A chassis plate flaw detection device with coating thickness detection

Abstract

The present invention relates to the technical field of chassis plate detection, and specifically to a chassis plate flaw detection device with coating thickness detection. The detection device performs coating thickness and flaw detection on a chassis plate to be detected. The detection device comprises a main body mechanism, a thickness detection mechanism, a positioning marking mechanism and a flaw detection mechanism. The main body mechanism is connected to the thickness detection mechanism, the thickness detection mechanism is connected to the positioning marking mechanism, the thickness detection mechanism is connected to the flaw detection mechanism, the thickness detection mechanism and the flaw detection mechanism detect the chassis plate to be detected, and the positioning marking mechanism performs positioning marking on the chassis plate to be detected.

Description

Technical Field

[0001] The invention relates to the technical field of chassis plate detection, in particular to a chassis plate flaw detection device with coating thickness detection. Background Art

[0002] In many industrial fields, metal components such as chassis panels are not only required to have good mechanical properties, but also require the surface coating to have a certain thickness and quality to ensure anti-corrosion, anti-rust and other properties.

[0003] In the inspection of chassis panels, it is necessary to test the coating thickness of the chassis panels. Although conventional coating thickness gauges can measure coating thickness more accurately, their accuracy may be affected by the coating material, substrate material and coating surface conditions (such as roughness, contamination, etc.), causing large errors during inspection, and their range is easily affected by the material of the object being measured.

[0004] Flaw detection is mainly used to detect defects in materials or workpieces, such as cracks, pores, inclusions, etc. During the production and use of chassis panels, these defects may have a serious impact on their performance and safety. Therefore, flaw detection of chassis panels is very important. Summary of the invention

[0005] The object of the present invention is to provide a chassis plate flaw detection device with coating thickness detection to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: a chassis plate flaw detection device with coating thickness detection.

[0007] The testing equipment performs coating thickness and flaw detection on the chassis plate to be tested. The testing equipment includes a main body mechanism, a thickness detection mechanism, a positioning marking mechanism and a flaw detection mechanism. The main body mechanism is connected to the thickness detection mechanism, the thickness detection mechanism is connected to the positioning marking mechanism, the thickness detection mechanism is connected to the flaw detection mechanism, the thickness detection mechanism and the flaw detection mechanism detect the chassis plate to be tested, and the positioning marking mechanism performs positioning marking on the chassis plate to be tested.

[0008] In the testing equipment, the main body mechanism is used to support the thickness detection mechanism, the positioning marking mechanism, the flaw detection mechanism, and to fix the chassis plate to be tested. The thickness detection mechanism is used to detect the coating thickness of the chassis plate to be tested. Because the thickness of the chassis plate to be tested itself is uniform, the thickness of the coating of the chassis plate to be tested can be detected by detecting the thickness of the chassis plate to be tested. The positioning marking mechanism marks the thinner coating area detected by the thickness detection mechanism to facilitate subsequent coating refilling. The flaw detection mechanism is used to perform flaw detection on the chassis plate to be tested to detect whether it has cracks, pores, etc.

[0009] Furthermore, the main mechanism includes a working base plate and an upper cover, the working base plate and the upper cover are fastened together, two slide grooves are symmetrically arranged on the working base plate, the upper cover is connected to the thickness detection mechanism, the working base plate is connected to the thickness detection mechanism, the main mechanism also includes a fixed baffle and a first hydraulic cylinder, two first hydraulic cylinders are provided, the fixed ends of the two first hydraulic cylinders are fastened together with the surfaces of the two slide grooves close to the edge of the working base plate, two fixed baffles are provided, the two fixed baffles are fastened together with the output ends of the two first hydraulic cylinders, the two fixed baffles are slidably connected to the two slide grooves, the minimum distance between the two fixed baffles is the thickness of a chassis plate to be tested, and the chassis plate to be tested is stuck between the two fixed baffles.

[0010] In the main mechanism, the main mechanism is used to provide a place for testing. The fixed baffle and the working bottom plate slide are slidably connected. The fixed baffle is pushed forward and backward by the first hydraulic cylinder. After the device is started, the chassis board to be tested is placed on the plane between the two slides. The two first hydraulic cylinders are started to push the two fixed baffles toward the direction of the chassis board to be tested until they are pushed to the limit. At this time, the two fixed baffles just clamp the chassis board to be tested.

