Offshore drilling platform and working method suitable for intertidal operations

Abstract

The present invention belongs to the technical field of drilling platforms, and specifically relates to an offshore drilling platform suitable for intertidal operations and a working method, comprising a main body, the lower end of which is provided with a support and a sliding column; a lifting platform assembly, the lifting platform assembly including a berthing platform, the berthing platform being provided with a pull rope; a floating assembly, the floating assembly including a mounting column, the lower end of the trigger plate being fixedly connected to a floating rod, the inner cavity of the mounting column being provided with a lowering switch and an raising switch; a fixing assembly, the fixing assembly including a fixing rod, the inner cavity of the mounting column being provided with two sets of clamping plates, and the inner circles of the two sets of clamping plates are both in contact with the outer side of the fixing rod. The invention enables the device to automatically adjust its height according to the fluctuation of the tide, and to switch arbitrarily between the adjustment state and the fixed state, thereby avoiding frequent lifting and lowering of the device due to large wave fluctuations, and can also drive the main body to the highest height in an emergency.

Description

Technical Field

[0001] The present invention belongs to the technical field of drilling platforms, and in particular relates to an offshore drilling platform suitable for intertidal operations and a working method. Background Art

[0002] The intertidal zone, a key area where land and sea interact, holds significant value for resource exploration and engineering geology. However, this area experiences daily tidal inundation and resurfacing, and the complex nature of the seabed sediments present challenges for traditional drilling platforms, including insufficient stability, limited operating windows, and significant safety risks.

[0003] Specifically, the intertidal zone is affected by astronomical tides, storm surges, and seabed topography, and the dynamic changes in water levels show multi-scale fluctuation characteristics. Traditional platform lifting and lowering rely on pre-calculated tide tables or manual water level observations. These observation methods usually do not take into account meteorological tide disturbances. There may be errors between the actual water level and the forecast, which can lead to flooding of the platform deck or hanging of the pile legs, causing instability or damage to the equipment on the platform, posing a safety hazard and affecting the normal operation.

[0004] Secondly, the traditional steel gangway is fixed in position, and changes in the sea tide level will cause a large height difference between the end of the gangway and the shore or transport ship. When transporting materials or personnel, this height difference greatly affects the normal transportation of materials, and also causes the risk of falling to increase sharply when personnel move, posing a safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to provide an offshore drilling platform and working method suitable for intertidal operations, which can enable the device to automatically adjust its height according to the fluctuation of the tide and switch between the adjustment state and the fixed state at will, so as to avoid frequent lifting and lowering of the device due to large wave fluctuations. It can also drive the main body to be lifted to the highest height in an emergency.

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

[0007] An offshore drilling platform suitable for intertidal operations, comprising:

[0008] A main body, a support pillar being fixedly mounted on the lower end of the main body, and a sliding column being slidably connected to the inner cavity of the support pillar;

[0009] A lifting platform assembly, the lifting platform assembly includes a docking platform, the docking platform is arranged on the outside of the main body, and a pull rope is arranged inside the docking platform;

[0010] A floating assembly comprising a mounting post, an inner cavity of which is provided with a trigger plate, a floating rod being fixedly connected to the lower end of the trigger plate, and a lowering switch and an raising switch being respectively mounted at the upper and lower ends of the trigger plate within the inner cavity of the mounting post;

[0011] A fixing assembly, the fixing assembly including a fixing rod fixedly connected to the upper end of the trigger plate, the inner cavity of the mounting column being provided with two sets of clamping plates, and the inner rings of the two sets of clamping plates are both in contact with and connected to the outer side of the fixing rod;

[0012] When the floating rod rises and falls with the water level, it drives the trigger plate to contact the lowering switch or the raising switch, thereby controlling the sliding column to retract or extend;

[0013] The two groups of clamping plates are used to clamp the fixing rod, thereby fixing the trigger plate and the floating rod.

[0014] In a preferred embodiment, a plurality of warehouses are fixedly mounted on the upper end of the inner cavity of the main body.

[0015] In a preferred embodiment, the outer ring of the lower end of the sliding column is fixedly connected to a stabilizing plate, the upper end of the inner cavity of the pillar is fixedly installed with a hydraulic rod, and the lower end of the hydraulic rod is fixedly connected to the upper end of the sliding column.

[0016] In a preferred embodiment, the inner ring of the lower end of the pillar is fixedly connected to a ring scraper, and the inner ring of the lower end of the ring scraper is in contact with the outer ring of the sliding column.

