Ocean engineering plane segment construction welding quality detection method

Abstract

The invention discloses an ocean engineering plane section construction welding quality detection method, and belongs to the technical field of ocean engineering equipment manufacturing, the ocean engineering plane section construction welding quality detection method comprises a transverse plate, the transverse plate is parallel to the surface of a ship body and is perpendicular to the side edge of a component, and one end of the transverse plate is provided with a moving assembly moving in the length direction of the top of the component. The size of a weld leg of a weld joint can be measured through the first laser displacement sensor and the sliding length of the measuring sliding rod, the width and the thickness of the weld joint are calculated according to the size of the weld leg, the distance from the second laser displacement sensor to a welding spot can be measured through the second laser displacement sensor, and the thickness of the weld joint is known. In addition, the device controls the device to move along the welding seam through the moving assembly, manual measurement is not needed, the width of the welding seam at each position of the welding seam, the thickness of the welding seam and the surplus height of the welding seam can be accurately measured, the functionality is higher, and the practicability is higher.

Description

Technical Field

[0001] The invention relates to a quality detection device, in particular to a method for detecting the quality of welding in a planar segmented construction of an ocean engineering project, and belongs to the technical field of ocean engineering equipment manufacturing. Background Art

[0002] The planar segmentation construction of marine engineering is an important construction method in the manufacturing of marine engineering equipment. In marine engineering construction, planar segmentation usually refers to the process of cutting, processing, assembling and welding steel plates in the workshop to form planar structural parts with certain shapes and sizes. These planar segments can be the bottom plate, deck, bulkhead and other parts of the hull. There are various components on the planar segments (such as longitudinal bones, ribs, stiffeners, etc.). After welding is completed, in order to ensure the quality of welding, quality inspection of the welds of the components is required.

[0003] In the process of weld inspection, although it is currently possible to measure with a weld inspection ruler, it requires manual operation, which is not only time-consuming and labor-intensive, but also unable to perform detailed inspection of the weld during the inspection process. It can only be roughly inspected by selecting measurement points, which results in measurement errors and unsatisfactory measurement results.

[0004] Therefore, a method for detecting welding quality of planar segmented construction of marine engineering is designed to optimize the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a method for detecting the quality of welding in planar segmented construction of marine engineering. An inner square frame is formed by a right-angle plate and two groups of slidable sliding rods. When detecting the right-angle welds between components and hull parts, the right-angle plate is attached to the side of the component and the hull, and the sliding rod at the end of the right-angle plate is attached to the outer side of the weld. The sliding length of the sliding rod is measured by a first laser displacement sensor, and the weld leg size of the weld can be measured, and the width and thickness of the weld can be calculated based on the weld leg size. In addition, the diagonal length of the square formed by the inner side of the right-angle plate, the component and the hull is fixed, and the second laser displacement sensor is installed on the diagonal line. The distance from the second laser displacement sensor to the welding point can be measured by the second laser displacement sensor, and the weld thickness is known, and the residual height of the weld can be obtained by calculation. In addition, the device moves along the weld by a mobile component control device, without manual measurement, and can accurately measure the weld. The width, thickness and residual height of the weld at each position of the weld can be measured accurately, and the functionality and practicality are higher. The lifting assembly composed of a rectangular sleeve, a rectangular column, a first screw, an adjusting wheel and a first threaded groove is used in conjunction with a clamping assembly composed of a positioning plate, a movable plate, a vertical rod, an extrusion spring and a limit ring. Not only can the use height of the device be adjusted, but also during use, even if the cross plate vibrates slightly, the elastic force of the clamping assembly can always ensure the fit between the right-angle plate and the hull, thereby ensuring the accuracy of the size of the weld foot on the hull. The moving assembly composed of a convex plate, a rotating motor, a driving wheel, a first roller, a driven gear, a driving gear, a shell, a telescopic groove, an extrusion block, a second roller, a second screw and a second threaded groove can control the movement of the device without manual operation. In addition, it can ensure that the side end of the right-angle plate is always fitted with the side of the component, thereby ensuring the accuracy of the size of the weld foot on the component.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0007] A method for inspecting the welding quality of a planar segmented construction of an ocean engineering project comprises a transverse plate, the transverse plate being parallel to the surface of a hull and perpendicular to the side of a component, a moving assembly moving along the length direction of the top of the component being provided at one end of the transverse plate, a data processing and controller being provided at the top of the moving assembly, a lifting assembly extending vertically downward being provided at the other end of the transverse plate, a right-angle plate having an end portion in contact with the hull and the surface of the component being provided at the bottom end of the lifting assembly, a pressing assembly being provided between the top of the right-angle plate and the lifting assembly, the lengths of the two inner sides of the right-angle plate being the same, and sliding members being provided at both ends of the right-angle plate A sliding groove is provided inside the sliding groove, and a sliding rod perpendicular to the end of the right-angle plate is slidably installed. A guide wheel is rotatably installed at one end of the sliding rod located on the inner side of the right-angle plate, and the guide wheel is fitted to the side of the weld. A measuring plate is vertically fixed to the end of the sliding rod away from the guide wheel. A first laser displacement sensor is installed on one side of both ends of the right-angle plate close to the measuring plate. A reset piece is provided on the top end of the sliding rod close to the guide wheel. A fixed block is fixed at the corner inside the right-angle plate, and the outer side surface of the fixed block is parallel to the diagonal line, and a second laser displacement sensor is vertically installed at the middle position of the outer side surface of the fixed block.

