Eddy current flaw detection device for automobile alloy control arm

Abstract

The invention provides an eddy current flaw detection device for an automobile alloy control arm, and belongs to the technical field of automobile parts. Comprising a driving mechanism and a conveying mechanism, an eddy current probe is installed on the driving mechanism, the driving mechanism is used for driving the eddy current probe to move, an upper alloy control arm and a lower alloy control arm are both placed on the conveying mechanism, and the conveying mechanism is used for conveying the upper alloy control arm and the lower alloy control arm to a detection station. Mounting seats are symmetrically mounted on the conveying mechanism; and the detection mechanism is used for assisting a user in detecting flaws on the upper alloy control arm and the lower alloy control arm, and the detection mechanism is connected with the mounting seat. According to the automobile alloy control arm flaw detection device, the automobile alloy control arm can be overturned by arranging the detection mechanism, so that the automobile alloy control arm can be comprehensively detected by the eddy current probe, and the flaw detection accuracy of the automobile alloy control arm is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to an eddy current flaw detection device for an automobile alloy control arm. Background Art

[0002] The manufacture 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 the material. However, in the actual production process of alloy control arms, surface 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 easy to lead to missed detection and wrong detection when detected by naked eye observation or optical detection equipment, thereby affecting the final quality of the alloy control arm. Therefore, the present invention provides an eddy current flaw detection device for an automobile alloy control arm to meet the needs. 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 an automobile alloy control arm, which can flip the automobile alloy control arm by setting a detection mechanism to ensure that the eddy current probe can perform all-round detection of the automobile alloy control arm, thereby further improving the accuracy of defect detection of the automobile alloy control arm. The above setting can solve the problem of low accuracy of the automobile alloy control arm during defect detection.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: An eddy current flaw detection device for an automobile alloy control arm comprises a driving mechanism and a transport mechanism, wherein an eddy current probe is installed on the driving mechanism, and the driving mechanism is used to drive the eddy current probe to move, an upper alloy control arm and a lower alloy control arm are both placed on the transport mechanism, and the transport mechanism is used to transport the upper alloy control arm and the lower alloy control arm to a detection station, and a mounting seat is symmetrically installed on the transport mechanism; a detection mechanism, wherein the detection mechanism is used to assist a 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 comprises a limit cylinder, a rotating rod, an arc frame, a V-shaped piece, a pull rod and an elastic frame, wherein the limit cylinder is fixedly connected to the mounting seat on one side of the transport mechanism, and the elastic frame is fixedly connected to the mounting seat on the other side of the transport mechanism, the rotating rod is rotatably connected in the limit cylinder, the arc frame is fixedly connected to one end of the rotating rod, one end of the V-shaped piece is sleeved on the arc frame and the other end is fixed to the pull rod, and the pull rod is slidably inserted in the limit cylinder.

[0005] Optionally, one end of the rotating rod is fixedly connected to a handle, the other end of the rotating rod is fixedly connected to a rotating disk, the top of the limiting cylinder is fixedly connected to an adjustment plate, adjustment holes are provided on the rotating disk and the adjustment plate, and a rod is inserted into the adjustment plate.

[0006] Optionally, one end of the arc frame is fixedly connected to the outer wall of the turntable, and the other end of the arc frame is fixedly connected to a conical head, and the overall contour of the arc frame is an outwardly protruding arc contour.

[0007] Optionally, one end of the conical head is fixed to the arc frame, the other end of the conical head is a conical structure recessed toward the middle, and the end of the conical head is a segmented structure.

[0008] Optionally, the overall contour of the V-shaped piece is "V"-shaped, the end of the pull rod away from the V-shaped piece is fixedly connected to a pull head, and an adjustment groove is provided on the outer wall of the pull rod near the pull head.

[0009] Optionally, an elastic block is fixedly connected to one end of the rotating rod close to the pulling head, one end of the elastic 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 matched with the contour of the adjustment groove, a pull ring is fixedly connected to the outer wall of the elastic block, and a weakened groove recessed toward the middle is opened in the middle position of the inner wall of the elastic block.

