Locomotive hub eddy current flaw detection device and equipment

Abstract

The utility model discloses a locomotive hub eddy current flaw detection device and equipment, the device comprises a holding assembly and a flaw detection assembly, the holding assembly comprises a feeler lever and a connecting seat, and the flaw detection assembly comprises a flaw detection base, a detection head, a first torsion spring and a second torsion spring; the flaw detection base and the connecting base are rotationally connected around a first axis perpendicular to the extension direction of the probe rod, and the two ends of the first torsional spring act on the flaw detection base and the connecting base and are suitable for applying elastic force rotating towards the attaching side of the flaw detection assembly to the flaw detection base; the detection head is located at the front end of the flaw detection base and rotationally connected with the flaw detection base around a second axis perpendicular to the extension direction of the probe rod, and the two ends of the second torsion spring act on the flaw detection base and the detection head and are suitable for applying elastic force rotating away from the attaching side of the flaw detection assembly to the detection head; the attaching side is the side, attached to the locomotive hub during flaw detection, of the flaw detection assembly, and the detection head is used for being attached to the locomotive hub and conducting eddy current flaw detection on the locomotive hub. The eddy current flaw detection device can improve the detection efficiency and reduce the probability of false detection and missing detection.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub eddy current flaw detection, in particular to a locomotive wheel hub eddy current flaw detection device and equipment. Background Art

[0002] The wheel hub of a fuel locomotive is the locomotive's primary load-bearing component. It's typically made of carbon steel or alloy steel, which offers high hardness and wear resistance. Over extended use, the wheel hub is subjected to alternating loads and anisotropic forces, which can easily develop fatigue cracks extending from the inside out or from the outside in. If these cracks aren't detected promptly, they can eventually lead to fatigue fracture and accidents. Currently, eddy current testing is commonly used for locomotive wheel hubs. However, due to the difficulty of disassembling locomotive wheels, the wheels are typically inspected directly at the locomotive's parking site. This limited testing space requires the inspector to manually control the flaw detection device against the wheel hub, which can easily cause the probe to leave the wheel hub surface, leading to missed or incorrect detections. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a locomotive wheel hub eddy current flaw detection device and equipment, which can improve the detection efficiency and reduce the probability of wrong detection and missed detection.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] Technical solution 1: A locomotive wheel hub eddy current flaw detection device, comprising: a holding assembly, which includes a probe rod and a connecting seat located at the front end of the probe rod; and a flaw detection assembly, which includes a flaw detection base, a detection head, a first torsion spring and a second torsion spring; the flaw detection base is rotatably connected to the connecting seat around a first axis perpendicular to the extension direction of the probe rod, and both ends of the first torsion spring act on the flaw detection base and the connecting seat, and are suitable for applying an elastic force to the flaw detection base to rotate toward the abutting side of the flaw detection assembly; the detection head is located at the front end of the flaw detection base and is rotatably connected to the flaw detection base around a second axis perpendicular to the extension direction of the probe rod, and both ends of the second torsion spring act on the flaw detection base and the detection head, and are suitable for applying an elastic force to the detection head to rotate away from the abutting side of the flaw detection assembly; the abutting side is the side of the flaw detection assembly that is abutted against the locomotive wheel hub during flaw detection, and the detection head is used to abut against the locomotive wheel hub and perform eddy current flaw detection on it.

[0006] Technical solution 2 based on technical solution 1: the flaw detection base is provided with an arc groove with the second axis as the center at a position deviated from the second axis; the detection head is provided with a limiting shaft adapted to the arc groove; the limiting shaft is suitable for being inserted into the arc groove along a first direction perpendicular to the extension direction of the probe rod, and the rotation range of the detection head relative to the flaw detection base is limited by the two ends of the arc groove.

[0007] Technical solution three based on technical solution two: the number of the second torsion spring is one; the flaw detection base is provided with a first fork arm and a second fork arm opposite to each other along the extension direction of the probe rod, the arc-shaped groove is provided on the first fork arm, and the second fork arm is provided with a first accommodating groove for accommodating the second torsion spring and abutting against one end of the second torsion spring on the side facing the first fork arm; the detection head is provided with a second accommodating groove for accommodating the second torsion spring and abutting against the other end of the second torsion spring on the side facing the second fork arm; the detection head is rotatably connected to the first fork arm and the second fork arm through two detection shafts, and the second torsion spring is sleeved on one of the detection shafts.

