Weld Detection Device and Method for Inlet and Outlet Oil Ports of Deep-Sea Flat Actuator Made of TC4 Material

Abstract

The present invention relates to the technical field of weld detection, and specifically discloses a weld detection device and method for the oil inlet and outlet welds of a deep-sea flat actuator made of TC4 material, including a fixing mechanism arranged on the top of the detection table for fixing the flat actuator and a detection mechanism arranged on the top of the detection table for detecting the welds of the inlet and outlet oil pipes. The detection mechanism includes a mounting seat, a rotating assembly is arranged on the top of the mounting seat, and detection components are symmetrically arranged inside the rotating assembly. By fixing the flat actuator and making the first infrared distance sensor rotate in a circular motion, the flatness and expansion joints of the welds of the inlet and outlet oil pipes can be detected by rotating the first infrared distance sensor under the condition that the flat actuator is fixed, so as to improve the detection accuracy. The stability of the installation of the first infrared distance sensor is monitored by the first auxiliary component and the second auxiliary component, so as to avoid affecting the detection accuracy due to the loosening of the installation of the first infrared distance sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of weld detection, and in particular to a device and method for detecting welds of oil inlet and outlet ports of a deep-sea flat actuator made of TC4 material. Background Art

[0002] The flat actuator test piece is the core component of the DEST simulator project of the Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Its role is to reproduce the real stress environment through experimental simulation and provide a process design basis for the evaluation and exploitation of "combustible ice". The so-called "combustible ice" is an ice-like crystalline substance composed of natural gas and water. It is a new energy source with great development potential hidden in seabed sediments and frozen soil. The TC4 flat actuator is a large-tonnage small flat flexible loading device, which is assembled and welded by a long U-shaped end, a short U-shaped end, a panel, an inlet and outlet pipe and a grid component. It is mainly formed by a combination of vacuum electron beam, laser welding and manual argon arc welding. In order to accurately simulate the stress environment, the product has extremely high shape and position tolerance requirements without damaging the surface of the raw materials. The inlet and outlet pipes are usually fixed to the outside of the long U shape by welding. After the welding is completed, the welding of the inlet and outlet pipes needs to be inspected to ensure its stability after being put into use.

[0003] Publication No. CN220473404U discloses a circular weld detection device, and the problems raised in its background technology are: circular welds are mostly inspected by manual visual sampling, with poor accuracy; and because the weld is circular, the inspector needs to rotate the entire workpiece for inspection, which is inconvenient to operate and inefficient. It uses a first supporting mechanism to support the second end of the circular workpiece, and the rotating mechanism is constructed to drive the circular workpiece to rotate at least 360°, so that the weld detector can continuously and completely detect the circular weld, and the detection process has a high degree of automation.

[0004] Based on the existing technology, there are the following problems:

[0005] When inspecting an annular workpiece, it is usually rotated and then inspected by an infrared ranging sensor. However, the annular workpiece is smaller in size and lighter in weight than the infrared ranging sensor. In the actual rotation process, the rotating workpiece is less accurate than the rotating infrared ranging sensor and is prone to offset, which affects the accuracy of the detection. In addition, the infrared ranging sensor is prone to loose installation due to long-term operation during actual use, and the existing installation mechanism is not convenient for monitoring the loose infrared ranging sensor, which affects the stability and accuracy of the detection. In order to solve the above problems, a deep-sea flat actuator oil inlet and outlet weld detection device and method using TC4 material are proposed. Summary of the invention

[0006] To overcome the deficiencies of the above-mentioned prior art, the present invention provides a weld detection device and method for the oil inlet and outlet of a deep-sea flat actuator made of TC4 material. By fixing the workpiece and rotating an infrared distance sensor to detect the weld of the workpiece, the detection accuracy is improved, and it is convenient to monitor the infrared distance sensor and other components that become loose, thereby improving the detection stability and accuracy.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A weld detection device for the oil inlet and outlet of a deep-sea flat actuator made of TC4 material, including a detection table, a flat actuator, and oil inlet and outlet pipes welded on both sides of the flat actuator. A control panel is provided on the outer side of the detection table. It also includes a fixing mechanism provided on the top of the detection table for fixing the flat actuator and a detection mechanism provided on the top of the detection table for detecting the welds of the oil inlet and outlet pipes. The detection mechanism includes:

[0008] A mounting seat, fixedly provided on the top of the detection table. A rotating component is provided on the top of the mounting seat. Detection components are symmetrically arranged inside the rotating component. The detection components include:

[0009] A first connection seat, arranged inside the rotating component. A second connection seat is fixedly provided on the side of the first connection seat away from the rotating component. An installation cover is fixedly provided on the side of the second connection seat away from the first connection seat. A first infrared distance sensor is detachably arranged inside the installation cover. First auxiliary components and second auxiliary components are respectively arranged inside the first connection seat and the second connection seat to determine whether the position of the first infrared distance sensor has shifted. The second auxiliary component includes:

[0010] A first cavity, opened inside the second connection seat. A first piston block is sleeved on the inner wall of the first cavity. A first abutting rod extending into the installation cover is fixedly provided on the side wall of the first piston block.

[0011] Furthermore, the second auxiliary component further includes:

[0012] A second cavity, opened inside the second connection seat and communicating with the first cavity. A moving groove is opened on the top of the second connection seat. A second piston block is sleeved on the inner wall of the second cavity. A second abutting rod extending into the moving groove is fixedly provided on the side wall of the second piston block. Pressure gases are filled inside both the first cavity and the second cavity. The gas pressure on the side of the second piston block close to the second abutting rod inside the second cavity is greater than the gas pressure on the side of the second piston block away from the second abutting rod. The side walls of the first piston block and the second piston block are hermetically arranged with the inner walls of the first cavity and the second cavity respectively;

[0013] The touch plate is fixedly arranged on the side wall of one end of the second abutting rod located in the moving groove and extends to the top of the second connecting seat. The side wall of the touch plate fits against the inner wall of the moving groove to limit the position of the touch plate. A control button is movably arranged on the top of the second connecting seat, so as to give an alarm by pressing the control button through the touch plate. A moving component for adjusting the position of the control button is arranged on the top of the second connecting seat.

