A structure of a pile leg of a self-elevating drilling platform

Abstract

The utility model provides a pile leg structure of self-elevating drilling platform, including pile leg main part, the bottom fixed mounting of pile leg main part has the base, the top one side fixed mounting of pile leg main part has the cleaning mechanism, the cleaning end of cleaning mechanism is equipped with the outer surface of pile leg main part, the cleaning mechanism includes displacement module, during this technical scheme application, through setting displacement module, drive module and cleaning module, drive annular cleaning brush to realize axial movement and circumferential rotation compound motion, can adapt long pile leg and select steel brush and enhance cleaning force, high -efficiently remove stubborn dirt and have no blind area, through base, support top disc, side branch fixed frame and vertical cladding casing etc, enhance structural strength to resist marine environmental load, prevent transmission component from being damaged, can also avoid dirt to accelerate pile leg corrosion, solved the low cleaning efficiency of prior art, the problem of insufficient stability, transmission is vulnerable and pile leg is vulnerable to corrosion.

Description

Technical Field

[0001] This utility model relates to the field of marine platform technology, and in particular to a leg structure for a jack-up drilling platform. Background Technology

[0002] In the field of marine resource development and offshore engineering operations, offshore platforms are key structures for realizing core activities such as drilling, oil production, collection and transportation, observation, navigation and construction. Their stable operation is directly related to operational efficiency and personnel safety. As the core support structure of offshore platforms, the legs not only need to bear the entire weight of the upper hull, but also need to withstand the complex and ever-changing environmental loads of wind, waves and currents at sea for a long time. They are key components to ensure the overall structural stability of the platform. Therefore, in order to cope with the harsh marine working conditions and ensure the structural strength and support reliability of the legs during long-term service, there is an urgent need for special platform leg reinforcement devices to strengthen and protect them. However, most of the mainstream offshore platform leg reinforcement devices on the market currently adopt a combined structure design of "support rod + screw". Although such devices can improve the stability of the legs to a certain extent, they have revealed significant defects in practical applications: On the one hand, the assembly process relies on the one-by-one connection and fixing of a large number of parts, and the installation steps are cumbersome, which not only increases the time cost of on-site construction, but also easily affects the reinforcement effect due to insufficient assembly accuracy; on the other hand, due to the limitations of structural design, the improvement in overall stability is limited, and it is difficult to completely resist the load impact of extreme marine environments. More importantly, existing reinforcement devices generally lack the function of cleaning the surface of the legs. In the offshore operating environment, seawater corrosion products, marine organisms and other dirt are easy to accumulate on the surface of the legs. Long-term adhesion will accelerate the corrosion and aging of the legs, leading to a decrease in their structural strength, thereby weakening the overall stability and storm resistance of the platform. Once encountering severe natural disasters such as typhoons, tsunamis, and ice storms, the bearing limit of the legs is easily exceeded, which may not only cause damage to the platform structure, but also pose a major threat to the life safety of the operators on the platform. To address the aforementioned issues, the industry has undertaken relevant technological improvements. For example, Chinese patent CN214994167U discloses a marine platform leg reinforcement device. This device comprises a leg body, a base body, a platform body, reinforcement components, and adjustment components. The reinforcement components (including reinforcement sleeves, reinforcement diagonal bars, and reinforcement sleeve rods) enhance the stability of the leg body and improve the platform's storm resistance. Simultaneously, the adjustment components allow for flexible adjustment of the angle of the reinforcement diagonal bars to adapt to the support requirements of different marine environments. A cleaning component is also added to remove dirt from the leg surface, aiming to solve the problem of leg corrosion. From a design perspective, this patented device represents a significant improvement in functional integration compared to traditional devices, possessing advantages such as high practicality, structural stability, and ease of operation. However, in practical applications, the cleaning function of this patented device still has significant shortcomings, making it difficult to meet the long-term and efficient requirements for pile leg protection: Firstly, its cleaning structure only adopts a single "up and down brushing" motion mode. The cleaning brush can only make linear reciprocating motions along the pile leg axis and cannot rotate itself. This results in a single form of contact with dirt during the cleaning process, making it difficult to effectively remove stubborn stains with strong adhesion to the pile leg surface (such as hardened marine organism deposits and deep corrosion products). The cleaning efficiency and cleaning effect are both relatively limited. Secondly, the cleaning drive mechanism of this device relies on screw transmission to achieve the upward movement of the cleaning components. The downward displacement is limited by the length of the lead screw drive, which can only be adapted to short-range linear displacement scenarios. When facing long offshore platform legs, the lead screw cannot cover the entire cleaning area of ​​the legs, resulting in a large number of cleaning blind spots and making it impossible to achieve comprehensive cleaning of the leg surface. These defects mean that the patented device cannot completely solve the problem of dirt accumulation and corrosion on the legs during long-term service, thus affecting the overall protective effect of the reinforcement device. Therefore, it is urgent to further improve and optimize its structure to enhance the effectiveness and adaptability of the cleaning function and ensure that the legs are in a stable and reliable service state for a long time. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a leg structure for a self-elevating drilling platform, which more accurately solves the problems described above.

