Lifting platform for offshore pile top construction

Abstract

The invention discloses a lifting platform for offshore pile top construction, and relates to the technical field of ocean engineering, the lifting platform comprises a main body mechanism, four lifting mechanisms are movably inserted in the inner surface wall of the main body mechanism, and two driving mechanisms are fixedly mounted on the outer surface walls of the four lifting mechanisms; the lifting mechanism comprises a fixing pile. According to the lifting platform, after the device is started, a motor can enable two half gears to synchronously and reversely rotate through a rotating shaft and a transmission gear, so that racks on the left side and the right side are sequentially driven to start to move, then the platform is driven to ascend and descend, and the platform is clamped by means of cooperation between two metal clamping blocks and positioning holes; compared with a traditional gear and rack clamping structure, the clamping tongue is matched with the fixing hole so that external interference can be better resisted and the stability of the lifting platform can be ensured on the sea where the environment is severe and stormy waves are large, meanwhile, the structure is relatively simple and reliable, the fault rate is low, and therefore the construction safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to a lifting platform used for offshore pile top construction. Background Art

[0002] In the field of marine engineering, offshore pile foundation construction is a vital task, which is directly related to the stability and safety of offshore buildings (such as offshore platforms, bridges, wind power towers, etc.). The pile top construction link, especially the installation of pile caps and the lowering of steel cages, often requires the use of lifting platforms to complete. In the field of offshore pile top construction, rack and pinion lifting mechanisms, as a common lifting method, have long been widely used in various lifting platforms. However, with the continuous advancement of marine engineering technology and the increasing construction requirements, some inherent shortcomings of rack and pinion lifting mechanisms have gradually emerged, which have had an adverse impact on the safety and efficiency of offshore pile top construction.

[0003] During offshore pile top construction, the rack and pinion lifting mechanism needs to handle heavy components, which causes the gears and racks to be subjected to continuous friction and uneven force during long-term, high-frequency meshing. This continuous mechanical stress not only accelerates the wear of the gears and racks, but may also cause tooth surface peeling or breakage, thereby seriously affecting the reliability and service life of the lifting mechanism. More importantly, during the lifting process, the lifting platform may be subjected to the impact and vibration of natural forces such as wind, waves, and tides. When the rack and pinion lifting mechanism is in a clamping state, these external impacts and vibrations may cause the clamping device to loosen or fail. Once the clamping device cannot maintain a stable clamping force, the stability and safety of the lifting platform will be seriously threatened. Summary of the invention

[0004] The purpose of the present invention is to provide a lifting platform for offshore pile top construction, which drives the movement of the rack and the half gear by a motor to drive the platform to rise and fall. At the same time, the electromagnet clamping device is accurately positioned on the fixed pile to avoid the looseness that may be caused by the meshing of the gear and rack, so as to solve the problems raised in the above background.

[0005] To achieve the above object, the present invention provides the following technical solution: a lifting platform for offshore pile top construction, comprising a main body mechanism, wherein four lifting mechanisms are movably inserted into the inner surface wall of the main body mechanism, and two driving mechanisms are fixedly installed on the outer surface walls of the four lifting mechanisms; The lifting mechanism includes a fixed pile, the outer wall of the fixed pile is provided with a plurality of positioning holes, the outer wall of the fixed pile is movably sleeved with a group of clamping sleeves, the inner wall of a group of the clamping sleeves are movably inserted with two sliding rods, the outer wall of a group of the sliding rods are wound with spring 1, and the top of a group of spring 1 is fixedly connected to the bottom of a group of clamping sleeves, a fixing ring is fixedly installed between the bottoms of a group of the sliding rods, and the inner wall of the fixing ring is movably inserted with the outer wall of the fixed pile, and the bottom of a group of spring 1 is fixedly connected to the top of the fixing ring, the inner wall of a group of the clamping sleeves are provided with two installation grooves, an electromagnet is fixedly installed on one side of the inner wall of a group of the installation grooves, and a spring 2 is fixedly installed on one side of the inner wall of a group of the installation grooves.