[0011] Furthermore, the thickness detection mechanism includes a magnetic block, a metal belt, and a fixed box. Two magnetic blocks are provided, and two metal belts are provided. The two metal belts are respectively fastened to the two magnetic blocks. A movable groove is provided at the upper and lower ends of the magnetic block. There are two fixed boxes, and both fixed boxes are opened on one side. The inner wall of the fixed box is provided with two upper and lower long protrusions. The magnetic block and the fixed box are slidably connected through the movable groove and the long protrusion. One end of the magnetic block fixedly connected with the metal belt is tightly attached to the inner wall opposite to the opening of the fixed box. The side of the magnetic block close to the chassis plate to be tested is fastened to the displacement sensor. The thickness detection mechanism also includes a moving device. The moving device is provided with two groups. The two groups of moving devices are symmetrically arranged on both sides of the chassis plate to be tested with the chassis plate to be tested as the symmetry axis. The moving device is connected to the fixed box. The moving device includes a driving motor, a moving track, a moving fixed block and a support frame. The driving motor and the upper The cover is tightly connected, the output end of the driving motor is tightly connected to the moving track, the moving track is provided with threads, the distance from the support frame to the driving motor is greater than the distance from the driving motor to the side of the chassis plate to be tested away from the driving motor, one end of the support frame is tightly connected to the working bottom plate, a circular slot is provided on the top of the support frame, the end of the moving track away from the driving motor is rotatably connected to the circular slot on the top of the support frame, a circular through hole is provided in the middle of the moving fixed block, and the inner wall of the circular through hole of the moving fixed block is provided with threads, the moving fixed block and the moving track are engaged by threads, the moving fixed block extends the bottom plate toward one side of the chassis plate to be tested, the moving fixed block and the fixed box are tightly connected, a group of moving devices are connected to the positioning marking mechanism, the moving fixed block is connected to the positioning marking mechanism, another group of moving devices are connected to the flaw detection mechanism, and the moving fixed block is connected to the flaw detection mechanism.

[0012] In the thickness detection mechanism, the magnetic block and the wire are connected and energized, so that there is magnetic force on the magnetic block, and the metal belt is used to enhance the magnetic force of the magnetic block. The magnetic block is fixed by a fixed box, and the fixed box and the magnetic block are slidably connected. The upper and lower grooves of the magnetic block just fit with the protrusions on the upper and lower walls of the fixed box. Under normal conditions, the metal belt tightly connected to the back of the magnetic block just fits against the wall of the fixed box. When the thickness of the chassis plate to be tested remains unchanged, the distance between the two magnetic blocks will not change. The chassis plate to be tested with a constant thickness can just isolate the magnetic force between the two magnetic blocks. If the thickness of the chassis plate to be tested becomes thinner, the magnetic force cannot be isolated, and the two magnetic blocks will attract each other. The magnetic block and the fixed box are slidably connected, so the magnetic block will move toward the direction of the chassis plate to be tested. The displacement sensor is used to detect the displacement of the magnetic block. The moving device is used to control the movement of the thickness detection mechanism. The driving motor drives the moving track to rotate, so that the moving fixed block engaged with the moving track moves along the moving track, and the fixed box and the moving fixed block are tightly connected. When the fixed block moves, it will move with the fixed box to detect the coating thickness of the chassis plate to be tested. The support frame is used to rotate and connect with the other end of the moving track. The distance from the support frame to the drive motor is greater than the distance from the end of the chassis plate to be tested away from the drive motor to the drive motor. This can ensure that the magnetic block can be fully detected during the process of being driven to move and detect the thickness of the chassis plate to be tested, and there will be no situation where the chassis plate to be tested is not detected due to insufficient distance. After the device is started, the mobile device starts to move with the fixed box along the direction of the moving track. The magnetic block is placed in the fixed box and moves with it. The thickness of the chassis plate to be tested is uniform. Under normal circumstances, the thickness of the chassis plate to be tested can isolate the magnetic force between the two magnetic blocks. If it moves to a position where the coating becomes thinner, the magnetic force between the two magnetic blocks cannot be isolated. The two magnetic blocks will move toward the chassis plate to be tested along their respective fixed boxes, and the displacement of the magnetic block is detected by the displacement sensor, and the signal is transmitted to the positioning marking mechanism for marking.