[0008] Technical solution four based on technical solution three: the number of the first torsion springs is two; the connecting seat is provided with a third fork arm and a fourth fork arm opposite to each other along the extension direction of the probe rod, and the third fork arm and the fourth fork arm are provided with a third accommodating groove and a fourth accommodating groove on the opposite sides respectively, and the third accommodating groove and the fourth accommodating groove are respectively used to accommodate a first torsion spring and abut against one end of the first torsion spring; the flaw detection base is provided with a fifth accommodating groove and a sixth accommodating groove on the sides facing the third fork arm and the fourth fork arm respectively, and the fifth accommodating groove and the sixth accommodating groove are respectively used to accommodate a first torsion spring and abut against the other end of the first torsion spring; the flaw detection base is rotatably connected to the third fork arm and the fourth fork arm through two connecting shafts, and each of the first torsion springs is respectively sleeved on one of the connecting shafts.

[0009] Technical Solution 5 based on Technical Solution 4: The holding assembly also includes two rotating shaft connectors; the rotating shaft connectors are fixedly connected to the connecting seat, and the connecting rotating shaft is provided on the rotating shaft connectors.

[0010] Technical solution six based on technical solution five: the detection head includes a detection mounting seat and a probe, the probe is fixedly mounted on the detection mounting seat, and the detection mounting seat is connected to the flaw detection base.

[0011] Technical solution seven based on technical solution six: the detection mounting seat and the flaw detection base are both provided with wiring grooves for wiring; the connecting seat and the probe rod are hollow inside to form a wiring channel; the wires of the probe extend to the rear end of the probe rod through the wiring grooves and the wiring channel.

[0012] Technical Solution 8 based on Technical Solution 7: The probe rod includes at least one set of inner rods and outer rods that are socketed with each other, and the set of inner rods and outer rods are configured to be suitable for relative sliding along the extension direction of the probe rod to achieve extension and shortening of the probe rod.

[0013] Technical solution nine based on any one of technical solutions one to eight: the flaw detection component also includes a camera, which is installed on the flaw detection base, and its shooting direction is toward the side of the flaw detection component that is attached.

[0014] In addition, the present invention also provides technical solution ten: a locomotive wheel hub eddy current flaw detection device, which includes a signal generator and a signal processor, and is characterized in that it also includes a locomotive wheel hub eddy current flaw detection device as described in any one of technical solutions one to nine, which is electrically connected to the signal generator and signal processor to perform eddy current flaw detection on the locomotive wheel hub.

[0015] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0016] Technical solution 1 provides a locomotive wheel hub eddy current flaw detection device, which includes a gripping assembly and a flaw detection assembly. The gripping assembly can be used by a user to grip and place the flaw detection device against the surface of the locomotive wheel hub, wherein the probe rod can extend the overall length of the flaw detection device, making it easier for the user to operate; the flaw detection assembly includes a flaw detection base, a detection head, a first torsion spring, and a second torsion spring, wherein the flaw detection base is rotatably mounted on the connecting seat, and the detection head is rotatably mounted on the flaw detection base, and the flaw detection base is matched with the connecting seat through the first torsion spring, and the detection head is matched with the flaw detection base through the second torsion spring, wherein the force applied by the first torsion spring causes the detection base to rotate toward the abutting side, and the force applied by the second torsion spring causes the detection head to rotate away from the abutting side. With such an arrangement, when the flaw detection device is abutted against the surface of the locomotive wheel hub, the force applied by the first torsion spring and the second torsion spring allows the user to make the detection head of the flaw detection device tightly abut against the locomotive wheel hub without any effort, and the detection head is not easily separated from the surface of the locomotive wheel hub, thereby improving detection efficiency and reducing the probability of false detection and missed detection.

[0017] In technical solution two, an arc groove is provided on the flaw detection base, and a limit shaft is provided on the detection head. The limit shaft can be inserted into the arc groove, thereby limiting the rotation range of the detection head through the arc groove to prevent the detection head from excessively rotating under the action of the second torsion spring.