[0006] Preferably, a metal block 2 is fixedly installed on one side of the outer wall of a group of springs 2, and the outer walls of a group of metal blocks 2 are movably inserted into the inner walls of a group of mounting grooves, and the outer walls of a group of metal blocks 2 are movably inserted into the inner walls of a group of positioning holes.

[0007] Preferably, the main body mechanism includes a base, the bottom of the base is fixedly connected to the top of the four groups of sliding rods, the top of the base is provided with four mounting holes, a guardrail is fixedly installed on the top of the base, the inner surface walls of the four mounting holes are provided with a group of movable grooves, and one side of the inner wall of the four groups of movable grooves is fixedly installed with an electric telescopic rod.

[0008] Preferably, the telescopic ends of the four groups of electric telescopic rods are fixedly installed with metal blocks 1, and the outer walls of the four groups of metal blocks 1 are movably inserted in the inner walls of a group of movable grooves, and the outer walls of the four groups of metal blocks 1 are movably inserted in the inner walls of a group of positioning holes, a group of supporting legs are fixedly installed at the bottom of the base, a buoyancy seat is fixedly installed between the bottoms of a group of supporting legs, and a group of propellers are fixedly installed at the bottom of the buoyancy seat.

[0009] Preferably, a group of electric hoists are fixedly installed on the bottom of the base, the outer walls of the group of electric hoists are wrapped with fixed anchors, the top of the buoyancy seat is fixedly connected to an electric valve, the bottom of the inner wall of the buoyancy seat is fixedly installed with a water pump, the output end of the water pump is fixedly connected to a water pipe, and the outer wall of the water pipe is fixedly inserted into the interior of the buoyancy seat.

[0010] Preferably, the driving mechanism includes a protective cover, the tops of the eight protective covers are fixedly connected to the bottom of the base, two shaft holes 1 are opened on one side of the outer wall of the protective cover, and a group of shaft holes 2 are opened on the outer wall of the protective cover.

[0011] Preferably, a motor is fixedly mounted on one side of the outer wall of the protective cover, a worm is fixedly mounted on the output end of the motor, and a set of shaft holes are movably inserted between the two inner walls and the outer wall of the worm.

[0012] Preferably, the inner surface wall of the protective cover is provided with two slide grooves, the inner surface walls of the two slide grooves are movably embedded with sliders, and one side of the outer wall of the two sliders is fixedly installed with a rack.

[0013] Preferably, the outer walls of a group of the ferrules are fixedly connected to the outer walls of the four racks, the inner walls of the two shaft holes are movably inserted with a rotating shaft, and the outer walls of the two rotating shafts are fixedly sleeved with a half gear.

[0014] Preferably, the outer walls of the two rotating shafts are fixedly sleeved with transmission gears, and the outer walls of the two transmission gears are meshed with each other. The outer wall of one of the two rotating shafts is fixedly sleeved with a worm wheel, and the outer wall of the worm wheel is meshedly connected with the inner wall of the worm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, after the device is started, the motor can use the rotating shaft and the transmission gear to enable the two half gears to rotate synchronously but in opposite directions, thereby driving the racks on the left and right sides to start moving in turn, and then driving the platform to be lifted and lowered. The platform relies on the cooperation between the two metal blocks and the positioning holes to achieve the clamping of the platform. Compared with the traditional gear rack clamping structure, in harsh environments such as the sea with strong winds and waves, the cooperation between the clamping tongue and the fixing hole can better resist external interference and ensure the stability of the lifting platform. At the same time, the structure is relatively simple and reliable, with a low failure rate, thereby improving the safety of construction.

[0016] In the present invention, in the lifting platform, the self-locking property of the worm gear mechanism enables the load position to remain stable even if the motor stops working, thereby ensuring the stability of the lifting platform in a stopped state, preventing accidental movement or falling, and improving the safety of construction.

