Welding equipment for underwater steel structure maintenance

Abstract

The invention discloses welding equipment for underwater steel structure maintenance, and relates to the technical field of steel structures. The device comprises a bottom plate, a mounting structure is fixedly connected to the upper end of the bottom plate, buffering structures are symmetrically and fixedly connected to an inner cavity of the mounting structure along the center line, clamping structures are arranged on the upper and lower side end faces between the two buffering structures, and positioning structures are arranged in the middles of the left and right side end faces of the inner cavity of the mounting structure; placing structures are fixedly connected to the middle between the fixing structures and the driving structure, lifting adjusting structures are fixedly connected to the sides, close to the fixing structures, of the ends, away from each other, of the two placing structures, and magnetic attraction structures are fixedly connected between the ends, away from the mounting structure, of the two fixing structures and the driving structure; and through a threaded sleeve, a limiting telescopic rod and a positioning clamping plate, a welded plate is accurately placed at a proper position and is attached to the steel structure body, the welding precision is further guaranteed, the quality of a welded joint is higher, and welding defects are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel structures, and in particular to welding equipment for underwater steel structure maintenance. Background Art

[0002] In the construction of water conservancy projects, it is sometimes necessary to install steel structures underwater. Steel structures are structures made of steel materials and are one of the main types of building structures. The structures are mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates, and adopt silanization, pure manganese phosphating, water washing and drying, galvanizing and other rust removal and rust prevention processes. Welding is usually used to connect the components or parts, and reinforcing welding plates are required during welding.

[0003] Due to the complex underwater environment, factors such as water flow may cause the plate to shake or make it difficult to locate it in a suitable position for welding. At the same time, due to the special underwater environment, it is difficult to ensure that the equipment fits tightly and is reliably fixed to the steel structure. During underwater welding, personnel are easily affected by buoyancy, water flow and undercurrent, causing personnel to shake and affecting welding efficiency. Undercurrent may also pose a threat to personnel, and there is a risk of leakage during welding, and leakage is not easy to be discovered in time, which poses a threat to personnel safety and the smooth progress of welding work.

[0004] Therefore, the existing underwater steel structure maintenance welding equipment cannot meet the needs in actual use, so there is an urgent need for improved technology on the market to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a welding device for underwater steel structure maintenance, which solves the problems raised in the above-mentioned background technology through its setting.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses a welding device for underwater steel structure maintenance, comprising a bottom plate, an upper end of the bottom plate is fixedly connected with a mounting structure, an inner cavity of the mounting structure is symmetrically fixedly connected with a buffer structure along a center line, upper and lower end surfaces between the two buffer structures are provided with a clamping structure, the middle of the left and right end surfaces of the inner cavity of the mounting structure are provided with a positioning structure, the middle of the upper and lower end surfaces of the bottom plate and the mounting structure are fixedly connected with a fixing structure, a driving structure is provided in the middle of the left and right end surfaces of the mounting structure, a placing structure is fixedly connected in the middle between the fixing structure and the driving structure, a lifting and lowering adjustment structure is fixedly connected to one side of the two placing structures away from each other and close to the fixing structure, a magnetic attraction structure is fixedly connected between the two fixing structures and one end of the driving structure away from the mounting structure, and the fixing structure comprises a connecting shaft respectively fixedly connected to the middle of the upper and lower end surfaces of the bottom plate and the top plate, the outer surface of the connecting shaft is symmetrically hinged with a fixing jaw, and the outer surface of the fixing jaw is fixedly connected with an inflatable airbag through a bracket.

[0007] Preferably, the mounting structure includes a mounting frame fixedly connected to the upper end surface of the base plate, the upper end surface of the mounting frame is fixedly connected to the top plate, the middle part of the front end surface of the mounting frame is fixedly connected to the mounting handle, and the upper part of the left end surface of the top plate is fixedly connected to the current detection alarm module, and the current detection alarm module specifically includes an audible and visual alarm and an underwater leakage detector.

[0008] Preferably, the buffer structure includes a sliding rod symmetrically fixedly connected to the upper and lower sides of the inner cavity of the mounting frame, the outer surface of the sliding rod is symmetrically slidably connected with a slider, the middle part of the outer surface of the sliding rod is movably sleeved with a spring, the spring is transmission connected between the two sliders, and a clamping structure is fixedly connected to the upper and lower sides between the two sliders respectively.

