Device for detecting pre-tightness of bevel butt weld of longitudinal bulkhead

Abstract

A longitudinal bulkhead bevel butt weld pre-tightness detection device disclosed by the present invention comprises a fixed plate and a vacuum cover, a transverse screw rod and a rotating shaft are rotatably arranged in the fixed plate, a thread sleeve is arranged on the surface of the transverse screw rod in a threaded manner, and a U-shaped plate is fixedly arranged at the bottom end of the thread sleeve. After welding of the longitudinal bulkhead corner of the FPSO ship body is completed, the driving assembly drives the transverse screw rod to rotate, so that the screw sleeve drives the vacuum cover to move to the longitudinal bulkhead corner butt welding seam through the lifting assembly and the U-shaped plate, and then the driving assembly drives the rotating shaft to rotate, so that the lifting assembly drives the vacuum cover to make contact with the longitudinal bulkhead corner butt welding seam; therefore, different positions of the longitudinal bulkhead bevel butt weld of the FPSO ship body can be detected conveniently, the vacuum cover does not need to be manually taken down and fixed again, and the situation that multiple workers need to operate at the same time to accelerate detection of the longitudinal bulkhead bevel butt weld of the FPSO ship body is avoided, so that the detection device is more convenient and faster to use.

Description

Technical Field

[0001] The invention relates to the technical field of weld pre-tightness detection, in particular to a longitudinal bulkhead angle butt weld pre-tightness detection device. Background Art

[0002] FPSO is a floating production storage and offloading unit. The longitudinal bulkhead angle of FPSO is usually located at the connection between the longitudinal bulkhead and other structures. The FPSO hull will be affected by the impact of waves, the force of sea wind and the internal stress of the hull itself caused by loading cargo and equipment. The stress borne by the longitudinal bulkhead can be effectively dispersed to other structures connected to it through reasonable angle design and smooth transition at the longitudinal bulkhead angle. The longitudinal bulkhead angle refers to the longitudinally arranged bulkhead, and the bent part of its structure usually turns from one plane of the bulkhead to another plane to form a bending area of ​​a certain angle. This angle can be a right angle, obtuse angle or acute angle, but the right angle is more common. From the perspective of the overall structure, the reasonable setting of the longitudinal bulkhead angle helps to disperse stress, enhance the structural strength of the ship or container, and make it more stable when subjected to external loads.

[0003] Since the longitudinal bulkhead angle is a bending area formed at a certain angle from one plane of the bulkhead to another plane, the two plates are usually welded together by welding technology, and there will be welds at the welding joints of the two plates. The firmness of the welds directly affects the use of the longitudinal bulkhead angle. When the ship is sailing on the water, the outside seawater may penetrate into various cabins through these poorly sealed welds, or cause the internal liquid to leak out. Therefore, after the longitudinal bulkhead angle welding is completed, the sealing of the welds needs to be tested by a detection device.

[0004] Usually, the vacuum box is placed stably on the weld, soap liquid is applied to the weld, and the vacuum box is evacuated by a vacuum pump. The pressure inside the vacuum box is tested by the pressure gauge on the vacuum box. After waiting for a while, if the pressure value on the pressure gauge decreases, it means that the weld is poorly sealed, and when external air enters the vacuum box through the weld, bubbles will appear in the soap liquid, thereby determining the location of the weld leak.

[0005] However, during use, when inspecting welds at different positions, it is necessary to manually remove the vacuum box and place the vacuum box at the next inspection position. This process wastes a lot of time. Secondly, it is necessary to manually spray soap liquid on the weld inspection position, which increases the workload of the staff. If the welds need to be inspected quickly, two or more staff members are required to cooperate, so that when the vacuum box is removed, another staff member can spray soap liquid on the next weld. Based on the above problems, the present application proposes a longitudinal bulkhead angle butt weld pre-tightness detection device. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a device for detecting the pre-tightness of a longitudinal bulkhead corner butt weld, which is used to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A device for detecting the pre-tightness of a longitudinal bulkhead angle butt weld, comprising a fixed plate and a vacuum hood, wherein a transverse screw and a rotating shaft are rotatably arranged inside the fixed plate, a threaded sleeve is threadedly arranged on the surface of the transverse screw, a U-shaped plate is fixedly arranged on the bottom end of the threaded sleeve, a guide sleeve is fixedly arranged on the side of the U-shaped plate away from the threaded sleeve, a guide rod is slidably arranged inside the guide sleeve, the guide rod is fixedly installed between the facing surfaces of the fixed plates, a lifting assembly is arranged on the surface of the rotating shaft, the lifting assembly is used to drive the vacuum hood to contact and separate from the longitudinal bulkhead angle, an auxiliary assembly is arranged on the top of the vacuum hood, a spraying assembly is arranged on the right side of the vacuum hood, the spraying assembly is used to spray soap liquid onto the weld of the longitudinal bulkhead angle, and a driving assembly is arranged on the right side of the fixed plate, the driving assembly is used to drive the transverse screw and the rotating shaft to rotate.