[0017] In the present invention, when the platform needs to be fixed in deep waters, seawater is sucked in through a water pump so that most of the buoyancy base is immersed below the sea level, which significantly improves the overall stability of the platform and reduces the risk of shaking and tilting. The propeller at the bottom of the buoyancy base can quickly generate reverse thrust under the push of waves, helping the platform to accurately adjust its position and ensuring that the platform always maintains the correct operating posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a main structural stereogram of a lifting platform used for offshore pile top construction according to the present invention; Figure 2 This is a top view of a main mechanism of a lifting platform for offshore pile top construction according to the present invention; Figure 3 It is a sectional stereoscopic diagram of a main mechanism in a lifting platform for offshore pile top construction according to the present invention; Figure 4 It is a three-dimensional schematic diagram of a lifting mechanism in a lifting platform used for offshore pile top construction according to the present invention; Figure 5 It is a partial three-dimensional exploded view of a lifting mechanism in a lifting platform for offshore pile top construction according to the present invention; Figure 6 It is a schematic diagram of the disassembly of a driving mechanism in a lifting platform for offshore pile top construction according to the present invention; Figure 7 This is a top view of a driving mechanism in a lifting platform for offshore pile top construction according to the present invention; Figure 8 The present invention is a top perspective view of a lifting mechanism and a driving mechanism in a lifting platform for offshore pile top construction.

[0019] In the figure: 1. Main body; 101. Base; 102. Mounting hole; 103. Guardrail; 104. Movable slot; 105. Electric telescopic rod; 106. Metal clamp block 1; 107. Support leg; 108. Buoyancy seat; 109. Propeller; 110. Electric hoist; 111. Fixed anchor; 112. Electric valve; 113. Water pump; 114. Water pipe; 2. Lifting mechanism; 201. Fixed pile; 202. Positioning hole; 203. Card sleeve; 204, slide bar; 205, spring 1; 206, fixing ring; 207, mounting groove; 208, electromagnet; 209, spring 2; 210, metal block 2; 3, driving mechanism; 301, protective cover; 302, shaft hole 1; 303, shaft hole 2; 304, motor; 305, worm; 306, slide groove; 307, slider; 308, rack; 309, rotating shaft; 310, half gear; 311, transmission gear; 312, worm wheel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Reference Figure 1 - Figure 8 As shown, the present invention provides a lifting platform for offshore pile top construction, comprising a main body mechanism 1, four lifting mechanisms 2 are movably inserted into the inner surface wall of the main body mechanism 1, and two driving mechanisms 3 are fixedly installed on the outer surface walls of the four lifting mechanisms 2; The main body mechanism 1 includes a base 101, and the bottom of the base 101 is fixedly connected to the top of the four sets of sliding rods 204; The lifting mechanism 2 includes a fixed pile 201, and the outer wall of the fixed pile 201 is provided with a plurality of positioning holes 202. The outer wall of the fixed pile 201 is movably sleeved with a group of clamping sleeves 203, and the inner wall of the group of clamping sleeves 203 is movably inserted with two slide bars 204. The outer wall of the group of slide bars 204 is wound with springs 205, and the top of the group of springs 205 is fixedly connected with the bottom of the group of clamping sleeves 203, and a fixing ring 206 is fixedly installed between the bottoms of the group of slide bars 204, and the inner wall of the fixing ring 206 is movably inserted with the outer wall of the fixed pile 201, and the group of springs The bottom of the first and second springs 205 are fixedly connected to the top of the fixing ring 206, the inner surface wall of a group of ferrules 203 is provided with two mounting grooves 207, one side of the inner wall of a group of mounting grooves 207 is fixedly installed with an electromagnet 208, one side of the inner wall of a group of mounting grooves 207 is fixedly installed with a second spring 209, one side of the outer wall of a group of springs 209 is fixedly installed with a second metal clamping block 210, and the outer surface wall of a group of metal clamping blocks 210 is movably inserted in the inner surface wall of a group of mounting grooves 207, and the outer surface wall of a group of metal clamping blocks 210 is movably inserted in the inner surface wall of a group of positioning holes 202; The driving mechanism 3 includes a protective cover 301. The tops of the eight protective covers 301 are fixedly connected to the bottom of the base 101. Two shaft holes 302 are provided on one side of the outer wall of the protective cover 301. A group of shaft holes 303 are provided on the outer wall of the protective cover 301. A motor 304 is fixedly installed on one side of the outer wall of the protective cover 301. A worm 305 is fixedly installed on the output end of the motor 304. The inner wall of the group of shaft holes 303 is movably inserted with the outer wall of the worm 305. Two slide grooves 306 are provided on the inner wall of the protective cover 301. Slide blocks 307 are movably embedded in the inner walls of the two slide grooves 306. A rack 308 is fixedly installed on one side of the outer wall of the two sliders 307, the outer walls of a group of ferrules 203 are fixedly connected to the outer walls of the four racks 308, the inner walls of the two shaft holes 302 are movably inserted with a rotating shaft 309, the outer walls of the two rotating shafts 309 are fixedly sleeved with a half gear 310, the outer walls of the two rotating shafts 309 are fixedly sleeved with a transmission gear 311, and the outer walls of the two transmission gears 311 are meshed with each other, the outer wall of one of the two rotating shafts 309 is fixedly sleeved with a worm gear 312, and the outer wall of the worm gear 312 is meshed with the inner wall of the worm 305.