[0010] Optionally, a second positioning bar is fixedly connected to one end of the elastic frame, a first positioning bar is fixedly connected to an outer wall of one end of the elastic frame close to the second positioning bar, and the number of the first positioning bar and the number of the second positioning bar are both two.

[0011] Optionally, the first positioning bar and the second positioning bar both have an arc-shaped contour protruding outward, and one end of the first positioning bar and the second positioning bar away from the elastic frame is fixedly connected to an arc-shaped bar.

[0012] Optionally, a bending portion is provided at a middle position of the elastic frame, a lightweight groove is provided on the elastic frame, and the elastic frame is a curved elastic structure.

[0013] Optionally, one end of the upper alloy control arm and the lower alloy control arm are symmetrically installed with a connecting portion, the other ends of the upper alloy control arm and the lower alloy control arm are respectively provided with a first mounting hole and a second mounting hole, and the lower alloy control arm is provided with a hollow portion.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, the detection device provided by the present application is mainly used to detect defects in automobile alloy control arms. The eddy current probe is used to detect the alloy control arms, which can accurately identify tiny damages that are difficult to observe with the naked eye and cannot be identified by optical equipment, thereby improving the accuracy of detection. The detection mechanism can flip the automobile alloy control arm to ensure that the eddy current probe can perform all-round detection of the automobile alloy control arm, further improving the accuracy of defect detection of the automobile alloy control arm.

[0015] By arranging an arc frame, a V-shaped piece and a pull rod, the fixing effect of the upper alloy control arm and the lower alloy control arm can be achieved, and the user can release the fixing effect of the upper alloy control arm and the lower alloy control arm by pulling the pull rod outward. Fixing the upper alloy control arm and the lower alloy control arm in this way is not only efficient but also 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 perform defect detection on the upper alloy control arm and the lower alloy control arm without dead angles, thereby improving the detection accuracy. When the upper alloy control arm and the lower alloy control arm are fixed using the above structure, no obstruction will be caused to the structures of the two, and there is no need for repeated disassembly and assembly during the flipping process, thereby improving the efficiency of defect detection and the detection accuracy.

[0016] By setting an elastic frame, the elastic frame is a curved elastic structure, and the first positioning bar and the second positioning bar both have outward elastic force. The user can first press the ends of the first positioning bar and the second positioning bar to make them shrink and deform, and then let the first positioning bar and the second positioning bar pass through the first mounting hole and the second mounting hole. After the user lets go, the first positioning bar and the second positioning bar will automatically recover and resist and be connected to the inner walls of the first mounting hole and the second mounting hole under the action of the elastic force. When the first positioning bar and the second positioning bar are connected to the first mounting hole and the second mounting hole, the positioning effect of the positioning bar and the supporting effect of the elastic frame can be used to achieve the supporting and fixing effect of the upper alloy control arm and the lower alloy control arm, thereby improving the stability of the two during the detection process and improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the eddy current flaw detection device for the automobile alloy control arm from the first perspective; Figure 2 It is a schematic diagram of the stereoscopic structure of the eddy current flaw detection device for automobile alloy control arm from the second perspective; Figure 3 It is a schematic diagram of the first-person perspective stereoscopic structure of the automobile suspension system and the upper alloy control arm and the lower alloy control arm; Figure 4 It is a schematic diagram of the third-dimensional structure of the automobile suspension system and the upper alloy control arm and the lower alloy control arm in cooperation with each other from a second perspective; Figure 5 This is an enlarged three-dimensional structural diagram of the upper alloy control arm; Figure 6 It is an enlarged three-dimensional structural diagram of the lower alloy control arm; Figure 7 A schematic diagram of the first-person perspective structure of the transport and inspection agencies; Figure 8 A schematic diagram of the third perspective structure of the transport mechanism and the inspection mechanism; Fig. 9 A schematic diagram of the three-dimensional structure of the detection mechanism in cooperation with the first-person perspective; Fig.10 It is a schematic diagram of the three-dimensional structure of the detection mechanism in cooperation with the second viewing angle; Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the detection mechanism; Fig.12 for Fig.11 A in the middle is an enlarged schematic diagram of the three-dimensional structure; Fig.13 It is a schematic diagram of the enlarged structure of the arc frame, V-shaped plate and tie rod; Fig.14 It is a schematic diagram of the enlarged three-dimensional structure of the arc frame and the conical head; Fig.15 It is an enlarged three-dimensional structural diagram of the elastic frame and the upper alloy control arm; Fig.16 It is an enlarged three-dimensional structural diagram of the elastic frame and the lower alloy control arm; Fig.17 This is an enlarged three-dimensional structural diagram of the elastic frame.

