An auxiliary device for cylindrical equipment weld surface quality defect detection

Abstract

The present application relates to the technical field of weld quality detection, in particular to an auxiliary device for columnar equipment weld surface quality defect detection, comprising: a clamping base clamped outside the columnar equipment to be detected; a rotating bracket coaxially arranged on the clamping base; an acquisition support coaxially arranged on the rotating bracket and height-adjustably arranged on the clamping base, wherein the acquisition support is provided with an acquisition instrument for detecting the weld of the columnar equipment to be detected and is used for adjusting the position of the acquisition instrument. The auxiliary device provided by the present application can provide stable positioning effect for the acquisition instrument, and the clamping base can stably arrange the acquisition instrument outside the columnar equipment to be detected. The rotating bracket can adjust the horizontal position of the acquisition instrument, so that the acquisition instrument can conveniently detect different positions on the outer surface of the columnar equipment.

Description

Technical Field

[0001] This invention relates to the field of weld quality inspection technology, and more specifically to an auxiliary device for detecting surface quality defects in welds of columnar equipment. Background Technology

[0002] Currently, the surface quality inspection of circumferential welds on high-value cylindrical equipment or workpieces is usually carried out by manual visual inspection. Defects such as inclusions, incomplete welds, burrs, and color differences are detected manually. The quality inspection results are affected by the skill level of the inspectors, which can lead to slightly poor consistency and cannot provide a high-quality dataset for subsequent quality defect analysis.

[0003] In the industrial manufacturing sector, especially in areas involving the intelligent upgrading of digital factories, it is necessary to leverage new-generation information technologies and methods to improve the effectiveness and efficiency of quality inspection. Machine vision and laser scanning are commonly used methods. Machine vision is used to identify surface defects, while laser scanning is used to obtain geometric feature dimensions. The collected visual images and 3D geometric features are compared with quality defect samples and geometric dimension requirements to determine the surface quality level of the weld, thus assisting in manual quality inspection.

[0004] However, due to the extremely stringent requirements for weld inspection of high-value cylindrical equipment, using single optical and single laser scanning methods to acquire images and geometric features of the weld surface separately will lead to poor consistency. Furthermore, since the weld surface has a certain curvature, a single acquisition method may result in missed detections and is not conducive to obtaining high-quality dataset samples for quality inspection training. Therefore, there is an urgent need for an auxiliary device for detecting quality defects on the surface of welds in cylindrical equipment, to achieve an integrated acquisition device for surface defect images and features of circumferential welds of cylindrical equipment with different diameters, thereby improving acquisition consistency and reducing the rate of missed defect detections. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an auxiliary device for detecting surface quality defects in welds of columnar equipment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an auxiliary device for detecting surface quality defects in welds of columnar equipment, comprising: The clamping base clamps onto the outside of the cylindrical device to be tested; A rotating bracket is rotatably mounted on the clamping base and remains coaxial with the clamping base; A data acquisition bracket, height adjustable, is mounted on the rotating bracket and coaxial with the clamping base. The data acquisition bracket is equipped with a data acquisition instrument for detecting the weld seam of the cylindrical device under test and for adjusting the position of the data acquisition instrument.

[0007] Furthermore, the clamping base includes: Multiple sets of interlocking base supports are clamped to the outside of the cylindrical device to be tested; Multiple sets of interlocking base brackets are height-adjustable and mounted on the base support. The base brackets are provided with fixing pins at intervals for limiting their position with the base support, and springs are sleeved on the outside of the fixing pins. The drive motor is mounted on the base bracket via a motor bracket and is used to drive the rotating bracket to rotate.

[0008] Furthermore, the base support includes two vertically distributed claws for clamping onto the columnar device, a support rod disposed on the claws, two spaced-apart connecting rods for connecting the two support rods, and a splicing ring disposed on the inner side of the connecting rod for splicing together. The base bracket includes bracket rings for splicing with each other, a bracket rod rotatably mounted on the bracket ring and rotatably connected to the connecting rod on the outside and the support rod on the top, and a tightening nut for locking it.

