Stainless steel plate electric resistance welding defect ultrasonic detection auxiliary device

Abstract

The utility model relates to the technical field of welding detection, in particular to a stainless steel plate electric resistance welding defect ultrasonic detection auxiliary device which comprises a top plate, two connecting rods are connected to the surface of one side of the top plate, clamping structures used for clamping ultrasonic probes are connected to the ends, away from the top plate, of the two connecting rods, and the two ultrasonic probes are located on the two sides of a stainless steel plate. And the plane where the two connecting rods are located is perpendicular to the surface of the stainless steel plate, so that the effect of improving the detection efficiency of ultrasonic resistance welding defect detection is achieved.

Description

Technical Field

[0001] This application relates to the field of welding inspection technology, and in particular to an auxiliary device for ultrasonic detection of defects in resistance welding of stainless steel plates. Background Technology

[0002] Ultrasonic testing for defects in resistance welds on stainless steel plates involves placing two ultrasonic probes on either side of the plate. One probe emits ultrasonic waves, while the other receives them. The intensity of the received ultrasonic waves is used to determine whether defects exist in the resistance weld. Currently, most testing methods involve using handheld ultrasonic probes to detect resistance weld defects, which results in low testing efficiency in order to meet the testing requirements of relevant standards. Utility Model Content

[0003] This application provides an auxiliary device for ultrasonic testing of resistance welding defects in stainless steel plates to improve the detection efficiency of ultrasonic testing.

[0004] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0005] An auxiliary device for ultrasonic testing of resistance welding defects in stainless steel plates includes a top plate. Two connecting rods are connected to one side surface of the top plate. The ends of the two connecting rods away from the top plate are connected to a clamping structure for holding ultrasonic probes. The two ultrasonic probes are located on both sides of the stainless steel plate, and the planes of the two connecting rods are perpendicular to the surface of the stainless steel plate.

[0006] By adopting the above scheme, when resistance welding defect detection is required, the ultrasonic probe is clamped using a clamping structure, and the two ultrasonic probes are placed on both sides of the stainless steel plate, aligned with the position to be detected. Then, the operator only needs to move the top plate to drive the two ultrasonic probes to move synchronously to detect resistance welding defects, thereby improving the detection efficiency of ultrasonic resistance welding defects.

[0007] Optionally, the connecting rod is connected to a top rod perpendicular to the connecting rod. One end of the top rod has a ball groove, and a rolling ball is provided in the ball groove. The rolling ball can roll in the ball groove and abuts against the surface of the steel plate.

[0008] By adopting the above scheme, a push rod is used to press against the surface of the stainless steel plate during testing, which avoids the auxiliary device from tilting during the testing process and causing inaccurate test results.

[0009] Optionally, the top rod surface is provided with a sliding hole, and the connecting rod surface is provided with a threaded hole. A threaded rod is threadedly connected in the threaded hole, the threaded rod passes through the sliding hole, and a limit plate is fixedly connected to one end of the threaded rod away from the threaded rod.

[0010] By adopting the above scheme, the threaded rod can slide in the sliding hole, thereby adjusting the distance between the two push rods, thus making it suitable for steel plates of different thicknesses. When fixing is required, simply screw the threaded rod into the threaded hole, and the limiting plate will press the push rod tightly to fix it.

[0011] Optionally, the top plate has two wheel sets on one side surface where the connecting rod is located, and the line connecting the two wheel sets is perpendicular to the line connecting the two connecting rods. The wheel set includes two connecting wheel plates and rolling bearings. The connecting wheel plates are perpendicular to the top plate, and the two ends of the rolling bearings are rotatably connected to the two connecting wheel plates respectively.

[0012] By adopting the above scheme, when performing defect detection, the rolling bearing rests against the upper surface of the stainless steel plate, and the rolling bearing rolls above the stainless steel plate when the ultrasonic probe moves, making the movement of the auxiliary device smoother.

[0013] Optionally, the top plate has a transmission cavity inside, and a through hole communicating with the transmission cavity is provided at the connection position between the top plate and the connecting rod. A transmission ring is rotatably connected in the transmission cavity and at the connection position with the through hole, and the transmission ring has an internal thread. A threaded post is provided at one end of the connecting rod that connects to the top plate. The threaded post passes through the through hole and is threadedly connected to the transmission ring.

[0014] By adopting the above scheme, rotating the transmission ring drives the threaded column to move along the axial direction, thereby adjusting the distance between the ultrasonic probe and the top plate, so that the ultrasonic probe can be applied to welding defects in different positions of the stainless steel plate.

[0015] Optionally, a second gear is fixedly connected to the outer circumferential surface of the transmission ring, and the two second gears simultaneously mesh with the first gear. The first gear is rotatably connected in the transmission cavity, and a rotating rod is fixedly connected to the center of the first gear. One end of the rotating rod passes through the top plate and is rotatably connected to the top plate.

[0016] By adopting the above scheme, the operator can rotate the rotating rod to drive the first gear to rotate, which in turn drives the second gear to rotate, and then drives the connecting rod to move in the axial direction, making it more convenient for the operator to adjust the position of the ultrasonic probe.

