Profile defect detection device and defect correction method

Abstract

The invention belongs to the technical field of welding defect detection, and particularly relates to a profile defect detection device and a defect correction method.The profile defect detection device comprises a machine body part and ultrasonic probes, the two ultrasonic probes are symmetrically arranged on the two sides of a surface welding seam of a profile to be detected through the detection device respectively, and a handle part is rotationally assembled at one end of the machine body part; the side frame parts are rotationally assembled on the two sides of the machine body part, the sliding mounting frame is assembled on one sides of the two side frame parts in a sliding mode, the assembling frame parts are detachably assembled through the sliding mounting frame, and the two ultrasonic probes are installed at the bottoms of the two assembling frame parts respectively. According to the method, the probability of detecting transverse internal defects can be increased, the defect marking function is achieved, the probe can be made to be tightly attached to the surfaces of profiles of more shapes, the probe can be prevented from colliding with irregular protrusions, and the method for correcting the multilayer repair welding is beneficial to optimizing the material strength after the internal defects are subjected to repair welding and reducing the forming probability of the repair welding defects.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding defect detection, and in particular relates to a profile defect detection device and a defect correction method. Background Art

[0002] Ultrasonic flaw detection uses the property that when ultrasonic waves propagate inside the material, they will generate reflected waves when they encounter defects. The type and location of the defect are determined by analyzing the reflected waves. It is non-contact, highly sensitive, and can detect internal defects. However, it has high technical requirements for operators and has poor adaptability to rough surfaces or irregular shapes. It is widely used in welding defect detection of various materials, especially the detection of internal defects.

[0003] Existing ultrasonic flaw detection devices still have shortcomings in detecting internal defects of profiles. For example, the sensitivity of ultrasonic detection to internal defects is limited by the direction and position of the defects. Cracks perpendicular to the beam direction are more easily detected, while cracks parallel to the beam direction or at a smaller angle may be missed. At present, the control of the ultrasonic probe is still manual holding and movement. Since it is impossible for humans to perfectly mechanically and regularly move the ultrasonic probe, the ultrasonic detection range cannot cover cracks parallel to the beam direction or at a smaller angle. It is very easy to make mistakes during the detection process, resulting in the problem of missed crack detection. Therefore, there is an urgent need for a device that can control the comprehensive and regular movement of the ultrasonic probe. Summary of the invention

[0004] The purpose of the present invention is to provide a profile defect detection device and a defect correction method, which can increase the probability of detecting lateral internal defects and has the function of defect marking, and can make the probe close to the surface of profiles of more shapes, and can also avoid the collision of the probe with irregular protrusions. The multi-layer repair welding correction method is beneficial to optimizing the material strength after internal defect repair welding and reducing the probability of formation of repair welding defects.

[0005] The technical solution adopted by the present invention is as follows: A profile defect detection device comprises a body part and an ultrasonic probe, wherein two ultrasonic probes are symmetrically placed on both sides of a weld on a surface of a profile to be detected through the detection device, one end of the body part is rotated to assemble a handle part, and both sides of the body part are rotated to assemble a side frame part, one side of the two side frame parts is slidably assembled with a sliding frame, and an assembly frame part is detachably assembled through the sliding frame, and the two ultrasonic probes are respectively installed at the bottom of the two assembly frame parts; By using two ultrasonic probes placed on both sides of the weld for cross scanning, the probability of detecting transverse internal defects is increased; The angle of the ultrasonic probe is changed by changing the angle of the side frame part, so that the ultrasonic probe can be closely attached to the surface of profiles of more shapes; By controlling the ultrasonic probe to quickly and significantly move away from the surface of the profile to be tested, it is used to avoid the ultrasonic probe from colliding with irregular protrusions.

[0006] The side frame part is rotatably assembled with the body part through a rotating rod arranged on the outer wall of one end, and a shift block is fixedly arranged on the outer wall of the side frame part near the transition point, and a transmission chain belt for adjusting the position of the sliding frame is assembled inside the side frame part, and an assembling body is fixedly arranged on one side of the outer wall of the transmission chain belt, and an assembling seat for clamping with the assembling body is fixedly arranged on the inner side of the sliding frame.

[0007] Transmission shafts are rotatably assembled on both sides of the middle part of the machine body, and the transmission shaft is connected to the active roller of the adjacent transmission chain belt through a sleeved belt 1. A gear is fixedly sleeved on the middle part of the transmission shaft, and the two gears are meshed. Motor 1 is fixedly installed inside the machine body, and the output end of motor 1 is connected to one of the transmission shafts through a sleeved belt 2.