[0017] In a preferred embodiment, the lifting platform assembly also includes a base plate, which is fixedly connected to the lower end of the docking platform, and the lower end of the base plate is fixedly connected to an air cushion 1, and the lower end of the main body is fixedly connected to a bracket, and the docking platform and the base plate are slidably connected to the outer ring of the bracket, and two groups of hoisting machines are fixedly installed on the upper end of the main body, and two groups of pull ropes 1 are provided, which are respectively fixedly connected to the base plate and the docking platform, and the upper ends of the two groups of pull ropes 1 are fixedly connected to the inner ring of the hoist.

[0018] In a preferred embodiment, the floating assembly also includes a mounting box, which is fixedly connected to the lower end of the main body, and the upper end of the mounting column is fixedly connected to the lower end of the mounting box, the outer ring of the middle section of the mounting column is fixedly connected to a wave-breaking plate, the lower end of the wave-breaking plate is arranged at the lower end of the mounting column, and the upper end of the wave-breaking plate is provided with a ventilation port.

[0019] In a preferred embodiment, a center-shaped groove is provided at the lower end of the mounting column, and the trigger plate is slidably connected in the groove, the upper end of the floating rod is fixedly connected to the lower end of the trigger plate, and the lower end of the floating rod extends out of the center-shaped groove and is placed at the lower end of the mounting column, the floating assembly also includes a second air cushion, and the second air cushion is fixedly connected to the lower end of the floating rod, the lowering switch is provided in two groups, which are respectively installed at the lower ends of both sides of the inner cavity of the center-shaped groove, and the raising switch is also provided in two groups, which are respectively installed at the upper ends of both sides of the inner cavity of the center-shaped groove.

[0020] In a preferred embodiment, the upper end of the fixing rod is slidably connected to the middle part of the inner cavity of the mounting column, and the fixing assembly also includes two groups of limiting rods, which are respectively fixedly connected to the left and right sides of the inner cavity of the mounting column, and the lower ends of the two groups of clamping plates are respectively slidably connected to the outer rings of the two groups of limiting rods, and the lower ends of the two groups of clamping plates are fixedly connected to springs, and the springs are sleeved on the outer rings of the limiting rods, and the other end of the springs are fixedly connected to the inner cavity of the mounting column.

[0021] In a preferred embodiment, the fixing assembly also includes an electric push rod, which is fixedly mounted on the upper end of the inner cavity of the mounting column, and a lifting plate is fixedly connected to the output end of the electric push rod, and the lifting plate is slidably connected to the middle of the inner cavity of the mounting column. The left and right sides of the lower end of the lifting plate are fixedly connected to a pull rope 2, and the lower ends of the two groups of pull ropes 2 respectively pass through the mounting column and are fixedly connected to the upper end inner cavity of the two groups of clamping plates.

[0022] A working method for an offshore drilling platform suitable for intertidal operations, used for any of the above-mentioned offshore drilling platforms suitable for intertidal operations, comprising:

[0023] S1: Opening control: The two sets of clamping plates loosen their grip on the fixed rod, allowing the trigger plate to be raised or lowered at will;

[0024] S2: Lift and lower with water level: When the sea level is high, the floating rod rises, pushing the trigger plate upward, causing the trigger plate to touch the up switch. At this time, the sliding column extends outward, pushing the main body up. When the sea level is low, the floating rod loses its buoyancy and falls downward, causing the trigger plate to touch the down switch. At this time, the sliding column retracts inward, causing the main body to lower.

[0025] S3: Fixed Height: When the main body reaches the appropriate height, the upper and lower ends of the trigger plate are no longer in contact with the lowering or raising switch. To prevent the device from being frequently raised or lowered by the influence of waves, the two sets of clamping plates are controlled to fix the fixing rod. At this time, the trigger plate cannot rise or fall freely and thus cannot touch the switch, and the main body can be fixed at the specified height.

[0026] S4: Connecting personnel: Under normal conditions, the pull rope is relaxed freely, so that the mooring platform rises and falls with the water level. When connecting personnel, after the personnel walk onto the mooring platform, the pull rope is retracted and the mooring platform is lifted to be parallel to the main body.

[0027] The beneficial effects achieved by the present invention are:

[0028] The lifting platform assembly of the present invention enables the mooring platform to rise and fall with the height of the sea surface under normal conditions, and to be pulled up when carrying people, thereby facilitating the flow of people. Under normal conditions, the mooring platform always rises and falls with the tidal fluctuations of the sea surface, so that its lower end is always above the sea surface, facilitating the docking of ships. When carrying people, the driving part of the lifting platform assembly pulls the pull rope to raise the mooring platform to be parallel to the main body, so that people on the mooring platform can enter the main body, thereby improving the portability of personnel flow.

