An automobile beam frame nondestructive flaw detection device and detection method

Abstract

The present application relates to the development and detection technology field of automobile beam frame material, and proposes a kind of automobile beam frame nondestructive flaw detection device and detection method, for the fluorescent penetrant inspection of automobile beam frame made of new material, including flaw detection box, penetrant storage tank, nozzle, movable cover and hoisting clamp;When the hoisting clamp clamps workpiece and moves to the top in the flaw detection box, the movable cover blocks the opening on the top side of the penetrant storage tank.The present application sets up penetrant storage tank and nozzle in flaw detection box, and realizes cleaning, penetration, cleaning and color developing process in workpiece flaw detection by using one lifting movement of workpiece, not only reduces the occupied space of the present flaw detection device, but also improves the detection efficiency of workpiece, by setting movable cover, the independence of each process in workpiece flaw detection can be improved by selectively blocking the opening on the top side of penetrant storage tank, and the detection quality of workpiece is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of automotive beam material research and development and testing technology, and in particular to a non-destructive testing device and testing method for automotive beams. Background Technology

[0002] The vehicle frame is an important component of a vehicle. During the vehicle development process, especially for new energy vehicles, new lightweight materials such as aluminum alloy and carbon fiber are used to replace traditional steel in order to effectively reduce vehicle weight. However, vehicle frames made of new materials are prone to unpredictable damage and defects. In order to ensure its processing quality, non-destructive testing equipment is needed to inspect the developed vehicle frame.

[0003] Utility model patent application CN210071689U discloses a penetrant testing machine, comprising a frame with a worktable, a movable assembly slidingly mounted on the worktable, four working pools for penetrant testing, cleaning, development, and observation respectively, and a lifting assembly within the working pools for driving the parts up and down. The worktable has four discharge holes communicating with the openings of the four working pools respectively. The movable assembly includes two opposing movable plates, two movable cylinders respectively mounted on the two movable plates, and a closing plate hinged to each of the two movable plates. One end of the closing plate is hinged to the piston rod of the movable cylinder, forming a channel between the two movable plates for the parts to pass through. When the two closing plates are horizontal, the channel is closed. This machine features high automation, low operator workload, and high testing efficiency.

[0004] In the above technical solution, in order to achieve penetrant testing of the workpiece, four working pools are set up for penetrant testing, cleaning, development and observation respectively, so that the workpiece is operated through the four working pools in sequence. However, this penetrant testing machine occupies a large space and the operation steps are cumbersome, which is not conducive to improving the inspection efficiency of automobile beams. Summary of the Invention

[0005] In view of this, the present invention proposes a non-destructive testing device and testing method for automobile beams, which can reduce the space occupied by the non-destructive testing device and improve its space utilization.

[0006] The technical solution of this invention is implemented as follows: On one hand, this invention provides a non-destructive testing device for automotive beam frames, used for fluorescent penetrant testing of workpieces, comprising a testing chamber, a penetrant storage tank, a nozzle, a movable cover, and a lifting fixture, wherein...

[0007] The penetrant storage tank is fixedly installed below the flaw detection box, and the side walls of the two are spaced apart. Both the penetrant storage tank and the flaw detection box have openings on their top sides.

[0008] The nozzle is fixedly installed above the flaw detection box and is used to remove penetrant and stains from the surface of the workpiece or to spray color developer onto the surface of the workpiece.

[0009] The movable cover is movably positioned in the middle inside the flaw detection box;

[0010] When the lifting fixture moves the workpiece to the top of the flaw detection chamber, the movable cover seals the opening on the top side of the penetrant storage tank to perform the cleaning, rinsing, color development, and observation processes for penetrant testing of the workpiece; when the lifting fixture moves the workpiece to the bottom of the flaw detection chamber, the movable cover does not seal the opening on the top side of the penetrant storage tank to move the workpiece into the penetrant testing agent to perform the penetrant testing process for the workpiece.