[0008] Preferably, the lifting assembly includes a rotating sleeve slidably arranged on the surface of the rotating shaft, a limiting groove is provided inside the rotating sleeve, a limiting convex strip is slidably arranged inside the limiting groove, the limiting convex strip is fixedly installed on the surface of the rotating shaft, a limiting frame is rotatably arranged on the surface of the rotating sleeve, the limiting frame is fixedly connected to the screw sleeve and the guide sleeve, an active bevel gear is fixedly arranged on the surface of the rotating sleeve, a driven bevel gear is meshingly arranged on the surface of the active bevel gear, a vertical screw is fixedly arranged inside the driven bevel gear, the vertical screw is rotatably arranged inside the limiting frame, an internally threaded tube is threaded on the surface of the vertical screw, the internally threaded tube is slidably arranged inside the U-shaped plate, and the internally threaded tube is fixedly installed on the top of the vacuum cover.

[0009] Preferably, the auxiliary component includes a moving rod fixedly mounted on the top of the vacuum cover, a mounting plate is slidably provided on the surface of the moving rod, the mounting plate is fixedly mounted on the side of the vacuum cover, a mounting ring is fixedly mounted on the top of the moving rod, and a spring is connected between the bottom of the mounting ring and the top of the mounting plate.

[0010] Preferably, the spray assembly includes a movable plate fixedly mounted on the right side of the vacuum hood, a spray pipe fixedly arranged inside the movable plate, a connecting elbow fixedly arranged at the liquid inlet end of the spray pipe, a bellows fixedly arranged at the liquid inlet end of the connecting elbow, a liquid inlet elbow fixedly arranged at the liquid inlet end of the bellows, and the liquid inlet elbow fixedly mounted inside the fixed plate.

[0011] Preferably, the driving assembly includes a connecting frame fixedly installed on the right side of the fixed plate, a servo motor and an electric push rod are fixedly arranged on the right side of the connecting frame, a rotating shaft is fixedly arranged on the output end of the servo motor, a driving gear is fixedly arranged on the surface of the rotating shaft, and two driven gears are meshed on the surface of the driving gear, and limiting sleeves are fixedly arranged inside the two driven gears, and fixed shafts are rotatably arranged inside the two limiting sleeves, and the two fixed shafts are respectively fixedly arranged on the front end of the transverse screw and the front end of the rotating shaft, and a pushing plate 1 and a pushing plate 2 are fixedly arranged on the output end of the electric push rod, a lower rotating gear plate is fixedly arranged inside the pushing plate 2, a lower connecting gear plate is arranged on the left side of the lower rotating gear plate, and the lower connecting gear plate is fixedly arranged on the right side of the fixed shaft below, an upper rotating gear plate is fixedly arranged inside the pushing plate 2, an upper connecting gear plate is arranged on the right side of the upper rotating gear plate, and the upper connecting gear plate is fixedly arranged on the left side of the upper limiting sleeve.

[0012] Preferably, the upper rotating tooth plate and the lower rotating tooth plate are provided with connecting grooves inside, and the two fixed shaft surfaces are fixedly provided with connecting plates for adapting to the connecting grooves, and the connecting plates are slidably connected to the connecting grooves.

[0013] Preferably, the fixing plate and the bottom of the vacuum cover are both triangular in shape, an electromagnet is fixed to the bottom of the fixing plate, and the vacuum cover is made of a transparent material.