[0009] Furthermore, the rotating bracket includes: Multiple interconnected bracket slip rings, each bracket slip ring having an inner groove and an embedded plate that slides within the groove on the bracket ring; The drive teeth are located on the bottom outer side of the bracket slip ring and are used to mesh with the output end of the drive motor and drive the bracket slip ring to rotate under the drive of the drive motor. The lead screw seat is evenly distributed on the bracket slip ring, and the bracket lead screw is rotatably installed inside it; Multiple interconnected bracket wheels are arranged in a ring and rotated within a lead screw seat. The inner side of each bracket wheel is provided with internal teeth, and the lead screw is provided with a bracket gear that meshes with the internal teeth.

[0010] Furthermore, the acquisition bracket includes: Multiple interconnected support rings, each support ring having a screw nut that mates with the bracket screw; Multiple mounting brackets, used to mount the data acquisition instruments, are evenly distributed on the outer side of the support ring; An adjustment component, mounted on the mounting bracket, is used to adjust the position of the data acquisition instrument.

[0011] Furthermore, the adjusting member includes: The adjusting screw is rotatably mounted on the mounting bracket with its axis pointing toward the center of the bracket ring; A sliding seat is slidably mounted on the mounting bracket and threaded onto the outside of the adjusting screw; the data acquisition instrument is mounted on the sliding seat. A drive mechanism is used to drive the adjusting screw to rotate, thereby adjusting the distance between the data acquisition instrument and the cylindrical device under test.

[0012] Furthermore, the drive mechanism includes: Multiple interlocking base frame rings are rotatably mounted on the support ring, and the upper surface of the base frame ring is provided with a toothed ring; One end of the adjusting screw is provided with a base gear for meshing with the gear ring; A rotating handwheel is mounted on the support ring, with one end of the rotating handwheel extending above the gear ring and equipped with a rotating gear for driving the gear ring to rotate.

[0013] Furthermore, the sliding seat is provided with a mounting bracket, the top of the mounting bracket is provided with a placement slot for placing the acquisition instrument, the side of the placement slot is provided with a tightening screw for positioning the acquisition instrument in the placement slot, and the end of the tightening screw that contacts the acquisition instrument is provided with a tightening plate.

[0014] Furthermore, it also includes a tilt adjustment unit for adjusting the tilt angle of the mounting bracket, the tilt adjustment unit comprising: The support slide is fixed to the bottom of the bracket ring, the passive frame is fixed to the bottom of the mounting frame, and the drive link passes through the support slide. The drive link is provided with an inclined slot at one end of the passive frame, and the passive frame is provided with a rod inserted into the slot. An actuating element is disposed between the support slide and the driven frame, and is used to drive the drive linkage to move.

[0015] Furthermore, the actuating component includes multiple interlocking dials, which are rotatably disposed above the drive linkage. The dials are provided with arc-shaped grooves, and the drive linkage is provided with a limiting rod inserted into the arc-shaped grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The auxiliary device provided by this invention can provide a stable positioning effect for the acquisition instrument. The clamping base can stably position the acquisition instrument on the outside of the cylindrical device to be tested. The rotating bracket can adjust the position of the acquisition instrument in the horizontal direction, thereby facilitating the acquisition instrument to detect different positions on the outer surface of the cylindrical device. By setting the acquisition bracket height adjustable on the rotating bracket, the height of the acquisition instrument in the vertical direction can be adjusted, thereby facilitating the use of the acquisition instrument. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram illustrating the usage state of an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of a clamping base according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of a base bracket according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of a base bracket according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of a rotating bracket according to an embodiment of the present invention.

[0023] Figure 7 for Figure 6 An enlarged schematic diagram of part A in the middle.

[0024] Figure 8 This is a schematic diagram of the structure of a data acquisition bracket according to an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of an adjusting member according to an embodiment of the present invention.

[0026] Figure 10 for Figure 8 Enlarged diagram of part B.

[0027] Figure 11 This is a schematic diagram of the structure of a rotating handwheel according to an embodiment of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the base ring and the slider in one embodiment of the present invention.

[0029] Figure 13 This is a schematic diagram of the slider structure according to an embodiment of the present invention.