[0018] In technical solution three, the flaw detection base is provided with a first fork arm and a second fork arm to facilitate the installation of the detection head. At the same time, a receiving groove is provided on the fork arm and the detection head to facilitate the installation of the second torsion spring.

[0019] In technical solution four, the connecting seat is provided with a third fork arm and a fourth fork arm to facilitate the installation of the flaw detection base. At the same time, a receiving groove is provided on the fork arm and the flaw detection base to facilitate the installation of the first torsion spring.

[0020] In technical solution five, the holding assembly includes a rotating shaft connector to facilitate the rotational connection of the flaw detection base to the connecting seat.

[0021] In technical solution six, the detection head includes a detection mounting base and a probe, and the separate setting facilitates maintenance and replacement of the probe.

[0022] In Technical Solution 7, wiring grooves are set on the detection mounting base and the flaw detection base, and wiring channels are set on the connecting base and the probe rod to facilitate the routing of the probe wires to the rear end of the probe rod.

[0023] In technical solution eight, the probe rod includes a sleeved inner rod and an outer rod, which slide relative to each other to achieve the extension and shortening of the probe rod.

[0024] In technical solution nine, a camera is set up to visually observe the surface condition of the locomotive wheel hub during the flaw detection process to avoid false detection.

[0025] Technical Solution 10 provides a locomotive wheel hub eddy current flaw detection equipment, which adopts the above-mentioned locomotive wheel hub eddy current flaw detection device, allowing the user to make the detection head tightly attached to the locomotive wheel hub without any effort, thereby improving detection efficiency and reducing the probability of false detection and missed detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the assembly of a locomotive wheel hub eddy current flaw detection device provided by an embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the structure of the eddy current flaw detection device for the wheel hub of a Chinese locomotive;

[0029] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0030] Figure 4 for Figure 1 Schematic diagram of the explosion of part of the structure of the eddy current flaw detection device of the wheel hub of the Chinese locomotive.

[0031] Description of main reference numerals:

[0032] Holding assembly 1; probe rod 2; connecting seat 3; flaw detection assembly 4; flaw detection base 5; detection head 6; first torsion spring 7; second torsion spring 8; arc groove 9; limiting shaft 10; first fork arm 11; second fork arm 12; first accommodating groove 13; second accommodating groove 14; detection shaft 15; third fork arm 16; fourth fork arm 17; third accommodating groove 18; fourth accommodating groove 19; fifth accommodating groove 20; sixth accommodating groove 21; connecting shaft 22; shaft connector 23; detection mounting seat 24; probe 25; wiring groove 26; inner rod 27; outer rod 28; camera 29. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.

[0035] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise expressly defined, directional words, such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present utility model.

[0036] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0037] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0038] Example 1

[0039] Embodiment 1 of the present invention provides an eddy current flaw detection device for a locomotive wheel hub, which can detect defects such as cracks on a locomotive wheel hub by using electromagnetic induction eddy currents.

[0040] Reference Figure 1 The locomotive wheel hub eddy current flaw detection device mainly includes a holding component 1 and a flaw detection component 4.

[0041] The grip assembly 1 includes a probe rod 2 and a connecting base 3 located at the front end of the probe rod 2. The probe rod 2 includes at least one set of inner rods 27 and outer rods 28 that are interconnected and configured to slide relative to each other along the extension direction of the probe rod 2 to achieve extension and contraction of the probe rod 2.

[0042] Specifically, refer to Figure 1 and Figure 3 In this embodiment, the probe 2 includes a set of inner rods 27 and outer rods 28. The outer rods 28 are hollow, and the inner rods 27 are loosely fitted inside the outer rods 28, so that the inner rods 27 can be extended or shortened relative to the outer rods 28. A connecting seat 3 is fixed to the front end of the inner rods 27 by bolt fasteners. Figure 3 The rear end of the connecting seat 3 is an opening that is plugged into the front end of the inner rod 27. Bolt holes are provided on the side of the connecting seat 3, and the connecting seat 3 can be fixed to the inner rod 27 by bolts. The specific structure of the connecting seat 3 will be described in detail below.