[0029] The floating assembly and sliding column of the present invention enable the device to automatically adjust its height according to the fluctuation of the tide. When in use, the floating rod floats on the sea surface. If the sea surface fluctuates due to the tide, the floating rod will rise and fall with the trigger plate, causing the trigger plate to touch either the lowering switch or the raising switch. When rising, it touches the raising switch, and when descending, it touches the lowering switch. This controls the sliding column to extend or retract, driving the main body to rise or fall, so that the device can automatically adjust its height according to the fluctuation of the tide.

[0030] The fixed assembly and floating assembly of the present invention can switch the device between the adjustment state and the fixed state, avoiding frequent lifting and lowering of the device due to large wave fluctuations, and can also drive the main body to the highest height in an emergency; after the height adjustment is completed, the driving component of the fixed assembly will rise, pulling the two sets of clamping plates close to each other to clamp and fix the fixed rod, thereby limiting the lifting of the floating rod and keeping the device in a stable state. If an emergency occurs, such as when the water level is too high and the floating rod and the mounting column are submerged, the liquid will push the floating rod to forcibly rise, forcing the trigger plate to contact the lifting switch until the main body is lifted to the highest position. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a bottom view schematic diagram of the lifting platform assembly of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the docking platform in the present invention;

[0034] Figure 4 It is a cross-sectional schematic diagram of the pillar in the present invention;

[0035] Figure 5 It is a schematic diagram of the position of the floating component in the present invention;

[0036] Figure 6 is a schematic cross-sectional view of the floating assembly of the present invention;

[0037] Figure 7 This is a split rendering of the mounting column and the trigger plate in the present invention;

[0038] Figure 8 It is a schematic diagram of the position of the fixed component in the present invention;

[0039] Figure 9 is a schematic cross-sectional view of the fixing assembly of the present invention;

[0040] Figure 10 It is a structural schematic diagram of the clamping plate in the present invention.

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

[0042] 10. Main body; 11. Warehouse; 12. Pillar; 13. Sliding column; 14. Stabilizing plate; 15. Hydraulic rod; 16. Annular scraper; 20. Lifting platform assembly; 21. Mooring platform; 22. Bottom plate; 23. Air cushion 1; 24. Bracket; 25. Pull rope 1; 26. Hoist; 30. Floating assembly; 31. Mounting box; 32. Mounting column; 33. Wave breakers; 34. Vent; 35. Trigger plate; 36. Floating rod; 37. Air cushion 2; 38. Lowering switch; 39. Raising switch; 40. Fixing assembly; 41. Fixing rod; 42. Clamping plate; 43. Limiting rod; 44. Spring; 45. Electric push rod; 46. Lifting plate; 47. Pull rope 2. 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] Example 1: Please refer to the attached Figures 1 to 4 , Figures 7 and 8 FIG. 1 is a first embodiment of the present invention, which provides an offshore drilling platform suitable for intertidal operations, comprising:

[0048] The main body 10 has a support column 12 fixedly mounted on its lower end, and a sliding column 13 is slidably connected to the inner cavity of the support column 12;

[0049] The lifting platform assembly 20 includes a docking platform 21, which is arranged outside the main body 10, and a pull rope 25 is arranged inside the docking platform 21;

[0050] The floating assembly 30 includes a mounting post 32. A trigger plate 35 is disposed within the interior of the mounting post 32. A floating rod 36 is fixedly connected to the lower end of the trigger plate 35. A lowering switch 38 and an raising switch 39 are mounted within the interior of the mounting post 32 at the upper and lower ends of the trigger plate 35, respectively.

[0051] The fixing assembly 40 includes a fixing rod 41 fixedly connected to the upper end of the trigger plate 35. The inner cavity of the mounting column 32 is provided with two sets of clamping plates 42, and the inner rings of the two sets of clamping plates 42 are both in contact with the outer side of the fixing rod 41;

[0052] When the floating rod 36 rises and falls with the water level, it drives the trigger plate 35 to contact the lowering switch 38 or the raising switch 39, controlling the sliding column 13 to retract or extend;

[0053] The two sets of clamping plates 42 are used to clamp the fixing rod 41 , thereby fixing the trigger plate 35 and the floating rod 36 .

[0054] It should be noted that, in order to ensure the normal use of the device, a crane, drilling equipment, platform, mud pump and other devices suitable for drilling operations and normal operation of the platform can be installed on the upper end of the main body 10.