[0014] Furthermore, the communication part between the first cavity and the second cavity is located on the inner wall of the first cavity far from the first abutting rod.

[0015] Limiting rings are fixedly sleeved on the inner walls of the first cavity and the second cavity respectively to limit the positions of the first piston block and the second piston block.

[0016] A first through hole communicating with the first cavity is formed in the inner wall of the mounting cover for the first abutting rod to move. A second through hole sleeving the second abutting rod is formed inside the second connecting seat between the second cavity and the moving groove. A sealing ring is fixedly sleeved on the inner wall of the second through hole to seal between the second abutting rod and the second through hole. The second through hole communicates with the second cavity.

[0017] Furthermore, the first auxiliary component includes:

[0018] An identification block is fixedly arranged on the inner wall of the first connecting seat and is designed in a frustum shape. An adjusting component is arranged on the side of the identification block far from the second connecting seat.

[0019] A second infrared ranging sensor is fixedly arranged on the inner wall of the first connecting seat and is arranged opposite to the identification block. The inside of the first connecting seat is hollow. An opening is formed at the top of the first connecting seat and above the second infrared ranging sensor, and a cover plate is fixedly arranged at the opening through bolts.

[0020] Furthermore, the adjusting component includes:

[0021] A guide rod is sleeved on the side of the identification block close to the second infrared ranging sensor. A marking plate is fixedly arranged on the side of the guide rod far from the identification block. A jack is formed on the side wall of the guide rod. A guide hole adapted to the guide rod is formed on the side of the identification block close to the second infrared ranging sensor, and a placing groove is formed on the inner wall of the guide hole.

[0022] An inserting rod is sleeved on the inner wall of the placing groove and extends into the guide hole. The inserting rod is adapted to the jack. A first ring body is fixedly sleeved on the side wall of the inserting rod, and the outer wall of the first ring body is sleeved in the placing groove. A second ring body is fixedly sleeved on the inner wall of the placing groove, and the inner wall of the second ring body is sleeved on the side wall of the inserting rod. A spring is sleeved on the side wall of the inserting rod between the first ring body and the second ring body. The first ring body is located at one end of the inserting rod far from the guide hole, and the second ring body is located at one end of the inserting rod close to the guide hole. The ends of the guide rod and the inserting rod are both designed in an arc shape.

[0023] The card slot is opened on the bottom inner wall of the guide hole. A clamping plate adapted to the card slot is fixedly provided at the bottom of the guide rod, so that after the guide rod is inserted into the guide groove, the jack faces the plug rod.

[0024] Furthermore, the rotation assembly includes:

[0025] A rotating seat is rotatably arranged on the top of the mounting seat. A base plate is fixedly provided on one side of the rotating seat close to the fixing mechanism. A rotating rod is fixedly provided at the center of the side of the rotating seat away from the base plate, and the rotating rod extends to the side of the base plate away from the rotating seat. The rotating rod is designed to be hollow.

[0026] A first driving assembly is arranged on the side wall of the mounting seat and is used to drive the rotating rod to rotate, thereby driving the detection assembly to rotate. A position adjustment assembly for adjusting the position of the detection assembly is arranged on the side wall of the base plate.

[0027] Furthermore, the position adjustment assembly includes:

[0028] An installation ring is rotatably arranged on the side wall of one end of the rotating rod located inside the rotating seat and extends to the side of the base plate away from the rotating seat. A first bevel gear is fixedly provided on the side of the base plate away from the rotating seat of the installation ring, and the inner wall of the first bevel gear is sleeved on the outer wall of the rotating rod. A second driving assembly for driving the installation ring and the first bevel gear to rotate is arranged on the side of the base plate close to the rotating seat. The first driving assembly and the second driving assembly are used to drive the rotating rod and the installation ring to rotate respectively from positions deviating from the center of the rotating rod.

[0029] First sliding grooves are symmetrically opened on the side of the base plate away from the rotating seat with the center point of the base plate as the center. First sliders are placed inside the first sliding grooves. One side of the first slider outside the first sliding groove is fixedly connected to the first connecting seat. First threaded rods are rotatably arranged on both sides of the side wall of the base plate.

[0030] A rotating groove is opened on the side of the base plate away from the rotating seat and is located between the two first sliding grooves. The mutually close ends of the two first threaded rods penetrate through the first sliding grooves and extend into the rotating groove. The mutually close ends of the two first threaded rods are fixedly sleeved with second bevel gears meshing with the first bevel gear. Through the meshing transmission of the first bevel gear and the second bevel gear and the cooperation of the threaded transmission of the first threaded rod, the two first sliders approach or move away from each other, so that the two symmetrically arranged detection assemblies approach or move away from each other. The two detection assemblies are symmetrically arranged with the center point of the base plate as the center.

[0031] Furthermore, the fixing mechanism includes:

[0032] The fixed seat is fixedly arranged on the top of the detection table. A fixing plate for clamping the flat actuator is movably arranged on the top of the fixed seat. There are two fixing plates, which are symmetrically arranged with respect to the center point of the fixed seat. A third driving component for driving the two fixing plates to approach or move away from each other is arranged on the side wall of the fixed seat, so that after the flat actuator is clamped and fixed by the fixing plates, the inlet and outlet oil pipes of the flat actuator are located at the middle position between the two detection mechanisms.

[0033] Furthermore, the moving component includes a base fixedly arranged on the top of the second connecting seat. A second sliding groove is formed on the top of the base. A second sliding block is placed inside the second sliding groove. A connecting piece is fixedly arranged on the top of the second sliding block. One side of the connecting piece close to the touch plate is fixedly connected to the control button. A second threaded rod extending into the second sliding groove is rotatably arranged on the side wall of the base, and one end side wall of the second threaded rod located inside the second sliding groove is threadedly connected to the second sliding block.

