hinged joint under pressure is small, it is difficult for the staff to find it, resulting in reduced scanning accuracy; 3. There may be dust accumulation, fallen leaves, ballast stones and other debris on the bottom of the rail, which needs to be manually cleaned before scanning. In order to improve the detection accuracy, a coupling agent needs to be applied to the bottom of the rail. Before the device works, the bottom of the rail needs to be cleaned and the coupling agent applied, which has low work efficiency. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a device for scanning the bottom of a pointed rail.

[0006] The utility model is realized by the following technical solutions:

[0007] A pointed rail bottom scanning device, comprising:

[0008] A telescopic rod (1) capable of being telescopically adjusted in length;

[0009] A universal joint (2), one end of which is arranged at the bottom of the telescopic rod (1) and the other end of which is fixedly connected above the top surface scanning component (3) and is used to adjust the operating angle of the telescopic rod (1);

[0010] A top surface scanning assembly (3) is provided with a top surface probe group (32), which is located above the top surface of the rail bottom when in use, and the scanning surface of the top surface probe group (32) is in contact with the top surface of the rail bottom, and is used to scan the pointed rail (9) from the top surface of the rail bottom;

[0011] A connecting member (4) is arranged outside the top surface scanning assembly (3) and is used to connect the top surface scanning assembly (3) and the side surface scanning assembly (5);

[0012] A side scanning assembly (5) is arranged below the connecting member (4) and is located outside the rail bottom when in use. A side probe group (52) is arranged on the side scanning assembly (55). The scanning surface of the side probe group (52) is in contact with the side surface of the rail bottom and is used to scan the pointed rail (9) from the side surface of the rail bottom.

[0013] The encoding assembly (6) is arranged in the middle of the top surface scanning assembly (3), and comprises an encoder (61) and an encoding wheel (62). When in use, the encoding wheel (62) contacts the top surface of the rail bottom and is used to record the position information of the scanning device on the pointed rail (9);

[0014] The coupling agent brushing component (7) is arranged at the front end of the top surface scanning component (3) and is used for brushing the coupling agent (721) on the top surface of the rail bottom.

[0015] Furthermore, both sides of the top surface scanning assembly (3) and the side surface scanning assembly (5) are provided with limit slide grooves (301), and the probes of the top surface probe group (32) and the side surface probe group (52) are arranged in the corresponding limit slide grooves (301);

[0016] The top probe group (32) and the side probe group (52) are both provided with an adaptive adjustment component (8), and the adaptive adjustment component (8) includes:

[0017] A limit bolt (81) with a threaded end mounted on the back of the probe, the head of the limit bolt (81) of the top probe group (32) passes upward through the top of the top scanning assembly (3), and the head of the limit bolt (81) of the side probe group (52) passes outward through the outside of the side scanning assembly (5);

[0018] The spring (82) is coaxially arranged on the limiting bolt (81), one end of which abuts against the back of the probe and the other end of which abuts against the mounting groove of the corresponding probe.

[0019] Furthermore, the coupling agent coating assembly (7) comprises:

[0020] A mounting plate (71), one end of which is mounted on the front end of the top surface scanning assembly (3) and the other end of which extends forward from the top surface scanning assembly (3);

[0021] A liquid storage box (72) is arranged above the front end of the mounting plate (71), wherein the liquid storage box (72) stores a coupling agent (721), and a plurality of liquid leakage holes (722) are arranged at the connection between the liquid storage box (72) and the brush (73);

[0022] The brush (73) is arranged below the liquid storage box (72), and the bottom of the brush (73) contacts the top surface of the rail bottom when in use.