[0008] A slot rod is symmetrically and slidingly assembled on one side of the body part, an insertion rod is integrally provided at one end of the two slot rods that are separated from each other, and a shift block is slidably inserted into the corresponding insertion rod, a screw is rotatably assembled on one side of the body part, and a screw tube is screwed on the outer surface of the screw, a through rod 1 is integrally provided on the side wall of the screw tube, and the through rod 1 can detachably penetrate the two slot rods at the same time, a bevel gear 2 is fixedly installed on the bottom end of the screw, a motor 2 is fixedly installed inside the body part, and a bevel gear 1 meshing with the bevel gear 2 is fixedly installed on the output end of the motor 2.

[0009] A second through rod is integrally provided on the outer wall of the two slot rods near one end of the insertion rod, and a double-arc slot plate is slidably assembled on one side inside the body part. The two second through rods respectively pass through the two ends of the double-arc slot plate, and a spring is connected between the side wall of the double-arc slot plate and the inner wall of the body part. A sliding block is integrally provided on the top of the double-arc slot plate and extends to the surface of the body part.

[0010] The assembly frame part includes an embedded seat and an L-shaped frame. The L-shaped frame can be detachably assembled on the outside of the ultrasonic probe, and the embedded seat can be detachably assembled on the bottom of the sliding frame. The two sides of the sliding frame are movably connected with plug-in bodies, and the outer walls on both sides of the embedded seat are provided with plug-in holes for plugging in the plug-in bodies. The inner wall of the bottom of the sliding frame is provided with a conductor 1, and the surface of the embedded seat is provided with a conductor 2 for electrically contacting and connecting with the conductor 1.

[0011] The embedded seat and the L-shaped frame are assembled through ball-jointed spring telescopic rods arranged at the four corners, and the connection points of the ball-jointed spring telescopic rods all adopt a ball-jointed structure. A cylinder is fixedly installed inside the embedded seat, a hook rod is fixedly installed on the upper surface of the L-shaped frame, and a force hook for hooking the hook rod is rotatably installed on the lower surface of the embedded seat, and the end of the telescopic output end of the cylinder is connected to the end of the force hook; A ball-end trigger rod is slidably assembled on one side of the L-shaped frame through an integrally arranged conduit, a ball is embedded and rolled on the bottom end of the ball-end trigger rod, a baffle is fixedly arranged on the side wall of the L-shaped frame, and a spring 2 is connected between the top end of the ball-end trigger rod and the baffle, a conductor 3 is fixedly arranged on the side wall of the L-shaped frame, a conductor 4 is fixedly arranged on the side wall of the top of the ball-end trigger rod, and the cylinder is started when the conductor 3 contacts the conductor 4 for conduction.

[0012] A liquid storage pen tube is integrally connected to one side of the ball-end trigger rod via a liquid tube, and an electromagnetic valve is provided at the connection between the liquid tube and the liquid storage pen tube. A push plug is assembled inside the liquid storage pen tube via a spring three-sliding assembly, and a liquid replenishing tube is fixedly provided on the outer wall of the bottom of the liquid storage pen tube.

[0013] A fixed hole is provided on the outer wall of the junction of the body part and the handle part, a locking block is slidably assembled at one end of the handle part, and the locking block can be detachably removed from the inside of the fixed hole, a battery compartment is provided on one side of the inside of the handle part, and the surface of the handle part is provided with an angle increase key and an angle decrease key for controlling the operation of motor 2, a spacing increase key and a spacing decrease key for controlling the operation of motor 1, a cylinder power-on key for controlling the power on and off of the cylinder, and a marking key for controlling the switch of the solenoid valve.

[0014] A defect correction method, characterized in that the specific steps are as follows: Step 1: For internal crack defects, first clean the surface part of the internal crack, use carbon arc air planing or mechanical planing to plan away the surface distribution and go deep into the crack until the crack is removed and the metallic luster is exposed. The planing groove bottom should be U-shaped without dead corners such as grooves. Step 2: Peel off the slag on both sides of the planing surface, and then grind it to prepare for subsequent repair welding; Step 3: Before repair welding, the gouging groove and surrounding areas should be preheated. The preheating temperature needs to be determined according to the material to be welded, the location and the specific situation, and the preheating temperature should be kept evenly rising as much as possible to avoid the generation of new defects caused by uneven temperature. Step 4: Select appropriate welding materials for repair welding, and perform post-heat treatment to eliminate the stress that may be generated during the repair welding process. The heating temperature and insulation time should be determined according to the specific requirements of the material to ensure the quality and safety of the weld; Step 5: According to the width and depth of the groove, perform multiple repair welding operations flexibly, and preheat each time. At the same time, ensure that the thickness of each repair welding is close until the groove is fully welded.

