A device and method for detecting cracks in a pressure-bearing equipment

Abstract

The application provides a crack detection device and method for pressure-bearing equipment, and solves the problem that the bottom of a detection object cannot be detected because the detection object is placed on the top of a placement partition. The device comprises a detection box, wherein a box door is arranged on the detection box, a base is fixedly connected to the bottom of the detection box, an arc-shaped plate is arranged in the detection box, a detection instrument is arranged on the arc-shaped plate, a rotating adjustment structure matched with the arc-shaped plate is arranged on the detection box, a reciprocating sliding assembly matched with the detection instrument is arranged on the arc-shaped plate, two mounting seats are arranged in the detection box, two rotating frames are arranged on the mounting seats, a clamping plate is fixedly connected to the rotating frame, and a different-direction damping rotating mechanism matched with the two rotating frames is arranged on the mounting seat. The device is convenient for detecting different positions on a detection object, improves the application range, and is convenient for actual use.

Description

Technical Field

[0001] This invention belongs to the field of special equipment testing technology, specifically relating to a crack detection device and method for pressure-bearing equipment. Background Technology

[0002] Pressure equipment refers to a type of equipment that withstands various pressures, and crack safety testing is required for such equipment.

[0003] In the prior art, Chinese patent CN211085668U discloses a crack detection device for pressure equipment. The object to be tested is placed on top of a partition, so that the mounting frame can effectively drive the mounting frame of the detection device to rotate, allowing the detection device to effectively perform a circumferential detection around the object to be tested. However, because the object to be tested is placed on top of the partition, the bottom of the object cannot be tested, which has certain limitations.

[0004] Therefore, there is an urgent need for a device and method for detecting cracks on the bottom of objects. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, this invention proposes a crack detection device and method for pressure-bearing equipment, effectively solving the problem in the background art where the bottom of the object to be detected cannot be detected because the object to be detected is placed on top of the partition.

[0006] In a first aspect, the present invention proposes a crack detection device for pressure-bearing equipment, comprising a detection box with a door, a base fixedly connected to the bottom of the detection box, an arc-shaped plate inside the detection box, a detection instrument on the arc-shaped plate, a rotation adjustment structure cooperating with the arc-shaped plate, a reciprocating sliding assembly cooperating with the detection instrument on the arc-shaped plate, two mounting seats inside the detection box, two rotating frames on the mounting seats, clamps fixedly connected to the rotating frames, an anti-directional damping rotation mechanism cooperating with the two rotating frames on the mounting seats, staggered support columns fixedly connected to adjacent rotating frames, a pressing unit cooperating with the support columns inside the detection box, stop frames cooperating with the rotating frames fixedly connected to both sides of the mounting seats, two stop columns fixedly connected to both sides of the mounting seats, and the stop columns and stop frames cooperating, and a synchronous flipper cooperating with the two mounting seats inside the detection box.

[0007] Preferably, the opposite-direction damping rotation mechanism includes two first rotating shafts disposed on one side of the mounting base. A first support portion is rotatably connected to the outside of the first rotating shaft, and the first support portion is fixedly connected to the mounting base. Second rotating shafts are respectively disposed at both ends of the first rotating shafts. Second support portions are rotatably connected to the outside of the second rotating shafts, and the second support portions are fixedly connected to the mounting base. First damping discs are fixedly connected to both ends of the first rotating shafts. A second damping disc is fixedly connected to the end of the second rotating shaft near the first rotating shaft. The second damping discs are in contact with the first damping discs, and the rotating frame is fixedly connected to the corresponding second rotating shaft. The mounting base is provided with opposite-direction rotation units that cooperate with the two adjacent first rotating shafts.

[0008] Preferably, the opposite rotation unit includes a first gear fixedly sleeved outside the first rotating shaft, a double-sided toothed plate between the two first gears, and the two first gears respectively mesh with the double-sided toothed plate. The double-sided toothed plate passes through the mounting base, and a first hydraulic telescopic rod is fixedly connected to the mounting base. The first hydraulic telescopic rod and the double-sided toothed plate are connected by a first fixing frame.

[0009] Preferably, the pressing unit includes a fixed plate disposed above the mounting base, the fixed plate being fixedly connected to the inner wall of the detection box, and a pressing frame cooperating with the support column being disposed below the fixed plate, the pressing frame and the fixed plate being connected by a second hydraulic telescopic rod.

[0010] Preferably, the synchronous flipper includes a second fixed frame fixedly mounted on the mounting base, a first connecting shaft fixedly connected to the second fixed frame, the end of the first connecting shaft away from the second fixed frame being connected to the inner wall of the detection box via a bearing, a dual-axis motor fixedly connected inside the detection box, the two output ends of the dual-axis motor being respectively fixedly connected to a second connecting shaft, the end of the second connecting shaft away from the dual-axis motor being connected to the inner wall of the detection box via a bearing, and the first connecting shaft and the second connecting shaft being connected via a synchronizer.

[0011] Preferably, the synchronizer includes a first sprocket fixedly sleeved on the outside of the first connecting shaft, a second sprocket fixedly sleeved on the outside of the second connecting shaft, and the second sprocket and the first sprocket are connected by a chain.

[0012] Preferably, the rotation adjustment structure includes a third fixed frame fixedly mounted on the arc plate, a first single-axis motor fixedly connected to the detection box, a first fixed shaft fixedly connected to the output end of the first single-axis motor, and the bottom end of the first fixed shaft fixedly connected to the third fixed frame.