[0055] In this embodiment, when the height of the main body 10 needs to be adjusted, the fixing assembly 40 drives the two sets of clamping plates 42 to loosen the fixing rod 41, thereby releasing the floating rod 36 from its position. The floating rod 36 then rises or descends according to the sea level, driving the trigger plate 35 to slide up and down within the inner cavity of the mounting post 32. When the floating rod 36 rises with the sea level, the trigger plate 35 rises and contacts the raising switch 39. At this point, the control system electrically connected to the raising switch 39 receives the signal and drives the sliding post 13 to extend outward, thereby raising the main body 10. Conversely, when the sea level drops, causing the floating rod 36 to fall, the trigger plate 35 descends and contacts the lowering switch 38, causing the sliding post 13 to retract inward, lowering the main body 10. Once the height adjustment is complete, the fixing assembly 40 again drives the clamping plates 42 to clamp the fixing rod 41. This restricts the rising and falling of the floating rod 36, stabilizing the height of the main body 10. Under normal conditions, the docking platform 21 rises and falls freely with the sea level, ensuring that its lower end is always close to the sea surface, facilitating docking for transport vessels or ferry boats. To dock personnel or supplies, the platform assembly 20 pulls rope 1 25, raising the docking platform 21 and the personnel or supplies aboard to a height parallel to the main body 10, facilitating their entry. After the transfer is complete, the platform assembly 20 releases rope 1 25, and the docking platform 21 rises and falls again with the sea level, awaiting the next docking mission.

[0056] Next, please refer to Figures 1 to 2 and Figure 4 , a plurality of warehouses 11 are fixedly installed on the upper end of the inner cavity of the main body 10;

[0057] The outer ring of the lower end of the sliding column 13 is fixedly connected to a stabilizing plate 14, and the upper end of the inner cavity of the support 12 is fixedly installed with a hydraulic rod 15, and the lower end of the hydraulic rod 15 is fixedly connected to the upper end of the sliding column 13;

[0058] The inner ring of the lower end of the support column 12 is fixedly connected to an annular scraper 16 , and the inner ring of the lower end of the annular scraper 16 is in contact with the outer ring of the sliding column 13 .

[0059] It should be noted that four groups of pillars 12 are provided at the lower end of the main body 10, and the inner cavities of the four groups of pillars 12 are all installed with hydraulic rods 15, and the four groups of hydraulic rods 15 are controlled by the electronic control components connected in series, in order to ensure that the four groups of hydraulic rods 15 and the sliding column 13 can operate simultaneously to ensure stability;

[0060] The annular scraper 16 is a cylindrical blade, and the edge of the scraper is in contact with the surface of the sliding post 13 to prevent impurities from adhering to the surface of the sliding post 13 and affecting the lifting of the main body 10 .

[0061] In this embodiment, during use, the hydraulic rod 15 pushes the sliding post 13 to smoothly extend or retract within the inner cavity of the support 12, thereby driving the main body 10 to rise and fall. When the sliding post 13 retracts, the annular scraper 16 scrapes along the outer ring of the sliding post 13, removing impurities adhering to the surface of the sliding post 13, ensuring smooth operation of the sliding post 13 while also protecting the inner wall of the support 12 from damage.

[0062] Next, please refer to Figures 2 to 3 The lifting platform assembly 20 also includes a base plate 22, which is fixedly connected to the lower end of the docking platform 21, and the lower end of the base plate 22 is fixedly connected to an air cushion 23. The lower end of the main body 10 is fixedly connected to a bracket 24, and the docking platform 21 and the base plate 22 are slidably connected to the outer ring of the bracket 24. Two sets of hoists 26 are fixedly installed on the upper end of the main body 10, and two groups of pull ropes 25 are provided, which are respectively fixedly connected to the base plate 22 and the docking platform 21, and the upper ends of the two groups of pull ropes 25 are fixedly connected to the inner ring of the hoist 26.

[0063] It should be noted that both sets of hoisting machines 26 are motors for hoisting, and the two sets of hoisting machines 26 are connected in series so that the two sets of hoisting machines 26 can operate simultaneously, so that the two sets of pull ropes 25 can operate synchronously, avoiding the two sets of pull ropes 25 operating separately and affecting the stability of the berthing platform 21;

[0064] The connection between the docking platform 21 and the bracket 24 is rounded to improve the stability of the docking platform 21 when it is raised and lowered;

[0065] The pull rope 25 is made of a high-strength, corrosion-resistant material, such as a steel wire rope;

[0066] The air cushion 1 23 is an air bag made of corrosion-resistant rubber material, which is evenly distributed at the lower end of the bottom plate 22 and is intended to improve the buoyancy and stability of the mooring platform 21.