[0043] Reference Figure 2 、 Figure 3 and Figure 4 The flaw detection assembly 4 includes a flaw detection base 5, a detection head 6, a first torsion spring 7 and a second torsion spring 8; the flaw detection base 5 is rotatably connected to the connecting seat 3 around a first axis perpendicular to the extension direction of the probe rod 2, and the two ends of the first torsion spring 7 act on the flaw detection base 5 and the connecting seat 3, and are suitable for applying an elastic force to the flaw detection base 5 to rotate toward the abutting side of the flaw detection assembly 4; the detection head 6 is located at the front end of the flaw detection base 5 and is rotatably connected to the flaw detection base 5 around a second axis perpendicular to the extension direction of the probe rod 2, and the two ends of the second torsion spring 8 act on the flaw detection base 5 and the detection head 6, and are suitable for applying an elastic force to the detection head 6 to rotate away from the abutting side of the flaw detection assembly 4; the abutting side is the side of the flaw detection assembly 4 that is abutted against the locomotive wheel hub during flaw detection, and the detection head 6 is used to abut against the locomotive wheel hub and perform eddy current flaw detection on it.

[0044] In which, the flaw detection base 5 is provided with an arc groove 9 with the second axis as the center at a position deviating from the second axis; the detection head 6 is provided with a limit shaft 10 adapted to the arc groove 9; the limit shaft 10 is suitable for being inserted into the arc groove 9 along a first direction perpendicular to the extension direction of the probe rod 2, and the rotation range of the detection head 6 relative to the flaw detection base 5 is limited by the two ends of the arc groove 9.

[0045] The number of the second torsion spring 8 is one; the flaw detection base 5 is provided with a first fork arm 11 and a second fork arm 12 opposite to each other along the extension direction of the probe rod 2, the arc groove 9 is provided on the first fork arm 11, and the second fork arm 12 is provided with a first accommodating groove 13 for accommodating the second torsion spring 8 and abutting one end of the second torsion spring 8 on the side facing the first fork arm 11; the detection head 6 is provided with a second accommodating groove 14 for accommodating the second torsion spring 8 and abutting the other end of the second torsion spring 8 on the side facing the second fork arm 12; the detection head 6 is rotatably connected to the first fork arm 11 and the second fork arm 12 through two detection shafts 15, and the second torsion spring 8 is sleeved on one of the detection shafts 15.

[0046] There are two first torsion springs 7; the connecting seat 3 is provided with a third fork arm 16 and a fourth fork arm 17 opposite to each other along the extension direction of the probe rod 2, and the third fork arm 16 and the fourth fork arm 17 are respectively provided with a third accommodating groove 18 and a fourth accommodating groove 19 on the opposite side, and the third accommodating groove 18 and the fourth accommodating groove 19 are respectively used to accommodate a first torsion spring 7 and abut against one end of the first torsion spring 7; the flaw detection base 5 is respectively provided with a fifth accommodating groove 20 and a sixth accommodating groove 21 on the side facing the third fork arm 16 and the fourth fork arm 17, and the fifth accommodating groove 20 and the sixth accommodating groove 21 are respectively used to accommodate a first torsion spring 7 and abut against the other end of the first torsion spring 7; the flaw detection base 5 is rotatably connected to the third fork arm 16 and the fourth fork arm 17 through two connecting shafts 22, and each of the first torsion springs 7 is respectively sleeved on one of the connecting shafts 22.

[0047] The detection head 6 includes a detection mounting seat 24 and a probe 25 . The probe 25 is fixedly mounted on the detection mounting seat 24 . The detection mounting seat 24 is connected to the flaw detection base 5 .

[0048] Specifically, the rear end of the flaw detection base 5 is pivotally connected to the connecting base 3, and the front end is formed with a first fork arm 11 and a second fork arm 12 arranged oppositely. The detection head 6 is pivotally mounted between the first fork arm 11 and the second fork arm 12. Similarly, the front end of the connecting base 3 is also formed with a third fork arm 16 and a fourth fork arm 17 arranged oppositely. The rear end of the flaw detection base 5 is pivotally mounted between the third fork arm 16 and the fourth fork arm 17. In this embodiment, the extension direction of the probe rod 2 is defined as the second direction, and a first direction is defined, which is perpendicular to the second direction.

