Supporting frame suitable for floating support folding of semi-submersible platform

Abstract

The invention relates to the technical field of supporting frames, in particular to a supporting frame suitable for semi-submerged platform floating support folding, the supporting frame is slidably arranged at the top of a floating support construction barge, a plurality of buffering parts are arranged at the top of the supporting frame, and each buffering part comprises a pressing elastic part, a plurality of oil cylinder parts and a buffering plate. The buffer plate is fixedly arranged at the top of the supporting frame, the elastic pressing part is rotationally arranged in the middle of the upper portion of the buffer plate, the oil cylinder part is fixedly arranged on the outer ring of the lower surface of the elastic pressing part in the circumferential direction, and the bottom face of the oil cylinder part is fixedly connected with the upper surface of the buffer plate; the pressing column converts the gravity of the upper module into kinetic energy, and the pressure of the upper module on the supporting frame is reduced; the first ribs and the second ribs rub with each other, so that the impact force of the upper module on the supporting frame is reduced; when the inner cylinder body moves downwards, the resistance of hydraulic oil in the outer cylinder cavity needs to be overcome, the speed of pressing the upper module to the supporting frame is reduced, the impact force of the upper module to the supporting frame is further reduced, and the supporting frame is prevented from being crashed by the upper module.

Description

Technical Field

[0001] The invention relates to the technical field of support frames, and in particular to a support frame suitable for floating and folding a semi-submersible platform. Background Art

[0002] A semi-submersible production platform is an offshore oil and gas extraction facility that combines the functions of a semi-submersible drilling platform and a production and processing system. This type of platform is usually used in deep sea areas and has good stability and wind and wave resistance, and can operate safely in harsh marine environments. A semi-submersible production platform consists of the following systems: a floating structure, a production and processing system, a storage system, an external transmission system, a power system, a living area, and a safety system. The floating structure includes an upper platform and a lower buoy, and the buoy is partially immersed in water to provide buoyancy and support; the production and processing system includes an oil and gas separator, a water treatment device, a chemical injection system, etc., which are used to process crude oil and natural gas extracted from the seabed; the storage system is equipped with oil tanks or gas tanks for temporary storage of processed oil or natural gas; the external transmission system transports the processed oil and natural gas to land or other receiving facilities through pipelines or tankers; the power system provides power support for the platform, including generator sets and power distribution systems; the living area provides accommodation, catering, entertainment and other living facilities for the staff; the safety system includes fire protection, lifesaving, explosion-proof and other safety facilities to ensure the safety of personnel and facilities. Semi-submersible production platforms are widely used in the development of deep-sea oil fields, especially in those waters with large water depths, complex environments, and where traditional fixed platforms are difficult to construct. With the advancement of marine resource development technology, the design and construction of semi-submersible production platforms are also being optimized to meet more demanding work requirements.

[0003] The main structure of the semi-submersible production platform consists of a lower floating structure (referred to as the hull) and an upper functional module structure (referred to as the upper module). During the construction of the semi-submersible production platform, the upper module needs to be installed on the hull column and the connection between the upper module and the hull column needs to be completed. The upper module of the traditional semi-submersible production platform is connected to the hull frame only by rigid columns, and there is no reliable elastic component to absorb the impact of the upper module on the hull frame, which is easy to cause damage to the hull frame. Summary of the invention

[0004] The main purpose of the present invention is to provide a support frame suitable for floating and closing a semi-submersible platform, so as to solve the problem in the related art that there is no reliable elastic component to absorb the impact force of the upper module on the hull frame.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, there is provided a support frame suitable for floating and folding of a semi-submersible platform, comprising an upper module, the upper module providing support for ship loading, towing and floating operations, and also comprising: a platform hull portion, the platform hull portion providing space and support for a construction barge portion;

[0006] a construction barge section, the construction barge section providing support for the support frame;

[0007] A support frame, wherein the support frame is slidably arranged on the top of the floating construction barge, and a plurality of buffer parts are arranged on the top of the support frame, and the buffer parts include a pressure spring part, a plurality of cylinder parts and a buffer plate, and the buffer plate is fixedly arranged on the top of the support frame, and the pressure spring part is rotatably arranged in the middle part above the buffer plate, and the cylinder part is fixedly arranged on the outer ring of the lower surface of the pressure spring part along the circumferential direction, and the bottom surface of the cylinder part is fixedly connected to the upper surface of the buffer plate. When the upper module is placed on the top of the support frame, the upper module first contacts the pressure spring part and pushes the pressure spring part to move downward, and the pressure spring part converts the pressure applied downward by the upper module due to its own weight into heat energy and kinetic energy and consumes it, and when the pressure spring part moves downward, it pushes the cylinder part to contract, and the contracted cylinder part consumes the pressure of the pressure spring part.