[0030] In the diagram: 1. Clamping base; 2. Rotating bracket; 3. Data acquisition bracket; 5. Data acquisition instrument; 11. Base bracket; 12. Base support; 13. Fixing pin; 14. Spring; 15. Drive motor; 16. Motor bracket; 111. Claw; 112. Support rod; 113. Connecting rod; 114. Splicing ring; 121. Bracket ring; 122. Bracket rod; 123. Tightening nut; 21. Bracket slip ring; 211. Groove; 124. Embedded plate; 22. Drive gear; 23. Lead screw seat; 24. Bracket lead screw; 25. Bracket dial wheel; 26. Internal gear; 27. Bracket gear; 31. Bracket ring; 311. Lead screw nut; 32. Mounting bracket; 33. Adjusting component 331. Adjusting screw; 332. Sliding seat; 333. Guide rail; 334. Drive mechanism; 3341. Base ring; 3342. Gear ring; 3343. Base gear; 3344. Rotary handwheel; 3345. Rotary gear; 3346. Slider; 33461. Base plate; 33462. Clamping plate; 34. Mounting bracket; 341. Placement slot; 342. Tightening screw; 343. Tightening plate; 344. Scale; 345. Pointer; 4. Tilt adjustment unit; 41. Support slide; 42. Passive frame; 43. Drive linkage; 44. Slot; 45. Insert rod; 46. Actuator; 461. Dial; 462. Arc groove; 463. Limit rod. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-2 The present invention provides an auxiliary device for detecting surface quality defects in welds of columnar equipment, comprising: Clamping base 1, clamped to the outside of the cylindrical device to be tested; The rotating bracket 2 is rotatably mounted on the clamping base 1 and is coaxial with the clamping base 1; The acquisition bracket 3 is height-adjustable and is mounted on the rotating bracket 2 and is coaxial with the clamping base 1. The acquisition bracket 3 is equipped with an acquisition instrument 5 for detecting the weld of the columnar device under test and for adjusting the position of the acquisition instrument 5.

[0033] Before use, the clamping base 1 is installed on the outside of the cylindrical device to be tested, and the rotating bracket 2 is installed on the clamping base 1. Then, the acquisition bracket 3 is installed on the rotating bracket 2, and the acquisition instrument 5 is installed on the acquisition bracket 3. During use, the spatial position of the acquisition instrument 5 can be adjusted by the clamping base 1 in conjunction with the rotating bracket 2 and the acquisition bracket 3, thereby facilitating the use of the acquisition instrument 5. The acquisition instrument 5 is an existing image acquisition instrument. The specific structure is not described in detail here. It can realize the all-round detection of the weld of the cylindrical device, solve the defects of the existing single optical and single laser scanning methods, improve the acquisition consistency and reduce the defect missed detection rate.

[0034] Please see Figure 3 In one embodiment, the clamping base 1 includes: Multiple sets of interlocking base supports 11 are clamped on the outside of the cylindrical device to be tested; Multiple sets of interlocking base brackets 12 are height-adjustable and mounted on the base support 11. Each base bracket 12 is provided with a fixed pin 13 for limiting its position against the base support 11. A spring 14 is sleeved on the outside of each fixed pin 13. The top end of each fixed pin 13 is fixed to the base bracket 12. The base support 11 is provided with a pin hole for inserting the fixed pin 13. The spring 14 is sleeved on the outside of the fixed pin 13 and extends between the base support 11 and the base bracket 12. The drive motor 15 is mounted on the base bracket 12 via a motor bracket 16. The motor bracket 16 is fixed on the base bracket 12 and is used to drive the rotating bracket 2 to rotate.

[0035] This design, by setting the base bracket 11, allows the entire clamping base 1 to be easily clamped on the outside of the cylindrical device to be tested, achieving stable positioning. By setting the height-adjustable base bracket 12, the height of the base bracket 12 can be adjusted according to actual needs. Furthermore, by setting the fixing pin 13 and the spring 14, the base bracket 12 can be limited during the height adjustment process, so that the base bracket 12 can only move in the vertical direction. By setting the drive motor 15, the rotating bracket 2 can be driven to rotate.