[0013] Furthermore, the positioning marking mechanism includes a marking shell, a paint storage tank, a second hydraulic cylinder and a paint discharge pressure head. The marking shell is tightly connected to the movable fixed block, the marking shell is placed behind the fixed box, the marking shell is cylindrical, the second hydraulic cylinder is tightly connected to the inner wall of the marking shell, the output end of the second hydraulic cylinder is tightly connected to the paint storage tank, a paint outlet is provided at one end of the paint storage tank away from the second hydraulic cylinder, the paint outlet of the paint storage tank and the paint discharge pressure head are tightly connected, the paint storage tank is placed in the marking shell, a circular opening is provided on the wall surface of the marking shell away from the second hydraulic cylinder, and the paint discharge pressure head and the circular opening of the marking shell are slidably connected.

[0014] In the positioning marking mechanism, this mechanism is used to mark the area with thinner coating, so as to facilitate the later manual re-coating of coating. When the thickness detection mechanism detects that the coating is thin, the sensor detects the movement of the magnetic block, and the displacement sensor detects and transmits the signal to the positioning marking mechanism. At this time, the second hydraulic cylinder starts, pushing the paint storage tank toward the circular opening of the marking shell, and the paint discharge pressure head and the paint storage tank are tightly connected, so it is also pushed to move until the paint discharge pressure head and the thinner coating of the chassis board to be tested are in close contact. Since the paint storage tank is a softer tank, when the second hydraulic cylinder is driven forward, the end away from the second hydraulic cylinder hits the wall of the marking shell with a circular opening due to movement, and the second hydraulic cylinder continues to push, squeezing the paint storage tank, causing the paint liquid stored in the paint storage tank to flow into the paint discharge pressure head, and at this time the paint discharge pressure head is in close contact with the chassis board to be tested, so the paint liquid will leave a paint mark on the chassis board to be tested as a mark, which is convenient for later re-coating.

[0015] Furthermore, the flaw detection mechanism includes an ultrasonic flaw detector and an ultrasonic probe, the ultrasonic flaw detector and the ultrasonic probe are connected through an electrical signal, the ultrasonic flaw detector is tightly connected to the movable fixed block, the ultrasonic probe is tightly connected to the movable fixed block, and the detection end of the ultrasonic probe is directed toward the chassis plate to be tested.

[0016] The flaw detection mechanism is used to perform flaw detection on the chassis plate to be tested to detect whether it has cracks, pores, etc., and the detection is performed through an ultrasonic flaw detector and an ultrasonic probe. If no cracks or pores are detected, the ultrasonic flaw detector will not display them. If cracks, pores, etc. are detected, they will be displayed on the ultrasonic flaw detector.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: after starting, the present invention first places the chassis plate to be tested between the two slide grooves of the working bottom plate, the first hydraulic cylinder is started, pushing the fixed baffle plate toward the direction of the chassis plate to be tested, the chassis plate to be tested is fixed by the two fixed baffle plates, and then the chassis plate to be tested is tested, the driving motor drives the movable fixed block to move, a fixed box is fixedly connected to the movable fixed block, a magnetic block is slidably connected in the fixed box, the coating thickness is detected by the two magnetic blocks, the thickness of the chassis plate to be tested itself is uniform and fixed, therefore, the coating thickness is detected by detecting the overall thickness of the chassis plate to be tested, under normal circumstances, the thickness of the chassis plate to be tested can isolate the magnetic force between the two magnetic blocks, if it moves to the coating When the paint is thinned, the magnetic force between the two magnetic blocks cannot be isolated, and the two magnetic blocks will move along their respective fixed boxes toward the chassis plate to be tested. The displacement of the magnetic blocks is detected by the displacement sensor, and the signal is transmitted to the positioning marking mechanism. The second hydraulic cylinder pushes the paint storage tank forward, and the end away from the second hydraulic cylinder hits the wall with a circular opening on the marking shell due to the movement. The second hydraulic cylinder continues to push, squeezing the paint storage tank, causing the paint liquid stored in the paint storage tank to flow into the paint discharge pressure head. At this time, the paint discharge pressure head is in close contact with the chassis plate to be tested. Therefore, the paint liquid will leave paint marks on the chassis plate to be tested as a mark to facilitate later repainting, and then the chassis plate to be tested is inspected for flaws by an ultrasonic flaw detector and an ultrasonic probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more clear.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a front view of the present invention;

