Offshore floating platform

Abstract

A steering mechanism is arranged below a platform truss, a plurality of anti-rotation guide columns are arranged on the bottom face of a lower circular ring of the steering mechanism, each anti-rotation guide column is connected with a floating pipe in a sleeved mode, and the floating pipes can only slide up and down relative to the anti-rotation guide columns without rotating. A fusiform floating base is assembled at the lower end of each floating pipe, and the floating bases can rotate relative to the floating pipes. Therefore, the floating pipe and the floating base can integrally revolve along with the lower circular ring, and the floating base can independently rotate relative to the floating pipe. The floating pipe and the floating base can adapt to sea wave impact to be adjusted, the fusiform floating base can automatically adjust the head wave direction along with the wave flow direction, and the wind wave resistance of the offshore floating platform is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore photovoltaic power generation, and in particular to an offshore floating platform. Background Art

[0002] Waterborne solar photovoltaic power generation also has the advantages of high power generation efficiency, eco-friendliness, and coordinated development with aquaculture. Waterborne solar photovoltaic power generation mainly adopts offshore platforms arranged near the coast and photovoltaic panels installed on the offshore platforms.

[0003] The existing offshore platform includes a support frame, a floating body arranged at the bottom of the support frame, and a truss arranged at the top of the support frame. The floating body is fixedly connected to the bottom of the support frame to play a floating role, and the photovoltaic power generation panel is installed on the truss. If needed, an anchor chain can be connected to the bottom of the support frame to limit the support frame to float with the water flow within a certain range.

[0004] However, the existing offshore platforms have a fixed connection between their support frame and floating body and do not have a rotation function. The impact of waves or water currents causes the entire offshore platform to shake and rotate, and the wind and wave stability of the offshore platform needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an offshore floating platform, in which the floating tube can move up and down relative to the anti-rotation guide column, the floating tube and the floating base can revolve together with the lower circular ring, and the floating base can rotate independently relative to the floating tube. After being impacted by wind and waves, the floating tube and the floating base can move adaptively to adapt to the impact of water flow in their respective areas, thereby reducing the transmission of impact force to the platform truss and improving the wind and wave resistance.

[0006] The technical solution of the present invention provides an offshore floating platform, including a platform truss, a steering mechanism, a floating tube and a shuttle-shaped floating base;

[0007] The platform truss has a truss bottom plate;

[0008] The steering mechanism comprises an upper ring fixedly connected below the truss bottom plate and a lower ring pivotally connected to the upper ring;

[0009] The bottom surface of the lower circular ring is uniformly provided with anti-rotation guide columns capable of preventing the floating tube from rotating, each of the anti-rotation guide columns is sleeved with a floating tube, the floating tube is slidably connected to the anti-rotation guide columns, and the floating tube can slide up and down relative to the anti-rotation guide columns;

[0010] The lower end of each floating tube is pivotally connected to a floating base, and a counterweight is provided in the floating base;

[0011] The floating tube and the floating base can revolve together with the lower circular ring, and the floating base can rotate independently relative to the floating tube.

[0012] In one of the optional technical solutions, an intermediate ring is installed between the upper ring and the lower ring;

[0013] The intermediate ring has a plurality of assembly holes evenly distributed along the circumferential direction, each of the assembly holes is provided with a rolling ball, and the rolling ball protrudes from the upper and lower surfaces of the intermediate ring;

[0014] The bottom surface of the upper circular ring has an upper circular groove, and the top surface of the lower circular ring has a lower circular groove;

[0015] A portion of the intermediate ring is assembled in the upper annular groove, and another portion of the intermediate ring is assembled in the lower annular groove. The rolling ball contacts the groove bottom of the upper annular groove and the groove bottom of the lower annular groove respectively.

[0016] In one of the optional technical solutions, the top of the floating base is provided with a connecting column, the connecting column is inserted into the lower end of the floating tube, and a bearing is assembled between the floating tube and the connecting column.

[0017] In one of the optional technical solutions, the floating base has a base tail portion, a base body portion and a base head portion connected in sequence;

[0018] The connecting column is connected to the upper part of the base body, the base body has a body cavity, the counterweight is in the body cavity, and the center of gravity of the counterweight is on the axis of the bearing;

[0019] The base tail portion has a hollow tail cavity, and the base head portion has a hollow head cavity.