[0036] Please see Figure 4-5 In one embodiment, the base support 11 includes two vertically distributed claws 111 for clamping onto the columnar device, a support rod 112 disposed on the claws 111, two spaced-apart connecting rods 113 for connecting the two support rods 112, and a splicing ring 114 disposed on the inner side of the connecting rod 113 for splicing together. The base bracket 12 includes a bracket ring 121 for splicing with each other, a bracket rod 122 rotatably mounted on the bracket ring 121 and rotatably connected to the connecting rod 113 on the outside and the support rod 112 on the top, and a tightening nut 123 for locking it.

[0037] This design, through the vertically distributed jaws 111 and the interlocking of multiple base supports 11, allows the base supports 11 to be clamped onto the outside of the cylindrical device under test. One end of the support rod 112 is rotatably connected to the jaws 111, and the other end is rotatably connected to both ends of the outer connecting rod 113. This allows for easy adjustment of the height of the outer connecting rod 113 by adjusting the angle of the support rod 112. The bracket rod 122 is connected to the top support rod 112 and the outer connecting rod 113 by tightening the nut 12. 3. The joint rotation connection allows for height adjustment of the bracket ring 121 during the height adjustment of the outer connecting rod 113. The inner connecting rod 113 is provided with splicing rings 114 that are spliced ​​together. The splicing rings 114 facilitate the insertion of the bottom end of the fixing pin 13 and establish the connection between the splicing rings 114 and the bracket ring 121. This allows the splicing rings 114 and the bracket ring 121 to be coaxially set under the action of the fixing pin 13, and the bracket ring 121 can move vertically under the limiting pin of the fixing pin 13.

[0038] Please see Figure 6-7 In one embodiment, the rotating bracket 2 includes: Multiple interconnected bracket slip rings 21, the inner side of the bracket slip ring 21 is provided with a groove 211, and the bracket ring 121 is provided with an embedded plate 124 that slides in the groove 211, the embedded plate 124 having an L-shaped structure; The drive tooth 22 is located on the outer bottom of the bracket slip ring 21 and is used to mesh with the output end of the drive motor 15 and drive the bracket slip ring 21 to rotate under the drive of the drive motor 15. The lead screw seat 23 is evenly distributed on the bracket slip ring 21, and the bracket lead screw 24 is rotatably arranged inside it; Multiple interconnected bracket wheels 25 are arranged in a ring and rotated within the lead screw seat 23. The inner side of each bracket wheel 25 is provided with internal teeth 26, and the bracket lead screw 24 is provided with a bracket gear 27 that meshes with the internal teeth 26.

[0039] This design, by setting a bracket slip ring 21 and an insert groove 211 on the inner side of the bracket slip ring 21, and an insert plate 124 on the bracket ring 121 that slides in the insert groove 211, establishes a connection between the bracket ring 121 and the bracket slip ring 21, allowing the bracket slip ring 21 to rotate on the bracket ring 121. When the drive motor 15 is turned on, it drives the drive gear 22 and the bracket slip ring 21 to rotate, causing the lead screw seat 23 to move with the bracket slip ring 21. The bracket gear 27 on the lead screw seat 23 meshes with the internal gear 26 on the bracket dial wheel 25. During the movement, the bracket gear 27 and the internal gear 26 cooperate to realize the rotation of the bracket lead screw 24, thereby realizing the height adjustment of the acquisition bracket 3.

[0040] Preferably, the bracket dial 25 is manually operated, or driven by the lower drive motor 15 to rotate the lead screw. When the drive motor 15 is turned on, the output end of the drive motor 15 engages with the drive gear 22, causing the drive gear 22 and the bracket slip ring 21 to rotate. The lead screw seat 23 rotates along with the bracket slip ring 21. The bracket gear 27 on the bracket lead screw 24 engages with the internal gear 26 on the bracket dial 25, thereby driving the bracket lead screw 24 to rotate during this process, thus adjusting the height of the acquisition bracket 3. With this design, during manual operation, the internal gear 26 on the bracket dial 25 engages with the bracket gear 27, enabling the rotation of the bracket lead screw 24. Rotation of the bracket lead screw 24 can also be achieved by driving it with the drive motor 15.