[0017] Optionally, the threaded column passes through one end of the top plate and is connected to the same connecting plate.

[0018] By adopting the above scheme, the rotation of the threaded column is restricted, making the transmission between the threaded column and the transmission ring smoother.

[0019] Optionally, the clamping structure includes a clamping ring, one end of which is hinged to the connecting rod, and the other end of which has a threaded hole with a fastening bolt threaded into it. A fastening screw hole is also provided on the surface of the connecting rod. When the clamping ring fixes the ultrasonic probe, the fastening bolt is screwed into the fastening screw hole.

[0020] By adopting the above method, when it is necessary to fix the ultrasonic probe, place the ultrasonic probe between the clamping ring and the connecting rod, and then screw the fastening bolt into the fastening screw hole to fix the ultrasonic probe.

[0021] In summary, this application has the following technical effects:

[0022] 1. By setting up a top plate, connecting rod and clamping structure, the operator can move two ultrasonic probes at the same time, thereby making the ultrasonic detection efficiency of resistance welding defects faster.

[0023] 2. By incorporating a push rod and ball bearings, the movement of the ultrasonic probe is made more stable;

[0024] 3. The installation of rolling bearings makes the movement of the detection auxiliary device smoother. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a front view of the overall structure of this application;

[0027] Figure 3 This application is intended to emphasize a portion of the structural diagram at the connecting rod.

[0028] Figure 4 This is a partial structural cross-sectional view intended to emphasize the internal structure of the roof slab in this application.

[0029] In the diagram, 1 is the top plate; 11 is the transmission cavity; 12 is the transmission ring; 13 is the first gear; 14 is the second gear; 15 is the rotating rod; 2 is the connecting rod; 3 is the push rod; 31 is the ball; 32 is the sliding hole; 33 is the threaded rod; 331 is the limiting plate; 4 is the rolling bearing; 41 is the connecting wheel plate; 5 is the threaded column; 51 is the connecting plate; 6 is the clamping ring; and 61 is the fastening bolt. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] Reference Figure 1An auxiliary device for ultrasonic testing of resistance welding defects in stainless steel plates includes a top plate 1. Two connecting rods 2 are connected to one side of the top plate 1. A clamping structure for holding ultrasonic probes is connected to the end of each connecting rod 2 facing away from the top plate 1. The two ultrasonic probes are located on both sides of the stainless steel plate, and the plane of the two connecting rods 2 is perpendicular to the surface of the stainless steel plate. When resistance welding defect detection is required, the clamping structure is used to hold the ultrasonic probes, and the two ultrasonic probes are placed on both sides of the stainless steel plate, aligned with the location to be detected. Then, the operator only needs to move the top plate 1 to drive the two ultrasonic probes to move synchronously to detect resistance welding defects, thereby improving the detection efficiency of ultrasonic testing for resistance welding defects.

[0032] Reference Figure 2 and Figure 3 The connecting rod 2 is connected to a top rod 3 perpendicular to the connecting rod 2. One end of the top rod 3 has a ball groove containing a rolling ball 31 that can roll within the groove and rest against the surface of the steel plate. A sliding hole 32 is formed on the surface of the top rod 3, and a threaded hole is formed on the surface of the connecting rod 2. A threaded rod 33 is threaded into the threaded hole, passing through the sliding hole 32. A limiting plate 331 is fixedly connected to the end of the threaded rod 33 facing away from the threaded rod 33. This allows the threaded rod 33 to slide within the sliding hole 32, thereby adjusting the distance between the two top rods 3 to accommodate steel plates of different thicknesses. When fixing is required, simply screw the threaded rod 33 into the threaded hole, causing the limiting plate 331 to press the top rod 3 firmly, thus fixing the top rod 3. During defect detection, a rolling bearing 4 rests against the upper surface of the stainless steel plate. As the ultrasonic probe moves, the rolling bearing 4 rolls above the stainless steel plate, facilitating smoother movement of the auxiliary device.

[0033] Reference Figure 1 and Figure 2 The top plate 1 has two wheel sets on one side of the connecting rod 2, and the line connecting the two wheel sets is perpendicular to the line connecting the two connecting rods 2. Each wheel set includes two connecting wheel plates 41 and rolling bearings 4. The connecting wheel plates 41 are perpendicular to the top plate 1, and the two ends of the rolling bearings 4 are rotatably connected to the two connecting wheel plates 41 respectively. During defect detection, the rolling bearings 4 rest against the upper surface of the stainless steel plate. When the ultrasonic probe moves, the rolling bearings 4 roll above the stainless steel plate, making the movement of the auxiliary device smoother.