[0014] Preferably, a limiting plate for limiting the position of the internally threaded tube is provided on the surface of the internally threaded tube, and the limiting plate is slidably arranged inside the U-shaped plate.

[0015] Preferably, a sealing gasket is fixedly provided at the bottom of the vacuum cover, and the sealing gasket is made of elastic rubber. A vacuum tube and a pressure gauge are fixedly provided at the rear side of the vacuum cover.

[0016] Preferably, the transverse cross-section of the limiting sleeve is an I-shaped structure, and the limiting sleeve is made of metal material.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The longitudinal bulkhead angle butt weld pre-tightness detection device, when the longitudinal bulkhead angle welding of the FPSO hull is completed, drives the transverse screw to rotate through the driving component, so that the screw sleeve drives the vacuum cover to move to the longitudinal bulkhead angle butt weld through the lifting component and the U-shaped plate, and then drives the rotating shaft to rotate through the driving component so that the lifting component drives the vacuum cover to contact the longitudinal bulkhead angle butt weld, so that it is convenient to detect different positions of the longitudinal bulkhead angle butt weld of the FPSO hull, without manually removing and re-fixing the vacuum cover, and avoiding the need for multiple workers to operate at the same time to speed up the detection of the longitudinal bulkhead angle butt weld of the FPSO hull, so that the detection device is more convenient and quick to use.

[0018] 2. In the longitudinal bulkhead corner butt weld pre-tightness detection device, during the movement of the vacuum cover, the spray pipe will be driven to move through the moving plate, so that the spray pipe sprays soap liquid on the longitudinal bulkhead corner butt weld, so that the vacuum cover and the spraying of soap liquid are carried out at the same time, so that the sealing detection speed of the longitudinal bulkhead corner butt weld is improved, and the soap liquid is avoided from being sprayed too early and causing the soap liquid to be evaporated, so as to facilitate the observation of the leakage point of the longitudinal bulkhead corner butt weld.

[0019] 3. The longitudinal bulkhead angle butt weld pre-tightness detection device can drive the vacuum cover to move through the lifting assembly, so that the vacuum cover can contact and separate from the longitudinal bulkhead angle butt weld, thereby facilitating the removal and fixation of the vacuum cover, thereby facilitating the movement of the vacuum cover, so that the vacuum cover can be moved to different positions of the longitudinal bulkhead angle butt weld, thereby performing sealing detection on the welds at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a positive isometric drawing of the structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a schematic diagram of the partial structure of the lifting assembly of the present invention; Figure 4 It is another partial structural schematic diagram of the present invention; Figure 5 It is a schematic diagram of the structure of the vacuum cover of the present invention; Figure 6 It is a schematic diagram of the structure of the spray assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 8 It is a schematic diagram of the local structure of the driving component of the present invention.