[0013] Preferably, the reciprocating sliding assembly includes an arc-shaped rack fixedly mounted on the testing instrument, a groove is provided on the arc plate, the arc-shaped rack is located in the groove, guide grooves are provided on the inner walls of both sides of the groove, guide strips are provided in the guide grooves, the guide strips and the arc-shaped rack are fixedly connected, a clearance hole is provided on the inner wall of the groove, a second single-axis motor is fixedly connected to the third fixed frame, a second fixed shaft is fixedly connected to the output end of the second single-axis motor, a second gear is fixedly connected to the end of the second fixed shaft away from the second single-axis motor, the second gear passes through the clearance hole, and the second gear meshes with the arc-shaped rack.

[0014] Preferably, a support plate is fixedly connected to the arc-shaped plate, a support ring is fixedly connected to the top of the support plate, a fixing ring is sleeved on the outside of the support ring, a bearing is provided at the connection between the support ring and the fixing ring, and the fixing ring is fixedly connected to the top inner wall of the detection box.

[0015] The above-mentioned devices and accessories in this invention can be made in-house or commercially available, and this invention does not impose any particular limitations on them.

[0016] Secondly, the present invention provides a crack detection method for pressure-bearing equipment, comprising the crack detection device for pressure-bearing equipment as described above, including the following steps:

[0017] Step 1: Drive two adjacent rotating frames to rotate in opposite directions using an anti-rotation damping rotation mechanism. When the two rotating frames contact their corresponding stop posts, the rotating frames and clamps stop rotating, completing the initial position correction of the rotating frames and clamps. After the rotating frames and clamps are corrected, drive the two adjacent rotating frames to rotate in opposite directions using the anti-rotation damping rotation mechanism, causing the two clamps to move closer together. When the lower rotating frame contacts the stop post, the anti-rotation damping rotation mechanism stops driving the two rotating frames to rotate, so that the two clamps remain horizontal.

[0018] Step 2: Press the support column on the upper rotating frame using the pressing unit. The support column drives the rotating frame to rotate, causing the upper clamping plate to move away from the lower clamping plate. When the upper rotating frame and clamping plate rotate to a preset angle, the pressing unit stops pressing the support column. The operator opens the box door, places the object to be tested on the two lower clamping plates, and then closes the box door. The testing instrument then tests the object. The reciprocating sliding component drives the testing instrument to slide relative to the arc plate, changing the tilt angle of the testing instrument. At the same time, the rotation adjustment structure drives the arc plate to rotate, changing the orientation of the testing instrument, thereby testing different positions on the object.

[0019] Step 3: When it is necessary to inspect the bottom of the object, the rotating frame and clamping plate located above are driven to rotate by the counter-damping rotation mechanism. When the clamping plate located above and the clamping plate located below hold the object to be inspected, the counter-damping rotation mechanism stops driving the rotating frame and clamping plate to rotate. The two mounting seats are driven to rotate 180 degrees by the synchronous flipper so that the bottom of the object to be inspected is facing upward. The support column on the rotating frame that has been rotated to the top is pressed by the pressing unit. The support column drives the rotating frame to rotate so that the rotating frame and clamping plate located above rotate to the preset angle. The position of the inspection instrument is changed again by the rotation adjustment structure and the counter-damping rotation mechanism so that the inspection instrument can inspect the bottom of the object to be inspected.

[0020] Step 4: After the inspection is completed, the staff opens the chamber door and removes the test object from the clamping plate. The synchronous flipper drives the two mounting bases to rotate 180 degrees in opposite directions to reset the mounting bases to their initial positions. At the same time, the opposite-direction damping rotation mechanism drives the two adjacent rotating frames to rotate, causing the two clamping plates to move away from each other. When the two rotating frames come into contact with the corresponding stop posts, the rotating frames and clamping plates stop rotating, completing the initial position correction of the rotating frames and clamping plates. The next crack inspection can then be carried out.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The crack detection device for pressure equipment of the present invention uses a pressing unit to press a support column on the upper rotating frame. The support column drives the rotating frame to rotate, avoiding interference between the upper rotating frame and the clamping plate on the rotation of the arc plate. The operator opens the box door, places the object to be tested on the two clamping plates below, and then closes the box door. The testing instrument then detects the object. A reciprocating sliding assembly drives the testing instrument to slide relative to the arc plate, changing the tilt angle of the testing instrument. Simultaneously, a rotation adjustment structure drives the arc plate to rotate, changing the orientation of the testing instrument, thereby detecting different positions on the object. The bottom of the object needs to be inspected. During testing, the rotating frame and clamping plate located above are driven to rotate by the counter-damping rotation mechanism. When the upper clamping plate and the lower clamping plate hold the object to be tested, the counter-damping rotation mechanism stops driving the rotating frame and clamping plate to rotate. The two mounting bases are rotated 180 degrees by the synchronous flipper so that the bottom of the object to be tested is facing upwards. The support column on the rotating frame that has been rotated to the top is pressed by the pressing unit to avoid the clamping plate interfering with the rotation of the arc plate. The position of the testing instrument can then be changed again by rotating the adjustment structure and the counter-damping rotation mechanism so that the testing instrument can test the bottom of the object to be tested, which is convenient for testing different positions on the object.