[0034] Reference Figure 1 and Figure 4The top plate 1 has a transmission cavity 11 inside. A through hole communicating with the transmission cavity 11 is provided at the connection point between the top plate 1 and the connecting rod 2. A transmission ring 12 is rotatably connected to the through hole within the transmission cavity 11, and the transmission ring 12 has internal threads. A threaded post 5 is provided at the end of the connecting rod 2 that connects to the top plate 1. The threaded post 5 passes through the through hole and is threadedly connected to the transmission ring 12. The threaded post 5 passes through the top plate 1 and is connected to the same connecting plate 51. A second gear 14 is fixedly connected to the outer circumferential surface of the transmission ring 12, and two second gears 14 simultaneously mesh with a first gear 13. The first gear 13 is rotatably connected within the transmission cavity 11. A rotating rod 15 is fixedly connected to the center of the first gear 13, and one end of the rotating rod 15 extends out of the top plate 1 and is rotatably connected to the top plate 1. The operator can rotate the rotating rod 15 to drive the first gear 13 to rotate, thereby driving the second gear 14 to rotate, and thus driving the connecting rod 2 to move axially, making it easier for the operator to adjust the position of the ultrasonic probe.

[0035] Reference Figure 3 The clamping structure includes a clamping ring 6, one end of which is hinged to the connecting rod 2. The other end of the clamping ring 6 has a threaded hole with a fastening bolt 61 threaded into it. A fastening screw hole is also provided on the surface of the connecting rod 2. When the clamping ring 6 secures the ultrasonic probe, the fastening bolt 61 is screwed into the fastening screw hole. To secure the ultrasonic probe, place it between the clamping ring 6 and the connecting rod 2, then screw the fastening bolt 61 into the fastening screw hole.

[0036] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An ultrasonic testing auxiliary device for resistance welding defects of stainless steel plates, characterized by: The utility model provides a kind of ultrasonic probe fixing device, including top plate (1), two connecting rods (2) are connected on the one side surface of top plate (1), the clamping structure for clamping ultrasonic probe is connected at the end of two connecting rods (2) away from top plate (1), two ultrasonic probes are located on the both sides of stainless steel plate, and the plane of two connecting rods (2) is perpendicular to the surface of stainless steel plate.

2. The apparatus for assisting ultrasonic inspection of electric resistance welded defects of stainless steel sheets according to claim 1, characterized by: The connecting rod (2) is connected with the top rod (3) perpendicular to the connecting rod (2), the top rod (3) is provided with a ball groove at one end, a ball (31) is arranged in the ball groove, and the ball (31) can roll in the ball groove, and the ball (31) is abutted against the surface of the steel plate.

3. The apparatus according to claim 2, wherein: The surface of the top rod (3) is provided with a sliding hole (32), a threaded hole is formed on the surface of the connecting rod (2), a threaded rod (33) is threadedly connected in the threaded hole, the threaded rod (33) passes through the sliding hole (32), and the end of the threaded rod (33) away from the threaded rod (33) is fixedly connected with a limiting plate (331).

4. The apparatus for assisting ultrasonic inspection of electric resistance welded defects of stainless steel sheets according to claim 1, characterized by: The one side surface of the top plate (1) is provided with two wheel sets, and the line connecting the two wheel sets is perpendicular to the line connecting the two connecting rods (2), the wheel set comprises two connecting wheel plates (41) and a rolling bearing (4), the connecting wheel plates (41) are perpendicular to the top plate (1), and the two ends of the rolling bearing (4) are rotatably connected with the two connecting wheel plates (41) respectively.

5. The apparatus for assisting ultrasonic inspection of electric resistance welded defects of stainless steel plates according to claim 1, characterized in that: The inside of the top plate (1) is provided with a transmission cavity (11), a through hole is formed on the connecting position of the top plate (1) and the connecting rod (2) and communicates with the transmission cavity (11), a transmission ring (12) is rotatably connected in the transmission cavity (11) and communicates with the through hole, an internal thread is formed in the transmission ring (12), a threaded column (5) is arranged at the end of the connecting rod (2) connected with the top plate (1), the threaded column (5) passes through the through hole and is threadedly connected with the transmission ring (12).

6. The apparatus for assisting ultrasonic inspection of electric resistance welded defects of stainless steel sheets according to claim 5, characterized by: The outside circumferential surface of the transmission ring (12) is fixedly connected with a second gear (14), and the two second gears (14) simultaneously mesh with a first gear (13), the first gear (13) is rotatably connected in the transmission cavity (11), the center of the first gear (13) is fixedly connected with a rotating rod (15), one end of the rotating rod (15) passes through the top plate (1) and is rotatably connected with the top plate (1).

7. The apparatus according to claim 6, wherein: The same connecting plate (51) is connected at the end of the threaded column (5) passing through the top plate (1).

8. The apparatus for assisting ultrasonic inspection of electric resistance welded defects of stainless steel sheets according to claim 1, characterized by: The clamping structure comprises a clamping ring (6), one end of the clamping ring (6) is hingedly connected with the connecting rod (2), a threaded hole is formed at the other end of the clamping ring (6), a fastening bolt (61) is threadedly connected in the threaded hole, a fastening screw hole is formed on the surface of the connecting rod (2), and when the clamping ring (6) fixes the ultrasonic probe, the fastening bolt (61) is screwed into the fastening screw hole.

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