Clamping mechanism of nickel pipe welding seam automatic crawling ultrasonic detector

Abstract

The invention relates to the field of ultrasonic detection equipment, in particular to a clamping mechanism of a nickel pipe welding seam automatic crawling ultrasonic detector, which comprises a fixed bin, a hub motor is mounted in the middle of the fixed bin, a fixed frame is mounted on the periphery of the hub motor, and electric push rods are mounted at two ends of the fixed bin. Rotating frames are rotationally connected to the sides, close to the fixed bin, of the peripheries of the electric push rods correspondingly, uniformly-distributed supporting rods are rotationally connected to the peripheries of the rotating frames correspondingly, motor bases are installed at the tail ends of the supporting rods correspondingly, rotating bases are fixedly connected to the driving ends of the motor bases correspondingly, and the rotating bases are rotationally connected to the ends of the supporting rods correspondingly; according to the two-way symmetrical welding seam detection device, through the two-way symmetrical detection design, detection blind areas are greatly reduced, the recognition precision of welding seam defects is improved, the comprehensiveness and accuracy of welding seam detection are improved, and the two-way symmetrical welding seam detection device better meets the high-standard detection requirement of industrial pipelines.

Description

Technical Field

[0001] The invention relates to the field of ultrasonic testing equipment, in particular to a clamping mechanism of an automatic crawling ultrasonic detector for a nickel tube weld. Background Art

[0002] Nickel tubes are currently widely used in the chemical and energy sectors due to their excellent corrosion resistance and high-temperature stability. The quality of their welds directly impacts the safety of pipeline systems. Traditional nickel tube weld inspection relies heavily on manually operated ultrasonic equipment, requiring manual adjustment of the probe position outside or inside the pipe. This is not only labor-intensive but also difficult to maintain consistent inspection over long distances and on large-diameter nickel tubes. Operator errors can easily lead to missed inspections. The clamping mechanism of existing automated crawling inspection equipment has significant drawbacks: First, its rigid structure makes it difficult to adapt to nickel tubes of varying diameters, resulting in insufficient flexibility when entering narrow pipes. Second, its support stability is poor, and vibration during crawling can easily cause poor probe-to-pipe wall contact, impacting ultrasonic signal acquisition. Third, it lacks integrated preprocessing capabilities, requiring manual cleaning of the weld area and application of coupling agent before inspection, resulting in low efficiency and uneven coupling. Furthermore, some equipment suffers from insufficient positioning accuracy, preventing accurate feedback on the inspection location, making subsequent defect tracing difficult. These issues hinder existing equipment from meeting the requirements for efficient and accurate nickel tube weld inspection. Therefore, we propose a clamping mechanism for an automated crawling ultrasonic detector for nickel tube welds to address these issues. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a clamping mechanism of an automatic crawling ultrasonic detector for nickel tube welds.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a clamping mechanism of an automatic crawling ultrasonic detector for nickel tube welds, comprising a fixed warehouse, a hub motor is installed in the middle of the fixed warehouse, a fixed frame is installed on the outer periphery of the hub motor, electric push rods are installed at both ends of the fixed warehouse, the outer periphery of the electric push rod close to the fixed warehouse is rotatably connected to a rotating frame, the outer periphery of the rotating frame is rotatably connected to uniformly distributed support rods, the ends of the support rods are installed with motor seats, the driving ends of the motor seats are fixedly connected to a rotating seat, the rotating seats are rotatably connected to the ends of the support rods, the ends of the rotating seats are fixedly connected to the mounting frame, a side frame is installed on one side of the mounting frame, the inner side of a part of the mounting frame away from the rotating seat is rotatably connected to a guide wheel, the inner side of a part of the side frame away from the rotating seat is provided with a shell, and an ultrasonic probe is installed on the inner side of one end of the shell close to the rotating seat, and the ultrasonic probe is used to detect the welds of the pipe.

[0005] Preferably, a camera is installed on one side of the outer periphery of the fixing frame, and fill lights are provided on both sides of the camera.