[0023] 2. The crack detection device and method for pressure-bearing equipment of the present invention improves the applicability of the detection and facilitates practical use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the crack detection device for the pressure-bearing equipment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the mounting base for the crack detection device of the present invention;

[0026] Figure 3 This is a schematic diagram of the pressing unit of the crack detection device of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the first fixing frame of the crack detection device of the present invention;

[0028] Figure 5 This is a cross-sectional schematic diagram of the second fixing frame of the crack detection device of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the counter-rotating unit of the crack detection device of the present invention;

[0030] Figure 7 This is a schematic diagram of the rotating adjustment structure of the crack detection device of the present invention;

[0031] Figure 8 This is a schematic diagram of the cross-section of the arc-shaped plate of the crack detection device of the present invention.

[0032] Wherein: 1-Testing box; 2-Base; 3-Box door; 4-Arc plate; 5-Testing instrument; 6-Mounting seat; 7-Rotating frame; 8-Clamping plate; 9-Support column; 10-Stop frame; 11-Stop column; 12-First rotating shaft; 13-First support part; 14-First gear; 15-Double-sided toothed plate; 16-First fixed frame; 17-First hydraulic telescopic rod; 18-Second rotating shaft; 19-Second support part; 20-First damping disc; 21-Second damping disc; 22-Pressing frame; 23-Fixing plate; 24-The first... 25-Second hydraulic telescopic rod; 26-First connecting shaft; 27-Dual-axis motor; 28-Second connecting shaft; 29-First sprocket; 30-Second sprocket; 31-Chain; 32-Third fixing frame; 33-First single-axis motor; 34-First fixed shaft; 35-Support plate; 36-Support ring; 37-Fixed ring; 38-Arc-shaped rack; 39-Slide groove; 40-Guide groove; 41-Guide strip; 42-Second single-axis motor; 43-Second fixed shaft; 44-Second gear; 45-Allowing hole. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Depend on Figures 1 to 8 The present invention includes a testing box 1, a door 3 on the testing box 1, a base 2 fixedly connected to the bottom of the testing box 1, an arc-shaped plate 4 inside the testing box 1, a testing instrument 5 on the arc-shaped plate 4, a rotation adjustment structure cooperating with the arc-shaped plate 4 on the testing box 1, a reciprocating sliding assembly cooperating with the testing instrument 5 on the arc-shaped plate 4, two mounting seats 6 inside the testing box 1, two rotating frames 7 on the mounting seats 6, clamping plates 8 fixedly connected to the rotating frames 7, and an anti-directional damping rotation mechanism cooperating with the two rotating frames 7 on the mounting seats 6. Adjacent rotating frames 7 are respectively fixedly connected to... The test chamber 1 contains staggered support columns 9 and pressing units that cooperate with the support columns 9. Two stop frames 10 that cooperate with the rotating frame 7 are fixedly connected to both sides of the mounting base 6. Two stop columns 11 are fixedly connected to both sides of the mounting base 6, and the stop columns 11 and stop frames 10 cooperate with each other. The test chamber 1 contains synchronous flippers that cooperate with the two mounting bases 6. By pressing the support columns 9 on the upper rotating frame 7 with the pressing units, the support columns 9 drive the rotating frame 7 to rotate, preventing the upper rotating frame 7 and clamping plate 8 from interfering with the rotation of the arc plate 4. The operator opens the chamber door 3 and places the test... The object to be tested is placed on the two clamping plates 8 located below. Then, the operator closes the door 3 and uses the testing instrument 5 to test the object. The testing instrument 5 is driven to slide relative to the arc plate 4 by a reciprocating sliding component, changing the tilt angle of the testing instrument 5. At the same time, the arc plate 4 is driven to rotate by a rotation adjustment structure, changing the orientation of the testing instrument 5, thereby testing different positions on the object. When it is necessary to test the bottom of the object, the rotating frame 7 and clamping plates 8 located above are driven to rotate by an anti-reverse damping rotation mechanism. When the upper clamping plate 8 and the lower clamping plate 8 clamp the object, the object is tested. When inspecting an object, the counter-rotating damping mechanism stops driving the rotating frame 7 and clamping plate 8 to rotate. The two mounting bases 6 are rotated 180 degrees by the synchronous flipper so that the bottom of the object being inspected is facing upwards. The pressing unit presses down on the support column 9 on the rotating frame 7 that has rotated to the top, so as to avoid the clamping plate 8 interfering with the rotation of the arc plate 4. The position of the inspection instrument 5 can then be changed again by rotating the adjustment structure and the counter-rotating damping mechanism so that the inspection instrument 5 can inspect the bottom of the object being inspected. This facilitates the inspection of different positions on the object, improves the applicability, and makes it easier to use in practice.

[0036] Example 2

[0037] Based on Example 1, by Figure 4 and Figure 6 The proposed counter-rotating damping mechanism includes two first rotating shafts 12 disposed on one side of the mounting base 6. A first support portion 13 is rotatably connected to the outside of each first rotating shaft 12, and the first support portion 13 is fixedly connected to the mounting base 6. Second rotating shafts 18 are respectively disposed at both ends of the first rotating shafts 12. Second support portions 19 are rotatably connected to the outside of each second rotating shaft 18, and the second support portions 19 are fixedly connected to the mounting base 6. First damping discs 20 are fixedly connected to both ends of the first rotating shafts 12. A second damping disc 21 is fixedly connected to the end of each second rotating shaft 18 closest to the first rotating shaft 12. 1. The first damping disc 20 is in contact with the rotating frame 7 and the corresponding second rotating shaft 18 is fixedly connected. The mounting base 6 is provided with an opposite rotation unit that cooperates with two adjacent first rotating shafts 12. The opposite rotation unit includes a first gear 14 fixedly sleeved on the outside of the first rotating shaft 12. A double-sided toothed plate 15 is provided between the two first gears 14, and the two first gears 14 mesh with the double-sided toothed plate 15 respectively. The double-sided toothed plate 15 passes through the mounting base 6. A first hydraulic telescopic rod 17 is fixedly connected to the mounting base 6. The first hydraulic telescopic rod 17 and the double-sided toothed plate 15 are connected through the first fixed frame 16.

