Offshore drilling platform suitable for intertidal operation and working method

Abstract

The invention belongs to the technical field of drilling platforms, and particularly relates to an offshore drilling platform suitable for intertidal operation and a working method.The offshore drilling platform comprises a main body, and supporting columns and sliding columns are arranged at the lower end of the main body; the lifting platform assembly comprises a parking platform, and a first pull rope is arranged on the parking platform; the floating assembly comprises a mounting column, the lower end of the trigger plate is fixedly connected with a floating rod, and a descending switch and an ascending switch are mounted in an inner cavity of the mounting column; and the fixing assembly comprises a fixing rod, two sets of clamping plates are arranged in an inner cavity of the mounting column, and inner rings of the two sets of clamping plates are both in contact connection with the outer side of the fixing rod. The height of the device can be automatically adjusted according to fluctuation of tides, the device can be freely switched between an adjusting state and a fixed state, frequent lifting of the device caused by large fluctuation of sea waves is avoided, and the main body can be driven to be lifted to the highest height in an emergency.

Description

Technical Field

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

[0002] As a key area of land-sea interaction, the intertidal zone has great value in resource exploration and engineering geology. However, this area experiences periodic tidal inundation and exposure every day, and the characteristics of submarine sediment are complex. Traditional drilling platforms face problems such as insufficient stability, limited operation windows, and prominent safety risks in this environment.

[0003] Specifically, first of all, affected by astronomical tides, storm surges, and the superposition of submarine topography, the water level in the intertidal zone shows multi-scale fluctuation characteristics in its dynamic change. The lifting of traditional platforms depends on pre-calculated tide tables or manual water level observations. These observation methods usually do not consider meteorological tide disturbances, and there may be errors between the actual water level and the forecast, which may lead to the platform deck being flooded or the pile legs being suspended, resulting in instability of the device or damage to the devices on the platform, posing safety hazards and affecting the normal progress of operations. Secondly, the position of the traditional steel gangway is fixed, and the change in the sea level will cause a large height difference between the end of the gangway and the shore base or the transportation ship. When transporting materials or personnel flow, this height difference greatly affects the normal transportation of materials, and also increases the risk of falling during personnel flow, posing safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to provide an offshore drilling platform suitable for intertidal operations and a working method thereof, which can enable the device to automatically adjust its height according to the rise and fall of the tide, and can arbitrarily switch between the adjustment state and the fixed state, avoiding frequent lifting of the device caused by large wave fluctuations, and can also drive the main body to rise to the highest height in case of emergency.

[0005] The technical solution adopted by the present invention is specifically as follows: An offshore drilling platform suitable for intertidal operations, comprising: A main body, a pillar is fixedly installed at the lower end of the main body, and a sliding column is slidably connected to the inner cavity of the pillar; A lifting platform assembly, the lifting platform assembly includes a mooring platform, the mooring platform is arranged outside the main body, and a first pulling rope is arranged inside the mooring platform; A floating assembly, the floating assembly includes a mounting column, a trigger plate is arranged in the inner cavity of the mounting column, a floating rod is fixedly connected to the lower end of the trigger plate, and a lowering switch and a raising switch are respectively installed at the positions above and below the trigger plate in the inner cavity of the mounting column; Fixing component, the fixing component includes a fixing rod, the fixing rod is fixedly connected to the upper end of the trigger plate, two groups of clamping plates are arranged in the inner cavity of the mounting column, and the inner circles of the two groups of clamping plates are in contact connection with the outer side of the fixing rod; Wherein, 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, and controls the sliding column to retract or extend; The two groups of clamping plates are used to clamp the fixing rod, thereby fixing the trigger plate and the floating rod.

[0006] In a preferred scheme, a plurality of storage rooms are fixedly installed at the upper end of the inner cavity of the main body.

[0007] In a preferred scheme, a stabilizing plate is fixedly connected to the outer circle of the lower end of the sliding column, a hydraulic rod is fixedly installed at the upper end of the inner cavity of the support column, and the lower end of the hydraulic rod is fixedly connected to the upper end of the sliding column.

