Welding seam flaw detection and marking device

Abstract

The invention relates to a welding seam flaw detection and marking device, which belongs to the technical field of welding pipe welding seam detection, and comprises a shell cylinder with one end being an opening as a front end and the other end being a rear end; the track positioning ring is fixedly mounted in the shell cylinder; the front supporting disc is rotatably mounted on the track positioning ring; the U-shaped suspension bracket is fixedly installed on the side edge of the front supporting disc and extends out of the front end of the shell cylinder. According to the welding seam flaw detection and marking device provided by the scheme, the automation and high precision of welding seam detection are realized through the design of a mechanical structure and the matching of an electrical control system, the manual operation and intervention are reduced, the detection speed is accelerated, an operator does not need to hold a probe to frequently move, the workload is reduced, and the working efficiency is improved. Real-time collection and remote monitoring of detection data are achieved through the wireless transmission technology, subsequent data analysis and quality management are facilitated, and the intelligent level of production management is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of weld pipe weld detection, and in particular relates to a weld flaw detection and marking device. Background Art

[0002] According to different measuring principles, flaw detectors can be divided into: digital ultrasonic flaw detectors, ultrasonic flaw detectors, magnetic particle flaw detectors, eddy current flaw detectors, X-ray flaw detectors and fluorescent flaw detectors. They are mainly used to detect whether there are defects (cracks, sand holes, pores, white spots, inclusions, etc.) inside machined parts, whether the welds are qualified, and whether there are hidden flaws, so as to determine whether the workpiece is qualified or not.

[0003] In the related art, for flaw detection of some pipes with smaller diameter and weight, they are usually placed on equipment and subjected to rotational flaw detection. The pipe rotates relative to the ultrasonic probe device and moves in the axial direction, and the flaw detection of the pipe is completed in this process.

[0004] When inspecting spiral welded pipes with larger diameters, the operator needs to hold a flaw detector and a probe, press the probe on the spiral welded pipe, and move the probe back and forth at the weld position to inspect the weld position. When the handheld probe is rubbed on the spiral welded pipe, the movement of the probe is very unstable, and it is easy to deviate from the inspection position or the probe may deviate from the inspection surface, affecting the inspection results. In addition, it is laborious to frequently move the handheld probe back and forth for inspection. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a weld flaw detection and marking device.

[0006] A weld flaw detection and marking device, comprising:

[0007] An outer shell tube, one end of which is open as a front end and the other end is a rear end;

[0008] A track positioning ring, fixedly installed in the outer shell;

[0009] A front supporting disc rotatably mounted on the track positioning ring;

[0010] A U-shaped suspension frame, fixedly mounted on the side of the front support disc and extending to the outside of the front end of the outer shell;

[0011] A sliding plate is arranged outside the front end of the outer shell and is slidably connected to the U-shaped suspension frame;

[0012] An assembly plate, fixedly mounted on one end of the sliding plate;

[0013] A self-powered control box, arranged on one side of the assembly plate;

[0014] An ultrasonic detector, fixedly mounted on the self-powered control box, for detecting the weld seam of the welded pipe;

[0015] Among them, a circuit board is provided in the self-powered control box, and the circuit board is connected to the ultrasonic detector to enable external terminal control. The circuit board is provided with a signal processing module and a power control module, a signal wireless receiving module and a signal wireless transmitting module connected to the signal processing module.

[0016] The outer shell cylinder is provided with a retractable walking mechanism, and the retractable walking mechanism includes a rear supporting disc fixedly installed in the outer shell cylinder, and the rear supporting disc is located between the front supporting disc and the rear end of the outer shell cylinder, and two rotating central shafts are rotatably installed on the rear supporting disc, and transverse screws are fixedly installed at both ends of the two rotating central shafts, and rack plates are threadedly sleeved on the four transverse screws, and four groups of rectangular guide grooves are opened on the inner wall of the outer shell cylinder, and rectangular guide bars are fixedly installed on the four rack plates, and the two ends of the four rectangular guide bars extend into the corresponding rectangular guide grooves respectively and can slide along the rectangular guide grooves, and four supporting long shafts are rotatably installed in the outer shell cylinder, and residual gears are fixedly sleeved on the four supporting long shafts, and the four residual gears are respectively meshed with the corresponding rack plates, and two adjusting openings are opened on the corresponding two sides of the outer shell cylinder, and support legs are installed through the four adjusting openings, and the four support legs are respectively fixedly connected with the corresponding residual gears, and walking wheels can be rotatably installed on the four support legs.

[0017] A travel motor is fixedly mounted on at least one of the support legs, and sprockets are fixedly mounted on the output shaft of the travel motor and the side corresponding to the travel wheel, and the same chain is sleeved on the two sprockets.

[0018] A bearing plate 1 is fixedly installed in the outer shell cylinder, an expansion motor is fixedly installed on the bearing plate 1, a power spindle is rotatably installed on the rear support disc, an output shaft of the expansion motor is fixedly connected to one end of the power spindle, a driving pulley is fixedly sleeved on the power spindle, driven pulleys are fixedly sleeved on the two rotating central shafts, and the driving pulley and the two driven pulleys are sleeved with the same toothed belt.