[0038] The first fixed frame 16 is moved by the first hydraulic telescopic rod 17. The first fixed frame 16 moves the double-sided toothed plate 15. The double-sided toothed plate 15 drives the two first gears 14 to rotate in opposite directions. The first gears 14 drive the first rotating shaft 12 and the first damping disc 20 to rotate. The first damping disc 20 drives the second damping disc 21 and the second rotating shaft 18 to rotate through friction. The second rotating shaft 18 then drives the rotating frame 7 to rotate. When the two rotating frames 7 contact the corresponding stop posts 11, as the first fixed frame 16 continues to move, the first damping disc 20 cannot drive the second damping disc 21 and the second rotating shaft 18 to rotate synchronously through friction, ensuring that the rotating frame 7 stops after moving to the preset position. When the first hydraulic telescopic rod 17 drives the first fixed frame 16 to move in the opposite direction, similarly, the two rotating frames 7 drive the two clamping plates 8 to move closer together. Finally, the two clamping plates 8 clamp the object to be detected, and the pressing unit presses down on the rotating frame located above. When the support column 9 on the 7 is pressed, the support column 9 drives the rotating frame 7 to rotate. The rotating frame 7 drives the second damping disk 21 to rotate relative to the first damping disk 20 through the second rotating shaft 18 until the rotating frame 7 rotates to the preset angle. The pressing unit no longer presses the support column 9. When the two clamping plates 8 need to clamp the object to be detected again, the first hydraulic telescopic rod 17 drives the first fixed frame 16 to move. Since the rotating frame 7 located below is in contact with the stop frame 10, as the first damping disk 20 continues to rotate, the first damping disk 20 cannot drive the second damping disk 21 corresponding to the rotating frame 7 located below to rotate through friction. The rotating frame 7 located below and the clamping plate 8 remain stationary. The first damping disk 20 drives the second damping disk 21 corresponding to the rotating frame 7 located above to rotate through friction. This allows the rotating frame 7 located above and the clamping plate 8 to rotate toward the rotating frame 7 located below and the clamping plate 8 until the two clamping plates 8 clamp the object to be detected again.

[0039] Example 3

[0040] Based on Example 1, by Figure 1 , Figure 2 , Figure 3 and Figure 5The pressing unit includes a fixed plate 23 disposed above the mounting base 6. The fixed plate 23 is fixedly connected to the inner wall of the detection box 1. A pressing frame 22 that cooperates with the support column 9 is provided below the fixed plate 23. The pressing frame 22 and the fixed plate 23 are connected by a second hydraulic telescopic rod 24. The synchronous flipper includes a second fixed frame 25 fixedly installed on the mounting base 6. A first connecting shaft 26 is fixedly connected to the second fixed frame 25. The end of the first connecting shaft 26 away from the second fixed frame 25 is connected to the inner wall of the detection box 1 by a bearing. Next, a dual-axis motor 27 is fixedly connected inside the detection box 1. The two output ends of the dual-axis motor 27 are respectively fixedly connected to a second connecting shaft 28. The end of the second connecting shaft 28 away from the dual-axis motor 27 is connected to the inner wall of the detection box 1 through a bearing. The first connecting shaft 26 and the second connecting shaft 28 are connected through a synchronizer. The synchronizer includes a first sprocket 29 fixedly sleeved on the outside of the first connecting shaft 26, and a second sprocket 30 fixedly sleeved on the outside of the second connecting shaft 28. The second sprocket 30 and the first sprocket 29 are connected through a chain 31.

[0041] The second hydraulic telescopic rod 24 drives the pressing frame 22 to move downward, and the pressing frame 22 contacts the support column 9. As the pressing frame 22 continues to move downward, the pressing frame 22 can drive the corresponding rotating frame 7 to rotate through the support column 9, changing the position of the rotating frame 7 and the clamping plate 8. When it is no longer necessary to drive the rotating frame 7 to rotate, the second hydraulic telescopic rod 24 drives the pressing frame 22 to move upward, so that the pressing frame 22 returns to its initial height. The pressing frame 22 no longer presses the support column 9, and the dual-axis motor 27 drives the two second connecting shafts 28 to rotate. The second connecting shafts 28 drive the second sprocket 30 to rotate. The second sprocket 30 drives the first sprocket 29 and the first connecting shaft 26 to rotate through the chain 31. The first connecting shaft 26 can then drive the mounting base 6 to flip through the second fixing frame 25.

