Steel structure connecting piece for self-elevating ocean workover operation platform

Abstract

The invention relates to the technical field of self-elevating ocean workover operation platforms, and discloses a steel structure connecting piece for a self-elevating ocean workover operation platform, which comprises a workover platform cross beam plate, and workover platform vertical beam plates are arranged at the two ends of the workover platform cross beam plate; the sides, close to the workover platform cross beam plates, of the workover platform vertical beam plates are fixedly connected with workover platform connecting steel plates, connecting holes are formed in the outer surfaces of the workover platform connecting steel plates, bolts are arranged in the connecting holes, and nuts are arranged at one ends of the bolts; and one end of the hollow cylinder is rotationally connected to the side, away from the workover platform cross beam plate, of the workover platform connecting steel plate. The steel structure building connecting piece can effectively solve the problems that in the prior art, the number of bolts is large, after a worker uses a wrench to tighten a single bolt, the next bolt can be tightened, the tightening frequency is large, work is tedious, the bolt tightening efficiency is low, and therefore the construction efficiency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of self-elevating marine well repairing operation platforms, and in particular to a steel structure connector for a self-elevating marine well repairing operation platform. Background Art

[0002] Steel structure building connectors are key components used to connect various components in steel structures (such as steel beams, steel columns, etc.) to ensure the integrity and stability of the structure. During the construction process, the appropriate steel plate thickness and width are usually selected according to the size and load-bearing requirements of the beam and slab. The well repair platform connecting steel plate is cut and drilled, and the well repair platform connecting steel plate is placed at the beam and slab connection position to ensure that the steel plate fits tightly with the beam and slab surface. Bolts are used to pass through the steel plate and beam and rotate the nuts to form multiple beams and slabs into an integral structure to jointly bear the load, thereby improving the stability of the building structure.

[0003] A self-elevating offshore well-servicing platform is a movable offshore platform. The main body of the platform is usually a steel structure, providing operating space for operators and equipment. During the reinforcement process of the platform, high-strength bolts are used to connect the beam plate and the steel plate through pre-tightening force, and the prefabricated steel plate and the beam plate are spliced together. This can achieve splicing and reinforcement of the beam plate and the steel plate connecting the well-servicing platform under harsh sea conditions.

[0004] At present, in the process of splicing and reinforcing the beam plate and the connecting steel plate of the well workover platform, multiple bolts are usually symmetrically distributed along the edge of the connecting steel plate of the well workover platform. The symmetrically distributed bolts make the stress on each part of the steel plate uniform, avoiding local stress concentration on the connecting steel plate of the well workover platform. However, due to the large number of bolts, workers need to use a wrench to tighten a single bolt before tightening the next bolt. The tightening times are many, the work is tedious, and the tightening efficiency of the bolts is low, thereby reducing construction efficiency. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a steel structure connector for a self-elevating offshore well repairing platform, which can effectively solve the problems in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a steel structure connector for a self-elevating offshore well repairing platform, comprising: A workover platform cross beam plate, wherein both ends of the workover platform cross beam plate are provided with a workover platform vertical beam plate, and the workover platform vertical beam plate is fixedly connected to a workover platform connecting steel plate on one side close to the workover platform cross beam plate, and the outer surface of the workover platform connecting steel plate is provided with a connecting hole, and a bolt is provided inside the connecting hole, and a nut is provided at one end of the bolt; A hollow cylinder, one end of which is rotatably connected to a side of a well repair platform connecting steel plate away from a cross beam plate of the well repair platform, a number one gear being slidably connected to a circumferential outer surface of the hollow cylinder, an inner octagonal cylinder being rotatably connected to a side of the well repair platform connecting steel plate away from a cross beam plate of the well repair platform, an octagonal slider being slidably connected to an inner wall of the inner octagonal cylinder, and the nut being fixedly connected to the inner wall of the octagonal slider; Among them, there are eight inner octagonal tubes and they are symmetrically distributed on the outer surface of the steel plate connecting the well repair platform. The circumferential outer surfaces of the four inner octagonal tubes on the upper and lower sides are fixedly connected with the rear gear, and the circumferential outer surfaces of the four inner octagonal tubes in the middle are fixedly connected with the front gear, and the No. 1 gear is externally meshed with the front gear.

[0007] Furthermore, a sliding hole is provided on the circumferential outer surface of the hollow cylinder, and four sliding holes are provided and distributed in a circular array on the circumferential outer surface of the hollow cylinder. A sliding block is fixedly connected to the inner wall of the No. 1 gear, and four sliding blocks are provided and distributed in a circular array on the inner wall of the No. 1 gear. The No. 1 gear is slidably connected to the sliding hole through the sliding block.

