Self-elevating and self-navigation marine wind power installation platform lifting system

Abstract

The invention discloses a self-elevating and self-navigation marine wind power installation platform lifting system which comprises a main ship body and pile legs, a plurality of lifting units are arranged on the edge of the main ship body, the lifting units are connected with the pile legs to drive the main ship body to move up and down along the pile legs, pile shoes of hollow structures are arranged at the bottoms of the pile legs, and through holes are formed in the pile shoes. A groove of a threaded structure is formed in the inner wall of the pile shoe, a lifting rod is inserted into the pile shoe in a penetrating mode, a rack is arranged on the rod wall of the lifting rod and corresponds to the through hole, the bottom end of the lifting rod is rotationally connected with a rotating block, a sliding block is arranged on the side wall of the rotating block and embedded in the groove, and a drill bit is connected to the lower portion of the rotating block. A rack driving assembly is mounted on the outer wall of the pile shoe; the rack driving assembly drives the lifting rod to push the rotating block, so that the sliding block slides along the groove of the threaded structure, telescopic rotation is achieved, the drill bit is smoothly screwed into the seabed, the drill bit is deeply inserted into the seabed, and the stability of the whole main hull is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power installation platforms, and in particular to a self-elevating and self-navigating offshore wind power installation platform lifting system. Background Art

[0002] The offshore wind power installation platform is used to install offshore wind turbines, which has a good role in promoting the development of offshore wind power. The main hull of the offshore wind power includes at least the platform, truss pile legs, pile shoes and gear rack lifting system. The truss pile legs and pile shoes are usually fixedly connected as one, and the platform and the truss pile legs are detachably connected. The truss pile legs and pile shoes are inserted into the seabed to support the platform, and the gear rack lifting system controls the platform to move up and down.

[0003] The offshore wind power installation platform will be affected by strong winds and waves during operation. In order to overcome the changeable weather at sea and ensure the stability of the main hull, the prior art publication number CN110042818A discloses an offshore wind power main hull which also includes a sinking pad, a round pile leg and a connecting assembly. The round pile leg is connected to the truss pile leg, the sinking pad is fixed to the round pile leg, and the distance between one end of the round pile leg and a surface of the sinking pad away from the truss pile leg is greater than the thickness of the sinking pad in the axial direction of the round pile leg. The sinking pad can be smoothly inserted into the seabed through the conical protrusion on the round pile leg, so as to achieve good fixation of the platform position. However, when the pile shoe is inserted into the seabed, the condition of the seabed cannot be detected. The above-mentioned method of directly inserting into the seabed is more laborious, so it cannot be inserted smoothly every time, which will indirectly affect the firmness of the pile leg and thus affect the stability of the main hull. Summary of the invention

[0004] The object of the present invention is to provide a self-elevating and self-navigating offshore wind power installation platform lifting system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-elevating and self-navigating offshore wind power installation platform lifting system, comprising a main hull and pile legs, a plurality of lifting units are arranged on the edge of the main hull, the lifting units are connected with the pile legs to drive the main hull to move up and down along the pile legs, a pile shoe with a hollow structure is arranged at the bottom of the pile leg, a through hole is arranged on the pile shoe, a groove with a threaded structure is arranged on the inner wall of the pile shoe, a lifting rod is inserted into the pile shoe, a rack is arranged on the rod wall of the lifting rod, the rack corresponds to the through hole, a rotating block is rotatably connected to the bottom end of the lifting rod, a sliding block is arranged on the side wall of the rotating block, the sliding block is embedded in the groove, a drill bit is connected below the rotating block, and a plurality of blades are arranged on the outer wall of the drill bit; A rack drive assembly is installed on the outer wall of the pile shoe, and the rack drive assembly is engaged with the rack at the through hole.