[0042] Example 4

[0043] Based on Example 1, by Figure 1 , Figure 7 and Figure 8The rotary adjustment structure includes a third fixed frame 32 fixedly mounted on the arc-shaped plate 4. A first single-axis motor 33 is fixedly connected to the detection box 1. The output end of the first single-axis motor 33 is fixedly connected to a first fixed shaft 34, and the bottom end of the first fixed shaft 34 is fixedly connected to the third fixed frame 32. The reciprocating sliding assembly includes an arc-shaped rack 38 fixedly mounted on the detection instrument 5. A slide groove 39 is provided on the arc-shaped plate 4. The arc-shaped rack 38 is located in the slide groove 39. Guide grooves 40 are respectively provided on the inner walls of both sides of the slide groove 39. Guide bars 41 are provided in the guide grooves 40. The guide bars 41 and the arc-shaped rack 38 are fixedly connected. The inner wall of the slide groove 39 has... An clearance hole 45 is provided. A second single-axis motor 42 is fixedly connected to the third fixed frame 32. A second fixed shaft 43 is fixedly connected to the output end of the second single-axis motor 42. A second gear 44 is fixedly connected to the end of the second fixed shaft 43 away from the second single-axis motor 42. The second gear 44 passes through the clearance hole 45 and meshes with the arc-shaped rack 38. A support plate 35 is fixedly connected to the arc plate 4. A support ring 36 is fixedly connected to the top of the support plate 35. A fixed ring 37 is sleeved on the outside of the support ring 36. A bearing is provided at the connection between the support ring 36 and the fixed ring 37. The fixed ring 37 is fixedly connected to the top inner wall of the detection box 1.

[0044] The first fixed shaft 34 is driven to rotate by the first single-axis motor 33. The first fixed shaft 34 then drives the arc plate 4 to rotate through the third fixed frame 32. At the same time, the arc plate 4 drives the support ring 36 to rotate relative to the fixed ring 37 through the support plate 35. The design of the support plate 35, support ring 36, fixed ring 37 and bearings ensures that the arc plate 4 rotates smoothly relative to the detection box 1. The second fixed shaft 43 and the second gear 44 are driven to rotate by the second single-axis motor 42. The second gear 44 slides in the slide groove 39 through the arc rack 38. The arc rack 38 drives the detection instrument 5 to slide relative to the arc plate 4. At the same time, the arc rack 38 drives the guide bar 41 to slide in the guide groove 40. The design of the guide bar 41 and the guide groove 40 ensures that the arc rack 38 slides smoothly relative to the arc plate 4.

[0045] Example 5

[0046] This embodiment provides a crack detection method for pressure-bearing equipment, including the crack detection device for pressure-bearing equipment as described above, and includes the following steps:

[0047] Step 1: Drive two adjacent rotating frames 7 to rotate through the opposite-direction damping rotation mechanism. The two rotating frames 7 rotate in opposite directions. When the two rotating frames 7 come into contact with the corresponding stop post 11, the rotating frames 7 and the clamping plate 8 stop rotating, completing the correction of the initial position of the rotating frames 7 and the clamping plate 8. After the rotating frames 7 and the clamping plate 8 are corrected, drive the two adjacent rotating frames 7 to rotate in opposite directions through the opposite-direction damping rotation mechanism, so that the two clamping plates 8 move closer to each other. When the rotating frame 7 located below comes into contact with the stop post 10, the opposite-direction damping rotation mechanism stops driving the two rotating frames 7 to rotate, so that the two clamping plates 8 remain horizontal.

[0048] Step 2: Press the support column 9 on the upper rotating frame 7 using the pressing unit. The support column 9 drives the rotating frame 7 to rotate, causing the upper clamping plate 8 to move away from the lower clamping plate 8. When the upper rotating frame 7 and clamping plate 8 rotate to a preset angle, the pressing unit stops pressing the support column 9. The operator opens the box door 3 and places the object to be tested on the two clamping plates 8 below. Then the operator closes the box door 3 and uses the testing instrument 5 to test the object. The reciprocating sliding component drives the testing instrument 5 to slide relative to the arc plate 4, changing the tilt angle of the testing instrument 5. At the same time, the rotation adjustment structure drives the arc plate 4 to rotate, changing the orientation of the testing instrument 5, thereby testing different positions on the object.

[0049] Step 3: When it is necessary to inspect the bottom of the object, the rotating frame 7 and clamping plate 8 located above are driven to rotate by the opposite damping rotation mechanism. When the clamping plate 8 located above and the clamping plate 8 located below hold the object to be inspected, the opposite damping rotation mechanism stops driving the rotating frame 7 and clamping plate 8 to rotate. The two mounting seats 6 are driven to rotate 180 degrees by the synchronous flipper so that the bottom of the object to be inspected is facing upward. The support column 9 on the rotating frame 7 that has been rotated to the top is pressed by the pressing unit. The support column 9 drives the rotating frame 7 to rotate so that the rotating frame 7 and clamping plate 8 located above rotate to a preset angle. The position of the inspection instrument 5 is changed again by the rotation adjustment structure and the opposite damping rotation mechanism so that the inspection instrument 5 can inspect the bottom of the object to be inspected.

[0050] Step 4: After the inspection is completed, the staff opens the box door and removes the test object located on the clamping plate 8. The two mounting seats 6 are driven to rotate 180 degrees in the opposite direction by the synchronous flipper so that the mounting seats 6 are reset to their initial positions. At the same time, the two adjacent rotating frames 7 are driven to rotate by the opposite damping rotation mechanism so that the two clamping plates 8 move away from each other. When the two rotating frames 7 come into contact with the corresponding stop posts 11, the rotating frames 7 and clamping plates 8 stop rotating, and the initial positions of the rotating frames 7 and clamping plates 8 are corrected. Then the next crack inspection can be carried out.