[0021] In the figure: 1, fixed plate; 2, transverse screw; 3, screw sleeve; 4, U-shaped plate; 5, guide sleeve; 6, guide rod; 7, rotating shaft; 8, limit convex strip; 9, rotating sleeve; 10, limit groove; 11, limit frame; 12, active bevel gear; 13, driven bevel gear; 14, vertical screw; 15, internal threaded pipe; 16, vacuum cover; 17, moving rod; 18, mounting plate; 19, mounting ring; 20, spring; 21, sealing pad; 22, vacuum tube ; 23. Pressure gauge; 24. Moving plate; 25. Spray pipe; 26. Connecting elbow; 27. Bellows; 28. Liquid inlet elbow; 29. ​​Connecting frame; 30. Servo motor; 31. Electric push rod; 32. Rotating shaft; 33. Driving gear; 34. Driven gear; 35. Limit sleeve; 36. Fixed shaft; 37. Push plate 1; 38. Push plate 2; 39. Lower rotating gear plate; 40. Lower connecting gear plate; 41. Upper rotating gear plate; 42. Upper connecting gear plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Reference Figure 1-8A longitudinal bulkhead angle butt weld pre-tightness detection device comprises a fixing plate 1 and a vacuum cover 16. A sealing gasket 21 is fixedly arranged at the bottom of the vacuum cover 16. The sealing gasket 21 is made of elastic rubber. A vacuum tube 22 and a pressure gauge 23 are fixedly arranged at the rear side of the vacuum cover 16. The sealing gasket 21 made of elastic rubber can seal the vacuum cover 16 and the longitudinal bulkhead angle connection, thereby preventing external air from entering the vacuum cover 16 through the vacuum cover 16 and the longitudinal bulkhead angle connection, resulting in a decrease in the value of the pressure gauge 23, thereby ensuring the accuracy of the sealing detection result. It is connected to an external vacuum pump to facilitate vacuuming of the vacuum cover 16. A transverse screw 2 and a rotating shaft 7 are rotatably arranged inside the fixed plate 1. A screw sleeve 3 is threadedly arranged on the surface of the transverse screw 2. A U-shaped plate 4 is fixedly arranged at the bottom end of the screw sleeve 3. A guide sleeve 5 is fixedly arranged on the side of the U-shaped plate 4 away from the screw sleeve 3. A guide rod 6 is slidably arranged inside the guide sleeve 5. The guide rod 6 is fixedly installed between the opposite surfaces of the fixed plate 1. The bottoms of the fixed plate 1 and the vacuum cover 16 are both triangular in shape. An electromagnet is fixed on the bottom of the fixed plate 1. The vacuum cover 16 is made of transparent material. The triangular bottom is convenient for the fixed plate 1 and The vacuum hood 16 is in contact with the longitudinal bulkhead corner, wherein the fixing plate 1 and the bottom of the vacuum hood 16 are in the shape of a right triangle, and the transparent vacuum hood 16 is convenient for observing the bubbles of the soap solution, thereby facilitating the observation of the leakage point of the longitudinal bulkhead corner butt weld, and the surface of the rotating shaft 7 is provided with a lifting assembly, and the lifting assembly is used to drive the vacuum hood 16 to contact and separate from the longitudinal bulkhead corner, and the top of the vacuum hood 16 is provided with an auxiliary assembly, and the right side of the vacuum hood 16 is provided with a spraying assembly, and the spraying assembly is used to spray the soap solution to the weld of the longitudinal bulkhead corner, and the right side of the fixing plate 1 is provided with a driving assembly, and the driving assembly is used to drive the transverse screw 2 and The rotating shaft 7 rotates, and the transverse screw 2 or the rotating shaft 7 is driven to rotate through the driving assembly. When the transverse screw 2 rotates, the screw sleeve 3 drives the vacuum hood 16 to move to the detection position of the longitudinal bulkhead corner butt weld through the U-shaped plate 4 and the lifting assembly. At the same time, the vacuum hood 16 can drive the spraying assembly to move, so that when the vacuum hood 16 moves to the detection position of the longitudinal bulkhead corner butt weld, soap liquid can be sprayed on the detection position. When the rotating shaft 7 is driven to rotate, the lifting assembly can drive the vacuum hood 16 to separate from or contact the longitudinal bulkhead corner, thereby facilitating the movement of the vacuum hood 16 to the detection position of the longitudinal bulkhead corner butt weld.