[0006] Preferably, both ends of the shell are fixedly connected with fixed shafts, and the fixed shafts are rotatably connected to the side frames.

[0007] Preferably, a return torsion spring is provided between the fixed shaft and the side frame, and an air pump is installed on the inner side of the end of the shell away from the rotating seat.

[0008] Preferably, the middle part of the support rod is rotatably connected to one side of the electric push rod, and the end of the connecting rod away from the support rod is rotatably connected to a rotating head, and the rotating head is rotatably connected to the end of the electric push rod.

[0009] Preferably, a slot is provided on one side of the middle portion of the support rod, a guide frame is provided on one side of the slot, and the guide frame is rotatably connected to the inside of the slot via a rotating shaft.

[0010] Preferably, one end of the guide frame is fixedly connected to a hose, and the end of the hose away from the guide frame is arranged inside the support rod, and the support rod stores a coupling agent.

[0011] Preferably, the hoses are all slidably connected to the support rods, the guide frame is slidably connected to a moving part on one side away from the hose, and a nozzle is installed on one end of the moving part.

[0012] Preferably, one end of the nozzle is fixedly connected to a conduit, the end of the conduit away from the nozzle is slidably connected to the inside of the guide frame, and the end of the moving part away from the guide frame is set as an inclined surface.

[0013] Preferably, a hollow motor is provided on one side of the rotating frame close to the fixed bin, the hollow motors are installed at both ends of the fixed bin, and the inner driving parts of the hollow motors are fixedly connected to the rotating frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the initial state of the present invention, the electric push rods on both sides are in an extended state. Through the linkage of the rotating head and the connecting rod, the support rods can be driven closer to each other, allowing the device to fold into a slender "long strip" structure. This design greatly optimizes the smoothness of the device entering the interior of the pipe, and is particularly suitable for narrow or long-distance pipeline scenarios. When the device enters the front end of the pipe, the electric push rods are remotely controlled to retract, and the support rods can be driven to open through the rotating head and the connecting rod, so that the end guide wheel is tightly against the inner wall of the pipe, achieving stable support and laying the foundation for subsequent inspection work. Compared with the rigid structure of traditional equipment, the folding and adaptive support design of the present invention significantly improves its applicability in complex pipeline environments.

[0016] 2. The servo motor at the forward end of the device of the present invention can drive the rotating seat to deflect, so that the forward end mounting frame can be adjusted vertically. At the same time, it cooperates with the stepper motor to drive the guide wheel and the mounting frame to tilt. Combined with the rotational drive of the rotating frame and the support rod by the hollow motor, the device can be moved as a whole inside the pipe and can be flexibly adapted to pipes of different diameters. During the movement, the hub motor of the fixed bin drives the fixed frame to rotate, so that the fill light and the camera rotate synchronously. Not only can the weld seam inside the pipe be captured in real time and transmitted to an external receiving device to assist in locating the weld position, but the real-time coordinates of the device inside the pipeline can also be accurately fed back. This effectively solves the problem of "difficult positioning" in long-length pipeline inspection, enhances adaptability to different pipe diameters and detection flexibility, and significantly improves efficiency compared to the manual positioning or segmented detection mode of the existing technology.

[0017] 3. After the device reaches the inspection position, the present invention first controls the guide wheel to be horizontal, activates the air pump at the end of the housing, and cleans the inspection area with pressurized airflow. During this process, the reaction force generated by the air pump's suction and discharge causes the housing to deflect, which, in conjunction with the return spring on the fixed shaft, causes the housing to swing, significantly expanding the cleaning range, preventing impurities from interfering with the inspection results, and optimizing pre-test cleaning and coupling fluid application. Compared with traditional manual cleaning or fixed-angle cleaning, cleaning efficiency and cleanliness are significantly improved.