[0011] Based on the above technical solutions, preferably, the movable cover includes two cover plates, rollers, and two guide rails, wherein,

[0012] The two covers are symmetrically arranged about the centerline of the penetrant storage tank;

[0013] The rollers are rotatably mounted on the cover plate, and two rollers are arranged opposite each other on each end of the cover plate;

[0014] The guide rail is fixedly installed inside the flaw detection box, and the roller is rolled inside the guide rail. The two guide rails are symmetrically arranged about the center line of the penetrant storage box, and the two rollers located at the same end of the cover plate are connected to the same guide rail.

[0015] More preferably, the guide rail has a gantry-shaped structure, and the middle position of the guide rail is high in the middle and low on both sides;

[0016] When the movable cover does not block the opening on the top side of the penetrant storage tank, the two cover plates are located on both sides of the penetrant storage tank respectively; when the movable cover blocks the opening on the top side of the penetrant storage tank, the cover plate is inclined, and the end of the cover plate closer to the other cover plate is higher than the end of the cover plate farther from the other cover plate.

[0017] More preferably, it also includes a telescopic rod, which is fixedly mounted on the lifting clamp;

[0018] The movable cover also includes an elastic element, which is disposed on the cover plate;

[0019] When the telescopic rod abuts against the elastic element, it moves the cover plate to the side of the penetrant storage tank; when the telescopic rod does not abut against the elastic element, the cover plate moves above the penetrant storage tank.

[0020] More preferably, the elastic element includes a sliding shaft, a sliding plate, a tension spring, and a connecting rod, wherein,

[0021] The sliding shaft is fixedly installed inside the flaw detection box;

[0022] The sliding plate is slidably mounted on the sliding shaft;

[0023] The tension spring is fixedly mounted on the sliding shaft, and one end of it is fixedly mounted on the top side of the sliding plate.

[0024] The two ends of the connecting rod are respectively rotatably mounted on the cover plate and the sliding plate.

[0025] More preferably, the telescopic rod includes a sleeve, a support rod, and a spring, wherein,

[0026] The upper end of the sleeve is fixedly mounted on the lifting clamp;

[0027] The support rod is slidably disposed within the sleeve;

[0028] One end of the spring is fixedly installed inside the sleeve, and the other end abuts against the top side of the support rod.

[0029] Based on the above technical solutions, preferably, the lifting fixture includes a mounting plate, a workpiece rack, and a fixing rod, wherein,

[0030] The mounting plate is used to connect to the lifting equipment;

[0031] The workpiece holder is located below the mounting plate;

[0032] The fixing rod is fixedly installed between the mounting plate and the workpiece holder.

[0033] More preferably, the workpiece holder has a drainage hole in the middle;

[0034] The lifting clamp also includes two water distribution plates and two counterweights, wherein...

[0035] The water distribution plate is rotatably disposed in the middle position inside the water leakage hole, and the two water distribution plates are symmetrically arranged about the center line of the water leakage hole;

[0036] The counterweight is fixedly installed on the bottom side of the water distribution plate at one end away from the center line of the leakage hole.

[0037] More preferably, the water distribution plate includes a first rotating rod, a second rotating rod, a water receiving plate, and a water guiding plate, wherein,

[0038] The middle position of the first rotating rod is rotatably positioned inside the water leakage hole;

[0039] One end of the second rotating rod is rotatably disposed inside the drain hole and is parallel to the first rotating rod;

[0040] The water receiving plate is rotatably disposed between the first rotating rod and the second rotating rod, and is parallel to the workpiece frame;

[0041] The water guide plate is fixedly installed at the end of the first rotating rod away from the water receiving plate and is sealed and abutted against the water receiving plate. The counterweight is fixedly installed on the bottom side of the water guide plate.

[0042] Secondly, the present invention provides a non-destructive testing method for automobile beams, using the aforementioned non-destructive testing device for automobile beams, comprising the following steps:

[0043] S1, fix the lifting clamp on the lifting equipment and fix the workpiece on the lifting clamp;

[0044] S2, using the lifting device to move the workpiece to the top of the flaw detection box, and turning on the nozzle to clean the workpiece and remove the stains on the surface of the workpiece;

[0045] S3, the lifting device is used to move the workpiece to the penetrant storage tank for penetrant testing;

[0046] S4, using the lifting device to move the workpiece above the penetrant storage tank, and opening the nozzle to remove the penetrant from the surface of the workpiece;

[0047] S5. Take out the workpiece, spray a color developer, observe the color of the workpiece surface, and determine whether the workpiece has defects.