[0008] Preferably: the reset member comprises a positioning plate and a tension spring, the positioning plate is vertically fixed to one end of the top of the slide rod close to the guide wheel, and a tension spring is fixed between the side edge of the positioning plate and the inner side of the right-angle plate.

[0009] Preferably: the lifting assembly includes a rectangular sleeve, a rectangular column, a first screw, an adjusting wheel and a first threaded groove, the rectangular sleeve is vertically installed at the end of the horizontal plate, the bottom end of the rectangular sleeve is vertically slidably installed with a rectangular column, the first screw is rotatably installed inside the rectangular sleeve, the top end of the first screw is located above the rectangular sleeve, the top end of the first screw is fixed with an adjusting wheel, the bottom end of the first screw is threadedly connected to the rectangular column, and the top of the rectangular column is provided with a first threaded groove along the length direction.

[0010] Preferably: the clamping assembly includes a positioning plate, a movable plate, a vertical rod, an extrusion spring and a limit ring, the positioning plate is fixed on the top of the right-angle plate, the movable plate is provided parallel to the top of the positioning plate, the vertical rod is evenly and vertically fixed on the outer side of the top of the positioning plate, the vertical rod is slidably connected to the movable plate, an extrusion spring is provided between the top of the positioning plate and the movable plate, and the bottom end of the rectangular column is fixedly connected to the top of the movable plate.

[0011] Preferably: the vertical rod surrounds the outside of the extrusion spring, and a limiting ring is fixed between the top ends of the vertical rods, and the limiting ring is sleeved on the outside of the rectangular column.

[0012] Preferably: the moving assembly includes a rib-shaped plate, a rotating motor, a driving wheel, a first roller and an extrusion piece, the rib-shaped plate is clamped on the top of the component, the end of the cross plate is fixed to the outside of the rib-shaped plate, a rotating motor is installed on the side of the rib-shaped plate close to the cross plate, the driving wheel is installed on the inner top of the rib-shaped plate for uniform rotation, the output end of the rotating motor is connected to a group of driving wheels, a first roller is installed on the side of the rib-shaped plate close to the rotating motor for uniform rotation, and a clamping piece for tightly fitting the side of the component with the first roller is provided on the side of the rib-shaped plate away from the rotating motor.

[0013] Preferably: a driven gear is installed on the top of the first rotating roller, a driving gear is installed on the output end of the rotating motor, and the driven gear is meshed with the driving gear.

[0014] Preferably: the clamping member includes a protective shell, a telescopic groove, an extrusion block, a second roller, a second screw and a second threaded groove; the protective shell is fixed to the side of the convex plate away from the rotating motor; the protective shell is provided with a telescopic groove inside; the extrusion block is slidably installed inside the telescopic groove; the second roller is evenly installed on the side of the extrusion block close to the inside of the convex plate; the second screw is rotatably installed on the outer side of the protective shell; the second screw is threadedly connected to the extrusion block; the extrusion block is provided with a second threaded groove matching the second screw.