[0019] The diameter ratio of the driving pulley and the driven pulley is .~:, the wrap angle between the toothed belt and the driving pulley and the driven pulley is >°, and a tensioning pulley is provided in the outer shell cylinder for tensioning the toothed belt.

[0020] A battery pack is also provided in the self-powered control box, and the battery pack is connected to the circuit board and the ultrasonic detector. A detachable inspection panel is provided on at least one side of the self-powered control box.

[0021] When the rack plate slides, the angle of driving the residual gear to rotate is adapted to the angle of rotation of the support leg along the adjustment opening, and the sliding distance of the rectangular guide bar along the rectangular guide groove is equal to the sliding distance of the rack plate driven by the transverse screw.

[0022] The outer rings of the plurality of travel wheels are all covered with a rubber layer, and the thickness of the rubber layer is greater than cm.

[0023] A power controller is arranged in the outer shell tube, and a cable connector is arranged at the rear end of the outer shell tube. The cable connector is connected to the travel motor and the expansion motor through the power controller.

[0024] The travel motor and the expansion motor are both connected to the circuit board.

[0025] The beneficial effects of the present invention are:

[0026] Compared with the existing technology, this solution realizes the automation and high precision of weld detection through the design of mechanical structure and the coordination of electrical control system, reduces manual operation and intervention, speeds up the detection speed, and improves the overall efficiency of the production line; operators do not need to frequently move the handheld probe, which reduces the workload, improves the working environment, reduces the exposure time of operators in dangerous environments, and improves work safety; through wireless transmission technology, the real-time collection and remote monitoring of detection data are realized, which facilitates subsequent data analysis and quality management, and improves the intelligent level of production management;

[0027] At the same time, the expansion motor is used to provide power for the position adjustment of the support legs, sliding plates and ultrasonic detectors, making them more synchronized and more convenient in overall operation. The walking motor drives the walking wheels to move automatically, and with intelligent remote control, the operation is more labor-saving. The rotary motor drives the sliding plates and ultrasonic detectors at the front to rotate for detection. The detection is more comprehensive and fast, and the uniformity is also good. Through the synergy of the reversing motor and the reversing shaft, the flexible reversing of the detection head is realized, which improves the comprehensiveness and accuracy of the detection. At the same time, the addition of the electric telescopic rod and the marking piece realizes the automatic marking function, reducing the tediousness and errors of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a rear-view stereoscopic structural schematic diagram of a weld flaw detection and marking device provided by the present invention;

[0029] Figure 2 It is a front-view stereoscopic structural schematic diagram of a weld flaw detection and marking device provided by the present invention;

[0030] Figure 3 This is a schematic diagram of the internal rear-view stereoscopic structure of the present invention after the outer shell tube is removed;

[0031] Figure 4This is a schematic diagram of the internal front-view stereoscopic structure of the present invention after the outer shell tube is removed;

[0032] Figure 5 It is a schematic diagram of the main cross-sectional structure of the invention;

[0033] Figure 6 for Figure 5 An enlarged structural diagram of part A shown in FIG.

[0034] Figure 7 for Figure 5 An enlarged schematic diagram of the structure of part B shown in FIG.

[0035] Figure 8 for Figure 5 An enlarged schematic diagram of the structure of part C shown in FIG.

[0036] Fig. 9 for Figure 5 An enlarged structural diagram of part D shown in FIG.

[0037] Fig.10 It is a schematic diagram of the structure of the track round seat and the inclined support arm in the present invention;

[0038] Fig.11 It is a schematic diagram of the structure of the track positioning ring, the front supporting disc, the telescopic screw, the driving gear and the transmission gear ring in the present invention;

[0039] Fig.12 A connection logic diagram of each component controlled by the circuit board of the present invention;

[0040] Fig.13 It is a schematic diagram of the structure of the circuit board in the present invention.

[0041] in,

[0042] 1-outer shell, 2-track positioning ring, 3-front support disc, 4-U-type suspension frame, 5-sliding plate, 6-assembly plate, 7-self-powered control box, 8-ultrasonic detector, 9-rear support disc, 10-rotating central axis, 11-transverse screw, 12-rack plate, 13-rectangular guide groove, 14-rectangular guide bar, 15-support long axis, 16-residual gear, 17-adjustment port, 18-support leg, 19-travel wheel, 20-travel motor, 21-sprocket, 22-chain, 23-bearing plate 1, 24-extension motor, 25-power spindle, 26-driving pulley, 27-driven pulley, 28-toothed belt, 29- Central support disc, 30-avoidance hole, 31-telescopic screw, 32-track round seat, 33-adjustment guide port, 34-adjustment guide plate, 35-support plate, 36-rotating seat, 37-hinge seat, 38-oblique support arm, 39-rectangular opening, 40-correction rectangular rod, 41-power transmission shaft, 42-circular gear one, 43-circular gear two, 44-bearing plate two, 45-rotating motor, 46-power countershaft, 47-driving gear, 48-transmission gear ring, 49-reversing motor, 50-reversing shaft, 51-electric telescopic rod one, 52-marking piece, 53-electric telescopic rod two, 54-pre-support seat, 55-handle frame. DETAILED DESCRIPTION