[0021] Figure 3 is a cross-sectional view of a thickness detection mechanism of the present invention;

[0022] Figure 4 is a schematic diagram of a thickness detection mechanism of the present invention;

[0023] Figure 5 is a transverse cross-sectional view of the positioning marking mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the flaw detection mechanism of the present invention;

[0025] In the figure: 1. chassis plate to be tested; 2. main body; 21. working bottom plate; 22. upper cover; 23. fixed baffle; 24. first hydraulic cylinder; 3. thickness detection mechanism; 31. magnetic block; 32. metal belt; 33. fixed box; 34. moving device; 341. driving motor; 342. moving track; 343. moving fixed block; 344. supporting frame; 4. positioning marking mechanism; 41. marking shell; 42. paint storage tank; 43. second hydraulic cylinder; 44. paint discharge pressure head; 5. flaw detection mechanism; 51. ultrasonic flaw detector; 52. ultrasonic probe. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] See also Figure 1-6 , the present invention provides a technical solution:

[0028] The detection equipment performs coating thickness and flaw detection on the chassis plate 1 to be tested. The detection equipment includes a main body mechanism 2, a thickness detection mechanism 3, a positioning marking mechanism 4 and a flaw detection mechanism 5. The main body mechanism 2 is connected to the thickness detection mechanism 3, the thickness detection mechanism 3 is connected to the positioning marking mechanism 4, the thickness detection mechanism 3 is connected to the flaw detection mechanism 5, the thickness detection mechanism 3 and the flaw detection mechanism 5 detect the chassis plate 1 to be tested, and the positioning marking mechanism 4 performs positioning marking on the chassis plate 1 to be tested.

[0029] In the detection equipment, the main body mechanism 2 is used to support the thickness detection mechanism 3, the positioning marking mechanism 4, the flaw detection mechanism 5, and to fix the chassis plate 1 to be tested. The thickness detection mechanism 3 is used to detect the coating thickness of the chassis plate 1 to be tested. Because the thickness of the chassis plate 1 to be tested itself is uniform, the thickness of the coating of the chassis plate 1 to be tested can be detected by detecting the thickness of the chassis plate 1 to be tested. The positioning marking mechanism 4 marks the thinner coating area detected by the thickness detection mechanism 3 to facilitate subsequent coating repair. The flaw detection mechanism 5 is used to perform flaw detection on the chassis plate 1 to be tested to detect whether it has cracks, pores, etc.

[0030] The main mechanism 2 includes a working base plate 21 and an upper cover 22, which are fastened to each other. Two slide grooves are symmetrically arranged on the working base plate 21. The upper cover 22 is connected to the thickness detection mechanism 3. The working base plate 21 is connected to the thickness detection mechanism 3. The main mechanism 2 also includes a fixed baffle 23 and a first hydraulic cylinder 24. Two first hydraulic cylinders 24 are provided. The fixed ends of the two first hydraulic cylinders 24 are fastened to the surfaces of the two slide grooves close to the edges of the working base plate 21 respectively. Two fixed baffles 23 are provided. The two fixed baffles 23 are fastened to the output ends of the two first hydraulic cylinders 24 respectively. The two fixed baffles 23 are slidably connected to the two slide grooves respectively. The minimum distance between the two fixed baffles 23 is the thickness of a chassis plate 1 to be tested. The chassis plate 1 to be tested is stuck between the two fixed baffles 23.