[0024] As a preferred implementation in this embodiment, please refer to Figure 3 and Figure 4As shown, the lifting assembly includes a rotating sleeve 9 slidably arranged on the surface of the rotating shaft 7, a limiting groove 10 is provided inside the rotating sleeve 9, a limiting convex strip 8 is slidably arranged inside the limiting groove 10, and the limiting convex strip 8 is fixedly installed on the surface of the rotating shaft 7, a limiting frame 11 is rotatably arranged on the surface of the rotating sleeve 9, and the limiting frame 11 is fixedly connected to the screw sleeve 3 and the guide sleeve 5, and an active bevel gear 12 is fixedly arranged on the surface of the rotating sleeve 9, and a driven bevel gear 13 is meshed with the surface of the active bevel gear 12, and the driven bevel gear 13 is meshed with the driven bevel gear 13. A vertical screw 14 is fixedly arranged inside the U-shaped plate 4, and the vertical screw 14 is rotatably arranged inside the limiting frame 11. An internal threaded tube 15 is threadedly arranged on the surface of the vertical screw 14, and a limiting plate for limiting the internal threaded tube 15 is arranged on the surface of the internal threaded tube 15. The limiting plate is slidably arranged inside the U-shaped plate 4. Through the setting of the limiting plate, the internal threaded tube 15 can be guaranteed to move vertically inside the U-shaped plate 4, and the internal threaded tube 15 can be prevented from rotating with the vertical screw 14, so that the internal threaded tube 15 can drive the vacuum cover 16 to move. The internal threaded tube 15 is slidably arranged inside the U-shaped plate 4, and the internal threaded tube 15 is fixedly installed on the top of the vacuum cover 16. The rotating shaft 7 drives the rotating sleeve 9 to rotate through the limiting convex strip 8 and the limiting groove 10, so that the rotating sleeve 9 drives the vertical screw 14 to rotate through the active bevel gear 12 and the driven bevel gear 13, so that the internal threaded tube 15 drives the vacuum cover 16 to move, so that the vacuum cover 16 is separated from and in contact with the longitudinal bulkhead angle, so that the vacuum cover 16 is conveniently moved to different positions of the longitudinal bulkhead angle butt weld, so that the vacuum cover 16 is There is no manual operation required for removal and installation, which makes the detection device more convenient to use. After the vacuum hood 16 contacts the angle of the longitudinal bulkhead, pressure can be applied to the vacuum hood 16 through the lifting assembly, so that the vacuum hood 16 applies pressure to the sealing gasket 21, and the connection between the vacuum hood 16 and the angle of the longitudinal bulkhead is sealed through the deformation and rebound of the sealing gasket 21, so that the vacuum hood 16 can be evacuated faster, and the sealing gasket 21 will not be in insufficient contact with the angle of the longitudinal bulkhead, causing external air to enter the vacuum hood 16.

[0025] As a preferred implementation in this embodiment, please refer to Figure 4 As shown, the auxiliary component includes a moving rod 17 fixedly mounted on the top of the vacuum hood 16, a mounting plate 18 is slidably provided on the surface of the moving rod 17, the mounting plate 18 is fixedly mounted on the side of the vacuum hood 16, a mounting ring 19 is fixedly provided on the top of the moving rod 17, a spring 20 is connected between the bottom of the mounting ring 19 and the top of the mounting plate 18, when the vacuum hood 16 moves, the vacuum hood 16 pushes the moving rod 17 to move, so that the mounting ring 19 stretches and compresses the spring 20, thereby facilitating the auxiliary manufacturing of the vacuum hood 16 and avoiding breakage at the connection between the vacuum hood 16 and the internal threaded tube 15.

[0026] As a preferred implementation in this embodiment, please refer to Figure 6As shown, the spray assembly includes a movable plate 24 fixedly mounted on the right side of the vacuum hood 16, a spray pipe 25 fixedly arranged inside the movable plate 24, a connecting elbow 26 fixedly arranged at the liquid inlet end of the spray pipe 25, a bellows 27 fixedly arranged at the liquid inlet end of the connecting elbow 26, a liquid inlet elbow 28 fixedly arranged at the liquid inlet end of the bellows 27, and the liquid inlet elbow 28 fixedly mounted inside the fixed plate 1, the vacuum hood 16 drives the spray pipe 25 to move through the movable plate 24, and the connecting elbow 26 pushes the bellows 27 to contract, so that the spray pipe 25 sprays soap liquid on the longitudinal bulkhead angle butt weld of the inspection section, thereby moving the vacuum hood 16 and spraying the soap liquid simultaneously, so that the vacuum hood 16 can be moved to the longitudinal bulkhead angle butt weld inspection position in a short time of spraying the soap liquid, thereby eliminating the need to manually spray soap liquid on the longitudinal bulkhead angle butt weld.

