An eddy current flaw detection device for automotive alloy control arms

Abstract

The present invention provides an eddy current flaw detection device for automotive alloy control arms, belonging to the technical field of automotive parts. It includes a driving mechanism and a transportation mechanism. An eddy current probe is installed on the driving mechanism, and the driving mechanism is used to drive the eddy current probe to move. Both the upper alloy control arm and the lower alloy control arm are placed on the transportation mechanism, and the transportation mechanism is used to transport the upper alloy control arm and the lower alloy control arm to the detection station. Mounting seats are symmetrically installed on the transportation mechanism; a detection mechanism, which is used to assist the user in detecting defects on the upper alloy control arm and the lower alloy control arm, and the detection mechanism is connected to the mounting seat. By setting the detection mechanism, the present invention can perform flipping processing on the automotive alloy control arm to ensure that the eddy current probe can perform comprehensive detection on the automotive alloy control arm, further improving the accuracy of flaw detection of the automotive alloy control arm.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and particularly relates to an eddy current flaw detection device for automotive alloy control arms. Background Art

[0002] The manufacturing of alloy control arms usually involves multiple processes such as precision casting, forging, and CNC machining. Among them, precision casting can achieve complex geometric shapes, while forging can further enhance the mechanical properties of materials. However, during the actual production process of alloy control arms, surface flaw defects such as pits and cracks are inevitable. Among them, larger defects can be directly observed with the naked eye, but some minor defects are prone to missed detection or misdetection when detected by the naked eye or optical detection equipment, thus affecting the final quality of the alloy control arm. Therefore, the present invention provides an eddy current flaw detection device for automotive alloy control arms to meet the requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an eddy current flaw detection device for automotive alloy control arms. By setting up a detection mechanism, the automotive alloy control arm can be flipped to ensure that the eddy current probe can perform a full-range detection of the automotive alloy control arm, further improving the accuracy of flaw detection of the automotive alloy control arm. Through the above settings, the problem of low accuracy in the flaw detection process of the automotive alloy control arm can be solved.

[0004] To solve the above technical problem, the present invention provides the following technical solutions:

[0005] An eddy current flaw detection device for automotive alloy control arms, comprising a driving mechanism and a transportation mechanism. An eddy current probe is installed on the driving mechanism, and the driving mechanism is used to drive the eddy current probe to move. The upper alloy control arm and the lower alloy control arm are both placed on the transportation mechanism, and the transportation mechanism is used to transport the upper alloy control arm and the lower alloy control arm to the detection station. Mounting seats are symmetrically installed on the transportation mechanism; a detection mechanism, which is used to assist the user in detecting flaws on the upper alloy control arm and the lower alloy control arm, and the detection mechanism is connected to the mounting seats; the detection mechanism includes a limiting cylinder, a rotating rod, an arc-shaped frame, a V-shaped piece, a pull rod, and an elastic frame. The limiting cylinder is fixedly connected to the mounting seat on one side of the transportation mechanism, the elastic frame is fixedly connected to the mounting seat on the other side of the transportation mechanism, the rotating rod is rotatably connected in the limiting cylinder, the arc-shaped frame is fixedly connected to one end of the rotating rod, one end of the V-shaped piece is sleeved on the arc-shaped frame and the other end is fixed to the pull rod, and the pull rod is slidably inserted into the limiting cylinder.

[0006] Optionally, one end of the rotating rod is fixedly connected to a handle, and the other end of the rotating rod is fixedly connected to a turntable. The top of the limiting cylinder is fixedly connected to an adjusting plate. Adjusting holes are provided on both the turntable and the adjusting plate, and a plug rod is inserted into the adjusting plate.

[0007] Optionally, one end of the arc-shaped frame is fixedly connected to the outer wall of the turntable, and the other end of the arc-shaped frame is fixedly connected to a conical head. The overall contour of the arc-shaped frame is a circular arc contour protruding outward.

[0008] Optionally, one end of the conical head is fixed to the arc-shaped frame, the other end of the conical head is a conical structure sunken toward the middle, and the end of the conical head is a segmented structure.

[0009] Optionally, the overall contour of the V-shaped piece is "V"-shaped. One end of the pull rod far from the V-shaped piece is fixedly connected to a pull head, and an adjusting groove is provided on the outer wall of the pull rod near the end of the pull head.

[0010] Optionally, one end of the rotating rod close to the pull head is fixedly connected to an elastic clamping block. One end of the elastic clamping block is fixedly connected to the outer wall of the rotating rod, and the other end is fixedly connected to an adapter head. The contour of the adapter head is adapted to the contour of the adjusting groove. A pull ring is fixedly connected to the outer wall of the elastic clamping block, and a weakening groove sunken toward the middle is provided at the middle position of the inner wall of the elastic clamping block.