[0015] The technical effects achieved by the present invention are: The present invention uses two ultrasonic probes, which are placed on both sides of the weld for cross scanning. This method can increase the probability of detecting transverse internal defects, especially when the axes of the sound beams of the two ultrasonic probes intersect at the part to be detected, the transverse defects of the weld can be effectively detected.

[0016] The present invention changes the angle of the ultrasonic probe by changing the angle of the side frame part, so that the ultrasonic probe can be perfectly attached to the surface of profiles of more shapes, thereby improving the application range of the device.

[0017] The present invention can make the ultrasonic probe quickly and significantly move away from the surface of the profile to be tested during the process of moving the ultrasonic probe, thereby avoiding friction and collision between the surface of the ultrasonic probe and irregular protrusions on the surface of the profile, and the lifting process of the ultrasonic probe can be automatically triggered at the initial stage when the L-shaped frame is away from the profile, and the triggering process is sensitive and the structure is simple.

[0018] The device of the present invention has the function of marking defect positions, thus enriching the functions of the device.

[0019] The present invention facilitates the storage of the device after the handle part and the side frame part are folded. In addition, the buttons arranged on the surface of the handle part can control the device to complete the work of adjusting the angle of the side frame part, changing the position of the ultrasonic probe, starting the work of lifting the ultrasonic probe and marking the defect position, which is more convenient for the staff to operate the device with one hand.

[0020] The present invention performs preheating treatment on the gouging groove and the surrounding area, which can avoid the generation of new defects caused by uneven temperature, and flexibly performs multi-layer repair welding according to the width and depth of the gouging groove, which is beneficial to optimizing the material strength after the internal defect repair welding and reducing the probability of the formation of repair welding defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the use of the detection device provided by an embodiment of the present invention; Figure 2 is a structural disassembly diagram of a detection device provided by an embodiment of the present invention; Figure 3 It is an assembly and disassembly diagram of a body part and a side frame part provided by an embodiment of the present invention; Figure 4 is a disassembled view of a driving portion of a side frame portion provided by an embodiment of the present invention; Figure 5yes Figure 4 The local enlarged structure diagram at A in the middle; Figure 6 yes Figure 4 The local enlarged structure diagram at B in the middle; Figure 7 is a schematic diagram of a folded detection device provided by an embodiment of the present invention; Figure 8 is a structural diagram of an assembly rack portion provided by an embodiment of the present invention; Fig. 9 is a cross-sectional structural diagram of a liquid storage pen tube provided by an embodiment of the present invention; Fig.10 It is a step diagram of a defect correction method provided by an embodiment of the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Profile to be tested; 101. Welding seam; 2. Body; 201. Fixed hole; 202. Motor 1; 203. Transmission shaft; 204. Belt 1; 205. Gear; 206. Belt 2; 207. Motor 2; 208. Bevel gear 1; 209. Slot rod; 210. Insert rod; 211. Screw tube; 212. Through rod 1; 213. Screw rod; 214. Bevel gear 2; 215. Through rod 2; 216. Double arc slot plate; 217. Slider; 218. Spring 1; 3. Handle; 301. Lock block; 302. Angle increase key; 303. Angle decrease key; 304. Spacing increase key; 305. Spacing decrease key; 306. Cylinder power-on key; 307. Marking key; 308. Battery compartment; 4. Side frame; 4 01. Rotating rod; 402. Shifting block; 403. Transmission chain; 404. Assembling body; 405. Sliding frame; 406. Assembling seat; 407. Plug-in body; 408. Conductor one; 5. Assembly frame part; 501. Inserting seat; 502. Conductor two; 503. Plug-in hole; 504. Cylinder; 505. L-shaped frame; 506. Ball-jointed spring telescopic rod; 507. Force hook; 508. Hook rod; 509. Conduit; 510. Ball-end trigger rod; 511. Ball; 512. Conductor three; 513. Conductor four; 514. Baffle; 515. Spring two; 516. Liquid tube; 517. Liquid storage pen tube; 518. Solenoid valve; 519. Liquid infusion tube; 520. Push plug; 521. Spring three; 6. Ultrasonic probe. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0024] like Figure 1-9 As shown, a profile defect detection device includes a body part 2 and an ultrasonic probe 6. The two ultrasonic probes 6 are symmetrically placed on both sides of the weld 101 on the surface of the profile 1 to be tested through the detection device. One end of the body part 2 is rotated to assemble the handle part 3, and both sides of the body part 2 are rotated to assemble the side frame parts 4. One side of the two side frame parts 4 is slidably assembled with a sliding frame 405, and the assembly frame part 5 is detachably assembled through the sliding frame 405. The two ultrasonic probes 6 are respectively installed at the bottom of the two assembly frame parts 5.