[0008] Furthermore, the hollow cylinder is fixedly connected to an inner gear ring at one end close to the well repair platform connecting steel plate, and the hollow cylinder is rotatably connected to the well repair platform connecting steel plate through the inner gear ring, and the side of the well repair platform connecting steel plate away from the well repair platform cross beam plate is rotatably connected to the second gear, the third gear and the fourth gear respectively, the axis of the fourth gear is collinear with the axis of the hollow cylinder, the second gear is internally meshed with the inner gear ring, the second gear is externally meshed with the third gear, and the third gear is externally meshed with the fourth gear.

[0009] Furthermore, the side of the fourth gear away from the well repair platform connection steel plate is fixedly connected to the central shaft, the circumferential outer surface of the central shaft is fixedly connected to two ring frames, and the circumferential outer surfaces of the two ring frames are commonly fixedly connected to an adjustment cylinder.

[0010] Furthermore, the outer circumferential surface of the adjusting cylinder is respectively provided with a front flat rail, a spiral rail and a rear flat rail, one end of the spiral rail is fixedly connected to the front flat rail, and the other end of the spiral rail is fixedly connected to the rear flat rail.

[0011] Furthermore, the two sliding blocks located in the middle are both rotatably connected to one another on one side thereof, and the two adjusting wheels are both slidably connected to the inside of the front flat rail; Wherein, when the adjusting wheel is in sliding connection with the front flat rail, the No. 1 gear is meshed and connected with the front gear; when the adjusting wheel is in sliding connection with the rear flat rail, the No. 1 gear is meshed and connected with the rear gear.

[0012] Furthermore, one end of the hollow cylinder away from the well repair platform connection steel plate is fixedly connected to a hexagonal driving block.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The working environment of the self-elevating marine well repair operation platform is harsh, and the steel plate connection is easily corroded by seawater, rusted and fractured. The present invention can be completed by rotating two hexagonal drive blocks on the front side of the well repair platform connecting steel plates with the help of a socket wrench: first tighten the four bolts in the middle, and then tighten the four bolts on the upper and lower sides. The tightening order of the bolts is from the center of the bolt group to the periphery, which can make the pre-tightening force of the bolts evenly spread from the center to the periphery. This uniform diffusion method can ensure that the pre-tightening force borne by each bolt is relatively balanced, ensure the sealing and reliability of the connection, reduce the degree of erosion of the steel plate connection by seawater, and extend the service life of each connecting part.

[0014] 2. Tightening the bolts from the center to the periphery can gradually disperse the stress, making the stress more evenly distributed throughout the entire connection area. A single tightening operation with a socket wrench can complete the tightening of multiple bolts, thereby reducing the overall number of bolt tightening times. The bolt tightening work is simple and convenient, improving the bolt tightening efficiency, thereby improving the construction efficiency of the self-elevating marine well repair operation platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0016] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a crossbeam plate of a well repair platform according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a hexagonal drive block according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of a well repair platform connecting steel plates according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of an empty cylinder in an embodiment of the present invention; Figure 6 This is a structural diagram of a sliding block according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a ring frame according to an embodiment of the present invention; Figure 8This is a front view structural diagram of the fourth gear according to an embodiment of the present invention; Figure 9 This is a schematic structural diagram of a front flat rail according to an embodiment of the present invention; Figure 10 This is a schematic structural diagram of the front gear according to an embodiment of the present invention; Figure 11 Schematic diagram of the structure of the octagonal slider according to an embodiment of the present invention.

[0017] The numbers in the figure represent: 1. Well repair platform cross beam plate; 11. Well repair platform vertical beam plate; 12. Well repair platform connecting steel plate; 121. Connecting hole; 13. Bolt; 14. Nut; 2. Hollow cylinder; 21. Hexagonal drive block; 22. Gear No. 1; 23. Inner octagonal cylinder; 24. Octagonal slider; 25. Front gear; 26. Rear gear; 3. Sliding block; 31. Sliding hole; 4. Inner ring gear; 41. Gear No. 2; 42. Gear No. 3; 43. Gear No. 4; 44. Center shaft; 45. Ring frame; 46. Adjusting cylinder; 461. Front flat rail; 462. Spiral rail; 463. Rear flat rail; 5. Adjusting wheel. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to the embodiments.