[0018] 4. The present invention is more innovative in the coupling fluid application process: a hollow motor adjusts the position of the leading and trailing support rods to ensure that the shell fits the inner wall of the pipe; a guide frame drives the movable portion to extend along the slot, and the tilt angle is precisely adjusted under the traction of a magnet to ensure that the movable portion always faces the shell; the pump body draws coupling fluid through a hose, and the nozzle evenly sprays it onto the area to be tested around the weld through the conduit. At the same time, the hollow motor drives the equipment to rotate, so that the coupling fluid evenly covers both sides of the weld. The shell further spreads the coupling fluid, providing a stable acoustic impedance transmission environment for ultrasonic testing. Compared with the manual application or fixed-point spraying methods in the existing technology, this process has a more uniform coupling effect and avoids the problems of coupling agent waste or insufficient application.

[0019] 5. After the coupling fluid is applied, the ultrasonic probe inside the housing is activated and driven by a hollow motor to perform 360-degree rotational inspection of the weld. The inspection data is transmitted to an external device in real time. After the single-sided inspection is completed, the other side of the weld can be simultaneously inspected by symmetrically adjusting the structure of the other side of the device. Compared with traditional single-directional inspection or the mode that requires multiple adjustments to the device position, the bidirectional symmetrical inspection design of the present invention significantly reduces the detection blind spot, improves the recognition accuracy of weld defects (such as cracks and incomplete penetration), and enhances the comprehensiveness and accuracy of weld inspection, which better meets the high-standard inspection requirements of industrial pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the front three-dimensional structure of a clamping mechanism of an automatic crawling ultrasonic detector for nickel tube welds according to the present invention;

[0021] Figure 2 This is a schematic structural diagram of the clamping mechanism of the nickel tube weld automatic crawling ultrasonic detector of the present invention in use;

[0022] Figure 3 This is a partial structural diagram of a fixed compartment of a clamping mechanism of an automatic crawling ultrasonic detector for nickel tube welds according to the present invention;

[0023] Figure 4 This is a partial structural diagram of the connecting rod of the clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds of the present invention;

[0024] Figure 5 This is a partial structural diagram of a guide frame of a clamping mechanism of an automatic crawling ultrasonic detector for nickel tube welds according to the present invention;

[0025] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 7 The present invention is a schematic diagram of the partial structure inside the shell of the clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds.

[0027] 101. Fixing frame; 102. Fill light; 103. Camera; 104. Fixing chamber; 105. Support rod; 106. Guide wheel; 107. Mounting frame; 108. Hollow motor; 109. Pipe; 110. Electric push rod; 111. Rotating frame; 112. Motor seat; 113. Notch; 114. Moving part; 115. Connecting rod; 116. Rotating head; 117. Conduit; 118. Nozzle; 119. Guide frame; 120. Rotating shaft; 121. Hose; 122. Side frame; 123. Shell; 124. Rotating seat; 125. Fixing shaft; 126. Ultrasonic probe; 127. Air pump. DETAILED DESCRIPTION

[0028] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0029] like Figure 1-Figure 7The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds shown in the figure includes a fixed warehouse 104, a hub motor is installed in the middle of the fixed warehouse 104, a fixing frame 101 is installed on the periphery of the hub motor, a camera 103 is installed on one side of the outer periphery of the fixing frame 101, and fill lights 102 are provided on both sides of the camera 103. Electric push rods 110 are installed at both ends of the fixed warehouse 104, and the outer periphery of the electric push rods 110 close to the fixed warehouse 104 is rotatably connected to a rotating frame 111. The outer periphery of the rotating frame 111 is rotatably connected to uniformly distributed support rods 105, and the ends of the support rods 105 are installed with motor seats 112. The driving ends of the motor seats 112 are fixedly connected to rotating seats 124, and the rotating seats 124 are rotatably connected to the ends of the support rods 105.