[0009] Preferably, the clamping structure comprises rotating frames respectively fixedly connected to upper and lower sides between the two opposite sliding blocks, a transmission rod is rotatably connected to the inner cavity of the rotating frame, and one end of the transmission rod away from the rotating frame is rotatably connected to the extrusion plate through the other rotating frame.

[0010] Preferably, the positioning structure includes threaded rods fixedly connected to the middle parts of the left and right sides of the inner cavity of the mounting frame, respectively, and threaded sleeves are threadedly connected to the outer surfaces of the threaded rods. The threaded rods at the left and right ends of the inner cavity of the mounting frame are fixedly connected to limited telescopic rods on both the upper and lower sides, and the end of the limited telescopic rod away from the mounting frame is fixedly connected to a positioning clamping plate, and the end of the threaded sleeve away from the threaded rod is rotatably connected to the positioning clamping plate.

[0011] Preferably, the driving structure includes a driving shaft fixedly connected to the middle of the left and right end surfaces of the mounting frame, a pushing rod is hinged on the outer surface of the driving shaft, another driving shaft is hinged on one end of the pushing rod away from the driving shaft, a driving clamp is hinged on one end of the other driving shaft away from the pushing rod, and a placement structure is fixedly connected in the middle between the fixed clamp and the driving clamp.

[0012] Preferably, the placement structure includes a placement plate fixedly connected in the middle between the fixed clamp and the driving clamp, a placement groove is opened in the middle of the outer surface of the placement plate, an adjustment roller is symmetrically connected to the inner cavity of the placement groove for rotation, and a lifting and lowering adjustment structure is fixedly connected to the end of the outer surface of the placement groove away from the driving clamp.

[0013] Preferably, the lifting and lowering adjustment structure includes an adjustment structure fixedly connected to the outer surface of the placement plate away from the driving clamp, and transmission tubes are symmetrically fixedly connected to the upper and lower end surfaces of two adjacent adjustment structures. The adjustment structure includes an adjustment frame fixedly connected to the outer surface of the placement plate close to the fixed clamp, and an installation groove is provided at the end of the adjustment frame away from the placement plate. A micro air pump is threadedly connected to the inner cavity of the installation groove, and the output end of the micro air pump is connected to the inflatable airbag through the transmission tube.

[0014] Preferably, the magnetic structure includes a connecting plate fixedly connected to the side of the fixed clamp away from the connecting axis, and the end of the driving clamp away from the mounting frame is fixedly connected to the connecting plate. Magnetic blocks are evenly fixedly connected on the left and right sides between the two connecting plates, and the magnetic properties of the two magnetic blocks are different.

[0015] The present invention has the following beneficial effects: 1. The present invention conveniently clamps and fixes the welding plate through the extrusion plate, the transmission rod, the slider, the sliding rod and the spring on its outer surface, thereby ensuring that the position of the plate is stable during the welding process, providing a stable foundation for subsequent welding operations, and avoiding the shaking of the plate to affect the welding quality. The welding equipment can be stably installed on the steel structure column through the push rod, the driving clamp, the driving shaft, the fixed clamp, and the placement structure, providing a stable support point for the welding operation in a complex underwater environment, ensuring that the welding work can be accurately carried out on the surface of the steel structure, and improving the accuracy and efficiency of welding. The welding plate can be accurately placed in a suitable position and fit with the steel structure body through the threaded sleeve, the limiting telescopic rod, and the positioning clamp, further ensuring the welding accuracy, making the welding joint quality higher, and reducing welding defects.