[0051] Working principle: During operation, the two adjacent rotating frames 7 are driven to rotate in opposite directions by the counter-rotating damping mechanism, causing the two clamping plates 8 to move away from each other. When the two rotating frames 7 contact their corresponding stop posts 11, the rotating frames 7 and clamping plates 8 stop rotating, completing the initial position correction of the rotating frames 7 and clamping plates 8. After the rotating frames 7 and clamping plates 8 have completed the correction, the two adjacent rotating frames 7 are driven to rotate in opposite directions by the counter-rotating damping mechanism, causing the two clamping plates 8 to move closer together. When the lower rotating frame 7 contacts the stop post 10, the counter-rotating damping mechanism stops driving the two rotating frames 7 to rotate, so that the two clamping plates 8 remain horizontal. At this time, the support post 9 on the upper rotating frame 7 is pressed by the pressing unit. The support column 9 drives the rotating frame 7 to rotate, causing the upper clamping plate 8 to move away from the lower clamping plate 8. When the upper rotating frame 7 and clamping plate 8 rotate to a preset angle, the pressing unit stops pressing the support column 9 to avoid interference with the rotation of the arc plate 4. The operator opens the box door 3, places the object to be tested on the two lower clamping plates 8, and then closes the box door 3. The testing instrument 5 is used to test the object. The reciprocating sliding component drives the testing instrument 5 to slide relative to the arc plate 4, changing the tilt angle of the testing instrument 5. At the same time, the rotation adjustment structure drives the arc plate 4 to rotate, changing the orientation of the testing instrument 5, thereby testing different positions on the object. When the bottom of the object to be inspected needs to be inspected, the upper rotating frame 7 and clamping plate 8 are driven to rotate by the counter-damping rotation mechanism. When the upper clamping plate 8 and the lower clamping plate 8 hold the object to be inspected, the counter-damping rotation mechanism stops driving the rotating frame 7 and clamping plate 8 to rotate. The two mounting bases 6 are rotated 180 degrees by the synchronous flipper so that the bottom of the object to be inspected is facing upwards. The pressing unit presses the support column 9 on the upper rotating frame 7. The support column 9 drives the rotating frame 7 to rotate. When the upper rotating frame 7 and clamping plate 8 rotate to the preset angle, the pressing unit stops pressing the support column 9 to avoid the clamping plate 8 interfering with the rotation of the arc plate 4. The structure and counter-damping can then be adjusted again by rotation. The rotating mechanism changes the position of the testing instrument 5 so that the testing instrument 5 can test the bottom of the original test object. After the test is completed, the staff opens the box door and removes the test object located on the clamping plate 8. The synchronous flipper drives the two mounting seats 6 to rotate 180 degrees in the opposite direction so that the mounting seats 6 return to their initial positions. At the same time, the opposite damping rotating mechanism drives the two adjacent rotating frames 7 to rotate, so that the two clamping plates 8 move away from each other. When the two rotating frames 7 contact the corresponding stop posts 11, the rotating frames 7 and clamping plates 8 stop rotating, and the initial positions of the rotating frames 7 and clamping plates 8 are corrected. The next crack test can then be performed. This makes it easier to test different positions on the test object, improves the applicability, and facilitates practical use.

[0052] The first fixed frame 16 is moved by the first hydraulic telescopic rod 17. The first fixed frame 16 moves the double-sided toothed plate 15. The double-sided toothed plate 15 drives the two first gears 14 to rotate in opposite directions. The first gears 14 drive the first rotating shaft 12 and the first damping disc 20 to rotate. The first damping disc 20 drives the second damping disc 21 and the second rotating shaft 18 to rotate through friction. The second rotating shaft 18 then drives the rotating frame 7 to rotate. When the two rotating frames 7 contact the corresponding stop posts 11, as the first fixed frame 16 continues to move, the first damping disc 20 cannot drive the second damping disc 21 and the second rotating shaft 18 to rotate synchronously through friction, ensuring that the rotating frame 7 stops after moving to the preset position. When the first hydraulic telescopic rod 17 drives the first fixed frame 16 to move in the opposite direction, similarly, the two rotating frames 7 drive the two clamping plates 8 to move closer together. Finally, the two clamping plates 8 clamp the object to be detected, and the pressing unit presses down on the rotating frame located above. When the support column 9 on the 7 is in motion, the support column 9 drives the rotating frame 7 to rotate. The rotating frame 7 drives the second damping disk 21 to rotate relative to the first damping disk 20 through the second rotating shaft 18 until the rotating frame 7 rotates to the preset angle. The pressing unit no longer presses the support column 9. When the two clamping plates 8 need to clamp the object to be detected again, the first hydraulic telescopic rod 17 drives the first fixed frame 16 to move. Since the rotating frame 7 located below is in contact with the stop frame 10, as the first damping disk 20 continues to rotate, the first damping disk 20 cannot drive the second damping disk 21 corresponding to the rotating frame 7 located below to rotate through friction. The rotating frame 7 and clamping plate 8 located below remain stationary. The first damping disk 20 drives the second damping disk 21 corresponding to the rotating frame 7 located above to rotate through friction. This allows the rotating frame 7 and clamping plate 8 located above to rotate toward the rotating frame 7 and clamping plate 8 located below, until the two clamping plates 8 clamp the object to be detected again.