[0004] This utility model is achieved through the following technical solution: This utility model proposes a leg structure for a self-elevating drilling platform, including a leg body, a base fixedly installed at the bottom of the leg body, and a cleaning mechanism fixedly installed on one side of the top of the leg body, with the cleaning end of the cleaning mechanism sleeved on the outer surface of the leg body. The cleaning mechanism includes a displacement module, which is fixedly installed on one side of the top of the base. A connecting block is fixedly installed on the moving end of the displacement module. An annular rail is fixedly installed on the side of the connecting block near the pile leg body. A cleaning module is movably installed on the inner side of the annular rail. The annular rail and the cleaning module are sleeved on the outer surface of the pile leg body. A drive module is fixedly installed on one side of the annular rail. The output end of the drive module is connected to the cleaning module in a transmission manner.

[0005] Furthermore, mounting holes are provided at all four corners of the base, and a support plate is fixedly installed on the top of the main body of the pile leg. The bottom of the support plate is connected to the top of the displacement module.

[0006] Furthermore, the displacement module includes a support rail, which is fixedly installed on one side of the top of the base. The top of the support rail is connected to the bottom of the support plate. A movable block is slidably connected inside the support rail. A connecting block is fixedly installed on the side of the movable block near the pile leg body. A rack is fixedly installed on one side of the support rail. A side plate is fixedly installed on one side of the movable block. A first motor is fixedly installed on the rear side of the side plate. A first gear is fixedly installed through the output end of the first motor through the side plate. The first gear and the rack are meshed together.

[0007] Furthermore, a vertical covering shell is fixedly installed on one side of the supporting rail, and the vertical covering shell covers the outside of the first gear and rack.

[0008] Furthermore, the cleaning module includes a slip ring, which is rotatably connected to the inside of the slip ring. A connecting frame is fixedly installed on the inner side of the slip ring, and a cleaning ring is fixedly installed on the inner side of the connecting frame. The cleaning ring is sleeved on the outer surface of the pile leg body, and an annular cleaning brush is fixedly installed on the inner side of the cleaning ring. The inner side of the annular cleaning brush is in close contact with the outer surface of the pile leg body. A toothed ring is fixedly installed on the top of the slip ring, and the toothed ring is connected to the drive module for transmission.

[0009] Furthermore, the drive module includes a side plate, which is fixedly installed on one side of the annular rail. A second motor is fixedly installed at the bottom of the side plate, and a second gear is fixedly installed through the output end of the second motor, which meshes with the gear ring.

[0010] Furthermore, the bottom of the supporting top plate is fixedly equipped with side supports arranged in a ring at equal intervals, and the bottom of the side supports is fixedly connected to the top of the base.

