Ultrasonic TOFD (Time of Flight Diffraction) probe detection device with multi-angle transformation

Abstract

The utility model relates to the technical field of ultrasonic TOFD (Time of Flight Diffraction), in particular to an ultrasonic TOFD probe detection device with multi-angle transformation, which comprises a trolley frame, and lead screw guide rails are arranged on two sides of the trolley frame; a transmission gear is arranged on the main shaft and transmits the torque of the servo motor to the connecting rod and the micro mechanical arm, so that the TOFD probe is further tightly attached to the weld metal plate; the objective of the utility model is to solve the problems of low efficiency, influence of human factors on detection precision and poor repeatability of a traditional manual detection mode.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic TOFD technology, specifically to an ultrasonic TOFD probe device that can change the probe direction at multiple angles. Background Technology

[0002] Ultrasonic TOFD (Time-of-Flight Difference) testing technology plays a crucial role in the inspection of energy equipment. This technology is primarily used to detect defects in welds, internal materials, and surfaces, such as cracks, porosity, and corrosion. Failure to detect these defects promptly can lead to equipment failure or safety accidents, severely impacting production stability and safety. With increasingly complex industrial equipment and harsher operating environments, the demands for testing accuracy and efficiency are constantly rising, posing new challenges to ultrasonic TOFD testing technology.

[0003] Traditional ultrasonic TOFD testing relies on manual hand-held probes, requiring operators to repeatedly scan the surface of the workpiece to ensure coverage of the entire testing area. However, this method has the following problems: (1) Low testing efficiency: Manual operation requires repeated probe movement, especially when testing large-area workpieces (such as large storage tanks, pressure vessels, long welds, etc.), which takes a long time; (2) Testing accuracy is affected by human factors: Hand-held probes may cause scanning trajectory deviation, uneven pressure, or angle changes, thus affecting the stability and repeatability of the test; (3) Difficulty in ensuring uniform scanning: Manual operation may cause uneven scanning trajectories, resulting in some areas not being detected or repeated testing, affecting data integrity; (4) Long-term operation can easily cause fatigue: For large-scale testing tasks, holding the probe for a long time can easily lead to operator fatigue, which in turn affects the quality and stability of the test.

[0004] Therefore, developing an ultrasonic TOFD probe inspection device with automated inspection capabilities is of great practical significance, enabling high-precision inspection of workpieces and effectively replacing traditional manual inspection. Utility Model Content

[0005] The purpose of this invention is to provide an ultrasonic TOFD probe detection device with multi-angle transformation, so as to solve the problems of low efficiency, detection accuracy affected by human factors, and poor repeatability of traditional manual detection methods.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An ultrasonic TOFD probe detection device with multi-angle transformation includes a trolley frame. Wheels are located at the four corners of the trolley frame. Two lead screw guides are spaced apart on the trolley frame, with lead screw seats connected to both ends of each guide. First servo motors are connected to both sides of the front end of the trolley frame via first motor flanges. The front ends of the two lead screw guides are connected to the output shafts of the first servo motors via adjacent first motor flanges. A main shaft is mounted on the trolley frame, with its two ends threaded onto the two lead screw guides. The main shaft is connected to a second servo motor via a second motor flange, and the output shaft of the second servo motor is connected to... The input gear is provided, and a first transmission gear and a first transmission gear shaft connected to the first transmission gear are provided on one side of the main shaft. The end of the first transmission gear shaft away from the first transmission gear rotates through the main shaft and is connected to a second transmission gear. A third transmission gear and a fourth transmission gear mesh with one side of the second transmission gear, and a fifth transmission gear meshes with the other side of the second transmission gear. Both the fourth and fifth transmission gears are connected to connecting shafts, and a connecting rod is connected to one end of each connecting shaft that rotates through the main shaft. A micro-mechanical arm is slidably mounted on each of the two connecting rods, and a TOFD probe is mounted on the micro-mechanical arm.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1. This utility model discloses an ultrasonic TOFD probe detection device with multi-angle transformation. When the surface of the weld workpiece to be detected has the characteristics of gradual concave-convex curved surface, the TOFD probe can be closely attached to the surface of the weld workpiece by adjusting the second servo motor, the first servo motor and controlling the autonomous movement of the micro robotic arm.

[0010] 2. The present invention provides an ultrasonic TOFD probe detection device with multi-angle transformation. In the working state, the workpiece to be tested only needs to be fixed without position adjustment. By controlling the first servo motor, the main shaft on the lead screw guide can be moved precisely, ensuring the absolute fixation of the initial position of the workpiece to be tested and realizing the orderly performance of ultrasonic TOFD defect detection.

[0011] 3. This utility model designs an ultrasonic TOFD probe detection device with multi-angle transformation. The TOFD probe adopts a one-transmitter-one-receiver system. The precise arrangement of the TOFD probe is achieved through a connecting rod and a micro robotic arm, ensuring the reliability of the data. Attached Figure Description

[0012] Figure 1This is a three-dimensional structural diagram of an ultrasonic TOFD probe detection device with multi-angle transformation according to the present invention.

[0013] Figure 2 This is a schematic diagram of the working state of an ultrasonic TOFD probe detection device with multi-angle transformation according to the present invention.

[0014] Figure 3 This is a schematic diagram of the trolley frame of an ultrasonic TOFD probe detection device with multi-angle transformation according to the present invention.

[0015] Figure 4 This is a schematic diagram of a gear assembly detection device with a multi-angle changing ultrasonic TOFD probe, according to the present invention.