[0023] Furthermore, the top surface scanning component (3) comprises:

[0024] Top surface mounting seat (31);

[0025] A top surface probe group (32) includes two probes, which are respectively arranged at two ends of the top surface mounting seat (31);

[0026] Four top surface running wheels (33) are respectively arranged on both sides of the top surface mounting seat (31); when in use, the four top surface running wheels (33) are in contact with the top surface of the rail bottom, and the lowest points of the four top surface running wheels (33) and the lowest point of the encoding wheel (62) are located in the same plane;

[0027] At least one top surface adsorption magnet (34) is arranged at the bottom of the top surface mounting seat (31).

[0028] Furthermore, there is a certain angle between the two probes of the top surface probe group (32) and the extension direction of the rail, and the angle range is 10-30°.

[0029] Furthermore, the side scanning component (5) comprises:

[0030] A side mounting seat (51) is mounted on the bottom of the connecting member (4);

[0031] A side probe group (52), comprising two probes, which are respectively arranged at two ends of the side mounting seat (51);

[0032] Two side running wheels (53) are transversely arranged on one side of the side mounting seat (51) close to the top surface scanning assembly (3), and when in use, the side running wheels (53) are in contact with the side surface of the rail bottom;

[0033] At least one side adsorption magnet (54) is arranged on a side of the side mounting seat (51) close to the top surface scanning assembly (3).

[0034] Furthermore, a certain distance is provided between the top surface adsorption magnet (34), the side surface adsorption magnet (54) and the corresponding bottom surface of the pointed rail (9), and the distance does not exceed 1.5 mm.

[0035] Furthermore, the connecting member (4) is of an "L"-shaped structure, and a certain deflection angle is arranged in the vertical direction of the connecting member (4) toward the transverse direction, and the deflection angle is adapted to the slope of the bottom top surface of the pointed rail (9).

[0036] The working principle of this utility model:

[0037] The utility model combines the top surface scanning and side scanning of the rail bottom of the pointed rail (9) through a top surface scanning component (3) and a side surface scanning component (5), and pushes the scanning device through a telescopic rod (1) above the top surface scanning component (3). The top surface scanning component (3) is arranged with two probes that are a certain distance away from the edge of the rail bottom and face forward and backward, and the probes are arranged outward at a specific angle along the length direction of the pointed rail, so that the ultrasonic wave is incident from the top surface of the rail bottom, and the lower end corner area of ​​the rail bottom angle is detected by a primary wave, and then the upper end corner area of ​​the rail bottom angle is detected by a secondary wave formed after being reflected by the bottom surface of the rail bottom. The side surface scanning component (5) is arranged with two probes that face forward and backward and are parallel to the side of the rail bottom angle, so that the ultrasonic wave is incident from the outer side of the rail bottom, and the inner end corner area of ​​the rail bottom of the pointed rail is detected by a primary wave. The probes of the top probe group (32) and the side probe group (52) are installed in the limiting slide groove (301), and the back of the probes are provided with compression springs (82) and limiting bolts (81) to maintain appropriate pressure between the probes and the scanning surface of the rail foot to ensure good coupling. The top scanning assembly (3) and the side scanning assembly (5) are both provided with adsorption magnets (34, 54) to provide magnetic adsorption force so that the scanning device can fit on the contour of the rail bottom. The front end of the top surface scanning component (3) is used to apply coupling agent (721) on the top surface of the rail bottom through the coupling agent brushing component (7). When in use, the coupling agent (721) in the liquid storage box (72) is left from the plurality of leakage holes (722) and is drained by the bristles of the brush (73), thereby flowing to the top surface of the rail bottom in contact with the brush (73). When the staff pushes the scanning device, the brush (73) evenly applies the coupling agent (721) on the top surface of the rail bottom.

[0038] When the device is used, it is placed on the bottom of the pointed rail (9) to be scanned, the top surface adsorption magnet (34) of the top surface scanning component (3) is adsorbed on the top surface of the rail bottom, and the side adsorption magnet (54) of the side scanning component (5) is adsorbed on the side surface of the rail bottom. The staff adjusts the length of the telescopic rod (1) according to their own height, and then adds coupling agent (721) into the liquid storage box (72). A staff member hangs the flaw detector on his chest or holds the flaw detector, and holds the telescopic rod (1) to push the top surface scanning component (3) and the side scanning component (5) forward to scan the bottom of the pointed rail (9).

