A highly stable offshore drilling platform

Abstract

The present invention belongs to the technical field of drilling platforms, and specifically relates to a highly stable offshore drilling platform, comprising a workbench, the workbench being equipped with a support column, a push block sliding within the support column, the push block contacting a cutter head; an extension assembly, the extension assembly including a pull rope 1, the upper end of which extends into the cutter head and is connected to an extension plate; an expansion assembly, the expansion assembly including an expansion plate; and a drive assembly including a winch, the winch having pull ropes 2 and 3 fixed therein, the pull ropes 2 and 3 being connected to the upper and lower sides of the expansion plate. This invention can expand the contact area with the deep soil of the seabed during installation of the drilling platform, thereby improving the stability of the drilling platform. It can also expand the area of ​​the workbench under normal conditions, and when winds and waves are strong, the expanded plate can be driven into the seabed to further improve stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of drilling platforms, and in particular relates to an offshore drilling platform with high stability. Background Art

[0002] Offshore drilling platforms are core equipment for marine resource exploration and development, and their stability directly determines operational safety and efficiency. However, existing platforms often suffer from insufficient anti-capsulation capabilities and a high risk of foundation slippage under complex seabed conditions and extreme sea conditions.

[0003] Specifically, first of all, existing platforms mostly rely on large-diameter steel piles to penetrate the seabed. However, in heterogeneous soil layers, such as sandy or silty seabeds, due to their insufficient load-bearing capacity and supporting force, the lateral friction resistance of the installed piles will be lower than the design value. During use, the smooth surface of the steel columns can easily cause shaking, tilting, etc., affecting stability.

[0004] Secondly, most existing platforms have rigid outer edges, used only to separate work areas or install equipment. These single-purpose structures offer no room for expansion during routine operations, nor can they proactively enhance anti-capsulation capabilities in adverse sea conditions. Furthermore, when wave impacts exceed the design threshold, the fixed structure can easily induce localized stress concentrations, exacerbating overall platform sway. Summary of the Invention

[0005] The purpose of the present invention is to provide an offshore drilling platform with high stability, which can expand the contact area with the deep soil of the seabed when the drilling platform is installed, thereby improving the stability of the drilling platform. It can also expand the area of ​​the workbench under normal conditions, and when the wind and waves are strong, the expanded plates can be driven into the seabed to further improve stability.

[0006] The technical solutions adopted by the present invention are as follows:

[0007] A highly stable offshore drilling platform comprising:

[0008] A workbench, wherein four pillars are fixedly installed at the lower end of the workbench, wherein the inner cavity of the pillar is slidably connected to a push block, and both sides of the push block are contact-connected with a cutter head, and two groups of the cutter heads are slidably connected to the left and right sides of the inner cavity at the lower end of the pillar;

[0009] An extension assembly, the extension assembly including two sets of pull ropes 1, the two sets of pull ropes 1 being arranged at the lower end of the inner cavity of the pillar, and the upper ends of the two sets of pull ropes 1 extending into the inner cavity of the cutter head and being fixedly connected to extension plates, respectively, and the extension plates being rotatably connected to the outer surface of the cutter head;

[0010] An expansion component, comprising four sets of expansion boards, each of which is disposed at one of the four corners of the workbench;

[0011] A drive assembly, the drive assembly including a winch, the winch being mounted on a workbench, and a second pull rope and a third pull rope being fixed to an inner cavity of the winch, the other ends of the second pull rope and the third pull rope being fixedly connected to the upper and lower sides of the expansion plate, respectively;

[0012] When the pushing block pushes the cutter head to extend, the pull rope is pulled to drive the extension plate to extend outward;

[0013] The winch drives the second and third pull ropes to retract or loosen, thereby driving the expansion plate to rise and fall.

[0014] In a preferred embodiment, a through slot is provided at the upper end of the workbench above the four pillars, and a sealing cover is fixedly connected to the upper end of the through slot.