[0022] In this embodiment, after the fixing pile 201 is inserted into the seabed and fixed, the height of the base 101 is also fixed. When the user needs to lift the platform, the motor 304 can be started first, thereby driving the two half gears 310 to rotate synchronously. Since the tooth marks on the surfaces of the two half gears 310 are distributed differently, they will mesh with the two racks 308 in sequence. When the left half gear 310 meshes with the left rack 308, the two electromagnets 208 inside the left sleeve 203 are energized to generate magnetic force. At this time, the magnetic force generated by the electromagnet 208 will attract the metal block 210, so that the metal block 210 is pulled out from the inside of the positioning hole 202 and retracted into the inside of the installation slot 207. In the process, the spring 209 is squeezed, which is convenient for the corresponding sleeve 203 to be fixed on the fixing pile 2 01 surface slides freely, at this time, the rack 308 will drop under the action of the half gear 310, and drive the slider 307 on the outer wall side to slide inside the slide groove 306, the slider 307 cooperates with the slide groove 306, and can effectively prevent the rack 308 from deviating in the forward direction, at this time, the rack 308 drives the sleeve 203 on the outer wall side to drop on the surface of the fixed pile 201, because the position of the fixed ring 206 remains unchanged, the descending sleeve 203 squeezes the spring 1 205 below, when the sleeve 203 drives the internal metal block 210 to the positioning hole 202 below, the corresponding electromagnet 208 is powered off and closed, and the metal block 210 will be pushed into the positioning hole 202 by the stretched spring 209 after there is no magnetic attraction, and the electric telescopic rod 1 05 starts to start, at this time the electric telescopic rod 105 starts to shrink and drives the metal block 106 to be pulled out from a set of positioning holes 202, releasing the fixation of the metal block 106 to the fixed pile 201, and at the same time the left half gear 310 will separate from the left rack 308, the right half gear 310 starts to mesh with the right rack 308, and the two electromagnets 208 inside the right sleeve 203 also start to be energized, attracting the metal block 210 to be pulled out from the positioning hole 202, making it easier for the right sleeve 203 to slide, and the right rack 308 is driven to descend at this time. At this time, since the base 101 is only fixed by the two metal blocks 210 on the left, when the rack 308 descends, it will drive the protective cover 301 to descend together with the base 101 on top of it, and previously The spring 1 205 squeezed by the left clamping sleeve 203 is reset accordingly, and by pushing the fixing ring 206 down, the top base 101 is assisted to descend, thereby completing the descending process of the platform. When the two metal blocks 210 in the right clamping sleeve 203 come into the corresponding positioning holes 202, the two electromagnets 208 are also powered off, so that the stretched spring 209 pushes the metal block 210 to insert into the positioning hole 202. At this time, a group of electric telescopic rods 105 are stretched, pushing the metal block 106 to insert into the corresponding group of positioning holes 202, fixing the position of the base 101. As the motor 304 continues to start, the left and right racks 308 descend alternately, driving the base 101 to descend. When the top of the rack 308 is engaged with the half gear 310 and cannot continue to descend,All electromagnets 208 are started at the same time, driving all metal clamping blocks 210 to be pulled out. At this time, the motor 304 reverses and can pull the two racks 308 to reset. If the user needs to drive the base 101 to rise, the user can easily achieve this goal by adjusting the rotation direction of the motor 304. The device clamps the base 101 through the clamping block, avoiding the looseness or misalignment problem that may be caused by the meshing of a single gear rack, and can better ensure the stability and reliability of the lifting platform and reduce the risk of accidents caused by shaking or tilting.