[0039] Compared with the prior art, the utility model has the following beneficial effects:

[0040] The utility model combines a coding component (6) with a probe, the coding component (6) records the scanning position information, and the probe performs scanning, and can convert the A-type detection waveform scanned by the probe alone into a B-type scanning image, and the damage information is presented in a graphical manner, making the detection result more intuitive and clear, and effectively improving the damage identification and analysis efficiency of the operator.

[0041] The telescopic rod (1) of the utility model can be telescopically adjusted in length, and the direction can be adjusted through the universal joint (2), so that operators of different heights can easily stand upright and push the scanning device to move longitudinally along the pointed rail (9) to complete the scanning work, which is not limited to a fixed height or angle. The labor intensity of the operators can be greatly reduced, the fatigue can be reduced, and more energy can be concentrated on the identification of injuries.

[0042] The utility model uses a brush (73) to evenly apply a coupling agent (721) on the top surface of the rail bottom. The coupling agent (721) can eliminate the air between the probe and the bottom of the pointed rail (9), thereby eliminating the air acoustic impedance, improving the contact quality, and reducing the attenuation and interference of the signal. At the same time, the brush (73) can also sweep away obstacles such as accumulated dust, fallen leaves, ballast stones, etc. on the top surface of the rail bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the utility model;

[0044] Figure 2 This is one of the structural schematic diagrams of the scanning assembly of Embodiment 1 of the present utility model;

[0045] Figure 3 This is the second structural diagram of the scanning assembly of Embodiment 1 of the present utility model;

[0046] Figure 4 This is a schematic diagram of the three-dimensional structure of Example 2 of the utility model;

[0047] Figure 5 This is a schematic diagram of the structure of the scanning assembly of Embodiment 2 of the present utility model;

[0048] Figure 6 A schematic diagram of the direction of sound waves when the probe of the utility model is scanned from a top-down perspective;

[0049] Figure 7 A schematic diagram of the direction of sound waves when scanning a cross-sectional view using the probe of the utility model;

[0050] Figure 8 A schematic diagram of the direction of sound waves when the probe of the utility model scans from a side view angle;

[0051] Fig. 9 This is a usage state diagram of the utility model.

[0052] Numbers in the figure:

[0053] 1- telescopic rod, 11- adjustment and locking wrench;

[0054] 2-Universal joint;

[0055] 3-top surface scanning assembly, 301-limiting slide, 31-top surface mounting seat, 32-top surface probe group, 33-top surface walking wheel, 34-top surface adsorption magnet;

[0056] 4-Connectors;

[0057] 5-side scanning assembly, 51-side mounting seat, 52-side probe group, 53-side walking wheel, 54-side adsorption magnet;

[0058] 6-encoding assembly, 61-encoder, 62-encoding wheel;

[0059] 7-coupling agent brushing assembly, 71-mounting plate, 72-liquid storage box, 721-coupling agent, 722-liquid leakage hole, 73-brush;

[0060] 8-adaptive adjustment component, 81-limiting bolt, 82-spring;

[0061] 9-Point rail. DETAILED DESCRIPTION

[0062] In order to enable those skilled in the art to better understand the technical solution of the utility model, its specific implementation method is described in detail below with reference to the accompanying drawings.