[0011] The beneficial effects of this utility model are: 1. During the application of this technical solution, by setting up a displacement module and a drive module, the cleaning module can achieve a composite motion of axial movement and circumferential rotation during use. The annular cleaning brush can cover different height areas along the axial direction of the pile leg body and can also brush away dirt around the circumference of the pile leg body. At the same time, steel brushes can be selected to enhance the cleaning ability of stubborn stains as needed, thereby achieving the effect of efficient and comprehensive cleaning of the outer surface of the pile leg. This solves the problems of existing technologies where the cleaning mechanism can only move in one direction, has low cleaning efficiency, has blind spots, and is difficult to remove stubborn stains. At the same time, by setting up a base, supporting top plate, and side support frame, the overall structural connection strength is enhanced, enabling the device to better withstand environmental loads such as wind, waves, and currents at sea, thereby improving the platform's storm resistance and solving the problems of insufficient stability of existing reinforcement devices and difficulty in resisting extreme environmental loads. 2. During the application of this technical solution, by setting up a vertical encasing shell and a configurable annular protective shell on the outside of the second gear, or by using anti-pollution grease and corrosion-resistant chromium-molybdenum alloy steel, the transmission components can be effectively protected during use, preventing them from being exposed and damaged by the environment. At the same time, the displacement module adopts a supporting vertical rail in conjunction with rack and pinion transmission, which is suitable for the structure requirements of long pile legs. This achieves the effect of ensuring the long-term stable operation of each mechanism and adapting to the cleaning of pile legs of different lengths, solving the problems of insufficient protection and easy damage to transmission components and difficulty in adapting cleaning devices to long pile leg structures in existing technologies. In addition, the coordinated work of each structure ensures continuous cleaning operations, avoids the accumulation of dirt and accelerated corrosion and aging of pile legs, and solves the problem of reduced structural strength of pile legs due to dirt erosion in existing technologies. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a top view of the cleaning module of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of the cleaning module of this utility model; Figure 5 This utility model Figure 2 A magnified structural diagram at point A.

[0013] In the diagram: 1. Main body of the pile leg; 2. Base; 3. Cleaning mechanism; 31. Displacement module; 311. Support rail; 312. Movable block; 313. Rack; 314. Side plate; 315. First motor; 316. First gear; 317. Vertical encasing shell; 32. Connecting block; 33. Circular rail; 34. Cleaning module; 341. Slip ring; 342. Connecting frame; 343. Cleaning ring; 344. Circular cleaning brush; 345. Gear ring; 35. Drive module; 351. Side plate; 352. Second motor; 353. Second gear; 4. Mounting hole; 5. Support top plate; 6. Side support frame. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0015] A leg structure for a self-elevating drilling platform includes a leg body 1, a base 2 fixedly installed at the bottom of the leg body 1, and a cleaning mechanism 3 fixedly installed on one side of the top of the leg body, with the cleaning end of the cleaning mechanism 3 sleeved on the outer surface of the leg body 1. The cleaning mechanism 3 includes a displacement module 31, which is fixedly installed on one side of the top of the base 2. A connecting block 32 is fixedly installed on the moving end of the displacement module 31. An annular rail 33 is fixedly installed on the side of the connecting block 32 near the pile leg body 1. A cleaning module 34 is movably installed on the inner side of the annular rail 33. The annular rail 33 and the cleaning module 34 are fitted onto the outer surface of the pile leg body 1. A drive module 35 is fixedly installed on one side of the annular rail 33. The output end of the drive module 35 is connected to the cleaning module 34. During the application of this device, by setting up the cleaning mechanism 3, the moving end of the displacement module 31 can drive the connecting block 32 to move. The connecting block 32 then drives the annular rail 33 and the inner cleaning module 34 to move synchronously, allowing the cleaning end of the cleaning module 34 to move along the outer surface of the pile leg body 1. At the same time, the annular rail 33 moves synchronously. The drive module 35 can drive the cleaning module 34 to move inside the annular rail 33, so that the cleaning end of the cleaning module 34 can move relative to the outer surface of the pile leg body 1 while moving with the annular rail 33, thereby cleaning the outer surface of the pile leg body 1. The base 2 at the bottom of the pile leg body 1 provides stable support for the entire structure, ensuring that the cleaning mechanism 3 will not affect the cleaning effect due to unstable support during operation. This design not only allows the cleaning process to cover different areas of the outer surface of the pile leg body 1, but also improves the cleaning flexibility through the cooperation of the displacement module 31 and the drive module 35, avoiding the problem of incomplete cleaning that may occur with cleaning in one direction, effectively ensuring the cleanliness of the outer surface of the pile leg body 1, reducing the impact of dirt accumulation on the pile leg body 1, and at the same time, the overall structure is simple and operates smoothly, and can continuously and stably play a cleaning role during use.