[0031] In the main mechanism 2, the main mechanism 2 is used to provide a place for testing. The fixed baffle 23 and the working bottom plate 21 are slidably connected in the slide groove. The fixed baffle 23 is pushed forward and backward by the first hydraulic cylinder 24. After the device is started, the chassis plate 1 to be tested is placed on the plane between the two slide grooves. The two first hydraulic cylinders 24 are started to push the two fixed baffles 23 toward the direction of the chassis plate 1 to be tested until they are pushed to the limit. At this time, the two fixed baffles 23 just clamp the chassis plate 1 to be tested.

[0032] The thickness detection mechanism 3 includes a magnetic block 31, a metal belt 32, and a fixed box 33. There are two magnetic blocks 31, two metal belts 32, and the two metal belts 32 are respectively fastened to the two magnetic blocks 31. The upper and lower ends of the magnetic block 31 are provided with movable grooves. There are two fixed boxes 33. Both of the two fixed boxes 33 are open on one side. The inner wall of the fixed box 33 is provided with two upper and lower long protrusions. The magnetic block 31 and the fixed box 33 are slidably connected through the movable groove and the long protrusion. The magnetic block 31 is fixedly connected to one end of the metal belt 32 and the fixed box 33. The inner wall opposite to the opening is tightly attached, and the magnetic block 31 is close to one side of the chassis plate 1 to be tested and is tightly connected to the displacement sensor. The thickness detection mechanism 3 also includes a moving device 34, and the moving device 34 is provided with two groups. The two groups of moving devices 34 are symmetrically arranged on both sides of the chassis plate 1 to be tested with the chassis plate 1 to be tested as the symmetry axis. The moving device 34 is connected to the fixing box 33. The moving device 34 includes a driving motor 341, a moving track 342, a moving fixing block 343 and a supporting frame 344. The driving motor 341 is tightly connected to the upper cover 22 The output end of the driving motor 341 is fastened to the moving track 342, and the moving track 342 is provided with a thread. The distance between the support frame 344 and the driving motor 341 is greater than the distance between the driving motor 341 and the side of the chassis board 1 to be tested away from the driving motor 341. One end of the support frame 344 is fastened to the working bottom plate 21, and a circular groove is provided on the top of the support frame 344. The end of the moving track 342 away from the driving motor 341 is rotatably connected to the circular groove on the top of the support frame 344. The movable fixed block 343 is provided in the middle There is a circular through hole, and the inner wall of the circular through hole of the movable fixed block 343 is provided with a thread, the movable fixed block 343 and the movable rail 342 are engaged by threads, the movable fixed block 343 extends the bottom plate toward one side of the chassis board 1 to be tested, the movable fixed block 343 and the fixed box 33 are fastened together, one group of movable devices 34 are connected to the positioning marking mechanism 4, the movable fixed block 343 is connected to the positioning marking mechanism 4, another group of movable devices 34 are connected to the flaw detection mechanism 5, and the movable fixed block 343 is connected to the flaw detection mechanism 5.