[0019] Reference numerals: 1. Driving mechanism; 2. Eddy current probe; 3. Transport mechanism; 4. Mounting seat; 5. Limiting cylinder; 501. Adjusting plate; 502. Inserting rod; 6. Turning rod; 601. Handle; 602. Turntable; 603. Adjusting hole; 604. Elastic block; 605. Adapter head; 606. Pull ring; 7. Arc frame; 701. Conical head; 8. V-shaped piece; 9. Pull rod; 901. Pull head; 902. Adjusting groove; 10. Elastic frame; 11. Bending part; 12. First positioning strip; 13. Second positioning strip; 14. Arc 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.

[0020] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0021] The following is a detailed description of an eddy current flaw detection device for an automobile alloy control arm provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0022] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0023] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0024] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0025] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0026] like Figures 1 to 6 As shown, an embodiment of the present invention provides an eddy current flaw detection device for an automobile alloy control arm, comprising a driving mechanism 1 and a transport mechanism 3, wherein an eddy current probe 2 is installed on the driving mechanism 1, and the driving mechanism 1 is used to drive the eddy current probe 2 to move, an upper alloy control arm 15 and a lower alloy control arm 18 are both placed on the transport mechanism 3, and the transport mechanism 3 is used to transport the upper alloy control arm 15 and the lower alloy control arm 18 to a detection station, and a mounting seat 4 is symmetrically installed on the transport mechanism 3; a detection mechanism, which is used to assist a user in detecting defects on the upper alloy control arm 15 and the lower alloy control arm 18, and the detection mechanism is connected to the mounting seat 4. The detection device provided by the present application is mainly used for detecting defects of automobile alloy control arms, wherein an operator places the automobile 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 a detection station through a transport assembly. 8 is transported to the inspection station. At this time, the operator uses the inspection mechanism to fix the upper alloy control arm 15 and the lower alloy control arm 18 on the transportation mechanism 3. After the upper alloy control arm 15 and the lower alloy control arm 18 are fixed, the driving mechanism 1 is started. The eddy current probe 2 is installed on the driving mechanism 1. The driving mechanism 1 will automatically move the eddy current probe 2 to the position of the inspection mechanism, and then use the eddy current probe 2 to detect defects on the upper alloy control arm 15 and the lower alloy control arm 18. Using the eddy current probe 2 to inspect the alloy control arm can accurately identify tiny damages that are difficult to observe with the naked eye and cannot be identified by optical equipment, thereby improving the accuracy of detection. In addition, the inspection mechanism can flip the automobile alloy control arm to ensure that the eddy current probe 2 can perform all-round detection on the automobile alloy control arm, further improving the accuracy of defect detection of the automobile alloy control arm.

[0027] In this embodiment, if Figures 1 to 6 As shown, the upper alloy control arm 15 and the lower alloy control arm 18 are symmetrically mounted with a connecting portion 16 at one end, and the other ends of the upper alloy control arm 15 and the lower alloy control arm 18 are respectively provided with a first mounting hole 17 and a second mounting hole 19, and the lower alloy control arm 18 is provided with a hollow portion 20. Figures 3 to 6It can be understood that the structural state of the upper alloy control arm 15 and the lower alloy control arm 18 during actual use, wherein the connecting portion 16 on the upper alloy control arm 15 and the lower alloy control arm 18 is a cylindrical structure, and the connecting portion 16 is connected to other components by means of bolts, and 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 are also used for connection and fixation with other components, and the hollow portion 20 on the lower alloy control arm 18 is provided 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 the present application detects and processes the upper alloy control arm 15 and the lower alloy control arm 18 based on their structural characteristics, and the structural setting of the detection mechanism can be adapted to the structure of the upper alloy control arm 15 and the lower alloy control arm 18, which improves the detection efficiency of the upper alloy control arm 15 and the lower alloy control arm 18 on the one hand, and improves the detection accuracy on the other hand.