[0048] The non-destructive testing device and method for automobile beams of the present invention have the following advantages over the prior art:

[0049] By placing the penetrant storage tank and nozzle inside the flaw detection chamber, the cleaning, penetrant, washing, and color development processes in flaw detection can be achieved with a single lifting and lowering movement of the workpiece. This not only reduces the space occupied by the flaw detection device but also shortens the workpiece's travel distance and improves the workpiece's detection efficiency. By setting a movable cover, the selective sealing of the top opening of the penetrant storage tank can enhance the independence of each process in flaw detection, prevent cross-contamination of the penetrant, color developer, and cleaning water, and ensure the quality of workpiece detection.

[0050] By incorporating an elastic element, the cover plate can naturally seal the opening on the top side of the penetrant storage tank, providing real-time protection for the penetrant inside. A telescopic rod is installed on the lifting fixture, and its bottom end engages with the elastic element. When the workpiece moves to the bottom of the flaw detection tank, the cover plate automatically moves to the side of the penetrant storage tank, achieving linkage between the lifting fixture and the movable cover plate, thus improving the ease of operation of this flaw detection device. Furthermore, by making the telescopic rod adjustable in length, its extension and retraction allow the bottom end of the telescopic rod to align with the bottom of the lifting fixture when the workpiece moves to the bottom of the penetrant storage tank, further reducing the volume of the flaw detection tank.

[0051] By setting up a water distribution plate and a counterweight, the pressure of the counterweight on the water distribution plate allows it to tilt naturally, causing one end of the water distribution plate to tilt up and press against the workpiece on the workpiece rack. This facilitates the loss of moisture from the workpiece, accelerating the drying efficiency and flaw detection efficiency of the workpiece. By setting the water distribution plate to include a first rotating rod, a second rotating rod, a water receiving plate, and a water guiding plate, the water receiving plate can always be parallel to the workpiece rack, making the water distribution plate adaptable to the flat bottom of the automobile beam frame. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a perspective view of a non-destructive testing device for automobile beams according to the present invention;

[0054] Figure 2 This is a cross-sectional view of a non-destructive testing device for automobile beams according to the present invention, with the top opening of the penetrant storage tank sealed by a movable cover.

[0055] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0056] Figure 4 This is a cross-sectional view of a non-destructive testing device for automobile beams according to the present invention, with the movable cover not sealing the top opening of the penetrant storage tank;

[0057] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0058] Figure 6 This is a perspective view of the guide rail in a non-destructive testing device for automobile beams according to the present invention.

[0059] Figure 7 This is a perspective view of the roller in a non-destructive testing device for automobile beams according to the present invention.

[0060] Figure 8 This is a perspective view of the cover plate in different states in a non-destructive testing device for automobile beams according to the present invention.

[0061] Figure 9 This is a perspective view of the elastic element in a non-destructive testing device for automobile beams according to the present invention.

[0062] Figure 10 This is a cross-sectional view of the telescopic rod in a non-destructive testing device for automobile beams according to the present invention.

[0063] Figure 11 This is a perspective view of the lifting fixture in a non-destructive testing device for automobile beams according to the present invention;

[0064] Figure 12 This is a perspective view of the water distribution plate in a non-destructive testing device for automobile beams according to the present invention.

[0065] The components include: 1. Flaw detection box; 2. Penetrant storage box; 3. Nozzle; 4. Movable cover; 41. Cover plate; 42. Roller; 43. Guide rail; 44. Elastic component; 441. Sliding shaft; 442. Sliding plate; 443. Tension spring; 444. Connecting rod; 5. Lifting fixture; 51. Mounting plate; 52. Workpiece rack; 53. Fixing rod; 54. Water distribution plate; 541. First rotating rod; 542. Second rotating rod; 543. Water receiving plate; 544. Water guide plate; 55. Counterweight; 501. Leakage hole; 6. Telescopic rod; 61. Sleeve; 62. Support rod; 63. Spring. Detailed Implementation

[0066] The technical solutions of this invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0067] like Figure 1-12 As shown, the present invention provides a non-destructive testing device for automobile beams, comprising a testing box 1, a penetrant storage box 2, a nozzle 3, a movable cover 4, a lifting fixture 5, and a telescopic rod 6, for performing fluorescent penetrant testing on automobile beams (hereinafter referred to as workpieces) processed using new materials.