[0043] In order to better explain the present invention and facilitate understanding, the technical solutions and effects of the present invention are described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0044] like Figure 1-13 As shown, a weld flaw detection and marking device provided in this embodiment includes an outer shell tube 1, one end of which is open as the front end and the other end is the rear end; a track positioning ring 2, fixedly mounted in the outer shell tube 1; a front support disc 3, rotatably mounted on the track positioning ring 2; a U-shaped suspension frame 4, fixedly mounted on the side of the front support disc 3 and extending to the outside of the front end of the outer shell tube 1; a sliding plate 5, arranged outside the front end of the outer shell tube 1 and slidably connected to the U-shaped suspension frame 4; an assembly plate 6, fixedly mounted on one end of the sliding plate 5; a self-powered control box 7, arranged on one side of the assembly plate 6; an ultrasonic detector 8, fixedly mounted on the self-powered control box 7, for detecting the weld of the welded pipe; wherein a circuit board is provided in the self-powered control box 7, the circuit board is connected to the ultrasonic detector 8 so as to be controlled by an external terminal, and a signal processing module and a power control module, a signal wireless receiving module and a signal wireless transmitting module connected to the signal processing module are provided on the circuit board.

[0045] In this embodiment, when in use, the device is placed into the spiral welded pipe so that the weld is within the detection range of the ultrasonic detector 8. After starting the device, the front support disc 3 rotates under the guidance of the track positioning ring 2, driving the U-shaped suspension frame 4 and the sliding plate 5 to move along the weld track. By adjusting the position of the sliding plate 5 on the U-shaped suspension frame 4, the ultrasonic detector 8 can accurately scan and detect the weld. During the detection process, the circuit board in the self-powered control box 7 controls the operation of the ultrasonic detector 8, and after the collected weld information is processed by the signal processing module, it is transmitted to the remote receiving device using the signal wireless transmission module, and the operator controls it through the terminal.

[0046] The outer shell cylinder 1 serves as a supporting frame, the track positioning ring 2 ensures the rotation accuracy, the combination of the front supporting disc 3 and the U-shaped suspension frame 4 realizes the compound movement of rotation and sliding, and the assembly plate 6 on the sliding plate 5 and the self-powered control box 7 carry the ultrasonic detector 8 for weld detection.

[0047] The circuit board in the self-powered control box 7 integrates a power control module, a signal processing module, a signal wireless receiving module and a signal wireless transmitting module. The power control module supplies power to the system, the signal processing module processes the weld information collected by the ultrasonic detector 8, and the signal wireless receiving and transmitting module realizes the remote transmission of the detection data.

[0048] Through the design of mechanical structure and the coordination of electrical control system, this solution realizes the automation and high precision of weld detection, reduces manual operation and intervention, speeds up detection, and improves the overall efficiency of the production line. Operators do not need to frequently move the handheld probe, which reduces the workload, improves the working environment, reduces the exposure time of operators in dangerous environments, and improves work safety. Wireless transmission technology is used to realize real-time collection and remote monitoring of detection data, which facilitates subsequent data analysis and quality management, and improves the level of intelligent production management.

[0049] In a further preferred embodiment of the present invention, the outer shell 1 is provided with a retractable walking mechanism, which includes a rear support disc 9 fixedly mounted in the outer shell 1, the rear support disc 9 being located between the front support disc 3 and the rear end of the outer shell 1, two rotating central shafts 10 being rotatably mounted on the rear support disc 9, both ends of the two rotating central shafts 10 being fixedly mounted with transverse screws 11, four transverse screws 11 being threadedly sleeved with rack plates 12, four groups of rectangular guide grooves 13 being opened on the inner wall of the outer shell 1, rectangular guide bars 14 being fixedly mounted on the four rack plates 12, the two ends of the four rectangular guide bars 14 extending into the corresponding rectangular guide grooves 13 respectively and being slidable along the rectangular guide grooves 13. Four supporting long shafts 15 are rotatably mounted in the outer shell 1, the four supporting long shafts 15 being fixedly sleeved with residual gears 16, and the four residual gears 16 are respectively meshed with the corresponding rack plates 12. Two adjustment openings 17 are provided on the corresponding sides of the outer shell tube 1, and support legs 18 are installed through the four adjustment openings 17. The four support legs 18 are respectively fixedly connected to the corresponding residual gears 16, and walking wheels 19 are rotatably installed on the four support legs 18.