[0020] In one of the optional technical solutions, in the direction from back to front, the width of the top surface of the base tail portion is equal, the width of the top surface of the base body portion gradually widens, and the width of the top surface of the base head portion gradually narrows;

[0021] In a direction from top to bottom, the widths of the base tail portion, the base main body portion and the base head portion gradually narrow.

[0022] In one of the optional technical solutions, the top surface of the floating base is provided with a sliding floating plate on both sides of the connecting column;

[0023] The sliding floating plate is slidably connected to the floating base, and a guide structure is installed between the sliding floating plate and the floating base;

[0024] The floating base is also provided with a driving mechanism for driving the two sliding floating plates to slide;

[0025] The driving mechanism includes a power unit and two sets of transmission units connected to opposite sides of the power unit;

[0026] The connecting column has an installation cavity, the power unit is installed in the installation cavity, and the transmission unit passes through the installation cavity and is connected to the sliding floating plate;

[0027] The transmission unit is located below the bearing;

[0028] When the sliding floating plate is in an initial state, the sliding floating plate is on the top of the floating base;

[0029] When the sliding floating plate is in an extended state, the sliding floating plate at least partially extends out of the outer side of the floating base.

[0030] In one of the optional technical solutions, the power unit is a motor, and the transmission unit includes a transmission shaft and a screw connected to the transmission shaft;

[0031] The sliding floating plate is provided with an internal threaded hole, and the cavity wall of the installation cavity is provided with a cavity wall through hole for the transmission shaft to pass through;

[0032] One end of the transmission shaft is connected to the motor, and a sealing ring is installed between the transmission shaft and the through hole of the cavity wall;

[0033] The screw is connected to the internal threaded hole.

[0034] In one of the optional technical solutions, the inner edge of the sliding floating plate has a floating plate flange protruding downward, and the outer edge of the floating base has a base flange protruding upward;

[0035] When the sliding floating plate is in an initial state, the edge of the sliding floating plate rests on the base flange;

[0036] When the sliding floating plate is extended to the limit position, the floating plate flange contacts the base flange.

[0037] In one of the optional technical solutions, the guide structure includes a T-shaped guide groove and a T-shaped guide rail that is clearance-matched with the T-shaped guide groove;

[0038] The T-shaped guide groove is arranged on the bottom surface of the sliding floating plate, and the T-shaped guide rail is arranged on the top surface of the floating base; or, the T-shaped guide rail is arranged on the bottom surface of the sliding floating plate, and the T-shaped guide groove is arranged on the top surface of the floating base.

[0039] In one of the optional technical solutions, the anti-rotation guide column has a wiring channel.

[0040] The above technical solution has the following beneficial effects:

[0041] The offshore floating platform provided by the present invention has a steering mechanism arranged below the platform truss, and a plurality of anti-rotation guide columns are arranged on the bottom surface of the lower circular ring of the steering mechanism, and a floating tube is sleeved on each anti-rotation guide column, and the floating tube can only slide up and down relative to the anti-rotation guide column without rotating. A shuttle-shaped floating base is installed at the lower end of each floating tube, and the floating base can rotate relative to the floating tube. Therefore, the floating tube and the floating base can revolve as a whole with the lower circular ring, and the floating base can also rotate independently relative to the floating tube.

[0042] When waves or currents impact the floating tube and / or the floating base, on the one hand, the floating tube can drive the floating base to slide up and down to adapt to the up and down impact of seawater and reduce the up and down shaking of the platform truss; on the other hand, the floating tube and the floating base can revolve as a whole with the lower circular ring to adjust the direction of the waves to adapt to the impact of a large range of water flow and reduce the shaking and rotation of the platform truss; on yet another hand, the shuttle-shaped floating base can automatically adjust the direction of the waves according to the direction of the wave current to further reduce the impact.