[0016] 2. The present invention prevents the shaking of personnel due to underwater buoyancy and water flow from affecting welding efficiency by installing handles and safety hooks, while resisting the threat of underwater undercurrents to personnel, ensuring the safety of personnel during underwater welding, and reducing welding errors caused by external interference. By installing the underwater leakage detector and the sound and light alarm in the current detection alarm module on the frame, personnel can be reminded to suspend work and check work equipment in time to prevent the risk of electric shock to personnel, thereby improving the safety of underwater welding work. By including a push rod, a magnetic suction block, a fixed clamp, a driving clamp, and a lifting and adjusting structure (including a micro air pump, a transmission tube, and an inflatable airbag), it is convenient for personnel to return to the surface from underwater after welding is completed, without the need for additional floating assist equipment, thereby improving the convenience and efficiency of the entire underwater welding work.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention from the left side; Figure 4 This is a schematic diagram of a horizontal half-section three-dimensional structure of the present invention; Figure 5 It is a schematic diagram of the installation structure of the positioning structure of the present invention; Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Bottom plate; 2. Mounting structure; 21. Mounting frame; 22. Top plate; 23. Mounting handle; 3. Buffer structure; 31. Sliding rod; 32. Sliding block; 4. Clamping structure; 41. Rotating frame; 42. Transmission rod; 43. Extrusion plate; 5. Positioning structure; 51. Threaded rod; 52. Threaded sleeve; 53. Limiting telescopic rod; 54. Positioning splint; 6. Fixing structure; 61. Connecting shaft; 62. Fixing jaw; 63. Inflatable airbag; 7. Driving structure; 71. Driving shaft; 72. Pushing rod; 73. Driving jaw; 8. Placing structure; 81. Placing plate; 82. Placing slot; 83. Adjusting roller; 9. Lifting and adjusting structure; 91. Adjusting structure; 911. Adjusting frame; 912. Mounting slot; 913. Micro air pump; 92. Transmission tube; 10. Magnetic structure; 101. Connecting plate; 102. Magnetic block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-Figure 6As shown, this embodiment is a welding device for underwater steel structure maintenance, including a bottom plate 1, a mounting structure 2 is fixedly connected to the upper end of the bottom plate 1, a buffer structure 3 is symmetrically fixedly connected to the inner cavity of the mounting structure 2 along the center line, a clamping structure 4 is arranged on the upper and lower end surfaces between the two buffer structures 3, a positioning structure 5 is arranged on the middle of the left and right end surfaces of the inner cavity of the mounting structure 2, a fixing structure 6 is fixedly connected to the middle of the upper and lower end surfaces of the bottom plate 1 and the mounting structure 2, a driving structure 7 is arranged in the middle of the left and right end surfaces of the mounting structure 2, a placement structure 8 is fixedly connected to the middle between the fixing structure 6 and the driving structure 7, and the ends of the two placement structures 8 that are far away from each other are close to the fixing structure One side of 6 is fixedly connected with a lifting and adjusting structure 9, and a magnetic attraction structure 10 is fixedly connected between the two fixed structures 6 and the end of the driving structure 7 away from the mounting structure 2. The fixed structure 6 includes a connecting shaft 61 fixedly connected to the middle of the upper and lower end surfaces of the bottom plate 1 and the top plate 22 respectively, and the outer surface of the connecting shaft 61 is symmetrically hinged with a fixed clamp 62, and the outer surface of the fixed clamp 62 is fixedly connected with an inflatable airbag 63 through a bracket. Through the fixed structure 6 on the bottom plate 1 and the mounting structure 2, 8 is installed and placed through the cooperation with the driving structure 7 during use, and then the inflatable airbag 63 drives the personnel to float upward under the action of the buoyancy of the water flow, so as to facilitate the recovery of the equipment.

[0023] Furthermore, the mounting structure 2 includes a mounting frame 21 fixedly connected to the upper end surface of the base plate 1, the upper end surface of the mounting frame 21 is fixedly connected to a top plate 22, a mounting handle 23 is fixedly connected to the middle of the front end surface of the mounting frame 21, and a current detection alarm module is fixedly connected to the upper left end surface of the top plate 22. The current detection alarm module specifically includes an audible and visual alarm and an underwater leakage detector. By installing the handle 23 and the safety hook, the shaking of personnel due to underwater buoyancy and water flow can be avoided to affect the welding efficiency, and the threat of underwater undercurrent to personnel can be resisted, thereby ensuring the safety of personnel during underwater welding and reducing welding errors caused by external interference. By using the underwater leakage detector and the audible and visual alarm in the current detection alarm module on the mounting frame 21, personnel can be reminded in time to suspend work and check the working equipment, thereby preventing the risk of electric shock to personnel and improving the safety of underwater welding work.

[0024] Furthermore, the buffer structure 3 includes a sliding rod 31 symmetrically fixedly connected to the upper and lower sides of the inner cavity of the mounting frame 21, and a slider 32 is symmetrically slidably connected to the outer surface of the sliding rod 31. A spring is movably sleeved in the middle of the outer surface of the sliding rod 31, and the spring is transmission-connected between the two sliders 32. The upper and lower sides between the two sliders 32 are respectively fixedly connected with a clamping structure 4. The clamping structure 4 is placed during use through the slider 32, the sliding rod 31 and the spring on its outer surface, and then the spacing between the extrusion plates 43 is adjusted through the expansion and contraction of the spring and the mutual movement of the slider 32.

