Automatic ultrasonic flaw detection device

Abstract

The utility model discloses an automatic ultrasonic flaw detection device which comprises a control system, a cantilever, an ultrasonic probe, a coupling agent conveying device, a dust removal device and a lifting device, the dust removal device comprises two dust removal brushes, a second connecting rod, a guide block and a negative pressure exhaust fan, and a magnetic driving wheel is arranged at the bottom of a shell. The edge of the outer surface of the magnetic driving wheel is fixedly connected with the second connecting rod, the other end of the second connecting rod is rotationally connected to the outer side of the guide block, the guide block is slidably connected into a guide hole formed in the side face of the dust collection cover shell, and the guide block is fixedly connected with the dust removal brush. The ultrasonic flaw detection device disclosed by the utility model has the beneficial effects that the ultrasonic flaw detection device can carry out dust removal treatment on a welding joint area before carrying out nondestructive flaw detection on a welding joint to prevent dust from causing errors to a detection result, and the dust hood is arranged to prevent the dust from drifting away and polluting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial detection equipment manufacturing, in particular to an automatic ultrasonic flaw detection device. Background Art

[0002] Ultrasonic nondestructive testing is a method of inspecting part defects by using the characteristic that ultrasound can penetrate deep into metal materials and reflect at the edge of the interface when entering from one section to another. When the ultrasonic beam passes from the surface of the part through the probe to the inside of the metal, reflected waves are generated when encountering defects and the bottom of the part, forming pulse waveforms on the fluorescent screen. The location and size of the defects are determined based on these pulse waveforms.

[0003] The patent document with publication number CN117723632A discloses an ultrasonic inspection robot for welding joints of high-altitude steel structures and an inspection method thereof. The robot drives the vehicle on the high-altitude steel structures through magnetic drive wheels, and uses a camera to locate the position of the weld joints, and performs ultrasonic inspection on both sides of the weld joints.

[0004] The surface of high-altitude steel structures is easily stained with dust, which will affect the results of ultrasonic flaw detection. However, the above-mentioned ultrasonic inspection robot for welded joints does not have a dust removal device, and the data obtained has certain errors. Utility Model Content

[0005] In view of the above-mentioned prior art, the utility model provides an automatic ultrasonic flaw detection device to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0007] An automated ultrasonic flaw detection device comprises a control system, a cantilever, an ultrasonic probe, a coupling agent delivery device, a dust removal device and a lifting device, wherein the control system is installed in a shell, the shell is fixedly connected to the cantilever through a first connecting rod, the coupling agent delivery device is fixedly connected to the cantilever, the lifting device is fixedly connected to the cantilever, the lifting device is fixedly connected to the ultrasonic probe, the ultrasonic probe is connected to the coupling agent delivery device through a delivery pipe, the dust removal device comprises two dust removal brushes, a second connecting rod, a guide block and a negative pressure exhaust fan, the negative pressure exhaust fan is fixedly connected to the cantilever, the negative pressure exhaust fan is fixedly connected to an exhaust duct, and the exhaust duct The duct is located between the ultrasonic probe and the dust removal brush, a dust hood is provided at one end of the exhaust duct close to the dust removal brush, a through hole is provided at the bottom of the dust removal hood, and the side of the dust removal hood is communicated with the exhaust duct, a magnetic driving wheel is provided at the bottom of the shell, the second connecting rod is fixedly connected to the edge of the outer surface of the magnetic driving wheel, the other end of the second connecting rod is rotatably connected to the outer side of the guide block, the guide block is slidably connected to the guide hole provided on the side of the dust removal hood shell, the guide block is fixedly connected to the dust removal brush, the dust removal brushes are respectively located on both sides of the welding joint, and the ultrasonic probe, the lifting device and the coupling agent delivery device are respectively electrically connected to the control system.

[0008] Preferably, the shell as a whole is a rectangular parallelepiped car, a gyroscope is provided in the shell, and the gyroscope is electrically connected to the control system.