[0023] Embodiment 2: According to Figure 1 and Figure 6-Figure 8 As shown, the driving mechanism 3 includes a protective cover 301, the tops of the eight protective covers 301 are fixedly connected to the bottom of the base 101, two shaft holes 302 are opened on one side of the outer wall of the protective cover 301, and a group of shaft holes 303 are opened on the outer wall of the protective cover 301. A motor 304 is fixedly installed on one side of the outer wall of the protective cover 301, and a worm 305 is fixedly installed on the output end of the motor 304. The inner surface walls of the group of shaft holes 303 are movably inserted with the outer wall of the worm 305, and the inner surface wall of the protective cover 301 is provided with two slide grooves 306, and the inner surface walls of the two slide grooves 306 are movably embedded with sliders 307 A rack 308 is fixedly installed on one side of the outer wall of the two sliders 307, and the outer walls of a group of ferrules 203 are fixedly connected to the outer walls of the four racks 308. A rotating shaft 309 is movably inserted into the inner walls of the two shaft holes 302. A half gear 310 is fixedly sleeved on the outer walls of the two rotating shafts 309. A transmission gear 311 is fixedly sleeved on the outer walls of the two rotating shafts 309, and the outer walls of the two transmission gears 311 are meshed with each other. A worm gear 312 is fixedly sleeved on the outer wall of one of the two rotating shafts 309, and the outer wall of the worm gear 312 is meshed with the inner wall of the worm 305.

[0024] In this embodiment, after the motor 304 is started, it will drive the worm 305 to rotate inside the protective cover 301. At this time, the worm wheel 312 meshing with the worm 305 is driven to rotate accordingly. The mechanism composed of the two can withstand large radial and axial loads, meeting the heavy load requirements in offshore pile top construction. It also has a self-locking feature, ensuring that the lifting platform can maintain a stable load position during vertical transportation or positioning even without external force driving, which effectively prevents the load from sliding down due to unexpected situations such as wind and waves, greatly improving the safety and reliability of the operation. At this time, the worm wheel 312 makes the internal rotating shaft 309 rotate inside the shaft hole 1 302, and the transmission gear 311 fixedly mounted on the outer wall of the rotating shaft 309 rotates synchronously, and drives the other transmission gear 311 meshing with it and the rotating shaft 309 to rotate in the opposite direction. At this time, the two relatively rotating rotating shafts 309 respectively drive the two half gears 310 to rotate, driving other structures to move.