[0033] In the thickness detection mechanism 3, the magnetic block 31 is connected to the wire and energized, so that there is magnetic force on the magnetic block 31, and the metal belt 32 is used to enhance the magnetic force of the magnetic block 31. The magnetic block 31 is fixed by a fixing box 33, and the fixing box 33 and the magnetic block 31 are slidably connected. The upper and lower grooves of the magnetic block 31 just fit with the protrusions on the upper and lower walls of the fixing box 33. Under normal conditions, the metal belt 32 fastened to the back of the magnetic block 31 just fits on the wall of the fixing box 33. When the thickness of the chassis plate 1 to be tested remains unchanged, the distance between the two magnetic blocks 31 will not change, and the chassis plate 1 to be tested with a constant thickness can just The magnetic force between the two magnetic blocks 31 is isolated. If the thickness of the chassis plate 1 to be tested becomes thinner, the magnetic force cannot be isolated, and the two magnetic blocks 31 will attract each other. The magnetic block 31 and the fixed box 33 are slidably connected, so the magnetic block 31 will move toward the chassis plate 1 to be tested. The displacement sensor is used to detect the displacement of the magnetic block 31. The moving device 34 is used to control the movement of the thickness detection mechanism 3. The driving motor 341 drives the moving track 342 to rotate, so that the moving fixed block 343 engaged with the moving track 342 moves along the moving track 342, and the fixed box 33 and the moving fixed block 343 are tightly connected. Therefore, when the mobile fixed block 343 moves, it will move with the fixed box 33 to detect the coating thickness of the chassis plate 1 to be tested. The support frame 344 is used to be rotatably connected to the other end of the moving track 342. The distance from the support frame 344 to the drive motor 341 is greater than the distance from the end of the chassis plate 1 to be tested away from the drive motor 341 to the drive motor 341. This ensures that the magnetic block 31 can be driven to move to detect the thickness of the chassis plate 1 to be tested. The chassis plate 1 to be tested can be fully detected, and there will be no situation where it is not detected due to insufficient distance. After starting, the moving device 34 starts to move with the fixed box 33 along the direction of the moving track 342, and the magnetic block 31 placed in the fixed box 33 moves along with it. The thickness of the chassis plate 1 to be tested is uniform. Under normal circumstances, the thickness of the chassis plate 1 to be tested can isolate the magnetic force between the two magnetic blocks 31. If it moves to a position where the coating becomes thinner, the magnetic force between the two magnetic blocks 31 cannot be isolated. The two magnetic blocks 31 will move toward the chassis plate 1 to be tested along their respective fixed boxes 33, and the displacement of the magnetic block 31 is detected by the displacement sensor, and the signal is transmitted to the positioning marking mechanism 4 for marking.

[0034] The positioning marking mechanism 4 includes a marking shell 41, a paint storage tank 42, a second hydraulic cylinder 43 and a paint discharge pressure head 44. The marking shell 41 is fastened to the movable fixed block 343, the marking shell 41 is placed behind the fixed box 33, the marking shell 41 is cylindrical, the second hydraulic cylinder 43 is fastened to the inner wall of the marking shell 41, the output end of the second hydraulic cylinder 43 is fastened to the paint storage tank 42, a paint outlet is provided at one end of the paint storage tank 42 away from the second hydraulic cylinder 43, the paint outlet of the paint storage tank 42 and the paint discharge pressure head 44 are fastened to the paint storage tank 42, the paint storage tank 42 is placed in the marking shell 41, a circular opening is provided on the wall of the marking shell 41 away from the second hydraulic cylinder 43, and the paint discharge pressure head 44 and the circular opening of the marking shell 41 are slidably connected.

[0035] In the positioning marking mechanism 4, the mechanism is used to mark the area where the coating is thinner, so as to facilitate the later manual coating. When the thickness detection mechanism 3 detects that the coating is thinner, the sensor detects the movement of the magnetic block 31, and the displacement sensor detects and transmits the signal to the positioning marking mechanism 4. At this time, the second hydraulic cylinder 43 is started, pushing the paint storage tank 42 to move toward the circular opening of the marking housing 41, and the paint pressure head 44 is tightly connected to the paint storage tank 42, so it is also pushed and moved until the paint pressure head 44 and the coating of the chassis plate 1 to be tested are aligned. The thinner part is tightly attached. Since the paint storage tank 42 is a softer tank, when the second hydraulic cylinder 43 drives forward, the end away from the second hydraulic cylinder 43 moves and hits the wall with a circular opening of the marking shell 41. The second hydraulic cylinder 43 continues to push, squeezing the paint storage tank 42, so that the paint liquid stored in the paint storage tank 42 flows into the paint discharge pressure head 44. At this time, the paint discharge pressure head 44 is in close contact with the chassis plate 1 to be tested. Therefore, the paint liquid will leave a paint mark on the chassis plate 1 to be tested as a mark, which is convenient for later repainting.

[0036] The flaw detection mechanism 5 includes an ultrasonic flaw detector 51 and an ultrasonic probe 52, the ultrasonic flaw detector 51 and the ultrasonic probe 52 are connected by electrical signals, the ultrasonic flaw detector 51 is fastened to the movable fixed block 343, the ultrasonic probe 52 is fastened to the movable fixed block 343, and the detection end of the ultrasonic probe 52 is directed toward the chassis plate 1 to be tested.