[0009] Preferably, the lifting device includes a connecting block, a lifting frame, a slider, and a hydraulic lifter. The lifting frame is fixedly connected to the cantilever through the connecting block. The lifting frame is provided with a slide rail. The slider is slidably connected to the slide rail. The hydraulic lifter is provided on one side of the slide rail at the bottom of the lifting frame. The bottom of the slider is fixedly connected to the push rod of the hydraulic lifter, and the side of the slider is fixedly connected to the ultrasonic probe through a connecting rod.

[0010] Preferably, the ultrasonic probe is provided with a probe clamp, which includes a probe frame and a fixing frame, the probe frame is fixedly connected to the ultrasonic probe, the outer side surface of the probe frame is provided with a connecting block, the inner side surface of the fixing frame is provided with a groove corresponding to the connecting block, a plurality of evenly distributed elastic elements are provided on the top of the groove, the elastic element is fixedly connected to the connecting block, and the fixing frame is fixedly connected to the lifting device.

[0011] Preferably, a filter is provided at the air intake port of the negative pressure exhaust fan, and a collection box is provided at the bottom of the exhaust duct located on the side of the filter.

[0012] Preferably, the rear wheel of the magnetic driving wheel is a magnetic roller, and the front wheel is an encoder wheel disc, the encoder wheel disc is connected to the control system signal, and the magnetic roller is connected to the driving motor inside the control system.

[0013] Preferably, a third connecting rod is provided below the cantilever, and a sponge block is provided at the bottom of the third connecting rod.

[0014] The beneficial effect of the utility model is that the ultrasonic flaw detection device described in the utility model can first remove dust from the welding joint area before performing non-destructive flaw detection on the welding joint to prevent dust from causing errors in the detection result, and a dust suction hood is provided to prevent dust from floating and polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an automated ultrasonic flaw detection device in an embodiment of the present application;

[0016] Figure 2 This is a schematic diagram of the front structure of an automated ultrasonic flaw detection device in an embodiment of the present application;

[0017] Figure 3 for Figure 1 AA section view of the middle dust hood;

[0018] Figure 4 for Figure 1 BB section view of medium negative pressure exhaust fan and exhaust duct;

[0019] Figure 5 for Figure 2 Enlarged view of middle C;

[0020] Figure 6 for Figure 2 DD cross-section of the probe fixture and ultrasonic probe;

[0021] Figure 7 This is a schematic diagram of the structure of the lifting device in the embodiment of the present application;

[0022] Description of Figure Numbers:

[0023] 1. Shell; 2. Cantilever; 3. Ultrasonic probe; 4. Coupling agent delivery device; 5. Dust removal device; 501. Dust brush; 502. Second connecting rod; 503. Guide block; 504. Negative pressure exhaust fan; 505. Exhaust duct; 506. Dust hood; 507. Through hole; 6. Lifting device; 601. Connecting block; 602. Lifting frame; 603. Sliding block; 604. Hydraulic lifter; 605. Slide rail; 606. Connecting rod; 7. First connecting rod; 8. Delivery pipe; 9. Magnetic drive wheel; 901. Magnetic roller; 902. Encoder wheel; 10. Guide hole; 11. Probe fixture; 1101. Probe frame; 1102. Fixing frame; 1103. Connecting block; 1104. Groove; 1105. Elastic element; 12. Filter; 13. Collecting box; 14. Third connecting rod; 15. Sponge block. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" is involved, which describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0025] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] Example 1