[0068] The penetrant testing operation of a workpiece typically includes steps such as cleaning, penetrant testing, rinsing, color development, and observation. The top side of the testing chamber 1 is provided with an opening to provide an environment for the cleaning, penetrant testing, rinsing, color development, and observation processes of the workpiece. The lifting fixture 5 is used to hold the workpiece and move it to allow the workpiece to be transferred between different process positions.

[0069] The penetrant storage tank 2 is used to store penetrant testing agent. The penetrant storage tank 2 is fixedly installed below the flaw detection chamber 1. The top side of the penetrant storage tank 2 has an opening, and its sidewall is spaced apart from the sidewall of the flaw detection chamber 1. The nozzle 3 is used to spray cleaning water to remove penetrant testing agent and stains from the workpiece surface. The nozzle 3 is fixedly installed above the flaw detection chamber 1. When the workpiece moves to the upper part of the flaw detection chamber 1, the cleaning water sprayed from the nozzle 3 can clean and remove stains or penetrant testing agent from the workpiece surface. The used cleaning water can be stored between the penetrant storage tank 2 and the flaw detection chamber 1. When the workpiece moves to the lower part of the flaw detection chamber 1, it can... The workpiece is immersed in the penetrant in the penetrant storage tank 2 to perform the penetrant process. Multiple nozzles 3 can be set, with one nozzle 3 used to spray the color developer onto the surface of the workpiece, so that the color development and observation operations can also be carried out in the flaw detection chamber 1. With this structural design, the cleaning, penetrant, washing, color development and observation processes of the workpiece penetrant flaw detection can all be carried out in the flaw detection chamber 1, reducing the space occupied by this flaw detection device. At the same time, by using a single lifting and lowering movement of the workpiece, each process in the workpiece flaw detection can be realized without moving and lifting the workpiece to different process positions, which also improves the flaw detection efficiency of the workpiece.

[0070] During the cleaning, rinsing, and color development processes of the workpiece, cleaning water or color developer can easily splash into the penetrant storage tank 2, affecting the normal use of the penetrant. Therefore, the movable cover 4 is movably positioned in the middle of the flaw detection chamber 1. Figure 2 As shown, when the lifting clamp 5 moves the workpiece outside the flaw detection box 1, or when the lifting clamp 5 moves the workpiece to the top of the flaw detection box 1, the movable cover 4 seals the opening on the top side of the penetrant storage tank 2 to allow for the cleaning, rinsing, color development, and observation processes of the workpiece during penetrant testing, preventing cleaning water or color developer from dripping into the penetrant storage tank 2; Figure 4 As shown, when the lifting fixture 5 clamps the workpiece and moves it to the lower part of the flaw detection box 1, the movable cover 4 does not block the opening on the top side of the penetrant storage box 2, so as to move the workpiece into the penetrant in the penetrant storage box 2 for the penetrant penetrant testing process; the movable cover 4 allows each process of the penetrant penetrant testing of the workpiece to remain relatively independent, which can significantly improve the flaw detection quality of the workpiece.

[0071] In a preferred embodiment, the movable cover 4 is configured to include two cover plates 41, rollers 42, two guide rails 43, and an elastic element 44. The two cover plates 41 are symmetrically arranged about the center line of the penetrant storage tank 2. The rollers 42 are rotatably mounted on the cover plates 41, and two rollers 42 are arranged opposite each other on each end of the cover plates 41. The guide rails 43 are fixedly mounted inside the flaw detection box 1, and the rollers 42 are rolled within the guide rails 43. The two guide rails 43 are symmetrically arranged about the center line of the penetrant storage tank 2, and the two rollers 42 located at the same end of the cover plates 41 are connected to the same guide rail 43. Figures 2-8 As shown, by using the guide rail 43 to guide the roller 42, the position of the roller 42 and the cover plate 41 can be adjusted, so that the cover plate 41 can selectively block the opening on the top side of the penetrant storage tank 2. By setting two guide rails 43, the cover plate 41 can be well supported, so that the cover plate 41 can slide smoothly.