[0016] Combination Figures 1-2As shown, mounting holes 4 are provided at each of the four corners of the base 2. A support plate 5 is fixedly installed on the top of the pile leg body 1. The bottom of the support plate 5 is connected to the top of the displacement module 31. The displacement module 31 includes a support rail 311, which is fixedly installed on one side of the top of the base 2. The top of the support rail 311 is connected to the bottom of the support plate 5. A movable block 312 is slidably connected inside the support rail 311. A connecting block 32 is fixedly installed on the movable block 312 near the pile leg body 1. On one side, a rack 313 is fixedly installed on the side of the supporting vertical rail 311, a side plate 314 is fixedly installed on the side of the movable block 312, a first motor 315 is fixedly installed on the rear side of the side plate 314, a first gear 316 is fixedly installed through the side plate 314 at the output end of the first motor 315, and the first gear 316 and the rack 313 are meshed and connected. A vertical covering shell 317 is fixedly installed on one side of the supporting vertical rail 311, and the vertical covering shell 317 covers the outside of the first gear 316 and the rack 313.

[0017] In the above-described embodiments of this application, during the application of this device, the structure includes a base 2, a supporting top plate 5, a supporting rail 311 for the displacement module 31, a movable block 312, a first motor 315, a first gear 316, and a rack 313. This allows the device to be stably fixed using the mounting holes 4 at the four corners of the base 2. After starting the first motor 315, its output drives the first gear 316 to rotate. Because the first gear 316 meshes with the rack 313, and is fixed to the movable block 312 along with the side plate 314, the rotation of the first gear 316 moves along the rack 313, thereby causing the movable block 312 to slide inside the supporting rail 311. The sliding of the movable block 312 drives the connecting block 32. The displacement module 31 moves synchronously, and the top support plate 5 is connected to the top of the support rail 311, providing stable support for the support rail 311. At the same time, the vertical enclosure shell 317 covers the outside of the first gear 316 and rack 313, which can protect them. This design allows the displacement module 31 to stably drive the movement of subsequent components. It ensures the overall installation stability of the device through the mounting holes 4 of the base 2, reduces the influence of external factors on the first gear 316 and rack 313 through the vertical enclosure shell 317, and enhances the support strength of the support rail 311 with the help of the top support plate 5. This ensures the smooth and stable operation of the displacement module 31, avoids operational failures caused by insufficient structural support or damage to transmission components, and improves the reliability and stability of the device during use. Example 2

[0018] Combination Figures 3-5As shown, the cleaning module 34 includes a slip ring 341, which is rotatably connected to the inside of the slip ring 341. A connecting frame 342 is fixedly installed on the inner side of the slip ring 341, and a cleaning ring 343 is fixedly installed on the inner side of the connecting frame 342. The cleaning ring 343 is sleeved on the outer surface of the pile leg body, and an annular cleaning brush 344 is fixedly installed on the inner side of the cleaning ring 343. The inner side of the annular cleaning brush 344 is in close contact with the outer surface of the pile leg body. A toothed ring 345 is fixedly installed on the top of the slip ring 341. 345 is connected to the drive module 35. The drive module 35 includes a side plate 351, which is fixedly installed on one side of the ring rail 33. A second motor 352 is fixedly installed at the bottom of the side plate 351. A second gear 353 is fixedly installed through the output end of the second motor 352 through the side plate 351. The second gear 353 is meshed with the gear ring 345. Side support frames 6 are fixedly installed at equal intervals in a ring at the bottom of the support top plate 5. The bottom of the side support frames 6 is fixedly connected to the top of the base 2.