[0049] Reference Figure 3 and Figure 4, a third receiving groove 18 and a fourth receiving groove 19 are respectively provided on the inner side of the third fork arm 16 and the fourth fork arm 17 at the front end of the connecting seat 3. The front ends of the third receiving groove 18 and the fourth receiving groove 19 form openings to facilitate the installation of the first torsion spring 7. At the same time, an opening is provided at the bottom of the third receiving groove 18 and the fourth receiving groove 19, which is through in the first direction, to facilitate the insertion of the connecting shaft 22 between the third fork arm 16 and the fourth fork arm 17. Among them, the gripping assembly 1 also includes two rotating shaft connectors 23; the rotating shaft connector 23 is fixed to the connecting seat 3, and the connecting rotating shaft 22 is provided on the rotating shaft connector 23. Specifically, refer to Figure 3 and Figure 4 The shaft connector 23 is provided with the aforementioned connecting shaft 22 and is also provided with an opening. Corresponding positions on the third fork arm 16 and the fourth fork arm 17 also provide openings. After the connecting shaft 22 on the shaft connector 23 is inserted into the openings on the third fork arm 16 and the fourth fork arm 17, the shaft connector 23 and the other openings on the third fork arm 16 and the fourth fork arm 17 also correspond to each other. The shaft connector 23 can then be fixed to the connecting base 3 using bolt fasteners. This arrangement improves the stability of the connecting shaft 22 and facilitates the installation of the first torsion spring 7.

[0050] At the same time, a fifth receiving groove 20 and a sixth receiving groove 21 are correspondingly provided at the rear end of the flaw detection base 5. The bottoms of the fifth receiving groove 20 and the sixth receiving groove 21 are also provided with openings for inserting the connecting shaft 22. During assembly, the rear end of the flaw detection base 5 is first inserted between the third fork arm 16 and the fourth fork arm 17 at the front end of the connecting base 3. Then, one of the first torsion springs 7 is placed in the space formed by the third receiving groove 18 and the fifth receiving groove 20, and the other first torsion spring 7 is placed in the space formed by the fourth receiving groove 19 and the sixth receiving groove 21. Then, the flaw detection base 5 is pushed backward until it is completely installed in the front end of the connecting base 3. Then, the two connecting shafts 22 are inserted into the connecting base 3 and the flaw detection base 5, and the two shaft connectors 23 are fixed to the connecting base 3. This completes the assembly of the connecting base 3 and the flaw detection base 5.

[0051] The detection head 6 is formed by a detection mounting base 24 and a probe 25. The probe 25 is connected to the signal generator and the signal processor through a wire. It can receive the signal from the signal generator and generate a magnetic field, and can also receive the signal of the induced magnetic field of the locomotive wheel hub and send it to the signal processor.

[0052] Reference Figure 4The detection mounting base 24 has a second receiving slot 14 on the side facing the second fork arm 12, and the flaw detection base 5 has a first receiving slot 13 on the inner side of the second fork arm 12. The bottoms of the first and second receiving slots 13, 14 are each provided with openings. Openings are also provided on the other side of the detection head 6 and on the first fork arm 11. The detection shaft 15 is inserted into the corresponding openings to allow the detection head 6 to be rotatably connected to the flaw detection base 5. During assembly, the second torsion spring 8 is first placed into the space formed by the first and second receiving slots 13, 14, and then the detection shaft 15 is inserted.

[0053] At the same time, a limit shaft 10 is provided on the side of the detection head 6 corresponding to the first fork arm 11, and an arc groove 9 is provided on the first fork arm 11. The limit shaft 10 can be inserted into the arc groove 9, thereby limiting the rotation range of the detection head 6.

[0054] Among them, the detection mounting seat 24 and the flaw detection base 5 are both provided with a wiring groove 26 for wiring; the connecting seat 3 and the probe rod 2 are hollow inside to form a wiring channel; the wires of the probe 25 extend to the rear end of the probe rod 2 through the wiring groove 26 and the wiring channel.

[0055] In addition, refer to Figure 3 and Figure 4 The flaw detection assembly 4 also includes a camera 29, which is mounted on the flaw detection base 5 and faces the side of the flaw detection assembly 4. The camera 29 allows for intuitive visual observation of the locomotive wheel hub surface during flaw detection, preventing false detections. The wires for the camera 29 extend through the wiring trough 26 and the wiring channel to the rear end of the probe rod 2.