[0050] In this embodiment, when it is necessary to move the device into the spiral welded pipe for inspection, the retractable walking mechanism is first started. By controlling the rotation of the rotating central axis 10, the transverse screw 11 is driven to rotate. Since the transverse screw 11 is threadedly connected to the rack plate 12, the rack plate 12 will move along the axial direction of the transverse screw 11. At the same time, the rectangular guide bar 14 on the rack plate 12 slides in the rectangular guide groove 13 to ensure that the linear motion of the rack plate 12 is stable and accurate. The movement of the rack plate 12 is converted into the rotation of the supporting long shaft 15 through the meshing action of the residual gear 16, and then drives the supporting leg 18 to extend along the adjustment port 17 until the walking wheel 19 contacts the inner wall of the welded pipe and stabilizes. At this time, the device can move freely on the inner wall of the welded pipe through the walking wheel 19 to reach the welded pipe inspection position.

[0051] The retractable walking mechanism utilizes the mechanical principle of converting rotary motion into linear motion. The telescopic adjustment of the support leg 18 is realized through the cooperation of the rotating central axis 10, the transverse screw 11, the rack plate 12, the rectangular guide groove 13 and the rectangular guide bar 14. At the same time, the meshing relationship between the residual gear 16 and the rack plate 12 ensures the smooth and reliable power transmission. When the support leg 18 is extended and the walking wheel 19 is installed, the device can move on the inner wall of the welded pipe through the walking wheel 19 to meet the movement requirements during the detection process.

[0052] The device adopts a retractable walking mechanism design, which enables the device to move quickly to the detection position and be quickly retracted after the detection is completed, thereby improving the flexibility and convenience of the entire detection process.

[0053] In a further preferred embodiment of the present invention, a travel motor 20 is fixedly mounted on at least one of the support legs 18, a sprocket 21 is fixedly mounted on the output shaft of the travel motor 20 and the side of the corresponding travel wheel 19, and the two sprockets 21 are sleeved with the same chain 22.

[0054] In this embodiment, the travel motor 20 is fixedly installed on at least one supporting leg 18 and the transmission mechanism of the sprocket 21 and the chain 22 is used to realize the automatic driving of the travel wheel 19.

[0055] When the device needs to be moved to the spiral welded pipe for inspection, the travel motor 20 is first started. The output shaft of the travel motor 20 drives a sprocket 21 to rotate. Since the two sprockets 21 are connected by the same chain 22, the other sprocket 21 will also rotate synchronously. The rotation of the sprocket 21 then drives the corresponding travel wheel 19 to rotate, thereby driving the entire device to move.

[0056] The travel motor 20 in this embodiment is used as a power source, and transmits power to the travel wheel 19 through a chain transmission mechanism composed of a sprocket 21 and a chain 22. The chain transmission has the advantages of simple structure, stable transmission, and strong bearing capacity, and is suitable for the travel drive requirements of the present invention. After obtaining power, the travel wheel 19 can move stably and automatically.

[0057] In a further preferred embodiment of the present invention, a bearing plate 23 is fixedly installed in the outer shell tube 1, an expansion motor 24 is fixedly installed on the bearing plate 23, a power spindle 25 is rotatably installed on the rear support disc 9, the output shaft of the expansion motor 24 is fixedly connected to one end of the power spindle 25, a driving pulley 26 is fixedly sleeved on the power spindle 25, and driven pulleys 27 are fixedly sleeved on the two rotating central shafts 10, and the driving pulley 26 and the two driven pulleys 27 are sleeved with the same toothed belt 28.

[0058] In this embodiment, a power transmission system is constructed by installing a bearing plate 23, an expansion motor 24, a power spindle 25, a driving pulley 26, a driven pulley 27 and a toothed belt 28 in the outer shell tube 1, which is used to drive the rotating central axis 10 and the subsequent walking and sliding adjustment of the sliding plate 5.

[0059] When it is necessary to start or adjust the position of the retractable walking mechanism and the sliding plate 5, the expansion motor 24 is started first. The output shaft of the expansion motor 24 drives the power main shaft 25 to rotate, and the driving pulley 26 on the power main shaft 25 rotates accordingly. Since the driving pulley 26 is connected to the two driven pulleys 27 by a toothed belt 28, the driven pulleys 27 will also rotate synchronously. The rotation of the driven pulley 27 further drives the rotating central axis 10 to rotate, thereby realizing the corresponding actions of the subsequent mechanisms including the transverse screw 11, the rack plate 12, etc., and at the same time, the position of the sliding plate 5 is adjusted synchronously, so that the ultrasonic detector 8 and the walking wheel 19 are synchronously expanded.

[0060] In a further preferred embodiment of the present invention, the diameter ratio of the driving pulley 26 to the driven pulley 27 is 1.5 to 2:1, the wrap angle of the toothed belt 28 with the driving pulley 26 and the driven pulley 27 is greater than 120°, and a tensioning pulley is provided in the outer shell 1 for tensioning the toothed belt 28.

[0061] In this embodiment, after the expansion motor 24 is started, the power is transmitted to the toothed belt 28 through the driving pulley 26 and the driven pulley 27 with optimized diameter ratio, so as to realize the synchronous adjustment of the rotation of the rotating central shaft 10. The toothed belt 28 maintains appropriate tension under the action of the tensioning wheel to ensure the stability and reliability of the transmission.