[0008] In a preferred scheme, an annular scraper is fixedly connected to the inner circle of the lower end of the support column, and the inner circle of the lower end of the annular scraper is in contact connection with the outer circle of the sliding column.

[0009] In a preferred scheme, the lifting table assembly further includes a bottom plate, the bottom plate is fixedly connected to the lower end of the mooring platform, an air cushion I is fixedly connected to the lower end of the bottom plate, the lower end of the main body is fixedly connected to a support, the mooring platform and the bottom plate are slidably connected to the outer circle of the support, two lifting machines are fixedly installed at the upper end of the main body, two groups of pulling ropes I are provided, and are respectively fixedly connected to the bottom plate and the mooring platform, and the upper ends of the two groups of pulling ropes I are fixedly connected to the inner circle of the lifting machine.

[0010] In a preferred scheme, the floating assembly further includes an installation box, the installation box 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 installation box. A wave baffle is fixedly connected to the outer circle of the middle section of the mounting column, the lower end of the wave baffle is arranged at the lower end of the mounting column, and a ventilation opening is opened at the upper end of the wave baffle.

[0011] In a preferred scheme, a middle-shaped groove is opened 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 middle-shaped groove and is placed at the lower end of the mounting column. The floating assembly further includes an air cushion II, the air cushion II is fixedly connected to the lower end of the floating rod. Two groups of lowering switches are respectively installed at the lower ends of both sides of the inner cavity of the middle-shaped groove, and two groups of raising switches are also respectively installed at the upper ends of both sides of the inner cavity of the middle-shaped groove.

[0012] In a preferred embodiment, the upper end of the fixed rod is slidably connected to the middle of the inner cavity of the mounting column. The fixing assembly further includes two sets of limiting rods, which are respectively fixedly connected to the left and right sides of the inner cavity of the mounting column. The lower ends of the two clamping plates are respectively slidably connected to the outer circles of the two sets of limiting rods. Springs are fixedly connected to the lower ends of the two clamping plates, and the springs are sleeved on the outer circles of the limiting rods. The other ends of the springs are fixedly connected to the inner cavity of the mounting column.

[0013] In a preferred embodiment, the fixing assembly further includes an electric push rod. The electric push rod is fixedly installed at 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. The lifting plate is slidably connected to the middle of the inner cavity of the mounting column. Two second pull ropes are fixedly connected to the left and right sides of the lower end of the lifting plate. The lower ends of the two second pull ropes respectively penetrate through the mounting column and are fixedly connected to the upper inner cavities of the two clamping plates.

[0014] A working method of an offshore drilling platform suitable for intertidal operation, which is used for the offshore drilling platform suitable for intertidal operation described in any one of the above, includes: S1: Opening and regulation: The two clamping plates loosen the clamping of the fixed rod, so that the trigger plate can be lifted and lowered freely; S2: Lifting and lowering with the water level: When the sea level is high, the floating rod rises, pushing the trigger plate to rise, so that the trigger plate touches the up switch. At this time, the sliding column extends outwards, pushing the main body to rise. When the sea level is low, the floating rod loses the buoyancy support and falls down, so that the trigger plate touches the down switch. At this time, the sliding column retracts inwards, causing the main body to lower; S3: Fixing the height: When the main body reaches the appropriate height, neither the upper nor the lower ends of the trigger plate contact the down switch or the up switch. To avoid the influence of waves causing the device to lift and lower frequently, control the two clamping plates to fix the fixed rod. At this time, the trigger plate cannot lift and lower freely, and thus cannot touch the switch, and the main body can be fixed to the specified height; S4: Connecting personnel: In the normal state, the first pull rope is freely relaxed, so that the mooring platform rises and falls with the water level. When connecting personnel, after the personnel walk onto the mooring platform, the first pull rope runs and retracts, lifting the mooring platform to be parallel to the main body.