[0025] Furthermore, the clamping structure 4 includes a rotating frame 41 fixedly connected to the upper and lower sides between the two relative sliders 32, and the inner cavity of the rotating frame 41 is rotatably connected to a transmission rod 42, and the end of the transmission rod 42 away from the rotating frame 41 is rotatably connected to an extrusion plate 43 through another rotating frame 41. The welding plate is conveniently clamped and fixed by the extrusion plate 43, the transmission rod 42, the slider 32, the sliding rod 31 and the spring on its outer surface, ensuring the stable position of the plate during the welding process, providing a stable foundation for subsequent welding operations, and preventing the plate from shaking and affecting the welding quality.

[0026] Furthermore, the positioning structure 5 includes threaded rods 51 respectively fixedly connected to the middle parts of the left and right sides of the inner cavity of the mounting frame 21, and threaded sleeves 52 are threadedly connected to the outer surfaces of the threaded rods 51. The threaded rods 51 at the left and right ends of the inner cavity of the mounting frame 21 are fixedly connected to the limiting telescopic rods 53 on the upper and lower sides. The end of the limiting telescopic rod 53 away from the mounting frame 21 is fixedly connected to the positioning clamping plate 54, and the end of the threaded sleeve 52 away from the threaded rod 51 is rotatably connected to the positioning clamping plate 54. Through the threaded sleeve 52, the limiting telescopic rod 53, and the positioning clamping plate 54, the welding plate is accurately placed in the appropriate position and fits against the steel structure body, thereby further ensuring the welding accuracy, making the welding joint quality higher, and reducing welding defects.

[0027] Furthermore, the driving structure 7 includes a driving shaft 71 fixedly connected to the middle of the left and right end surfaces of the mounting frame 21, a pushing rod 72 is hinged on the outer surface of the driving shaft 71, another driving shaft 71 is hinged on the end of the pushing rod 72 away from the driving shaft 71, a driving clamp 73 is hinged on the end of the other driving shaft 71 away from the pushing rod 72, and a placement structure 8 is fixedly connected in the middle between the fixed clamp 62 and the driving clamp 73. Through the pushing rod 72, the driving clamp 73, the driving shaft 71, the fixed clamp 62, and the placement structure 8, the welding equipment can be stably installed on the steel structure column, providing a stable support point for the welding operation in the complex underwater environment, ensuring that the welding work can be accurately carried out on the surface of the steel structure, and improving the accuracy and efficiency of welding.

[0028] Furthermore, the placement structure 8 includes a placement plate 81 fixedly connected in the middle between the fixed clamp 62 and the driving clamp 73, a placement groove 82 is opened in the middle of the outer surface of the placement plate 81, and an adjustment roller 83 is symmetrically connected to the inner cavity of the placement groove 82 for rotation, and a lifting and lowering adjustment structure 9 is fixedly connected to one end of the outer surface of the placement groove 82 away from the driving clamp 73. The lifting and lowering adjustment structure 9 is installed and placed during use through the placement structure 8 on the fixed structure 6 and the driving structure 7, and then the device can be moved up and down during use through the adjustment roller 83 in the inner cavity of the placement groove 82.

[0029] Furthermore, the lifting and adjusting structure 9 includes an adjusting structure 91 fixedly connected to the outer surface of the placing plate 81 away from the driving clamp 73, and the upper and lower end surfaces between the two adjacent adjusting structures 91 are symmetrically fixedly connected with a transmission tube 92. The adjusting structure 91 includes an adjusting frame 911 fixedly connected to the outer surface of the placing plate 81 near the fixed clamp 62, and the adjusting frame 911 is provided with a mounting groove 912 at the end away from the placing plate 81. The inner cavity of the mounting groove 912 is threadedly connected, and a micro air pump 913 is provided. The output end of the micro air pump 913 is interconnected with the inflatable airbag 63 through the transmission tube 92. By including the push rod 72, the magnetic suction block 102, the fixed clamp 62, the driving clamp 73, and the lifting and adjusting structure 9 (including the micro air pump 913, the transmission tube 92, and the inflatable airbag 63), it is convenient for personnel to return to the surface from underwater after welding is completed without the need for additional floating assist equipment, thereby improving the convenience and efficiency of the entire underwater welding work.

[0030] Furthermore, the magnetic structure 10 includes a connecting plate 101 fixedly connected to the side of the fixed clamp 62 away from the connecting shaft 61, and the end of the driving clamp 73 away from the mounting frame 21 is fixedly connected to the connecting plate 101, and magnetic blocks 102 are evenly fixedly connected on the left and right sides between the two connecting plates 101. The magnetic properties of the two magnetic blocks 102 are opposite. Through the magnetic structure 10 on the fixed structure 6 and the driving structure 7, when the fixed structure 6 and the driving structure 7 clamp the steel structure column in use, the device clamps stably to avoid accidental collisions that cause the device to fall off. At the same time, through the installed magnetic blocks 102, personnel can efficiently separate the fixed clamp 62 and the driving clamp 73 after use.