[0015] In a preferred embodiment, the inner cavities of the four groups of pillars are all rotatably connected to rotating rods, the upper ends of the rotating rods are fixedly connected to handles, and the outer rings of the upper ends of the rotating rods are provided with threaded grooves, and the outer threads of the grooves are connected to nuts, and the outer rings of the lower ends of the rotating rods are also provided with threaded grooves, and the outer threads of the grooves are connected to lifting columns, and the lifting columns are slidably connected to the lower ends of the inner cavities of the pillars, and the upper ends of the pushing blocks are fixedly connected to the middle part of the lower ends of the lifting columns.

[0016] In a preferred embodiment, the outer ring of the cutter head located at one end of the inner cavity of the pillar is provided with a convex plate, and three groups of springs are fixedly connected to the side of the convex plate close to the inner wall of the pillar, and the other ends of the springs are fixedly connected to the inner cavity wall of the pillar.

[0017] In a preferred embodiment, the extension assembly also includes two groups of limit blocks, both groups of limit blocks are fixedly connected to the lower end of the inner cavity of the pillar, and the lower end of the cutter head is provided with a limit groove, the limit blocks are slidably connected to the inner cavity of the limit groove, and the lower end of the pull rope is fixedly connected to the side of the limit block close to the outside of the pillar.

[0018] In a preferred embodiment, the extension component also includes two groups of limiting wheels, both groups of limiting wheels are rotatably connected to the inner cavity wall of the cutter head, and the two groups of limiting wheels are symmetrically arranged on the front and back sides of the inner cavity wall of the cutter head, the middle outer rings of the two groups of pull ropes are respectively rollingly connected to the inner rings of the two groups of limiting wheels, and the part of the extension plate located in the inner cavity of the cutter head is fixedly connected to spring 2, and the other end of spring 2 is fixedly connected to the inner cavity wall of the cutter head.

[0019] In a preferred embodiment, the expansion component also includes four groups of limit frames, which are fixedly connected to the four corners of the lower end of the workbench, and the outer rings of the limit frames are slidably connected to the lifting frames. The four groups of expansion plates are rotatably connected to the upper ends of the four groups of lifting frames, and the lower end of the expansion plate is fixedly connected to a fixing pin on the side away from the workbench.

[0020] In a preferred embodiment, the expansion component also includes eight groups of reinforcement plates, which are respectively fixedly connected to the four corners of the upper end of the workbench, and the lower ends of the eight groups of reinforcement plates are all in contact with the upper end of the expansion plate.

[0021] In a preferred embodiment, the driving assembly further includes a blocking block, which is fixedly connected to the outer ring of the pull rope three and is arranged below the lifting frame.

[0022] In a preferred embodiment, one end of the second pull rope extending from the winch passes through the workbench and is fixedly connected to the middle of the upper end of the expansion plate, while one end of the third pull rope extending from the winch passes through the workbench and surrounds the lower end of the limit frame, then passes upward through the lifting frame and is fixedly connected to the middle of the lower end of the expansion plate.

[0023] The technical effects achieved by the present invention are:

[0024] The push block and cutter head of the present invention can expand the contact area with the deep seabed soil during installation of the drilling platform, thereby improving the stability of the drilling platform. During installation, the pillar is inserted into the seabed, and the cutter head is also inserted along with the pillar. After the lower end of the pillar and the cutter head reach a specified depth, the driving component in the pillar is driven to drive the push block downward. The slope at the lower end of the push block then pushes the cutter head outward, allowing the cutter head to further penetrate the seabed soil, forming a T-shaped path and improving the stability of the drilling platform.

[0025] The extension assembly and cutter head of the present invention can extend the extension plate as the cutter head extends, further increasing the contact area with the deep seabed soil and improving stability. During installation, as the cutter head extends outward, it moves relative to the support. At this time, the pull rope also moves relative to the cutter head, causing the pull rope to be pulled, and pulling the extension plate to rotate and extend outward, causing the extension plate to be inserted into the deep soil, further increasing the contact area with the deep seabed soil and improving the stability of the drilling platform.