[0025] Embodiment 1: Refer to the attached Figure 4 The side frame part 4 is rotatably assembled with the body part 2 through a rotating rod 401 arranged on the outer wall of one end, and a shift block 402 is fixedly arranged on the outer wall of the side frame part 4 near the transition point. A transmission chain belt 403 for adjusting the position of the sliding frame 405 is assembled inside the side frame part 4, and an assembling body 404 is fixedly arranged on one side of the outer wall of the transmission chain belt 403, and an assembling seat 406 for clamping with the assembling body 404 is fixedly arranged on the inner side of the sliding frame 405.

[0026] Refer to the attached Figure 4 and Figure 5 A transmission shaft 203 is rotatably assembled on both sides of the middle of the body part 2, and the transmission shaft 203 is connected to the active roller of the adjacent transmission chain belt 403 through a sleeved belt 204. A gear 205 is fixedly sleeved on the middle of the transmission shaft 203, and the two gears 205 are meshed. A motor 202 is fixedly installed inside the body part 2, and the output end of the motor 202 is connected to one of the transmission shafts 203 through a sleeved belt 206.

[0027] According to the above structure, when the control motor 1 202 rotates forward and reverse, it drives one of the transmission shafts 203 to rotate through the belt 2 206, and the other transmission shaft 203 rotates through the engagement of the two gears 205. The two transmission shafts 203 rotate in opposite directions at the same time, and drive the transmission chain 403 to operate in opposite directions through the belt 1 204. At this time, the two sliding frames 405 together with the ultrasonic probe 6 will move towards or away from each other at the same time, so as to change the distance between the two ultrasonic probes 6 and the weld 101 at the same time; the above process, by using two ultrasonic probes 6, respectively placed on both sides of the weld 101, for cross scanning, this method can increase the probability of detecting transverse internal defects, especially when the sound beam axes of the two ultrasonic probes 6 intersect at the part to be detected, the transverse defects of the weld can be effectively detected.

[0028] Refer to the attached Figure 4 and Figure 6, a groove rod 209 is symmetrically and slidably assembled on one side of the body part 2, an insertion rod 210 is integrally arranged at one end of the two groove rods 209 which are separated from each other, and the shift block 402 is slidably inserted into the corresponding insertion rod 210, a screw rod 213 is rotatably assembled on one side of the body part 2, and a screw tube 211 is screwed on the outer surface of the screw rod 213, a through rod 1 212 is integrally arranged on the side wall of the screw tube 211, and the through rod 1 212 can detachably penetrate the two groove rods 209 at the same time, a bevel gear 214 is fixedly installed on the bottom end of the screw rod 213, a motor 207 is fixedly installed inside the body part 2, and a bevel gear 1 208 meshing with the bevel gear 214 is fixedly installed on the output end of the motor 207; Refer to the attached Figure 4 and Figure 6 A second through rod 215 is integrally provided on the outer wall of the two slot rods 209 near one end of the insertion rod 210, and a double-arc slot plate 216 is slidably assembled on one side inside the body part 2. The two second through rods 215 respectively pass through the two ends of the double-arc slot plate 216, and a spring 218 is connected between the side wall of the double-arc slot plate 216 and the inner wall of the body part 2. A slider 217 is integrally provided on the top of the double-arc slot plate 216 and extends to the surface of the body part 2.

[0029] According to the above structure, when the control motor 207 rotates forward and reverse, it drives the screw 213 to rotate through the meshing of the bevel gear 1 208 and the bevel gear 214. Since the screw tube 211 is screwed to the surface of the screw rod 213, the screw tube 211 can move up and down in a straight line. Since the through rod 1 212 on the side wall of the screw tube 211 penetrates the two slot rods 209 at the same time, and the shift block 402 is inserted into the insertion rod 210 at one end of the slot rod 209, the screw tube 211 can simultaneously drive the two side frame parts 4 to rotate with the rotating rod 401 as the center of the circle when moving up and down, thereby changing the angles of the two ultrasonic probes 6 at the same time, so that they can fit the surfaces of the profiles 1 to be tested in different shapes; when the side frame parts 4 on both sides are folded and stored, as shown in FIG. Figure 7 As shown, first, it is necessary to slide the slider 217 to move the double-arc groove plate 216 and squeeze the spring 1 218, and the double-arc groove plate 216 can then drive the through rod 215 to make the shift block 402 leave the insertion rod 210, thereby separating the groove rod 209 from the side frame part 4, making it convenient for the side frame part 4 to rotate and fold. In the above process, the angle of the ultrasonic probe 6 is changed by changing the angle of the side frame part 4, so that the ultrasonic probe 6 can perfectly fit on the surface of profiles of more shapes, thereby improving the application range of the device.