[0034] The present invention also provides a usage method of the weld detection device for the inlet and outlet oil ports of the deep-sea flat actuator made of TC4 material. By using the weld detection device for the inlet and outlet oil ports of the deep-sea flat actuator made of TC4 material, the method includes the following steps:

[0035] S1: Fix the flat actuator and make the inlet and outlet oil pipes of the flat actuator face the detection mechanism;

[0036] S2: After the flat actuator is fixed, drive the detection component to rotate through the rotating component, so as to detect the flatness and expansion amount of the weld of the inlet and outlet oil pipes through the first infrared distance sensor;

[0037] S3: During the detection process of step S2, adjust the position of the detection mechanism through the position adjustment component to comprehensively detect the weld of the inlet and outlet oil pipes, and judge the stability of the installation of the first infrared distance sensor through the first auxiliary component and the second auxiliary component, so as to limit the influence on the detection accuracy due to the instability of the first infrared distance sensor.

[0038] The present invention provides a weld detection device and method for the inlet and outlet oil ports of the deep-sea flat actuator made of TC4 material. Compared with the prior art, it has the following beneficial effects:

[0039] 1. In the present invention, by fixing the flat actuator and making the first infrared distance sensor rotate in a circular motion, thus, under the condition that the flat actuator is fixed, the flatness and expansion joint of the weld of the inlet and outlet oil pipes are detected by rotating the first infrared distance sensor, so as to improve the detection accuracy. The stability of the installation of the first infrared distance sensor is monitored through the first auxiliary component and the second auxiliary component, and the influence on the detection accuracy due to the loose installation of the first infrared distance sensor is avoided.

[0040] 2. The present invention fixes the flat actuator to be subjected to weld seam detection through a fixing mechanism. After the fixing plate clamps and fixes the flat actuator, the inlet and outlet oil pipes of the flat actuator are located at the middle position between the two detection mechanisms, so as to facilitate subsequent detection by the detection component. During the detection process, the rotation trajectories of the two detection components coincide, so as to facilitate the double detection of the same weld seam position. By comparing the detection results, the detection accuracy is improved;

[0041] By fixing the flat actuator and rotating the detection component, it is convenient to perform other detections on the flat actuator during the detection process.

[0042] 3. The present invention connects the position adjustment component and the fixing mechanism by means of screw drive and the like, so that the detection component is located at the detection position of the inlet and outlet oil pipes, and it is convenient to adjust the position of the detection component, so as to perform a comprehensive detection on the weld seam and improve the detection effect. By making the rotating rod have a hollow design and setting the first driving component and the second driving component both offset from the center of the rotating rod, it is convenient to set an electric slip ring in the rotating rod, so as to facilitate power supply to the first infrared ranging sensor without affecting the rotation of the substrate and the detection component, etc., thus not affecting the detection use.

[0043] 4. The present invention monitors the installation stability of the first infrared ranging sensor by means of pressurized gas for the first auxiliary component. When the position of the first infrared ranging sensor becomes loose, the information of the loosening of the first infrared ranging sensor can be sensitively captured. And the overall installation stability of the installation cover and the second connecting seat is monitored by the second auxiliary component to avoid affecting the detection accuracy.

[0044] 5. The present invention adjusts the position of the control button through the moving component to adjust the distance between the control button and the touch plate, so as to adjust the sensitivity of the early warning, which is convenient for adjustment according to the actual detection situation. The adjusting component is convenient for replacing the identification plates with different areas to adjust the sensitivity monitored by the second infrared ranging sensor. Description of the Drawings

[0045] Figure 1 It is a schematic diagram of the overall structure of the device for detecting the welds at the inlet and outlet of the deep-sea flat actuator made of TC4 material according to the present invention;

[0046] Figure 2 It is a schematic diagram of the structure of the detection mechanism of the present invention;

[0047] Figure 3 It is a schematic diagram of the structure of the mounting seat of the present invention;

[0048] Figure 4 It is a schematic diagram of the structures of the detection mechanism, the position adjustment component and the rotation component of the present invention;

[0049] Figure 5 Structural schematic diagram of the rotating component and the position adjustment component of the present invention;

[0050] Figure 6 Cross-sectional structural schematic diagram of the substrate and the rotating seat of the present invention;

[0051] Figure 7 Structural schematic diagram of the rotating rod, the rotating seat, the mounting ring and the first bevel gear of the present invention;

[0052] Figure 8 Structural schematic diagram of the detection mechanism of the present invention;

[0053] Figure 9 Cross-sectional structural schematic diagram of the mounting cover, the first connecting seat and the second connecting seat of the present invention;

[0054] Figure 10 Structural schematic diagram of the second auxiliary component of the present invention;

[0055] Figure 11 Structural schematic diagram of the moving component of the present invention;

[0056] Figure 12 Partial cross-sectional structural schematic diagram of the identification block of the present invention;

[0057] Figure 13 For the present invention Figure 12 Enlarged structural schematic diagram of A in;

[0058] Figure 14 Structural schematic diagram of the fixing mechanism of the present invention;

[0059] Figure 15 Structural schematic diagram of the inlet and outlet oil pipes of the flat actuator;

[0060] Figure 16 Structural schematic diagram of the flat actuator.

[0061] Reference numerals involved in the above-mentioned drawings: 1, detection table; 2, fixing mechanism; 3, detection mechanism; 4, control panel; 5, flat actuator; 51, inlet and outlet oil pipes;

[0062] 21, third driving component; 22, fixing seat; 23, fixing plate;

[0063] 31, mounting seat; 32, detection component; 33, rotating component; 34, position adjustment component;

[0064] 321, first auxiliary component; 322, second auxiliary component; 323, first connecting seat; 324, second connecting seat; 325, first infrared distance measuring sensor; 326, mounting cover; 327, moving component;

[0065] 3211. Identification block; 3212. Adjustment component; 3213. Second infrared distance measuring sensor; 3214. Guide rod; 3215. Identification plate; 3216. Card slot; 3217. Plug rod; 3218. First ring body; 3219. Second ring body;

[0066] 3221. First abutting rod; 3222. Second abutting rod; 3223. Touch plate; 3224. Sealing ring; 3225. Second piston block; 3226. Limit ring; 3227. Second cavity; 3228. First cavity; 3229. First piston block; 3220. Moving groove;

[0067] 3271. Second threaded rod; 328. Control button;

[0068] 331. Substrate; 332. Rotating seat; 333. First driving component; 334. Rotating rod;

[0069] 341. Second driving component; 342. First bevel gear; 343. Rotating groove; 344. First sliding groove; 345. First threaded rod; 346. Mounting ring. Detailed implementation mode