[0030] Furthermore, in specific implementation, when the equipment moves inside the pipe 109, the hub motor in the middle of the fixed bin 104 will work, and the hub motor can drive each fixing frame 101 to rotate. The rotation of the fixing frame 101 can make the fill light 102 and the camera 103 rotate inside the pipe 109, so that the inside of the pipe 109 can be photographed by the fill light 102 and the camera 103, and transmitted to the receiving device in the hands of people outside, to assist people in determining the position of the weld inside the pipe 109, and to help people determine the position of the equipment inside the pipe from the outside, which is beneficial to the inspection of long-length pipes. The hollow motor 108 can drive the support rod 105 and the guide wheel 106 at the forward end to rotate. When the adjustment is completed Finally, the support rod 105 at the tail end can be retracted a little through the operation of the rotating frame 111, and then the stepping motor on the rotating seat 124 at the end of the support rod 105 at the tail end will start to work, thereby driving the mounting frame 107 to deflect, so that the guide wheel 106 and the shell 123 can exchange the inner and outer positions, so that the shell 123 can be attached to the inner wall of the pipe 109, and then the support rod 105 at the tail end is opened by the rotating frame 111 to achieve stable support of the tail end. At this time, the rotating frame 111 at the front end is retracted a little, and then the rotating seat 124 and the mounting frame 107 are deflected and reset through the motor seat 112. After that, the operation at the tail end is repeated to adjust the positions of the guide wheel 106 and the shell 123 at the front end so that the shell 123 at the front end also fits the inner wall of the pipe 109.

[0031] Among them, the ends of the rotating seat 124 are fixedly connected to the mounting frame 107, and a side frame 122 is installed on one side of the mounting frame 107. The inner side of a part of the mounting frame 107 away from the rotating seat 124 is rotatably connected to the guide wheel 106, and the inner side of a part of the side frame 122 away from the rotating seat 124 is provided with a shell 123. Both ends of the shell 123 are fixedly connected to a fixed shaft 125, and the fixed shaft 125 is rotatably connected to the side frame 122. A reset torsion spring is provided between the fixed shaft 125 and the side frame 122, and an air pump 127 is installed on the inner side of one end of the shell 123 away from the rotating seat 124, and an ultrasonic probe 126 is installed on the inner side of one end of the shell 123 close to the rotating seat 124. The ultrasonic probe 126 is used to detect the weld of the pipe 109;

[0032] Furthermore, during specific implementation, people can use the equipment to detect welding defects on the pipe 109. In the initial state, the electric push rods 110 on both sides are in an extended state, so that the rotating heads 116 on both sides will drive the connecting rods 115 to involve the support rods 105 to be close, so that the equipment is in a folded state, so that the equipment presents a slender "long strip", so that the equipment can enter the pipe more smoothly. During operation, when people put the equipment into the front end of the pipe 109, people can remotely start the electric push rods 110, and the operation of the electric push rods 110 can drive the rotating heads 116 on both sides to move, and the rotating heads 116 can use the connecting rods 115 to drive the support rods 105 to open, so that the guide wheels 106 installed at the ends of the support rods 105 can press against the inner wall of the pipe 109, and through the two sides The guide wheel 106 can support the equipment inside the pipe 109, which is convenient for subsequent inspection work. During this process, the operation of the servo motor in the forward end motor seat 112 can drive the rotating seat 124 to deflect so that the mounting frame 107 at the forward end can be upright, while the tail end remains unchanged. At the same time, the stepper motor in the forward end rotating seat 124 will drive the guide wheel 106 and the mounting frame 107 at the forward end to deflect, so that the guide wheel 106 at the forward end is tilted at an angle. At this time, the hollow motor 108 at the forward end will start working. The operation of the hollow motor 108 can drive the various rotating frames 111 and the support rod 105 at the forward end to rotate. The guide wheel 106 tilted at the end of the forward end support rod 105 can drive the equipment to move as a whole inside the pipe 109, so that the equipment can adapt to pipes 109 of different diameters.

[0033] Among them, the middle part of the support rod 105 is rotatably connected to the side of the electric push rod 110, and the end of the connecting rod 115 away from the support rod 105 is rotatably connected to the rotating head 116. The rotating head 116 is rotatably connected to the end of the electric push rod 110. The side of the rotating frame 111 close to the fixed warehouse 104 is provided with a hollow motor 108. The hollow motor 108 is installed at both ends of the fixed warehouse 104, and the inner driving part of the hollow motor 108 is fixedly connected to the rotating frame 111.