[0020] Example: See Figures 1-11 The present invention provides a technical solution: a steel structure connector for a self-elevating offshore well repair operation platform, comprising: A workover platform cross beam plate 1, with workover platform vertical beam plates 11 provided at both ends of the workover platform cross beam plate 1. The workover platform vertical beam plates 11 are fixedly connected to a workover platform connecting steel plate 12 on one side close to the workover platform cross beam plate 1. The outer surface of the workover platform connecting steel plate 12 is provided with a connecting hole 121. A bolt 13 is provided inside the connecting hole 121. A nut 14 is provided at one end of the bolt 13. A hollow cylinder 2, one end of which is rotatably connected to the side of the workover platform connecting steel plate 12 away from the workover platform crossbeam plate 1, a number one gear 22 is slidably connected to the circumferential outer surface of the hollow cylinder 2, an inner octagonal cylinder 23 is rotatably connected to the side of the workover platform connecting steel plate 12 away from the workover platform crossbeam plate 1, an inner wall of the inner octagonal cylinder 23 is slidably connected to an octagonal slider 24, and a nut 14 is fixedly connected to the inner wall of the octagonal slider 24; Among them, there are eight inner octagonal tubes 23 and they are symmetrically distributed on the outer surface of the well repair platform connecting steel plate 12. The circumferential outer surfaces of the four inner octagonal tubes 23 located on the upper and lower sides are fixedly connected with the rear gear 26, and the circumferential outer surfaces of the four inner octagonal tubes 23 located in the middle are fixedly connected with the front gear 25, and the number one gear 22 is externally meshed with the front gear 25.

[0021] A sliding hole 31 is provided on the circumferential outer surface of the hollow cylinder 2. There are four sliding holes 31 distributed in a circular array on the circumferential outer surface of the hollow cylinder 2. A sliding block 3 is fixedly connected to the inner wall of the number one gear 22. There are four sliding blocks 3 distributed in a circular array on the inner wall of the number one gear 22. The number one gear 22 is slidably connected to the sliding hole 31 through the sliding block 3.

[0022] One end of the hollow cylinder 2 close to the well repair platform connecting steel plate 12 is fixedly connected to the inner gear ring 4, and the hollow cylinder 2 is rotatably connected to the well repair platform connecting steel plate 12 through the inner gear ring 4. The side of the well repair platform connecting steel plate 12 away from the well repair platform cross beam plate 1 is rotatably connected to the second gear 41, the third gear 42 and the fourth gear 43. The axis of the fourth gear 43 is collinear with the axis of the hollow cylinder 2. The second gear 41 is internally meshed with the inner gear ring 4, the second gear 41 is externally meshed with the third gear 42, and the third gear 42 is externally meshed with the fourth gear 43.

[0023] A center shaft 44 is fixedly connected to the side of the fourth gear 43 away from the workover platform connecting steel plate 12 . Two ring frames 45 are fixedly connected to the circumferential outer surface of the center shaft 44 . An adjustment cylinder 46 is fixedly connected to the circumferential outer surface of the two ring frames 45 .

[0024] A front flat rail 461 , a spiral rail 462 and a rear flat rail 463 are respectively formed on the circumferential outer surface of the adjustment cylinder 46 . One end of the spiral rail 462 is fixedly connected to the front flat rail 461 , and the other end of the spiral rail 462 is fixedly connected to the rear flat rail 463 .

[0025] The two sliding blocks 3 located in the middle are both rotatably connected to the adjacent sides thereof with an adjusting wheel 5, and both adjusting wheels 5 are slidably connected to the interior of the front flat rail 461; In the process of sliding connection between the adjusting wheel 5 and the front flat rail 461 , the first gear 22 is meshed with the front gear 25 , and in the process of sliding connection between the adjusting wheel 5 and the rear flat rail 463 , the first gear 22 is meshed with the rear gear 26 .

[0026] One end of the hollow cylinder 2 away from the well repair platform connection steel plate 12 is fixedly connected to a hexagonal driving block 21 .

[0027] Working principle: The connection process of the well repair platform connecting steel plate 12 and the well repair platform vertical beam plate 11: In actual application, the workover platform connecting steel plate 12 is welded to one side of the workover platform vertical beam plate 11 by using welding equipment. The welding equipment is welded along the inner side fillet weld of the workover platform connecting steel plate 12 and the workover platform vertical beam plate 11, and a segmented back-welding method (each segment is 300 mm to 500 mm long) is adopted to reduce single-side thermal deformation. After the inner side is welded, the position of the workover platform connecting steel plate 12 and the workover platform vertical beam plate 11 is adjusted. The welding equipment is welded along the outer side fillet weld of the workover platform connecting steel plate 12 and the workover platform vertical beam plate 11. The welds on both sides need to be welded symmetrically (for example, two layers are welded on the inner side and two layers are welded on the outer side). Symmetrical force is achieved by welding on both sides to reduce stress concentration.