[0026] The expansion assembly and drive assembly of the present invention can expand the area of ​​the workbench under normal conditions, and when the wind and waves are strong, the expanded plate can be driven into the seabed to further improve stability; under normal conditions, the expansion plate is parallel to the workbench to expand the area. If the wind and waves are strong, the winch releases the second pull rope and retracts the third pull rope, and the third pull rope pulls the expansion plate downward and continuously descends along the vertical direction of the workbench through the third pull rope until it is driven into the soil of the seabed, forming multiple groups of stable protective structures with the pillars, thereby further improving the stability and wind and wave resistance of the drilling platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the workbench in the present invention;

[0029] Figure 3 It is a structural diagram of the pillar in the present invention;

[0030] Figure 4 It is a cross-sectional schematic diagram of the pillar in the present invention;

[0031] Figure 5 is a schematic cross-sectional view of a lifting column in the present invention;

[0032] Figure 6 It is a schematic diagram of the positions of the push block and the cutter head in the present invention;

[0033] Figure 7 It is a schematic diagram of the position of the extension component in the present invention;

[0034] Figure 8 It is a structural schematic diagram of the extension plate in the present invention;

[0035] Figure 9 It is a schematic diagram of the location of the expansion components in the present invention;

[0036] Figure 10 is a bottom view schematic diagram of the expansion component in the present invention;

[0037] Figure 11 It is a structural diagram of the driving component in the present invention;

[0038] Figure 12 It is a schematic diagram of the position of the blocking block in the present invention;

[0039] Figure 13 It is a schematic diagram of the position of the pull rope three in the present invention;

[0040] Figure 14 It is a schematic diagram of the positions of the second and third pull ropes in the present invention.

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 10. Workbench; 11. Pillar; 12. Sealing cover; 13. Turn rod; 14. Handle; 15. Nut; 16. Lifting column; 17. Push block; 18. Cutting head; 19. Spring 1; 20. Extension assembly; 21. Limit block; 22. Limit slot; 23. Pull rope 1; 24. Extension plate; 25. Limit wheel; 26. Spring 2; 30. Extension assembly; 31. Limit frame; 32. Lifting frame; 33. Extension plate; 34. Fixing pin; 35. Reinforcement plate; 40. Drive assembly; 41. Winch; 42. Pull rope 2; 43. Pull rope 3; 44. Blocking block. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0046] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0047] Please see the attached Figure 1 、 Figure 4 、 Figure 7 、 Figures 9 to 11 As shown, this embodiment provides an offshore drilling platform with high stability, comprising:

[0048] The workbench 10 has four pillars 11 fixedly mounted on its lower end. Push blocks 17 are slidably connected to the inner cavities of the pillars 11. Cutting heads 18 are contacted and connected on both sides of the pushing blocks 17. Two sets of cutting heads 18 are slidably connected to the left and right sides of the inner cavity at the lower end of the pillars 11.

[0049] Extension assembly 20, which includes two sets of pull ropes 23. The two sets of pull ropes 23 are arranged at the lower end of the inner cavity of the support 11, and the upper ends of the two sets of pull ropes 23 extend into the inner cavity of the cutter head 18 and are respectively fixedly connected to extension plates 24. The extension plates 24 are rotatably connected to the outer surface of the cutter head 18 through sealed bearings;

[0050] The expansion assembly 30 includes four sets of expansion plates 33, which are respectively arranged at the four corners of the workbench 10;

[0051] The drive assembly 40 includes a hoist 41, which is mounted on the workbench 10. A second pull rope 42 and a third pull rope 43 are fixed to the inner cavity of the hoist 41. The other ends of the second pull rope 42 and the third pull rope 43 are fixedly connected to the upper and lower sides of the expansion plate 33 respectively.

[0052] When the push block 17 pushes the cutter head 18 to extend, the pull rope 1 23 is pulled to drive the extension plate 24 to extend outward;

[0053] The winch 41 drives the second pull rope 42 and the third pull rope 43 to retract or release, thereby driving the expansion plate 33 to move up and down.

[0054] It should be noted that the hoist 41 should have a built-in self-locking function.