[0028] As an implementation method in this embodiment, Figures 7 to 14 As shown, the detection mechanism includes a limit cylinder 5, a rotating rod 6, an arc 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 transport mechanism 3, and the elastic frame 10 is fixedly connected to the mounting seat 4 on the other side of the transport mechanism 3. The rotating rod 6 is rotatably connected in the limit cylinder 5, the arc frame 7 is fixedly connected to one end of the rotating rod 6, one end of the V-shaped piece 8 is sleeved on the arc frame 7 and the other end is fixed to the pull rod 9, and the pull rod 9 is slidably inserted in the limit cylinder. The limit cylinder 5 is in the position cylinder 5, one end of the rotating rod 6 is fixedly connected to the handle 601, the other end of the rotating rod 6 is fixedly connected to the rotating disk 602, the top of the limit cylinder 5 is fixedly connected to the adjusting plate 501, the rotating disk 602 and the adjusting plate 501 are provided with adjusting holes 603, the adjusting plate 501 is plugged with the plug rod 502, and the detection mechanism is respectively fixed on the mounting seats 4 on both sides of the transport mechanism 3, wherein the limit cylinder 5, the rotating rod 6, the arc frame 7, the V-shaped piece 8 and the pull rod 9 are all installed on the same On the mounting seat 4 on the side, the rotating rod 6 can rotate in the limiting cylinder 5, and the rotating disk 602 is evenly provided with adjustment holes 603. The adjusting plate 501 at the top of the limiting cylinder 5 is provided with an adjustment hole 603 of the same size as that on the rotating disk 602. The user can rotate the rotating rod 6 by rotating the handle 601, or can fix the rotating rod 6 by simultaneously inserting the insertion rod 502 into the same adjustment hole 603 on the adjustment plate 501 and the rotating disk 602. The rotating disk 602 and the adjusting plate 501 are provided with adjustment holes 603 of different heights and staggered with each other. Such a setting is to improve the accuracy of the angle adjustment of the rotating rod 6, thereby ensuring the accuracy of the flipping 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 perform defect detection on the upper alloy control arm 15 and the lower alloy control arm 18 from different angles, thereby improving the detection accuracy.

[0029] In this embodiment, if Figures 7 to 14 As shown, one end of the arc frame 7 is fixedly connected to the outer wall of the rotating disk 602, and the other end of the arc frame 7 is fixedly connected to a conical head 701. The overall profile of the arc frame 7 is a circular arc profile protruding outward. One end of the conical head 701 is fixed to the arc frame 7, and the other end of the conical head 701 is a conical structure concave toward the middle. The end of the conical head 701 is a segmented structure. The arc frame 7 is mainly used to fix the connecting portion 16 on the upper alloy control arm 15 and the lower alloy control arm 18. Since the overall profile of the arc frame 7 is a circular arc profile protruding outward, one end of the conical head 701 is fixed to the arc frame 7, and the other end of the conical head 701 is a conical structure concave toward the middle. The end of the conical head 701 is a segmented structure. The arc frame 7 is mainly used to fix the connecting portion 16 on the upper alloy control arm 15 and the lower alloy control arm 18. The arc-shaped profile of the outer protrusion, so the setting of its arc structure makes the arc frame 7 have an elastic force to expand outward. The user allows the conical heads 701 on the two arc frames 7 to be inserted 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 conical heads 701 in the connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18 with the elastic force of the arc frame 7, thereby achieving the fixing effect of the upper alloy control arm 15 and the lower alloy control arm 18. Here, the conical heads 701 and The arc frame 7 is an integrated structural setting, which can reduce the manufacturing process of the two and is more convenient for production. 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 inwardly recessed contour, but also can be squeezed, deformed and shrunk. When the user inserts the conical head 701 into the connecting part 16, first, it can use its conical structure recessed toward the middle for auxiliary guidance. Moreover, during the continuous insertion process, the segmented conical head 701 will deform and shrink during the extrusion of the connecting part 16. During the contraction of the conical head 701, the inner wall of the connecting part 16 will be squeezed, thereby fixing the connecting part 16 with the help of the extrusion force. Such a fixing method not only does not cause any obstruction to the structure of the upper alloy control arm 15 and the lower alloy control arm 18, but is also simple and convenient during actual operation, thereby effectively improving the efficiency and accuracy of defect detection of the upper alloy control arm 15 and the lower alloy control arm 18.