[0067] In this embodiment, under normal conditions, the berthing platform 21, relying on the buoyancy of the base plate 22 and air cushion 1 23, rises and falls with the sea level, keeping the lower end of the berthing platform 21 close to the sea surface, facilitating docking for transport vessels or ferry boats. When personnel or cargo needs to be docked, two sets of hoists 26 are activated synchronously, pulling the pull rope 1 25 to smoothly raise the berthing platform 21 and the personnel or cargo aboard it to a height parallel to the main body 10, facilitating the transfer of personnel or cargo. Once the transfer is complete, the hoists 26 release the pull rope 1 25, and the berthing platform 21, relying on the buoyancy of the base plate 22 and air cushion 1 23, rises and falls freely with the sea level again, awaiting the next docking mission.

[0068] Next, please refer to Figures 4 to 7The floating assembly 30 further includes a mounting box 31, which is fixedly connected to the lower end of the main body 10, and the upper end of the mounting column 32 is fixedly connected to the lower end of the mounting box 31. A wave breaking plate 33 is fixedly connected to the outer ring of the middle section of the mounting column 32. The lower end of the wave breaking plate 33 is arranged at the lower end of the mounting column 32, and a vent 34 is opened at the upper end of the wave breaking plate 33.

[0069] A center-shaped groove is provided at the lower end of the mounting column 32, and a trigger plate 35 is slidably connected in the groove. The upper end of the floating rod 36 is fixedly connected to the lower end of the trigger plate 35, and the lower end of the floating rod 36 extends out of the center-shaped groove and is placed at the lower end of the mounting column 32. The floating assembly 30 also includes a second air cushion 37, which is fixedly connected to the lower end of the floating rod 36. Two groups of lowering switches 38 are provided, which are respectively installed at the lower ends of both sides of the inner cavity of the center-shaped groove, and two groups of raising switches 39 are also provided, which are respectively installed at the upper ends of both sides of the inner cavity of the center-shaped groove.

[0070] It should be noted that the wave breakers 33 are conical in structure and are sleeved on the outer rings of the mounting posts 32 and the floating rods 36. The purpose is to use the wave breakers 33 to block the waves so that when the waves are large, the sea surface inside the wave breakers 33 can remain relatively quiet compared to the sea surface outside.

[0071] The lower end of the trigger plate 35 is inclined, and the lower end of the middle-shaped groove is also inclined, and the two inclined surfaces fit together to prevent a large amount of impurities from accumulating at the lower end of the inner cavity of the mounting post 32, which would affect the stability of the trigger.

[0072] The second air cushion 37 is a corrosion-resistant rubber airbag, which is designed to enable the floating rod 36 to rise and fall with the rise and fall of the sea level;

[0073] The raising switch 39 and the lowering switch 38 are both devices for controlling the raising and lowering of the hydraulic rod 15 , and are intended to drive the hydraulic rod 15 to extend or retract when the raising switch 39 or the lowering switch 38 is touched.

[0074] In this embodiment, when the height of the main body 10 needs to be adjusted, the floating rod 36 is freely raised and lowered on the sea surface by means of the air cushion 2 37. When the sea level rises, driving the floating rod 36 upward, the trigger plate 35 rises accordingly and contacts the raising switch 39. At this time, the control system receives a signal and drives the hydraulic rod 15 to extend, pushing the sliding column 13 to extend, thereby driving the main body 10 to rise. Conversely, when the sea level drops, causing the floating rod 36 to descend, the trigger plate 35 also descends and contacts the lowering switch 38. After receiving the signal, the control system drives the hydraulic rod 15 to retract, driving the sliding column 13 to retract, and the main body 10 to descend accordingly. The provision of the wave breakers 33 effectively blocks the waves, reduces the impact of the waves on the floating rod 36, and ensures the stability of the height adjustment of the main body 10. In addition, the provision of the air vents 34 ensures the balance of air pressure inside and outside the wave breakers 33, preventing damage to the wave breakers 33 due to air pressure differences.

[0075] Please refer again Figures 7 to 10 The upper end of the fixing rod 41 is slidably connected to the middle part of the inner cavity of the mounting column 32. The fixing assembly 40 also includes two sets of limiting rods 43, which are respectively fixedly connected to the left and right sides of the inner cavity of the mounting column 32, and the lower ends of the two sets of clamping plates 42 are respectively slidably connected to the outer rings of the two sets of limiting rods 43. The lower ends of the two sets of clamping plates 42 are fixedly connected to springs 44, and the springs 44 are sleeved on the outer rings of the limiting rods 43, and the other ends of the springs 44 are fixedly connected to the inner cavity of the mounting column 32.