[0055] In this embodiment, during installation, support column 11 is inserted deep into the seabed soil, along with cutter head 18. Once the lower end of support column 11 and cutter head 18 reach the designated depth, the drive component within support column 11 is activated, forcing push block 17 to slide downward within the inner cavity of support column 11. The inclined surfaces of push block 17 contact cutter head 18, pushing it outward along the lower end of support column 11, further penetrating the seabed soil. Simultaneously, as cutter head 18 extends outward, it pulls on pull rope 123. Pull rope 123, under pressure, pulls extension plate 24, which rotates and extends along the outer surface of cutter head 18, pushing extension plate 24 deeper into the soil, further expanding the contact area with the deep seabed soil and improving the stability of the drilling platform. Under normal conditions, expansion plate 33 is positioned parallel to workbench 10 to expand the usable area of ​​workbench 10 and facilitate operations on the drilling platform. When encountering strong winds and waves, winch 41 releases rope 2 42 and retracts rope 3 43. During this retraction, rope 3 43 pulls expansion plate 33 downward along the outer ring of retaining frame 31 and lifting frame 32. Continued pulling of rope 3 43 causes expansion plate 33 to descend vertically along work platform 10 until its lower end penetrates the seabed soil. At this point, expansion plate 33 and support column 11 form a multi-layered, secure structure, further enhancing the drilling platform's stability and wave resistance.

[0056] Next, please refer to Figures 1 to 6 The upper end of the workbench 10 is provided with a through slot above the four pillars 11, and the upper ends of the through slots are fixedly connected with sealing covers 12;

[0057] The inner cavities of the four groups of pillars 11 are all rotatably connected to the rotating rods 13 through sealed bearings. The upper ends of the rotating rods 13 are fixedly connected to the handles 14. The outer rings of the upper ends of the rotating rods 13 are provided with threaded grooves, and the outer threads of the grooves are connected to the nuts 15. The outer rings of the lower ends of the rotating rods 13 are also provided with threaded grooves, and the outer threads of the grooves are connected to the lifting columns 16. The lifting columns 16 are slidably connected to the lower ends of the inner cavities of the pillars 11, and the upper ends of the pushing blocks 17 are fixedly connected to the middle of the lower ends of the lifting columns 16.

[0058] The outer ring of the cutter head 18 is located at one end of the inner cavity of the pillar 11 and is provided with a convex plate, and three groups of springs 19 are fixedly connected to one side of the convex plate close to the inner wall of the pillar 11, and the other ends of the springs 19 are fixedly connected to the inner cavity wall of the pillar 11.

[0059] It should be noted that the sealing cover 12 is located below the hoist 41, and the hoist 41 is installed above the sealing cover 12 through a bracket, with a gap reserved therebetween to facilitate opening the sealing cover 12 for operation;

[0060] The outer ring of the nut 15 is provided with a protruding rod, which is intended to facilitate the driving of the nut 15 for rotation;

[0061] The lifting column 16 is provided with protrusions on both the front and rear sides, and the protrusions are also slidably connected to the inner cavity of the pillar 11. The purpose is to use the protrusions to limit the stability of the lifting column 16 when it is raised or lowered, and prevent the lifting column 16 from rotating during the raising or lowering, which would affect the raising or lowering of the push block 17;

[0062] The left and right sides of the lower end of the push block 17 are provided with slopes, and the portion where the cutter head 18 contacts the push block 17 is also provided with a slope, so that the push block 17 can use the slope to push the cutter head 18 outward when it descends;

[0063] The lower end and outer side of the cutter head 18 are provided with cutting edges, so that the cutting edges can make the process of the cutter head 18 extending outward and penetrating into the seabed smoother;

[0064] The lower ends of the four groups of pillars 11 are all provided with pointed cones, so as to facilitate penetration into the seabed;

[0065] A sealing block is provided in the middle of the inner cavity of the support 11, and the rotating rod 13 is rotatably connected to the inner cavity of the sealing block through a sealing bearing;

[0066] The rotating rod 13 is composed of a threaded rod with a thread groove at the lower end and a smooth round rod at the upper end, and the threaded rod is used to drive the lifting column 16 to move up and down.