[0025] Embodiment 3: According to Figure 1-Figure 3 As shown, the main body mechanism 1 includes a base 101, the bottom of the base 101 is fixedly connected to the top of the four groups of sliding rods 204, the top of the base 101 is provided with four mounting holes 102, the top of the base 101 is fixedly provided with a guardrail 103, the inner surface wall of the four mounting holes 102 is provided with a group of movable grooves 104, one side of the inner wall of the four groups of movable grooves 104 is fixedly provided with electric telescopic rods 105, the telescopic ends of the four groups of electric telescopic rods 105 are fixedly provided with metal clamps 106, and the outer surfaces of the four groups of metal clamps 106 are movably inserted into the inner surface wall of a group of movable grooves 104, and the outer surfaces of the four groups of metal clamps 106 are movably inserted into A group of positioning holes 202 are provided on the inner wall, a group of supporting legs 107 are fixedly installed on the bottom of the base 101, a buoyancy seat 108 is fixedly installed between the bottoms of the group of supporting legs 107, a group of propellers 109 are fixedly installed on the bottom of the buoyancy seat 108, a group of electric hoists 110 are fixedly installed on the bottom of the base 101, a group of electric hoists 110 have their outer wall wrapped with a fixed anchor 111, the top of the buoyancy seat 108 is fixedly connected to an electric valve 112, a water pump 113 is fixedly installed on the bottom of the inner wall of the buoyancy seat 108, an output end of the water pump 113 is fixedly connected to a water pipe 114, and the outer wall of the water pipe 114 is fixedly inserted into the interior of the buoyancy seat 108.

[0026] In this embodiment, the guardrail 103 can prevent workers and equipment from accidentally falling. When the platform is transported on the sea surface, the buoyancy seat 108 is filled with air to provide sufficient buoyancy for the platform. When the platform is too far from the seabed to be fixed with the help of the fixed pile 201, the electric hoist 110 can be started after the platform arrives at the work site to lower the fixed anchor 111. The platform can be fixed with the help of the fixed anchor 111, so that it can be fine-tuned according to different sea conditions and construction requirements, thereby improving the adaptability and flexibility of the platform. Subsequently, the water pump 113 is started to suck part of the seawater into the buoyancy seat 108 with the help of the water pipe 114, so that the platform can be fixed with the help of the fixed anchor 111. Most of the buoyancy seat 108 is located below the sea level, thereby improving the stability of the lifting platform. A stable lifting platform can reduce the risk of accidents caused by shaking or tilting, such as people falling, equipment damage, etc., thereby ensuring the safety of construction workers and the integrity of equipment. At this time, the electric valve 112 is started to facilitate the discharge of air inside the buoyancy seat 108 to avoid damage to the device caused by excessive internal pressure. At the same time, a group of propellers 109 at the bottom of the buoyancy seat 108 can generate thrust in the opposite direction when it is pushed by the waves, thereby more accurately controlling the position of the platform and ensuring that the platform always maintains the correct position during the offshore pile top construction process.