[0028] Pre-connection process of the workover platform connecting steel plate 12 and the workover platform crossbeam plate 1: In actual application, by inserting the bolts 13 into the connecting holes 121 from the side of the well servicing platform cross beam plate 1 away from the well servicing platform connecting steel plate 12, eight bolts 13 are sequentially passed through the corresponding holes on the well servicing platform cross beam plate 1 and the well servicing platform connecting steel plate 12 to ensure that the bolts 13 pass through vertically without any skew.

[0029] The connection process of the well repair platform connecting steel plate 12 and the well repair platform crossbeam plate 1: In practical application, by using a socket wrench to cover the outer surface of the two hexagonal drive blocks 21, by starting the socket wrench, such as Figure 10 As shown, the socket wrench drives the two hexagonal drive blocks 21 to rotate counterclockwise, and the two hexagonal drive blocks 21 drive the two hollow cylinders 2 to rotate counterclockwise around their own axes. The two hollow cylinders 2 respectively drive the inner gear ring 4 at one end thereof to rotate counterclockwise on the outer surface of the well repair platform connecting steel plate 12, as shown in FIG. Figure 8 As shown, under the internal meshing connection between the inner ring gear 4 and the second gear 41, the rotating inner ring gear 4 drives the three second gears 41 to rotate counterclockwise on the outer surface of the well workover platform connecting steel plate 12. Under the external meshing connection between the second gear 41 and the third gear 42, the three counterclockwise rotating second gears 41 drive the three third gears 42 to rotate clockwise on the outer surface of the well workover platform connecting steel plate 12. Under the external meshing connection between the third gear 42 and the fourth gear 43, the three clockwise rotating third gears 42 drive one fourth gear 43 to rotate counterclockwise on the outer surface of the well workover platform connecting steel plate 12. The fourth gear 43 drives the central shaft 44 at its center to rotate counterclockwise around its own axis. The central shaft 44 drives the two ring frames 45 on its circumferential outer surface to rotate counterclockwise around its own axis. The two ring frames 45 drive the adjusting cylinder 46 on its circumferential outer surface to rotate counterclockwise around its own axis.

[0030] As a further embodiment of the present invention, since the number of teeth of the inner gear ring 4 is greater than the number of teeth of the fourth gear 43, the rotation speed of the inner gear ring 4 is lower than the rotation speed of the fourth gear 43. Therefore, with the inner gear ring 4 as a reference, the fourth gear 43 rotates counterclockwise relative to the inner gear ring 4. Similarly, the adjustment cylinder 46 rotates counterclockwise relative to the hollow cylinder 2. Figure 9 As shown, at the beginning, the adjusting wheel 5 slides along the front flat rail 461 and approaches the spiral rail 462 , then, the adjusting wheel 5 slides along the spiral rail 462 and approaches the rear flat rail 463 , and then, the adjusting wheel 5 slides along the rear flat rail 463 .

[0031] As a further embodiment of the present invention, when the hollow cylinder 2 rotates counterclockwise on one side of the well repair platform connected to the steel plate 12, at the beginning, the hollow cylinder 2 drives the four sliding blocks 3 to rotate counterclockwise around the axis of the hollow cylinder 2 through the four sliding holes 31 on its circumferential outer surface, and the four sliding blocks 3 drive the No. 1 gear 22 to rotate counterclockwise around the axis of the hollow cylinder 2, and under the sliding connection between the adjusting wheel 5 and the front flat rail 461, the four sliding blocks 3 and the No. 1 gear 22 are limited (the No. 1 gear 22 and the sliding blocks 3 will not slide along the sliding holes 31), so that The number one gear 22 is always located at the front half of the outer surface of the circumference of the hollow cylinder 2, and the number one gear 22 is always in external meshing connection with the two front gears 25. Under the external meshing connection between the number one gear 22 and the front gear 25, the counterclockwise rotation of the number one gear 22 drives the two front gears 25 to rotate clockwise around the axis of the inner octagonal cylinder 23. The clockwise rotation of the front gear 25 drives the four inner octagonal cylinders 23 located in the middle to rotate clockwise around their own axes. The four inner octagonal cylinders 23 located in the middle drive the octagonal slider 24 inside thereof to rotate clockwise around the axis of the bolt 13. Figure 11 As shown, the four octagonal sliders 24 located in the middle respectively drive the nuts 14 inside thereof to rotate clockwise around the axis of the bolts 13, thereby tightening the four bolts 13 located in the middle.