[0011] Optionally, one end of the elastic frame is fixedly connected to a second positioning strip, and a first positioning strip is fixedly connected to the outer wall of the elastic frame near the second positioning strip. The number of both the first positioning strip and the second positioning strip is two.

[0012] Optionally, both the first positioning strip and the second positioning strip have a circular arc contour protruding outward, and arc-shaped strips are fixedly connected to the ends of both the first positioning strip and the second positioning strip far from the elastic frame.

[0013] Optionally, a bending portion is provided at the middle position of the elastic frame, a lightening groove is provided on the elastic frame, and the elastic frame is a curved surface elastic structure.

[0014] Optionally, connecting portions are symmetrically installed at one end of both the upper alloy control arm and the lower alloy control arm. First mounting holes and second mounting holes are sequentially provided at the other end of the upper alloy control arm and the lower alloy control arm, and a hollowed-out portion is provided on the lower alloy control arm.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above solution, the detection device provided by the present application mainly detects and processes the defects of the automotive alloy control arm. By using an eddy current probe to detect the alloy control arm, it can accurately identify tiny damages that are difficult to observe with the naked eye and cannot be recognized by optical devices, thereby improving the detection accuracy. The detection mechanism can flip the automotive alloy control arm to ensure that the eddy current probe can detect the automotive alloy control arm comprehensively, further improving the accuracy of defect detection of the automotive alloy control arm.

[0017] By setting an arc-shaped frame, a V-shaped piece and a pull rod, the fixing effect on the upper alloy control arm and the lower alloy control arm can be achieved. Moreover, the user can release the fixing effect on the upper alloy control arm and the lower alloy control arm by pulling the pull rod outwards. Fixing the upper alloy control arm and the lower alloy control arm in this way not only has high efficiency but also is simple to operate. After the upper alloy control arm and the lower alloy control arm are fixed, the user can rotate the rotating rod to change the detection angle of the upper alloy control arm and the lower alloy control arm, so that the eddy current probe can detect the defects of the upper alloy control arm and the lower alloy control arm without dead angles, improving the detection accuracy. When using the above structure to fix the upper alloy control arm and the lower alloy control arm, it will not cause any obstruction to their structures, and there is no need to disassemble and assemble repeatedly during the flipping process, thereby improving the efficiency of defect detection and the precision of detection.

[0018] By setting an elastic frame, the elastic frame is a curved elastic structure, and both the first positioning strip and the second positioning strip have an outward elastic force. The user can first press the ends of the first positioning strip and the second positioning strip to make them contract and deform, and then let the first positioning strip and the second positioning strip pass through the first mounting hole and the second mounting hole. After the user releases the hand, under the action of the elastic force, the first positioning strip and the second positioning strip will automatically recover and deform and abut and be clamped on the inner walls of the first mounting hole and the second mounting hole. When the first positioning strip and the second positioning strip are clamped in the first mounting hole and the second mounting hole, with the positioning effect of the positioning strip and the supporting effect of the elastic frame, the supporting and fixing effect on the upper alloy control arm and the lower alloy control arm can be achieved, thereby improving their stability during the detection process and the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0020] Figure 1 It is a first perspective three-dimensional structural schematic diagram of an eddy current flaw detection device for an automotive alloy control arm;

[0021] Figure 2Schematic diagram of the second perspective three-dimensional structure of the eddy current flaw detection device for the automotive alloy control arm;

[0022] Figure 3 Schematic diagram of the first perspective three-dimensional structure of the automotive suspension system in cooperation with the upper alloy control arm and the lower alloy control arm;

[0023] Figure 4 Schematic diagram of the second perspective three-dimensional structure of the automotive suspension system in cooperation with the upper alloy control arm and the lower alloy control arm;

[0024] Figure 5 Schematic diagram of the enlarged three-dimensional structure of the upper alloy control arm;

[0025] Figure 6 Schematic diagram of the enlarged three-dimensional structure of the lower alloy control arm;

[0026] Figure 7 Schematic diagram of the first perspective three-dimensional structure of the transportation mechanism and the detection mechanism in cooperation;

[0027] Figure 8 Schematic diagram of the second perspective three-dimensional structure of the transportation mechanism and the detection mechanism in cooperation;

[0028] Figure 9 Schematic diagram of the first perspective three-dimensional structure of the detection mechanism in cooperation;

[0029] Figure 10 Schematic diagram of the second perspective three-dimensional structure of the detection mechanism in cooperation;

[0030] Figure 11 Schematic diagram of the sectional three-dimensional structure of the detection mechanism in cooperation;

[0031] Figure 12 For Figure 11 Enlarged three-dimensional structure diagram at position A in;

[0032] Figure 13 Enlarged structure diagram of the cooperation of the arc-shaped frame, V-shaped piece and pull rod;

[0033] Figure 14 Enlarged three-dimensional structure diagram of the arc-shaped frame and the conical head;

[0034] Figure 15 Enlarged three-dimensional structure diagram of the cooperation of the elastic frame and the upper alloy control arm;

[0035] Figure 16 Enlarged three-dimensional structure diagram of the cooperation of the elastic frame and the lower alloy control arm;

[0036] Figure 17 Enlarged three-dimensional structure diagram of the elastic frame.