[0076] The fixing assembly 40 also includes an electric push rod 45, which is fixedly mounted on the upper end of the inner cavity of the mounting column 32, and a lifting plate 46 is fixedly connected to the output end of the electric push rod 45. The lifting plate 46 is slidably connected to the middle of the inner cavity of the mounting column 32, and the left and right sides of the lower end of the lifting plate 46 are fixedly connected to a pull rope 2 47. The lower ends of the two groups of pull ropes 2 47 respectively pass through the mounting column 32 and are fixedly connected to the upper end inner cavity of the two groups of clamping plates 42.

[0077] It should be noted that the two sets of clamping plates 42 are provided with arc grooves on the sides close to each other, and the inner diameter of the arc grooves is adapted to the outer diameter of the fixing rod 41. At the same time, the two sets of clamping plates 42 are fixedly connected to the sides close to each other with anti-slip plates.

[0078] The upper ends of the two sets of clamping plates 42 are each provided with a groove, and the lower end of the second pull rope 47 is disposed in the groove. This is intended to ensure that the second pull rope 47 remains in the groove when the clamping plates 42 are moved, thereby avoiding damage to the second pull rope 47.

[0079] Here, in order to make the device have a certain emergency function, it should be ensured that the force of the clamping plate 42 clamping the fixed rod 41 is limited, and can only maintain the fixed rod 41 and the floating rod 36 in a suspended state without falling. When the sea level is too high and the floating rod 36 and the air cushion 37 are submerged too deep, the buoyancy of the deep water area can be used to push the floating rod 36 and the fixed rod 41 to rise, forcing the trigger plate 35 to contact the lifting switch 39, and urgently lifting the main body 10 to the highest height.

[0080] In this embodiment, when the lifting and lowering of the main body 10 needs to be stopped, the electric push rod 45 retracts, pulling the lifting plate 46 upward. Simultaneously, the lifting plate 46 moves, and the two sets of clamping plates 42 slide toward the center along the outer ring of the limit rod 43 via the second pull rope 47. As the clamping plates 42 move, they compress the spring 44, causing it to contract until the inner rings of the two sets of clamping plates 42 clamp the fixed rod 41. At this point, the lifting and lowering of the floating rod 36 is restricted, and the height of the main body 10 is stabilized. To adjust the height of the main body 10 again, the electric push rod 45 extends, pushing the lifting plate 46 downward. Simultaneously, the lifting plate 46 moves, and the second pull rope 47 releases the tension on the two sets of clamping plates 42. At this point, the spring 44 returns from its contracted state, pushing the two sets of clamping plates 42 outward along the outer ring of the limit rod 43 until the inner rings of the two sets of clamping plates 42 separate from the outer side of the fixed rod 41, releasing the clamping force on the fixed rod 41 and, in turn, releasing the restriction on the lifting and lowering of the floating rod 36.

[0081] Example 2: A working method for an offshore drilling platform suitable for intertidal operations, used for the above-mentioned offshore drilling platform suitable for intertidal operations, comprising:

[0082] S1: Opening and regulating: The two sets of clamping plates 42 loosen their grip on the fixed rod 41, allowing the trigger plate 35 to be raised or lowered at will;

[0083] S2: Lift and lower with water level: When the sea level is high, the floating rod 36 rises, pushing the trigger plate 35 upward, causing the trigger plate 35 to touch the up switch 39. At this time, the sliding column 13 extends outward, pushing the main body 10 up. When the sea level is low, the floating rod 36 loses its buoyancy and falls downward, causing the trigger plate 35 to touch the down switch 38. At this time, the sliding column 13 retracts inward, causing the main body 10 to lower.

[0084] S3: Fixing the height: When the main body 10 reaches the appropriate height, the upper and lower ends of the trigger plate 35 are no longer in contact with the lowering switch 38 or the raising switch 39. To prevent the device from being frequently raised or lowered by the influence of waves, the two sets of clamping plates 42 are controlled to fix the fixing rod 41. At this time, the trigger plate 35 cannot rise or fall freely and thus cannot touch the switch, and the main body 10 can be fixed at the specified height.

[0085] S4: docking personnel: under normal conditions, the pull rope 25 is freely relaxed, so that the mooring platform 21 rises and falls with the water level. When docking personnel, after the personnel walk onto the mooring platform 21, the pull rope 25 is retracted and the mooring platform 21 is lifted to be parallel to the main body 10.