[0043] In summary, the offshore floating platform, floating pipe and floating base provided by the present invention can be adjusted according to the impact of adaptive waves, and the shuttle-shaped floating base can also automatically adjust the direction of the waves according to the direction of the wave flow, effectively improving the wind and wave resistance of the offshore floating platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0045] Figure 1 A three-dimensional diagram of an offshore floating platform provided by an embodiment of the present invention;

[0046] Figure 2 A front view of an offshore floating platform provided by an embodiment of the present invention;

[0047] Figure 3 This is an exploded diagram of the steering mechanism;

[0048] Figure 4 is a top view of the middle ring;

[0049] Figure 5 is a partial cross-sectional view of the steering mechanism;

[0050] Figure 6 It is a cross-sectional view of the floating tube, the anti-rotation guide column, the floating base and the bearing;

[0051] Figure 7 It is a top view of the floating base;

[0052] Figure 8 for Figure 7 Section view along AA direction;

[0053] Fig. 9 for Figure 7 Cross-sectional view along BB direction;

[0054] Fig.10 for Figure 7 Cross-sectional view along CC direction;

[0055] Fig.11 A top view of a floating base with a sliding floating plate and a driving mechanism installed on it;

[0056] Fig.12 for Fig.11 A schematic diagram of the sliding floating plate in the figure extending out under the action of the driving mechanism;

[0057] Fig.13 A top view of the connection between the driving mechanism and the floating base;

[0058] Fig.14 is a bottom view of the sliding floating plate;

[0059] Fig.15 A schematic diagram showing the connection between the sliding floating plate and the floating base via a guide structure;

[0060] Fig.16 for Fig.15 Exploded diagram of

[0061] Fig.17 It is a cross-sectional view of the floating tube, the anti-rotation guide column, the floating base, the bearing, the sliding floating plate and the driving mechanism;

[0062] Fig.18 is a cross-sectional view of the sliding floating plate in an initial state on the floating base;

[0063] Fig.19 It is a cross-sectional view of the sliding floating plate when it is in an extended state on the floating base;

[0064] Fig. 20 It is a schematic diagram of the assembly of the sliding floating plate and the floating base;

[0065] Fig.21 for Fig.18 A partial enlarged view of

[0066] Fig. 22 It is a schematic diagram showing that a cavity wall through hole is provided on the cavity wall of the installation cavity. DETAILED DESCRIPTION

[0067] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0068] like Figure 1-3 and Figure 6 As shown, an offshore floating platform provided by an embodiment of the present invention includes a platform truss 1, a steering mechanism 2, a floating tube 3 and a shuttle-shaped floating base 4.

[0069] The platform truss 1 has a truss base plate 11 .

[0070] The steering mechanism 2 includes an upper circular ring 21 fixedly connected below the truss bottom plate 11 and a lower circular ring 22 pivotally connected to the upper circular ring 21 .

[0071] The bottom surface of the lower ring 22 is evenly distributed with anti-rotation guide columns 25 that can prevent the floating tube 3 from rotating. A floating tube 3 is sleeved on each anti-rotation guide column 25. The floating tube 3 is slidably connected to the anti-rotation guide column 25, and the floating tube 3 can slide up and down relative to the anti-rotation guide column 25.

[0072] The lower end of each floating tube 3 is pivotally connected to a floating base 4 , in which a counterweight 5 is arranged.

[0073] The floating tube 3 and the floating base 4 can revolve together with the lower ring 22 , and the floating base 4 can rotate independently relative to the floating tube 3 .

[0074] The offshore floating platform provided by the present invention is mainly used for being arranged in the offshore to install photovoltaic panels for power generation.

[0075] The offshore floating platform mainly includes a platform truss 1, a steering mechanism 2, a floating pipe 3, a floating base 4 and a counterweight 5.

[0076] The platform truss 1 comprises a truss base plate 11 and a bracket arranged on the truss base plate 11, and the bracket is used for installing and fixing the photovoltaic panel.

[0077] The steering mechanism 2 is installed below the truss bottom plate 11. The steering mechanism 2 includes an upper ring 21 and a lower ring 22. The upper ring 21 is fixed to the bottom surface of the truss bottom plate 11, and the lower ring 22 is pivotally connected to the upper ring 21. Specifically, the circumferential surface of the upper ring 21 has a circle of bosses 211, and the circumferential surface of the lower ring 22 has at least three hooks 221. The hooks 221 are hung on the bosses 211, and the hooks 221 can slide relative to the bosses 211, and the lower ring 22 can rotate relative to the upper ring 21. If necessary, a bearing can be installed between the hook 221 and the boss 211 to reduce the friction when the hook 221 slides relative to the boss 211.