[0067] In this embodiment, during installation, the pointed cone provided at the lower end of the pillar 11 penetrates into the seabed soil, providing initial support for the drilling platform. As the pillar 11 penetrates deeper, the cutter head 18 also moves down to the specified depth. At this time, the rotating rod 13 is rotated by operating the handle 14. Since the lower end of the rotating rod 13 is provided with a threaded groove and is threadedly connected to the lifting column 16, the rotation of the rotating rod 13 drives the lifting column 16 to slide down in the inner cavity of the pillar 11. The downward movement of the lifting column 16 drives the push block 17 to descend. The slope design of the push block 17 enables it to smoothly push the cutter head 18 to slide outward along the inner cavity of the lower end of the pillar 11, further inserting it into the seabed soil, forming a T-shaped path, and enhancing the stability of the drilling platform.

[0068] Next, please refer to Figures 7 and 8 The extension assembly 20 also includes two sets of limit blocks 21, both of which are fixedly connected to the lower end of the inner cavity of the pillar 11, and the lower end of the cutter head 18 is provided with a limit slot 22, the limit blocks 21 are slidably connected to the inner cavity of the limit slot 22, and the lower end of the pull rope 23 is fixedly connected to the side of the limit block 21 close to the outer side of the pillar 11;

[0069] The extension component 20 also includes two sets of limiting wheels 25, which are rotatably connected to the inner cavity wall of the cutter head 18 through a rotating shaft, and the two sets of limiting wheels 25 are symmetrically arranged on the front and back sides of the inner cavity wall of the cutter head 18. The middle outer rings of the two sets of pull ropes 23 are respectively rollingly connected to the inner rings of the two sets of limiting wheels 25. The part of the extension plate 24 located in the inner cavity of the cutter head 18 is fixedly connected to a spring 26, and the other end of the spring 26 is fixedly connected to the inner cavity wall of the cutter head 18.

[0070] It should be noted that the inner ring depth of the limiting wheel 25 should be greater than the diameter of the pull rope 23 to prevent the pull rope 23 from escaping from the limiting wheel 25 and affecting its use;

[0071] The second spring 26 has an arc-shaped structure, and is designed to adapt to the running trajectory of the extension plate 24 .

[0072] Preferably, in order to improve the stabilizing effect of the extension plate 24 and the smoothness of the extension plate 24, a cutting edge can be provided on the portion of the extension plate 24 located outside the cutter head 18, and multiple sets of extension plates 24 and pull ropes 23 can be installed in the cutter head 18 as needed, thereby further improving the stabilizing effect by adding multiple sets of extension plates 24;

[0073] In order to facilitate the installation of the internal components of the cutter head 18, an inspection port should be opened at the upper end of the internal cavity of the cutter head 18, and a cover plate should be installed in the inspection port.

[0074] In this embodiment, when the cutter head 18 is extended, it will pull the pull rope 23. After the pull rope 23 is subjected to force, it will roll along the outer ring of the limiting wheel 25. At this time, the pull rope 23 will pull the extension plate 24 to rotate and extend outward along the outer surface of the cutter head 18 and insert it into the deep soil, further expanding the contact area with the deep soil of the seabed and enhancing the stability of the drilling platform.

[0075] Next, please refer to Figures 9 to 12 The expansion assembly 30 also includes four sets of limit frames 31, which are fixedly connected to the four corners of the lower end of the workbench 10, and the outer rings of the limit frames 31 are slidably connected to the lifting frames 32. The four sets of expansion plates 33 are rotatably connected to the upper ends of the four sets of lifting frames 32 through rotating shafts, and the lower ends of the expansion plates 33 are fixedly connected to the side away from the workbench 10 with fixed pins 34.

[0076] The expansion assembly 30 further includes eight groups of reinforcement plates 35 , which are respectively fixedly connected to the four corners of the upper end of the workbench 10 , and the lower ends of the eight groups of reinforcement plates 35 are all in contact with the upper end of the expansion plate 33 .

