Locomotive hub eddy current flaw detection device and equipment

Abstract

The invention 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 invention relates to the technical field of wheel hub eddy current flaw detection, and 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 main load-bearing component of the locomotive. It is generally made of carbon steel or alloy steel with high hardness and wear resistance. During long-term use, the wheel hub is prone to fatigue cracks extending from the inside out or from the outside in due to the alternating loads and anisotropic forces. If the cracks are not discovered in time, they will eventually cause fatigue fracture and accidents. At present, eddy current flaw detection is generally used for locomotive wheel hubs. However, due to the difficulty in disassembling locomotive wheel hubs, the wheel hubs are usually inspected directly at the locomotive parking site. The inspection space is limited, and the inspector needs to control the flaw detection device by hand to stick to the wheel hub. It is easy for the flaw detection device probe to leave the wheel hub surface, resulting in missed detection or wrong detection. Summary of the invention

[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] To achieve the above object, 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 abutment 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 abutment side of the flaw detection assembly; the abutment side is the side of the flaw detection assembly that abuts against the locomotive wheel hub when flaw detection is performed, 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 limit shaft adapted to the arc groove; the limit 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 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 five based on technical solution four: the holding assembly also includes two rotating shaft connecting parts; the rotating shaft connecting parts are fixedly connected to the connecting seat, and the connecting rotating shaft is arranged on the rotating shaft connecting parts.

[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 base and the flaw detection base are both provided with wiring grooves for wiring; the connecting base 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 eight based on technical solution seven: the probe rod includes at least one group of inner rods and outer rods that are socketed with each other, and the group 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 to it.

[0014] In addition, the present invention also provides Technical Solution 10: 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 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.

[0015] It can be seen from the above description of the present invention 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 holding component and a flaw detection component. The holding component can be used by a user to hold and abut 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 component 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 a connecting seat, 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 direction of the first torsion spring causes the flaw detection base to rotate toward the abutting side, and the force direction of the second torsion spring causes the detection head to rotate away from the abutting side. With such an arrangement, when the flaw detection device abuts against the surface of the locomotive wheel hub, through the force applied by the first torsion spring and the second torsion spring, the user can make the detection head of the flaw detection device closely abut against the locomotive wheel hub without any effort, and the detection head is not easy to separate from the surface of the locomotive wheel hub, thereby improving the 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 base.

[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 seven, 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 wiring of the probe wire to the rear end of the probe rod.

[0023] In technical solution eight, the probe rod includes an inner rod and an outer rod that are sleeved together, and the two rods slide relative to each other to achieve the extension and shortening of the probe rod.

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

[0025] Technical solution ten 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 against the locomotive wheel hub without any effort, thereby improving the 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 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 invention;

[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 partial explosion structure of the eddy current flaw detection device for the wheel hub of a 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; limit 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 technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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 creative work are within the scope of protection of the present invention.

[0034] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0035] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., 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 invention 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 invention.

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

[0037] In the claims, description and drawings of the present invention, 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 a locomotive wheel hub eddy current flaw detection device, which can detect defects such as cracks on the 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 seat 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 sleeved together, and the 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.

[0042] Specifically, refer to Figure 1 and Figure 3 In this embodiment, the probe rod 2 includes a set of inner rod 27 and outer rod 28. The outer rod 28 is hollow, and the inner rod 27 is loosely fitted inside the outer rod 28, so that the inner rod 27 can be extended or shortened relative to the outer rod 28. A connecting seat 3 is fixedly installed at the front end of the inner rod 27 by bolt fasteners. Figure 3 The rear end of the connection seat 3 is an opening for plugging with the front end of the inner rod 27. Bolt holes are provided on the side of the connection seat 3, and the connection seat 3 can be fixed to the inner rod 27 by bolts. The specific structure of the connection 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 base 3 around a first axis perpendicular to the extending 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 base 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 extending 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] Among them, 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 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, and 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.

[0046] 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, and a third accommodating groove 18 and a fourth accommodating groove 19 are respectively provided on the opposite sides of the third fork arm 16 and the fourth fork arm 17, 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 side of the flaw detection base 5 facing the third fork arm 16 and the fourth fork arm 17 is 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.

[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 rotatably 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, and the detection head 6 is rotatably installed 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, and the rear end of the flaw detection base 5 is rotatably installed between the third fork arm 16 and the fourth fork arm 17. In this embodiment, the extension direction of the probe rod 2 is taken as the second direction, and a first direction is defined at the same time, and the first direction is perpendicular to the second direction.