[0015] Preferably, the outer sides of the driving wheel, the first rotating roller and the limiting ring are all provided with rubber anti-skid pads, and the rubber anti-skid pads are all provided with anti-skid patterns.

[0016] Preferably: an industrial camera is vertically mounted on the top of the inner side of the right-angle plate, and a third laser displacement sensor is mounted on the side of the convex plate away from the horizontal plate.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a method for detecting the quality of welding in planar segmented construction of marine engineering. The method comprises an inner square frame formed by a right-angle plate and two groups of slidable sliding rods. When detecting the right-angle welds between components and hull parts, the right-angle plate is attached to the side of the component and the hull, and the sliding rod at the end of the right-angle plate is attached to the outer side of the weld. The sliding length of the sliding rod is measured by a first laser displacement sensor, and the size of the weld leg of the weld can be measured. The width and thickness of the weld can be calculated based on the size of the weld leg. In addition, the diagonal length of the square formed by the inner side of the right-angle plate, the component and the hull is fixed, and the second laser displacement sensor is installed on the diagonal line. The distance from the second laser displacement sensor to the welding point can be measured by the second laser displacement sensor. The thickness of the weld is known, and the excess height of the weld can be obtained by calculation. In addition, the device moves along the weld by a mobile component control device, and no manual measurement is required. The width, thickness and excess height of the weld at each position of the weld can be accurately measured, and the device has stronger functionality and higher practicality.

[0019] The lifting assembly consisting of a rectangular sleeve, a rectangular column, a first screw rod, an adjusting wheel, and a first threaded groove is used in conjunction with a clamping assembly consisting of a positioning plate, a movable plate, a vertical rod, an extrusion spring, and a limit ring. Not only can the height of the device be adjusted, but also, during use, even if the transverse plate vibrates slightly, the elastic force of the clamping assembly can always ensure the fit between the right-angle plate and the hull, thereby ensuring the accuracy of the size of the weld foot on the hull.

[0020] The movement of the device can be controlled by a moving assembly consisting of a shaped plate, a rotating motor, a driving wheel, a first roller, a driven gear, a driving gear, a protective shell, a telescopic groove, an extrusion block, a second roller, a second screw rod, and a second thread groove, without manual operation. In addition, it can ensure that the side end of the right-angle plate is always in contact with the side of the component and the accuracy of the weld foot size on the component is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a detection state structure diagram of a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0022] Figure 2 It is a diagram showing the overall structure of a device in a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0023] Figure 3 It is a diagram of the initial state of the interior of a right-angle plate of a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0024] Figure 4 A lifting assembly diagram of a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0025] Figure 5 A diagram of a clamping assembly of a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0026] Figure 6 A diagram of a moving component of a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0027] Figure 7 It is a side structural diagram of an extrusion block of a preferred embodiment of a method for detecting welding quality of a planar segmented construction of an ocean engineering project according to the present invention;

[0028] Figure 8 The present invention is a schematic diagram of the measurement of weld width, thickness and excess height in a preferred embodiment of a method for detecting welding quality of planar segmented construction of marine engineering.

[0029] In the figure: 1. horizontal plate; 2. moving component; 3. data processing and controller; 4. lifting component; 5. clamping component; 6. right-angle plate; 7. slide groove; 8. slide rod; 9. measuring plate; 10. first laser displacement sensor; 11. guide wheel; 12. fixed block; 13. second laser displacement sensor; 14. positioning plate; 15. tension spring; 16. industrial camera; 17. rectangular sleeve; 18. rectangular column; 19. first screw; 20. adjusting wheel; 21. first thread groove; 22. positioning plate; 23. movable plate; 24. vertical rod; 25. extrusion spring; 26. limit ring; 27. shaped plate; 28. rotating motor; 29. ​​driving wheel; 30. first roller; 31. driven gear; 32. driving gear; 33. protective shell; 34. telescopic groove; 35. extrusion block; 36. second roller; 37. second screw; 38. second thread groove. DETAILED DESCRIPTION