[0037] Reference signs:

[0038] 1. Driving mechanism; 2. Eddy current probe; 3. Transport mechanism; 4. Mounting base; 5. Limiting cylinder; 501. Adjusting plate; 502. Insert rod; 6. Rotating rod; 601. Handle; 602. Turntable; 603. Adjusting hole; 604. Elastic clamping block; 605. Adapter head; 606. Pull ring; 7. Arc-shaped frame; 701. Tapered head; 8. V-shaped piece; 9. Pull rod; 901. Pull head; 902. Adjusting groove; 10. Elastic frame; 11. Bent part; 12. First positioning strip; 13. Second positioning strip; 14. Arc-shaped strip; 15. Upper alloy control arm; 16. Connecting part; 17. First mounting hole; 18. Lower alloy control arm; 19. Second mounting hole; 20. Hollow part.

[0039] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0040] The following describes in detail an eddy current flaw detection device for an automotive alloy control arm provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that in the specification, references to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. Additionally, when combining embodiments to describe specific features, structures or characteristics, implementing such features, structures or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0042] Generally, terms can be understood, at least in part, from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0043] It is understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner, such that "on" not only means "directly on" something, but also includes the meaning of being on something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but may also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0044] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein may be similarly interpreted accordingly.

[0045] As Figures 1 to 6 shown, an eddy current flaw detection device for an automotive alloy control arm according to an embodiment of the present invention includes a driving mechanism 1 and a transporting mechanism 3. An eddy current probe 2 is mounted on the driving mechanism 1. The driving mechanism 1 is used to drive the eddy current probe 2 to move. The upper alloy control arm 15 and the lower alloy control arm 18 are both placed on the transporting mechanism 3. The transporting mechanism 3 is used to transport the upper alloy control arm 15 and the lower alloy control arm 18 to the detection station. Mounting seats 4 are symmetrically mounted on the transporting mechanism 3; a detection mechanism, which is used to assist the user in detecting flaws on the upper alloy control arm 15 and the lower alloy control arm 18. The detection mechanism is connected to the mounting seats 4. The detection device provided in this application is mainly for detecting and processing flaws of the automotive alloy control arm. Among them, the operator places the automotive alloy control arm to be detected on the transporting mechanism 3, and then the transporting assembly transports the upper alloy control arm 15 and the lower alloy control arm 18 to the detection station. At this time, the operator fixes the upper alloy control arm 15 and the lower alloy control arm 18 on the transporting mechanism 3 with the help of the detection mechanism. After the upper alloy control arm 15 and the lower alloy control arm 18 are fixed, the driving mechanism 1 is started. An eddy current probe 2 is mounted on the driving mechanism 1, and the driving mechanism 1 will automatically move the eddy current probe 2 to the position of the detection mechanism, and then detect flaws on the upper alloy control arm 15 and the lower alloy control arm 18 with the help of the eddy current probe 2. Using the eddy current probe 2 to detect the alloy control arm can accurately identify tiny damages that are difficult to observe with the naked eye and cannot be identified by optical devices, thereby improving the detection accuracy. In addition, the detection mechanism can flip the automotive alloy control arm to ensure that the eddy current probe 2 can perform a full-range detection on the automotive alloy control arm, further improving the accuracy of flaw detection of the automotive alloy control arm.

[0046] In this embodiment, as Figures 1 to 6 shown, connection parts 16 are symmetrically installed at one ends of the upper alloy control arm 15 and the lower alloy control arm 18. First mounting holes 17 and second mounting holes 19 are successively formed at the other ends of the upper alloy control arm 15 and the lower alloy control arm 18. A hollowed-out part 20 is formed on the lower alloy control arm 18. Referring to the attached general specification Figures 3 to 6 it can be understood that the structural states of the upper alloy control arm 15 and the lower alloy control arm 18 during actual use. The connection parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18 are in a cylindrical structure. The connection parts 16 are connected to other components by bolts. The first mounting holes 17 and the second mounting holes 19 on the upper alloy control arm 15 and the lower alloy control arm 18 are also used for connection and fixation with other components. The setting of the hollowed-out part 20 on the lower alloy control arm 18 is to reduce the consumables of the lower alloy control arm 18 without reducing the structural strength of the lower alloy control arm 18, thereby reducing the manufacturing cost. The detection mechanism provided in this application performs detection and processing on the upper alloy control arm 15 and the lower alloy control arm 18 based on their structural characteristics. The structural setting of the detection mechanism can be adapted to the structures of the upper alloy control arm 15 and the lower alloy control arm 18. In this way, on the one hand, the detection efficiency of the upper alloy control arm 15 and the lower alloy control arm 18 is improved, and on the other hand, the detection accuracy is improved.