[0006] Preferably, the driving assembly includes a mounting frame, which is fixed on the outer wall of the pile shoe, and a bearing frame is provided on the mounting frame. A bearing is installed in the bearing frame, and a rotating shaft is inserted in the bearing. A first gear and a second gear are respectively provided at both ends of the rotating shaft, and the first gear is meshed with the transmission assembly, and the second gear is meshed with the rack at the through hole.

[0007] Preferably, the transmission assembly includes a driving gear and a driven gear, wherein the driving gear and the driven gear are mounted on a mounting frame, and the driving gear and the driven gear are located on the same horizontal line. A chain is sleeved between the driving gear and the driven gear, and the first gear is located below the chain and meshes with the chain; The driving gear is connected to the rotating motor.

[0008] Preferably, the sliding block comprises a roller and a roller shaft, the roller is fixed to the side wall of the rotating block through the roller shaft, and the roller is embedded in the groove.

[0009] Preferably, the pile leg is a triangular truss pile leg, and the triangular truss pile leg includes three side tubes, and second racks are vertically arranged on both sides of each side tube, and the lifting unit is engaged with the triangular truss pile leg.

[0010] Preferably, the lifting unit includes a base, the base is fixed on the main hull, three lifting gear boxes are provided on the base, each of the lifting gear boxes is respectively engaged with the second rack on the corresponding side pipe, and the lifting gear boxes are driven by a power unit.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and a novel design, and drives the lifting rod to push the rotating block through the rack drive assembly, so that the slider slides along the groove of the threaded structure, thereby realizing telescopic rotation. In this way, regardless of any seabed environment, the drill bit can be smoothly screwed into the seabed, and the drill bit can be deeply inserted into the seabed to improve the firmness of the pile legs, thereby ensuring the stability of the entire main hull. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a top view schematic diagram of the overall structure of the present invention; Figure 2 It is a side view schematic diagram of the overall structure of the present invention; Figure 3 Schematic diagram of the internal structure of the pile shoe of the present invention; Figure 4 It is a schematic top view of the structure of the driving assembly of the present invention; Figure 5 It is a schematic side view of the structure of the transmission assembly of the present invention; Figure 6This is a schematic diagram of the connection structure between the rotating block and the drill bit of the present invention; Figure 7 It is a structural schematic diagram of the triangular truss pile leg of the present invention; Figure 8 It is a schematic diagram of the structure in which the lifting unit of the present invention is engaged with the legs of the triangular truss; Fig. 9 It is a schematic diagram of the connection between the lifting gear box and the side pipe of the present invention; Fig.10 Schematic diagram of the lifting gear box of the present invention when it moves on the side pipe, Figure (a) is a schematic diagram when it moves upward, and Figure (b) is a schematic diagram when it moves downward; In the figure: main hull-1, pile leg-2, side pipe-21, second rack-22, lifting unit-3, base-31, lifting gear box-32, power unit-33, pile shoe-4, through hole-41, groove-42, lifting rod-5, rack-51, rotating block-52, slider-53, roller-531, roller shaft-532, drill bit-54, blade-541, rack drive assembly-6, mounting frame-61, bearing frame-62, bearing-63, rotating shaft-64, first gear-65, second gear-66, transmission assembly-67, driving gear-671, driven gear-672, chain-673, rotating motor-674. DETAILED DESCRIPTION

[0013] 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 described embodiments 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.

[0014] See also Figure 1-2 The present invention provides a technical solution: a self-elevating and self-navigating offshore wind power installation platform lifting system, comprising a main hull 1 and pile legs 2, a plurality of pile legs 2 are inserted at the edge of the main hull 1, and then the same number of lifting units 3 are installed along the edge of the main hull 1, and the lifting units 3 are connected to the pile legs 2. When the main hull is sailed to the designated sea, the pile legs 2 are driven downward by the lifting units 3 until the bottom of the pile legs are inserted into the seabed for fixation. After the pile legs are inserted into the seabed, the lifting unit 3 can also drive the main hull 1 to move up and down along the pile legs 2.