[0037] The flaw detection mechanism 5 is used to perform flaw detection on the chassis plate 1 to be tested to detect whether it has cracks, pores, etc., and the detection is performed through an ultrasonic flaw detector 51 and an ultrasonic probe 52. If no cracks or pores are detected, the ultrasonic flaw detector 51 will not display them. If cracks, pores, etc. are detected, they will be displayed on the ultrasonic flaw detector 51.

[0038] Working principle of the present invention: after starting, the present invention first puts the chassis plate 1 to be tested between the two slide grooves of the working bottom plate 21, and the first hydraulic cylinder 24 is started to push the fixed baffle 23 toward the direction of the chassis plate 1 to be tested, and the chassis plate 1 to be tested is fixed by the two fixed baffles 23, and then the chassis plate 1 to be tested is tested, and the driving motor 341 drives the movable fixed block 343 to move, and the movable fixed block 343 is fixedly connected with a fixed box 33, and the fixed box 33 is slidably connected with a magnetic block 31, and the coating thickness is detected by the two magnetic blocks 31. The thickness of the chassis plate 1 to be tested is uniform and fixed. Therefore, the coating thickness is detected by detecting the overall thickness of the chassis plate 1 to be tested. Under normal circumstances, the thickness of the chassis plate 1 to be tested can isolate the magnetic force between the two magnetic blocks 31. If it moves to a position where the coating becomes thinner, The magnetic force between the two magnetic blocks 31 cannot be isolated, and the two magnetic blocks 31 will move toward the chassis plate 1 to be tested along their respective fixed boxes 33. The displacement of the magnetic blocks 31 is detected by the displacement sensor, and the signal is transmitted to the positioning marking mechanism 4. The second hydraulic cylinder 43 pushes the paint storage tank 42 forward, and the end away from the second hydraulic cylinder 43 hits the wall with a circular opening of the marking shell 41 due to the movement. The second hydraulic cylinder 43 continues to push, squeezing the paint storage tank 42, so that the paint liquid stored in the paint storage tank 42 flows into the paint discharge pressure head 44. At this time, the paint discharge pressure head 44 is in close contact with the chassis plate 1 to be tested, so the paint liquid will leave a paint mark on the chassis plate 1 to be tested as a mark, which is convenient for later repainting, and then the chassis plate 1 to be tested is inspected by an ultrasonic flaw detector 51 and an ultrasonic probe 52.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A chassis plate flaw detection device with coating thickness detection, the detection device performs coating thickness and flaw detection on a chassis plate (1) to be tested, characterized in that: The detection device comprises a main body mechanism (2), a thickness detection mechanism (3), a positioning marking mechanism (4) and a flaw detection mechanism (5); the main body mechanism (2) is connected to the thickness detection mechanism (3), the thickness detection mechanism (3) is connected to the positioning marking mechanism (4), the thickness detection mechanism (3) is connected to the flaw detection mechanism (5), the thickness detection mechanism (3) and the flaw detection mechanism (5) detect the chassis plate (1) to be detected, and the positioning marking mechanism (4) performs positioning marking on the chassis plate (1) to be detected; The main body mechanism (2) comprises a working base plate (21) and an upper cover (22), the working base plate (21) and the upper cover (22) are fastened together, two sliding grooves are symmetrically provided on the working base plate (21), the upper cover (22) and the thickness detection mechanism (3) are connected, and the working base plate (21) and the thickness detection mechanism (3) are connected; The thickness detection mechanism (3) comprises a magnetic block (31), a metal belt (32), a fixed box (33) and a displacement sensor. The magnetic block (31) is provided with two, the metal belt (32) is provided with two, the two metal belts (32) are respectively fastened to the two magnetic blocks (31), the upper and lower ends of the magnetic block (31) are provided with movable grooves, the fixed boxes (33) are provided with two, both of the two fixed boxes (33) are provided with an opening on one side, the inner wall of the fixed box (33) is provided with two upper and lower long protrusions, the magnetic block (31) and the fixed box (33) are slidably connected via the movable groove and the long protrusions, one end of the magnetic block (31) fixedly connected with the metal belt (32) is in close contact with the inner wall of the fixed box (33) opposite to the opening, and the side of the magnetic block (31) close to the chassis plate (1) to be tested is fastened to the displacement sensor; The thickness detection mechanism (3) further comprises a moving device (34), wherein the moving device (34) is provided with two groups, and the two groups of the moving devices (34) are symmetrically arranged on both sides of the chassis plate (1) to be tested with the chassis plate (1) to be tested as a symmetry axis, the moving device (34) is connected to the fixing box (33), the moving device (34) comprises a driving motor (341), a moving track (342), a moving fixing block (343) and a support frame (344), the driving motor (341) is fastened to the upper cover (22), the output end of the driving motor (341) is fastened to the moving track (342), the moving track (342) is provided with a thread, the distance between the support frame (344) and the driving motor (341) is greater than the distance between the driving motor (341) and the side of the chassis plate (1) to be tested away from the driving motor (341), and one end of the support frame (344) and the working bottom plate (2 1) A fastened connection, wherein a circular slot is provided at the top of the support frame (344), an end of the movable track (342) away from the driving motor (341) is rotatably connected to the circular slot at the top of the support frame (344), a circular through hole is provided in the middle of the movable fixed block (343), a thread is provided on the inner wall of the circular through hole of the movable fixed block (343), the movable fixed block (343) and the movable track (342) are engaged by threads, the movable fixed block (343) extends a bottom plate toward one side of the chassis board (1) to be tested, the movable fixed block (343) and the fixed box (33) are fastened together, one group of the movable devices (34) are connected to the positioning marking mechanism (4), the movable fixed block (343) and the positioning marking mechanism (4), another group of the movable devices (34) are connected to the flaw detection mechanism (5), and the movable fixed block (343) and the flaw detection mechanism (5) are connected.