[0047] As an implementation manner in this embodiment, as Figures 7 to 14As shown in the figure, the detection mechanism includes a limit cylinder 5, a rotating rod 6, an arc-shaped frame 7, a V-shaped piece 8, a pull rod 9, and an elastic frame 10. The limit cylinder 5 is fixedly connected to the mounting seat 4 on one side of the transportation mechanism 3, and the elastic frame 10 is fixedly connected to the mounting seat 4 on the other side of the transportation mechanism 3. The rotating rod 6 is rotatably connected inside the limit cylinder 5. One end of the arc-shaped frame 7 is fixedly connected to the rotating rod 6. One end of the V-shaped piece 8 is sleeved on the arc-shaped frame 7, and the other end is fixed to the pull rod 9. The pull rod 9 is slidably inserted into the limit cylinder 5. One end of the rotating rod 6 is fixedly connected with a handle 601, and the other end of the rotating rod 6 is fixedly connected with a turntable 602. The top of the limit cylinder 5 is fixedly connected with an adjusting plate 501. Adjusting holes 603 are provided on both the turntable 602 and the adjusting plate 501. An insertion rod 502 is inserted into the adjusting plate 501. The detection mechanism is respectively fixed on the mounting seats 4 on both sides of the transportation mechanism 3. Among them, the limit cylinder 5, the rotating rod 6, the arc-shaped frame 7, the V-shaped piece 8, and the pull rod 9 are all installed on the mounting seat 4 on the same side. The rotating rod 6 can rotate inside the limit cylinder 5. The adjusting holes 603 are evenly provided on the turntable 602. The adjusting plate 501 on the top of the limit cylinder 5 is provided with adjusting holes 603 having the same size as those on the turntable 602. The user can rotate the rotating rod 6 by rotating the handle 601, or can fix the rotating rod 6 by inserting the insertion rod 502 into the same adjusting hole 603 on both the adjusting plate 501 and the turntable 602 at the same time. The adjusting holes 603 with different heights and staggered with each other are provided on both the turntable 602 and the adjusting plate 501. Such a setting is to improve the accuracy of the angle adjustment of the rotating rod 6, thereby ensuring the accuracy of the angle adjustment of the upper alloy control arm 15 and the lower alloy control arm 18. The user can rotate the rotating rod 6 at will according to the needs, so that the eddy current probe 2 can detect the defects of the upper alloy control arm 15 and the lower alloy control arm 18 from different angles, improving the detection accuracy.

[0048] In this embodiment, as Figures 7 to 14As shown, one end of the arc-shaped frame 7 is fixedly connected to the outer wall of the turntable 602, and the other end of the arc-shaped frame 7 is fixedly connected with a conical head 701. The overall contour of the arc-shaped frame 7 is a circular arc contour protruding outward. One end of the conical head 701 is fixed to the arc-shaped frame 7, and the other end of the conical head 701 is a conical structure recessed toward the middle. The end of the conical head 701 is a segmented structure. The arc-shaped frame 7 mainly fixes the connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18. Since the overall contour of the arc-shaped frame 7 is a circular arc contour protruding outward, the arc-shaped structure enables the arc-shaped frame 7 to have an outward expansion elastic force. The user inserts the conical heads 701 on the two arc-shaped frames 7 into the two connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18 in sequence, and then uses the elastic force of the arc-shaped frame 7 to fix the conical heads 701 in the connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18, so as to achieve the fixing effect on the upper alloy control arm 15 and the lower alloy control arm 18. Here, the conical head 701 and the arc-shaped frame 7 are integrally structured, which can reduce the manufacturing process of the two and is more convenient for production and manufacturing. Moreover, since one end of the conical head 701 is a conical structure recessed toward the middle and the end is a segmented structure, such a structural setting makes the conical head 701 not only have an inward recessed contour, but also can be extruded and deformed to shrink. When the user inserts the conical head 701 into the connecting part 16, first, the conical structure recessed toward the middle can be used for auxiliary guiding, and during the continuous insertion process, the segmented conical head 701 will deform and shrink during the extrusion process of the connecting part 16. During the contraction process of the conical head 701, the inner wall of the connecting part 16 will be extruded, so as to fix the connecting part 16 by means of the extrusion force. Such a fixing method will not cause any obstruction to the structures of the upper alloy control arm 15 and the lower alloy control arm 18, and is simple and convenient in the actual operation process, thus effectively improving the efficiency and accuracy of the defect detection of the upper alloy control arm 15 and the lower alloy control arm 18.