[0041] Please see Figure 8 and 10 In one embodiment, the acquisition bracket 3 includes: Multiple interconnected support rings 31, each support ring 31 being provided with a screw nut 311 that cooperates with the bracket screw 24; Multiple mounting brackets 32 are used to mount the data acquisition instrument 5. One end of the bracket is mounted on the support ring 31 by a rotating pin, and they are evenly distributed on the outer side of the support ring 31. Adjustment component 33 is disposed on the mounting bracket 32 ​​and is used to adjust the position of the acquisition instrument 5.

[0042] This design, by setting a support ring 31 and a screw nut 311 on the support ring 31, allows the support ring 31 to move vertically in cooperation with the bracket screw 24. By setting multiple mounting brackets 32, it is convenient to install the data acquisition instrument 5. Furthermore, by setting an adjusting component 33, the position of the data acquisition instrument 5 can be adjusted, making it convenient to use.

[0043] Please see Figure 9 In one embodiment, the adjusting member 33 includes: The adjusting screw 331 is rotatably mounted on the mounting bracket 32 ​​with its axis oriented toward the center of the bracket ring 31; A sliding seat 332 is slidably mounted on the mounting frame 32 and threaded onto the outside of the adjusting screw 331. The acquisition instrument 5 is mounted on the sliding seat 332. A guide rail 333 is provided on the mounting frame 32. The sliding seat 332 is slidably mounted on the guide rail 333, and the guide rail 333 can limit the sliding seat 332, so that the sliding seat 332 moves horizontally following the rotation of the adjusting screw 331. The drive mechanism 334 is used to drive the adjusting screw 331 to rotate and adjust the distance between the acquisition instrument 5 and the cylindrical device to be measured.

[0044] With this design, by setting up a sliding seat 332 and an adjusting screw 331, when the driving mechanism 334 drives the adjusting screw 331 to rotate, it can drive the sliding seat 332 to slide on the mounting frame 32 in a limited position, thereby realizing the adjustment of the horizontal distance between the data acquisition instrument 5 and the device under test.

[0045] like Figure 8 , 11 As shown in Figure 13, in one embodiment, the drive mechanism 334 includes: Multiple interconnected base rings 3341 are rotatably mounted on the support ring 31. A slider 3346 is fixedly mounted on the base ring 3341. The slider 3346 is slidably mounted on the support ring 31 and includes a base plate 33461 fixed on the base ring 3341 and a retaining plate 33462 slidably mounted on the support ring 31. A toothed ring 3342 is provided on the upper surface of the base ring 3341, and a groove 33411 is provided on the side wall of the base ring 3341 for the retaining plate 33462 to slide. One end of the adjusting screw 331 is provided with a base gear 3343 for meshing with the gear ring 3342; A rotating handwheel 3344 is disposed on the bracket ring 31. One end of the rotating handwheel 3344 extends above the gear ring 3342 and is provided with a rotating gear 3345 for driving the gear ring 3342 to rotate.

[0046] With this design, the rotating handwheel 3344 rotates, and the rotating gear 3345 meshes with the gear ring 3342 to rotate the base ring 3341. During the rotation of the base ring 3341, the gear ring 3342 can drive the adjusting screw 331 to rotate by meshing with the base gear 3343, thereby providing power to the adjusting screw 331.

[0047] In one embodiment, a mounting bracket 34 is provided on the sliding seat 332. The top of the mounting bracket 34 is provided with a placement groove 341 for placing the data acquisition instrument 5. A tightening screw 342 for positioning the data acquisition instrument 5 in the placement groove 341 is provided on the side of the placement groove 341. A tightening plate 343 is provided at the end of the tightening screw 342 that contacts the data acquisition instrument 5. This design facilitates the installation of the data acquisition instrument 5 by providing a mounting bracket 34 on the sliding seat 332, and the tightening screw 342 and the tightening plate 343 can position the data acquisition instrument 5 in the placement groove 341, achieving stable installation of the data acquisition instrument 5.