[0015] The beneficial effects achieved by the present invention are: The lifting platform assembly of the present invention can make the mooring platform rise and fall following the height of the sea surface in the normal state, and lift the mooring platform when carrying people, facilitating the flow of personnel; in the normal state, the mooring platform always rises and falls with the tidal fluctuations of the sea surface height, so that its lower end is always on the sea surface, facilitating ships to dock. When carrying people, the driving part of the lifting platform assembly will pull the first pull rope to lift the mooring platform to be parallel to the main body, so that the personnel entering the mooring platform can enter the main body, improving the portability of personnel flow; The floating component and sliding column of the present invention enable the device to automatically adjust its height according to the rise and fall of the tides. When in use, the floating rod floats on the sea surface. If the sea surface drives the floating rod to rise and fall due to the rise and fall of the tides, the floating rod will drive the trigger plate to rise and fall together. As a result, the trigger plate will touch one of the lowering switch or the raising switch. When rising, it touches the raising switch, and when descending, it touches the lowering switch. Then, it controls the extension or retraction of the sliding column, driving the main body to rise or fall, realizing the automatic adjustment of the device's height according to the rise and fall of the tides. The fixed component and floating component of the present invention enable the device to switch between the adjustment state and the fixed state, avoiding frequent lifting and lowering of the device caused by large fluctuations of the waves, and also enabling the main body to be lifted to the highest height in case of an emergency. After the height adjustment is completed, the driving component of the fixed component will rise, pulling the two clamping plates closer to clamp and fix the fixed rod, thereby restricting the lifting and lowering of the floating rod and making 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 rise forcibly, causing the trigger plate to come into forced contact with the raising switch until the main body is lifted to the highest position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the bottom view schematic diagram of the lifting platform component of the present invention; Figure 3 is the structural schematic diagram of the berthing platform of the present invention; Figure 4 is the cross-sectional schematic diagram of the pillar of the present invention; Figure 5 is the position schematic diagram of the floating component of the present invention; Figure 6 is the cross-sectional schematic diagram of the floating component of the present invention; Figure 7 is the disassembled effect diagram of the mounting column and the trigger plate of the present invention; Figure 8 is the position schematic diagram of the fixed component of the present invention; Figure 9 is the cross-sectional schematic diagram of the fixed component of the present invention; Figure 10 is the structural schematic diagram of the clamping plate of the present invention.

[0017] In the drawings, the list of components represented by each reference numeral is as follows: 10. Main body; 11. Warehouse; 12. Support pillar; 13. Sliding column; 14. Stabilizing plate; 15. Hydraulic rod; 16. Ring scraper; 20. Lifting platform assembly; 21. Berthing platform; 22. Bottom plate; 23. Air cushion I; 24. Bracket; 25. Pulling rope I; 26. Hoisting machine; 30. Floating assembly; 31. Installation box; 32. Installation column; 33. Wave baffle; 34. Vent; 35. Trigger plate; 36. Floating rod; 37. Air cushion II; 38. Lower switch; 39. Raise switch; 40. Fixing assembly; 41. Fixing rod; 42. Clamping plate; 43. Limiting rod; 44. Spring; 45. Electric push rod; 46. Lifting plate; 47. Pulling rope II. Detailed implementation mode

[0018] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation modes of the present invention with reference to the accompanying drawings of the specification.

[0019] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Secondly, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures or characteristics that can be included in at least one implementation mode of the present invention. The phrase "in a preferred implementation mode" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively exclusive of other embodiments.

[0021] Furthermore, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structures will be enlarged locally not in accordance with the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0022] Embodiment 1: Please refer to the attached Figures 1 to 4 , Figures 7 to 8 As shown in the figure, it is the first embodiment of the present invention. This embodiment provides an offshore drilling platform suitable for intertidal operations, including: Main body 10, a support pillar 12 is fixedly installed at the lower end of the main body 10, and a sliding column 13 is slidably connected to the inner cavity of the support pillar 12; Lifting platform assembly 20, the lifting platform assembly 20 includes a berthing platform 21, the berthing platform 21 is arranged outside the main body 10, and a pulling rope I 25 is arranged inside the berthing platform 21; 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. 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; 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; 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 .

[0023] 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.

[0024] 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.