[0019] In the above-described embodiments of this application, during the application of this device, by setting up a slip ring 341, connecting frame 342, cleaning ring 343, annular cleaning brush 344, toothed ring 345 in the cleaning module 34, and a side plate 351, second motor 352, second gear 353 in the drive module 35, as well as a side support frame 6 supporting the bottom of the top plate 5, when the second motor 352 is started, the output end of the second motor 352 drives the second gear 353 to rotate. Because the second gear 353 and the toothed ring 345 are meshed, the rotation of the second gear 353 will drive the toothed ring 345 to rotate synchronously. The toothed ring 345 is fixed on the top of the slip ring 341, and the slip ring 341 is rotatably connected to the inside of the annular rail 33. Therefore, the toothed ring 345 will drive the slip ring 341 to rotate along the annular rail 33. When the slip ring 341 rotates, it will... The inner connecting frame 342 rotates, which in turn drives the cleaning ring 343 and the annular cleaning brush 344 inside the cleaning ring 343 to rotate. The inner side of the annular cleaning brush 344 is in contact with the outer surface of the pile leg body, which can perform brushing operations on the outer surface of the pile leg body. At the same time, the bottom of the side support frame 6 at the bottom of the supporting top plate 5 is fixedly connected to the top of the base 2 and is arranged in a ring at equal intervals, which can enhance the connection stability between the supporting top plate 5 and the base 2. This design not only allows the cleaning module 34 to effectively clean the outer surface of the pile leg body by rotating, but also improves the overall structural stability of the device through the side support frame 6, avoiding the impact of structural shaking on the cleaning effect during the cleaning operation, and reducing structural wear due to insufficient support during long-term use of the device, thus ensuring the smoothness of the cleaning operation and the service life of the device.