[0027] As a preferred implementation in this embodiment, please refer to Figure 7 and Figure 8As shown, the driving assembly includes a connecting frame 29 fixedly mounted on the right side of the fixing plate 1, a servo motor 30 and an electric push rod 31 are fixedly arranged on the right side of the connecting frame 29, a rotating shaft 32 is fixedly arranged at the output end of the servo motor 30, a driving gear 33 is fixedly arranged on the surface of the rotating shaft 32, two driven gears 34 are meshed on the surface of the driving gear 33, and limiting sleeves 35 are fixedly arranged inside the two driven gears 34, the limiting sleeves 35 have an I-shaped structure in the transverse section, and the limiting sleeves 35 are made of metal material. The position of the driven gear 34 can be limited by the limiting sleeves 35 with an I-shaped transverse section, thereby avoiding the position of the driven gear 34 from being offset, and the two limiting sleeves 35 are fixedly arranged inside the two driven gears 34. 5 are rotatably provided with fixed shafts 36 inside, and the two fixed shafts 36 are respectively fixedly installed at the front end of the transverse screw rod 2 and the front end of the rotating shaft 7, and the output end of the electric push rod 31 is fixedly provided with a push plate 1 37 and a push plate 2 38, and a lower rotating tooth plate 39 is fixedly provided inside the push plate 2 38, and a lower connecting tooth plate 40 is provided inside the left side of the lower rotating tooth plate 39, and the lower connecting tooth plate 40 is fixedly installed on the right side of the fixed shaft 36 below, and an upper rotating tooth plate 41 is fixedly provided inside the push plate 2 38, and connecting grooves are provided inside the upper rotating tooth plate 41 and the lower rotating tooth plate 39, and connecting plates for adapting to the connecting grooves are fixedly provided on the surfaces of the two fixed shafts 36, and the connecting plates are connected to the connecting grooves. The groove and groove are slidingly connected, and the upper rotating tooth plate 41 and the lower rotating tooth plate 39 drive the fixed shaft 36 to rotate through the connecting groove and the connecting plate, so that the fixed shaft 36 drives the transverse screw 2 and the rotating shaft 7 to rotate. An upper connecting tooth plate 42 is arranged on the right side of the upper rotating tooth plate 41, and the upper connecting tooth plate 42 is fixedly installed on the left side of the upper limiting sleeve 35. The electric push rod 31 drives the lower rotating tooth plate 39 and the upper rotating tooth plate 41 to move through the pushing plate 1 37 and the pushing plate 2 38. When the lower rotating tooth plate 39 contacts the lower connecting tooth plate 40, the upper rotating tooth plate 41 and the upper connecting tooth plate 42 are separated, and the servo motor 30 drives the driving gear 33 to rotate through the rotating shaft 32, and the driven gear 34 drives the lower connecting tooth plate 40 and the upper connecting tooth plate 42 to rotate through the limit sleeve 35, and the lower rotating tooth plate 39 drives the fixed shaft 36 below to rotate through the connecting groove and the connecting plate, thereby driving the transverse screw 2 to rotate, while the upper connecting tooth plate 42 and the upper rotating tooth plate 41 are separated, and the upper rotating tooth plate 41 does not rotate, so that the rotating shaft 7 does not rotate. When the lower rotating tooth plate 39 is separated from the lower connecting tooth plate 40, the upper rotating tooth plate 41 contacts the upper connecting tooth plate 42. At this time, the upper rotating tooth plate 41 can drive the fixed shaft 36 above to rotate through the connecting groove and the connecting plate, thereby driving the rotating shaft 7 to rotate, while the lower rotating tooth plate 39 does not rotate, thereby controlling the rotation of the transverse screw 2 and the rotating shaft 7 in sections.