[0072] like Figure 2 and Figure 3 As shown, when the movable cover 4 seals the opening on the top side of the penetrant storage tank 2, it is preferable to make the cover plate 41 tilted, so that the end of one cover plate 41 closer to another cover plate 41 is higher than the end of this cover plate 41 farther from the other cover plate 41, thereby allowing cleaning water to flow to both sides and preventing water accumulation on the top side of the cover plate 41; Figure 4 and Figure 5 As shown, when the movable cover 4 does not block the opening on the top side of the penetrant storage tank 2, it is preferable to place the two cover plates 41 on the two sides of the penetrant storage tank 2 respectively, thereby reducing the space occupied by the cover plate 41 and avoiding interference between the cover plate 41 and the lifting clamp 5; for the above technical effect, the guide rail 43 is set as a gantry-shaped structure, and the middle position of the guide rail 43 is a roof-shaped structure with the middle being high and the two sides being low.

[0073] The elastic element 44 is used to automatically reset the cover plate 41. The elastic element 44 is elastic and is disposed on the cover plate 41. In its natural state, the cover plate 41 is positioned above the penetrant storage tank 2 and its top opening is blocked by the elastic element 44. When the elastic element 44 is resisted, the cover plate 41 is moved away from the top opening of the penetrant storage tank 2.

[0074] The telescopic rod 6 is used to link the lifting clamp 5 and the movable cover 4. The telescopic rod 6 is fixedly installed on the lifting clamp 5 and can hold the elastic element 44. When the telescopic rod 6 holds the elastic element 44, it drives the cover plate 41 to move to the side of the penetrant storage tank 2. When the telescopic rod 6 does not hold the elastic element 44, the cover plate 41 moves to the top of the penetrant storage tank 2. That is, through the cooperation of the telescopic rod 6 and the elastic element 44, the cover plate 41 can automatically move to the corresponding position, thereby accelerating the flaw detection efficiency of the workpiece.

[0075] like Figure 9As shown, the elastic element 44 includes a sliding shaft 441, a sliding plate 442, a tension spring 443, and a connecting rod 444. The sliding shaft 441 is fixedly installed inside the flaw detection box 1; the sliding plate 442 is slidably installed on the sliding shaft 441; the tension spring 443 is fixedly installed on the sliding shaft 441, and one end of it is fixedly installed on the top side of the sliding plate 442; the two ends of the connecting rod 444 are respectively rotatably installed on the cover plate 41 and the sliding plate 442; in its natural state, the tension spring 443 pulls on the sliding plate 442, causing the sliding plate 442 to slide upward, thereby driving the connecting rod 444 and the lower end of the cover plate 41 to move upward, so as to... The cover plate 41 moves to the top side of the penetrant storage tank 2, sealing the opening on the top side of the penetrant storage tank 2. When the sliding plate 442 is pressed by the telescopic rod 6, it slides downward, causing the connecting rod 444 and the cover plate 41 to also move downward, allowing the cover plate 41 to move to the side of the penetrant storage tank 2, thus exposing the opening on the top side of the penetrant storage tank 2, allowing the workpiece to enter the penetrant storage tank 2. At the same time, the connecting rod 444 can compensate for the change in the distance between the cover plate 41 and the sliding plate 442, so that the movement of the sliding plate 442 can drive the cover plate 41 to move.

[0076] like Figure 2 and Figure 3 As shown, before the workpiece enters the penetrant storage tank 2, to avoid collision between the workpiece and the cover plate 41, the cover plate 41 should be moved to the side of the penetrant storage tank 2, that is, the bottom end of the telescopic rod 6 should be below the lifting clamp 5. Figure 4 and Figure 5 As shown, after the workpiece enters the penetrant storage tank 2, in order to reduce the space occupied by the device, it is preferable to make the bottom end of the telescopic rod 6 flush with the bottom side of the lifting clamp 5. In order to realize the position change of the bottom end of the telescopic rod 6 relative to the lifting clamp 5, the telescopic rod 6 needs to have a telescopic function.