[0049] Reference Figure 3 and Figure 4A third receiving groove 18 and a fourth receiving groove 19 are respectively provided at 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, the bottoms of the third receiving groove 18 and the fourth receiving groove 19 are provided with openings that penetrate along 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 fixedly connected to the connecting seat 3, and the connecting rotating shaft 22 is arranged on the rotating shaft connector 23. Specifically, refer to Figure 3 and Figure 4 The shaft connector 23 is provided with the above-mentioned connecting shaft 22 and an opening, and corresponding positions on the third fork arm 16 and the fourth fork arm 17 are also provided with 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 another opening on the third fork arm 16 and the fourth fork arm 17 also correspond to each other, and then the shaft connector 23 can be fixed to the connecting seat 3 by bolt fasteners. Such a configuration can improve the stability of the connecting shaft 22 and facilitate the sleeve installation of the first torsion spring 7.

[0050] At the same time, the fifth receiving groove 20 and the sixth receiving groove 21 are correspondingly provided at the rear end of the flaw detection base 5, and the bottom of the fifth receiving groove 20 and the sixth receiving groove 21 is also provided with an opening 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 seat 3, and 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, and then the flaw detection base 5 is pushed backward until it is completely installed in the front end of the connecting seat 3, and then the two connecting shafts 22 are inserted into the connecting seat 3 and the flaw detection base 5, and the two shaft connectors 23 are fixed on the connecting seat 3, and the assembly of the connecting seat 3 and the flaw detection base 5 is completed.

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

[0052] Reference Figure 4, the detection mounting seat 24 is provided with a second receiving groove 14 on the side facing the second fork arm 12, and the inner side of the second fork arm 12 of the flaw detection base 5 is provided with a first receiving groove 13. The bottoms of the first receiving groove 13 and the second receiving groove 14 are both provided with openings, and openings are also provided on the other side of the detection head 6 and the first fork arm 11. The detection shaft 15 is inserted into the corresponding openings to enable 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 receiving groove 13 and the second receiving groove 14, and then the detection shaft 15 is inserted.

[0053] At the same time, a limit shaft 10 is provided on one 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 wire of the probe 25 extends 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 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. The camera 29 can be set to visually observe the surface of the locomotive wheel hub during the flaw detection process to avoid misdetection. The wire of the camera 29 can extend to the rear end of the probe rod 2 through the wiring groove 26 and the wiring channel.

[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 held by a user and the flaw detection device can be placed against the surface of the locomotive wheel hub. The probe rod 2 can extend the overall length of the flaw detection device, which is convenient 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. The flaw detection base 5 is rotatably mounted on the connecting base 3, and the detection head 6 is rotatably mounted on the flaw detection base 5. The flaw detection base 5 is matched with the connecting base 3 through the first torsion spring 7, and the detection head 6 is matched with the flaw detection base 5 through the second torsion spring 8, wherein the force direction of the first torsion spring 7 causes the flaw detection base 5 to rotate toward the abutting side, and the force direction of the second torsion spring 8 causes the detection head 6 to rotate away from the abutting side. In this way, 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 make the detection head 6 of the flaw detection device closely abut against the locomotive wheel hub without any effort, and the detection head 6 is not easy to separate from the locomotive wheel hub surface, thereby improving the detection efficiency and reducing the probability of wrong 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, and the eddy current flaw detection device is electrically connected to the signal generator and the 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 description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

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 base (3) around a first axis perpendicular to the extending direction of the detection rod (2); the first torsion spring (7) has two ends acting on the flaw detection base (5) and the connecting base (3) and is 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 on the flaw detection base The front end of the seat (5) is connected to the flaw detection base (5) for rotation 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) abutting 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.

2. A locomotive wheel hub eddy current flaw detection device as claimed in claim 1, characterized in that: 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).

3. A locomotive wheel hub eddy current flaw detection device as claimed in 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) on the side facing the first fork arm (11) for accommodating the second torsion spring (8) and abutting against one end of the second torsion spring (8); the detection head (6) is provided with a second accommodating groove (14) on the side facing the second fork arm (12) for accommodating the second torsion spring (8) and abutting against the other end of the second torsion spring (8); 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); the second torsion spring (8) is sleeved on one of the detection rotating shafts (15).

4. A locomotive wheel hub eddy current flaw detection device as claimed in 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 extension 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 sides thereof; 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 oriented toward the A fifth accommodating groove (20) and a sixth accommodating groove (21) are respectively provided on the side of 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).

5. A locomotive wheel hub eddy current flaw detection device as claimed in claim 4, characterized in that: The holding 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. A locomotive wheel hub eddy current flaw detection device as claimed in 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. A locomotive wheel hub eddy current flaw detection device as claimed in 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 connection seat (3) and the probe rod (2) are hollow inside 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) which 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 as claimed in 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 it.

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 as described in 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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