[0025] 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; A stabilizing plate 14 is fixedly connected to the outer circumference of the lower end of the sliding column 13. A hydraulic rod 15 is fixedly installed at the upper end of the inner cavity of the support column 12, and the lower end of the hydraulic rod 15 is fixedly connected to the upper end of the sliding column 13; An annular scraper 16 is fixedly connected to the inner circumference of the lower end of the support column 12, and the inner circumference of the lower end of the annular scraper 16 is in contact connection with the outer circumference of the sliding column 13.

[0026] It should be noted that four groups of support columns 12 are provided at the lower end of the main body 10, and hydraulic rods 15 are installed in the inner cavities of the four groups of support columns 12. The four groups of hydraulic rods 15 are controlled by a series-connected electronic control component, aiming to ensure that the four groups of hydraulic rods 15 and the sliding column 13 can operate simultaneously to ensure stability; The annular scraper 16 is a circular tube-shaped blade, and the cutting edge part of the scraper is attached to the surface of the sliding column 13, aiming to prevent impurities from adhering to the surface of the sliding column 13 and affecting the lifting of the main body 10.

[0027] In this embodiment, when in use, the hydraulic rod 15 pushes the sliding column 13 to smoothly extend or retract in the inner cavity of the support column 12, thereby driving the lifting of the main body 10. When the sliding column 13 retracts, the annular scraper 16 will scrape along the outer circumference of the sliding column 13 to remove the impurities attached to the surface of the sliding column 13, ensuring the smooth operation of the sliding column 13 and also protecting the inner wall of the support column 12 from damage.

[0028] Secondly, please refer to Figures 2 to 3 again. The lifting platform assembly 20 further includes a bottom plate 22. The bottom plate 22 is fixedly connected to the lower end of the berthing platform 21. An air cushion one 23 is fixedly connected to the lower end of the bottom plate 22. A support 24 is fixedly connected to the lower end of the main body 10. The berthing platform 21 and the bottom plate 22 are slidably connected to the outer circumference of the support 24. Two sets of hoisting machines 26 are fixedly installed at the upper end of the main body 10. Two sets of pulling ropes one 25 are provided, which are respectively fixedly connected to the bottom plate 22 and the berthing platform 21, and the upper ends of the two sets of pulling ropes one 25 are fixedly connected to the inner circumference of the hoisting machines 26.

[0029] It should be noted that both sets of hoisting machines 26 are hoisting motors, and the two sets of hoisting machines 26 are connected in series, aiming to enable the two sets of hoisting machines 26 to operate simultaneously, so that the two sets of pulling ropes one 25 can operate synchronously, avoiding the separate operation of the two sets of pulling ropes one 25 and affecting the stability of the berthing platform 21; The part where the berthing platform 21 is connected to the support 24 is made smooth, aiming to improve the stability of the lifting of the berthing platform 21; The pulling rope one 25 is made of a high-strength and corrosion-resistant material, such as a steel wire rope; The air cushion one 23 is an airbag made of corrosion-resistant rubber material, which is evenly distributed at the lower end of the bottom plate 22, aiming to improve the buoyancy and stability of the berthing platform 21.

[0030] In this embodiment, under normal conditions, the docking platform 21 relies on the buoyancy of the bottom plate 22 and the air cushion 23, and will rise and fall with the height of the sea surface, so that the lower end of the docking platform 21 always stays close to the sea surface, facilitating the docking of transport ships or traffic boats. When it is necessary to transfer personnel or transport materials, the two groups of hoisting machines 26 will be started synchronously to pull the first pull rope 25, and smoothly lift the docking platform 21 and the personnel or materials thereon to a height parallel to the main body 10, facilitating the transfer of personnel or materials. After the transfer is completed, the hoisting machine 26 relaxes the first pull rope 25, and the docking platform 21 again relies on the buoyancy of the bottom plate 22 and the air cushion 23 to freely rise and fall with the sea surface height, waiting for the next transfer task.