[0063] Embodiment 1:

[0064] like Figure 1-3 As shown in , 6-8, a pointed rail bottom scanning device comprises a telescopic rod 1, a universal joint 2 is installed at the bottom of the telescopic rod 1, and the other end of the universal joint 2 is fixedly connected to the top of a top surface scanning component 3; a top surface probe group 32 is provided on the top surface scanning component 3, which is located above the top surface of the rail bottom when in use, and the scanning surface of the top surface probe group 32 fits the top surface of the rail bottom, a connecting member 4 is provided on the outer side of the top surface scanning component 3, and a side scanning component 5 is provided below the connecting member 4, which is located on the outer side of the rail bottom when in use, and a side probe group 52 is provided on the side scanning component 5, and the scanning surface of the side probe group 52 fits the side surface of the rail bottom; an encoding component 6 is provided in the middle of the top surface scanning component 3, and the encoding component 6 includes an encoder 61 and an encoding wheel 62, and the encoding wheel 62 contacts the top surface of the rail bottom when in use.

[0065] In an embodiment, Figure 1-3 As shown, the top surface scanning assembly 3 includes a top surface mounting seat 31, and the two probes of the top surface probe group 32 are respectively arranged in the limiting slide grooves 301 at both ends of the top surface mounting seat 31; two top surface running wheels 33 are arranged on each side of the top surface mounting seat 31, and when in use, the four top surface running wheels 33 are in contact with the top surface of the rail bottom, and the lowest point of the four top surface running wheels 33 is located in the same plane as the lowest point of the encoding wheel 62; two top surface adsorption magnets 34 are arranged at the bottom of the top surface mounting seat 31.

[0066] In an embodiment, Figure 1-3 As shown, the side scanning assembly 5 includes a side mounting seat 51 installed at the bottom of the connecting member 4, and two probes of the side probe group 52 are respectively arranged in the limiting slide grooves 301 at both ends of the side mounting seat 51; two side walking wheels 53 are horizontally arranged on one side of the side mounting seat 51 close to the top surface scanning assembly 3, and the two side walking wheels 53 are in contact with the side surface of the bottom of the rail when the two side walking wheels 53 are in use; two side adsorption magnets 54 are arranged on one side of the side mounting seat 51 close to the top surface scanning assembly 3.

[0067] In an embodiment, Figure 2 , 3 As shown, both sides of the top surface scanning assembly 3 and the side surface scanning assembly 5 are provided with limit slots 301, and the probes of the top surface probe group 32 and the side surface probe group 52 are arranged in the corresponding limit slots 301;

[0068] Both the top probe group 32 and the side probe group 52 are provided with an adaptive adjustment component 8, which includes a limit bolt 81 and a spring 82. The threaded end of the limit bolt 81 is installed on the back of the probe, the head of the limit bolt 81 of the top probe group 32 passes through the top of the top surface scanning component 3 upward, and the head of the limit bolt 81 of the side probe group 52 passes through the outside of the side scanning component 5 outward; the spring 82 is coaxially arranged on the limit bolt 81, one end of which abuts against the back of the probe, and the other end abuts against the installation groove of the corresponding probe.

[0069] The spring 82 is in a compressed state when in use, so that the probe and the scanning surface of the rail foot are kept at an appropriate pressure to ensure good coupling. The head of the limit bolt 81 is used to prevent the probe from coming out of the limit slide groove 301.

[0070] In the embodiment, a certain distance is set between the top adsorption magnet 34, the side adsorption magnet 54 and the corresponding bottom surface of the point rail 9, and the distance does not exceed 1.5 mm. While ensuring that the top surface scanning assembly 3 and the side scanning assembly 5 can be adsorbed on the bottom area of ​​the rail, the resistance of the scanning device during the walking process can be reduced, and the service life of the top surface adsorption magnet 34 and the side adsorption magnet 54 can be increased.

[0071] The top surface adsorption magnet 34 and the side surface adsorption magnet 54 are used to provide magnetic adsorption force for the top surface scanning assembly 3 and the side surface scanning assembly 5, respectively, so that the top surface scanning assembly 3 and the side surface scanning assembly 5 can fit on the bottom contour of the pointed rail 9. It is ensured that when the staff pushes the scanning device, the top surface scanning assembly 3 and the side surface scanning assembly 5 can continue to be firmly adsorbed on the bottom area of ​​the rail for movement, so as to prevent the movement trajectory of the probe from deviating.