[0053] The second hydraulic telescopic rod 24 drives the pressing frame 22 to move downward, and the pressing frame 22 contacts the support column 9. As the pressing frame 22 continues to move downward, the pressing frame 22 can drive the corresponding rotating frame 7 to rotate through the support column 9, changing the position of the rotating frame 7 and the clamping plate 8. When it is no longer necessary to drive the rotating frame 7 to rotate, the second hydraulic telescopic rod 24 drives the pressing frame 22 to move upward, so that the pressing frame 22 returns to the initial height. The pressing frame 22 no longer presses the support column 9. The dual-axis motor 27 drives the two second connecting shafts 28 to rotate. The second connecting shafts 28 drive the second sprocket 30 to rotate. The second sprocket 30 drives the first sprocket 29 and the first connecting shaft 26 to rotate through the chain 31. The first connecting shaft 26 can then drive the mounting base 6 to flip through the second fixing frame 25.

[0054] The first fixed shaft 34 is driven to rotate by the first single-axis motor 33. The first fixed shaft 34 then drives the arc plate 4 to rotate through the third fixed frame 32. At the same time, the arc plate 4 drives the support ring 36 to rotate relative to the fixed ring 37 through the support plate 35. The design of the support plate 35, support ring 36, fixed ring 37 and bearings ensures that the arc plate 4 rotates smoothly relative to the detection box 1. The second fixed shaft 43 and the second gear 44 are driven to rotate by the second single-axis motor 42. The second gear 44 slides in the slide groove 39 through the arc rack 38. The arc rack 38 drives the detection instrument 5 to slide relative to the arc plate 4. At the same time, the arc rack 38 drives the guide bar 41 to slide in the guide groove 40. The design of the guide bar 41 and the guide groove 40 ensures that the arc rack 38 slides smoothly relative to the arc plate 4.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crack detection device for pressure-bearing equipment, comprising a detection box (1), wherein the detection box (1) is provided with a door (3), characterized in that: The bottom of the testing box (1) is fixedly connected to a base (2). An arc-shaped plate (4) is provided inside the testing box (1). A testing instrument (5) is provided on the arc-shaped plate (4). A rotating adjustment structure that cooperates with the arc-shaped plate (4) is provided on the arc-shaped plate (4). A reciprocating sliding assembly that cooperates with the testing instrument (5) is provided on the arc-shaped plate (4). Two mounting seats (6) are provided inside the testing box (1). Two rotating frames (7) are provided on the mounting seats (6). A clamp (8) is fixedly connected to the rotating frames (7). The mounting seats (6) are provided with a clamp that cooperates with the two rotating frames. (7) A counter-rotating damping mechanism is provided. Two adjacent rotating frames (7) are respectively fixedly connected with staggered support columns (9). The test box (1) is provided with a pressing unit that cooperates with the support column (9). The two sides of the mounting base (6) are respectively fixedly connected with stop frames (10) that cooperate with the rotating frame (7). Two stop columns (11) are respectively fixedly connected to the two sides of the mounting base (6), and the stop columns (11) and the rotating frame (7) cooperate with each other. The test box (1) is provided with a synchronous flipper that cooperates with the two mounting bases (6). The opposite-direction damping rotation mechanism includes two first rotating shafts (12) disposed on one side of the mounting base (6). The first rotating shaft (12) is fitted with a first support part (13) that is rotatably connected. The first support part (13) and the mounting base (6) are fixedly connected. The two ends of the first rotating shaft (12) are respectively provided with second rotating shafts (18). The second rotating shaft (18) is fitted with a second support part (19) that is rotatably connected. The second support part (19) and the mounting base (6) are fixedly connected. The two ends of the first rotating shaft (12) are respectively fixedly connected with first damping discs (20). The end of the second rotating shaft (18) near the first rotating shaft (12) is fixedly connected with a second damping disc (21). The second damping disc (21) and the first damping disc (20) are in contact. The rotating frame (7) is fixedly connected to the corresponding second rotating shaft (18). The mounting base (6) is provided with opposite-direction rotation units that cooperate with the two adjacent first rotating shafts (12). The opposite rotation unit includes a first gear (14) fixedly sleeved outside the first rotating shaft (12), a double-sided toothed plate (15) is provided between the two first gears (14), and the two first gears (14) mesh with the double-sided toothed plate (15) respectively. The double-sided toothed plate (15) passes through the mounting base (6), and a first hydraulic telescopic rod (17) is fixedly connected on the mounting base (6). The first hydraulic telescopic rod (17) and the double-sided toothed plate (15) are connected by a first fixing frame (16).

2. The crack detection device for pressure-bearing equipment according to claim 1, characterized in that: The pressing unit includes a fixing plate (23) set above the mounting base (6), the fixing plate (23) and the inner wall of the detection box (1) are fixedly connected, and a pressing frame (22) that cooperates with the support column (9) is provided below the fixing plate (23). The pressing frame (22) and the fixing plate (23) are connected by a second hydraulic telescopic rod (24).

3. The crack detection device for pressure-bearing equipment according to claim 1, characterized in that: The synchronous flipper includes a second fixed frame (25) fixedly installed on the mounting base (6). A first connecting shaft (26) is fixedly connected to the second fixed frame (25). The end of the first connecting shaft (26) away from the second fixed frame (25) is connected to the inner wall of the detection box (1) through a bearing. A dual-axis motor (27) is fixedly connected inside the detection box (1). The two output ends of the dual-axis motor (27) are respectively fixedly connected to a second connecting shaft (28). The end of the second connecting shaft (28) away from the dual-axis motor (27) is connected to the inner wall of the detection box (1) through a bearing. The first connecting shaft (26) and the second connecting shaft (28) are connected through a synchronizer.