[0031] Secondly, please refer to Figures 4 to 7 again. The floating assembly 30 further includes an installation box 31. The installation box 31 is fixedly connected to the lower end of the main body 10, and the upper end of the installation column 32 is fixedly connected to the lower end of the installation box 31. A wave baffle 33 is fixedly connected to the outer circumference of the middle section of the installation column 32. The lower end of the wave baffle 33 is arranged at the lower end of the installation column 32, and a ventilation opening 34 is provided at the upper end of the wave baffle 33. A middle-shaped groove is provided at the lower end of the installation column 32, 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 middle-shaped groove and is placed at the lower end of the installation column 32. The floating assembly 30 further includes an air cushion 37. The air cushion 37 is fixedly connected to the lower end of the floating rod 36. Two sets of lowering switches 38 are respectively installed at the lower ends of both sides of the inner cavity of the middle-shaped groove, and two sets of lifting switches 39 are also respectively installed at the upper ends of both sides of the inner cavity of the middle-shaped groove.

[0032] It should be noted that the wave baffle 33 is of a conical structure, and the wave baffle 33 is sleeved on the outer circumference of the installation column 32 and the floating rod 36, aiming to use the wave baffle 33 to block the waves, so that when the sea waves are relatively large, the sea surface inside the wave baffle 33 can be relatively quiet compared to the external sea surface. The lower end position of the trigger plate 35 is of an inclined structure, and the lower end of the middle-shaped groove is also of an inclined structure, and the two inclined surfaces are mutually attached, so as to prevent a large amount of impurities from accumulating at the lower end of the inner cavity of the installation column 32 and affecting the stability of triggering. The air cushion 37 is an airbag made of corrosion-resistant rubber material, aiming to enable the floating rod 36 to rise and fall together with the rise and fall of the sea surface height. Both the lifting switch 39 and the lowering switch 38 are devices for controlling the lifting of the hydraulic rod 15, aiming to drive the hydraulic rod 15 to extend or contract when the lifting switch 39 or the lowering switch 38 is touched.

[0033] In this embodiment, when it is necessary to adjust the height of the main body 10, the floating rod 36 freely rises and falls on the sea surface by relying on the second air cushion 37. When the sea surface rises and drives the floating rod 36 to rise, the trigger plate 35 rises accordingly and contacts the ascending switch 39. At this time, the control system receives the signal and drives the hydraulic rod 15 to extend, pushing the sliding column 13 to extend, and then driving the main body 10 to rise. On the contrary, when the sea surface drops and causes the floating rod 36 to drop, the trigger plate 35 drops accordingly and contacts the descending switch 38. After the control system receives the signal, it drives the hydraulic rod 15 to contract, drives the sliding column 13 to retract, and the main body 10 drops accordingly. The setting of the wave baffle 33 effectively blocks the spray, reduces the influence of the sea wave on the floating rod 36, and ensures the stability of the height adjustment of the main body 10. In addition, the setting of the air vent 34 ensures the air pressure balance inside and outside the wave baffle 33, and avoids the damage of the wave baffle 33 caused by the air pressure difference.

[0034] Please refer to again Figures 7 to 10 , the upper end of the fixed rod 41 is slidably connected to the middle part of the inner cavity of the mounting column 32. The fixing assembly 40 further includes two groups of limiting rods 43. The two groups of limiting rods 43 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 groups of clamping plates 42 are respectively slidably connected to the outer circles of the two groups of limiting rods 43. The lower ends of the two groups of clamping plates 42 are fixedly connected with springs 44, and the springs 44 are sleeved on the outer circles 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; The fixing assembly 40 further includes an electric push rod 45. The electric push rod 45 is fixedly installed at 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 part of the inner cavity of the mounting column 32. The left and right sides of the lower end of the lifting plate 46 are fixedly connected with second ropes 47, and the lower ends of the two groups of second ropes 47 respectively penetrate through the mounting column 32 and are fixedly connected to the upper inner cavities of the two groups of clamping plates 42.