[0072] In an embodiment, Figure 1 , 3As shown, the connecting member 4 is an "L"-shaped structure, and the vertical surface of the connecting member 4 is set at a certain angle to the horizontal surface, and the angle is adapted to the slope of the bottom and top surface of the pointed rail 9. The vertical surface angle of the connecting member 4 makes the top surface scanning assembly 3 parallel to the bottom and top surface of the pointed rail 9 when in use.

[0073] In the embodiment, the scanning probes of the top probe group 32 and the side probe group 52 are ultrasonic probes, both of which use MCX interfaces and work in a self-transmitting and self-receiving mode.

[0074] The probe of the top surface probe group 32 uses a 2.5Mhz frequency, a chip size of 12×10mm, and a refraction angle of 68.2° in steel. The probe is placed in a direction that the top surface of the rail bottom is tilted outward at a specific angle, and the angle range is 10-30°. The first and second waves of the ultrasonic wave are mainly used to completely cover the entire area of ​​the outer edge of the rail bottom of the pointed rail.

[0075] The probe of the side probe group 52 also uses a 2.5Mhz frequency, a chip size of 12×10mm, and a refraction angle of 45° in steel. The probe is placed on the side of the rail bottom without deflection, and emits ultrasonic waves from the outside to the inside of the pointed rail 9, mainly using the first wave of the ultrasonic wave to cover the area of ​​the inner rail bottom corner.

[0076] The top probe group 32 , the side probe group 52 and the encoder 61 are electrically connected to the flaw detector.

[0077] In the embodiment, the encoding component 6 can convert the A-type detection waveform into a B-type scanning image, and the damage information is presented in a graphical manner, making the detection results more intuitive and clear, and effectively improving the damage identification and analysis efficiency of the operator.

[0078] In an embodiment, Figure 1 As shown, the telescopic rod 1 is provided with an adjusting and locking wrench 11. After loosening the adjusting and locking wrench 11 clockwise, the telescopic rod 1 can be freely adjusted to a suitable length, and after tightening the adjusting and locking wrench 11 counterclockwise, the telescopic rod 1 can be locked. With the universal joint 2 coupling between the telescopic rod 1 and the top surface scanning assembly 3, operators of different heights can easily push the scanning device upright to move longitudinally along the pointed rail 9 for scanning and complete the scanning work, without being limited to a fixed height or angle.

[0079] The handheld push operation mode changes the squatting posture to a standing posture. The inspection area can be covered by only pushing the inspection probe forward with the handheld telescopic rod 1. This change in the inspection working condition can greatly reduce the labor intensity of the operators, reduce fatigue, and focus more on damage identification. It can not only improve the on-site working conditions, but also improve the inspection efficiency of the bottom flaw detection of the point rail 9.

[0080] Embodiment 2:

[0081] like Figure 4 , 5 As shown in 9 , compared with Example 1, a coupling agent coating component 7 is provided at the front end of the top surface scanning component 3 of Example 2.

[0082] In an embodiment, Figure 4 , 5 As shown, the coupling agent brushing assembly 7 includes a mounting plate 71, one end of which is mounted on the top of the front end of the top surface scanning assembly 3, and the other end extends forward to the top surface scanning assembly 3; a liquid storage box 72 is arranged above the front end of the mounting plate 71, and coupling agent 721 is stored in the liquid storage box 72, and a brush 73 is arranged below the liquid storage box 72, and a plurality of leakage holes 722 are arranged at the connection between the liquid storage box 72 and the brush 73; when the brush 73 is in use, the bottom of the brush 73 contacts the top surface of the rail bottom.

[0083] The surface of the bottom of the pointed rail 9 is relatively rough, and the coupling agent 721 is used to fill the gap between the probe and the bottom of the pointed rail 9, eliminate the air between the probe and the bottom of the pointed rail 9, thereby eliminating the air acoustic impedance, improving the contact quality, and reducing signal attenuation and interference. The coupling agent 721 can also protect the probe surface and extend the service life of the probe.