4. The crack detection device for pressure-bearing equipment according to claim 3, characterized in that: The synchronizer includes a first sprocket (29) fixedly sleeved outside the first connecting shaft (26), and a second sprocket (30) fixedly sleeved outside the second connecting shaft (28). The second sprocket (30) and the first sprocket (29) are connected by a chain (31).

5. A crack detection device for pressure-bearing equipment according to claim 1, characterized in that: The rotation adjustment structure includes a third fixed frame (32) fixedly installed on the arc plate (4), a first single-axis motor (33) fixedly connected to the detection box (1), a first fixed shaft (34) fixedly connected to the output end of the first single-axis motor (33), and the bottom end of the first fixed shaft (34) fixedly connected to the third fixed frame (32).

6. The crack detection device for pressure-bearing equipment according to claim 5, characterized in that: The reciprocating sliding assembly includes an arc-shaped rack (38) fixedly installed on the testing instrument (5), a groove (39) is provided on the arc plate (4), the arc-shaped rack (38) is located in the groove (39), guide grooves (40) are provided on the inner walls of both sides of the groove (39), guide strips (41) are provided in the guide grooves (40), the guide strips (41) and the arc-shaped rack (38) are fixedly connected, and clearance holes (45) are provided on the inner wall of the groove (39). A second single-axis motor (42) is fixedly connected on the third fixed frame (32), a second fixed shaft (43) is fixedly connected to the output end of the second single-axis motor (42), a second gear (44) is fixedly connected to the end of the second fixed shaft (43) away from the second single-axis motor (42), the second gear (44) passes through the clearance hole (45), and the second gear (44) meshes with the arc-shaped rack (38).

7. The crack detection device for pressure-bearing equipment according to claim 1, characterized in that: A support plate (35) is fixedly connected to the arc plate (4). A support ring (36) is fixedly connected to the top of the support plate (35). A fixing ring (37) is sleeved on the outside of the support ring (36). A bearing is provided at the connection between the support ring (36) and the fixing ring (37). The fixing ring (37) is fixedly connected to the top inner wall of the detection box (1).

8. A method for detecting cracks in pressure-bearing equipment, comprising the crack detection device for pressure-bearing equipment as described in claim 1, characterized in that: Includes the following steps: Step 1: Drive the two adjacent rotating frames (7) to rotate through the opposite damping rotation mechanism. The two rotating frames (7) rotate in opposite directions. When the two rotating frames (7) come into contact with the corresponding stop post (11) respectively, the rotating frames (7) and the clamping plate (8) stop rotating, and the initial position of the rotating frames (7) and the clamping plate (8) is corrected. After the rotating frames (7) and the clamping plate (8) are corrected, drive the two adjacent rotating frames (7) to rotate in opposite directions through the opposite damping rotation mechanism, so that the two clamping plates (8) move closer to each other. When the rotating frame (7) located below comes into contact with the stop post (10), the opposite damping rotation mechanism stops driving the two rotating frames (7) to rotate, so that the two clamping plates (8) remain horizontal. Step 2: Press the support column (9) on the upper rotating frame (7) by pressing the pressing unit. The support column (9) drives the rotating frame (7) to rotate, so that the rotating frame (7) drives the upper clamping plate (8) to move away from the lower clamping plate (8). When the upper rotating frame (7) and clamping plate (8) rotate to the preset angle, the pressing unit stops pressing the support column (9). The staff opens the box door (3) and places the test object on the two clamping plates (8) below. Then the staff closes the box door (3) and tests the test object through the testing instrument (5). The testing instrument (5) is driven to slide relative to the arc plate (4) by the reciprocating sliding component to change the tilt angle of the testing instrument (5). At the same time, the arc plate (4) is driven to rotate by the rotation adjustment structure to change the orientation of the testing instrument (5) and thus test different positions on the test object. Step 3: When it is necessary to inspect the bottom of the object, the rotating frame (7) and clamp (8) located above are driven to rotate by the opposite damping rotation mechanism. When the clamp (8) located above and the clamp (8) located below hold the object, the opposite damping rotation mechanism stops driving the rotating frame (7) and clamp (8) to rotate. The two mounting seats (6) are driven to rotate 180 degrees by the synchronous flipper so that the bottom of the object is facing up. The support column (9) on the rotating frame (7) rotated to the top is pressed by the pressing unit. The support column (9) drives the rotating frame (7) to rotate so that the rotating frame (7) and clamp (8) located above are rotated to a preset angle. The position of the detection instrument (5) is changed again by the rotation adjustment structure and the reciprocating sliding assembly so that the detection instrument (5) can inspect the bottom of the object. Step 4: After the inspection is completed, the staff opens the box door and removes the inspection object located on the clamp (8). The two mounting seats (6) are driven to rotate 180 degrees in the opposite direction by the synchronous flipper so that the mounting seats (6) are reset to the initial position. At the same time, the two adjacent rotating frames (7) are driven to rotate by the opposite damping rotation mechanism so that the two clamps (8) move away from each other. When the two rotating frames (7) come into contact with the corresponding stop column (11) respectively, the rotating frames (7) and clamps (8) stop rotating, and the initial position of the rotating frames (7) and clamps (8) is corrected. Then the next crack inspection can be carried out.

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