[0078] The floating tube 3 is a plastic tube made of polyethylene / polypropylene / nylon, etc. The multiple floating tubes 3 play a floating role, so that the platform truss 1 and the steering mechanism 2 are above the water surface. The diameter and length of the floating tube 3 can be set as needed to meet the buoyancy requirements.

[0079] In order to realize the assembly of the floating tube 3 onto the lower circular ring 22, more than three anti-rotation guide columns 25 are evenly distributed on the bottom surface of the lower circular ring 22, and the cross-section of the anti-rotation guide column 25 is rectangular, cross-shaped, etc. The through hole of the floating tube 3 is correspondingly configured in a rectangular, cross-shaped, etc. shape. Therefore, when the floating tube 3 is sleeved on the anti-rotation guide column 25, the floating tube 3 will rotate on the anti-rotation guide column 25. The floating tube 3 and the anti-rotation guide column 25 are clearance-fitted or slidably connected, and the floating tube 3 can slide up and down relative to the anti-rotation guide column 25 to adapt to the undulations of the waves.

[0080] The upper end of the floating tube 3 may be equipped with an upper end cap 31 , and the lower end of the floating tube 3 may be equipped with a lower end cap 31 to seal the floating tube 3 .

[0081] The length of the floating tube 3 is greater than the length of the anti-rotation guide column 25. As required, a protrusion 251 can be provided on the anti-rotation guide column 25 to limit the lowering limit position of the floating tube 3. When the floating tube 3 is lowered to the limit position, the protrusion 251 contacts the upper end cover 31 and is blocked by the upper end cover 31, and the floating tube 3 cannot be lowered any further.

[0082] A floating base 4 is mounted at the lower end of each floating tube 3. The floating base 4 is shuttle-shaped and is pivotally connected to the floating tube 3. The floating base 4 can rotate relative to the floating tube 3. The shuttle-shaped floating base 4 is more easily rotated to automatically adjust the direction of the wave and reduce the impact.

[0083] The floating base 4 can be made of the same material as the floating tube 3 to play a floating role. The floating base 4 is fusiform, with sharp ends and wide in the middle, similar to a ship. After being impacted by water flow, it can immediately turn and adjust to a stable position, which is conducive to improving stability. The size of the floating base 4 can be set according to needs.

[0084] The floating base 4 has a counterweight 5. The counterweight 5 can be made of metal, concrete, etc., which increases the weight of the floating base 4, lowers the center of gravity, and helps improve the stability of the floating base 4 in the water flow. The counterweight 5 can be injection molded in the floating base 4, or assembled in the floating base 4 at a later stage.

[0085] When encountering a large-scale water flow impact, that is, when all the floating tubes 3 are impacted by the water flow, the floating tubes 3 drive the floating base 4 to revolve together with the lower ring 22, so as to drive all the floating bases 4 to rotate together to adjust the direction of facing the waves and reduce the impact. Each floating base 4 can also rotate independently relative to the floating tube 3 to adapt to the water flow impact in the area where each floating base 4 is located, automatically adjust the direction of facing the waves, and further reduce the impact.

[0086] When the lower ring 22 and the components below rotate, the upper ring 21 and the platform truss 1 will not rotate accordingly, thereby improving the stability of the offshore floating platform. At the same time, the floating tube 3 can drive the floating base 4 to slide up and down to adapt to the up and down impact of seawater, thereby reducing the up and down shaking of the platform truss 1.

[0087] In summary, the floating platform provided by the present invention, the floating pipe 3 and the floating base 4 can be adjusted according to the impact of waves, and the shuttle-shaped floating base 4 can also automatically adjust the direction of the waves according to the direction of the wave flow, which effectively improves the wind and wave resistance of the floating platform.

[0088] As required, an anchor chain may be connected to the bottom of the upper ring 21 to confine the offshore floating platform to a designated area.

[0089] In one embodiment, if Figure 3-5 As shown, an intermediate ring 23 is installed between the upper ring 21 and the lower ring 22 .

[0090] A plurality of assembly holes 231 are evenly distributed along the circumferential direction on the middle ring 23 . A rolling ball 24 is installed in each assembly hole 231 . The rolling ball 24 protrudes from the upper and lower surfaces of the middle ring 23 .