[0030] The working principle of the present invention is as follows: when the control motor 1 202 rotates forward and reverse, it drives one of the transmission shafts 203 to rotate through the belt 2 206, and the other transmission shaft 203 rotates through the meshing of the two gears 205. The two transmission shafts 203 rotate in opposite directions at the same time, and the transmission chain belt 403 is driven by the belt 1 204 to operate in opposite directions. At this time, the two slide racks 405 together with the ultrasonic probe 6 will move towards or away from each other at the same time, so as to change the distance between the two ultrasonic probes 6 and the weld 101 at the same time. When the control motor 207 rotates forward and reverse, it drives the screw 213 to rotate through the meshing of the bevel gear 1 208 and the bevel gear 214. Since the screw tube 211 is screwed to the surface of the screw rod 213, the screw tube 211 can move up and down in a straight line. Since the through rod 1 212 on the side wall of the screw tube 211 penetrates the two slot rods 209 at the same time, and the shift block 402 is inserted into the insertion rod 210 at one end of the slot rod 209, the screw tube 211 can simultaneously drive the two side frame parts 4 to rotate with the rotating rod 401 as the center when moving up and down, thereby changing the angles of the two ultrasonic probes 6 at the same time, so that they can fit the surfaces of the profiles 1 to be tested with different shapes.

[0031] Embodiment 2: Refer to the attached Figure 8 The assembly frame part 5 includes an embedded seat 501 and an L-shaped frame 505. The L-shaped frame 505 is detachably assembled on the outside of the ultrasonic probe 6. The embedded seat 501 is detachably assembled on the bottom of the sliding frame 405. The two sides of the sliding frame 405 are movably plugged with plug-in bodies 407. The outer walls of the two sides of the embedded seat 501 are provided with plug-in holes 503 for plugging the plug-in bodies 407. The inner wall of the bottom of the sliding frame 405 is provided with a conductor 1 408. The surface of the embedded seat 501 is provided with a conductor 2 502 for electrically contacting and connecting with the conductor 1 408. Refer to the attached Figure 8 The embedded seat 501 and the L-shaped frame 505 are assembled by ball-jointed spring telescopic rods 506 arranged at the four corners, and the connection points of the ball-jointed spring telescopic rods 506 all adopt a ball-jointed structure. A cylinder 504 is fixedly installed inside the embedded seat 501, a hook rod 508 is fixedly installed on the upper surface of the L-shaped frame 505, and a force hook 507 for hooking the hook rod 508 is rotatably installed on the lower surface of the embedded seat 501. The end of the telescopic output end of the cylinder 504 is connected to the end of the force hook 507; Refer to the attached Figure 8A ball-end trigger rod 510 is slidably assembled on one side of the L-shaped frame 505 through an integrally arranged guide tube 509, a ball 511 is embedded and rolled on the bottom end of the ball-end trigger rod 510, a baffle 514 is fixedly arranged on the side wall of the L-shaped frame 505, and a spring 2 515 is connected between the top of the ball-end trigger rod 510 and the baffle 514, a conductor 3 512 is fixedly arranged on the side wall of the L-shaped frame 505, a conductor 4 513 is fixedly arranged on the side wall of the top of the ball-end trigger rod 510, and the cylinder 504 is started when the conductor 3 512 and the conductor 4 513 come into contact and conduct electricity.