[0008] Furthermore, a plurality of upper module docking columns are fixedly provided below the upper module.

[0009] Furthermore, the platform hull portion includes a semi-submersible platform hull, a plurality of hull docking plugs and a U-shaped groove, wherein the U-shaped groove is arranged in the middle above the semi-submersible platform hull, and the hull docking plugs are fixed above the semi-submersible platform hull and located on both sides of the U-shaped groove.

[0010] Furthermore, the construction barge section includes a floating construction barge and a plurality of barge slideways, the floating construction barge is located in a U-shaped trough, and the barge slideways are all fixedly arranged on the upper surface of the floating construction barge.

[0011] Furthermore, the support frame also includes a frame group, a column group and a connection group, the frame group includes a plurality of top frames and a plurality of bottom frames, the column group includes a plurality of main columns and a plurality of frame vertical plates, and the connection group includes two slide beams and support points.

[0012] Furthermore, the slide beams are all slidably connected to the barge slides, the bottom frames are all fixedly arranged between the two slide beams, the slide beams and the outer periphery of the bottom frame are rectangular, the top frame is fixedly connected at the head and tail to form a rectangle, the top frame is located above the bottom frame, and the width of the rectangle enclosed by the top frame is greater than the width of the rectangle enclosed by the slide beams and the bottom frame.

[0013] Furthermore, the top ends of the main columns are fixedly connected to the top frame, and the bottom ends are fixedly connected to the slide beams. The main columns are inclined outward by 5° to 10°. The top ends of the frame vertical pieces are fixedly connected to the top frame, and the bottom ends are fixedly connected to the bottom frame. The frame vertical pieces are inclined by 10° to 15°. The frame vertical pieces, the top frame and the bottom frame form a triangle, and the support points are fixedly arranged at the top ends of the main columns.

[0014] Furthermore, the pressure spring part includes a pressure cylinder group and a pressure column group, the pressure cylinder group includes a pressure cylinder, a pressure cylinder cavity, a plurality of sliders and a plurality of first ribs, the pressure cylinder cavity is located inside the pressure cylinder, the sliders are all located at the outer circle of the bottom of the pressure cylinder cavity and are all fixedly connected to the pressure cylinder, and the first ribs are all fixedly arranged on the outer surface of the sliders.

[0015] Furthermore, the pressure column group includes a pressure column, a plurality of slide grooves, a plurality of second edges and a spring. The pressure column is slidably arranged in the pressure cylinder cavity. The bottom end of the spring is fixedly connected to the top of the pressure column, and the top end is fixedly connected to the top of the pressure cylinder. The slide grooves are all inclined on the outer ring of the pressure column. The slide grooves are inclined at °~°. The second edges are all fixedly arranged in the slide grooves. The pressure column is rotatably connected to the buffer plate.

[0016] Further, the oil cylinder part includes an outer cylinder group and an inner cylinder group, the outer cylinder group includes an outer cylinder body and an outer cylinder cavity, the inner cylinder group includes an inner cylinder body, an inner cylinder cavity and an oil hole, the bottom end of the outer cylinder body is fixedly connected to the buffer plate, the outer cylinder cavity is located in the outer cylinder body, the inner cylinder body is slidably connected to the outer cylinder body, the inner cylinder cavity is located in the inner cylinder body, and the oil hole is arranged at the bottom end of the inner cylinder body and is connected to the inner cylinder cavity.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the rotating pressure column converts the gravity of the upper module into kinetic energy, reducing the pressure of the upper module on the support frame; the first rib and the second rib rub against each other to generate heat, and slow down the descending speed of the slider, reducing the impact force of the upper module on the support frame. The first rib and the second rib convert the gravity of the upper module into thermal energy, reducing the pressure of the upper module on the support frame; when the inner cylinder body moves downward, it needs to overcome the resistance of the hydraulic oil in the outer cylinder cavity, slowing down the speed at which the upper module presses against the support frame, further reducing the impact force of the upper module on the support frame, and preventing the support frame from being damaged by the upper module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the support frame of the present invention;