2. The chassis plate flaw detection equipment with coating thickness detection according to claim 1 is characterized in that: The main body mechanism (2) further comprises a fixed baffle (23) and a first hydraulic cylinder (24), wherein two first hydraulic cylinders (24) are provided, and the fixed ends of the two first hydraulic cylinders (24) are respectively fastened to the surfaces of the two slide grooves close to the edges of the working bottom plate (21), and the two fixed baffles (23) are provided, and the two fixed baffles (23) are respectively fastened to the output ends of the two first hydraulic cylinders (24), and the two fixed baffles (23) are respectively slidably connected to the two slide grooves, and the minimum distance between the two fixed baffles (23) is the thickness of a chassis plate (1) to be tested, and the chassis plate (1) to be tested is stuck between the two fixed baffles (23).

3. The chassis plate flaw detection equipment with coating thickness detection according to claim 1 is characterized in that: The positioning marking mechanism (4) comprises a marking housing (41), a paint storage tank (42), a second hydraulic cylinder (43) and a paint discharge pressure head (44); the marking housing (41) is tightly connected to the movable fixed block (343); the marking housing (41) is placed behind the fixed box (33); the marking housing (41) is cylindrical; the second hydraulic cylinder (43) is tightly connected to the inner wall of the marking housing (41); the output end of the second hydraulic cylinder (43) is tightly connected to the paint storage tank (42); a paint discharge port is provided at one end of the paint storage tank (42) away from the second hydraulic cylinder (43); the paint discharge port of the paint storage tank (42) is tightly connected to the paint discharge pressure head (44); the paint storage tank (42) is placed in the marking housing (41); a circular opening is provided on the wall of the marking housing (41) away from the second hydraulic cylinder (43); the paint discharge pressure head (44) is slidably connected to the circular opening of the marking housing (41).

4. The chassis plate flaw detection equipment with coating thickness detection according to claim 1 is characterized in that: The flaw detection mechanism (5) comprises an ultrasonic flaw detector (51) and an ultrasonic probe (52); the ultrasonic flaw detector (51) and the ultrasonic probe (52) are connected via an electrical signal; the ultrasonic flaw detector (51) and the movable fixed block (343) are tightly connected; the ultrasonic probe (52) and the movable fixed block (343) are tightly connected; and the detection end of the ultrasonic probe (52) faces the chassis plate (1) to be tested.

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