[0077] It should be noted that under normal conditions, the reinforcement plate 35 can fix the expansion plate 33 to the four corners of the workbench 10 through structures such as connecting bolts, and then use the winch 41 and the connecting bolts to fix the expansion plate 33 to improve the stability of the expansion plate 33, thereby expanding the active area of ​​the workbench 10 through the expansion plate 33;

[0078] A 45° slope is provided at the upper end of the lifting frame 32 at the lower end of the expansion plate 33. This allows the expansion plate 33 to tilt 45° along the slope when it is lowered. The fixing pins 34 are also tilted 45° in their normal state. This allows the fixing pins 34 to be perpendicular to the horizontal when the expansion plate 33 is tilted. This allows the fixing pins 34 to secure the expansion plate 33 to the seabed during its descent, thereby improving the stability of the work platform 10.

[0079] A connecting rod is provided at the middle of the lower end of the limiting frame 31, and the outer ring of the middle section of the pull rope 3 43 is rollingly connected to the outer ring of the connecting rod;

[0080] Here, in order to improve the rolling stability of the pull rope three 43, a groove can be opened or a concave ring can be installed at the position of the connecting rod of the limit frame 31 to improve the smoothness of the rolling of the pull rope three 43.

[0081] In this embodiment, under normal conditions, the expansion plate 33 is parallel to the workbench 10 and is arranged at the four corners of the workbench 10. It is fixed to the workbench 10 via the reinforcement plate 35 to expand the usable area of ​​the workbench 10. When the wind and waves are strong, the expansion plate 33 is driven downward by the drive assembly 40 and fits on the slope at the upper end of the lifting frame 32. In the subsequent descent process, the lower end of the expansion plate 33 and the fixing pin 34 will both penetrate into the soil of the seabed. At this time, the expansion plate 33 and the pillar 11 together form a stable structure, which can greatly improve the wind and wave resistance and stability of the drilling platform and ensure the safe conduct of drilling operations.

[0082] Please refer again Figures 10 to 14 The driving assembly 40 further includes a blocking block 44, which is fixedly connected to the outer ring of the pull rope 3 43, and the blocking block 44 is disposed below the lifting frame 32;

[0083] One end of the pull rope 2 42 extending from the winch 41 passes through the workbench 10 and is fixedly connected to the middle of the upper end of the expansion plate 33, while the other end of the pull rope 3 43 extending from the winch 41 passes through the workbench 10 and surrounds the lower end of the limit frame 31, then passes upward through the lifting frame 32 and is fixedly connected to the middle of the lower end of the expansion plate 33.

[0084] It should be noted that, in a normal state, when the expansion board 33 is parallel to the workbench 10, the blocking block 44 is attached to the bottom of the lifting frame 32. This is to ensure that when the expansion board 33 is raised, the blocking block 44 can pull the lifting frame 32 up, thereby sharing the pressure on the rotating shaft between the expansion board 33 and the lifting frame 32 and improving stability.

[0085] The second pull rope 42 is wound around the drive shaft of the winch 41 in a clockwise direction, while the third pull rope 43 is wound around the drive shaft of the winch 41 in a counterclockwise direction. This is so that when the winch 41 rotates clockwise, the second pull rope 42 is retracted and the third pull rope 43 is released, thereby causing the lifting frame 32 and the expansion plate 33 to ascend. When the winch 41 rotates counterclockwise, the second pull rope 42 is released and the third pull rope 43 is retracted, thereby causing the lifting frame 32 and the expansion plate 33 to descend.

[0086] Pull rope 1 23 , pull rope 2 42 and pull rope 3 43 are all corrosion-resistant metal cables.

[0087] Preferably, in order to deal with the attachment of marine organisms, a scraper can be set at the middle of the upper end of the expansion plate 33 and the inner ring of the lower end of the lifting frame 32 to scrape off the marine organisms attached to the surface of the pull rope 2 42 and the pull rope 3 43, thereby facilitating the lifting and lowering of the device.