[0027] The working principle of the whole mechanism is as follows: after the motor 304 is started, its power will be transmitted to the worm 305, driving it to rotate inside the protective cover 301. The worm 305 and the worm wheel 312 are precisely meshed, so that the worm wheel 312 also rotates. Even if the motor 304 stops working and there is no external force driving, the mechanism can ensure that the load position remains stable. As the worm wheel 312 rotates, its internal shaft 309 also starts to rotate in the shaft hole 1 302. The transmission gear 311 fixedly mounted on the outer wall of the shaft 309 forms a meshing connection with another transmission gear 311, so the two will rotate synchronously, but in opposite directions. This design enables the two relatively rotating shafts 309 to drive the two half gears 310 to rotate respectively. The two half gears 310 are driven to rotate synchronously, and the two half gears 310 can be precisely meshed with the racks 308 on both sides in turn. When the left half gear 310 meshes with the left rack 308 and starts to drive it to descend, the electromagnet 208 in the left ferrule 203 is energized to generate magnetic force to attract the metal block 210 to be pulled out of the positioning hole 202 and retracted into the installation slot 207, and in the process, the spring 209 is compressed. This design allows the ferrule 203 to automatically move on the fixed pile 201. By sliding, at the same time, the descent of the rack 308 drives the slider 307 on its outer side to slide smoothly in the slide groove 306, effectively preventing deviation and ensuring that the rack 308 moves along the predetermined trajectory. As the rack 308 descends, it drives the sleeve 203 to slide down along the fixed pile 201, while compressing the spring 1 205 below. When the sleeve 203 and the metal block 210 inside it reach the next positioning hole 202, the electromagnet 208 is powered off, and the metal block 210 is inserted into the positioning hole 202 under the push of the spring 209 to achieve fixation. At this time, the electric telescopic rod 105 begins to shrink, driving the metal block 106 to be pulled out of the positioning hole 202, releasing the fixation of the fixed pile 201, and at the same time, the left half gear 310 and the left rack 308 are engaged. Separated, the right half gear 310 begins to mesh with the right rack 308 and drives it to descend. Since the base 101 is only fixed by the metal block 210 on the left at this time, when the right rack 308 descends, it will drive the protective cover 301 and the base 101 on its top to descend together. At the same time, the compressed spring 1 205 on the left is reset to push the fixing ring 206 down, further assisting the smooth descent of the base 101. When the metal block 210 in the right sleeve 203 is also inserted into the corresponding positioning hole 202, the electromagnet 208 is also powered off, and the metal block 210 is fixed in place. At this time, a group of electric telescopic rods 105 are extended to push the metal block 106 into the corresponding group of positioning holes 202, thereby fixing the position of the base 101.As the motor 304 continues to run, the left and right racks 308 descend alternately, driving the base 101 to gradually descend. When the top of the rack 308 meshes with the half gear 310 to the limit position and cannot continue to descend, all the electromagnets 208 are started at the same time, and all the metal blocks 210 are pulled out. At this time, the motor 304 reverses, and the two racks 308 can be easily pulled back to the initial position. If the user needs to increase the height of the base 101, it can be easily achieved by adjusting the rotation direction of the motor 304. The guardrail 103 effectively prevents workers and equipment from accidentally falling during operation, providing the first safety line for construction. When the lifting platform is transported on the sea, the buoyancy seat 108 is filled with air, which provides sufficient buoyancy for the platform to ensure its smooth navigation on the water. When the depth of the water where the platform needs to operate exceeds the fixed range of the fixed pile 201, once the platform arrives at the predetermined work location, the electric hoist 11 0 will be activated, and the fixed anchor 111 will be dropped to the seabed. With the help of the fixed anchor 111, the platform is fixed on the sea surface. Then, the water pump 113 starts roaring, and the seawater is sucked into the buoyancy seat 108 through the water pipe 114, so that most of the volume of the buoyancy seat 108 is immersed below the sea level. This measure significantly improves the overall stability of the lifting platform and greatly reduces the risk of accidents caused by shaking or tilting. At the same time, the timely activation of the electric valve 112 opens a channel for the discharge of air inside the buoyancy seat 108, effectively avoiding the problem of device damage caused by excessive internal pressure. A group of propellers 109 equipped at the bottom of the buoyancy seat 108 can quickly generate thrust in the opposite direction under the impetus of the waves, helping the platform to accurately adjust its position. This design ensures that the platform can always maintain the correct working posture during the offshore pile top construction process, providing strong technical support for efficient and safe construction. ,

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting platform for offshore pile top construction, comprising a main body (1), characterized in that: Four lifting mechanisms (2) are movably inserted into the inner surface wall of the main body mechanism (1), and two driving mechanisms (3) are fixedly mounted on the outer surface walls of the four lifting mechanisms (2); The lifting mechanism (2) comprises a fixed pile (201), the outer wall of the fixed pile (201) is provided with a plurality of positioning holes (202), the outer wall of the fixed pile (201) is movably sleeved with a group of clamping sleeves (203), the inner wall of a group of the clamping sleeves (203) are movably inserted with two sliding rods (204), the outer wall of a group of the sliding rods (204) are wound with springs (205), and the top of the group of springs (205) is fixedly connected to the bottom of the group of the clamping sleeves (203), and the group of the sliding rods (204) are A fixing ring (206) is fixedly installed between the bottom of the fixing pile (204), and the inner wall of the fixing ring (206) is movably inserted into the outer wall of the fixing pile (201), and the bottom of a group of springs (205) is fixedly connected to the top of the fixing ring (206), and the inner wall of a group of the ferrules (203) is provided with two installation grooves (207), and one side of the inner wall of a group of the installation grooves (207) is fixedly installed with an electromagnet (208), and one side of the inner wall of a group of the installation grooves (207) is fixedly installed with a spring two (209).