[0062] In a further preferred embodiment of the present invention, a battery pack is further provided in the self-powered control box 7, and the battery pack is connected to the circuit board and the ultrasonic detector 8. A detachable inspection panel is provided on at least one side of the self-powered control box 7.

[0063] In this embodiment, before using the device, ensure that the battery pack in the self-powered control box 7 is fully charged and properly connected to the circuit board and the ultrasonic detector 8. The device is controlled by a remote controller to start the ultrasonic detector 8 for detection. When it is necessary to inspect the inside of the self-powered control box 7, the internal components can be easily accessed by removing the inspection panel.

[0064] The battery pack serves as an energy storage device to provide the required electrical energy for the circuit board and the ultrasonic detector 8. The circuit board is responsible for controlling the logic and timing of the entire detection process to ensure that the ultrasonic detector 8 can work according to the predetermined program. The ultrasonic detector 8 uses the reflection principle of ultrasonic waves to detect the weld of the spiral welded pipe and transmits the detection data back to the circuit board for processing. The detachable inspection panel design makes it easy to clean, replace batteries or perform maintenance on the inside of the self-powered control box 7 when necessary.

[0065] In a further preferred embodiment of the present invention, the angle of rotation of the driving residual gear 16 when the rack plate 12 slides is adapted to the angle of rotation of the support leg 18 along the adjustment opening 17, and the sliding distance of the rectangular guide bar 14 along the rectangular guide groove 13 is equal to the sliding distance of the rack plate 12 driven by the transverse screw 11.

[0066] In this embodiment, by precisely designing the interaction between the rack plate 12, the residual gear 16, the support leg 18, the rectangular guide bar 14 and the rectangular guide groove 13, a high degree of coordination and precise control of the device during contraction and expansion is achieved.

[0067] When the device needs to be adjusted to accommodate spiral welded pipes of different diameters, the traverse screw 11 is driven to rotate. The rotation of the traverse screw 11 pushes the rack plate 12 to slide in the horizontal direction. Since the rack plate 12 is meshed with the residual gear 16, the sliding of the rack plate 12 will drive the residual gear 16 to rotate. The rotation angle of the residual gear 16 is matched with the rotation angle of the support leg 18 along the adjustment port 17, thereby ensuring that the support leg 18 can be smoothly expanded or retracted. At the same time, the sliding of the rectangular guide bar 14 in the rectangular guide groove 13 is synchronized with the sliding of the rack plate 12, ensuring the stability of the entire walking mechanism.

[0068] In a further preferred embodiment of the present invention, the outer rings of the plurality of traveling wheels 19 are all covered with a rubber layer, and the thickness of the rubber layer is greater than 1 cm.

[0069] In this embodiment, by coating the outer ring of the running wheel 19 with a rubber layer having a thickness of more than 1 cm, the adaptability and performance of the device in various usage environments are significantly improved.

[0070] Without changing the usage method, the rubber layer of the walking wheel 19 naturally contacts and adapts to the ground or spiral welded pipe surface during the movement of the device. Its increased thickness and material characteristics make the device more stable and quiet when moving, and have a better protection effect on the contact surface.

[0071] The main function of the rubber layer is to increase the friction coefficient between the running wheel 19 and the contact surface, while providing a buffering and shock-absorbing effect. The design of a thickness of more than 1 cm not only enhances the wear resistance and prolongs the service life of the running wheel 19, but also enables the device to maintain stable mobility on uneven or rough surfaces. In addition, the material properties of the rubber layer also help reduce noise and improve comfort.

[0072] In a further preferred embodiment of the present invention, a power controller is provided in the outer shell tube 1, and a cable connector is provided at the rear end of the outer shell tube 1, and the cable connector is connected to the travel motor 20 and the expansion motor 24 through the power controller.

[0073] In this embodiment, the power controller added in the outer shell tube 1 and the cable connector at the rear end together constitute an efficient power management system, providing a stable and controllable power supply for key components such as the travel motor 20 and the expansion motor 24.

[0074] The user connects the cable to the cable connector at the rear end of the outer shell 1 through an external power source, and the power is then distributed to the components that need power, such as the travel motor 20 and the expansion motor 24, through the power controller. The power controller intelligently distributes and adjusts the power according to preset parameters or external instructions to ensure that each component operates in the optimal working state.

[0075] In a further preferred embodiment of the present invention, the travel motor 20 and the expansion motor 24 are both connected to the circuit board.

[0076] In this embodiment, the circuit board serves as the control core and is responsible for receiving, processing and sending control signals. The direct connection between the circuit board and the travel motor 20 and the expansion motor 24 ensures fast and accurate transmission of control signals. The circuit board adjusts the motor's voltage, current and other parameters according to the control instructions to achieve precise control of the motor's speed, direction and torque.