[0032] According to the above structure, when the ultrasonic probe 6 is placed on the surface of the profile 1 to be tested, a slight pressure of the ultrasonic probe 6 on the profile surface is applied, and the angle of the ultrasonic probe 6 can be automatically fine-tuned under the elastic expansion and contraction action of the four-corner ball-jointed spring telescopic rod 506, so as to perfectly fit the profile surface; when the probe is in close contact with the profile surface, the ball 511 is also in close contact with the profile surface, and the ball-end trigger rod 510 will squeeze the spring two 515, and at this time the conductor four 513 is away from the conductor three 512. When it is necessary to lift the ultrasonic probe 6 and move it, the ball-end trigger rod 510 will move under the elastic force of the spring two 515 during the process of the L-shaped frame 505 moving away from the surface of the profile 1 to be tested, and the conductor three 512 will be moved. The electric body 4 513 will contact the conductor 3 512 and conduct electricity, and the cylinder 504 will start and contract at this time. The force hook 507 will rotate under the contraction of the cylinder 504, and the L-shaped frame 505 and the ultrasonic probe 6 will be quickly and significantly away from the surface of the profile 1 to be tested by pulling the hook rod 508; the above process can make the ultrasonic probe 6 quickly and significantly away from the surface of the profile 1 to be tested during the process of moving the ultrasonic probe 6, thereby avoiding friction and collision between the surface of the ultrasonic probe 6 and the irregular protrusions on the surface of the profile, and the lifting process of the ultrasonic probe 6 can be automatically triggered at the initial stage when the L-shaped frame 505 is away from the profile, and the triggering process is sensitive and the structure is simple.

[0033] The working principle of the present invention is as follows: when the ultrasonic probe 6 is placed on the surface of the profile 1 to be tested, a slight pressure is applied to the profile surface by the ultrasonic probe 6. Under the elastic expansion and contraction action of the four-corner ball-jointed spring telescopic rod 506, the angle of the ultrasonic probe 6 can be automatically fine-tuned, so as to perfectly fit the profile surface; when the probe is in close contact with the profile surface, the ball 511 is also in close contact with the profile surface, and the ball-end trigger rod 510 will squeeze the spring two 515, and at this time the conductor four 513 is away from the conductor three 512. When it is necessary to lift the ultrasonic probe 6 and move it, in the process of the L-shaped frame 505 being away from the surface of the profile 1 to be tested, the ball-end trigger rod 510 will move under the elastic force of the spring two 515, and the conductor four 513 will contact and conduct electricity with the conductor three 512, and at this time the cylinder 504 will start and retract, and the force hook 507 will rotate under the contraction of the cylinder 504, and by pulling the hook rod 508, the L-shaped frame 505 and the ultrasonic probe 6 will be quickly and significantly away from the surface of the profile 1 to be tested.

[0034] Embodiment three: Refer to the attached Figure 8 and Fig. 9 A liquid storage pen tube 517 is integrally connected to one side of the ball-end trigger rod 510 through a liquid tube 516, and a solenoid valve 518 is provided at the connection between the liquid tube 516 and the liquid storage pen tube 517. A push plug 520 is slidably assembled inside the liquid storage pen tube 517 through a spring three 521, and a liquid replenishing tube 519 is fixedly provided on the outer wall of the bottom of the liquid storage pen tube 517.

[0035] According to the above structure, when it is necessary to mark the defective position, it is only necessary to open the solenoid valve 518, and the push plug 520 can push the marking liquid under the elastic force of the spring three 521. At this time, the marking liquid will be injected into the liquid tube 516 and finally flow to the surface of the ball 511, so as to realize the marking of the defective position. The above process enables the device to have the function of marking the defective position, enriching the function of the device.

[0036] Refer to the attached Figure 3 A fixing hole 201 is provided on the outer wall of the junction of the body part 2 and the handle part 3, a locking block 301 is slidably assembled at one end of the handle part 3, and the locking block 301 can be detachably removed into the inside of the fixing hole 201, a battery compartment 308 is provided on one side of the inside of the handle part 3, and the surface of the handle part 3 is provided with an angle increase key 302 and an angle decrease key 303 for controlling the operation of the motor 2 207, a spacing increase key 304 and a spacing decrease key 305 for controlling the operation of the motor 1 202, a cylinder power-on key 306 for controlling the power on and off of the cylinder 504, and a marking key 307 for controlling the switch of the solenoid valve 518.

[0037] According to the above structure, the process of controlling the locking block 301 to be inserted into the fixed hole 201 can facilitate the rotation and folding of the handle part 3. After both the handle part 3 and the side frame part 4 are folded, it is more convenient for the storage of the device. In addition, the buttons arranged on the surface of the handle part 3 can control the device to complete the angle adjustment of the side frame part 4, change the position of the ultrasonic probe 6, start the lifting of the ultrasonic probe 6 and mark the defect position, which is more convenient for the staff to operate the device with one hand.