2. A lifting platform for offshore pile top construction according to claim 1, characterized in that: A metal clamping block 2 (210) is fixedly mounted on one side of the outer wall of a group of springs 2 (209), and the outer wall of a group of metal clamping blocks 2 (210) is movably inserted into the inner wall of a group of mounting grooves (207), and the outer wall of a group of metal clamping blocks 2 (210) is movably inserted into the inner wall of a group of positioning holes (202).

3. A lifting platform for offshore pile top construction according to claim 2, characterized in that: The main body mechanism (1) comprises a base (101), the bottom of the base (101) is fixedly connected to the tops of four groups of sliding rods (204), the top of the base (101) is provided with four mounting holes (102), a guardrail (103) is fixedly installed on the top of the base (101), the inner surface walls of the four mounting holes (102) are each provided with a group of movable grooves (104), and one side of the inner wall of the four groups of movable grooves (104) is fixedly installed with an electric telescopic rod (105).

4. A lifting platform for offshore pile top construction according to claim 3, characterized in that: The telescopic ends of the four groups of electric telescopic rods (105) are all fixedly mounted with metal clamping blocks (106), and the outer walls of the four groups of metal clamping blocks (106) are all movably inserted into the inner walls of a group of movable grooves (104), and the outer walls of the four groups of metal clamping blocks (106) are all movably inserted into the inner walls of a group of positioning holes (202), a group of supporting legs (107) are fixedly mounted at the bottom of the base (101), a buoyancy seat (108) is fixedly mounted between the bottoms of a group of supporting legs (107), and a group of propellers (109) are fixedly mounted at the bottom of the buoyancy seat (108).

5. A lifting platform for offshore pile top construction according to claim 4, characterized in that: A group of electric hoists (110) are fixedly mounted on the bottom of the base (101); a fixed anchor (111) is wound around the outer wall of the group of electric hoists (110); an electric valve (112) is fixedly connected to the top of the buoyancy seat (108); a water pump (113) is fixedly mounted on the bottom of the inner wall of the buoyancy seat (108); an output end of the water pump (113) is fixedly connected to a water pipe (114); and the outer wall of the water pipe (114) is fixedly inserted into the interior of the buoyancy seat (108).

6. A lifting platform for offshore pile top construction according to claim 5, characterized in that: The driving mechanism (3) comprises a protective cover (301), the tops of eight protective covers (301) being fixedly connected to the bottom of the base (101), two first shaft holes (302) being provided on one side of an outer wall of the protective cover (301), and a group of second shaft holes (303) being provided on an outer wall of the protective cover (301).

7. A lifting platform for offshore pile top construction according to claim 6, characterized in that: A motor (304) is fixedly mounted on one side of the outer wall of the protective cover (301), a worm (305) is fixedly mounted on the output end of the motor (304), and an outer wall of the worm (305) is movably inserted between the inner wall of the second shaft hole (303) and the outer wall of the worm (305).

8. A lifting platform for offshore pile top construction according to claim 7, characterized in that: The inner surface wall of the protection cover (301) is provided with two slide grooves (306), the inner surface walls of the two slide grooves (306) are both movably embedded with sliders (307), and one side of the outer wall of the two sliders (307) is fixedly mounted with racks (308).

9. A lifting platform for offshore pile top construction according to claim 8, characterized in that: The outer walls of a group of the clamping sleeves (203) are fixedly connected to the outer walls of the four racks (308); the inner walls of the two shaft holes (302) are movably provided with a rotating shaft (309); and the outer walls of the two rotating shafts (309) are fixedly provided with a half gear (310).

10. A lifting platform for offshore pile top construction according to claim 9, characterized in that: The outer walls of the two rotating shafts (309) are both fixedly sleeved with transmission gears (311), and the outer walls of the two transmission gears (311) are meshed with each other. The outer wall of one of the two rotating shafts (309) is fixedly sleeved with a worm gear (312), and the outer wall of the worm gear (312) is meshedly connected with the inner wall of the worm (305).

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