[0084] When in use, the coupling agent 721 in the liquid storage box 72 flows out from the plurality of leakage holes 722, and is drained by the bristles of the brush 73, thereby flowing to the top surface of the rail bottom in contact with the brush 73. When the worker pushes the scanning device, the brush 73 evenly applies the coupling agent 721 to the top surface of the rail bottom. At the same time, the brush 73 can also remove obstacles such as accumulated dust, fallen leaves, and ballast stones on the top surface of the rail bottom.

[0085] Coupling agent 721 is usually a mixture of water, glycerin, ethanol, petroleum, etc. Among them, water is the main component of flaw detection coupling agent 721, while glycerin and ethanol play the role of antifreeze and viscosity increase, and petroleum increases the detection effect.

[0086] Because the top surface of the rail bottom has a certain slope, the top surface scanning component 3 and the coupling agent brushing component 7 are tilted as a whole. When the coupling agent 721 flows downward, a part of the coupling agent 721 flows along the bristles of the brush 73 to the top surface of the rail bottom, and the other part of the coupling agent 721 flows to the relatively lower side surface of the rail bottom, and is drained to the edge of the side surface of the rail bottom and the top surface of the rail bottom through the bristles of the brush 73 close to the side surface of the rail bottom, and flows downward along the side surface of the rail bottom.

[0087] Working mode of the utility model:

[0088] Step 1: The staff places the device on the bottom of the pointed rail 9 to be scanned, so that the top surface adsorption magnet 34 of the top surface scanning component 3 is adsorbed on the top surface of the rail bottom, and the side adsorption magnet 54 of the side scanning component 5 is adsorbed on the side surface of the rail bottom.

[0089] Step 2: Loosen the adjusting and locking wrench 11 at the lower end of the telescopic rod 1, adjust the length of the telescopic rod 1 according to the height of the staff member, and tighten the adjusting and locking wrench 11 after the adjustment is completed.

[0090] Step 3: Open the lid of the liquid storage box 72 and add coupling agent 721 into the liquid storage box 72 . The coupling agent 721 in the liquid storage box 72 flows out from the plurality of leakage holes 722 and is drained by the bristles of the brush 73 , thereby flowing onto the top surface of the rail bottom in contact with the brush 73 .

[0091] Step 4: A staff member hangs the flaw detector on his chest or holds the flaw detector in his hand, and holds the telescopic rod 1 to push the top surface scanning component 3 and the side scanning component 5 forward to scan the bottom of the pointed rail 9.

[0092] It should be noted that the above detailed introduction of the technical solution of the utility model and the description of the principle of the utility model are provided, and the above description of the working principle is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0093] The technical personnel in the technical field of the utility model can make modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, which shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A scanning device for the bottom of a pointed rail, characterized in that: include: A telescopic rod (1) capable of being telescopically adjusted in length; A universal joint (2), one end of which is arranged at the bottom of the telescopic rod (1) and the other end of which is fixedly connected above the top surface scanning component (3) and is used to adjust the operating angle of the telescopic rod (1); A top surface scanning assembly (3) is provided with a top surface probe group (32), which is located above the top surface of the rail bottom when in use, and the scanning surface of the top surface probe group (32) is in contact with the top surface of the rail bottom, and is used to scan the pointed rail (9) from the top surface of the rail bottom; A connecting member (4) is arranged outside the top surface scanning assembly (3) and is used to connect the top surface scanning assembly (3) and the side surface scanning assembly (5); A side scanning assembly (5) is arranged below the connecting member (4) and is located outside the rail bottom when in use. A side probe group (52) is arranged on the side scanning assembly (55). The scanning surface of the side probe group (52) is in contact with the side surface of the rail bottom and is used to scan the pointed rail (9) from the side surface of the rail bottom. The encoding assembly (6) is arranged in the middle of the top surface scanning assembly (3), and comprises an encoder (61) and an encoding wheel (62). When in use, the encoding wheel (62) contacts the top surface of the rail bottom and is used to record the position information of the scanning device on the pointed rail (9); The coupling agent brushing component (7) is arranged at the front end of the top surface scanning component (3) and is used for brushing the coupling agent (721) on the top surface of the rail bottom.