[0035] It should be noted that arc grooves are formed on the mutually approaching surfaces of the two groups of clamping plates 42, and the inner diameter of the arc grooves is adapted to the outer diameter of the fixed rod 41. At the same time, anti-slip plates are fixedly connected to the mutually approaching surfaces of the two groups of clamping plates 42; Grooves are formed at the upper ends of the two groups of clamping plates 42, and the lower ends of the second ropes 47 are arranged in the grooves, aiming to ensure that when the clamping plates 42 move, the second ropes 47 can still be in the grooves to avoid damage to the second ropes 47; Here, in order to enable the device to have a certain emergency function, it should be ensured that the clamping force of the clamping plates 42 on the fixed rod 41 is limited, and it can only maintain that the fixed rod 41 and the floating rod 36 do not fall in the suspended state. When the sea level is too high and the floating rod 36 and the second air cushion 37 are submerged too deep, the buoyancy in the deep water area can be relied on to push the floating rod 36 and the fixed rod 41 to rise, forcibly making the trigger plate 35 contact the ascending switch 39, and urgently lifting the main body 10 to the highest height.

[0036] In this embodiment, when it is necessary to stop the lifting control of the main body 10, the electric push rod 45 contracts, pulling the lifting plate 46 to slide upward. While the lifting plate 46 moves, it pulls two groups of clamping plates 42 to slide towards the middle along the outer circle of the limiting rod 43 through the second pulling rope 47. While the clamping plates 42 move, they squeeze the spring 44, causing the spring 44 to contract under force until the inner circles of the two groups of clamping plates 42 clamp and fix the fixing rod 41. At this time, the lifting of the floating rod 36 is restricted, and the height of the main body 10 is stabilized. When it is necessary to adjust the height of the main body 10 again, the electric push rod 45 extends, pushing the lifting plate 46 to slide downward. While the lifting plate 46 moves, it relaxes the pulling force on the two groups of clamping plates 42 through the second pulling rope 47. At this time, the spring 44 restores its deformation from the contracted state, pushing the two groups of clamping plates 42 to slide outward along the outer circle of the limiting rod 43 until the inner circles of the two groups of clamping plates 42 separate from the outside of the fixing rod 41, releasing the clamping of the fixing rod 41, and thus releasing the restriction on the lifting of the floating rod 36.

[0037] Embodiment 2: A working method of an offshore drilling platform applicable to intertidal operations, for the offshore drilling platform applicable to intertidal operations described above, includes: S1: Start adjustment: The two groups of clamping plates 42 release the clamping of the fixing rod 41, enabling the trigger plate 35 to be lifted and lowered freely; S2: Lift and lower with the water level: When the sea level is high, the floating rod 36 rises, pushing the trigger plate 35 to rise, 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 to rise. When the sea level is low, the floating rod 36 loses the buoyant support 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; S3: Fix the height: When the main body 10 reaches the appropriate height, neither the upper nor the lower ends of the trigger plate 35 are in contact with the down switch 38 or the up switch 39. To avoid the influence of sea waves causing the device to lift and lower frequently, control the two groups of clamping plates 42 to fix the fixing rod 41. At this time, the trigger plate 35 cannot be lifted and lowered freely, and thus cannot touch the switch, and the main body 10 can be fixed to the specified height; S4: Connect personnel: In the normal state, the first pulling rope 25 is freely relaxed, enabling the mooring platform 21 to lift and lower with the water level. When connecting personnel, after the personnel walk onto the mooring platform 21, the first pulling rope 25 operates to retract, lifting the mooring platform 21 to be parallel to the main body 10.

[0038] In this embodiment, to prevent the S3 program from still running when the sea level is too high, the clamping force on the fixing rod 41 in the S3 program should be controlled so that when the floating rod 36 and the trigger plate 35 are submerged too deep by sea water, they can rely on buoyancy to forcibly push the fixing rod 41 to rise, thereby forcibly starting the rising process in the S2 program until the main body 10 rises to the highest height.