[0027] Please refer to Figure 1-5The present application provides an automated ultrasonic flaw detection device, including a control system, a cantilever 2, an ultrasonic probe 3, a coupling agent delivery device 4, a dust removal device 5 and a lifting device 6. The control system is installed in a housing 1, and the housing 1 is fixedly connected to the cantilever 2 through a first connecting rod 7. The coupling agent delivery device 4 is fixedly connected to the cantilever 2, and the lifting device 6 is fixedly connected to the cantilever 2. The lifting device 6 is fixedly connected to the ultrasonic probe 3, and the ultrasonic probe 3 is connected to the coupling agent delivery device 4 through a delivery pipe 8. The dust removal device 5 includes two dust removal brushes 501, a second connecting rod 502, a guide block 503 and a negative pressure exhaust fan 504. The negative pressure exhaust fan 504 is fixedly connected to the cantilever 2, and the negative pressure exhaust fan 504 is fixedly connected to the exhaust duct 505. The exhaust duct 505 is located A dust hood 506 is provided at one end of the exhaust duct 505 close to the dust brush 501 between the ultrasonic probe 3 and the dust removal brush 501, a through hole 507 is provided at the bottom of the dust hood 506, and the side of the dust hood 506 is communicated with the exhaust duct 505, a magnetic driving wheel 9 is provided at the bottom of the shell 1, the second connecting rod 502 is fixedly connected to the edge of the outer surface of the magnetic driving wheel 9, the other end of the second connecting rod 502 is rotatably connected to the outer side of the guide block 503, the guide block 503 is slidably connected to the guide hole 10 provided on the side of the shell of the dust hood 506, the guide block 503 is fixedly connected to the dust removal brush 501, and the dust removal brushes 501 are respectively located on both sides of the welding joint, and the ultrasonic probe 3, the lifting device 6 and the coupling agent conveying device 4 are respectively electrically connected to the control system.

[0028] The ultrasonic flaw detection device described in the utility model is brought by a staff member to the welding joint of the inspected workpiece and placed there. The magnetic driving wheel 9 attracts the shell 1 to the inspected workpiece through magnetic force to ensure that the shell 1 can stably walk on the inspected workpiece. The magnetic driving wheel 9 moves the shell 1 forward along the axial direction of the welding joint. The second connecting rod 502 connected to the magnetic driving wheel 9 drives the guide block 503 to make reciprocating linear motion in the guide hole 10, and at the same time drives the dust removal brush 501 in the dust cover 506 to remove dust from the inspected area. At the same time, the negative pressure exhaust fan 504 is started to suck the dust in the dust cover 506 into the exhaust duct 505, thereby avoiding the dust from affecting the flaw detection accuracy of the ultrasonic probe 3. The control system controls the lifting The lowering device 6 moves the ultrasonic probe 3 downward to ensure that the ultrasonic probe 3 is in contact with the surface of the workpiece to be inspected during detection. The ultrasonic probe 3 is suspended during movement to reduce the wear of the ultrasonic probe 3 and improve the practicability of the device. While the ultrasonic probe 3 is in contact with the surface of the workpiece to be inspected, the coupling agent delivery device 4 includes a water pump and a water tank. The water pump is located in the water tank on the ground. The coupling agent delivery device 4 pumps water from the water tank through the water pump and delivers the coupling agent to between the ultrasonic probe 3 and the workpiece to be inspected through the delivery pipe 8, thereby reducing the friction between the ultrasonic probe 3 and the workpiece to be inspected and improving the practicability of the ultrasonic probe 3. The entire operation is completed by a staff member on the ground by remotely connecting to the control system, thereby improving the automation level of the overall device.

[0029] Specifically, the shell 1 is a rectangular trolley as a whole, and the shell 1 is provided with a gyroscope, which is electrically connected to the control system. The gyroscope in the shell 1 is turned on during detection, and the gyroscope detects whether the shell 1 is tilted and transmits the tilt data to the PLC control circuit in the control system. The PLC control circuit controls the up and down movement of the lifting device 6, and then controls the ultrasonic probe 3 to always contact the surface of the inspected workpiece, avoiding the ultrasonic probe 3 from generating a lift-off signal due to the uneven surface of the inspected workpiece, thereby ensuring the accuracy of flaw detection.