[0070] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0071] Embodiment 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 15 and Figure 16 , a weld detection device for the oil inlet and outlet of a deep-sea flat actuator made of TC4 material, including a detection table 1, a flat actuator 5, and oil inlet and outlet pipes 51 welded on both sides of the flat actuator 5. The oil inlet and outlet pipes 51 are respectively arranged on both sides of the flat actuator 5 and are respectively located at the upper and lower ends of both sides for actual use. The flat actuator 5 and the oil inlet and outlet pipes 51 are prior arts and will not be elaborated here. A control panel 4 is arranged on the outer side of the detection table 1, and further includes a fixing mechanism 2 arranged on the top of the detection table 1 for fixing the flat actuator 5 and a detection mechanism 3 arranged on the top of the detection table 1 for detecting the welds of the oil inlet and outlet pipes 51;

[0072] Please refer to Figure 2 , Figure 5 and Figure 8 , the detection mechanism 3 includes:

[0073] The mounting base 31 is fixedly arranged on the top of the detection table 1. A rotating assembly 33 is arranged on the top of the mounting base 31. Detection assemblies 32 are symmetrically arranged inside the rotating assembly 33. The detection assembly 32 includes:

[0074] The first connection seat 323 is arranged inside the rotating assembly 33. A second connection seat 324 is fixedly arranged on the side of the first connection seat 323 away from the rotating assembly 33. An installation cover 326 is fixedly arranged on the side of the second connection seat 324 away from the first connection seat 323. A first infrared distance sensor 325 is detachably arranged inside the installation cover 326. First auxiliary components 321 and second auxiliary components 322 are respectively arranged inside the first connection seat 323 and the second connection seat 324 to judge whether the position of the first infrared distance sensor 325 is offset.

[0075] Please refer to Figure 14 , the fixing mechanism 2 includes:

[0076] The fixing seat 22 is fixedly arranged on the top of the detection table 1. A fixing plate 23 for clamping the flat actuator 5 is movably arranged on the top of the fixing seat 22. There are two fixing plates 23, and they are symmetrically arranged with the center point of the fixing seat 22 as the center. A third driving assembly 21 for driving the two fixing plates 23 to approach each other or move away from each other is arranged on the side wall of the fixing seat 22. After the flat actuator 5 is clamped and fixed by the fixing plate 23, the inlet and outlet oil pipes 51 of the flat actuator 5 are located at the middle position between the two detection mechanisms 3.

[0077] The third driving assembly 21 includes a third sliding groove opened on the top of the fixing seat 22. Third sliders symmetrically arranged with the center point of the fixing seat 22 as the center are placed inside the third sliding groove. The top of the third slider is fixedly connected to the top of the fixing plate 23. A third threaded rod extending into the third sliding groove is rotatably arranged on the side wall of the fixing seat 22, and the third threaded rod is threadedly connected to the third slider. The third threaded rod is a bidirectional screw rod. A third servo motor is fixedly arranged on the side wall of the fixing seat 22. The output shaft of the third servo motor is fixedly connected to the end of the third threaded rod through a coupling, so as to drive the third sliders to approach each other or move away from each other, and drive the fixing plates 23 to approach each other or move away from each other, so as to clamp and fix the flat actuator 5.

[0078] In specific implementation, the third driving assembly 21 drives the fixing plates 23 to approach each other to clamp and fix the flat actuator 5. The fixing plates 23 approach each other to clamp and fix the flat actuator 5, which is convenient for the inlet and outlet oil pipes 51 of the flat actuator 5 to be located at the middle position between the two detection assemblies 32, so as to facilitate the detection assembly 32 to detect the weld of the inlet and outlet oil pipes 51;

[0079] By fixing the flat actuator 5 and rotating the first infrared ranging sensor 325 in a circular motion, when the flat actuator 5 is fixed, the flatness and expansion joints of the weld of the inlet and outlet pipes 51 are detected by rotating the first infrared ranging sensor 325. The flat actuator 5 is larger in size and heavier in weight than the infrared ranging sensor. Detecting by rotating the flat actuator 5 in a circular motion may cause the flat actuator 5 to shift. Therefore, the flat actuator 5 is fixed and the detection component 32 is rotated to improve the detection accuracy. During the detection process, the flat actuator 5 is fixed to facilitate other detections of the flat actuator 5, such as helium leak detection. When specifically performing helium leak detection, the inlet or outlet pipe for flatness and expansion amount detection is blocked. When blocking, it is blocked from the inner wall of the inlet or outlet pipe to avoid affecting subsequent flatness and expansion amount detections. Then, helium is transported into the flat actuator 5 from another inlet or outlet pipe to detect the helium leakage amount;

[0080] When the first infrared ranging sensor 325 of the detection component 32 rotates in a circular motion, based on the distance information monitored by the first infrared ranging sensor 325, the flatness of the weld of the inlet and outlet pipes 51 is judged. The difference between the distance measured by the first infrared ranging sensor 325 to the end of the inlet and outlet pipes 51 and the distance to the flat actuator 5 is measured and compared with the length of the inlet and outlet pipes 51 itself to judge the expansion amount of the inlet and outlet pipes 51 before and after being welded to the flat actuator 5.

[0081] Please refer to Figure 5 、 Figure 6 and Figure 7 As shown in, the rotating component 33 includes:

[0082] A rotating seat 332 is rotatably arranged on the top of the mounting seat 31. A substrate 331 is fixedly arranged on one side of the rotating seat 332 close to the fixing mechanism 2. A rotating rod 334 is fixedly arranged at the center of the side of the rotating seat 332 away from the substrate 331, and the rotating rod 334 extends to the side of the substrate 331 away from the rotating seat 332. The rotating rod 334 is designed to be hollow;

[0083] A first driving component 333 is arranged on the side wall of the mounting seat 31 and is used to drive the rotating rod 334 to rotate, thereby driving the detection component 32 to rotate. A position adjustment component 34 for adjusting the position of the detection component 32 is arranged on the side wall of the substrate 331.

[0084] The first driving component 333 includes a first servo motor fixedly arranged on the side wall of the mounting seat 31. The output shaft of the first servo motor is fixedly provided with a first rotating shaft through a coupling. The first rotating shaft is rotatably connected to the mounting seat 31. A first gear is fixedly sleeved on the side wall of the first rotating shaft and the side wall of the rotating rod 334. The two first gears are connected by a chain drive, so that the first servo motor drives the rotating rod 334 to rotate.