[0077] In order to further improve the use effect of the device, in addition to the above scheme, this scheme also has the following embodiments:

[0078] In another embodiment of the present invention, a central support disc 29 is fixedly installed in the outer shell tube 1, and the central support disc 29 is located between the front support disc 3 and the rear support disc 9. The front support disc 3 is provided with an avoidance hole 30, and a telescopic screw 31 that passes through the avoidance hole 30 is rotatably installed on the central support disc 29. The telescopic screw 31 extends to the front end of the outer shell tube 1. A track round seat 32 is threadedly sleeved on the telescopic screw 31, and an adjustment guide port 33 is provided on the track round seat 32. A guide rod 33 can be slidably installed in the adjustment guide port 33. An adjusting guide plate 34 is fixedly installed in the outer shell 1 with a support plate 35 fixedly connected to the adjusting guide plate 34, a rotating seat 36 is rotatably installed on the outer ring of the track round seat 32, an articulated seat 37 is fixedly installed on the outer ring of the rotating seat 36 and the side of the sliding plate 5, and the same inclined support arm 38 is hingedly installed on the two articulated seats 37, a rectangular opening 39 is opened on the sliding plate 5, a correction rectangular rod 40 is slidably installed in the rectangular opening 39, and both sides of the correction rectangular rod 40 are fixedly connected to the inner wall of the U-shaped suspension frame 4.

[0079] In this embodiment, by adding components such as the central support disc 29, the telescopic screw 31, the track round seat 32, the adjustment guide opening 33, the adjustment guide plate 34, the support plate 35, the rotating seat 36, the inclined support arm 38, the rectangular opening 39 and the correction rectangular rod 40, the user can rotate the telescopic screw 31 to make it rotate on the central support disc 29 and move forward or backward. The movement of the telescopic screw 31 drives the track round seat 32 to move along its thread, and then the fine adjustment of the sliding plate 5 is achieved through the sliding cooperation of the adjustment guide opening 33 and the adjustment guide plate 34. At the same time, the inclined support arm 38 connects the rotating seat 36 and the sliding plate 5 through the hinge seat 37, and automatically adjusts the angle with the movement of the track round seat 32 to keep the sliding plate 5 stable. The correction rectangular rod 40 slides in the rectangular opening 39, further enhancing the connection strength between the U-shaped suspension frame 4 and the sliding plate 5 to prevent deviation.

[0080] When the front support disc 3 rotates, the U-shaped suspension frame 4 is driven to rotate. The U-shaped suspension frame 4 uses a rectangular opening 39 and a deviation-correcting rectangular rod 40 to drive the sliding plate 5 to rotate. The sliding plate 5 uses an oblique support arm 38 to drive the rotating seat 36 to rotate along the track round seat 32.

[0081] In another embodiment of the present invention, the rear support disc 9 and the middle support disc 29 are rotatably mounted with the same power transmission shaft 41, the power transmission shaft 41 and the power main shaft 25 are both fixedly sleeved with a circular gear 42, the two circular gears 1 42 are meshed with each other, the power transmission shaft 41 and the telescopic screw 31 are both fixedly sleeved with a circular gear 2 43, the two circular gears 2 43 are meshed with each other.

[0082] In this embodiment, the rear support disc 9 and the middle support disc 29 are rotatably mounted with the same power transmission shaft 41, which, as a key transmission component, realizes efficient transmission of power from the back to the front. The power transmission shaft 41 and the power main shaft 25 are both fixedly sleeved with a circular gear 1 42, and the rotational power of the power main shaft 25 is transmitted to the power transmission shaft 41 through the mutual meshing of the two circular gears 1 42. At the same time, the power transmission shaft 41 and the telescopic screw 31 are both fixedly sleeved with a circular gear 2 43, and the two circular gears 2 43 are also meshed with each other, so that the rotational power of the power transmission shaft 41 is further transmitted to the telescopic screw 31.

[0083] In another embodiment of the present invention, a bearing plate 2 44 is fixedly installed in the outer shell tube 1, a rotating motor 45 is fixedly installed on the bearing plate 24, a power countershaft 46 is rotatably installed on the central support disc 29, an output shaft of the rotating motor 45 is fixedly connected to one end of the power countershaft 46, a driving gear 47 is fixedly installed on one end of the power countershaft 46 located on the front support disc 3, a transmission gear ring 48 is fixedly installed on the side of the front support disc 3 located on the central support disc 29, and the transmission gear ring 48 is meshed with the driving gear 47.

[0084] In this embodiment, a rotating motor 45 is additionally provided on the carrier plate 2 44 fixedly installed in the outer shell 1. The rotating motor 45 serves as a power source, and its output shaft is directly fixedly connected to one end of a power countershaft 46, and the power countershaft 46 is rotatably installed on the middle support disc 29. A driving gear 47 is fixedly installed at one end of the power countershaft 46 located at the front support disc 3, and a transmission gear ring 48 is fixedly installed on one side of the middle support disc 29 of the front support disc 3, and the two mesh with each other.