[0039] The working principle of the present invention is as follows: When it is necessary to adjust the height of the main body 10, the electric push rod 45 extends, pushing the lifting plate 46 to slide downward, relaxing the second pull rope 47, enabling the two groups of clamping plates 42 to slide outward, releasing the clamping of the fixed rod 41. Subsequently, the floating rod 36 freely rises and falls on the sea surface relying on the second air cushion 37. When the sea level rises and drives the floating rod 36 to rise, the trigger plate 35 rises accordingly and contacts the ascending switch 39. At this time, the control system receives the signal and drives the hydraulic rod 15 to extend, pushing the sliding column 13 to extend, thereby driving the main body 10 to rise. On the contrary, when the sea level drops and causes the floating rod 36 to drop, the trigger plate 35 drops accordingly and contacts the descending switch 38. After the control system receives the signal, it drives the hydraulic rod 15 to contract, driving the sliding column 13 to retract, and the main body 10 drops accordingly. When it is necessary to stop the lifting control of the main body 10, the electric push rod 45 contracts, pulling the lifting plate 46 to slide upward, pulling the second pull rope 47 and the two groups of clamping plates 42 to slide towards the center of the limiting rod 43 until the fixed rod 41 is clamped and fixed. At this time, the lifting and falling of the floating rod 36 are restricted, and the height of the main body 10 is stabilized. Under normal conditions, the mooring platform 21 floats on the sea surface relying on the bottom plate 22 and the first air cushion 23, facilitating the docking of transport ships or traffic ships. When it is necessary to transfer personnel or transport materials, the two groups of hoisting machines 26 will be started synchronously, pulling the first pull rope 25, and smoothly lifting the mooring platform 21 and the personnel or materials thereon to a height parallel to the main body 10, facilitating the transfer of personnel or materials.

[0040] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specifically stated and limited, are implemented according to the 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 fixing assembly (40), characterized in that: The main body (10), a support column (12) is fixedly installed at 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); The lifting platform assembly (20), the lifting platform assembly (20) includes a berthing platform (21), the berthing platform (21) is arranged outside the main body (10), and a first pulling rope (25) is arranged inside the berthing platform (21); The floating assembly (30), the floating assembly (30) includes a mounting column (32), a trigger plate (35) is arranged in the inner cavity of the mounting column (32), a floating rod (36) is fixedly connected to the lower end of the trigger plate (35), and a lowering switch (38) and a lifting switch (39) are respectively installed at the positions above and below the trigger plate (35) in the inner cavity of the mounting column (32); The fixing assembly (40), the fixing assembly (40) includes a fixing rod (41), the fixing rod (41) is fixedly connected to the upper end of the trigger plate (35), two groups of clamping plates (42) are arranged in the inner cavity of the mounting column (32), and the inner circles of the two groups of clamping plates (42) are in contact connection with the outer side of the fixing rod (41); Wherein, 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 lifting switch (39), and controls the sliding column (13) to retract or extend; The two groups of clamping plates (42) are used to clamp the fixing rod (41), thereby fixing the trigger plate (35) and the floating rod (36).

2. The offshore drilling platform applicable to intertidal operations according to claim 1, characterized in that: A plurality of storage rooms (11) are fixedly installed at the upper end of the inner cavity of the main body (10).

3. The offshore drilling platform applicable to intertidal operations according to claim 2, wherein: A stabilizing plate (14) is fixedly connected to the outer circle of the lower end of the sliding column (13), a hydraulic rod (15) is fixedly installed at the upper end of the inner cavity of the support column (12), 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 applicable to intertidal operations according to claim 3, characterized in that: An annular scraper (16) is fixedly connected to the inner circle of the lower end of the support column (12), and the inner circle of the lower end of the annular scraper (16) is in contact connection with the outer circle of the sliding column (13).

5. The offshore drilling platform applicable to intertidal operations according to claim 4, characterized in that: The lifting platform assembly (20) further includes a bottom plate (22), the bottom plate (22) is fixedly connected to the lower end of the berthing platform (21), an air cushion one (23) is fixedly connected to the lower end of the bottom plate (22), a bracket (24) is fixedly connected to the lower end of the main body (10), the berthing platform (21) and the bottom plate (22) are slidably connected to the outer circle of the bracket (24), two groups of hoisting machines (26) are fixedly installed at the upper end of the main body (10), the first pulling rope (25) is provided with two groups, which are respectively fixedly connected to the bottom plate (22) and the berthing platform (21), and the upper ends of the two groups of first pulling ropes (25) are fixedly connected to the inner circle of the hoisting machine (26).