[0031] Working principle: When working, the extrusion plates 43 are pushed relative to each other, so that the transmission rod 42 rotates, so that the slider 32 slides relative to each other, and further the spring on the outer surface of the sliding rod 31 is extended. At this time, the personnel places the welding plate between the two extrusion plates 43, and then releases the extrusion plates 43, so that the spring on the outer surface of the sliding rod 31 contracts, so the sliders 32 approach each other, and then the transmission rod 42 rotates in the opposite direction, so the extrusion plates 43 on both sides approach each other, so as to clamp and fix the welding plate. When in use, personnel carry the device underwater and pull the push rod 72 relative to each other, so that the driving claws 73 on both sides move away from each other, thereby fitting the mounting frame 21 to the steel structure column, and then push the push rod 72 in the opposite direction, so that the push rod 72 and the driving claw 73 rotate in opposite directions with the driving shaft 71 as the center. Since the fixed claw 62 is fixedly connected to the driving claw 73 through the placement structure 8, the fixed claw 62 rotates at the same time, so that the fixed structure 6 and the driving structure 7 are sleeved on the outer surface of the steel structure. At this time, personnel rotate the threaded sleeves 52 on both sides of the inner cavity of the mounting frame 21 respectively, so that the limiting telescopic rod 53 is extended and retracted, and then the positioning clamps 54 on both sides move toward each other, so that the welding plate is placed in a suitable position and fits with the main body of the steel structure, so that it is convenient for personnel to weld the plate. When a person is welding, the safety hook is hung on the mounting handle 23 to prevent the person from shaking due to underwater buoyancy and water flow, thereby affecting the welding efficiency, and also to prevent the person from being threatened by underwater undercurrents. When welding, if leakage occurs, it is detected by the underwater leakage detector in the current detection alarm module on the mounting frame 21, and then the signal is transmitted to the sound and light alarm to remind the personnel, so that they stop working and check the working equipment.

[0032] When welding is completed, the push rod 72 is pulled to make the push rod 72 and the driving clamp 73 rotate in opposite directions with the driving shaft 71 as the center, so that the magnetic block 102 is no longer adsorbed, and the fixed clamp 62 and the driving clamp 73 are moved away from each other. At this time, the lifting and adjusting structure 9 is started to turn on the micro air pump 913, so that the gas is transmitted to the inflatable airbag 63 through the transmission tube 92. At this time, since the inflatable airbag 63 is made of elastic material, the inflatable airbag 63 expands. Since the gas density in the inner cavity of the inflatable airbag 63 is less than that of water, the device drives the personnel to float upward under the buoyancy of the water flow.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding device for underwater steel structure maintenance, comprising a bottom plate (1), characterized in that; The upper end of the bottom plate (1) is fixedly connected to a mounting structure (2), the inner cavity of the mounting structure (2) is symmetrically fixedly connected to a buffer structure (3) along the center line, the upper and lower end surfaces between the two buffer structures (3) are provided with a clamping structure (4), the middle of the left and right end surfaces of the inner cavity of the mounting structure (2) are provided with a positioning structure (5), the middle of the upper and lower end surfaces of the bottom plate (1) and the mounting structure (2) are fixedly connected to a fixing structure (6), the middle of the left and right end surfaces of the mounting structure (2) are provided with a driving structure (7), and the middle between the fixing structure (6) and the driving structure (7) is fixedly connected to a placing structure. The structure (8) comprises a lifting and lowering adjustment structure (9) fixedly connected to one side of the two placement structures (8) at one end away from each other and close to the fixed structure (6), a magnetic attraction structure (10) fixedly connected between the two fixed structures (6) and one end of the driving structure (7) away from the mounting structure (2), and the fixed structure (6) comprises a connecting shaft (61) fixedly connected to the middle of the upper and lower end surfaces of the bottom plate (1) and the top plate (22), respectively, a fixed clamping claw (62) symmetrically hinged on the outer surface of the connecting shaft (61), and an inflatable airbag (63) fixedly connected to the outer surface of the fixed clamping claw (62) via a bracket.