[0077] Specifically, such as Figure 1 and Figure 10 As shown, the telescopic rod 6 includes a sleeve 61, a support rod 62, and a spring 63. The upper end of the sleeve 61 is fixedly mounted on the lifting clamp 5. The support rod 62 is slidably mounted inside the sleeve 61. One end of the spring 63 is fixedly mounted inside the sleeve 61, and the other end abuts against the top side of the support rod 62. The elastic force of the spring 63 is greater than that of the tension spring 443. When the support rod 62 abuts against the top side of the sliding plate 442, the tension spring 443 first extends, causing the sliding plate 442 to slide. After the sliding plate 442 moves to the lowest point, the spring 63 retracts, thereby causing the telescopic rod 6 to retract.

[0078] In one preferred embodiment, the lifting clamp 5 includes a mounting plate 51, a workpiece holder 52, and a fixing rod 53, such as Figure 11As shown, the mounting plate 51 is used to connect with the lifting equipment; the workpiece rack 52 is located below the mounting plate 51; the fixing rod 53 is fixedly installed between the mounting plate 51 and the workpiece rack 52; after the workpiece is fixedly installed on the workpiece rack 52, the workpiece can be moved by the drive of the lifting equipment; at the same time, the mounting plate 51, the workpiece rack 52 and the fixing rod 53 form a frame structure, which not only facilitates the installation and fixing of the workpiece, but also facilitates the contact of cleaning water and penetrant testing agent with the workpiece.

[0079] During the cleaning process, the cleaning water adhering to the surface of the workpiece cannot be drained immediately, but will drip down little by little. In order to accelerate the drying efficiency of the moisture on the workpiece surface, it is preferable to provide a drainage hole 501 in the middle of the workpiece frame 52, and to set two water distribution plates 54 and two counterweights 55 in the lifting fixture 5. The middle position of the water distribution plate 54 is rotatably set in the drainage hole 501, and the two water distribution plates 54 are symmetrically arranged about the center line of the drainage hole 501. The counterweights 55 are fixedly set at the bottom side of the water distribution plate 54 away from the center line of the drainage hole 501. In the natural state, the counterweights 55 drive the water distribution plate 54 to tilt, so that the end of the water distribution plate 54 away from the counterweights 55 touches the workpiece, and the moisture on the workpiece can flow along the water distribution plate 54 to both sides of the flaw detection box 1, which accelerates the drying efficiency of the workpiece surface. When the lifting fixture 5 moves into the penetrant storage box 2, the water distribution plate 54 can be rotated and hidden in the drainage hole 501 to avoid occupying a large space.

[0080] The bottom side of the automobile beam frame is usually relatively flat. To increase the contact area between the water distribution plate 54 and the bottom side of the automobile beam frame and accelerate the drying efficiency of the automobile beam frame, the water distribution plate 54 is configured to include a first rotating rod 541, a second rotating rod 542, a water receiving plate 543, and a water guide plate 544. The middle position of the first rotating rod 541 is rotatably disposed within the water leakage hole 501; one end of the second rotating rod 542 is rotatably disposed within the water leakage hole 501 and is parallel to the first rotating rod 541; the water receiving plate 543 is rotatably disposed between the first rotating rod 541 and the second rotating rod 542 and is parallel to the workpiece holder 52; the water guide plate 544 is fixedly disposed at the end of the first rotating rod 541 away from the water receiving plate 543 and is sealed against the water receiving plate 543; a counterweight 55 is fixedly disposed on the bottom side of the water guide plate 544. Figure 12 As shown, the workpiece holder 52, the first rotating rod 541, the second rotating rod 542, and the water receiving plate 543 form a parallelogram-shaped structure. No matter how the first rotating rod 541 rotates, the water receiving plate 543 is always parallel to the workpiece holder 52, so that the water receiving plate 543 can abut against the flat bottom side of the automobile beam frame, allowing the moisture on the workpiece surface to flow into the water receiving plate 543 as soon as possible, and then be discharged along the water guide plate 544 to both sides inside the flaw detection box 1.