[0088] In this embodiment, when the expansion panel 33 needs to be raised, the winch 41 begins to rotate clockwise, driving the second pull rope 42 to wind around the drive shaft while simultaneously releasing the third pull rope 43. The retraction of the second pull rope 42 causes the upper end of the expansion panel 33 to move upward. At this point, the blocking block 44 abuts against the bottom of the lifting frame 32. As the expansion panel 33 rises, the blocking block 44 pulls the lifting frame 32 upward synchronously, ensuring a stable connection between the expansion panel 33 and the lifting frame 32. When the expansion panel 33 reaches its desired height, the winch 41 stops, and the expansion panel 33 is now parallel to the workbench 10, providing a stable working platform for workers. Conversely, in inclement weather, the winch 41 begins to rotate counterclockwise, releasing the second pull rope 42 and retracting the third pull rope 43. The retraction of the third pull rope 43 causes the lower end of the expansion panel 33 to tilt toward the workbench 10, abutting against the slope of the lifting frame 32, and pulling the lifting frame 32 downward. As the expansion plate 33 tilts and the lifting frame 32 continues to descend, the expansion plate 33 and the fixing pins 34 penetrate into the seabed soil, further enhancing the stability of the drilling platform.

[0089] The operating principle of the present invention is as follows: During installation, the pointed cone and cutter head 18 at the lower end of the support 11 penetrate the seabed soil. Upon reaching the designated depth, the handle 14 is used to rotate the rotating rod 13, driving the lifting column 16 downward within the inner cavity of the support 11, lowering the push block 17. The push block 17, using the slope, pushes the cutter head 18 outward along the lower end of the support 11, further penetrating the seabed soil and enhancing the stability of the drilling platform. As the cutter head 18 extends, it pulls on the pull rope 1 23, which in turn pulls the extension plate 24 along the outer surface of the cutter head 18, extending it and penetrating deeper into the soil, further expanding the contact area with the deep seabed soil. Under normal conditions, expansion plates 33 are located at the four corners of the work platform 10 and secured to the work platform 10 via reinforcement plates 35, expanding the work platform 10's surface. When winds and waves are strong, the winch 41 begins to rotate counterclockwise, releasing the pull rope 2 42 and retracting the pull rope 3 43. Retracting the pull rope 3 (43) pulls the expansion plate (33) against the slope of the lifting frame (32), causing the lifting frame (32) to descend. As the lifting frame (32) continues to descend, the expansion plate (33) and the anchor pins (34) penetrate the seabed soil. At this point, the expansion plate (33) and the support pillars (11) form a stable structure, significantly enhancing the drilling platform's wind and wave resistance and stability, ensuring safe drilling operations.

[0090] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A highly stable offshore drilling platform, characterized by: include: A workbench (10), wherein four pillars (11) are fixedly mounted at the lower end of the workbench (10), a push block (17) is slidably connected to the inner cavity of the pillar (11), and both sides of the push block (17) are contact-connected with a cutter head (18), and two groups of the cutter heads (18) are slidably connected to the left and right sides of the inner cavity at the lower end of the pillar (11); An extension assembly (20), the extension assembly (20) comprising two sets of pull ropes (23), the two sets of pull ropes (23) being arranged at the lower end of the inner cavity of the support (11), and the upper ends of the two sets of pull ropes (23) extending into the inner cavity of the cutter head (18) and being fixedly connected to extension plates (24) respectively, the extension plates (24) being rotatably connected to the outer surface of the cutter head (18); An expansion assembly (30), the expansion assembly (30) comprising four groups of expansion boards (33), the four groups of expansion boards (33) being respectively arranged at four corners of the workbench (10); A driving assembly (40), wherein the driving assembly (40) includes a winch (41), the winch (41) is mounted on the workbench (10), and a second pull rope (42) and a third pull rope (43) are fixed to the inner cavity of the winch (41), and the other ends of the second pull rope (42) and the third pull rope (43) are fixedly connected to the upper and lower sides of the expansion plate (33); When the pushing block (17) pushes the cutter head (18) to extend, the pull rope (23) is pulled to drive the extension plate (24) to extend outward; The hoist (41) drives the second pull rope (42) and the third pull rope (43) to retract or loosen, thereby driving the expansion plate (33) to rise and fall.