[0019] Figure 2 It is a schematic diagram of the closing operation of the present invention;

[0020] Figure 3 This is a schematic diagram of the position of the buffer portion of the present invention;

[0021] Figure 4 It is an overall schematic diagram of the buffer part of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the buffer portion of the present invention;

[0023] Figure 6 This is a schematic diagram of the pressing cylinder structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the pressure column structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the oil cylinder part of the present invention.

[0026] Illustration Description:

[0027] 11. Slideway beam; 12. Main column; 13. Support point; 14. Top frame; 15. Bottom frame; 16. Frame vertical piece; 17. Buffer part; 18. Spring-pressing part; 19. Cylinder part; 20. Buffer plate; 181. Pressure cylinder; 182. Pressure column; 183. Pressure cylinder cavity; 184. Slider; 185. First rib; 186. Slide groove; 187. Second rib; 188. Spring; 191. Outer cylinder body; 192. Outer cylinder cavity; 193. Inner cylinder body; 194. Inner cylinder cavity; 195. Oil hole; 21. Upper module; 22. Semi-submersible platform hull; 23. Floating construction barge; 24. Support frame; 25. Barge slideway; 27. Upper module docking column; 28. Hull docking plug. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] See also Figures 1 to 8 , This embodiment provides a support frame suitable for floating and closing a semi-submersible platform, including an upper module 21, which provides support for ship loading, towing and floating operations, and also includes: a platform hull portion, which provides space and support for a construction barge portion;

[0030] A construction barge section, the construction barge section provides support for the support frame 24;

[0031] A support frame 24 is slidably arranged on the top of the floating construction barge 23. A plurality of buffer parts 17 are arranged on the top of the support frame 24. The buffer part 17 includes a spring-loaded part 18, a plurality of cylinder parts 19 and a buffer plate 20. The buffer plate 20 is fixedly arranged on the top of the support frame 24. The spring-loaded part 18 is rotatably arranged in the middle part above the buffer plate 20. The cylinder part 19 is circumferentially fixedly arranged on the outer ring of the lower surface of the spring-loaded part 18. The bottom surface of the cylinder part 19 is fixedly connected to the upper surface of the buffer plate 20. When the upper module 21 is placed on the top of the support frame 24, the upper module 21 first contacts the spring-loaded part 18 and pushes the spring-loaded part 18 to move downward. The spring-loaded part 18 converts the pressure exerted downward by the upper module 21 due to its own weight into heat energy and kinetic energy and consumes it. When the spring-loaded part 18 moves downward, it pushes the cylinder part 19 to contract, and the contracted cylinder part 19 consumes the pressure of the spring-loaded part 18.

[0032] A plurality of upper module docking columns 27 are fixedly provided below the upper module 21 . When the upper module 21 is hoisted above the support frame 24 , the upper module docking columns 27 are kept aligned with the hull docking plugs 28 to position the upper module 21 .

[0033] The platform hull portion includes a semi-submersible platform hull 22, a plurality of hull docking plugs 28 and a U-shaped groove. The U-shaped groove is arranged in the middle part above the semi-submersible platform hull 22. The hull docking plugs 28 are fixed above the semi-submersible platform hull 22 and are located on both sides of the U-shaped groove. The floating construction barge 23 is located in the U-shaped groove for construction operations.

[0034] The construction barge section includes a floating construction barge 23 and a plurality of barge slideways 25 . The floating construction barge 23 is located in the U-shaped groove, and the barge slideways 25 are all fixedly arranged on the upper surface of the floating construction barge 23 .

[0035] The support frame 24 also includes a frame group, a column group and a connection group. The frame group includes a plurality of top frames 14 and a plurality of bottom frames 15. The column group includes a plurality of main columns 12 and a plurality of frame vertical plates 16. The connection group includes two slide beams 11 and support points 13.