[0049] In this embodiment, as Figures 7 to 14As shown, the overall contour of the V-shaped piece 8 is a "V" shape, and the end of the pull rod 9 away from the V-shaped piece 8 is fixedly connected to a pull head 901, and an adjusting groove 902 is provided on the outer wall of the pull rod 9 close to the pull head 901, and an elastic block 604 is fixedly connected to the end of the rotating rod 6 close to the pull head 901, and one end of the elastic block 604 is fixedly connected to the outer wall of the rotating rod 6, and the other end is fixedly connected to an adapter head 605, and the contour of the adapter head 605 is adapted to the contour of the adjusting groove 902, and a pull ring 606 is fixedly connected to the outer wall of the elastic block 604, and a weakened groove recessed toward the middle is provided at the middle position of the inner wall of the elastic block 604. When the user pulls the pull head 901, the pull rod 9 will slide inside the rotating rod 6 At the same time, the two sides of the V-shaped piece 8 will also move closer to each other and shrink into the rotating rod 6. During the contraction of the V-shaped piece 8, the two sides of its "V"-shaped structure will respectively pull the two conical heads 701 and drive the arc frame 7 to deform. Since the arc frame 7 itself has an outwardly convex curvature, when the V-shaped piece 8 pulls the arc frame 7, the two conical heads 701 will also move closer to each other and be pulled out from the connecting portion 16. This arrangement uses the arc structure of the arc frame 7 to enable the user to pull the pull head 901 outward, The conical head 701 is pulled out from the connecting portion 16, and the fixing effect on the upper alloy control arm 15 and the lower alloy control arm 18 is released. The elastic block 604 is set on the rotating rod 6, the adapter head 605 on the elastic block 604 just matches the contour of the adjusting slot 902 on the pull rod 9, and the adjusting slot 902 is a triangular structure. When the user pulls the pull rod 9 outward, an inclined surface in the adjusting slot 902 will squeeze the inclined surface on the adapter head 605. Since a weakened groove recessed toward the middle is provided at the middle position of the inner wall of the elastic block 604, the elastic block 604 can be deformed at the position of the weakened groove during the squeezing process. Therefore, during the squeezing process of the adjusting slot 902, the elastic block 604 will drive the adapter head 605 to elastically avoid, so that the pull rod 9 can be pulled out smoothly. When the pulling force on the pull rod 9 stops, the elasticity of the arc frame 7 Under the action of force, the V-shaped piece 8 will drive the pull rod 9 in the opposite direction. At this time, the straight surface of the adjusting groove 902 will contact and block the straight surface on the adapter head 605. Under the blocking action of the adapter head 605, the adjusting groove 902 cannot pass the adapter head 605, so the pull rod 9 cannot slide reversely in the rotating rod 6. At this time, if the user pulls the pull ring 606 outward, since the pull ring 606 is installed in the middle position of the elastic block 604, the elastic block 604 will be deformed at the position of the weakened groove during the pulling process of the pull ring 606, so that the adapter head 605 is pulled out of the adjusting groove 902. At this time, the pull rod 9 can slide reversely in the rotating rod 6, and the arc frame 7 can also be automatically reset under the action of elasticity.

[0050] In summary, the structural arrangement of the arc-shaped frame 7, the V-shaped piece 8 and the upper pull rod 9 can achieve the fixing effect on the upper alloy control arm 15 and the lower alloy control arm 18. Moreover, the user can release the fixing effect on the upper alloy control arm 15 and the lower alloy control arm 18 by pulling the pull rod 9 outwards. During the process of the user pulling the pull rod 9 outwards, the elastic clamping block 604 will automatically lock the pull rod 9 to prevent the pull rod 9 from automatically retracting when the user releases it. At the same time, it is also convenient for the user to control the telescopic amount of the pull rod 9. Fixing the upper alloy control arm 15 and the lower alloy control arm 18 in this way not only has high efficiency but also is simple to operate. After the fixing of the upper alloy control arm 15 and the lower alloy control arm 18 is completed, the user can rotate the rotating rod 6 to change the detection angle of the upper alloy control arm 15 and the lower alloy control arm 18, so that the eddy current probe 2 can detect the upper alloy control arm 15 and the lower alloy control arm 18 without dead angles, improving the detection accuracy. When using the above structure to fix the upper alloy control arm 15 and the lower alloy control arm 18, it will not cause any obstruction to the structures of the two, and there is no need for repeated disassembly and assembly during the flipping process, thus improving the efficiency of flaw detection and the precision of detection.