[0091] The bottom surface of the upper circular ring 21 has an upper circular groove 212 , and the top surface of the lower circular ring 22 has a lower circular groove 222 .

[0092] A portion of the intermediate ring 23 is assembled in the upper annular groove 212 , and another portion of the intermediate ring 23 is assembled in the lower annular groove 222 . The rolling ball 24 contacts the groove bottom of the upper annular groove 212 and the groove bottom of the lower annular groove 212 , respectively.

[0093] In this embodiment, the steering mechanism 2 further includes an intermediate ring 23 and a plurality of rolling balls 24. The intermediate ring 23 has a plurality of assembly holes 231 evenly distributed along the circumferential direction, and a rolling ball 24 is assembled in each assembly hole 231. The diameter of the rolling ball 24 is greater than the thickness of the intermediate ring 23, and a portion of the rolling ball 24 protrudes from the upper surface of the intermediate ring 23, and another portion protrudes from the lower surface of the intermediate ring 23.

[0094] The bottom surface of the upper circular ring 21 has an annular upper ring groove 212, and the top surface of the lower circular ring 22 has an annular lower ring groove 222. The upper ring groove 212 is substantially aligned with the lower ring groove 222. During assembly, the bottom of the rolling ball 24 contacts the bottom of the lower ring groove 222, a portion of the intermediate ring 23 is interference-fitted in the lower ring groove 222, another portion of the intermediate ring 23 is clearance-fitted in the upper ring groove 212, and the top of the rolling ball 24 contacts the bottom of the upper ring groove 212.

[0095] When the lower ring 22 rotates, the middle ring 23 rotates with the lower ring 22 , and the rolling ball 24 also rotates with it, which reduces the friction between the lower ring 22 and the upper ring 21 and facilitates the smooth rotation of the lower ring 22 .

[0096] In one embodiment, if Figure 6 As shown, the top of the floating base 4 is provided with a connecting column 44 , the connecting column 44 is inserted into the lower end of the floating tube 3 , and a bearing 6 is assembled between the floating tube 3 and the connecting column 44 .

[0097] In this embodiment, a connecting column 44 is installed on the top of the floating base 4. The connecting column 44 can be connected to the floating base 4 by a fastening structure, or the connecting column 44 can be integrally formed with the floating base 4. The lower end of the floating tube 3 has a circular hole, and the connecting column 44 is inserted into the circular hole at the lower end of the floating tube 3. A bearing 6 is installed between the hole wall of the circular hole and the connecting column 44 to facilitate the smooth rotation of the connecting column 44. If necessary, a first groove can be opened on the hole wall of the circular hole for assembling the outer ring of the bearing 6; a second groove 441 (such as Fig. 9 As shown), it is used to assemble the inner ring of the bearing 6.

[0098] In one embodiment, if Figure 6 As shown, the floating base 4 comprises a base tail portion 41 , a base body portion 42 and a base head portion 43 which are connected in sequence.

[0099] The connecting column 44 is connected to the upper part of the base body 42 . The base body 42 has a body cavity 421 . The counterweight 5 is located in the body cavity 421 . The center of gravity of the counterweight 5 is located on the axis of the bearing 6 .

[0100] The base tail portion 41 has a hollow tail cavity 411 , and the base head portion 43 has a hollow head cavity 431 .

[0101] In this embodiment, the floating base 4 is divided into a base tail portion 41, a base body portion 42 and a base head portion 43. The base tail portion 41 and the base head portion 43 are narrower than the base body portion 42.

[0102] The connecting column 44 is connected to the top of the base body 42, and the base body 42 has a body cavity 421 for placing the counterweight 5. The center of gravity of the counterweight 5 is on the axis of the bearing 6, which is conducive to improving the stability of the floating base 4 when rotating.

[0103] The base tail 41 has a hollow tail cavity 411 , and the base head 43 has a hollow head cavity 431 , which reduces the structural weight at the front and rear ends, facilitates swinging with the water flow, and can also increase the buoyancy of the floating base 4 .

[0104] In one embodiment, if Figure 7-10 As shown, in the direction from back to front, the width of the top surface of the base tail portion 41 is equal, the width of the top surface of the base main body portion 42 gradually widens, and the width of the top surface of the base head portion 43 gradually narrows.