[0036] The slide beams 11 are all slidably connected to the barge slide 25, and the bottom frames 15 are all fixedly arranged between the two slide beams 11. The slide beams 11 and the bottom frames 15 are rectangular in outer periphery, and the top frames 14 are fixedly connected at the head and tail to form a rectangle. The top frame 14 is located above the bottom frame 15, and the width of the rectangle enclosed by the top frame 14 is greater than the width of the rectangle enclosed by the slide beams 11 and the bottom frame 15.

[0037] The top ends of the main columns 12 are fixedly connected to the top frame 14, and the bottom ends are fixedly connected to the slide beam 11. The main columns 12 are tilted outward by 5° to 10°, and 8° is preferably used in this embodiment, so that the top frames 14 are located outside the bottom frame 15 and the slide beam 11. The main columns 12 convert part of the downward pressure of the top frame 14 into internal force to prevent the main columns 12 from being broken. The top ends of the frame uprights 16 are fixedly connected to the top frame 14, and the bottom ends are fixedly connected to the bottom frame 15. The frame uprights 16 are tilted by 10° to 15°, and 12° is preferably used in this embodiment to increase the stability of the support frame 24. The frame uprights 16, the top frame 14 and the bottom frame 15 form a triangle, and the support points 13 are fixedly set at the top ends of the main columns 12.

[0038] The spring-pressing part 18 includes a pressing cylinder group and a pressing column group. The pressing cylinder group includes a pressing cylinder 181, a pressing cylinder cavity 183, a plurality of sliders 184 and a plurality of first ribs 185. The pressing cylinder cavity 183 is located inside the pressing cylinder 181. The sliders 184 are all located at the outer circle of the bottom of the pressing cylinder cavity 183 and are fixedly connected to the pressing cylinder 181. The first ribs 185 are all fixedly arranged on the outer surface of the sliders 184.

[0039] The pressure column group includes a pressure column 182, a plurality of slide grooves 186, a plurality of second edges 187 and a spring 188. The pressure column 182 is slidably arranged in the pressure cylinder cavity 183. The bottom end of the spring 188 is fixedly connected to the top of the pressure column 182, and the top end is fixedly connected to the top of the pressure cylinder 181. The slide grooves 186 are all inclined on the outer ring of the pressure column 182, and the slide grooves 186 are inclined at 15° to 20°. The second edges 187 are all fixedly arranged in the slide grooves 186, and the pressure column 182 is rotatably connected to the buffer plate 20.

[0040] The cylinder part 19 includes an outer cylinder group and an inner cylinder group. The outer cylinder group includes an outer cylinder body 191 and an outer cylinder cavity 192. The inner cylinder group includes an inner cylinder body 193, an inner cylinder cavity 194 and an oil hole 195. The bottom end of the outer cylinder body 191 is fixedly connected to the buffer plate 20. The outer cylinder cavity 192 is located in the outer cylinder body 191. The inner cylinder body 193 is slidably connected to the outer cylinder body 191. The inner cylinder cavity 194 is located in the inner cylinder body 193. The oil hole 195 is provided at the bottom end of the inner cylinder body 193 and is connected to the inner cylinder cavity 194. The outer cylinder cavity 192 and the inner cylinder cavity 194 are filled with hydraulic oil. The hydraulic oil can flow between the outer cylinder cavity 192 and the inner cylinder cavity 194 through the oil hole 195.