[0048] Preferably, the mounting bracket 32 ​​has a scale 344 on its side wall, and the sliding seat 332 has a pointer 345 for indication. This design allows for the quantification of the distance between the acquisition instrument 5 and the cylindrical device under test, thus facilitating adjustment based on the position of the scale 344 indicated by the pointer 345.

[0049] In one embodiment, a tilt adjustment unit 4 is further included for adjusting the tilt angle of the mounting bracket 32, the tilt adjustment unit 4 comprising: The support slide 41 is fixed to the bottom of the bracket ring 31, the passive frame 42 is fixed to the bottom of the mounting frame 32, and the drive link 43 passes through the support slide 41. The drive link 43 is provided with an inclined slot 44 at one end of the passive frame 42, and the passive frame 42 is provided with a plug 45 inserted into the slot 44. The actuating element 46 is disposed between the support slide 41 and the passive frame 42, and is used to drive the drive linkage 43 to move, thereby limiting the insertion rod 45 through the inclined slot 44, realizing the adjustment of the tilt angle of the mounting frame 32, that is, realizing the adjustment of the tilt angle of the acquisition instrument 5.

[0050] This design allows the drive rod 43 to move via the toggle 46, enabling the insertion rod 45 to move within the inclined slot 44. Under the action of the inclined slot 44, the end of the mounting frame 32 away from the acquisition bracket 3 can move vertically, thus achieving fine adjustment of the tilt angle of the mounting frame 32 and further facilitating the use of the acquisition instrument 5.

[0051] In one embodiment, the actuating element 46 includes a plurality of interlocking dials 461 rotatably disposed above the drive link 43. Each dial 461 has an arc-shaped groove 462, and the drive link 43 has a limiting rod 463 inserted into the arc-shaped groove 462. The support slide 41 has a guide groove for sliding the dials 461. This design allows the limiting rod 463 to move within the arc-shaped groove 462 during dial rotation, thereby driving the drive link 43 to move horizontally. This, in turn, allows the insertion rod 45 to move within the inclined slot 44, thus enabling fine-tuning of the tilt angle of the mounting bracket 32.

[0052] Preferably, the slots 44 of adjacent tilt adjustment units 4 have different tilt directions, which is used to adjust the tilt angle of the mounting bracket 32 ​​in different directions. This design allows for adjustment of the tilt angle of adjacent mounting brackets 32 in different directions by setting different tilt directions, including upward or downward tilt, thereby expanding the acquisition area of ​​the acquisition instrument 5.

[0053] Preferably, in the three adjacent mounting brackets 32, two of the mounting brackets 32 are provided with tilt angle adjustment units 4 with different tilt directions of the slots 44. This design allows the data acquisition instruments 5 on the three mounting brackets 32 to acquire information from different angles, thereby expanding the acquisition area of ​​the data acquisition instruments 5.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. An auxiliary device for detecting surface quality defects in welds of columnar equipment, characterized in that, include: Clamping base (1), clamped on the outside of the cylindrical device to be tested; The rotating bracket (2) is rotatably mounted on the clamping base (1) and is coaxial with the clamping base (1); The acquisition bracket (3) is height-adjustable and is set on the rotating bracket (2) and is coaxial with the clamping base (1). The acquisition bracket (3) is equipped with an acquisition instrument (5) for detecting the weld of the columnar device to be tested and for adjusting the position of the acquisition instrument (5).

2. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 1, characterized in that, The clamping base (1) includes: Multiple sets of interlocking base supports (11) are clamped on the outside of the cylindrical device to be tested; Multiple sets of interlocking base brackets (12) are height-adjustable on the base support (11). Fixed pins (13) for limiting the position of the base support (11) are distributed at intervals on the base brackets (12). Springs (14) are sleeved on the outside of the fixed pins (13). The drive motor (15) is mounted on the base bracket (12) via the motor bracket (16) and is used to drive the rotating bracket (2) to rotate.

3. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 2, characterized in that, The base support (11) includes two vertically distributed claws (111) for clamping on the columnar device, a support rod (112) disposed on the claws (111), two spaced-apart connecting rods (113) for connecting the two support rods (112), and a splicing ring (114) disposed on the inner side of the connecting rod (113) for splicing with each other. The base bracket (12) includes a bracket ring (121) for splicing with each other, a bracket rod (122) rotatably mounted on the bracket ring (121) and rotatably connected to the connecting rod (113) on the outside and the support rod (112) on the top, and a tightening nut (123) for locking it.

4. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 3, characterized in that, The rotating bracket (2) includes: Multiple interconnected bracket slip rings (21), the inner side of the bracket slip ring (21) is provided with a groove (211), and the bracket ring (121) is provided with an embedded plate (124) that slides in the groove (211); The drive tooth (22) is located on the bottom outer side of the bracket slip ring (21) and is used to mesh with the output end of the drive motor (15) and drive the bracket slip ring (21) to rotate under the drive of the drive motor (15). The lead screw seat (23) is evenly distributed on the bracket slip ring (21), and the bracket lead screw (24) is rotatably arranged inside it; Multiple interconnected bracket wheels (25) are arranged in a ring and rotated within the lead screw seat (23). The inner side of each bracket wheel (25) is provided with internal teeth (26), and the bracket lead screw (24) is provided with a bracket gear (27) that meshes with the internal teeth (26).

5. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 4, characterized in that, The acquisition bracket (3) includes: Multiple interconnected support rings (31), each support ring (31) is provided with a screw nut (311) that cooperates with the bracket screw (24); Multiple mounting brackets (32) are used to mount the acquisition instrument (5) and are evenly distributed on the outside of the bracket ring (31); An adjustment component (33) is provided on the mounting bracket (32) for adjusting the position of the acquisition instrument (5).

6. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 5, characterized in that, The adjusting member (33) includes: The adjusting screw (331) is rotatably mounted on the mounting bracket (32) with its axis pointing toward the center of the bracket ring (31); A sliding seat (332) is slidably mounted on the mounting bracket (32) and threaded onto the outside of the adjusting screw (331). The acquisition instrument (5) is mounted on the sliding seat (332). The drive mechanism (334) is used to drive the adjusting screw (331) to rotate and adjust the distance between the acquisition instrument (5) and the cylindrical device to be measured.

7. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 6, characterized in that, The drive mechanism (334) includes: Multiple interlocking base rings (3341) are rotatably mounted on the support ring (31), and a toothed ring (3342) is provided on the upper surface of the base ring (3341). One end of the adjusting screw (331) is provided with a base gear (3343) for meshing with the gear ring (3342); A rotating handwheel (3344) is provided on the bracket ring (31). One end of the rotating handwheel (3344) extends above the gear ring (3342) and is provided with a rotating gear (3345) for driving the gear ring (3342) to rotate.

8. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 6, characterized in that, The sliding seat (332) is provided with a mounting bracket (34), the top of the mounting bracket (34) is provided with a placement slot (341) for placing the acquisition instrument (5), the side of the placement slot (341) is provided with a tightening screw (342) for positioning the acquisition instrument (5) in the placement slot (341), and the end of the tightening screw (342) that contacts the acquisition instrument (5) is provided with a tightening plate (343).

9. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 7, characterized in that, It also includes a tilt adjustment unit (4) for adjusting the tilt angle of the mounting bracket (32), the tilt adjustment unit (4) comprising: The support slide (41) is fixed to the bottom of the bracket ring (31), the passive frame (42) is fixed to the bottom of the mounting frame (32), and the drive link (43) passes through the support slide (41). The drive link (43) is provided with an inclined slot (44) at one end of the passive frame (42), and the passive frame (42) is provided with a plug (45) inserted into the slot (44). A toggle element (46) is disposed between the support slide (41) and the passive frame (42) for driving the drive link (43) to move.

10. The auxiliary device for detecting surface quality defects in welds of columnar equipment according to claim 7, characterized in that, The actuating component (46) includes a plurality of interlocking dials (461), which are rotatably disposed above the drive link (43). The dials (461) are provided with arc-shaped grooves (462), and the drive link (43) is provided with a limiting rod (463) inserted into the arc-shaped grooves (462).

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