[0105] In a direction from top to bottom, the widths of the base tail portion 41 , the base main body portion 42 and the base head portion 43 gradually become narrower.

[0106] In this embodiment, the floating base 4 is roughly in the shape of a ship, the floating base 4 is wide at the top and narrow at the bottom, and the base body 42 and the base head 43 are streamlined. The width of the top surface of the base tail 41 is equal, and the two sides of the base tail 41 are inclined surfaces. When the two sides are impacted by water flow unequally, the base head 43 will swing and adjust adaptively.

[0107] In one embodiment, if Figure 11-12 and Figure 17-19 As shown, the top surface of the floating base 4 is provided with a sliding floating plate 7 on both sides of the connecting column 44 .

[0108] The sliding floating plate 7 is slidably connected to the floating base 4 , and a guide structure 9 is installed between the sliding floating plate 7 and the floating base 4 .

[0109] A driving mechanism 8 for driving the two sliding floating plates 7 to slide is also installed on the floating base 4 .

[0110] The driving mechanism 8 includes a power unit 81 and two sets of transmission units 82 connected to opposite sides of the power unit 81 .

[0111] The connecting column 44 has a mounting cavity 442 in which the power unit 81 is mounted. The transmission unit 82 passes through the mounting cavity 442 and is connected to the sliding floating plate 7 .

[0112] The transmission unit 82 is located below the bearing 6 .

[0113] When the sliding floating plate 7 is in the initial state, the sliding floating plate 7 is located on the top of the floating base 4 .

[0114] When the sliding floating plate 7 is in the extended state, the sliding floating plate 7 at least partially extends out of the outer side of the floating base 4 .

[0115] In this embodiment, two sliding floating plates 7 are mounted on the top of the floating base 4, and the two sliding floating plates 7 are arranged on the left and right sides of the connecting column 44. Each sliding floating plate 7 is connected to the floating base 4 with a guide structure 9, which extends along the width direction of the floating base 4 and is used to guide the sliding floating plate 7 to slide on the floating base 4.

[0116] The two sliding floating plates 7 are driven to extend and retract by a driving mechanism 8. The driving mechanism 8 includes a power unit 81 and two sets of transmission units 82. The power unit 81 can be a motor or a piston, and the transmission unit 82 can be a lead screw, a piston rod, etc.

[0117] The connecting column 44 has a mounting cavity 442, and the cavity opening of the mounting cavity 442 is located at the top surface of the connecting column 44. The power unit 81 is fixedly installed in the mounting cavity 442. The transmission unit 82 is located below the bearing 6, and the transmission unit 82 passes through the mounting cavity 442 and is connected to the sliding floating plate 7, so as to drive the sliding floating plate 7 to slide.

[0118] The driving mechanism 8 can be connected to the controller on the platform truss 1 through a wire, and the controller is connected to the control system in the ground observation room. The user can control the controller of the driving mechanism 8 through the control system, and then control the switch of the driving mechanism 8.

[0119] When the sliding floating plate 7 is in the initial state, the sliding floating plate 7 is on the top of the floating base 4. At this time, the buoyancy of the offshore floating platform mainly comes from the floating pipe 3 and the floating base 4.

[0120] When one side of the offshore floating platform is observed to tilt downward, the two sliding floating plates 7 on the floating base 4 on that side can be controlled to extend through the driving mechanism 8 to increase the buoyancy of the floating base 4 on that side to maintain the balance of the offshore floating platform.

[0121] In one embodiment, if Figure 17-22 As shown, the power unit 81 is a motor 811 , and the transmission unit 82 includes a transmission shaft 821 and a screw rod 822 connected to the transmission shaft 821 .

[0122] An internal thread hole 71 is provided in the sliding floating plate 7 , and a cavity wall through hole 444 for the transmission shaft 821 to pass through is provided on the cavity wall 443 of the installation cavity 442 .

[0123] One end of the transmission shaft 821 is connected to the motor 811 , and a sealing ring 445 is installed between the transmission shaft 821 and the cavity wall through hole 444 .

[0124] The screw rod 822 is connected to the internal threaded hole 71 .