[0015] In order to ensure the firmness of the pile legs during insertion, Figure 3As shown, a pile shoe 4 with a hollow structure can be provided at the bottom of the pile leg 2, and a through hole 41 can be provided on the pile shoe 4, and a groove 42 with a threaded structure can be provided on the inner wall of the pile shoe 4, and then the lifting rod 5 is inserted into the inside of the pile shoe 4, and it is ensured that the rack 51 provided on the rod wall of the lifting rod 5 corresponds to the through hole 41, and the rack drive assembly 6 is installed on the outer wall of the pile shoe 4, and it is ensured that the rack drive assembly 6 is meshed with the rack 51 at the through hole 41, so as to drive the lifting rod 5 to move up and down; A rotating block 52 is rotatably connected to the bottom end of the lifting rod 5, and a slider 53 is provided on the side wall of the rotating block 52. The slider 53 is embedded in the groove 42. When the lifting rod pushes the rotating block downward, the slider on the side wall slides along the groove of the thread structure, thereby rotating the rotating block, that is, realizing telescopic rotation; During the rotation process, the drill bit 54 connected to the lower side of the rotating block 52 is deeply inserted into the seabed to improve the firmness of the pile legs.

[0016] See also Figure 4 The rack drive assembly 6 includes a mounting frame 61, which is fixed to the outer wall of the pile shoe 4, and a bearing frame 62 is arranged on the mounting frame 61, and then a bearing 63 is installed in the bearing frame 62, and a rotating shaft 64 is inserted into the bearing 63, and a first gear 65 and a second gear 66 are respectively arranged at both ends of the rotating shaft 64. Among them, the first gear 65 is meshed with the transmission component 67, and the second gear 66 is meshed with the rack 51 at the through hole 41. The first gear 65 is driven to rotate by the transmission component 67, and the second gear also rotates at this time. The rack is moved by the second gear, so that the lifting rod moves up and down.

[0017] See also Figure 5 The transmission assembly 67 includes a driving gear 671 and a driven gear 672. The driving gear 671 and the driven gear 672 are both mounted on the mounting frame 61, and the driving gear 671 and the driven gear 672 are located on the same horizontal line. Then the chain 673 is sleeved between the driving gear 671 and the driven gear 672, and the chain 673 is meshed with the first gear 65, and the first gear 65 is located below the chain 673; When the driving gear 671 is connected to the rotating motor 674, the chain can be driven to rotate. During the rotation of the chain, the first gear is driven to rotate, thereby driving the second gear to rotate to drive the rack, thereby moving the lifting rod up and down.

[0018] See also Figure 6The slider 53 includes a roller 531 and a roller shaft 532. The roller 531 is fixed to the side wall of the rotating block 52 through the roller shaft 532, and the roller 531 is embedded in the groove 42. The slider of this structure can reduce friction when sliding in the groove, making the telescopic rotation smoother; In addition, a plurality of blade wings 541 may be provided on the outer wall of the drill bit 54 to facilitate the drill bit to extend into the seabed.

[0019] See also Figure 7 The pile leg 2 is a triangular truss pile leg, which includes three side tubes 21. A second rack 22 is vertically arranged on both sides of each side tube 21, and a lifting unit 3 is engaged with the triangular truss pile leg to drive the main hull 1 to move up and down along the pile leg 2.

[0020] See also Figure 8-10 The lifting unit 3 includes a base 31, which is fixedly connected to the main hull 1. Three lifting gear boxes 32 are provided on the base 31. Each lifting gear box 32 is respectively engaged with the second rack 22 on the corresponding side pipe 21. The lifting gear box 32 is driven by a power unit 33, which can drive the main hull 1 to move up and down along the pile leg 2.