[0085] The rotating motor 45 is started, and its rotating power is directly transmitted to the power countershaft 46 through the output shaft, thereby driving the driving gear 47 to rotate. Since the driving gear 47 is meshed with the transmission gear ring 48, the transmission gear ring 48 will also rotate, thereby driving the entire front support disc 3 and the U-shaped suspension frame 4 and the sliding plate 5 thereon to rotate.

[0086] In another embodiment of the present invention, a reversing motor 49 is fixedly installed on the other side of the assembly plate 6 away from the self-powered control box 7, a reversing shaft 50 is rotatably installed on the assembly plate 6, and both ends of the reversing shaft 50 are respectively fixedly connected to the output shaft of the reversing motor 49 and the self-powered control box 7, an electric telescopic rod 51 is fixedly installed on the side of the self-powered control box 7 away from the ultrasonic detector 8, a marking part 52 is fixedly installed on the output rod of the electric telescopic rod 51, and the marking part 52 has a marking pigment.

[0087] In this embodiment, the assembly plate 6 is provided with additional components such as a reversing motor 49, a reversing shaft 50, an electric telescopic rod 51 and a marking member 52. The reversing motor 49 is fixedly mounted on the side of the assembly plate 6 away from the self-powered control box 7, and its output shaft is connected to the self-powered control box 7 through the reversing shaft 50, thereby realizing the reversing adjustment of the self-powered control box 7 and the ultrasonic detector 8. At the same time, an electric telescopic rod 51 is installed on the other side of the self-powered control box 7, on which a marking member 52 carrying a marking pigment is fixed.

[0088] Brief description of usage: During the inspection process, when the ultrasonic detector 8 finds a specific position (such as a defect, anomaly, etc.) on the object to be inspected, the control system will start the reversing motor 49, and adjust the direction of the self-powered control box 7 and the ultrasonic detector 8 through the reversing shaft 50 to more accurately locate the problem area. Subsequently, the electric telescopic rod 51 is started, pushing the marking member 52 close to the object to be inspected, and leaving a mark on the problem area (such as by spraying marking paint) for subsequent processing or recording.

[0089] This embodiment realizes flexible reversing of the detection head through the synergistic effect of the reversing motor 49 and the reversing shaft 50, thereby improving the comprehensiveness and accuracy of the detection. At the same time, the addition of the electric telescopic rod 51 and the marking member 52 realizes the automatic marking function, thereby reducing the tediousness and errors of manual operation.

[0090] The automatic reversing and marking function of this embodiment not only improves the detection efficiency and accuracy, but also reduces the labor intensity and safety risks of operators. At the same time, the automatic marking function enables the problem area to be recorded and identified quickly and accurately, which facilitates subsequent processing and maintenance. In addition, this design also enhances the intelligence level of the device and improves the overall user experience and performance.

[0091] In another embodiment of the present invention, two electric telescopic rods 53 are fixedly installed on the corresponding two sides of the outer shell tube 1, and pre-support seats 54 are fixedly installed on the output rods of the two electric telescopic rods 53 for supporting on the welded pipe wall. A handle frame 55 is fixedly installed at the rear end of the outer shell tube 1.

[0092] In this embodiment, in order to improve the stability and convenience of the device during the welding pipe detection process, two electric telescopic rods 53 are added on both sides of the outer shell tube 1. The output rods of the two electric telescopic rods 53 are fixedly installed with pre-support seats 54. When the device is placed inside the welding pipe or close to the welding pipe for detection, the pre-support seats 54 can be extended and supported on the welding pipe wall, thereby enhancing the overall stability of the device and preventing deviation or shaking caused by vibration or external force. In addition, a handle frame 55 is also fixedly installed at the rear end of the outer shell tube 1, which is convenient for the operator to hold or hang the device, thereby improving the convenience of use.

[0093] In summary, compared with related technologies, this device realizes the automation and high precision of weld detection through the design of mechanical structure and the coordination of electrical control system, reduces manual operation and intervention, and speeds up the detection speed; operators do not need to frequently move the handheld probe, which reduces the workload, improves the working environment, reduces the exposure time of operators in dangerous environments, and improves work safety; through wireless transmission technology, the real-time collection and remote monitoring of detection data are realized, which is convenient for subsequent data analysis and quality management, and improves the intelligent level of production management;

[0094] At the same time, the expansion motor 24 is used to synchronously provide power for the position adjustment of the support leg 18, the sliding plate 5 and the ultrasonic detector 8, so that the synchronization is high and the overall operation is more convenient. The walking motor 20 is used to drive the walking wheel 19 to walk by itself, and the intelligent remote control is used to save effort in operation. The rotating motor 45 drives the front sliding plate 5 and the ultrasonic detector 8 to rotate for detection. The detection is more comprehensive and fast, and the uniformity is also good. Through the synergistic effect of the reversing motor 49 and the reversing shaft 50, the flexible reversing of the detection head is realized, and the comprehensiveness and accuracy of the detection are improved. At the same time, the addition of the electric telescopic rod 51 and the marking member 52 realizes the automatic marking function, reducing the tediousness and errors of manual operation.