[0038] like Fig.10 As shown, a defect correction method, the specific steps are as follows: Step 1: For internal crack defects, first clean the surface part of the internal crack, use carbon arc air planing or mechanical planing to plan away the surface distribution and go deep into the crack until the crack is removed and the metallic luster is exposed. The planing groove bottom should be U-shaped without dead corners such as grooves. Step 2: Peel off the slag on both sides of the planing surface, and then grind it to prepare for subsequent repair welding; Step 3: Before repair welding, the gouging groove and surrounding areas should be preheated. The preheating temperature needs to be determined according to the material to be welded, the location and the specific situation, and the preheating temperature should be kept evenly rising as much as possible to avoid the generation of new defects caused by uneven temperature. Step 4: Select appropriate welding materials for repair welding, and perform post-heat treatment to eliminate the stress that may be generated during the repair welding process. The heating temperature and insulation time should be determined according to the specific requirements of the material to ensure the quality and safety of the weld; Step 5: According to the width and depth of the groove, perform multiple repair welding operations flexibly, and preheat each time. At the same time, ensure that the thickness of each repair welding is close until the groove is fully welded.

[0039] The advantages of this method are: preheating the groove and surrounding areas can avoid the generation of new defects caused by uneven temperature, and flexible multi-layer repair welding can be carried out according to the width and depth of the groove, which is beneficial to optimize the material strength after internal defect repair welding and reduce the probability of repair welding defects.

[0040] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A profile defect detection device, comprising a body portion (2) and an ultrasonic probe (6), characterized in that: The two ultrasonic probes (6) are symmetrically placed on both sides of the weld (101) on the surface of the profile (1) to be tested through the detection device; one end of the body part (2) is rotatably assembled with the handle part (3); both sides of the body part (2) are rotatably assembled with the side frame parts (4); one side of the two side frame parts (4) is slidably assembled with a sliding frame (405); and the assembly frame part (5) is detachably assembled with the sliding frame (405); the two ultrasonic probes (6) are respectively mounted on the bottom of the two assembly frame parts (5); By using two ultrasonic probes (6) placed on both sides of the weld (101) respectively, cross scanning is performed to increase the probability of detecting transverse internal defects; The angle of the ultrasonic probe (6) is changed by changing the angle of the side frame part (4), so that the ultrasonic probe (6) can be closely attached to the surface of profiles of more shapes; By controlling the ultrasonic probe (6) to quickly and significantly move away from the surface of the profile (1) to be tested, collision between the ultrasonic probe (6) and the irregular protrusions can be avoided.

2. A profile defect detection device according to claim 1, characterized in that: The side frame part (4) is rotatably assembled with the body part (2) via a rotating rod (401) arranged on the outer wall of one end, and a shift block (402) is fixedly arranged on the outer wall of the side frame part (4) near the transition point, a transmission chain belt (403) for adjusting the position of the sliding frame (405) is assembled inside the side frame part (4), an assembly body (404) is fixedly arranged on one side of the outer wall of the transmission chain belt (403), and an assembly seat (406) for clamping with the assembly body (404) is fixedly arranged on the inner side of the sliding frame (405).

3. A profile defect detection device according to claim 2, characterized in that: Transmission shafts (203) are rotatably assembled on both sides of the middle of the machine body (2), and the transmission shaft (203) is connected to the driving roller of the adjacent transmission chain belt (403) through a sleeved belt 1 (204). A gear (205) is fixedly sleeved on the middle of the transmission shaft (203), and the two gears (205) are meshed. A motor 1 (202) is fixedly installed inside the machine body (2), and the output end of the motor 1 (202) is connected to one of the transmission shafts (203) through a sleeved belt 2 (206).

4. A profile defect detection device according to claim 3, characterized in that: A grooved rod (209) is symmetrically slidably assembled on one side of the body part (2), an insertion rod (210) is integrally arranged at one end of the two grooved rods (209) that are separated from each other, and a shifting block (402) is slidably inserted into the corresponding insertion rod (210), a screw rod (213) is rotatably assembled on one side of the body part (2), and a screw tube (211) is screwed on the outer surface of the screw rod (213), a through rod (212) is integrally arranged on the side wall of the screw tube (211), and the through rod (212) can detachably penetrate the two grooved rods (209), a bevel gear (214) is fixedly installed on the bottom end of the screw rod (213), a motor (207) is fixedly installed inside the body part (2), and a bevel gear (208) meshing with the bevel gear (214) is fixedly installed on the output end of the motor (207).

5. A profile defect detection device according to claim 4, characterized in that: A second through rod (215) is integrally provided on the outer wall of the two slot rods (209) near one end of the insertion rod (210), a double-arc slot plate (216) is slidably assembled on one side inside the body part (2), the two second through rods (215) respectively penetrate through both ends of the double-arc slot plate (216), a spring (218) is connected between the side wall of the double-arc slot plate (216) and the inner wall of the body part (2), and a sliding block (217) is integrally provided on the top of the double-arc slot plate (216) and extending to the surface of the body part (2).