2. The offshore drilling platform with high stability according to claim 1, characterized in that: A through slot is provided at the upper end of the workbench (10) above the four pillars (11), and a sealing cover (12) is fixedly connected to the upper end of the through slot.

3. The offshore drilling platform with high stability according to claim 1, characterized in that: The inner cavities of the four groups of pillars (11) are all rotatably connected to a rotating rod (13), the upper end of the rotating rod (13) is fixedly connected to a handle (14), and the outer ring of the upper end of the rotating rod (13) is provided with a threaded groove, and the outer thread of the groove is connected to a nut (15), and the outer ring of the lower end of the rotating rod (13) is also provided with a threaded groove, and the outer thread of the groove is connected to a lifting column (16), the lifting column (16) is slidably connected to the lower end of the inner cavity of the pillar (11), and the upper end of the pushing block (17) is fixedly connected to the middle part of the lower end of the lifting column (16).

4. The offshore drilling platform with high stability according to claim 1, characterized in that: The outer ring of the cutter head (18) located at one end of the inner cavity of the pillar (11) is provided with a convex plate, and the side of the convex plate close to the inner wall of the pillar (11) is fixedly connected to three groups of springs (19), and the other ends of the springs (19) are fixedly connected to the inner cavity wall of the pillar (11).

5. The offshore drilling platform with high stability according to claim 1, characterized in that: The extension assembly (20) further includes two groups of limit blocks (21), both groups of limit blocks (21) are fixedly connected to the lower end of the inner cavity of the pillar (11), and the lower end of the cutter head (18) is provided with a limit slot (22), the limit blocks (21) are slidably connected to the inner cavity of the limit slot (22), and the lower end of the pull rope (23) is fixedly connected to the side of the limit block (21) close to the outer side of the pillar (11).

6. The offshore drilling platform with high stability according to claim 1, characterized in that: The extension assembly (20) also includes two sets of limiting wheels (25), both sets of limiting wheels (25) are rotatably connected to the inner cavity wall of the cutter head (18), and the two sets of limiting wheels (25) are symmetrically arranged on the front and rear sides of the inner cavity wall of the cutter head (18), and the middle outer rings of the two sets of pull ropes (23) are respectively rollingly connected to the inner rings of the two sets of limiting wheels (25), and the part of the extension plate (24) located in the inner cavity of the cutter head (18) is fixedly connected to the spring 2 (26), and the other end of the spring 2 (26) is fixedly connected to the inner cavity wall of the cutter head (18).

7. The offshore drilling platform with high stability according to claim 1, characterized in that: The expansion assembly (30) further comprises four groups of limit frames (31), the four groups of limit frames (31) being fixedly connected to the four corners of the lower end of the workbench (10), and the outer rings of the limit frames (31) being slidably connected to the lifting frames (32), the four groups of expansion plates (33) being rotatably connected to the upper ends of the four groups of lifting frames (32), and the lower ends of the expansion plates (33) being fixedly connected to the side away from the workbench (10) with the fixing pins (34).

8. The offshore drilling platform with high stability according to claim 1, characterized in that: The expansion assembly (30) further includes eight groups of reinforcement plates (35), which are respectively fixedly connected to the four corners of the upper end of the workbench (10), and the lower ends of the eight groups of reinforcement plates (35) are all in contact with the upper end of the expansion plate (33).

9. The offshore drilling platform with high stability according to claim 7, characterized in that: The driving assembly (40) further includes a blocking block (44), the blocking block (44) being fixedly connected to the outer ring of the pull rope three (43), and the blocking block (44) being arranged below the lifting frame (32).

10. The offshore drilling platform with high stability according to claim 7, characterized in that: One end of the second pull rope (42) extending from the winch (41) passes through the workbench (10) and is fixedly connected to the middle of the upper end of the expansion plate (33), while one end of the third pull rope (43) extending from the winch (41) passes through the workbench (10) and surrounds the lower end of the limit frame (31), then passes upward through the lifting frame (32) and is fixedly connected to the middle of the lower end of the expansion plate (33).

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