[0032] As a further embodiment of the present invention, as the hollow cylinder 2 rotates counterclockwise, the adjusting wheel 5 slides along the spiral rail 462 and approaches the rear flat rail 463. Under the limiting action of the sliding hole 31 and the sliding block 3, the adjusting cylinder 46 pushes the sliding block 3 and the No. 1 gear 22 along the sliding hole 31 toward the well repair platform connecting steel plate 12 through the two adjusting wheels 5. The distance between the side of the No. 1 gear 22 close to the rear gear 26 and the side of the rear gear 26 close to the No. 1 gear 22 gradually becomes smaller. When the No. 1 gear 22 is close to the rear gear 26, the distance between the No. 1 gear 22 and the rear gear 26 is close to the No. 1 gear 22 is gradually smaller. When the distance between one side and the side of the rear gear 26 close to the number one gear 22 is zero, the teeth of the number one gear 22 and the teeth of the rear gear 26 are just in a staggered state (that is, the rear gear 26 will not prevent the number one gear 22 from continuing to move along the sliding hole 31 toward the well repair platform connecting steel plate 12), and the adjusting cylinder 46 continues to push the number one gear 22 to move along the sliding hole 31 toward the well repair platform connecting steel plate 12 until the two adjusting wheels 5 are slidably connected with the rear flat rail 463. At this time, the number one gear 22 is fully meshed with the two rear gears 26.

[0033] As a further embodiment of the present invention, as the hollow cylinder 2 rotates counterclockwise, the four sliding blocks 3 on the outer surface of the hollow cylinder 2 drive the four sliding blocks 3 to rotate counterclockwise around the axis of the hollow cylinder 2 through the four sliding holes 31 on the outer surface of the hollow cylinder 2, and the four sliding blocks 3 drive the No. 1 gear 22 to rotate counterclockwise around the axis of the hollow cylinder 2, and under the sliding connection between the adjusting wheel 5 and the rear flat rail 463, the four sliding blocks 3 and the No. 1 gear 22 are limited (the No. 1 gear 22 and the sliding blocks 3 will not slide along the sliding holes 31), so that the No. 1 gear 22 is always in the center. In the rear half of the outer circumference of the hollow cylinder 2, the No. 1 gear 22 always maintains an external meshing connection with the two rear gears 26. Under the external meshing connection between the No. 1 gear 22 and the rear gear 26, the counterclockwise rotation of the No. 1 gear 22 drives the two rear gears 26 to rotate clockwise around the axis of the inner octagonal cylinder 23. The clockwise rotation of the rear gear 26 drives the four inner octagonal cylinders 23 located on the upper and lower sides to rotate clockwise around their own axes. The four inner octagonal cylinders 23 located on the upper and lower sides drive the octagonal sliders 24 inside them to rotate clockwise around the axis of the bolt 13. Figure 11 As shown, the four octagonal sliders 24 located on the upper and lower sides respectively drive the nuts 14 inside thereof to rotate clockwise around the axis of the bolts 13, thereby tightening the four bolts 13 located on the upper and lower sides.