[0020] The working principle and advantages of this utility model are as follows: During the application of this utility model, when cleaning the outer surface of the leg body 1 of the self-elevating drilling platform, the first motor 315 in the displacement module 31 of this device is first started. The output end of the first motor 315 drives the first gear 316 to rotate. Since the first gear 316 meshes with the rack 313 and the first gear 316 is fixed on the movable block 312 along with the side plate 314, the first gear 316 will move along the length direction of the rack 313 when it rotates, thereby driving the side plate 314 and the movable block 312 to slide along the support rail 311. When the movable block 312 slides, it will drive the connecting Block 32 moves synchronously along the axial direction of the pile leg body 1. Connecting block 32 drives the annular rail 33 and the cleaning module 34 inside the annular rail 33 to move together. At this time, the annular cleaning brush 344 in the cleaning module 34 is sleeved on the outer surface of the pile leg body 1 along with the cleaning ring 343 and moves along the axial direction. It initially contacts the dirt at different height positions on the outer surface of the pile leg body 1. When the displacement module 31 is running, the vertical encasing shell 317 covers the outside of the first gear 316 and the rack 313, which plays a protective role. This allows the displacement module 31 to stably drive the cleaning module 34 to move, thereby ensuring that the cleaning operation is carried out smoothly. While the displacement module 31 drives the cleaning module 34 to move axially along the pile leg body 1, the second motor 352 in the drive module 35 of this device is activated. The output end of the second motor 352 drives the second gear 353 to rotate. The second gear 353 meshes with the gear ring 345. Therefore, the rotation of the second gear 353 will drive the gear ring 345 to rotate. The gear ring 345 will then drive the slip ring 341 to rotate along the annular rail 33. When the slip ring 341 rotates, it will drive the connecting frame 342 to rotate synchronously. The connecting frame 342 will then drive the cleaning ring 343 and the inner side of the cleaning ring 343. The annular cleaning brush 344 rotates together. At this time, the annular cleaning brush 344 moves along the axial direction of the pile leg body 1 with the cleaning module 34, and can also rotate around the pile leg body 1. By moving axially, it covers different height areas of the pile leg body 1, and by rotating around the circumference, it brushes away the dirt it comes into contact with, so that the cleaning operation on the outer surface of the pile leg body 1 can be carried out comprehensively. When the drive module 35 is running, the side plate 351 provides installation support for the second motor 352, ensuring that the second motor 352 can output power stably, thereby ensuring the rotation effect of the cleaning module 34. Throughout the cleaning operation, the base 2 is fixed to the foundation structure through the four corner mounting holes 4, providing stable support for the entire pile leg structure. The support top plate 5 connects the pile leg body 1 with the upper structure of the platform, and also provides support for the support rail 311 and the side support frame 6. The side support frame 6 is arranged in a ring at equal intervals, which can enhance the connection strength between the support top plate 5 and the base 2. The pile leg body 1, as the core load-bearing component, forms a stable overall structure together with the base 2, the support top plate 5 and the side support frame 6. When the cleaning mechanism 3 is running, the ring rail 33 provides a rotation track for the cleaning module 34, limiting the rotation range of the cleaning module 34, and also provides installation support for the drive module 35. The connecting block 32 effectively connects the displacement module 31 and the ring rail 33, accurately transmitting the power of the moving end of the displacement module 31 to the ring rail 33, so that the various structures can work together, thereby ensuring the continuous progress of the cleaning operation. By setting up the above structures, this device can achieve efficient cleaning of the outer surface of the leg body 1 during use. The displacement module 31 uses a support rail 311 in conjunction with a rack 313 and a first gear 316 for transmission. Its length can be adapted to long leg structures, enabling the cleaning module 34 to move along the entire axial direction of the leg body 1, eliminating blind spots and achieving comprehensive cleaning of long legs. The drive module 35 drives the cleaning module 34 to rotate, causing the annular cleaning brush 344 to form a composite motion of axial movement and circumferential rotation, increasing the contact with dirt and effectively removing stubborn stains, thus improving cleaning efficiency and effect. The side support frame 6 cooperates with the base 2 and the support top plate 5 to enhance the connection strength of the overall structure, enabling the device to better withstand environmental loads such as wind, waves, and currents at sea, and improving the platform's storm resistance. The vertical encasing shell 317 protects the first gear 316 and rack 313. The drive module 35 has a simple and stable transmission structure, ensuring reliable operation of each mechanism, thus enabling the device to meet the requirements of a jack-up drilling platform. To address the long-term operational requirements of the leg structure in complex marine environments, it is crucial to prevent the accumulation of dirt that accelerates corrosion and aging, thus preventing a decline in the strength of the leg structure and ensuring stable platform operation and operator safety. During the application of this device, an annular protective shell can be installed on the outer side of the second gear 353. This annular protective shell can cover the outer surface of the second gear 353 and the toothed ring 345, preventing