[0085] In specific implementation, the output shaft of the first servo motor drives the first rotating shaft to rotate through a coupling, and drives the rotating rod 334 to rotate through the transmission of the first gear and the chain. The rotating rod 334 drives the rotating seat 332 and the substrate 331 to rotate, thereby driving the detection assembly 32 to rotate, so that the first infrared distance measuring sensor 325 rotates in a circular shape around the center point of the substrate 331 to perform weld detection on the welded joints of the inlet and outlet oil pipes 51 of the flat actuator 5.

[0086] Please refer to Figure 5 、 Figure 6 and Figure 7 , the position adjustment assembly 34 includes:

[0087] The mounting ring 346 is rotatably arranged on the side wall of one end of the rotating rod 334 located inside the rotating seat 332 and extends to the side of the substrate 331 away from the rotating seat 332. A first bevel gear 342 is fixedly arranged on the side of the mounting ring 346 away from the rotating seat 332, and the inner wall of the first bevel gear 342 is sleeved on the outer wall of the rotating rod 334. A second driving assembly 341 for driving the mounting ring 346 and the first bevel gear 342 to rotate is arranged on the side of the substrate 331 close to the rotating seat 332. The first driving assembly 333 and the second driving assembly 341 are used to drive the rotating rod 334 and the mounting ring 346 to rotate respectively from positions deviating from the center of the rotating rod 334.

[0088] The first sliding grooves 344 are symmetrically opened on the side of the substrate 331 away from the rotating seat 332 with respect to the center point of the substrate 331. First sliders are placed inside the first sliding grooves 344. One side of the first sliders outside the first sliding grooves 344 is fixedly connected to the first connecting seat 323. First threaded rods 345 are rotatably arranged on both sides of the side wall of the substrate 331.

[0089] The rotating grooves 343 are opened on the side of the substrate 331 away from the rotating seat 332 and are located between the two first sliding grooves 344. The mutually approaching ends of the two first threaded rods 345 penetrate through the first sliding grooves 344 and extend into the rotating grooves 343. The mutually approaching ends of the two first threaded rods 345 are fixedly sleeved with second bevel gears meshing with the first bevel gear 342. Through the meshing transmission of the first bevel gear 342 and the second bevel gear and the cooperation of the threaded transmission of the first threaded rod 345, the two first sliders approach or move away from each other, so that the two symmetrically arranged detection assemblies 32 approach or move away from each other. The two detection assemblies 32 are symmetrically arranged with respect to the center point of the substrate 331.

[0090] The second driving component 341 includes a second servo motor fixedly arranged on the side wall of the substrate 331. The output shaft of the second servo motor is fixedly provided with a second rotating shaft through a coupling. The second rotating shaft is rotationally connected to the substrate 331. Both the side wall of the second rotating shaft and the outer wall of the mounting ring 346 are fixedly sleeved with second gears, and the two second gears are connected by a chain drive, so as to drive the mounting ring 346 and the first bevel gear 342 to rotate through the second servo motor.

[0091] In specific implementation, the output shaft of the second servo motor drives the second rotating shaft to rotate through a coupling. The second rotating shaft drives the mounting ring 346 and the first bevel gear 342 to rotate through the second gears and the chain. The first bevel gear 342 drives the second bevel gear and the first threaded rod 345 to rotate. By screwing the first threaded rod 345 and the first slider, the first slider drives the first connecting seat 323 to approach or move away from each other under the limit of the first sliding groove 344, so as to drive the two detection components 32 to approach or move away from each other, so as to adjust the position of the detection component 32, so as to facilitate the comprehensive detection of the weld seam and improve the detection effect.

[0092] By meshing the first bevel gear 342 and the second bevel gear, and matching the threaded driving directions of the first threaded rod 345 and the first slider, the two detection components 32 approach or move away from each other, so as to facilitate the coincidence of the rotation trajectories of the two detection components 32, so as to facilitate the double detection of the same weld seam position. By comparing the detection results, the detection accuracy is improved.

[0093] By making the rotating rod 334 have a hollow design, and arranging the first driving component 333 and the second driving component 341 both deviate from the center of the rotating rod 334, it is convenient to arrange an electric slip ring in the rotating rod 334, so as to facilitate the power supply to the first infrared ranging sensor 325, and does not affect the rotation of the substrate 331 and the detection component 32, etc., so as not to affect the detection use.

[0094] One side of the rotating seat 332 close to the second servo motor is designed to be open, so as to facilitate the installation of the chain for driving the second gear and avoid affecting the transmission use of the second driving component 341.

[0095] Embodiment 2: Please refer to Figure 8 、 Figure 9 and Figure 10 , the different technical solutions of this embodiment compared with Embodiment 1 are that the second auxiliary component 322 includes:

[0096] A first cavity 3228 is opened in the second connecting seat 324. The inner wall of the first cavity 3228 is sleeved with a first piston block 3229. A first abutting rod 3221 extending into the mounting cover 326 is fixedly arranged on the side wall of the first piston block 3229.

[0097] The second auxiliary component 322 further includes:

[0098] A second cavity 3227, which is opened in the second connecting seat 324 and communicates with the first cavity 3228. A moving groove 3220 is opened at the top of the second connecting seat 324. The inner wall of the second cavity 3227 is sleeved with a second piston block 3225. A second abutting rod 3222 extending into the moving groove 3220 is fixedly provided on the side wall of the second piston block 3225. Pressure gas is filled in both the first cavity 3228 and the second cavity 3227. The gas pressure on the side of the second piston block 3225 close to the second abutting rod 3222 in the second cavity 3227 is greater than the gas pressure on the side of the second piston block 3225 away from the second abutting rod 3222. The side walls of the first piston block 3229 and the second piston block 3225 are hermetically arranged with the inner walls of the first cavity 3228 and the second cavity 3227 respectively;

[0099] A touch plate 3223 is fixedly provided on the side wall of one end of the second abutting rod 3222 located in the moving groove 3220 and extends to the top of the second connecting seat 324. The side wall of the touch plate 3223 fits with the inner wall of the moving groove 3220 to limit the touch plate 3223. A control button 328 is movably arranged on the top of the second connecting seat 324 to give an early warning by squeezing the control button 328 through the touch plate 3223. A moving component 327 for adjusting the position of the control button 328 is arranged on the top of the second connecting seat 324.