6. The offshore drilling platform applicable to intertidal operations according to claim 5, characterized in that: The floating component (30) further includes an installation box (31). The installation box (31) is fixedly connected to the lower end of the main body (10), and the upper end of the installation column (32) is fixedly connected to the lower end of the installation box (31). A wave baffle (33) is fixedly connected to the outer circumference of the middle section of the installation column (32). The lower end of the wave baffle (33) is arranged at the lower end of the installation column (32), and a ventilation opening (34) is opened at the upper end of the wave baffle (33).

7. The offshore drilling platform applicable to intertidal operations according to claim 6, characterized in that: A middle-shaped groove is opened at the lower end of the installation column (32), 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 middle-shaped groove and is placed at the lower end of the installation column (32). The floating component (30) further includes an air cushion two (37). The air cushion two (37) is fixedly connected to the lower end of the floating rod (36). Two sets of lowering switches (38) are provided and are respectively installed at the lower ends of both sides of the inner cavity of the middle-shaped groove, and two sets of lifting switches (39) are also provided and are respectively installed at the upper ends of both sides of the inner cavity of the middle-shaped groove.

8. The offshore drilling platform applicable to intertidal operation according to claim 7, characterized in that: The upper end of the fixed rod (41) is slidably connected to the middle part of the inner cavity of the installation column (32). The fixing component (40) further includes two sets of limiting rods (43). The two sets of limiting rods (43) are respectively fixedly connected to the left and right sides of the inner cavity of the installation column (32), and the lower ends of the two sets of clamping plates (42) are respectively slidably connected to the outer circumferences of the two sets of limiting rods (43). Springs (44) are fixedly connected to the lower ends of the two sets of clamping plates (42), and the springs (44) are sleeved on the outer circumferences of the limiting rods (43), and the other ends of the springs (44) are fixedly connected to the inner cavity of the installation column (32).

9. The offshore drilling platform applicable to intertidal operations according to claim 8, wherein: The fixing component (forty) further includes an electric push rod (45). The electric push rod (45) is fixedly installed at the upper end of the inner cavity of the installation 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 part of the inner cavity of the installation column (32). Two sets of second pull ropes (47) are fixedly connected to the left and right sides of the lower end of the lifting plate (46). The lower ends of the two sets of second pull ropes (47) respectively pass through the installation column (32) and are fixedly connected to the upper inner cavities of the two sets of clamping plates (42).

10. A working method of an offshore drilling platform applicable to intertidal operations, characterized in that: A marine drilling platform applicable to intertidal operations according to any one of claims 1 to 9, comprising: S1: Opening and regulation: The two sets of clamping plates (42) loosen the clamping of the fixed rod (41) so that the trigger plate (35) can be lifted and lowered freely; S2: Rising and falling with the water level height: When the sea level is high, the floating rod (36) rises, pushing the trigger plate (35) to rise, so that the trigger plate (35) touches the lifting switch (39). At this time, the sliding column (13) extends outwards, pushing the main body (10) to rise. When the sea level is low, the floating rod (36) loses the buoyancy support and falls down, so that the trigger plate (35) touches the lowering switch (38). At this time, the sliding column (13) retracts inwards, causing the main body (10) to lower; S3: Fixed height: When the main body (10) reaches an appropriate height, neither the upper nor the lower ends of the trigger plate (35) contact the down switch (38) or the up switch (39). To avoid frequent lifting and lowering of the device caused by the influence of sea waves, the two groups of clamping plates (42) are controlled to fix the fixed rod (41). At this time, the trigger plate (35) cannot move up and down freely and thus cannot touch the switch, so that the main body (10) can be fixed at the specified height; S4: Connecting personnel: In the normal state, the first pull rope (25) is freely relaxed, allowing the mooring platform (21) to rise and fall with the water level. When connecting personnel, after the personnel walk onto the mooring platform (21), the first pull rope (25) is operated to retract, lifting the mooring platform (21) to be parallel to the main body (10).

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