[0081] The present invention provides a non-destructive testing method for automobile beams as follows:

[0082] S1, fix the lifting fixture 5 on the lifting equipment, and fix the workpiece 24 hours after processing on the lifting fixture 5. When fixing the workpiece, it is preferable to make the bottom side of the workpiece parallel to the water receiving plate 543.

[0083] S2, using the lifting equipment to move the workpiece to the top of the flaw detection box 1, and turn on the nozzle 3 to clean the workpiece, removing oil, scale, rust, paint, welding flux and spatter from the workpiece surface. The cleaning water sprayed in the spray nozzle 3 is at a temperature of 80-95℃, and the cleaning time is 10-15 minutes. Depending on the condition of the stains on the workpiece surface, a cleaning agent can be added as appropriate.

[0084] S3. After the workpiece surface is cleaned, let the workpiece stand still to allow the workpiece surface to dry. Then, use the lifting equipment to move the workpiece to the penetrant storage tank 2 for penetrant testing. Let the workpiece stand in the penetrant testing agent for 10-15 minutes to allow the penetrant testing agent to fully penetrate the workpiece.

[0085] During this penetrant testing process, the temperature of the penetrant is maintained at 20-45℃, and there are no components in the penetrant that react with the material of the workpiece.

[0086] S4. After the workpiece has been penetrated, use the lifting equipment to move the workpiece to the top of the penetrant storage tank 2, and turn on the nozzle 3 to remove the penetrant from the surface of the workpiece. At this time, the water pressure of the cleaning water sprayed in the cleaning water spray 3 is not greater than 0.34MPa, and the water temperature is not greater than 45℃.

[0087] S5. After cleaning, allow the workpiece to stand and dry. Once dry, remove the workpiece from the flaw detection box 1 and spray a color developer onto the workpiece surface using nozzle 3. Apply a color developer with a thickness of about 0.05 mm to the workpiece surface. Observe the color of the workpiece surface after 10-30 minutes to determine whether there are any defects. If fluorescence appears on the surface of the workpiece, it indicates that there are defects in the workpiece. Otherwise, there are no defects on the surface of the workpiece.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-destructive testing device for automobile beams, used for fluorescent penetrant testing of workpieces, characterized in that: It includes a flaw detection box (1), a penetrant storage tank (2), a nozzle (3), a movable cover (4), and a lifting fixture (5), among which, The penetrant storage box (2) is fixedly installed below the flaw detection box (1), and the side walls of the two are spaced apart. Both the penetrant storage box (2) and the flaw detection box (1) have openings on their top sides. The nozzle (3) is fixedly installed above the flaw detection box (1); The movable cover (4) is movably positioned in the middle of the flaw detection box (1); The movable cover (4) includes two cover plates (41), rollers (42) and two guide rails (43). The rollers (42) are rotatably mounted on the cover plates (41), and two rollers (42) are arranged opposite each other on each end of the cover plates (41). The rollers (42) are rolled within the guide rails (43), and two rollers (42) located at the same end of the cover plates (41) are connected to the same guide rail (43). The guide rail (43) is high in the middle and low on both sides; It also includes a telescopic rod (6), which is fixedly mounted on the hoisting clamp (5); the movable cover (4) also includes an elastic element (44), which is mounted on the cover plate (41); when the telescopic rod (6) abuts against the elastic element (44), it drives the cover plate (41) to move to the side of the penetrant storage tank (2); when the telescopic rod (6) does not abut against the elastic element (44), the cover plate (41) moves to the top of the penetrant storage tank (2); The elastic element (44) includes a sliding shaft (441), a sliding plate (442), a tension spring (443), and a connecting rod (444). The sliding shaft (441) is fixedly installed inside the flaw detection box (1). The sliding plate (442) is slidably installed on the sliding shaft (441). The tension spring (443) is fixedly installed on the sliding shaft (441), and one end of it is fixedly installed on the top side of the sliding plate (442). The two ends of the connecting rod (444) are respectively rotatably installed on the cover plate (41) and the sliding plate (442). The hoisting clamp (5) includes a mounting plate (51), a workpiece rack (52), and a fixing rod (53), wherein the mounting plate (51) is used to connect to the lifting equipment; The workpiece holder (52) has a water leakage hole (501) in the middle; the hoisting fixture (5) also includes two water distribution plates (54) and two counterweights (55), wherein the middle position of the water distribution plate (54) is rotatably set in the water leakage hole (501), and the counterweight (55) is fixedly set at one end of the bottom side of the water distribution plate (54) away from the center line of the water leakage hole (501).