[0100] In specific implementation, due to the detachable design of the first infrared distance measuring sensor 325, when the first infrared distance measuring sensor 325 is installed in the mounting cover 326 through bolts, the first infrared distance measuring sensor 325 squeezes the first abutting rod 3221, and the first abutting rod 3221 drives the first piston block 3229 to squeeze the gas in the first cavity 3228 to move, so that the gas in the first cavity 3228 is transmitted into the second cavity 3227 and squeezes the second piston block 3225 and the second abutting rod 3222 to move, so as to drive the touch plate 3223 away from the control button 328. When the first infrared distance measuring sensor 325 becomes loose, the squeezing force on the first abutting rod 3221 decreases. At this time, the gas on the side of the second piston block 3225 close to the second abutting rod 3222 in the second cavity 3227 squeezes the second piston block 3225, so that the gas in the first cavity 3228 squeezes the first piston block 3229 and the first abutting rod 3221. At the same time, the second abutting rod 3222 drives the touch plate 3223 to approach the control button 328, so as to give an early warning to prompt the staff that the installation of the first infrared distance measuring sensor 325 becomes loose, that is, to avoid affecting the detection accuracy due to this;

[0101] By setting the pressurized gas, when the first infrared ranging sensor 325 becomes loose at the issuing position, the information of the looseness of the first infrared ranging sensor 325 can be sensitively captured, avoiding affecting the detection accuracy due to this.

[0102] The communication position between the first cavity 3228 and the second cavity 3227 is located on the inner wall of the first cavity 3228 away from the first abutting rod 3221;

[0103] The inner walls of the first cavity 3228 and the second cavity 3227 are both fixedly sleeved with limiting rings 3226 to limit the positions of the first piston block 3229 and the second piston block 3225 respectively. By setting the limiting rings 3226 to limit the positions of the first piston block 3229 and the second piston block 3225, it is avoided that the first piston block 3229 drives the first abutting rod 3221 to completely move into the first cavity 3228, and it is also avoided that the second piston block 3225 moves to the communication position between the first cavity 3228 and the second cavity 3227, avoiding affecting the use due to this;

[0104] The inner wall of the mounting cover 326 is provided with a first through hole communicating with the first cavity 3228 for the first abutting rod 3221 to move. Inside the second connecting seat 324 and between the second cavity 3227 and the moving groove 3220, a second through hole sleeving the second abutting rod 3222 is provided, and a sealing ring 3224 is fixedly sleeved on the inner wall of the second through hole to seal between the second abutting rod 3222 and the second through hole. The second through hole communicates with the second cavity 3227. By setting the sealing ring 3224 to seal the movement of the second abutting rod 3222, while ensuring the sealing performance, it is convenient for the second abutting rod 3222 to drive the touch plate 3223 to move. The first piston block 3229 and the second piston block 3225 are respectively in dynamic sealing with the inner wall of the first cavity 3228 and the inner wall of the second cavity 3227, facilitating actual use.

[0105] Please refer to Figure 11 , the moving assembly 327 includes a base fixedly provided on the top of the second connecting seat 324. A second sliding groove is provided on the top of the base. A second slider is placed inside the second sliding groove. A connecting member is fixedly provided on the top of the second slider. One side of the connecting member close to the touch plate 3223 is fixedly connected to the control button 328. A second threaded rod 3271 extending into the second sliding groove is rotatably provided on the side wall of the base, and the side wall of the end of the second threaded rod 3271 located inside the second sliding groove is threadedly connected to the second slider.

[0106] During specific implementation, rotate the second threaded rod 3271. During the rotation of the second threaded rod 3271, it drives the second slider to move along the second sliding groove, thereby driving the connecting member to move, and further driving the control button 328 to move, so as to adjust the distance between the control button 328 and the touch plate 3223, thereby adjusting the sensitivity of the warning, facilitating adjustment according to the actual detection situation.

[0107] Please refer to Figure 12 and Figure 13 , the first auxiliary component 321 includes:

[0108] An identification block 3211, fixedly arranged on the inner wall of the first connecting seat 323 and designed in a frustum shape. An adjusting component 3212 is arranged on the side of the identification block 3211 away from the second connecting seat 324;

[0109] A second infrared ranging sensor 3213, fixedly arranged on the inner wall of the first connecting seat 323 and arranged opposite to the identification block 3211. The inside of the first connecting seat 323 is designed to be hollow. An opening is provided at the top of the first connecting seat 323 and above the second infrared ranging sensor 3213, and a cover plate is fixedly arranged at the opening through bolts. By opening the cover plate, it is convenient to operate the adjusting component 3212.

[0110] The adjusting component 3212 includes:

[0111] A guide rod 3214, sleeved on the side of the identification block 3211 close to the second infrared ranging sensor 3213. An identification plate 3215 is fixedly arranged on the side of the guide rod 3214 away from the identification block 3211. A jack is provided on the side wall of the guide rod 3214. A guide hole adapted to the guide rod 3214 is provided on the side of the identification block 3211 close to the second infrared ranging sensor 3213, and a placement groove is provided on the inner wall of the guide hole;

[0112] An insertion rod 3217, sleeved on the inner wall of the placement groove, with one end extending into the guide hole and the other end extending outside the identification block 3211. The insertion rod 3217 is adapted to the jack. A first ring body 3218 is fixedly sleeved on the side wall of the insertion rod 3217, and the outer wall of the first ring body 3218 is sleeved in the placement groove. A second ring body 3219 is fixedly sleeved on the inner wall of the placement groove, and the inner wall of the second ring body 3219 is sleeved on the side wall of the insertion rod 3217. A spring is sleeved on the side wall of the insertion rod 3217 between the first ring body 3218 and the second ring body 3219. The first ring body 3218 is located at the end of the insertion rod 3217 away from the guide hole, and the second ring body 3219 is located at the end of the insertion rod 3217 close to the guide hole. The ends of the guide rod 3214 and the insertion rod 3217 are both designed in an arc shape;

[0113] A card slot 3216 is provided on the bottom inner wall of the guide hole. A card plate adapted to the card slot 3216 is fixedly arranged at the bottom of the guide rod 3214, so that after the guide rod 3214 is inserted into the guide slot, the jack faces the insertion rod 3217.