the gear and toothed ring 345 from being exposed. If no protective shell is installed, anti-fouling greases such as lithium-based grease or polyurea grease can be used, which can be used stably in the exposed state for a long time. The second gear 353 and toothed ring 345 can also be made of corrosion-resistant chromium-molybdenum alloy steel. For example, the exposed bicycle sprockets and chains or the exposed track gear transmission structure of tracked excavators can be referred to in the existing technology. Since this is an existing technology, it will not be described in detail here. During the application of this device, the annular cleaning brush 344 can be set as a steel brush as needed. If it is necessary to clean stubborn stains, a steel brush can be set for brushing and cleaning. The main electronic components and circuit system configuration in this technical solution are as follows: The controller is an STM32F407VET6 microcontroller, installed on the platform. The controller integrates a 12864 LCD screen to display the equipment operating parameters; the first motor 315 and the second motor 352 are both 130ST-M06025 servo motors with a rated power of 600W, a rated speed of 3000rpm, and a rated torque of 1.91N·m. Each motor is equipped with an AB60 gearbox reducer (reduction ratio adjustable from 1:10 to 1:100) to help increase torque or adjust and reduce speed. Each motor shaft is equipped with an E6B2-CWZ6C encoder (resolution 1000p / r), which can realize flexible adjustment of motor rotation and stepless speed regulation through the position signal fed back by the encoder. In the displacement module 31, the sensor used to detect the position of the movable block 312 is an E2E-X10ME1 type proximity switch. In the cleaning module 34, the sensor used to detect the thickness of the dirt is an LJ12A3-4-Z / BX type inductive sensor. During use, depending on specific application requirements, E2E-X10ME1 type proximity switches can be installed at both ends of the support rail 311 to limit the movement limit position of the movable block 312. An LJ12A3-4-Z / BX type inductive sensor is installed inside the cleaning ring 343 to detect the dirt thickness on the surface of the pile leg body 1 in real time. A GY-68 type barometric pressure sensor is installed on the outside of the base 2 to monitor changes in marine environmental barometric pressure. The circuit system connection method is as follows: external 220V AC power is converted to 24V DC power via an AC-DC power module (RD-120-24 type, output 24V / 5A), and one path is directly ST. The STM32F407VET6 controller, E2E-X10ME1 proximity switch, LJ12A3-4-Z / BX inductive sensor, GY-68 barometric pressure sensor, and 12864 LCD screen are powered by a DC-DC power module (MP2307, 5V / 3A output) which converts the power to 5V DC to power the E6B2-CWZ6C encoder. The 130ST-M06025 servo motor is driven by the matching ASD-B2-0621-B servo driver. The servo driver's power input is connected to 220V AC, and its control signal input is connected to the PWM output pin of the STM32F407VET6 controller. The encoder signal output is connected to the controller's GPIO pin, and the signal outputs of the proximity switch, inductive sensor, and barometric pressure sensor are all connected to the controller's ADC pin. During application, to ensure stable power supply and long-distance linear displacement of the displacement module 31, this technical solution is designed with multi-dimensional safeguards: For stable power supply, core components are configured with high protection levels. The conductive slip ring 341 uses IP68-rated LPT-12A-250V type to withstand seawater immersion. The power supply cable uses YCW-2×1.5mm² oil-resistant and seawater-resistant rubber-sheathed cable, and the signal line uses RVVP-2×0.75mm² shielded waterproof cable. All wiring connections are reinforced with waterproofing treatment, such as the connection between the slip ring 341 and the electrical... The cable connection is wrapped with waterproof tape and covered with IP67-grade waterproof heat shrink tubing; the electrical interface of movable block 312 is fitted with a nitrile rubber waterproof and dustproof cover; waterproof terminals are filled with waterproof silicone; and the cable hole of support rail 311 is filled with waterproof sealant. A combined structure of "conductive slip ring 341 + cable drag chain" is adopted. The fixed end of the conductive slip ring 341 is connected to the top of support rail 311, and the rotating end moves with movable block 312. A TL65 type IP66-grade cable drag chain is installed on the outside of support rail 311 for cable insertion to prevent damage from pulling. An RD power supply is provided at the front end. The -120-24 type AC-DC power module converts 220V AC power to 24V DC power. Low-voltage components such as encoders are additionally equipped with an MP2307 type DC-DC power module to convert to 5V to ensure voltage stability. For long-distance linear displacement, the displacement module 31 uses the support rail 311 extending from the base 2 to the support top plate 5 as its guiding foundation, adapting to the requirements of long pile legs. The drive adopts a "130ST-M06025 type servo motor + rack 313 + first gear 316" method, with the motor equipped with an AB60 type gearbox reducer. Adjusting torque and speed, an E6B2-CWZ6C encoder is installed at the shaft end to provide feedback signals. After receiving the signal, the controller outputs a PWM control signal to the servo driver to adjust the motor, ensuring that the movable block 312 moves at a uniform speed. E2E-X10ME1 proximity switches are installed at the upper and lower ends of the support rail 311 to prevent overtravel. The support top plate 5 is connected to the base 2 through the side support frame 6 to form a stable frame. The movable block 312 and the support rail 311 are connected by a high-precision slider to reduce friction and ensure that the movable block 312 can stably complete long-distance displacement along the track. The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