[0021] Working principle: The main hull of the offshore wind power plant travels to the designated wind power installation location, and then drives the pile leg 2 downward through the lifting unit 3. When the pile shoe at the bottom of the pile leg contacts the seabed, the driving assembly drives the lifting rod in the pile shoe to descend, so as to push the rotating block to move slowly downward. During this period, the slider slides along the groove of the threaded structure, which will cause the rotating block to rotate, thereby realizing the telescopic rotation of the drill bit. In this way, regardless of any seabed environment, the drill bit can be smoothly screwed into the seabed until the bottom of the pile leg is inserted into the seabed for fixation; After the pile legs are fixed, the lifting unit can drive the main hull 1 to move up and down along the pile legs 2 again.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-elevating and self-navigating offshore wind power installation platform lifting system, comprising a main hull (1) and pile legs (2), wherein a plurality of lifting units (3) are provided at the edge of the main hull (1), and the lifting units (3) are connected to the pile legs (2) to drive the main hull (1) to move up and down along the pile legs (2), characterized in that: The bottom of the pile leg (2) is provided with a pile shoe (4) with a hollow structure, a through hole (41) is provided on the pile shoe (4), a groove (42) with a threaded structure is provided on the inner wall of the pile shoe (4), a lifting rod (5) is inserted into the pile shoe (4), a rack (51) is provided on the rod wall of the lifting rod (5), the rack (51) corresponds to the through hole (41), the bottom end of the lifting rod (5) is rotatably connected to a rotating block (52), a sliding block (53) is provided on the side wall of the rotating block (52), the sliding block (53) is embedded in the groove (42), a drill bit (54) is connected below the rotating block (52), and a plurality of blades (541) are provided on the outer wall of the drill bit (54); A rack drive assembly (6) is mounted on the outer wall of the pile shoe (4), and the rack drive assembly (6) is meshed with a rack (51) at the through hole (41).

2. A self-elevating and self-navigating offshore wind power installation platform lifting system according to claim 1, characterized in that: The rack drive assembly (6) comprises a mounting frame (61), wherein the mounting frame (61) is fixed on the outer wall of the pile shoe (4), wherein a bearing frame (62) is provided on the mounting frame (61), wherein a bearing (63) is installed in the bearing frame (62), wherein a rotating shaft (64) is inserted in the bearing (63), wherein both ends of the rotating shaft (64) are respectively provided with a first gear (65) and a second gear (66), wherein the first gear (65) is meshed with the transmission assembly (67), and the second gear (66) is meshed with the rack (51) at the through hole (41).

3. A self-elevating and self-navigating offshore wind power installation platform lifting system according to claim 2, characterized in that: The transmission assembly (67) comprises a driving gear (671) and a driven gear (672), wherein the driving gear (671) and the driven gear (672) are mounted on a mounting frame (61), and the driving gear (671) and the driven gear (672) are located on the same horizontal line. A chain (673) is sleeved between the driving gear (671) and the driven gear (672); the first gear (65) is located below the chain (673) and meshes with the chain (673); The driving gear (671) is connected to the rotating motor (674).

4. The self-elevating and self-navigating offshore wind power installation platform lifting system according to claim 1 is characterized by: The slider (53) comprises a roller (531) and a roller shaft (532); the roller (531) is fixed to the side wall of the rotating block (52) via the roller shaft (532); and the roller (531) is embedded in the groove (42).

5. The self-elevating and self-navigating offshore wind power installation platform lifting system according to claim 1 is characterized by: The pile leg (2) is a triangular truss pile leg, the triangular truss pile leg comprises three side tubes (21), both sides of each side tube (21) are vertically provided with a second rack (22), and the lifting unit (3) is engaged with the triangular truss pile leg.

6. A self-elevating and self-navigating offshore wind power installation platform lifting system according to claim 5, characterized in that: The lifting unit (3) comprises a base (31), the base (31) being fixed on the main hull (1), and three lifting gear boxes (32) being provided on the base (31), each of the lifting gear boxes (32) being respectively engaged with a second rack (22) on a corresponding side pipe (21), and the lifting gear boxes (32) being driven by a power unit (33).

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