[0086] In this embodiment, in order to avoid the S3 program from still being carried out when the sea level is too high, the force of clamping the fixed rod 41 in the S3 program should be controlled so that when the floating rod 36 and the trigger plate 35 are submerged too deeply by the sea water, the buoyancy can be used to forcibly push the fixed rod 41 to rise, thereby forcibly starting the lifting process in the S2 program until the main body 10 rises to the highest height.

[0087] The working principle of the present invention is as follows: when the height of the main body 10 needs to be adjusted, the electric push rod 45 extends, pushing the lifting plate 46 to slide downward, loosening the pull rope 2 47, causing the two sets of clamping plates 42 to slide outward, releasing the clamping of the fixed rod 41, and then the floating rod 36 relies on the air cushion 2 37 to freely rise and fall on the sea surface. When the sea level rises, driving the floating rod 36 to rise, the trigger plate 35 rises accordingly and contacts the raising switch 39. At this time, the control system receives a signal and drives the hydraulic rod 15 to extend, pushing the sliding column 13 to extend, thereby driving the main body 10 to rise. Conversely, when the sea level drops and causes the floating rod 36 to drop, the trigger plate 35 drops accordingly and contacts the lowering switch 38. After receiving the signal, the control system drives the hydraulic rod 15 to retract, driving the sliding column 13 to retract, and the main body 10 drops accordingly. When the lifting and lowering of the main body 10 needs to be stopped, the electric push rod 45 retracts, pulling the lifting plate 46 to slide upward, pulling the pull rope 2 47 and the two sets of clamping plates 42 to slide toward the center of the limit rod 43 until the fixed rod 41 is clamped and fixed. At this time, the lifting and lowering of the floating rod 36 is restricted, and the height of the main body 10 is stabilized. Under normal conditions, the berthing platform 21 floats on the sea surface relying on the bottom plate 22 and the air cushion 1 23, making it convenient for transport ships or traffic ships to dock. When it is necessary to connect personnel or transport materials, the two sets of hoists 26 will start synchronously, pulling the pull rope 1 25, and smoothly lifting the berthing platform 21 and the personnel or materials on it to a height parallel to the main body 10, facilitating the transfer of personnel or materials.

[0088] 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. An offshore drilling platform suitable for intertidal operations, comprising a main body (10), a lifting platform assembly (20), a floating assembly (30) and a fixed assembly (40), characterized in that: A main body (10), wherein a support column (12) is fixedly mounted on the lower end of the main body (10), and a sliding column (13) is slidably connected to the inner cavity of the support column (12); A lifting platform assembly (20), the lifting platform assembly (20) includes a docking platform (21), the docking platform (21) is arranged outside the main body (10), and a pull rope (25) is arranged inside the docking platform (21); A floating assembly (30), the floating assembly (30) comprising a mounting post (32), an inner cavity of the mounting post (32) being provided with a trigger plate (35), a lower end of the trigger plate (35) being fixedly connected to a floating rod (36), and a lowering switch (38) and an raising switch (39) being respectively installed at upper and lower ends of the trigger plate (35) in the inner cavity of the mounting post (32); A fixing assembly (40), the fixing assembly (40) comprising a fixing rod (41), the fixing rod (41) being fixedly connected to the upper end of the trigger plate (35), the inner cavity of the mounting column (32) being provided with two groups of clamping plates (42), and the inner rings of the two groups of clamping plates (42) being in contact with and connected to the outer side of the fixing rod (41); When the floating rod (36) rises and falls with the water level, it drives the trigger plate (35) to contact the lowering switch (38) or the raising switch (39), thereby controlling the sliding column (13) to retract or extend; The two sets of clamping plates (42) are used to clamp the fixing rod (41), thereby fixing the trigger plate (35) and the floating rod (36); The lower end of the mounting column (32) is provided with a center-shaped groove, and the trigger plate (35) is slidably connected in the groove. The upper end of the floating rod (36) is fixedly connected to the lower end of the trigger plate (35), and the lower end of the floating rod (36) extends out of the center-shaped groove and is placed at the lower end of the mounting column (32). The floating assembly (30) further includes an air cushion (37) which is fixedly connected to the lower end of the floating rod (36). The lowering switch (38) is provided in two groups and is respectively installed at the lower ends of both sides of the inner cavity of the center-shaped groove, and the raising switch (39) is also provided in two groups and is respectively installed at the upper ends of both sides of the inner cavity of the center-shaped groove. The fixing assembly (40) also includes an electric push rod (45), which is fixedly mounted on the upper end of the inner cavity of the mounting column (32), and a lifting plate (46) is fixedly connected to the output end of the electric push rod (45), and the lifting plate (46) is slidably connected to the middle part of the inner cavity of the mounting column (32). The lower ends of the lifting plate (46) are fixedly connected to the left and right sides of the lower end of the lifting plate (46), and the lower ends of the two groups of the pull ropes (47) respectively pass through the mounting column (32) and are fixedly connected to the upper inner cavities of the two groups of clamping plates (42).