[0030] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0031] like Figure 1-Figure 8 As shown, this embodiment provides a method for detecting the welding quality of a planar segmented construction of an ocean engineering project, comprising a transverse plate 1, the transverse plate 1 being parallel to the surface of the hull and perpendicular to the side of the component, one end of the transverse plate 1 being provided with a moving component 2 moving along the length direction of the top of the component, the top of the moving component 2 being provided with a data processing and controller 3, the other end of the transverse plate 1 being provided with a lifting component 4 extending vertically downward, the bottom end of the lifting component 4 being provided with a right-angle plate 6 whose end is in contact with the hull and the surface of the component, a clamping component 5 being provided between the top of the right-angle plate 6 and the lifting component 4, the two inner sides of the right-angle plate 6 being of the same length, and both ends of the right-angle plate 6 being provided with a slide groove 7, A sliding rod 8 perpendicular to the end of the right-angle plate 6 is slidably installed inside the slide groove 7, and a guide wheel 11 is rotatably installed on the end of the sliding rod 8 located on the inner side of the right-angle plate 6, and the guide wheel 11 is fitted to the side of the weld, and a measuring plate 9 is vertically fixed to the end of the sliding rod 8 away from the guide wheel 11. A first laser displacement sensor 10 is installed on one side of the two ends of the right-angle plate 6 close to the measuring plate 9, and a reset part is provided on the top end of the sliding rod 8 close to the guide wheel 11. A fixed block 12 is fixed at the corner inside the right-angle plate 6, and the outer side surface of the fixed block 12 is parallel to the diagonal, and a second laser displacement sensor 13 is vertically installed in the middle position of the outer side surface of the fixed block 12.

[0032] The overall working principle is as follows: when in use, the moving component 2 is placed on the top of the component. The moving component 2 can move along the length direction of the component, and the cross plate 1 is on the same side as the weld to be detected. Then the extension and retraction of the lifting component 4 is controlled to make the bottom end of the right-angle plate 6 contact the top of the hull, and at the same time, the side of the right-angle plate 6 is also attached to the side of the component. Since the two sides inside the right-angle plate 6 are of equal length, the figure enclosed by the right-angle plate 6, the component and the hull is a square. In addition, in the initial state, the guide wheels 11 at the ends of the slide rods 8 on both ends of the right-angle plate 6 are attached to each other, and in the detection process, the outer sides of the guide wheels 11 are respectively attached to the sides of the welding points on the hull and the component, and in the process of the moving component 2 controlling the movement of the right-angle plate 6, it is attached to the outside of the weld and moves. Since the guide wheel 11 is attached to the side of the weld, the slide rod 8 will be controlled to slide toward the outside of the right-angle plate 6, and the measuring plate 9 that is attached to the first laser displacement sensor 10 in the initial state will be moved to a distance. At this time, the first laser position sensor 10 The displacement sensor 10 is started to measure the distance between the measuring plate 9 and the first laser displacement sensor 10. The measured length is the size of the weld leg at the weld. The weld leg size on the hull is L1, and the weld leg size on the component is X1. The detection structure is transmitted to the inside of the data processing and controller 3. According to the Pythagorean theorem and the triangle area calculation formula, the width Y1 of the weld and the thickness D2 of the weld can be obtained. In addition, the figure surrounded by the right-angle plate 6, the component and the hull is a square, and the length of its diagonal is fixed to Y2. The second laser displacement sensor 13 is also installed on the diagonal. The distance D3 between the second laser displacement sensor 13 and the corner of the right-angle plate 6 is fixed. The distance between the welds measured by the second laser displacement sensor 13 is D1, and then the total length of the diagonal Y2-D1-D2-D3=the residual height D4 of the weld. Therefore, during the use of the device, the width, thickness and residual height of the weld at each position of the weld can be directly measured.

[0033] In this embodiment, the reset member includes a positioning plate 14 and a tension spring 15. The positioning plate 14 is vertically fixed to one end of the top of the slide rod 8 close to the guide wheel 11, and a tension spring 15 is fixed between the side of the positioning plate 14 and the inner side of the right-angle plate 6.