[0114] In specific implementation, when the second connecting seat 324 and the mounting cover 326 become loose as a whole, at this time, the first infrared distance sensor 325 becomes loose. At this time, the end of the identification block 3211, that is, the side close to the second infrared distance sensor 3213, will deviate. Also, because the identification block 3211 is designed in a frustum shape, the distance information monitored by the second infrared distance sensor 3213 changes, so as to detect the stability of the overall installation of the second connecting seat 324, the mounting cover 326, etc., and avoid affecting the detection accuracy due to this;

[0115] By inserting the guide rod 3214 into the guide hole, the insertion rod 3217 is inserted into the jack, so as to facilitate the replacement of the identification plate 3215. By replacing the identification plates 3215 with different areas, the sensitivity of the second infrared distance sensor 3213 to monitor is adjusted, thus facilitating actual use;

[0116] By providing the card slot 3216 and the card board, the guide rod 3214 and the card board are inserted into the guide hole along the card slot 3216, so that the jack faces the insertion rod 3217, which is convenient for the insertion rod 3217 to be inserted into the jack under the action of the spring, and is convenient for fixing the identification plate 3215. When replacing, pull the end of the insertion rod 3217 extending outside the identification block 3211, so that the insertion rod 3217 is separated from the jack. Immediately, the identification plate 3215 can be replaced.

[0117] The first servo motor and the control button 328 of the present invention are all connected to the electric slip ring installed in the rotating rod 334 through wires, and then the electric slip ring is connected to the control panel 4 and the external power supply, so as to facilitate actual control and use. The control button 328 is connected to the designated warning light of the control panel 4. The above are all prior arts and will not be elaborated here.

[0118] The embodiment of the present invention also provides a usage method of the weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material is adopted. The method includes the following steps:

[0119] S1: Fix the flat actuator 5 through the fixing mechanism 2, and make the oil inlet and outlet pipes 51 of the flat actuator 5 face the detection mechanism 3, so as to facilitate the detection of the welds of the oil inlet and outlet pipes 51. By fixing the flat actuator 5, the detection assembly 32 rotates to detect the oil inlet and outlet pipes 51 of the flat actuator 5, reducing the deviation of the flat actuator 5 caused by movement and affecting the detection accuracy, and facilitating other detections when detecting the welds of the oil inlet and outlet pipes 51;

[0120] S2: After fixing the completed flat actuator 5, drive the detection component 32 through the rotating component 33 to perform a circular motion around the center point of the substrate 331, so that the detection component 32 rotates correspondingly around the weld of the inlet and outlet oil pipe 51, in order to detect the flatness and expansion amount of the weld of the inlet and outlet oil pipe 51 through the first infrared distance measuring sensor 325;

[0121] S3: During the detection process of step S2, adjust the position of the detection mechanism 3 through the position adjustment component 34 to comprehensively detect the weld of the inlet and outlet oil pipe 51, and judge the stability of the installation of the first infrared distance measuring sensor 325 through the first auxiliary component 321 and the second auxiliary component 322, so as to limit the influence of the instability of the first infrared distance measuring sensor 325 on the detection accuracy.

[0122] Meanwhile, the content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art.

[0123] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0124] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Deep-sea flat actuator oil inlet and outlet weld detection device for TC4 material, including a detection table, a flat actuator, and oil inlet and outlet pipes welded on both sides of the flat actuator. A control panel is arranged on the outer side of the detection table, and it is characterized in that, It further includes a fixing mechanism arranged on the top of the detection table for fixing the flat actuator and a detection mechanism arranged on the top of the detection table for detecting the welds of the inlet and outlet oil pipes. The detection mechanism includes: A mounting base fixedly arranged on the top of the detection table. A rotating component is arranged on the top of the mounting base. Detection components are symmetrically arranged inside the rotating component. The detection components include: A first connection seat arranged inside the rotating component. A second connection seat is fixedly arranged on the side of the first connection seat away from the rotating component. An installation cover is fixedly arranged on the side of the second connection seat away from the first connection seat. A first infrared distance sensor is detachably arranged inside the installation cover. A first auxiliary component and a second auxiliary component are respectively arranged inside the first connection seat and the second connection seat to judge whether the position of the first infrared distance sensor has shifted. The second auxiliary component includes: A first cavity is opened in the second connection seat. A first piston block is sleeved on the inner wall of the first cavity. A first abutting rod extending into the installation cover is fixedly arranged on the side wall of the first piston block; The second auxiliary component further includes: A second cavity is opened in the second connection seat and is communicated with the first cavity. A moving groove is opened on the top of the second connection seat. A second piston block is sleeved on the inner wall of the second cavity. A second abutting rod extending into the moving groove is fixedly arranged on the side wall of the second piston block. Pressure gas is filled inside both the first cavity and the second cavity. The gas pressure on the side of the second piston block close to the second abutting rod in the second cavity is greater than the gas pressure on the side of the second piston block away from the second abutting rod. The side walls of the first piston block and the second piston block are respectively hermetically arranged with the inner walls of the first cavity and the second cavity; A touch plate is fixedly arranged on the side wall of one end of the second abutting rod in the moving groove and extends to the top of the second connection seat. The side wall of the touch plate is attached to the inner wall of the moving groove to limit the touch plate. A control button is movably arranged on the top of the second connection seat to give an alarm by squeezing the control button through the touch plate. A moving component for adjusting the position of the control button is arranged on the top of the second connection seat.

2. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 1, characterized in that The communication part between the first cavity and the second cavity is located on the inner wall of the first cavity away from the first abutting rod; Limit rings are fixedly sleeved on the inner walls of both the first cavity and the second cavity to limit the positions of the first piston block and the second piston block respectively; A first through hole communicated with the first cavity is opened on the inner wall of the installation cover for the first abutting rod to move. A second through hole sleeving the second abutting rod is opened inside the second connection seat between the second cavity and the moving groove. And a sealing ring is fixedly sleeved on the inner wall of the second through hole to seal between the second abutting rod and the second through hole. The second through hole is communicated with the second cavity.

3. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 1, characterized in that The first auxiliary component includes: An identification block is fixedly arranged on the inner wall of the first connection seat and is designed in a frustum shape. An adjusting component is arranged on the side of the identification block away from the second connection seat; A second infrared distance sensor is fixedly arranged on the inner wall of the first connection seat and is arranged facing the identification block. The inside of the first connection seat is hollow. An opening is opened on the top of the first connection seat and above the second infrared distance sensor. And a cover plate is fixedly arranged at the opening through bolts.

4. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 3, characterized in that, The adjusting component includes: The guide rod is sleeved on one side of the identification block close to the second infrared distance measuring sensor. A sign board is fixedly arranged on the side of the guide rod away from the identification block. A jack is formed in the side wall of the guide rod. A guide hole adapted to the guide rod is formed in one side of the identification block close to the second infrared distance measuring sensor. A placement groove is formed in the inner wall of the guide hole. The insertion rod is sleeved on the inner wall of the placement groove and extends into the guide hole. The insertion rod is adapted to the jack. A first ring body is fixedly sleeved on the side wall of the insertion rod, and the outer wall of the first ring body is sleeved in the placement groove. A second ring body is fixedly sleeved on the inner wall of the placement groove, and the inner wall of the second ring body is sleeved on the side wall of the insertion rod. A spring is sleeved on the side wall of the insertion rod between the first ring body and the second ring body. The first ring body is located at one end of the insertion rod away from the guide hole, and the second ring body is located at one end of the insertion rod close to the guide hole. The ends of the guide rod and the insertion rod are both designed to be arc-shaped. A clamping groove is formed in the bottom inner wall of the guide hole. A clamping plate adapted to the clamping groove is fixedly arranged at the bottom of the guide rod, so that after the guide rod is inserted into the guide groove, the jack faces the insertion rod.

5. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 1, characterized in that The rotation assembly includes: A rotating seat is rotatably arranged on the top of the mounting seat. A base plate is fixedly arranged on one side of the rotating seat close to the fixing mechanism. A rotating rod is fixedly arranged at the center of the side of the rotating seat away from the base plate, and the rotating rod extends to the side of the base plate away from the rotating seat. The rotating rod is designed to be hollow. A first driving assembly is arranged on the side wall of the mounting seat and is used to drive the rotating rod to rotate, so as to drive the detection assembly to rotate. A position adjustment assembly for adjusting the position of the detection assembly is arranged on the side wall of the base plate.

6. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 5, characterized in that The position adjustment assembly includes: An installation ring is rotatably arranged on the side wall of one end of the rotating rod located inside the rotating seat and extends to the side of the base plate away from the rotating seat. A first bevel gear is fixedly arranged on the side of the installation ring away from the rotating seat, and the inner wall of the first bevel gear is sleeved on the outer wall of the rotating rod. A second driving assembly for driving the installation ring and the first bevel gear to rotate is arranged on the side of the base plate close to the rotating seat. The first driving assembly and the second driving assembly are used to drive the rotating rod and the installation ring to rotate respectively from positions deviating from the center of the rotating rod. First sliding grooves are symmetrically formed on the side of the base plate away from the rotating seat with the center point of the base plate as the center. First sliders are placed inside the first sliding grooves. One side of the first slider located outside the first sliding groove is fixedly connected to the first connecting seat. First threaded rods are rotatably arranged on both sides of the side wall of the base plate. A rotating groove is formed on the side of the base plate away from the rotating seat and is located between the two first sliding grooves. The mutually close ends of the two first threaded rods penetrate through the first sliding grooves and extend into the rotating groove. Second bevel gears meshing with the first bevel gear are fixedly sleeved on the mutually close ends of the two first threaded rods. Through the meshing transmission of the first bevel gear and the second bevel gear and the cooperation of the threaded transmission of the first threaded rods, the two first sliders approach or move away from each other, so that the two symmetrically arranged detection assemblies approach or move away from each other. The two detection assemblies are symmetrically arranged with the center point of the base plate as the center.

7. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 1, characterized in that The fixing mechanism includes: The fixed seat is fixedly arranged at the top of the detection table. A fixing plate for clamping the flat actuator is movably arranged on the top of the fixed seat. There are two fixing plates, which are symmetrically arranged with respect to the center point of the fixed seat. A third driving component for driving the two fixing plates to approach or move away from each other is arranged on the side wall of the fixed seat, so that after the flat actuator is clamped and fixed by the fixing plates, the inlet and outlet oil pipes of the flat actuator are located at the middle position between the two detection mechanisms.

8. The weld detection device for the oil inlet and outlet of the deep-sea flat actuator made of TC4 material according to claim 1, characterized in that The moving component includes a base fixedly arranged on the top of the second connecting seat. A second sliding groove is formed on the top of the base. A second sliding block is placed inside the second sliding groove. A connecting piece is fixedly arranged on the top of the second sliding block. One side of the connecting piece close to the touch plate is fixedly connected to the control button. A second threaded rod extending into the second sliding groove is rotatably arranged on the side wall of the base, and one end side wall of the second threaded rod located inside the second sliding groove is in threaded connection with the second sliding block.

9. Method for using a weld detection device for the oil inlet and outlet of a deep-sea flat actuator made of TC4 material, characterized in that, Using the deep-sea flat actuator inlet and outlet oil port weld detection device made of the TC4 material according to any one of claims 1-8, the method includes the following steps: S1: Fix the flat actuator and make the inlet and outlet oil pipes of the flat actuator face the detection mechanism. S2: After the flat actuator is fixed, drive the detection component to rotate through the rotating component to detect the flatness and expansion amount of the inlet and outlet oil pipe welds through the first infrared distance measuring sensor. S3: During the detection process of step S2, adjust the position of the detection mechanism through the position adjustment component to comprehensively detect the welds of the inlet and outlet oil pipes, and judge the stability of the installation of the first infrared distance measuring sensor through the first auxiliary component and the second auxiliary component to limit the influence of the instability of the first infrared distance measuring sensor on the detection accuracy.

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