2. The offshore drilling platform suitable for intertidal operations according to claim 1, characterized in that: A plurality of warehouses (11) are fixedly mounted on the upper end of the inner cavity of the main body (10).

3. The offshore drilling platform suitable for intertidal operations according to claim 2, characterized in that: The outer ring of the lower end of the sliding column (13) is fixedly connected to a stabilizing plate (14), the upper end of the inner cavity of the support (12) is fixedly installed with a hydraulic rod (15), and the lower end of the hydraulic rod (15) is fixedly connected to the upper end of the sliding column (13).

4. The offshore drilling platform suitable for intertidal operations according to claim 3, characterized in that: The inner ring of the lower end of the pillar (12) is fixedly connected to an annular scraper (16), and the inner ring of the lower end of the annular scraper (16) is in contact with the outer ring of the sliding column (13).

5. The offshore drilling platform suitable for intertidal operations according to claim 4, characterized in that: The lifting platform assembly (20) further includes a base plate (22), the base plate (22) being fixedly connected to the lower end of the docking platform (21), the lower end of the base plate (22) being fixedly connected to an air cushion (23), the lower end of the main body (10) being fixedly connected to a bracket (24), the docking platform (21) and the base plate (22) being slidably connected to the outer ring of the bracket (24), two groups of hoists (26) being fixedly installed on the upper end of the main body (10), the pull rope (25) being provided with two groups, which are fixedly connected to the base plate (22) and the docking platform (21), respectively, and the upper ends of the two groups of pull ropes (25) being fixedly connected to the inner ring of the hoist (26).

6. The offshore drilling platform suitable for intertidal operations according to claim 5, characterized in that: The floating assembly (30) further includes a mounting box (31), the mounting box (31) being fixedly connected to the lower end of the main body (10), and the upper end of the mounting column (32) being fixedly connected to the lower end of the mounting box (31), a wave-breaking plate (33) being fixedly connected to the outer ring of the middle section of the mounting column (32), the lower end of the wave-breaking plate (33) being arranged at the lower end of the mounting column (32), and an air vent (34) being provided at the upper end of the wave-breaking plate (33).

7. The offshore drilling platform suitable for intertidal operations according to claim 6, characterized in that: The upper end of the fixing rod (41) is slidably connected to the middle of the inner cavity of the mounting column (32), and the fixing assembly (40) further includes two groups of limiting rods (43), the two groups of limiting rods (43) are fixedly connected to the left and right sides of the inner cavity of the mounting column (32), and the lower ends of the two groups of clamping plates (42) are slidably connected to the outer rings of the two groups of limiting rods (43), the lower ends of the two groups of clamping plates (42) are fixedly connected to springs (44), and the springs (44) are sleeved on the outer rings of the limiting rods (43), and the other end of the springs (44) are fixedly connected to the inner cavity of the mounting column (32).

8. A method for operating an offshore drilling platform suitable for intertidal operations, characterized by: An offshore drilling platform suitable for intertidal operations according to any one of claims 1 to 7, comprising: S1: Opening and regulating: the two sets of clamping plates (42) loosen the clamping of the fixed rod (41), so that the trigger plate (35) can be raised and lowered at will; S2: rise and fall with water level: when the sea level is high, the floating rod (36) rises, pushing the trigger plate (35) up, causing the trigger plate (35) to touch the rise switch (39), at which time the sliding column (13) extends outward, pushing the main body (10) up; when the sea level is low, the floating rod (36) loses its buoyancy and falls downward, causing the trigger plate (35) to touch the fall switch (38), at which time the sliding column (13) retracts inward, causing the main body (10) to fall; S3: Fixed height: When the main body (10) reaches a suitable height, the upper and lower ends of the trigger plate (35) are not in contact with the lowering switch (38) or the raising switch (39). To avoid the influence of waves causing the device to frequently rise and fall, the two sets of clamping plates (42) are controlled to fix the fixing rod (41). At this time, the trigger plate (35) cannot rise and fall freely, and thus cannot touch the switch, and the main body (10) can be fixed to the specified height; S4: Connecting personnel: Under normal conditions, the pull rope 1 (25) is freely relaxed, so that the berthing platform (21) rises and falls with the water level. When connecting personnel, after the personnel walk onto the berthing platform (21), the pull rope 1 (25) is retracted and the berthing platform (21) is lifted to be parallel to the main body (10).

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