Wave resistant device of platform lifting system

Abstract

The utility model discloses a wave-resistant device of a platform lifting system, which comprises a hull platform, a plurality of pile legs are arranged on the hull platform, each pile leg is of a triangular truss structure, three chord members serve as a main frame, crossed supporting rods are arranged among the chord members, and wave-resistant mechanisms are arranged at the upper ends and the lower ends of the supporting rods. The two ends of the wave-resistant mechanism are fixed on the chord members, a buffer groove is formed below the wave-resistant mechanism, a flow guide groove is formed above the wave-resistant mechanism, the buffer groove is in a semi-arc shape, and the flow guide groove is in a 1 / 4 arc shape; the anti-wave pile leg is simple in structure and novel in design, the impact of sea waves on the pile leg is buffered by arranging the anti-wave mechanism, the lower side of the anti-wave mechanism is provided with the semi-arc-shaped buffer groove, the upper side of the anti-wave mechanism is provided with the 1 / 4 arc-shaped flow guide groove, and normal operation of a lifting system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power installation platforms, in particular to a wave prevention device for a platform lifting system. Background Technique

[0002] In the design of self-elevating offshore wind power installation platforms, the lifting system is generally designed near the side. The distance between the pile shoes and the outer plate is only about 150 mm. If the outer plate at the pile shoe is continuous and the stiffeners of the side outer plate are arranged inside the ship body, the pile shoes will be very close to the internal stiffeners, which may cause interference between the pile shoes and the internal stiffeners of the outer plate during the operation of the lifting system. In addition, during the shipbuilding and launching process, if the outer plate at the pile shoe is continuous, it will also affect the launching. Therefore, the side outer plates at the pile shoes of self-elevating offshore wind power installation platforms are all designed to be open. However, the open side outer plates will expose the lifting system to the waves.

[0003] Whether the ship is sailing or has reached the wind power installation positioning point, the waves are constantly hitting the pile legs in the lifting system. Especially before the installation process, the lifting system will drive the pile legs to descend to complete the stabilization of the installation ship on the sea surface. The beating of the waves on the pile legs will affect the accuracy of the lifting system during operation. Summary of the Invention

[0004] The purpose of the utility model is to provide a wave prevention device for a platform lifting system to solve the problems mentioned in the above background technique. To achieve the above purpose, the utility model provides the following technical solution: A wave prevention device for a platform lifting system includes a ship body platform. There are multiple pile legs on the ship body platform. The pile legs are of triangular truss structure, with three chord members as the main framework. Cross braces are arranged between the chord members. Wave prevention mechanisms are arranged at both the upper and lower ends of the braces. Both ends of the wave prevention mechanism are fixed on the chord members. A buffer groove is opened below the wave prevention mechanism, and a diversion groove is arranged above it. The buffer groove is semi-circular in shape, and the diversion groove is 1 / 4 circular in shape.

[0005] Preferably, multiple flow dividing plates are arranged on the diversion groove to divide the diversion groove into multiple flow channels.

[0006] Preferably, symmetrical racks are arranged on both sides of each chord member, and lifting mechanisms are arranged on both sides of the racks.

[0007] Preferably, the lifting mechanism is fixed inside the ship body platform and includes multiple lifting units. Each lifting unit is connected with a gear, and each gear meshes with the rack.

[0008] Preferably, pile shoes are arranged at the bottom of the pile legs.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model has a novel design. By using a reasonable mechanical structure, it ingeniously exploits the inherent potential of each element. Through the setting of a wave prevention mechanism to buffer the impact of sea waves on the pile legs, a semi-circular buffer groove is designed on the lower side of the wave prevention mechanism. When the sea waves beat against the pile legs, the flowing direction of the seawater with a radial impact is changed into an arc shape. Through the action of centrifugal force, the seawater is thrown out of the buffer groove in the clockwise direction. On the upper side of the wave prevention mechanism, a 1 / 4 circular arc-shaped diversion groove is designed, which can divert the seawater dripping from the buffer groove of the upper wave prevention mechanism above, avoid water accumulation on the upper part of the wave prevention mechanism, disperse the radial force received by the pile legs, and thus ensure the normal operation of the lifting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0011] Figure 2 is a schematic diagram of the partial structure of the pile leg in the present utility model;

[0012] Figure 3 is a sectional view of the pile leg structure in the present utility model;

[0013] Figure 4 is a schematic diagram of the wave prevention mechanism structure in the present utility model;