[0125] In this embodiment, the power unit 81 uses a motor 811, which can be encapsulated in a waterproof shell and then installed in the installation cavity 442. The motor 811 uses a servo motor or a stepper motor. The transmission unit 82 includes a transmission shaft 821 and a screw 822. The cavity walls 443 on both sides of the installation cavity 442 are respectively provided with cavity wall through holes 444. One end of the transmission shaft 821 in each transmission unit 82 is connected to the motor 811, and the other end passes through the cavity wall through hole 444 and is connected to the screw 822. The transmission shaft 821 and the cavity wall through hole 444 are sealed by a sealing ring 445.

[0126] An internal threaded hole 71 is provided at a position of the sliding floating plate 7 corresponding to the screw rod 822 , and the screw rod 822 is connected to the internal threaded hole 71 .

[0127] When the motor 811 rotates forward, the two transmission shafts 821 on both sides drive the screw rods 822 to rotate, and the screw rods 822 rotate in the internal threaded holes 71, driving the sliding floating plates 7 on both sides to extend outward. When the motor 811 rotates reversely, the sliding floating plates 7 on both sides are driven to return to the top of the floating base 4.

[0128] In one embodiment, if Figure 13-14 and Figure 18-20 As shown, the inner edge of the sliding floating plate 7 has a floating plate flange 72 protruding downward, and the outer edge of the floating base 4 has a base flange 45 protruding upward.

[0129] When the sliding floating plate 7 is in the initial state, the edge of the sliding floating plate 7 rests on the base flange 45 .

[0130] When the sliding floating plate 7 is extended to the limit position, the floating plate flange 72 contacts the base flange 45 .

[0131] In this embodiment, a base flange 45 protruding upward is arranged on the outer edge of the floating base 4, and a floating plate flange 72 protruding downward is arranged on the inner edge of the sliding floating plate 7, so as to provide a limit when the sliding floating plate 7 is extended to the limit position.

[0132] When the sliding floating plate 7 is in the initial state, the edge of the sliding floating plate 7 rests on the base flange 45 , and the floating plate flange 72 rests on the top surface of the floating base 4 .

[0133] When the sliding floating plate 7 is extended, the floating plate flange 72 slides outward on the top surface of the floating base 4 until it contacts the base flange 45 . The floating plate flange 72 is blocked by the base flange 45 , and the sliding floating plate 7 is extended to the limit position.

[0134] In one embodiment, if Figure 15-16 As shown, the guide structure 9 includes a T-shaped guide groove 91 and a T-shaped guide rail 92 which is clearance-matched with the T-shaped guide groove 91 .

[0135] The T-shaped guide groove 91 is arranged on the bottom surface of the sliding floating plate 7 , and the T-shaped guide rail 92 is arranged on the top surface of the floating base 4 ; or, the T-shaped guide rail 92 is arranged on the bottom surface of the sliding floating plate 7 , and the T-shaped guide groove 91 is arranged on the top surface of the floating base 4 .

[0136] The guide structure 9 adopts a combined structure of a T-shaped guide groove 91 and a T-shaped guide rail 92, which can guide the sliding floating plate 7 to move linearly and prevent the sliding floating plate 7 from separating from the floating base 4 under the action of buoyancy.

[0137] An assembly method of the guide structure 9 is as follows: a T-shaped guide groove 91 is provided on the bottom surface of the sliding floating plate 7 , and a T-shaped guide rail 92 is provided on the top surface of the floating base 4 .

[0138] Another assembly method of the guide structure 9 is as follows: the T-shaped guide rail 92 is arranged on the bottom surface of the sliding floating plate 7 , and the T-shaped guide groove 91 is arranged on the top surface of the floating base 4 .

[0139] In one embodiment, if Fig.17 As shown, the anti-rotation guide column 25 has a wiring channel 252 for arranging wires, conductors, etc. connected to the motor 811.

[0140] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0141] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of the present invention, which should also be considered as the protection scope of the present invention.

Claims

1. A floating platform at sea, It is characterized in that It includes a platform truss, a steering mechanism, a floating tube and a shuttle-shaped floating base; The platform truss has a truss bottom plate; The steering mechanism comprises an upper ring fixedly connected below the truss bottom plate and a lower ring pivotally connected to the upper ring; The bottom surface of the lower circular ring is uniformly provided with anti-rotation guide columns capable of preventing the floating tube from rotating, each of the anti-rotation guide columns is sleeved with a floating tube, the floating tube is slidably connected to the anti-rotation guide columns, and the floating tube can slide up and down relative to the anti-rotation guide columns; The lower end of each floating tube is pivotally connected to a floating base, and a counterweight is provided in the floating base; The floating tube and the floating base can revolve together with the lower circular ring, and the floating base can rotate independently relative to the floating tube.