[0034] Furthermore, in a specific implementation, the operation of the hollow motor 108 can drive one end of the device to rotate as a whole, so that the coupling liquid can be evenly coated on the contact parts on both sides of the weld, which is beneficial to subsequent detection work. During the coupling liquid coating process, the shell 123 will spread the coupling liquid it contacts, which is beneficial to subsequent detection work. After that, the guide frame 119 and the internal pump body stop working and are retracted. At this time, the ultrasonic probe 126 inside the shell 123 starts working. During the rotation of the hollow motor 108, the weld inside the pipe 109 is inspected, and the detection results will be directly transmitted to the receiving device in people's hands. When the detection on one side is completed, repeating the above action on the other side of the device can realize the detection of the other side of the weld, which is beneficial to actual use.

[0035] Among them, a slot 113 is opened on one side of the middle part of the support rod 105, and a guide frame 119 is provided on one side of the slot 113. The guide frame 119 is rotatably connected to the inside of the slot 113 through a rotating shaft 120. One end of the guide frame 119 is fixedly connected to a hose 121. The end of the hose 121 away from the guide frame 119 is arranged inside the support rod 105. The support rod 105 stores a coupling agent. The hose 121 is slidably connected to the support rod 105. The side of the guide frame 119 away from the hose 121 is slidably connected to the moving part 114. A nozzle 118 is installed on one end of the moving part 114. One end of the nozzle 118 is fixedly connected to the conduit 117. The end of the conduit 117 away from the nozzle 118 is slidably connected to the inside of the guide frame 119. The end of the moving part 114 away from the guide frame 119 is set as an inclined surface;

[0036] Furthermore, in a specific implementation, after the equipment reaches the position to be detected, people can first control the guide wheel 106 to directly turn sideways and start the air pump 127 at one end of the shell 123. The air flow can be directly guided and pressurized to be ejected through the operation of the air pump 127, so as to realize the cleaning of the subsequent part to be detected. In this process, the suction and spraying of the air pump 127 will cause the shell 123 to deflect. Under the cooperation of the return spring installed on the shaft of the fixed shaft 125, the shell 123 will swing when the air is ejected, thereby further improving the cleaning range of the shell 123, which is beneficial to the subsequent detection work. When the support rod 105 is opened, the guide frame 119 inside the slot 113 will start to work, so that the moving part 114 will extend along the guide frame 119. Under the guidance of the beveled surface at the end of the movable part 114, the movable part 114 and the guide frame 119 will be lifted as a whole to "float" out of the slot 113. During this process, when the movable part 114 is extended, the end of the movable part 114 will enter the influence range of the magnet embedded at the end of the shell 123, thereby pulling the end of the movable part 114 to adjust the inclination angle of the movable part 114 so that the end of the movable part 114 is always facing the shell 123. At this time, the pump body inside the guide frame 119 starts to work. Through the work of the pump body, the coupling liquid inside the support rod 105 will be extracted through the hose 121, and can be transported through the conduit 117, and finally sprayed out through the nozzle 118, so that the parts around the weld to be in contact with the shell 123 can be coated with the coupling liquid.

[0037] Working principle:

[0038] In actual use, people can use the equipment to detect welding defects on the pipe 109. In the initial state, the electric push rods 110 on both sides are in an extended state, so that the rotating heads 116 on both sides will drive the connecting rods 115 to involve the support rods 105 to be close, so that the device is in a folded state, so that the device presents a slender "long strip", so that the device can enter the pipe more smoothly. During the working process, when people put the device into the front end of the pipe 109, people can remotely start the electric push rods 110, and the work of the electric push rods 110 can drive the rotating heads 116 on both sides to move, and the rotating heads 116 can use the connecting rods 115 to drive the support rods 105 to open, so that the support rods 105 can be opened. 05 The guide wheel 106 installed at the end can resist the inner wall of the pipe 109, and the guide wheels 106 on both sides can support the equipment inside the pipe 109, which is convenient for subsequent detection work. In this process, the work of the servo motor in the motor seat 112 at the forward end can drive the rotating seat 124 to deflect so that the mounting frame 107 at the forward end can be upright, while the tail end remains unchanged. At the same time, the stepper motor in the rotating seat 124 at the forward end will drive the guide wheel 106 and the mounting frame 107 at the forward end to deflect, so that the guide wheel 106 at the forward end is tilted at an angle. At this time, the hollow motor 108 at the forward end will start working, and the work of the hollow motor 108 can drive the various rotating frames 111 at the forward end to move with the support rod 105 The device rotates, and the inclined guide wheel 106 at the end of the forward end support rod 105 can drive the device to move as a whole inside the pipe 109, so that the device can adapt to pipes 109 of different diameters. In the process of the device moving inside the pipe 109, the hub motor in the middle of the fixed warehouse 104 will work, and the hub motor can drive each fixing frame 101 to rotate. The rotation of the fixing frame 101 can make the fill light 102 and the camera 103 rotate inside the pipe 109, so that the inside of the pipe 109 can be photographed by the fill light 102 and the camera 103, and the video can be transmitted to the receiving device in the hands of people outside, so as to assist people in determining the position of the weld inside the pipe 109 and help people determine the position of the weld inside the pipe 109. The position of the device inside the pipeline is conducive to the inspection of long-length pipelines. After the device reaches the position to be inspected, people can first control the guide wheel 106 to directly cross and start the air pump 127 at one end of the shell 123. The air pump 127 can directly guide the airflow and pressurize it to spray it out, so as to achieve the cleaning of the subsequent parts to be inspected. In this process, the suction and painting work of the air pump 127 will cause the shell 123 to deflect. Under the cooperation of the return spring installed on the shaft of the fixed shaft 125, the shell 123 will swing when the air is sprayed, thereby further improving the cleaning range of the shell 123, which is conducive to subsequent inspection work. Afterwards, the hollow motor 108 can drive the support rod 105 and the guide wheel 106 at the forward end to rotate.Thereby, it is possible to adjust the position of the equipment according to the position of the weld seam. When the adjustment is completed, the support rod 105 at the tail end can be retracted a little by the operation of the rotating frame 111, and then the stepping motor on the rotating seat 124 at the end of the support rod 105 at the tail end will start to work, thereby driving the mounting frame 107 to deflect, so that the guide wheel 106 and the shell 123 can exchange the inner and outer positions, so that the shell 123 can be attached to the inner wall of the pipe 109, and then the support rod 105 at the tail end is opened by the rotating frame 111 to achieve stable support of the tail end. At this time, the rotating frame 111 at the front end is retracted a little, and then the motor seat 112 is used to The rotating seat 124 and the mounting frame 107 are deflected and reset, and then the operation at the tail end is repeated to adjust the position of the guide wheel 106 and the shell 123 at the forward end so that the shell 123 at the forward end is also in contact with the inner wall of the pipe 109. During this process, when the support rod 105 is opened, the guide frame 119 inside the slot 113 will start to work, so that the moving part 114 will extend along the guide frame 119. Under the guidance of the beveled surface at the end of the moving part 114, the moving part 114 and the guide frame 119 will be lifted as a whole to "float out" of the slot 113. During this process, when the moving part 114 is extended, the end of the moving part 114 will The end of the movable part 114 is pulled into the influence range of the magnet embedded in the end of the shell 123, thereby adjusting the tilt angle of the movable part 114 so that the end of the movable part 114 is always facing the shell 123. At this time, the pump body inside the guide frame 119 starts to work, and the coupling liquid inside the support rod 105 is extracted through the hose 121 through the work of the pump body, and can be transported through the conduit 117 and finally sprayed out through the nozzle 118, so that the parts around the weld to be in contact with the shell 123 can be coated with the coupling liquid. The work of the hollow motor 108 can drive one end of the device to rotate as a whole, so that The coupling liquid can be evenly applied to the contact areas on both sides of the weld, which is beneficial for subsequent testing. During the coupling liquid coating process, the housing 123 will evenly spread the coupling liquid it contacts, which is beneficial for subsequent testing. Then, the guide frame 119 and the internal pump body stop working and are retracted. At this time, the ultrasonic probe 126 inside the housing 123 starts working. During the rotation of the hollow motor 108, the weld inside the pipe 109 is tested. The test results are directly transmitted to the receiving device in the hands of people. After the test on one side is completed, the above action is repeated on the other side of the device to achieve the test on the other side of the weld, which is beneficial for practical use.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism for an automatic crawling ultrasonic detector for a nickel tube weld, comprising a fixed chamber (104), characterized in that: A hub motor is installed in the middle of the fixed bin (104), a fixed frame (101) is installed on the periphery of the hub motor, electric push rods (110) are installed at both ends of the fixed bin (104), and the outer periphery of the electric push rods (110) close to the fixed bin (104) is rotatably connected to a rotating frame (111), and the outer periphery of the rotating frame (111) is rotatably connected to uniformly distributed support rods (105), and the ends of the support rods (105) are installed with motor seats (112), and the driving ends of the motor seats (112) are fixedly connected to rotating seats (124), and the rotating seats (124) are rotatably connected to the fixed bin (104). The end of the support rod (105) and the end of the rotating seat (124) are fixedly connected to the mounting frame (107), a side frame (122) is installed on one side of the mounting frame (107), the inner side of a part of the mounting frame (107) away from the rotating seat (124) is rotatably connected to the guide wheel (106), the inner side of a part of the side frame (122) away from the rotating seat (124) is provided with a shell (123), and the inner side of one end of the shell (123) close to the rotating seat (124) is installed with an ultrasonic probe (126), and the ultrasonic probe (126) is used to detect the weld of the pipe (109).

2. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 1 is characterized by: A camera (103) is installed on one side of the outer periphery of the fixing frame (101), and fill lights (102) are provided on both sides of the camera (103).

3. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 2, characterized in that: Both ends of the housing (123) are fixedly connected to fixed shafts (125), and the fixed shafts (125) are rotatably connected to the side frames (122).

4. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 3 is characterized by: A return torsion spring is provided between the fixed shaft (125) and the side frame (122), and an air pump (127) is installed on the inner side of one end of the housing (123) away from the rotating seat (124).

5. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 1, characterized in that: The middle part of the support rod (105) is rotatably connected to a connecting rod (115) on one side close to the electric push rod (110), and the end of the connecting rod (115) away from the support rod (105) is rotatably connected to a rotating head (116), and the rotating head (116) is rotatably connected to the end of the electric push rod (110).

6. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 1, characterized in that: A slot (113) is provided on one side of the middle portion of each support rod (105), and a guide frame (119) is provided on one side of each slot (113). Each guide frame (119) is rotatably connected to the inside of the slot (113) via a rotating shaft (120).

7. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 6, characterized in that: One end of the guide frame (119) is fixedly connected to a hose (121), and one end of the hose (121) away from the guide frame (119) is arranged inside the support rod (105), and a coupling agent is stored inside the support rod (105).

8. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 7, characterized in that: The hoses (121) are all slidably connected to the support rods (105), and the side of the guide frame (119) away from the hoses (121) is slidably connected to the moving part (114), and a nozzle (118) is installed at one end of the moving part (114).

9. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 8, characterized in that: One end of the nozzle (118) is fixedly connected to a conduit (117), one end of the conduit (117) away from the nozzle (118) is slidably connected to the inside of the guide frame (119), and one end of the moving part (114) away from the guide frame (119) is set as an inclined surface.

10. The clamping mechanism of the automatic crawling ultrasonic detector for nickel tube welds according to claim 1, characterized in that: A hollow motor (108) is provided on one side of the rotating frame (111) close to the fixed bin (104). The hollow motor (108) is installed at both ends of the fixed bin (104). The inner driving parts of the hollow motor (108) are fixedly connected to the rotating frame (111).

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