[0030] In this embodiment, if 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.

[0031] In summary, the arc frame 7, the V-shaped piece 8 and the upper pull rod 9 can achieve the fixing effect of the upper alloy control arm 15 and the lower alloy control arm 18, and the user can release the fixing effect of the upper alloy control arm 15 and the lower alloy control arm 18 by pulling the pull rod 9 outward. When the user pulls the pull rod 9 outward, the elastic block 604 will automatically lock the pull rod 9 to prevent the user from letting go and the pull rod 9 automatically retracting. At the same time, it is also convenient for the user to control the extension and contraction amount of the pull rod 9. Using this method to fix the upper alloy control arm 15 and the lower alloy control arm 18 is not only efficient, but also easy to operate. , and the operation is simple. After the upper alloy control arm 15 and the lower alloy control arm 18 are fixed, 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 perform defect detection on the upper alloy control arm 15 and the lower alloy control arm 18 without blind spots, thereby improving the accuracy of detection. When the upper alloy control arm 15 and the lower alloy control arm 18 are fixed by adopting the above structure, no obstruction will be caused to the structures of the two, and there is no need to repeatedly disassemble and assemble during the flipping process, thereby improving the efficiency of defect detection and the accuracy of detection.

[0032] In this embodiment, if Figures 1 to 9 and Figures 15 to 17 As shown, one end of the elastic frame 10 is fixedly connected to a second positioning bar 13, and a first positioning bar 12 is fixedly connected to the outer wall of one end of the elastic frame 10 close to the second positioning bar 13. The number of the first positioning bar 12 and the second positioning bar 13 is two, and the first positioning bar 12 and the second positioning bar 13 both have an arc-shaped contour protruding outward, and the first positioning bar 12 and the second positioning bar 13 are fixedly connected to an arc bar 14 at one end away from the elastic frame 10, and a bending portion 11 is provided at the middle position of the elastic frame 10, and a lightweight groove is opened on the elastic frame 10. The elastic frame 10 is a curved elastic structure. As mentioned above, the conical head 701 can fix the connecting portion 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 Fig. 9 In the state shown in the figure, the pressure borne by the connecting portion 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, an elastic frame 10 is provided to support and fix 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.

[0033] Specifically, the elastic frame 10 is installed on the mounting seat 4 on the side opposite to the arc 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 easily deformed by force at the position of the bending portion 11. This arrangement 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 used to position the first mounting hole 17 and the second mounting hole 19, respectively. Since the first positioning strip 12 and the second positioning strip 13 both have an arc-shaped profile protruding outward, the first positioning strip 12 and the second positioning strip 13 are respectively used to position the first mounting hole 17 and the second mounting hole 19. The bars 13 have outward elastic force. The user can first press the ends of the first positioning bar 12 and the second positioning bar 13 to make them shrink and deform, and then let the first positioning bar 12 and the second positioning bar 13 pass through the first mounting hole 17 and the second mounting hole 19. After the user lets go, the first positioning bar 12 and the second positioning bar 13 will automatically recover and resist and snap onto the inner walls of the first mounting hole 17 and the second mounting hole 19 under the action of the elastic force. When the first positioning bar 12 and the second positioning bar 13 are snapped into the first mounting hole 17 and the second mounting hole 19, the positioning effect of the positioning bars and the supporting effect of the elastic frame 10 can achieve the supporting and fixing effect of the upper alloy control arm 15 and the lower alloy control arm 18, thereby improving the stability of the two during the detection process and improving the accuracy of the detection.