[0028] When in use: when it is necessary to detect the sealing of the longitudinal bulkhead angle butt weld, the fixing plate 1 is fixed at the longitudinal bulkhead angle by an electromagnet, the output end of the servo motor 30 drives the rotating shaft 32 to rotate, and the rotating shaft 32 drives the driving gear 33 to rotate, so that the driving gear 33 drives the driven gear 34 to rotate, and the driven gear 34 drives the limiting sleeve 35 to rotate, the lower limiting sleeve 35 drives the lower rotating gear plate 39 to rotate through the lower connecting gear plate 40, the lower rotating gear plate 39 drives the lower fixed shaft 36 to rotate through the connecting groove and the connecting plate, and drives the transverse screw 2 to rotate through the lower fixed shaft 36, so that the screw sleeve 3 drives the U-shaped plate 4 to move to the right, and drives the guide sleeve 5 on the guide rod 6 through the U-shaped plate 4. The surface slides to the right, and at the same time, the screw sleeve 3 and the guide sleeve 5 drive the limit frame 11 to move, so that the limit frame 11 drives the rotating sleeve 9 to slide on the surface of the rotating shaft 7, and at the same time, the limit frame 11 drives the internal threaded tube 15 to move to the right through the vertical screw 14, so that the internal threaded tube 15 drives the vacuum cover 16 to move to the right, so that the vacuum cover 16 moves to the butt weld of the longitudinal bulkhead corner that needs to be inspected, and the vacuum cover 16 will drive the spray pipe 25 to move to the right through the moving plate 24, and at the same time, the soap liquid is transported to the inside of the liquid inlet elbow 28 through the external delivery pump, and the soap liquid enters the connecting elbow 26 through the bellows 27, and enters the spray pipe 25 through the connecting elbow 26, and the soap liquid is sprayed on the butt weld of the longitudinal bulkhead corner through the spray pipe 25. The output end is shortened by the electric push rod 31, so that the push plate 1 37 and the push plate 2 38 simultaneously drive the lower rotating gear plate 39 and the upper rotating gear plate 41 to move to the right, so that the lower rotating gear plate 39 is separated from the lower connecting gear plate 40, and the upper rotating gear plate 41 is in contact with the upper connecting gear plate 42. At this time, the servo motor 30 drives the electric push rod 31 to drive the rotating shaft 32 to rotate, and drives the driven gear 34 to rotate through the rotating shaft 32, so that the driven gear 34 drives the limiting sleeve 35 to rotate, and the upper limiting sleeve 35 drives the upper connecting gear plate 42 to rotate, and drives the upper rotating gear plate 41 to rotate inside the push plate 2 38 through the upper connecting gear plate 42, so that the upper rotating gear plate 41 drives the upper fixed shaft 36 to rotate through the connecting groove and the connecting plate, and the upper The fixed shaft 36 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the rotating sleeve 9 to rotate inside the limiting frame 11 through the limiting convex strip 8 and the limiting groove 10, and drives the active bevel gear 12 to rotate through the rotating sleeve 9, and the active bevel gear 12 drives the driven bevel gear 13 meshed with it to rotate, and the vertical screw 14 is driven to rotate inside the limiting frame 11 through the driven bevel gear 13, so that the internal threaded tube 15 pushes the vacuum cover 16 to move toward the longitudinal bulkhead angle butt weld, so that the vacuum cover 16 drives the sealing gasket 21 to contact the longitudinal bulkhead angle, and the vacuum pump vacuumizes the inside of the vacuum cover 16 through the vacuum pipe 22. By observing whether the value of the pressure gauge 23 decreases, it is judged whether there is leakage in the longitudinal bulkhead angle butt weld. If there is leakage,The location of the air leakage in the longitudinal bulkhead corner butt weld can be determined by the location of the bubbles in the soap solution.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. 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 terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the pre-tightness of a longitudinal bulkhead corner butt weld, comprising a fixing plate (1) and a vacuum cover (16), characterized in that: A transverse screw (2) and a rotating shaft (7) are rotatably arranged inside the fixed plate (1), a threaded sleeve (3) is threadedly arranged on the surface of the transverse screw (2), a U-shaped plate (4) is fixedly arranged at the bottom end of the threaded sleeve (3), a guide sleeve (5) is fixedly arranged on the side of the U-shaped plate (4) away from the threaded sleeve (3), a guide rod (6) is slidably arranged inside the guide sleeve (5), and the guide rod (6) is fixedly installed between the opposite surfaces of the fixed plate (1), a lifting component is arranged on the surface of the rotating shaft (7), and the lifting component is used to drive the vacuum cover (16) to contact and separate from the longitudinal bulkhead corner, an auxiliary component is arranged on the top of the vacuum cover (16), and a spraying component is arranged on the right side of the vacuum cover (16), and the spraying component is used to spray soap liquid onto the weld of the longitudinal bulkhead corner, and a driving component is arranged on the right side of the fixed plate (1), and the driving component is used to drive the transverse screw (2) and the rotating shaft (7) to rotate.

2. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 1, characterized in that: The lifting assembly comprises a rotating sleeve (9) slidably arranged on the surface of the rotating shaft (7), a limiting groove (10) being provided inside the rotating sleeve (9), a limiting convex strip (8) being slidably arranged inside the limiting groove (10), the limiting convex strip (8) being fixedly mounted on the surface of the rotating shaft (7), a limiting frame (11) being rotatably arranged on the surface of the rotating sleeve (9), the limiting frame (11) being fixedly connected to the screw sleeve (3) and the guide sleeve (5), and the surface of the rotating sleeve (9) being fixedly arranged. A driving bevel gear (12) is provided, a driven bevel gear (13) is meshedly provided on the surface of the driving bevel gear (12), a vertical screw (14) is fixedly provided inside the driven bevel gear (13), the vertical screw (14) is rotatably provided inside the limiting frame (11), an internally threaded tube (15) is threadedly provided on the surface of the vertical screw (14), the internally threaded tube (15) is slidably provided inside the U-shaped plate (4), and the internally threaded tube (15) is fixedly mounted on the top of the vacuum cover (16).

3. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 1, characterized in that: The auxiliary component comprises a moving rod (17) fixedly mounted on the top of the vacuum cover (16); a mounting plate (18) is slidably mounted on the surface of the moving rod (17); the mounting plate (18) is fixedly mounted on the side of the vacuum cover (16); a mounting ring (19) is fixedly mounted on the top of the moving rod (17); and a spring (20) is connected between the bottom of the mounting ring (19) and the top of the mounting plate (18).

4. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 1, characterized in that: The spray assembly comprises a movable plate (24) fixedly mounted on the right side of the vacuum cover (16); a spray pipe (25) is fixedly arranged inside the movable plate (24); a connecting elbow (26) is fixedly arranged at the liquid inlet end of the spray pipe (25); a bellows (27) is fixedly arranged at the liquid inlet end of the connecting elbow (26); a liquid inlet elbow (28) is fixedly arranged at the liquid inlet end of the bellows (27); and the liquid inlet elbow (28) is fixedly mounted inside the fixed plate (1).

5. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 1, characterized in that: The driving assembly comprises a connecting frame (29) fixedly mounted on the right side of the fixing plate (1); a servo motor (30) and an electric push rod (31) are fixedly mounted on the right side of the connecting frame (29); a rotating shaft (32) is fixedly mounted on the output end of the servo motor (30); a driving gear (33) is fixedly mounted on the surface of the rotating shaft (32); two driven gears (34) are meshedly mounted on the surface of the driving gear (33); a limiting sleeve (35) is fixedly mounted inside the two driven gears (34); a fixed shaft (36) is rotatably mounted inside the two limiting sleeves (35); the two fixed shafts (36) are respectively fixedly mounted on the transverse screw rods. (2) and the front end of the rotating shaft (7), the output end of the electric push rod (31) is fixedly provided with a push plate 1 (37) and a push plate 2 (38), the push plate 2 (38) is fixedly provided with a lower rotating tooth plate (39) inside, the lower rotating tooth plate (39) is provided with a lower connecting tooth plate (40) on the left side inside, the lower connecting tooth plate (40) is fixedly installed on the right side of the fixed shaft (36) below, the push plate 2 (38) is fixedly provided with an upper rotating tooth plate (41), the upper connecting tooth plate (42) is provided on the right side of the upper rotating tooth plate (41), and the upper connecting tooth plate (42) is fixedly installed on the left side of the upper limiting sleeve (35).

6. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 5, characterized in that: The upper rotating tooth plate (41) and the lower rotating tooth plate (39) are both provided with connecting grooves, and the surfaces of the two fixed shafts (36) are both fixedly provided with connecting plates adapted to the connecting grooves, and the connecting plates are slidably connected to the connecting grooves.

7. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 1, characterized in that: The bottoms of the fixing plate (1) and the vacuum cover (16) are both triangular in shape, an electromagnet is fixed to the bottom of the fixing plate (1), and the vacuum cover (16) is made of a transparent material.

8. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 2, characterized in that: A limiting plate for limiting the position of the internally threaded tube (15) is provided on the surface thereof, and the limiting plate is slidably arranged inside the U-shaped plate (4).

9. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 1, characterized in that: A sealing pad (21) is fixedly arranged at the bottom of the vacuum cover (16), and the sealing pad (21) is made of elastic rubber. A vacuum tube (22) and a pressure gauge (23) are fixedly arranged at the rear side of the vacuum cover (16).

10. A longitudinal bulkhead corner butt weld pre-tightness detection device according to claim 5, characterized in that: The transverse cross section of the limiting sleeve (35) is an I-shaped structure, and the limiting sleeve (35) is made of metal material.

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