2. The underwater steel structure maintenance welding equipment according to claim 1, characterized in that: The mounting structure (2) comprises a mounting frame (21) fixedly connected to the upper end surface of the bottom plate (1); the upper end surface of the mounting frame (21) is fixedly connected to a top plate (22); a mounting handle (23) is fixedly connected to the middle of the front end surface of the mounting frame (21); and a current detection alarm module is fixedly connected to the upper left end surface of the top plate (22); the current detection alarm module specifically comprises an audible and visual alarm and an underwater leakage detector.

3. The underwater steel structure maintenance welding equipment according to claim 2, characterized in that: The buffer structure (3) comprises a sliding rod (31) symmetrically fixedly connected to the upper and lower sides of the inner cavity of the mounting frame (21); a sliding block (32) is symmetrically slidably connected to the outer surface of the sliding rod (31); a spring is movably sleeved in the middle of the outer surface of the sliding rod (31); the spring is transmission-connected between the two sliding blocks (32); and a clamping structure (4) is fixedly connected to the upper and lower sides of the two sliding blocks (32).

4. The underwater steel structure maintenance welding equipment according to claim 3, characterized in that: The clamping structure (4) comprises a rotating frame (41) respectively fixedly connected to the upper and lower sides between the two opposing sliding blocks (32); a transmission rod (42) is rotatably connected to the inner cavity of the rotating frame (41); and one end of the transmission rod (42) away from the rotating frame (41) is rotatably connected to a pressing plate (43) via the other rotating frame (41).

5. The underwater steel structure maintenance welding equipment according to claim 2, characterized in that: The positioning structure (5) comprises threaded rods (51) respectively fixedly connected to the middle of the left and right sides of the inner cavity of the mounting frame (21); the outer surface of the threaded rods (51) is threadedly connected to a threaded sleeve (52); the threaded rods (51) at the left and right ends of the inner cavity of the mounting frame (21) are fixedly connected to the upper and lower sides of the limited telescopic rods (53); one end of the limited telescopic rod (53) away from the mounting frame (21) is fixedly connected to a positioning clamping plate (54); and one end of the threaded sleeve (52) away from the threaded rod (51) is rotatably connected to the positioning clamping plate (54).

6. The underwater steel structure maintenance welding equipment according to claim 2, characterized in that: The driving structure (7) comprises a driving shaft (71) fixedly connected to the middle of the left and right end surfaces of the mounting frame (21); a pushing rod (72) is hingedly connected to the outer surface of the driving shaft (71); one end of the pushing rod (72) away from the driving shaft (71) is hingedly connected to another driving shaft (71); one end of the other driving shaft (71) away from the pushing rod (72) is hingedly connected to a driving clamp (73); and a placement structure (8) is fixedly connected in the middle between the fixed clamp (62) and the driving clamp (73).

7. The underwater steel structure maintenance welding equipment according to claim 1, characterized in that: The placement structure (8) comprises a placement plate (81) fixedly connected to the middle part between the fixed clamping jaw (62) and the driving clamping jaw (73); a placement groove (82) is provided in the middle part of the outer surface of the placement plate (81); an adjustment roller (83) is symmetrically rotatably connected to the inner cavity of the placement groove (82); and a lifting and lowering adjustment structure (9) is fixedly connected to one end of the outer surface of the placement groove (82) away from the driving clamping jaw (73).

8. The underwater steel structure maintenance welding equipment according to claim 7, characterized in that: The lifting and lowering adjustment structure (9) comprises an adjustment structure (91) fixedly connected to an end of the outer surface of the placement plate (81) away from the driving clamp (73), and a transmission tube (92) is symmetrically fixedly connected to the upper and lower end surfaces between two adjacent adjustment structures (91). The adjustment structure (91) comprises an adjustment frame (911) fixedly connected to the outer surface of the placement plate (81) near the fixed clamp (62), and an installation groove (912) is provided at one end of the adjustment frame (911) away from the placement plate (81). The inner cavity of the installation groove (912) is threadedly connected to a micro air pump (913), and the output end of the micro air pump (913) is connected to the inflatable air bag (63) through the transmission tube (92).

9. The underwater steel structure maintenance welding equipment according to claim 1, characterized in that: The magnetic attraction structure (10) comprises a connecting plate (101) fixedly connected to a side of the fixed clamping jaw (62) away from the connecting shaft (61); an end of the driving clamping jaw (73) away from the mounting frame (21) is fixedly connected to the connecting plate (101); and magnetic attraction blocks (102) are evenly fixedly connected on the left and right sides between the two connecting plates (101), and the magnetism of the two magnetic attraction blocks (102) is opposite to each other.

Images