[0034] The present invention can be completed by rotating the two hexagonal driving blocks 21 on the front side of the well repair platform connecting steel plate 12 with the help of a socket wrench: first tighten the four bolts 13 in the middle, and then tighten the four bolts 13 on the upper and lower sides. The tightening order of the bolts 13 is from the center of the bolt 13 group to the periphery, which can make the pre-tightening force of the bolts 13 evenly diffuse from the center to the periphery. This uniform diffusion method can ensure that the pre-tightening force borne by each bolt 13 is relatively balanced, thereby ensuring the sealing and reliability of the connection. Secondly, tightening the bolts 13 from the center to the periphery can gradually disperse the stress, so that the stress is more evenly distributed in the entire connection area. The tightening work of multiple bolts 13 can be completed by a single tightening operation of the socket wrench, thereby reducing the total tightening times of the bolts 13. The tightening work of the bolts 13 is simple and convenient, and the tightening efficiency of the bolts 13 is improved, thereby improving the construction efficiency of the self-elevating marine well repair operation platform.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Steel structure connector for self-elevating offshore well repair operation platform, characterized in that: include: A well repair platform cross beam plate (1), wherein both ends of the well repair platform cross beam plate (1) are provided with a well repair platform vertical beam plate (11), and the well repair platform vertical beam plate (11) is fixedly connected to a well repair platform connecting steel plate (12) on one side close to the well repair platform cross beam plate (1), and a connecting hole (121) is provided on the outer surface of the well repair platform connecting steel plate (12), a bolt (13) is provided inside the connecting hole (121), and a nut (14) is provided at one end of the bolt (13); A hollow cylinder (2), one end of the hollow cylinder (2) is rotatably connected to a side of a well repair platform connecting steel plate (12) away from the well repair platform cross beam plate (1), a circumferential outer surface of the hollow cylinder (2) is slidably connected to a No. 1 gear (22), a side of the well repair platform connecting steel plate (12) away from the well repair platform cross beam plate (1) is rotatably connected to an inner octagonal cylinder (23), an inner wall of the inner octagonal cylinder (23) is slidably connected to an octagonal slider (24), and the nut (14) is fixedly connected to the inner wall of the octagonal slider (24); There are eight inner octagonal tubes (23) symmetrically distributed on the outer surface of the well repair platform connecting steel plate (12), the circumferential outer surfaces of the four inner octagonal tubes (23) located on the upper and lower sides are fixedly connected to the rear gear (26), the circumferential outer surfaces of the four inner octagonal tubes (23) located in the middle are fixedly connected to the front gear (25), and the number one gear (22) is externally meshed with the front gear (25).

2. The steel structure connector for a self-elevating offshore well repair platform according to claim 1, characterized in that: The circumferential outer surface of the hollow cylinder (2) is provided with a sliding hole (31), and the sliding holes (31) are provided in four numbers and distributed in a circumferential array on the circumferential outer surface of the hollow cylinder (2). The inner wall of the number one gear (22) is fixedly connected with a sliding block (3), and the sliding block (3) is provided in four numbers and distributed in a circumferential array on the inner wall of the number one gear (22). The number one gear (22) is slidably connected to the sliding hole (31) through the sliding block (3).

3. The steel structure connector for a self-elevating offshore well repair platform according to claim 2, characterized in that: The hollow cylinder (2) is fixedly connected to an inner gear ring (4) at one end close to the well repair platform connecting steel plate (12), and the hollow cylinder (2) is rotatably connected to the well repair platform connecting steel plate (12) through the inner gear ring (4). The side of the well repair platform connecting steel plate (12) away from the well repair platform cross beam plate (1) is rotatably connected to a second gear (41), a third gear (42) and a fourth gear (43), respectively. The axis of the fourth gear (43) is collinear with the axis of the hollow cylinder (2), the second gear (41) is internally meshed with the inner gear ring (4), the second gear (41) is externally meshed with the third gear (42), and the third gear (42) is externally meshed with the fourth gear (43).

4. The steel structure connector for a self-elevating offshore well repair platform according to claim 3, characterized in that: The fourth gear (43) is fixedly connected to a central shaft (44) on a side away from the well repair platform connecting steel plate (12), the circumferential outer surface of the central shaft (44) is fixedly connected to two ring frames (45), and the circumferential outer surfaces of the two ring frames (45) are fixedly connected to an adjustment cylinder (46).

5. The steel structure connector for a self-elevating offshore well repair platform according to claim 4, characterized in that: The outer circumferential surface of the regulating cylinder (46) is respectively provided with a front flat rail (461), a spiral rail (462) and a rear flat rail (463); one end of the spiral rail (462) is fixedly connected to the front flat rail (461), and the other end of the spiral rail (462) is fixedly connected to the rear flat rail (463).

6. The steel structure connector for a self-elevating offshore well repair platform according to claim 5, characterized in that: The two sliding blocks (3) located in the middle are both rotatably connected to the adjacent sides thereof with an adjusting wheel (5), and the two adjusting wheels (5) are both slidably connected to the interior of the front flat rail (461); In the process of sliding connection between the regulating wheel (5) and the front flat rail (461), the first gear (22) is meshed with the front gear (25), and in the process of sliding connection between the regulating wheel (5) and the rear flat rail (463), the first gear (22) is meshed with the rear gear (26).

7. The steel structure connector for a self-elevating offshore well repair platform according to claim 6, characterized in that: One end of the hollow cylinder (2) away from the well repair platform connecting steel plate (12) is fixedly connected to a hexagonal driving block (21).

Images