[0034] Furthermore, due to the difference in the size of the upper alloy control arm 15 and the lower alloy control arm 18, when the upper alloy control arm 15 is supported and fixed by the elastic frame 10, the second positioning bar 13 is in an idle state (eg Fig.15 As shown), at this time, the second positioning bar 13 does not cause any shielding or interference to the structure of the upper alloy control arm 15, and thus does not affect the eddy current probe 2 in performing defect detection 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 bar 13 can position and support the second mounting hole 19, and the first positioning bar 12 is inserted into the hollow portion 20 to position and support the hollow portion 20 (as shown). Fig.16 As shown), in the above scheme, when the first positioning bar 12 and the second positioning bar 13 support and position the upper alloy control arm 15 and the lower alloy control arm 18, they support from the bottom and the inside of the upper alloy control arm 15 and the lower alloy control arm 18, and will not cause any obstruction to the top of the two, so it will not affect the eddy current probe 2 to perform defect detection on the upper alloy control arm 15 and the lower alloy control arm 18.

[0035] The working principle of the technical solution provided by the present invention is as follows: During use, the operator places the automobile alloy control arm to be tested on the transport mechanism 3, and then transports the upper alloy control arm 15 and the lower alloy control arm 18 to the testing station via the transport assembly. At this time, the user first inserts the conical heads 701 on the two arc 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 conical heads 701 in the connecting parts 16 on the upper alloy control arm 15 and the lower alloy control arm 18 with the help of the elastic force of the arc frame 7, thereby achieving the fixing effect of the upper alloy control arm 15 and the lower alloy control arm 18. One end of the conical structure 701 is concave toward the middle and the end is a segmented structure. Such a structural setting makes the conical head 701 not only have an inwardly concave profile, but also can be squeezed, deformed and shrunk. When the user inserts the conical head 701 into the connecting portion 16, the conical structure concave toward the middle can be used for auxiliary guidance. In addition, during the continuous insertion process, the segmented conical head 701 will be deformed and shrunk during the squeezing process of the connecting portion 16. During the contraction process of the conical head 701, the inner wall of the connecting portion 16 will be squeezed, thereby squeezing the connecting portion 16 with the squeezing force. 6 is fixed, and after the upper alloy control arm 15 and the lower alloy control arm 18 are fixed, the driving mechanism 1 is started. The eddy current probe 2 is installed on the driving mechanism 1, and the driving mechanism 1 automatically moves the eddy current probe 2 to the position of the detection mechanism, and then uses the eddy current probe 2 to detect defects on the upper alloy control arm 15 and the lower alloy control arm 18. The use of 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 equipment, thereby improving the accuracy of detection. The user can rotate the rotating rod 6 by rotating the handle 601, or by turning the insert rod 5 02 is simultaneously inserted into the same adjustment hole 603 on the adjustment plate 501 and the turntable 602 to achieve the fixing effect of the rotating rod 6. The turntable 602 and the adjustment plate 501 are provided with adjustment holes 603 of different heights and staggered with each other. This arrangement is to improve the accuracy of the angle adjustment of the rotating rod 6, thereby ensuring the accuracy of the flip 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 perform defect detection on the upper alloy control arm 15 and the lower alloy control arm 18 from different angles, thereby improving the detection accuracy.

[0036] 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 bar 12 and the second positioning bar 13 installed on the elastic frame 10 are used to position the first mounting hole 17 and the second mounting hole 19 respectively. Since the first positioning bar 12 and the second positioning bar 13 both have an arc-shaped profile protruding outward, the first positioning bar 12 and the second positioning bar 13 both have an outward elastic force. The user can first press the ends of the first positioning bar 12 and the second positioning bar 13 to allow the two The user contracts and deforms, and then allows the first positioning bar 12 and the second positioning bar 13 to pass through the first mounting hole 17 and the second mounting hole 19. After the user lets go, the first positioning bar 12 and the second positioning bar 13 will automatically recover and deform under the action of elastic force and contact and snap onto the inner walls of the first mounting hole 17 and the second mounting hole 19. When the first positioning bar 12 and the second positioning bar 13 are snapped into the first mounting hole 17 and the second mounting hole 19, the upper alloy control arm 15 and the lower alloy control arm 18 can be supported and fixed by means of the positioning effect of the positioning bar and the supporting effect of the elastic frame 10, thereby improving the stability of the two during the detection process and improving the accuracy of the detection.