[0056] The locomotive wheel hub eddy current flaw detection device provided in this embodiment includes a gripping assembly 1 and a flaw detection assembly 4. The gripping assembly 1 can be used by the user to grip and place the flaw detection device against the surface of the locomotive wheel hub, wherein the probe rod 2 can extend the overall length of the flaw detection device, making it easier for the user to operate; the flaw detection assembly 4 includes a flaw detection base 5, a detection head 6, a first torsion spring 7 and a second torsion spring 8, wherein the flaw detection base 5 is rotatably mounted on the connecting seat 3, the detection head 6 is rotatably mounted on the flaw detection base 5, and the flaw detection base 5 is matched with the connecting seat 3 through the first torsion spring 7, and the detection head 6 cooperates with the flaw detection base 5 through the second torsion spring 8, wherein the force applied by the first torsion spring 7 causes the flaw detection base 5 to rotate toward the abutting side, while the force applied by the second torsion spring 8 causes the detection head 6 to rotate away from the abutting side. With this arrangement, when the flaw detection device is abutted against the surface of the locomotive wheel hub, the force applied by the first torsion spring 7 and the second torsion spring 8 allows the user to effortlessly make the detection head 6 of the flaw detection device closely abut against the locomotive wheel hub, and the detection head 6 is not easily separated from the locomotive wheel hub surface, thereby improving detection efficiency and reducing the probability of false detection and missed detection.

[0057] Example 2

[0058] Embodiment 2 of the present invention provides a locomotive wheel hub eddy current flaw detection device, which includes a signal generator, a signal processor and the locomotive wheel hub eddy current flaw detection device described in embodiment 1. The eddy current flaw detection device is electrically connected to the signal generator and signal processor to perform eddy current flaw detection on the locomotive wheel hub.

[0059] The locomotive wheel hub eddy current flaw detection equipment adopts the above-mentioned locomotive wheel hub eddy current flaw detection device, which allows the user to make the detection head 6 closely attached to the locomotive wheel hub without any effort, thereby improving the detection efficiency and reducing the probability of wrong detection and missed detection.

[0060] The above description and embodiments are used to explain the scope of protection of the utility model, but do not constitute a limitation on the scope of protection of the utility model. Based on the enlightenment of the utility model or the above embodiments, modifications, equivalent replacements, or other improvements to the embodiments of the utility model or part of the technical features thereof that can be obtained by ordinary technicians in this field through logical analysis, reasoning, or limited experiments in combination with common knowledge, ordinary technical knowledge in this field and / or existing technology should be included in the scope of protection of the utility model.

Claims

1. A locomotive wheel hub eddy current flaw detection device, characterized in that: include: A gripping assembly (1) comprising a probe rod (2) and a connecting seat (3) located at the front end of the probe rod (2); and A flaw detection assembly (4) comprises a flaw detection base (5), a detection head (6), a first torsion spring (7) and a second torsion spring (8); the flaw detection base (5) is rotatably connected to the connecting seat (3) around a first axis perpendicular to the extending direction of the probe rod (2); the first torsion spring (7) has two ends acting on the flaw detection base (5) and the connecting seat (3) and is suitable for applying an elastic force to the flaw detection base (5) to rotate toward the side of the flaw detection assembly (4); the detection head (6) is located on the flaw detection base The front end of the seat (5) is connected to the flaw detection base (5) and is rotatably connected around a second axis perpendicular to the extension direction of the probe rod (2). The two ends of the second torsion spring (8) act on the flaw detection base (5) and the detection head (6), and are suitable for applying an elastic force to the detection head (6) to rotate away from the abutting side of the flaw detection component (4); the abutting side is the side of the flaw detection component (4) that abuts against the locomotive wheel hub when flaw detection is performed, and the detection head (6) is used to abut against the locomotive wheel hub and perform eddy current flaw detection on it.

2. The locomotive wheel hub eddy current flaw detection device according to claim 1, characterized in that: The flaw detection base (5) is provided with an arcuate groove (9) with the second axis as the center at a position deviating from the second axis; the detection head (6) is provided with a limiting shaft (10) adapted to the arcuate groove (9); the limiting shaft (10) is suitable for being inserted into the arcuate groove (9) along a first direction perpendicular to the extending direction of the probe rod (2), and the two ends of the arcuate groove (9) limit the rotation range of the detection head (6) relative to the flaw detection base (5).