[0016] Figure 5 This is an exploded view of a gear assembly detection device with a multi-angle changing ultrasonic TOFD probe, according to the present invention.

[0017] Icons: 2-Spindle, 401-First servo motor, 402-Second servo motor, 501-First motor flange, 502-Second motor flange, 6-Lead screw seat, 7-Lead screw guide rail, 8-Cart frame, 9-Connecting rod, 10-Miniature robotic arm, 11-Wheel, 13-Input gear, 151-First transmission gear, 152-Second transmission gear, 153-Third transmission gear, 154-Fourth transmission gear, 155-Fifth transmission gear, 16-TOFD probe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Example:

[0020] refer to Figures 1 to 5As shown, a preferred embodiment of an ultrasonic TOFD probe detection device with multi-angle transformation is disclosed. This embodiment includes a trolley frame 8, with wheels 11 at each of the four corners below the trolley frame 8 to facilitate movement of the entire device. The trolley frame 8 has two spaced-apart lead screw guide rails 7, each with a lead screw seat 6 connected to both ends. The lead screw seat 6 is mounted on the trolley frame 8. First servo motors 401 are connected to both sides of the front end of the trolley frame 8 via first motor flanges 501. The front ends of the two lead screw guide rails 7 are connected to the output shaft of the first servo motors 401 via adjacent first motor flanges 501. A main shaft 2 is provided on the trolley frame 8, with both ends threaded onto the two lead screw guide rails 7. The main shaft 2 is connected to the second servo motor 402 via a second motor flange 502. The second servo motor 402 is connected to the input gear 13 via its output shaft. The main shaft 2 has a first transmission gear meshing with the input gear 13 and a first transmission gear shaft 151 connected to the first transmission gear on one side. The end of the first transmission gear shaft 151 away from the first transmission gear rotatably passes through the main shaft 2 and is connected to a second transmission gear 152. One side of the second transmission gear 152 meshes with a third transmission gear 153 and a fourth transmission gear 154 meshing with the third transmission gear 153. The third transmission gear 153 is rotatably connected to the main shaft 2. The other side of the second transmission gear 152 meshes with a fifth transmission gear 155. Both the fourth transmission gear 154 and the fifth transmission gear 155 are connected to connecting shafts, and both connecting shafts are connected to connecting rods 9 at their ends that rotatably pass through the main shaft 2. Micro-robotic arms 10 are slidably mounted on both connecting rods 9, and TOFD probes 16 are mounted on the micro-robotic arms 10.

[0021] Two first servo motors 401, fixed to the front end of the trolley frame 8, drive two lead screw guides 7 to rotate. During rotation, the lead screw guides 7 drive the main shaft 2, threaded onto the lead screw guides 7, to move along the length of the lead screw guides 7. To increase stability, rollers can be added to both ends of the main shaft 2. These rollers are rolled on the edge of the trolley frame 8, providing stable support for the main shaft 2 and ensuring the stability of the detection device. This prevents the acquisition of defect signals from generating unnecessary noise due to equipment instability. By adjusting the second servo motor 402, fixed at the middle position of the main shaft 2, during rotation... The input gear 13 rotates, which in turn drives the first transmission gear 151 to rotate. During its rotation, the first transmission gear 151 drives the second transmission gear 152, which in turn drives the third transmission gear 153 and the fifth transmission gear 155. Simultaneously, the third transmission gear 153 drives the fourth transmission gear 154. At this point, the fourth transmission gear 154 and the fifth transmission gear 155 rotate relative to each other, thus causing each of them to drive its connected shaft to rotate. These two connecting shafts then drive the two connecting rods 9 to rotate. Figure 4 As shown, the two connecting rods 9 are arranged in a figure-eight shape, enabling relative rotation between the two connecting rods 9, thereby adjusting the positions of the two TOFD probes 16. Through multi-gear transmission, the transmission accuracy is improved, allowing for precise control of the two connecting rods 9. Furthermore, the micro-robotic arm 10 enables precise adjustment of the position of the TOFD probes 16, ensuring that the detection device can maintain contact between the probes and the surface being detected in different scenarios, thus guaranteeing the reliability of the detection.

[0022] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. An ultrasonic TOFD probe detection device with multi-angle conversion, characterized in that, Including the trolley frame, four corners below the trolley frame are provided with wheels, two lead screws are arranged on the trolley frame, the two ends of the lead screws are connected with lead screw seats arranged on the trolley frame, and the two sides of the front end of the trolley frame are connected with first servo motors through first motor flanges; the front ends of the two lead screws are connected with the output shafts of the first servo motors through the adjacent first motor flanges; a main shaft is arranged on the trolley frame, the two ends of the main shaft are threadedly sleeved on the two lead screws, the main shaft is connected with a second servo motor through a second motor flange, an input gear connected with the output shaft of the second servo motor, a first transmission gear meshed and connected with the input gear is arranged on one side of the main shaft, and a first transmission gear shaft connected with the first transmission gear is arranged; one end of the first transmission gear shaft away from the first transmission gear is rotatably arranged through the main shaft and connected with a second transmission gear, one side of the second transmission gear is meshed and connected with a third transmission gear and a fourth transmission gear connected with the third transmission gear, the other side of the second transmission gear is meshed and connected with a fifth transmission gear, the fourth transmission gear and the fifth transmission gear are connected with connecting shafts, one end of the two connecting shafts rotatably arranged through the main shaft is connected with a connecting rod, a micro mechanical arm is slidably arranged on the two connecting rods, and a TOFD probe is arranged on the micro mechanical arm.

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