[0030] Specifically, the lifting device 6 includes a connection block 601, a lifting frame 602, a slider 603, and a hydraulic lifter 604. The lifting frame 602 is fixedly connected to the cantilever 2 through the connection block 601. The lifting frame 602 is provided with a slide rail 605. The slider 603 is slidably connected to the slide rail 605. The bottom of the lifting frame 602 is provided with the hydraulic lifter 604 on one side of the slide rail 605. The bottom of the slider 603 is fixedly connected to the push rod of the hydraulic lifter 604. The side of the slider 603 is fixedly connected to the ultrasonic probe 3 through a connecting rod 606. After the flaw detection position is reached, the hydraulic lifter 604 controls the slider 603 to slide downward on the slide rail 605 on the lifting frame 602, driving the ultrasonic probe 3 to press down and contact with the surface of the workpiece to perform flaw detection. After the flaw detection is completed, the hydraulic lifter 604 controls the ultrasonic probe 3 to move up and suspend in the air to perform flaw detection in the next area, thereby reducing the wear of the probe and improving the practicality of the device.

[0031] Example 2

[0032] Please refer to the attached Figure 1-7 The difference between this embodiment and embodiment 1 is that the ultrasonic probe 3 is provided with a probe clamp 11, and the probe clamp 11 includes a probe frame 1101 and a fixing frame 1102, the probe frame 1101 is fixedly connected to the ultrasonic probe 3, the outer side surface of the probe frame 1101 is provided with a connecting block 1103, the inner side surface of the fixing frame 1102 is provided with a groove 1104 corresponding to the connecting block 1103, and the top of the groove 1104 is provided with a plurality of evenly distributed elastic elements 1105, the elastic elements 1105 are fixedly connected to the connecting block 1103, and the fixing frame 1102 is fixedly connected to the lifting device 6. The probe frame 1101 fixes the ultrasonic probe 3 in the probe frame 1101 by means of a knurled flat head screw. The probe frame 1101 is fixed in the groove 1104 of the fixing frame 1102 by means of a connecting block 1103 and an elastic element 1105. When the ultrasonic probe 3 is pressed down to contact the surface of the workpiece to be inspected, the elastic element 1105 can ensure that the ultrasonic probe 3 automatically adapts to the uneven welds on the workpiece, thereby ensuring that the ultrasonic probe 3 is in close contact with the surface of the workpiece to ensure the accuracy of flaw detection, and at the same time preventing the ultrasonic probe 3 from being damaged by collision or excessive force of contact, thereby ensuring the integrity of the ultrasonic probe 3, extending its service life, and reducing maintenance costs.

[0033] Specifically, the suction port of the negative pressure exhaust fan 504 is provided with a filter 12, and the exhaust duct 505 is provided with a collection box 13 at the bottom of the duct located on the side of the filter 12. The dust cleaned by the dust brush 501 in the dust hood 506 is sucked into the exhaust duct 505 through the negative pressure exhaust fan 504. During the process of the dust being sucked into the exhaust duct 505, the dust is filtered and collected by the filter 12 at the suction port of the negative pressure exhaust fan 504, so as to prevent the dust from entering the negative pressure exhaust fan 504 and causing damage to the negative pressure exhaust fan 504, and to ensure the stable operation of the dust removal device 5. After the flaw detection is completed, the dust on the filter 12 falls into the collection box 13 by knocking on the duct, so as to prevent the dust from clogging the filter 12 and affecting the next flaw detection, and to collect the dust to avoid polluting the environment.

[0034] Specifically, the rear wheel of the magnetic driving wheel 9 is a magnetic roller 901, and the front wheel is an encoder wheel disc 902. The encoder wheel disc 902 is connected to the control system signal, and the magnetic roller 901 is connected to the driving motor inside the shell 1. The driving motor inside the shell 1 drives the magnetic roller 901 to move on the inspected workpiece to realize the movement of the shell 1, which is convenient for the ultrasonic probe 3 to detect the flaws on both sides of the welding joint. During the movement, the encoder wheel disc 902 and the magnetic roller 901 rotate simultaneously, and the moving distance and position of the shell 1 are recorded by the control system, which is convenient for the subsequent determination of the location of the defect.