[0051] In this embodiment, as Figures 1 to 9 and Figures 15 to 17 shown, one end of the elastic frame 10 is fixedly connected with a second positioning strip 13. On the outer wall of the elastic frame 10 near one end of the second positioning strip 13, a first positioning strip 12 is fixedly connected. The number of the first positioning strip 12 and the second positioning strip 13 is two. Both the first positioning strip 12 and the second positioning strip 13 have an outwardly convex arc-shaped contour. One end of the first positioning strip 12 and the second positioning strip 13 far from the elastic frame 10 is fixedly connected with an arc-shaped strip 14. A bending part 11 is arranged at the middle position of the elastic frame 10. A lightweight groove is formed on the elastic frame 10. The elastic frame 10 is a curved surface elastic structure. As described above, the conical head 701 can fix the connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18. When the upper alloy control arm 15 and the lower alloy control arm 18 are in a horizontal state (such as the state shown in Figure 9 ), at this time, the pressure borne by the connecting part 16 is the largest. In order to improve the structural stability of the upper alloy control arm 15 and the lower alloy control arm 18 during the detection process, the elastic frame 10 is provided to support and fix the positions of the first mounting hole 17 and the second mounting hole 19 on the upper alloy control arm 15 and the lower alloy control arm 18.

[0052] Specifically, the elastic frame 10 is installed on the mounting seat 4 on the side opposite to the arc-shaped frame 7. The elastic frame 10 is a curved elastic structure, and a bending portion 11 is provided at the middle position of the elastic frame 10. The bending portion 11 bends the middle position of the elastic frame 10, so that the elastic frame 10 is prone to be deformed by force at the position of the bending portion 11. Such a setting is on the one hand to improve the elastic performance of the overall structure of the elastic frame 10, and on the other hand to facilitate the user to press the elastic frame 10 to deform. The first positioning strip 12 and the second positioning strip 13 installed on the elastic frame 10 are respectively used to position the first mounting hole 17 and the second mounting hole 19. Since both the first positioning strip 12 and the second positioning strip 13 have an outwardly convex arc-shaped profile, the first positioning strip 12 and the second positioning strip 13 both have an outward elastic force. The user can first press the ends of the first positioning strip 12 and the second positioning strip 13 to make the two contract and deform, and then let the first positioning strip 12 and the second positioning strip 13 pass through the first mounting hole 17 and the second mounting hole 19. After the user releases the hand, under the action of the elastic force, the first positioning strip 12 and the second positioning strip 13 will automatically recover and deform and abut and engage with the inner walls of the first mounting hole 17 and the second mounting hole 19. When the first positioning strip 12 and the second positioning strip 13 are engaged in the first mounting hole 17 and the second mounting hole 19, the support and fixation effects of the upper alloy control arm 15 and the lower alloy control arm 18 can be achieved by means of the positioning effect of the positioning strip and the support effect of the elastic frame 10, thereby improving the stability of the two during the detection process and improving the detection accuracy.

[0053] Further, due to the difference in the sizes of the structures of the upper alloy control arm 15 and the lower alloy control arm 18, when the elastic frame 10 is used to support and fix the upper alloy control arm 15, the second positioning strip 13 is in an idle state (as Figure 15 shown), and at this time the second positioning strip 13 will not cause any blockage or interference to the structure of the upper alloy control arm 15, so it will not affect the eddy current probe 2 to detect defects on the upper alloy control arm 15. When the elastic frame 10 is used to support and fix the lower alloy control arm 18, the second positioning strip 13 can position and support the second mounting hole 19, and the first positioning strip 12 is inserted into the hollow portion 20 to position and support the hollow portion 20 (as Figure 16 shown). In the above scheme, when the first positioning strip 12 and the second positioning strip 13 support and position the upper alloy control arm 15 and the lower alloy control arm 18, they both support from the bottom and inside of the upper alloy control arm 15 and the lower alloy control arm 18, and will not cause any blockage to the tops of the two, so it will not affect the eddy current probe 2 to detect defects on the upper alloy control arm 15 and the lower alloy control arm 18.