[0021] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A leg structure for a jack-up drilling platform, characterized in that, The system includes a pile leg body (1), a base (2) is fixedly installed at the bottom of the pile leg body (1), and a cleaning mechanism (3) is fixedly installed on one side of the top of the pile leg body (1). The cleaning end of the cleaning mechanism (3) is sleeved on the outer surface of the pile leg body (1). The cleaning mechanism (3) includes a displacement module (31), which is fixedly installed on the top side of the base (2). A connecting block (32) is fixedly installed on the moving end of the displacement module (31). An annular rail (33) is fixedly installed on the side of the connecting block (32) near the pile leg body (1). A cleaning module (34) is movably installed on the inner side of the annular rail (33). The annular rail (33) and the cleaning module (34) are sleeved on the outer surface of the pile leg body (1). A drive module (35) is fixedly installed on one side of the annular rail (33). The output end of the drive module (35) is connected to the cleaning module (34) in a transmission manner.

2. The leg structure of a jack-up drilling platform according to claim 1, characterized in that, The base (2) has mounting holes (4) at all four corners. The top of the pile leg body (1) is fixedly installed with a support plate (5). The bottom of the support plate (5) is connected to the top of the displacement module (31).

3. The leg structure of a jack-up drilling platform according to claim 2, characterized in that, The displacement module (31) includes a support rail (311), which is fixedly installed on the top side of the base (2). The top of the support rail (311) is connected to the bottom of the support plate (5). A movable block (312) is slidably connected inside the support rail (311). A connecting block (32) is fixedly installed on the side of the movable block (312) near the pile leg body (1). A rack (313) is fixedly installed on one side of the support rail (311). A side plate (314) is fixedly installed on one side of the movable block (312). A first motor (315) is fixedly installed on the rear side of the side plate (314). A first gear (316) is fixedly installed through the side plate (314) at the output end of the first motor (315). The first gear (316) and the rack (313) are meshed together.

4. The leg structure of a jack-up drilling platform according to claim 3, characterized in that, A vertical cover shell (317) is fixedly installed on one side of the support rail (311), and the vertical cover shell (317) covers the outside of the first gear (316) and the rack (313).

5. The leg structure of a jack-up drilling platform according to claim 1, characterized in that, The cleaning module (34) includes a slip ring (341), which is rotatably connected to the inside of the slip ring (341). A connecting frame (342) is fixedly installed on the inner side of the slip ring (341), and a cleaning ring (343) is fixedly installed on the inner side of the connecting frame (342). The cleaning ring (343) is sleeved on the outer surface of the pile leg body (1). A ring-shaped cleaning brush (344) is fixedly installed on the inner side of the cleaning ring (343). The inner side of the ring-shaped cleaning brush (344) is in close contact with the outer surface of the pile leg body (1). A toothed ring (345) is fixedly installed on the top of the slip ring (341), and the toothed ring (345) is connected to the drive module (35) for transmission.

6. The leg structure of a jack-up drilling platform according to claim 5, characterized in that, The drive module (35) includes a side plate (351), which is fixedly installed on one side of the ring rail (33). A second motor (352) is fixedly installed at the bottom of the side plate (351). A second gear (353) is fixedly installed through the side plate (351) at the output end of the second motor (352). The second gear (353) is meshed with a gear ring (345).

7. The leg structure of a jack-up drilling platform according to claim 2, characterized in that, The bottom of the supporting top plate (5) is fixedly installed with side supports (6) arranged in a ring at equal intervals, and the bottom of the side supports (6) is fixedly connected to the top of the base (2).

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