[0037] 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.

[0038] 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.

[0039] 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 automobile alloy control arm, comprising a driving mechanism and a transport mechanism, characterized in that: The driving mechanism is provided with an eddy current probe, 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 transport mechanism, and the transport mechanism is used to transport the upper alloy control arm and the lower alloy control arm to the inspection station. The transport mechanism is symmetrically provided with mounting seats. A detection mechanism, the detection mechanism is used to assist a user in detecting defects on the upper alloy control arm and the lower alloy control arm, the detection mechanism is connected to the mounting seat; The detection mechanism includes a limiting cylinder, a rotating rod, an arc frame, a V-shaped plate, a pull rod and an elastic frame. The limiting cylinder is fixedly connected to a mounting seat on one side of the transport mechanism, and the elastic frame is fixedly connected to a mounting seat on the other side of the transport mechanism. The rotating rod is rotatably connected in the limiting cylinder, the arc frame is fixedly connected to one end of the rotating rod, one end of the V-shaped plate is sleeved on the arc frame and the other end is fixed to the pull rod, and the pull rod is slidably inserted in the limiting cylinder.

2. The eddy current flaw detection device for automobile alloy control arm according to claim 1 is characterized in that: One end of the rotating rod is fixedly connected to a handle, the other end of the rotating rod is fixedly connected to a rotating disk, the top of the limiting cylinder is fixedly connected to an adjusting plate, the rotating disk and the adjusting plate are both provided with adjusting holes, and the adjusting plate is plugged with an insert rod.

3. The eddy current flaw detection device for automobile alloy control arm according to claim 2 is characterized in that: One end of the arc frame is fixedly connected to the outer wall of the turntable, and the other end of the arc frame is fixedly connected to a conical head. The overall contour of the arc frame is an outwardly protruding arc contour.

4. The eddy current flaw detection device for automobile alloy control arm according to claim 3 is characterized in that: One end of the conical head is fixed to the arc frame, the other end of the conical head is a conical structure recessed toward the middle, and the end of the conical head is a segmented structure.

5. The eddy current flaw detection device for automobile alloy control arm according to claim 1, characterized in that: The overall contour of the V-shaped piece is a "V" shape, and a pull head is fixedly connected to one end of the pull rod away from the V-shaped piece, and an adjustment groove is provided on the outer wall of the pull rod near the end of the pull head.

6. The eddy current flaw detection device for automobile alloy control arm according to claim 5, characterized in that: An elastic block is fixedly connected to one end of the rotating rod close to the pulling head, one end of the elastic 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 matched with the contour of the adjusting groove, a pull ring is fixedly connected to the outer wall of the elastic block, and a weakened groove recessed toward the middle is opened at the middle position of the inner wall of the elastic block.

7. The eddy current flaw detection device for automobile alloy control arm according to claim 1, characterized in that: One end of the elastic frame is fixedly connected to a second positioning strip, and an outer wall of one end of the elastic frame close to the second positioning strip is fixedly connected to a first positioning strip, and the number of the first positioning strip and the number of the second positioning strip are both two.

8. The eddy current flaw detection device for automobile alloy control arm according to claim 7, characterized in that: The first positioning bar and the second positioning bar both have an arc-shaped contour protruding outwards, and one end of the first positioning bar and the second positioning bar away from the elastic frame is fixedly connected to an arc-shaped bar.

9. The eddy current flaw detection device for automobile alloy control arm according to claim 7, characterized in that: A bending portion is arranged at the middle position of the elastic frame, a lightweight groove is opened on the elastic frame, and the elastic frame is a curved elastic structure.

10. The eddy current flaw detection device for automobile alloy control arm according to claim 1, characterized in that: The upper alloy control arm and the lower alloy control arm are both symmetrically provided with connecting parts at one end, the other ends of the upper alloy control arm and the lower alloy control arm are respectively provided with a first mounting hole and a second mounting hole, and the lower alloy control arm is provided with a hollow part.

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