2. The pointed rail bottom scanning device according to claim 1, characterized in that: The top surface scanning assembly (3) and the side surface scanning assembly (5) are both provided with limit sliding grooves (301), and the probes of the top surface probe group (32) and the side surface probe group (52) are arranged in the corresponding limit sliding grooves (301); The top probe group (32) and the side probe group (52) are both provided with an adaptive adjustment component (8), and the adaptive adjustment component (8) includes: A limit bolt (81) with a threaded end mounted on the back of the probe, the head of the limit bolt (81) of the top probe group (32) passes upward through the top of the top scanning assembly (3), and the head of the limit bolt (81) of the side probe group (52) passes outward through the outside of the side scanning assembly (5); The spring (82) is coaxially arranged on the limiting bolt (81), one end of which abuts against the back of the probe and the other end of which abuts against the mounting groove of the corresponding probe.

3. The pointed rail bottom scanning device according to claim 1, characterized in that: The coupling agent brushing assembly (7) comprises: A mounting plate (71), one end of which is mounted on the front end of the top surface scanning assembly (3) and the other end of which extends forward from the top surface scanning assembly (3); A liquid storage box (72) is arranged above the front end of the mounting plate (71), wherein the liquid storage box (72) stores a coupling agent (721), and a plurality of liquid leakage holes (722) are arranged at the connection between the liquid storage box (72) and the brush (73); The brush (73) is arranged below the liquid storage box (72), and the bottom of the brush (73) contacts the top surface of the rail bottom when in use.

4. The pointed rail bottom scanning device according to claim 1, characterized in that: The top surface scanning component (3) comprises: Top surface mounting seat (31); A top surface probe group (32) includes two probes, which are respectively arranged at two ends of the top surface mounting seat (31); Four top surface running wheels (33) are respectively arranged on both sides of the top surface mounting seat (31); when in use, the four top surface running wheels (33) are in contact with the top surface of the rail bottom, and the lowest points of the four top surface running wheels (33) and the lowest point of the encoding wheel (62) are located in the same plane; At least one top surface adsorption magnet (34) is arranged at the bottom of the top surface mounting seat (31).

5. The pointed rail bottom scanning device according to claim 4, characterized in that: There is a certain angle between the two probes of the top surface probe group (32) and the extension direction of the rail, and the angle range is 10-30°.

6. The pointed rail bottom scanning device according to claim 4, characterized in that: The side scanning assembly (5) comprises: A side mounting seat (51) is mounted on the bottom of the connecting member (4); A side probe group (52), comprising two probes, which are respectively arranged at two ends of the side mounting seat (51); Two side running wheels (53) are transversely arranged on one side of the side mounting seat (51) close to the top surface scanning assembly (3), and when in use, the side running wheels (53) are in contact with the side surface of the rail bottom; At least one side adsorption magnet (54) is arranged on a side of the side mounting seat (51) close to the top surface scanning assembly (3).

7. The pointed rail bottom scanning device according to claim 6, characterized in that: A certain distance is provided between the top surface adsorption magnet (34), the side surface adsorption magnet (54) and the corresponding bottom surface of the pointed rail (9), and the distance does not exceed 1.5 mm.

8. The pointed rail bottom scanning device according to claim 1, characterized in that: The connecting piece (4) is in an "L"-shaped structure, and a deflection angle is arranged in the vertical direction of the connecting piece (4) toward the transverse direction, and the deflection angle is adapted to the slope of the bottom top surface of the pointed rail (9).

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