[0034] Local working principle: When the guide wheel 11 moves along the edge of the weld, since the weld is not straight and has a certain curvature, the tension spring 15 inside the reset member can apply a thrust toward the weld to the guide wheel 11, ensuring that the guide wheel 11 is always in contact with the edge of the weld, thereby ensuring the accuracy of the detection.

[0035] In this embodiment, the lifting assembly 4 includes a rectangular sleeve 17, a rectangular column 18, a first screw 19, an adjusting wheel 20 and a first threaded groove 21. The rectangular sleeve 17 is vertically installed at the end of the horizontal plate 1. The rectangular column 18 is vertically slidably installed at the bottom end of the rectangular sleeve 17. The first screw 19 is rotatably installed inside the rectangular sleeve 17. The top end of the first screw 19 is located above the rectangular sleeve 17. The adjusting wheel 20 is fixed to the top end of the first screw 19. The bottom end of the first screw 19 is threadedly connected to the rectangular column 18. The top of the rectangular column 18 is provided with a first threaded groove 21 along the length direction.

[0036] Partial working principle: During use, by rotating the adjusting wheel 20, the rectangular column 18 can be controlled to slide vertically inside the rectangular sleeve 17, thereby adjusting the position of the right-angle plate 6 to adapt to detection at different positions.

[0037] In this embodiment, the clamping assembly 5 includes a positioning plate 22, a movable plate 23, a vertical rod 24, an extrusion spring 25 and a limit ring 26. The positioning plate 22 is fixed on the top of the right-angle plate 6. The movable plate 23 is provided parallel to the top of the positioning plate 22. The vertical rod 24 is evenly and vertically fixed on the outer side of the top of the positioning plate 22. The vertical rod 24 is slidably connected to the movable plate 23. An extrusion spring 25 is provided between the top of the positioning plate 22 and the movable plate 23. The bottom end of the rectangular column 18 is fixedly connected to the top of the movable plate 23.

[0038] Local working principle: During the use of the device, after using the lifting assembly 4 to control the right-angle plate 6 to fit against the hull, it is still necessary to control the rectangular column 18 to drop a certain length to compress the extrusion spring 25. This can not only ensure the contact effect between the right-angle plate 6 and the hull when the device moves horizontally, but also ensure that when the transverse plate 1 shakes during the movement, the shaking amplitude is less than the deformation of the extrusion spring 25, thereby ensuring that the position of the right-angle plate 6 is stable and will not separate from the hull, which is more practical.

[0039] In this embodiment, the vertical rod 24 surrounds the outer side of the extrusion spring 25 , and a limiting ring 26 is fixed between the top ends of the vertical rod 24 , and the limiting ring 26 is sleeved on the outer side of the rectangular column 18 .

[0040] Partial working principle: The use of the vertical rod 24 can ensure the vertical sliding of the movable plate 23 and limit the extrusion spring 25.

[0041] In this embodiment, the moving component 2 includes a shaped plate 27, a rotating motor 28, a driving wheel 29, a first roller 30 and an extrusion member. The shaped plate 27 is stuck on the top of the component, and the end of the cross plate 1 is fixed on the outside of the shaped plate 27. The rotating motor 28 is installed on the side of the shaped plate 27 close to the cross plate 1. The driving wheel 29 is installed on the inner top of the shaped plate 27 for uniform rotation. The output end of the rotating motor 28 is connected to a group of driving wheels 29. The first roller 30 is installed on the side of the shaped plate 27 close to the rotating motor 28 for uniform rotation. The side of the shaped plate 27 away from the rotating motor 28 is provided with a clamping member for tightly fitting the side of the component with the first roller 30.

[0042] Local working principle: When installing the device, the shaped plate 27 is clamped on the top of the component, the driving wheel 29 is fitted with the top of the component, and then the side of the component is squeezed by the clamping member, so that the other side of the component is in contact with the surface of the first roller 30, while also ensuring that the right-angle plate 6 is fitted with the surface of the component. When moving, start the rotating motor 28 to drive the driving wheel 29 to rotate, and move the device along the length direction of the top of the component for detection.

[0043] In this embodiment, a driven gear 31 is installed on the top of the first rotating roller 30 , and a driving gear 32 is installed on the output end of the rotating motor 28 , and the driven gear 31 is meshed with the driving gear 32 .