[0054] The working principle of the technical solution provided by the present invention is as follows:

[0055] During use, the operator places the automotive alloy control arm to be detected on the transport mechanism 3, and then transports the upper alloy control arm 15 and the lower alloy control arm 18 to the detection station through the transport component. At this time, the user first inserts the tapered heads 701 on the two arc-shaped frames 7 into the two connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18 in sequence, and then fixes the tapered heads 701 in the connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18 by means of the elastic force of the arc-shaped frames 7, so as to achieve the fixing effect on the upper alloy control arm 15 and the lower alloy control arm 18. Since one end of the tapered head 701 is a tapered structure that is concave towards the middle and the end is a segmented structure, such a structural setting makes the tapered head 701 not only have a concave profile towards the middle, but also can be squeezed and deformed and shrunk itself. During the process of the user inserting the tapered head 701 into the connecting part 16, first, the tapered structure that is concave towards the middle can be used for auxiliary guidance, and during the continuous insertion process, the segmented tapered head 701 will deform and shrink during the extrusion process of the connecting part 16. During the shrinking process of the tapered head 701, the inner wall of the connecting part 16 will be extruded, so as to fix the connecting part 16 by means of the extrusion force. After the upper alloy control arm 15 and the lower alloy control arm 18 are fixed, the driving mechanism 1 is started. An eddy current probe 2 is installed on the driving mechanism 1, and the driving mechanism 1 will automatically move the eddy current probe 2 to the detection mechanism position, and then use the eddy current probe 2 to detect the upper alloy control arm 15 and the lower alloy control arm 18 for defects. Using the eddy current probe 2 to detect the alloy control arm can accurately identify the tiny damages that are difficult to observe with the naked eye and cannot be identified by optical equipment, thus improving the detection accuracy. The user can rotate the rotating rod 6 by rotating the handle 601, or can also fix the rotating rod 6 by inserting the inserting rod 502 into the same adjusting hole 603 on the adjusting plate 501 and the turntable 602 at the same time. Different heights and staggered adjusting holes 603 are provided on both the turntable 602 and the adjusting plate 501. Such a setting is to improve the accuracy of the angle adjustment of the rotating rod 6, thus ensuring the accuracy of the angle adjustment of the upper alloy control arm 15 and the lower alloy control arm 18. The user can rotate the rotating rod 6 arbitrarily according to the needs, so that the eddy current probe 2 can detect the upper alloy control arm 15 and the lower alloy control arm 18 for defects from different angles, improving the detection accuracy.

[0056] The elastic frame 10 is a curved elastic structure, and a bending portion 11 is provided at the middle position of the elastic frame 10. The bending portion 11 bends the middle position of the elastic frame 10, so that the elastic frame 10 is easily deformed by force at the position of the bending portion 11. The first positioning strip 12 and the second positioning strip 13 installed on the elastic frame 10 are respectively used to position the first mounting hole 17 and the second mounting hole 19. Since both the first positioning strip 12 and the second positioning strip 13 have an outwardly convex arc-shaped contour, the first positioning strip 12 and the second positioning strip 13 both have an outward elastic force. The user can first press the ends of the first positioning strip 12 and the second positioning strip 13 to make them contract and deform, and then pass the first positioning strip 12 and the second positioning strip 13 through the first mounting hole 17 and the second mounting hole 19. After the user releases the hand, under the action of the elastic force, the first positioning strip 12 and the second positioning strip 13 will automatically recover and deform and abut and engage with the inner walls of the first mounting hole 17 and the second mounting hole 19. When the first positioning strip 12 and the second positioning strip 13 are engaged in the first mounting hole 17 and the second mounting hole 19, the supporting and fixing effects of the upper alloy control arm 15 and the lower alloy control arm 18 can be achieved by means of the positioning effect of the positioning strip and the supporting effect of the elastic frame 10, thereby improving their stability during the detection process and improving the detection accuracy.

[0057] When the upper alloy control arm 15 and the lower alloy control arm 18 need to be disassembled, the user pulls the pull head 901 outward, and the pull rod 9 will slide in the rotating rod 6. At the same time, the two sides of the V-shaped piece 8 will also move closer to each other and shrink into the rotating rod 6. During the shrinkage of the V-shaped piece 8, the two sides of its "V"-shaped structure will respectively pull the two conical heads 701 and drive the arc frame 7 to deform. Since the arc frame 7 itself has an outward convex curvature, when the V-shaped piece 8 pulls the arc frame 7, the two conical heads 70 1 will also approach each other and be pulled out from the connecting portion 16. With the help of the arc structure of the arc frame 7, when the user pulls the pull head 901 outward, the conical head 701 is pulled out from the connecting portion 16, releasing the fixing effect of the upper alloy control arm 15 and the lower alloy control arm 18. It is worth mentioning that when the user pulls the pull rod 9 outward, an inclined surface in the adjustment groove 902 will squeeze the inclined surface on the adapter head 605. Since the middle position of the inner wall of the elastic card block 604 is provided with a concave groove toward the middle, the elastic card block 604 is provided with a concave groove toward the middle. The weakened groove is formed, so the elastic block 604 can be deformed at the position of the weakened groove during the extrusion process. Therefore, during the extrusion process of the adjusting groove 902, the elastic block 604 will drive the adapter head 605 to elastically avoid, so that the pull rod 9 can be smoothly pulled out. When the pulling force on the pull rod 9 stops, the V-shaped piece 8 will pull the pull rod 9 in the opposite direction under the elastic action of the arc frame 7. At this time, the straight surface of the adjusting groove 902 will contact and block the straight surface on the adapter head 605. The lower adjustment groove 902 cannot go over the adapter head 605, so the pull rod 9 cannot slide in the reverse direction in the rotating rod 6. At this time, if the user pulls the pull ring 606 outward, since the pull ring 606 is installed in the middle position of the elastic block 604, the pull ring 606 will drive the elastic block 604 to deform at the position of the weakened groove during the pulling process, so that the adapter head 605 is pulled out of the adjustment groove 902. At this time, the pull rod 9 can slide in the reverse direction in the rotating rod 6, and the arc frame 7 can also automatically reset under the action of elasticity.