[0014] Figure 5 is a side view of the wave prevention mechanism in the present utility model;

[0015] Figure 6 is a schematic diagram of the lifting unit structure in the present utility model;

[0016] In the figure, hull platform - 1, pile leg - 2, chord member - 21, support rod - 22, wave prevention mechanism - 3, buffer groove - 31, diversion groove - 32, splitter plate - 33, chord member - 21, rack - 23, lifting mechanism - 4, lifting unit - 41, gear - 42, pile shoe - 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figure 1-4 , the present utility model provides a technical solution: A wave prevention device for a platform lifting system, including a hull platform 1, a plurality of pile legs 2 are provided on the hull platform 1, and a pile shoe 5 is provided at the bottom of the pile legs 2.

[0019] The leg 2 is a triangular truss structure, with three chord members 21 as the main framework. Cross braces 22 are provided between the chord members 21. Anti-wave mechanisms 3 are provided at both the upper and lower ends of the cross braces 22. Both ends of the anti-wave mechanism 3 are welded to the chord member 21. A buffer groove 31 is provided below the anti-wave mechanism 3, and a diversion groove 32 is provided above it. Both the upper and lower structures can buffer the impact of ocean waves on the leg 2.

[0020] The buffer groove 31 is semi-circular. When ocean waves strike the leg 2, the flow direction of the radially impacting seawater is changed to a circular arc shape. Through the action of centrifugal force, the seawater is thrown out of the buffer groove 31 in the clockwise direction.

[0021] Since the thrown seawater may drop onto the upper part of the lower anti-wave mechanism 3, the diversion groove 32 is designed as a 1 / 4 circular arc shape, which can divert the seawater dropping from the buffer groove of the upper anti-wave mechanism to avoid water accumulation on the upper part of the anti-wave mechanism.

[0022] A plurality of raised flow dividing plates 33 are provided on the diversion groove 32, dividing the diversion groove 32 into a plurality of flow channels to accelerate drainage.

[0023] Symmetrical racks 23 are provided on both sides of each chord member 21. Lifting mechanisms 4 are provided on both sides of the racks 23. The lifting mechanisms 4 are fixed inside the hull platform 1 and include a plurality of lifting units 41. Each lifting unit 41 is connected to a gear 42, and each gear 42 meshes with the rack 23.

[0024] Each gear 42 meshes with the rack 23. By driving the rotation of the gear 42 through the lifting unit 41, the rack 23 is driven to move, and the gears 42 on both sides of the rack 23 rotate in opposite directions.

[0025] When the gear 42 on the left side of the rack 22 rotates clockwise and the gear 42 on the right side of the rack 22 rotates counterclockwise, the hull platform 1 rises and the leg 2 descends; when the gear 42 on the left side of the rack 22 rotates counterclockwise and the gear 42 on the right side of the rack 22 rotates clockwise, the hull platform 1 descends and the leg 2 rises.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wave-proof device for a platform lifting system, comprising a hull platform (1), characterized in that: There are multiple leg columns (2) provided on the hull platform (1). The leg columns (2) are of a triangular truss structure, with three chord members (21) serving as the main framework. Cross braces (22) are provided between the chord members (21). Wave prevention mechanisms (3) are provided at both the upper and lower ends of the cross braces (22). Both ends of the wave prevention mechanism (3) are fixed to the chord members (21). A buffer groove (31) is opened below the wave prevention mechanism (3), and a diversion groove (32) is provided above it. The buffer groove (31) is semi-circular, and the diversion groove (32) is quarter-circular.

2. The wave prevention device of the platform lifting system according to claim 1, characterized in that: A plurality of protruding flow dividing plates (33) are provided on the diversion groove (32), dividing the diversion groove (32) into a plurality of flow channels.

3. The wave protection device of the platform lifting system according to claim 1, characterized in that: Symmetrical racks (23) are provided on both sides of each chord member (21), and lifting mechanisms (4) are provided on both sides of the racks (23).

4. The wave protection device of the platform lifting system according to claim 1, characterized in that: The lifting mechanisms (4) are fixed inside the hull platform (1), including a plurality of lifting units (41). Each lifting unit (41) is connected to a gear (42), and each gear (42) meshes with the rack (23).

5. The anti-wave device of the platform lifting system according to claim 1, characterized in that: A pile shoe (5) is provided at the bottom of the leg column (2).

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