[0044] Partial working principle: During the rotation of the rotary motor 28, the driven gear 31 and the driving gear 32 mesh with each other, so the rotation of the first roller 30 can be controlled at the same time to improve the driving effect of the device.

[0045] In this embodiment, the clamping member includes a protective shell 33, a telescopic groove 34, an extrusion block 35, a second roller 36, a second screw 37 and a second threaded groove 38. The protective shell 33 is fixed to the side of the convex plate 27 away from the rotating motor 28. The protective shell 33 is provided with a telescopic groove 34. The extrusion block 35 is slidably installed inside the telescopic groove 34. The second roller 36 is evenly installed on the side of the extrusion block 35 close to the inside of the convex plate 27. The second screw 37 is rotatably installed on the outer side of the protective shell 33. The second screw 37 is threadedly connected to the extrusion block 35. The extrusion block 35 is provided with a second threaded groove 38 that cooperates with the second screw 37.

[0046] Local working principle: After the top of the component contacts the driving wheel 29, the second screw 37 is rotated to control the extrusion block 35 to move toward the direction of the component. The second roller 36 on the outside of the extrusion block 35 contacts the surface of the component and extrude the component. The top and both sides of the component are limited respectively, which can ensure the stability of the device during movement.

[0047] In this embodiment, rubber anti-skid pads are provided on the outer sides of the driving wheel 29 , the first rotating roller 30 and the limiting ring 26 , and anti-skid patterns are provided on the rubber anti-skid pads.

[0048] Local working principle: The anti-slip grooves can avoid slipping on the surface of components during driving, making the movement of the device more stable.

[0049] In this embodiment, an industrial camera 16 is vertically mounted on the top of the inner side of the right-angle plate 6 , and a third laser displacement sensor is mounted on the side of the convex plate 27 away from the horizontal plate 1 .

[0050] Local working principle: During the device inspection process, the weld can be photographed through the industrial camera 16, and the acquired data can be transmitted to the inside of the data processing and controller 3, and compared and processed inside the image database, and then the defects such as cracks, pores, slag inclusions, and unfusion at the weld can be detected. In addition, during the weld inspection process, the third laser displacement sensor can be used to detect the distance between adjacent components.

[0051] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A method for detecting welding quality of a planar segmented construction of an offshore engineering project, characterized in that: The invention comprises a detection device for the detection method, the detection device comprising a transverse plate (1), the transverse plate (1) being parallel to the surface of the hull and perpendicular to the side of the component, one end of the transverse plate (1) being provided with a moving component (2) moving along the length direction of the top of the component, the top of the moving component (2) being provided with a data processing and controller (3), the other end of the transverse plate (1) being provided with a lifting component (4) extending vertically downward, the bottom end of the lifting component (4) being provided with a right-angle plate (6) whose end is in contact with the hull and the surface of the component, a pressing component (5) being provided between the top of the right-angle plate (6) and the lifting component (4), the two inner sides of the right-angle plate (6) being of the same length, both ends of the right-angle plate (6) being provided with a slide groove (7), the interior of the slide groove (7) being provided with a plurality of slide grooves. A slide rod (8) is slidably mounted perpendicular to the end of the right-angle plate (6); a guide wheel (11) is rotatably mounted on one end of the slide rod (8) located inside the right-angle plate (6), and the guide wheel (11) is fitted to the side of the weld; a measuring plate (9) is vertically fixed to one end of the slide rod (8) away from the guide wheel (11); a first laser displacement sensor (10) is mounted on one side of both ends of the right-angle plate (6) close to the measuring plate (9); a reset piece is provided on the top end of the slide rod (8) close to the guide wheel (11); a fixed block (12) is fixed at the corner inside the right-angle plate (6); the outer side surface of the fixed block (12) is parallel to the diagonal line; and a second laser displacement sensor (13) is vertically mounted at the middle position of the outer side surface of the fixed block (12).

2. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 1, characterized in that: The reset member comprises a positioning plate (14) and a tension spring (15). The positioning plate (14) is vertically fixed to one end of the top of the slide rod (8) close to the guide wheel (11). The tension spring (15) is fixed between the side edge of the positioning plate (14) and the inner side of the right-angle plate (6).

3. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 2, characterized in that: The lifting assembly (4) comprises a rectangular sleeve (17), a rectangular column (18), a first screw rod (19), an adjusting wheel (20) and a first threaded groove (21). The rectangular sleeve (17) is vertically mounted on the end of the horizontal plate (1). The bottom end of the rectangular sleeve (17) is vertically slidably mounted with the rectangular column (18). The first screw rod (19) is rotatably mounted inside the rectangular sleeve (17). The top end of the first screw rod (19) is located above the rectangular sleeve (17). The adjusting wheel (20) is fixed to the top end of the first screw rod (19). The bottom end of the first screw rod (19) is threadedly connected to the rectangular column (18). The top end of the rectangular column (18) is provided with a first threaded groove (21) along the length direction.

4. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 3, characterized in that: The clamping assembly (5) comprises a positioning plate (22), a movable plate (23), a vertical rod (24), a pressing spring (25) and a limiting ring (26); the positioning plate (22) is fixed on the top of the right-angle plate (6); the movable plate (23) is arranged parallel to the top of the positioning plate (22); the vertical rod (24) is evenly and vertically fixed on the outer side of the top of the positioning plate (22); the vertical rod (24) and the movable plate (23) are slidably connected; the pressing spring (25) is arranged between the top of the positioning plate (22) and the movable plate (23); and the bottom end of the rectangular column (18) is fixedly connected to the top of the movable plate (23).

5. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 4, characterized in that: The vertical rod (24) surrounds the outer side of the extrusion spring (25), and a limiting ring (26) is fixed between the top ends of the vertical rod (24), and the limiting ring (26) is sleeved on the outside of the rectangular column (18).

6. A method for detecting welding quality of planar segmented construction of marine engineering according to any one of claims 1 to 5, characterized in that: The moving assembly (2) comprises a shaped plate (27), a rotating motor (28), a driving wheel (29), a first rotating roller (30) and an extrusion piece. The shaped plate (27) is clamped on the top of the component. The end of the transverse plate (1) is fixed on the outer side of the shaped plate (27). The rotating motor (28) is installed on the side of the shaped plate (27) close to the transverse plate (1). The driving wheel (29) is installed on the inner top of the shaped plate (27) for uniform rotation. The output end of the rotating motor (28) is connected to a group of driving wheels (29). The first rotating roller (30) is installed on the side of the shaped plate (27) close to the rotating motor (28) for uniform rotation. A pressing piece for tightly fitting the side edge of the component with the first rotating roller (30) is provided on the side of the shaped plate (27) away from the rotating motor (28).

7. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 6, characterized in that: A driven gear (31) is installed on the top of the first rotating roller (30), and a driving gear (32) is installed on the output end of the rotating motor (28), and the driven gear (31) is meshed with the driving gear (32).

8. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 6, characterized in that: The pressing member comprises a protective shell (33), a telescopic groove (34), an extrusion block (35), a second roller (36), a second screw (37) and a second threaded groove (38). The protective shell (33) is fixed on a side of the shaped plate (27) away from the rotating motor (28). The protective shell (33) is provided with a telescopic groove (34). The extrusion block (35) is slidably installed inside the telescopic groove (34). The second roller (36) is evenly installed on the side of the extrusion block (35) close to the inside of the shaped plate (27). The second screw (37) is rotatably installed on the outer side of the protective shell (33). The second screw (37) is threadedly connected to the extrusion block (35). The extrusion block (35) is provided with a second threaded groove (38) matched with the second screw (37).

9. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 8, characterized in that: The outer sides of the driving wheel (29), the first rotating roller (30) and the limiting ring (26) are all provided with rubber anti-skid pads, and the rubber anti-skid pads are all provided with anti-skid patterns.

10. A method for detecting welding quality of a planar segmented construction of an offshore engineering project according to claim 9, characterized in that: An industrial camera (16) is vertically mounted on the top of the inner side of the right-angle plate (6), and a third laser displacement sensor is mounted on the side of the convex plate (27) away from the horizontal plate (1).

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