[0058] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An eddy current flaw detection device for an automotive alloy control arm, comprising a driving mechanism and a transportation mechanism, characterized in that An eddy current probe is installed on the driving mechanism, and the driving mechanism is used to drive the eddy current probe to move. The upper alloy control arm and the lower alloy control arm are both placed on the conveying mechanism, and the conveying mechanism is used to transport the upper alloy control arm and the lower alloy control arm to the detection station. Mounting seats are symmetrically installed on the conveying mechanism; A detection mechanism, which is used to assist the user in detecting defects on the upper alloy control arm and the lower alloy control arm, and the detection mechanism is connected to the mounting seat; The detection mechanism includes a limiting cylinder, a rotating rod, an arc-shaped frame, a V-shaped piece, a pull rod and an elastic frame. The limiting cylinder is fixedly connected to the mounting seat on one side of the conveying mechanism, and the elastic frame is fixedly connected to the mounting seat on the other side of the conveying mechanism. The rotating rod is rotatably connected in the limiting cylinder. One end of the arc-shaped frame is fixedly connected to the rotating rod, one end of the V-shaped piece is sleeved on the arc-shaped frame and the other end is fixed to the pull rod, and the pull rod is slidably inserted into the limiting cylinder; One end of the rotating rod is fixedly connected with a handle, the other end of the rotating rod is fixedly connected with a turntable, the top of the limiting cylinder is fixedly connected with an adjusting plate, adjusting holes are opened on both the turntable and the adjusting plate, and a plug rod is inserted into the adjusting plate; One end of the arc-shaped frame is fixedly connected to the outer wall of the turntable, the other end of the arc-shaped frame is fixedly connected with a conical head, and the overall contour of the arc-shaped frame is a circular arc contour protruding outwards; One end of the conical head is fixed to the arc-shaped frame, the other end of the conical head is a conical structure sunken towards the middle, and the end of the conical head is a segmented structure; One end of the elastic frame is fixedly connected with a second positioning strip, and a first positioning strip is fixedly connected to the outer wall of the elastic frame near one end of the second positioning strip. The number of the first positioning strips and the second positioning strips is two; Both the first positioning strip and the second positioning strip have a circular arc contour protruding outwards, and arc-shaped strips are fixedly connected to the ends of the first positioning strip and the second positioning strip away from the elastic frame.

2. The eddy current flaw detection device for the automotive alloy control arm according to claim 1, characterized in that, The overall contour of the V-shaped piece is "V" shaped. One end of the pull rod away from the V-shaped piece is fixedly connected with a pull head, and an adjusting groove is opened on the outer wall of the pull rod near one end of the pull head.

3. The eddy current flaw detection device for the automotive alloy control arm according to claim 2, characterized in that, One end of the rotating rod near the pull head is fixedly connected with an elastic clamping block. One end of the elastic clamping block is fixedly connected to the outer wall of the rotating rod and the other end is fixedly connected with an adapter head. The contour of the adapter head is adapted to the contour of the adjusting groove. A pull ring is fixedly connected to the outer wall of the elastic clamping block, and a weakening groove sunken towards the middle is opened at the middle position of the inner wall of the elastic clamping block.

4. The eddy current flaw detection device for the automotive alloy control arm according to claim 1, characterized in that, A bending part is arranged at the middle position of the elastic frame, a lightening groove is opened on the elastic frame, and the elastic frame is a curved surface elastic structure.

5. The eddy current flaw detection device for the automotive alloy control arm according to claim 1, characterized in that, Connecting parts are symmetrically installed at one end of both the upper alloy control arm and the lower alloy control arm. A first mounting hole and a second mounting hole are sequentially opened at the other end of the upper alloy control arm and the lower alloy control arm, and a hollowed-out part is opened on the lower alloy control arm.

Images