6. A profile defect detection device according to claim 5, characterized in that: The assembly frame part (5) comprises an embedded seat (501) and an L-shaped frame (505), wherein the L-shaped frame (505) is detachably assembled on the outside of the ultrasonic probe (6), and the embedded seat (501) is detachably assembled on the bottom of the sliding frame (405), and plug-in bodies (407) are movably plugged into the two sides of the sliding frame (405), and the outer walls on both sides of the embedded seat (501) are provided with plug-in holes (503) for plugging in the plug-in bodies (407), and the inner wall of the bottom of the sliding frame (405) is provided with a conductor 1 (408), and the surface of the embedded seat (501) is provided with a conductor 2 (502) for electrically contacting and connecting with the conductor 1 (408).

7. A profile defect detection device according to claim 6, characterized in that: The embedded seat (501) and the L-shaped frame (505) are assembled via ball-jointed spring telescopic rods (506) arranged at four corners, and the connection points of the ball-jointed spring telescopic rods (506) all adopt a ball-jointed structure. A cylinder (504) is fixedly installed inside the embedded seat (501), a hook rod (508) is fixedly installed on the upper surface of the L-shaped frame (505), and a force hook (507) for hooking the hook rod (508) is rotatably installed on the lower surface of the embedded seat (501), and the end of the telescopic output end of the cylinder (504) is connected to the end of the force hook (507); A ball-end trigger rod (510) is slidably assembled on one side of the L-shaped frame (505) through an integrally arranged conduit (509); a ball (511) is embedded and rollingly mounted on the bottom end of the ball-end trigger rod (510); a baffle (514) is fixedly arranged on the side wall of the L-shaped frame (505); a spring 2 (515) is connected between the top end of the ball-end trigger rod (510) and the baffle (514); a conductor 3 (512) is fixedly arranged on the side wall of the L-shaped frame (505); a conductor 4 (513) is fixedly arranged on the side wall of the top of the ball-end trigger rod (510); and the cylinder (504) is activated when the conductor 3 (512) contacts the conductor 4 (513) to conduct electricity.

8. A profile defect detection device according to claim 7, characterized in that: A liquid storage pen tube (517) is integrally connected to one side of the ball-end trigger rod (510) via a liquid tube (516), and a solenoid valve (518) is provided at the connection between the liquid tube (516) and the liquid storage pen tube (517). A push plug (520) is slidably assembled inside the liquid storage pen tube (517) via a spring three (521), and a liquid replenishing tube (519) is fixedly provided on the outer wall of the bottom of the liquid storage pen tube (517).

9. A profile defect detection device according to claim 8, characterized in that: A fixing hole (201) is provided on the outer wall of the junction between the body part (2) and the handle part (3); a locking block (301) is slidably assembled at one end of the handle part (3), and the locking block (301) can be detachably removed from the inside of the fixing hole (201); a battery compartment (308) is provided on one side of the inside of the handle part (3); and an angle increase key (302) and an angle decrease key (303) for controlling the operation of the second motor (207), a spacing increase key (304) and a spacing decrease key (305) for controlling the operation of the first motor (202), a cylinder power-on key (306) for controlling the power on and off of the cylinder (504), and a marking key (307) for controlling the switch of the solenoid valve (518) are provided on the surface of the handle part (3).

10. A defect correction method, characterized in that: The specific steps are as follows: Step 1: For internal crack defects, first clean the surface part of the internal crack, use carbon arc air planing or mechanical planing to plan away the surface distribution and go deep into the crack until the crack is removed and the metallic luster is exposed. The planing groove bottom should be U-shaped without dead corners such as grooves. Step 2: Peel off the slag on both sides of the planing surface, and then grind it to prepare for subsequent repair welding; Step 3: Before repair welding, the gouging groove and surrounding areas should be preheated. The preheating temperature needs to be determined according to the material to be welded, the location and the specific situation, and the preheating temperature should be kept evenly rising as much as possible to avoid the generation of new defects caused by uneven temperature. Step 4: Select appropriate welding materials for repair welding, and perform post-heat treatment to eliminate the stress that may be generated during the repair welding process. The heating temperature and insulation time should be determined according to the specific requirements of the material to ensure the quality and safety of the weld; Step 5: According to the width and depth of the groove, perform multiple repair welding operations flexibly, and preheat each time. At the same time, ensure that the thickness of each repair welding is close until the groove is fully welded.

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