2. The non-destructive testing device for automobile beams as described in claim 1, characterized in that: The two covers (41) are symmetrically arranged about the center line of the penetrant storage tank (2); The guide rail (43) is fixedly installed inside the flaw detection box (1), and the two guide rails (43) are symmetrically arranged about the center line of the penetrant storage box (2).

3. The non-destructive testing device for automobile beams as described in claim 2, characterized in that: The guide rail (43) has a gantry-like structure; When the movable cover (4) does not block the opening on the top side of the penetrant storage tank (2), the two cover plates (41) are located on both sides of the penetrant storage tank (2); when the movable cover (4) blocks the opening on the top side of the penetrant storage tank (2), the cover plate (41) is inclined, and the end of the cover plate (41) closer to the other cover plate (41) is higher than the end of the cover plate (41) farther away from the other cover plate (41).

4. The non-destructive testing device for automobile beams as described in claim 3, characterized in that: The telescopic rod (6) includes a sleeve (61), a support rod (62), and a spring (63), wherein, The upper end of the sleeve (61) is fixedly mounted on the lifting clamp (5); The support rod (62) is slidably disposed inside the sleeve (61); One end of the spring (63) is fixedly disposed inside the sleeve (61), and the other end abuts against the top side of the support rod (62).

5. The non-destructive testing device for automobile beams as described in claim 1, characterized in that: The workpiece holder (52) is located below the mounting plate (51); the fixing rod (53) is fixedly disposed between the mounting plate (51) and the workpiece holder (52).

6. The non-destructive testing device for automobile beams as described in claim 5, characterized in that: The two water distribution plates (54) are symmetrically arranged about the center line of the water leakage hole (501).

7. The non-destructive testing device for automobile beams as described in claim 6, characterized in that: The water distribution plate (54) includes a first rotating rod (541), a second rotating rod (542), a water receiving plate (543), and a water guiding plate (544). The middle position of the first rotating rod (541) is rotatably disposed in the water leakage hole (501). One end of the second rotating rod (542) is rotatably disposed in the water leakage hole (501) and parallel to the first rotating rod (541). The water receiving plate (543) is rotatably disposed between the first rotating rod (541) and the second rotating rod (542) and parallel to the workpiece holder (52). The water guiding plate (544) is fixedly disposed at the end of the first rotating rod (541) away from the water receiving plate (543) and is sealed and abutted against the water receiving plate (543). The counterweight (55) is fixedly disposed on the bottom side of the water guiding plate (544).

8. A method for non-destructive testing of automotive beams, using the automotive beam non-destructive testing device as described in any one of claims 1-7, characterized in that, Includes the following steps: S1, fix the hoisting fixture (5) on the lifting equipment and fix the workpiece on the hoisting fixture (5); S2, using the lifting device to move the workpiece to the top of the flaw detection box (1), and turning on the nozzle (3) to clean the workpiece and remove the stains on the surface of the workpiece; S3, the lifting device is used to move the workpiece; when the sliding plate (442) is pressured by the telescopic rod (6), it will slide downwards and drive the connecting rod (444) and the cover plate (41) to move downwards as well, so that the cover plate (41) moves to the side of the penetrant storage tank (2) to expose the opening on the top side of the penetrant storage tank (2) and allow the workpiece to enter the penetrant in the penetrant storage tank (2) for penetrant testing; S4, using the lifting device to move the workpiece above the penetrant storage tank (2); using the tension spring (443) to pull the sliding plate (442), causing the sliding plate (442) to slide upward, driving the lower end of the connecting rod (444) and the cover plate (41) to move the cover plate (41) to the top side of the penetrant storage tank (2), sealing the opening on the top side of the penetrant storage tank (2); opening the nozzle (3) to remove the penetrant from the surface of the workpiece; S5, using the nozzle (3) to spray a color developer onto the workpiece, observe the color of the workpiece surface, and determine whether the workpiece has defects.

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