[0041] According to the positional relationship between the semi-submersible platform hull 22 and the floating construction barge 23, and the distance between the two, the length, width and height of the support frame 24 are determined so that the support frame 24 can be smoothly connected to the floating construction barge 23. While ensuring that the height of the support frame 24 meets the clearance requirements of the floating operation steps such as entering the ship, docking, and withdrawing from the ship, it will not collide with the semi-submersible platform hull 22. The support point 13 is set under the axis main beam and the axis diagonal brace of the upper module 21 vertical piece, while avoiding the upper module docking column 27, so as to meet the support and floating operation requirements at the same time. The position of the lower slideway beam 11 needs to be combined with the strong rib position of the floating construction barge 23 to bear the floating weight of the upper module 21. After the support point 13 and the position of the lower slide beam 11 are determined, the support angle of the main column 12 can be determined accordingly, and the top frame 14, the bottom frame 15 and the frame uprights 16 of the supporting structure are planned. Combined with the main dimensions of the support frame 24, the position of the support point 13, the position of the slide beam 11 and the support angle of the main column 12 determined in the above steps, the main components are connected by beams, oblique tendons and other structural parts to form a frame structure to meet the functional requirements of the support frame 24. The specifications of the structural parts of the support frame 24 are determined through calculation and analysis, which means carrying out calculation and analysis such as loading, towing, and floating, and reviewing and improving the specifications of the rods of the support frame 24 determined in the previous steps to form a design document that can be used for construction.

[0042] The upper module 21 is hoisted to the top of the supporting frame 24 by a hoisting device, and the hoisting device is lowered to place the upper module 21 on the top of the supporting point 13. The upper module 21 pushes the pressure cylinder 181 downward under the action of its own weight, and the pressure cylinder 181 moves downward along the pressure column 182, driving the slider 184 to move downward along the slide groove 186. Since the slide groove 186 is inclined, the downward thrust of the slider 184 is decomposed into two components along the slide groove 186 and perpendicular to the slide groove 186. The component along the slide groove 186 direction causes the slider 184 to move downward along the slide groove 186, and the component vertical to the slide groove 186 direction causes the slider 184 to push the pressure column 182 to rotate. The rotating pressure column 182 converts the gravity of the upper module 21 into kinetic energy, thereby reducing the pressure of the upper module 21 on the supporting frame 24. When the slider 184 moves downward along the slide groove 186, the first rib 185 and the second rib 187 rub against each other, generate heat, and slow down the descending speed of the slider 184, thereby reducing the impact force of the upper module 21 on the support frame 24. The first rib 185 and the second rib 187 convert the gravity of the upper module 21 into heat energy, thereby reducing the pressure of the upper module 21 on the support frame 24. When the pressure cylinder 181 moves downward, it pushes the inner cylinder body 193 to move into the outer cylinder cavity 192, and the inner cylinder body 193 squeezes the hydraulic oil in the outer cylinder cavity 192 to increase its pressure. Since the hydraulic oil pressure in the outer cylinder cavity 192 is greater than the hydraulic oil pressure in the inner cylinder cavity 194, the hydraulic oil flows from the outer cylinder cavity 192 into the inner cylinder cavity 194 along the oil hole 195. Since it needs to overcome the resistance of the hydraulic oil in the outer cylinder cavity 192, the inner cylinder body 193 slowly enters the outer cylinder cavity 192, thereby further reducing the impact force of the upper module 21 on the support frame 24 and preventing the support frame 24 from being damaged by the upper module 21.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A support frame suitable for floating and closing a semi-submersible platform, comprising an upper module (21), characterized in that: The upper module (21) provides support for ship loading, towing and floating operations, and also includes: a platform hull portion, the platform hull portion providing space and support for the construction barge portion; A construction barge portion, the construction barge portion providing support for the support frame (24); A support frame (24), wherein the support frame (24) is slidably arranged on the top of a floating construction barge (23), and a plurality of buffer parts (17) are arranged on the top of the support frame (24), wherein the buffer parts (17) include a spring-loaded part (18), a plurality of oil cylinder parts (19) and a buffer plate (20), wherein the buffer plate (20) is fixedly arranged on the top of the support frame (24), the spring-loaded part (18) is rotatably arranged on the middle part above the buffer plate (20), and the oil cylinder part (19) is fixedly arranged on the outer ring of the lower surface of the spring-loaded part (18) along the circumferential direction. The bottom surface of the oil cylinder part (19) is fixedly connected to the upper surface of the buffer plate (20). When the upper module (21) is placed on the top of the support frame (24), the upper module (21) first contacts the pressure spring part (18) and pushes the pressure spring part (18) to move downward. The pressure spring part (18) converts the pressure applied downward by the upper module (21) due to its own weight into heat energy and kinetic energy and consumes it. When the pressure spring part (18) moves downward, it pushes the oil cylinder part (19) to contract, and the contracted oil cylinder part (19) consumes the pressure of the pressure spring part (18).

2. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 1 is characterized in that: A plurality of upper module docking columns (27) are fixedly provided below the upper module (21).

3. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 1 is characterized in that: The platform hull portion comprises a semi-submersible platform hull (22), a plurality of hull docking plugs (28) and a U-shaped groove, wherein the U-shaped groove is arranged in the middle of the upper part of the semi-submersible platform hull (22), and the hull docking plugs (28) are fixedly arranged above the semi-submersible platform hull (22) and located on both sides of the U-shaped groove.

4. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 1 is characterized in that: The construction barge section comprises a floating construction barge (23) and a plurality of barge slideways (25); the floating construction barge (23) is located in a U-shaped groove, and the barge slideways (25) are all fixedly arranged on the upper surface of the floating construction barge (23).

5. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 1 is characterized in that: The support frame (24) further comprises a frame group, a column group and a connection group, wherein the frame group comprises a plurality of top frames (14) and a plurality of bottom frames (15), the column group comprises a plurality of main columns (12) and a plurality of frame uprights (16), and the connection group comprises two slideway beams (11) and a support point (13).

6. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 5 is characterized in that: The slideway beams (11) are all slidably connected to the barge slideway (25), the bottom frames (15) are all fixedly arranged between the two slideway beams (11), the slideway beams (11) and the bottom frames (15) are rectangular in periphery, the top frames (14) are fixedly connected end to end to form a rectangle, the top frames (14) are located above the bottom frames (15), and the width of the rectangle enclosed by the top frames (14) is greater than the width of the rectangle enclosed by the slideway beams (11) and the bottom frames (15).

7. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 5, characterized in that: The top ends of the main columns (12) are fixedly connected to the top frame (14), and the bottom ends are fixedly connected to the slide beam (11). The main columns (12) are inclined outward by 5° to 10°. The top ends of the frame uprights (16) are fixedly connected to the top frame (14), and the bottom ends are fixedly connected to the bottom frame (15). The frame uprights (16) are inclined by 10° to 15°. The frame uprights (16) and the top frame (14) and the bottom frame (15) form a triangle. The support points (13) are fixedly arranged at the top ends of the main columns (12).

8. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 1, characterized in that: The spring-pressing part (18) comprises a pressure cylinder group and a pressure column group. The pressure cylinder group comprises a pressure cylinder (181), a pressure cylinder cavity (183), a plurality of sliders (184) and a plurality of first ribs (185). The pressure cylinder cavity (183) is located inside the pressure cylinder (181). The sliders (184) are all located at the outer circle of the bottom of the pressure cylinder cavity (183) and are fixedly connected to the pressure cylinder (181). The first ribs (185) are all fixedly arranged on the outer surface of the sliders (184).

9. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 8, characterized in that: The pressure column group includes a pressure column (182), a plurality of slide grooves (186), a plurality of second ribs (187) and a spring (188); the pressure column (182) is slidably arranged in the pressure cylinder cavity (183); the bottom end of the spring (188) is fixedly connected to the top of the pressure column (182), and the top end is fixedly connected to the top of the pressure cylinder (181); the slide grooves (186) are all inclined on the outer ring of the pressure column (182); the slide grooves (186) are inclined at 15° to 20°; the second ribs (187) are all fixedly arranged in the slide grooves (186); the pressure column (182) is rotatably connected to the buffer plate (20).

10. The supporting frame suitable for floating and folding of a semi-submersible platform according to claim 8, characterized in that: The oil cylinder part (19) comprises an outer cylinder group and an inner cylinder group, the outer cylinder group comprises an outer cylinder body (191) and an outer cylinder cavity (192), the inner cylinder group comprises an inner cylinder body (193), an inner cylinder cavity (194) and an oil hole (195), the bottom end of the outer cylinder body (191) is fixedly connected to the buffer plate (20), the outer cylinder cavity (192) is located in the outer cylinder body (191), the inner cylinder body (193) is slidably connected to the outer cylinder body (191), the inner cylinder cavity (194) is located in the inner cylinder body (193), and the oil hole (195) is arranged at the bottom end of the inner cylinder body (193) and is connected to the inner cylinder cavity (194).

Images