[0095] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

Claims

1. Weld flaw detection and marking device, characterized by: include: An outer shell tube (1) having an opening at one end as a front end and a rear end as a rear end; A track positioning ring (2) is fixedly mounted in the outer shell (1); A front supporting disc (3) rotatably mounted on the track positioning ring (2); A U-shaped suspension frame (4) is fixedly mounted on the side of the front supporting disc (3) and extends to the outside of the front end of the outer shell cylinder (1); A sliding plate (5) is arranged outside the front end of the outer shell (1) and is slidably connected to the U-shaped suspension frame (4); An assembly plate (6) fixedly mounted on one end of the sliding plate (5); A self-powered control box (7), arranged on one side of the assembly plate (6); An ultrasonic detector (8) fixedly mounted on the self-powered control box (7) and used for detecting the weld seam of the welded pipe; The self-powered control box (7) is provided with a circuit board, the circuit board is connected to the ultrasonic detector (8) so as to be controlled by an external terminal, and the circuit board is provided with a signal processing module and a power control module connected to the signal processing module, a signal wireless receiving module and a signal wireless transmitting module.

2. The weld flaw detection and marking device according to claim 1, characterized in that: The outer shell (1) is provided with a retractable walking mechanism, which comprises a rear support disc (9) fixedly mounted in the outer shell (1), the rear support disc (9) being located between the front support disc (3) and the rear end of the outer shell (1), two rotating central shafts (10) being rotatably mounted on the rear support disc (9), both ends of the two rotating central shafts (10) being fixedly mounted with transverse screws (11), four transverse screws (11) being threadedly sleeved with rack plates (12), four groups of rectangular guide grooves (13) being opened on the inner wall of the outer shell (1), four rectangular guide bars (14) being fixedly mounted on the four rack plates (12), and the four rectangular guide bars (14) being fixedly mounted on the four rack plates (12). The two ends of the outer shell (1) extend into the corresponding rectangular guide groove (13) respectively and can slide along the rectangular guide groove (13); four supporting long shafts (15) are rotatably installed in the outer shell (1); the four supporting long shafts (15) are fixedly sleeved with residual gears (16); the four residual gears (16) are respectively meshed with the corresponding rack plates (12); two adjusting openings (17) are provided on the corresponding two sides of the outer shell (1); supporting legs (18) are installed through the four adjusting openings (17); the four supporting legs (18) are respectively fixedly connected with the corresponding residual gears (16); and the four supporting legs (18) are rotatably installed with walking wheels (19).

3. The weld flaw detection and marking device according to claim 2, characterized in that: A travel motor (20) is fixedly mounted on at least one of the support legs (18); a sprocket (21) is fixedly mounted on the output shaft of the travel motor (20) and the side of the corresponding travel wheel (19); and the two sprockets (21) are sleeved with the same chain (22).

4. The weld flaw detection and marking device according to claim 3, characterized in that: A bearing plate (23) is fixedly mounted in the outer shell cylinder (1), an expansion motor (24) is fixedly mounted on the bearing plate (23), a power main shaft (25) is rotatably mounted on the rear support disc (9), an output shaft of the expansion motor (24) is fixedly connected to one end of the power main shaft (25), a driving pulley (26) is fixedly sleeved on the power main shaft (25), two rotating central shafts (10) are fixedly sleeved with driven pulleys (27), and the driving pulley (26) and the two driven pulleys (27) are sleeved with the same toothed belt (28).

5. The weld flaw detection and marking device according to claim 4, characterized in that: The diameter ratio of the driving pulley (26) to the driven pulley (27) is 1.5 to 2:1, the wrap angle between the toothed belt (28) and the driving pulley (26) and the driven pulley (27) is greater than 120°, and a tensioning wheel is provided inside the outer shell (1) for tensioning the toothed belt (28).

6. The weld flaw detection and marking device according to claim 1, characterized in that: A battery pack is also provided in the self-powered control box (7), and the battery pack is connected to the circuit board and the ultrasonic detector (8). A detachable inspection panel is provided on at least one side of the self-powered control box (7).

7. The weld flaw detection and marking device according to claim 2, characterized in that: When the rack plate (12) slides, the angle at which the residual gear (16) is driven to rotate is matched with the angle at which the support leg (18) rotates along the adjustment opening (17); and the sliding distance of the rectangular guide bar (14) along the rectangular guide groove (13) is equal to the sliding distance of the rack plate (12) driven by the transverse screw (11).

8. The weld flaw detection and marking device according to claim 2, characterized in that: The outer rings of the plurality of running wheels (19) are all coated with a rubber layer, and the thickness of the rubber layer is greater than 1 cm.

9. The weld flaw detection and marking device according to claim 4, characterized in that: A power controller is provided in the outer shell (1), and a cable connector is provided at the rear end of the outer shell (1). The cable connector is connected to the travel motor (20) and the expansion motor (24) through the power controller.

10. The weld flaw detection and marking device according to claim 9, characterized in that: The travel motor (20) and the expansion motor (24) are both connected to the circuit board.

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