3. The locomotive wheel hub eddy current flaw detection device according to claim 2, characterized in that: The number of the second torsion spring (8) is one; the flaw detection base (5) is provided with a first fork arm (11) and a second fork arm (12) which are opposite to each other along the extension direction of the probe rod (2); the arc groove (9) is provided on the first fork arm (11); the second fork arm (12) is provided with a first accommodating groove (13) for accommodating the second torsion spring (8) and abutting against one end of the second torsion spring (8) on the side facing the first fork arm (11); the detection head (6) is provided with a second accommodating groove (14) for accommodating the second torsion spring (8) and abutting against the other end of the second torsion spring (8) on the side facing the second fork arm (12); the detection head (6) is rotatably connected to the first fork arm (11) and the second fork arm (12) through two detection rotating shafts (15), and the second torsion spring (8) is sleeved on one of the detection rotating shafts (15).

4. The locomotive wheel hub eddy current flaw detection device according to claim 3, characterized in that: The number of the first torsion springs (7) is two; the connecting seat (3) is provided with a third fork arm (16) and a fourth fork arm (17) which are opposite to each other along the extending direction of the probe rod (2); the third fork arm (16) and the fourth fork arm (17) are provided with a third accommodating groove (18) and a fourth accommodating groove (19) on the opposite side thereof, respectively; the third accommodating groove (18) and the fourth accommodating groove (19) are respectively used to accommodate a first torsion spring (7) and abut against one end of the first torsion spring (7); the flaw detection base (5) faces the The sides of the third fork arm (16) and the fourth fork arm (17) are respectively provided with a fifth accommodating groove (20) and a sixth accommodating groove (21), and the fifth accommodating groove (20) and the sixth accommodating groove (21) are respectively used to accommodate a first torsion spring (7) and abut against the other end of the first torsion spring (7); the flaw detection base (5) is rotatably connected to the third fork arm (16) and the fourth fork arm (17) through two connecting shafts (22), and each of the first torsion springs (7) is respectively sleeved on one of the connecting shafts (22).

5. The locomotive wheel hub eddy current flaw detection device according to claim 4, characterized in that: The gripping assembly (1) further comprises two rotating shaft connecting members (23); the rotating shaft connecting members (23) are fixedly connected to the connecting seat (3), and the connecting rotating shaft (22) is arranged on the rotating shaft connecting members (23).

6. The locomotive wheel hub eddy current flaw detection device according to claim 5, characterized in that: The detection head (6) comprises a detection mounting seat (24) and a probe (25), wherein the probe (25) is fixedly mounted on the detection mounting seat (24), and the detection mounting seat (24) is connected to the flaw detection base (5).

7. The locomotive wheel hub eddy current flaw detection device according to claim 6, characterized in that: The detection mounting seat (24) and the flaw detection base (5) are both provided with a wiring groove (26) for wiring; the interior of the connecting seat (3) and the probe rod (2) is hollow to form a wiring channel; the wire of the probe (25) extends through the wiring groove (26) and the wiring channel to the rear end of the probe rod (2).

8. The locomotive wheel hub eddy current flaw detection device according to claim 7, characterized in that: The probe rod (2) comprises at least one set of inner rods (27) and outer rods (28) that are sleeved together, and the set of inner rods (27) and outer rods (28) are configured to slide relative to each other along the extension direction of the probe rod (2) to achieve the extension and shortening of the probe rod (2).

9. A locomotive wheel hub eddy current flaw detection device according to any one of claims 1 to 8, characterized in that: The flaw detection component (4) also includes a camera (29), which is installed on the flaw detection base (5), and its shooting direction is toward the side of the flaw detection component (4) that is in contact with the flaw detection component (4).

10. A locomotive wheel hub eddy current flaw detection device, comprising a signal generator and a signal processor, characterized in that: It also includes a locomotive wheel hub eddy current flaw detection device according to any one of claims 1 to 9, which is electrically connected to the signal generator and the signal processor to perform eddy current flaw detection on the locomotive wheel hub.

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