[0035] Specifically, a third connecting rod 14 is provided under the cantilever 2, and a sponge block 15 is provided at the bottom of the third connecting rod 14. When the control system controls the ultrasonic probe 3 to detect flaws, the sponge block under the cantilever 2 moves with the housing 1 to wipe the detected area to prevent the magnetic drive wheel 9 from slipping and causing inaccurate flaw detection data.

[0036] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. The protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An automated ultrasonic flaw detection device, characterized in that: The invention comprises a control system, a cantilever, an ultrasonic probe, a coupling agent delivery device, a dust removal device and a lifting device, wherein the control system is installed in a shell, the shell is fixedly connected to the cantilever through a first connecting rod, the coupling agent delivery device is fixedly connected to the cantilever, the lifting device is fixedly connected to the cantilever, the lifting device is fixedly connected to the ultrasonic probe, the ultrasonic probe is connected to the coupling agent delivery device through a delivery pipe, the dust removal device comprises two dust removal brushes, a second connecting rod, a guide block and a negative pressure exhaust fan, the negative pressure exhaust fan is fixedly connected to the cantilever, the negative pressure exhaust fan is fixedly connected to the exhaust duct, and the exhaust duct is located at the cantilever. A dust hood is provided at one end of the exhaust duct close to the dust brush between the ultrasonic probe and the dust removal brush, a through hole is provided at the bottom of the dust hood, and the side of the dust hood is communicated with the exhaust duct, a magnetic driving wheel is provided at the bottom of the outer shell, the second connecting rod is fixedly connected to the edge of the outer surface of the magnetic driving wheel, the other end of the second connecting rod is rotatably connected to the outer side of the guide block, the guide block is slidably connected to the guide hole provided on the side of the dust hood outer shell, the guide block is fixedly connected to the dust removal brush, the dust removal brushes are respectively located on both sides of the welding joint, and the ultrasonic probe, the lifting device and the coupling agent delivery device are respectively electrically connected to the control system.

2. The automatic ultrasonic flaw detection device according to claim 1, characterized in that: The shell is a rectangular parallelepiped, a gyroscope is arranged inside the shell, and the gyroscope is electrically connected to the control system.

3. The automatic ultrasonic flaw detection device according to claim 1, characterized in that: The lifting device includes a connecting block, a lifting frame, a slider, and a hydraulic lifter. The lifting frame is fixedly connected to the cantilever through the connecting block. The lifting frame is provided with a slide rail. The slider is slidably connected to the slide rail. The bottom of the lifting frame is located on one side of the slide rail and the hydraulic lifter is fixedly connected to the push rod of the hydraulic lifter. The side of the slider is fixedly connected to the ultrasonic probe through a connecting rod.

4. The automatic ultrasonic flaw detection device according to claim 1, characterized in that: The ultrasonic probe is provided with a probe clamp, which includes a probe frame and a fixing frame. The probe frame is fixedly connected to the ultrasonic probe, a connecting block is provided on the outer side of the probe frame, a groove corresponding to the connecting block is provided on the inner side of the fixing frame, a plurality of evenly distributed elastic elements are provided on the top of the groove, the elastic element is fixedly connected to the connecting block, and the fixing frame is fixedly connected to the lifting device.

5. The automatic ultrasonic flaw detection device according to claim 1, characterized in that: A filter is provided at the air inlet of the negative pressure exhaust fan, and a collection box is provided at the bottom of the exhaust duct located on the side of the filter.

6. The automatic ultrasonic flaw detection device according to claim 1, characterized in that: The rear wheel of the magnetic driving wheel is a magnetic roller, and the front wheel is an encoder wheel disc. The encoder wheel disc is connected to the control system signal, and the magnetic roller is connected to the driving motor inside the shell.

7. The automatic ultrasonic flaw detection device according to claim 3, characterized in that: A third connecting rod is arranged below the cantilever, and a sponge block is arranged at the bottom of the third connecting rod.

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