2. The offshore floating platform according to claim 1, It is characterized in that An intermediate ring is installed between the upper ring and the lower ring; The intermediate ring has a plurality of assembly holes evenly distributed along the circumferential direction, each of the assembly holes is provided with a rolling ball, and the rolling ball protrudes from the upper and lower surfaces of the intermediate ring; The bottom surface of the upper circular ring has an upper circular groove, and the top surface of the lower circular ring has a lower circular groove; A portion of the intermediate ring is assembled in the upper annular groove, and another portion of the intermediate ring is assembled in the lower annular groove. The rolling ball contacts the groove bottom of the upper annular groove and the groove bottom of the lower annular groove respectively.

3. The offshore floating platform according to claim 1, It is characterized in that The top of the floating base is provided with a connecting column, the connecting column is inserted into the lower end of the floating tube, and a bearing is assembled between the floating tube and the connecting column.

4. The offshore floating platform according to claim 3, It is characterized in that The floating base comprises a base tail portion, a base main portion and a base head portion which are connected in sequence; The connecting column is connected to the upper part of the base body, the base body has a body cavity, the counterweight is in the body cavity, and the center of gravity of the counterweight is on the axis of the bearing; The base tail portion has a hollow tail cavity, and the base head portion has a hollow head cavity.

5. The offshore floating platform according to claim 4, It is characterized in that In the direction from the back to the front, the width of the top surface of the base tail portion is equal, the width of the top surface of the base body portion gradually widens, and the width of the top surface of the base head portion gradually narrows; In a direction from top to bottom, the widths of the base tail portion, the base main body portion and the base head portion gradually narrow.

6. The offshore floating platform according to claim 3, It is characterized in that The top surface of the floating base is provided with a sliding floating plate on both sides of the connecting column; The sliding floating plate is slidably connected to the floating base, and a guide structure is installed between the sliding floating plate and the floating base; The floating base is also provided with a driving mechanism for driving the two sliding floating plates to slide; The driving mechanism includes a power unit and two sets of transmission units connected to opposite sides of the power unit; The connecting column has an installation cavity, the power unit is installed in the installation cavity, and the transmission unit passes through the installation cavity and is connected to the sliding floating plate; The transmission unit is located below the bearing; When the sliding floating plate is in an initial state, the sliding floating plate is on the top of the floating base; When the sliding floating plate is in an extended state, the sliding floating plate at least partially extends out of the outer side of the floating base.

7. The offshore floating platform according to claim 6, It is characterized in that The power unit is a motor, and the transmission unit includes a transmission shaft and a screw connected to the transmission shaft; The sliding floating plate is provided with an internal threaded hole, and the cavity wall of the installation cavity is provided with a cavity wall through hole for the transmission shaft to pass through; One end of the transmission shaft is connected to the motor, and a sealing ring is installed between the transmission shaft and the through hole of the cavity wall; The screw is connected to the internal threaded hole.

8. The offshore floating platform according to claim 6, It is characterized in that The inner edge of the sliding floating plate has a floating plate flange protruding downward, and the outer edge of the floating base has a base flange protruding upward; When the sliding floating plate is in an initial state, the edge of the sliding floating plate rests on the base flange; When the sliding floating plate is extended to the limit position, the floating plate flange contacts the base flange.

9. The offshore floating platform according to claim 6, It is characterized in that The guide structure comprises a T-shaped guide groove and a T-shaped guide rail which is clearance-matched with the T-shaped guide groove; The T-shaped guide groove is arranged on the bottom surface of the sliding floating plate, and the T-shaped guide rail is arranged on the top surface of the floating base; or, the T-shaped guide rail is arranged on the bottom surface of the sliding floating plate, and the T-shaped guide groove is arranged on the top surface of the floating base.

10. The offshore floating platform according to claim 6, It is characterized in that The anti-rotation guide column has a wiring channel therein.

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