Three-axis rotating floater for offshore renewable energy comprehensive platform

Abstract

The utility model discloses a three-axis rotating floater for an offshore renewable energy comprehensive platform, which comprises a vertical shaft, an inner ring, a middle ring and a floater, the vertical shaft is vertically arranged, the inner ring is horizontally mounted on the vertical shaft through a bearing, a longitudinal shaft extending outwards along the radial direction is arranged on the periphery of the inner ring, a first shaft sleeve is arranged on the inner periphery of the middle ring, and a second shaft sleeve is arranged on the middle ring. The middle ring is installed on the longitudinal shaft through a first shaft sleeve, a transverse shaft extending outwards in the radial direction is arranged on the periphery of the middle ring, the transverse shaft is perpendicular to the longitudinal shaft, a second shaft sleeve is arranged on the floater, and the floater is installed on the transverse shaft through the second shaft sleeve, so that the floater rotates around the transverse shaft, is driven by the middle ring to rotate around the longitudinal shaft and is driven by the inner ring to rotate around the vertical shaft. The float is simple in structure and convenient to install, horizontal lateral force generated by surges is counteracted through rotation of the float, impact on the connecting portion is reduced, the risk of failure of the connecting portion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of wave power generation technology, and in particular to a three-axis rotating float for a marine renewable energy integrated platform. Background Technology

[0002] The offshore renewable energy integrated platform is a comprehensive offshore platform that utilizes wave energy generation technology to power all equipment on the platform. The basic principle of the wave energy generation system is to install multiple drive rods extending towards the sea surface around the platform. The overhanging ends of these drive rods are connected to floats, which float on the sea surface. When waves arrive, the floats rise and fall with the sea surface, causing the drive rods to swing up and down. The drive rods then drive the generator to generate electricity through components such as gearboxes and speed increasers. During long-term use, it has been found that the connection between the float and the drive rods is prone to loosening or breakage. The main reason is that when waves arrive, they generate a horizontal lateral force on the float, which impacts the connection between the drive rods and the float.

[0003] Therefore, how to create a new type of integrated offshore renewable energy platform using a three-axis rotating float to counteract the horizontal lateral force of swells is one of the important research and development topics at present. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a three-axis rotating float for a marine renewable energy integrated platform, which can rotate in any direction within a specified angle, and the rotation of the float can counteract the horizontal lateral force of the swell, reduce the impact on the connection parts, and extend the service life, thereby overcoming the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a three-axis rotating float for a marine renewable energy integrated platform, including a vertical shaft, an inner ring, a middle ring, and a float;

[0006] The vertical shaft is set vertically, and the inner ring is horizontally mounted on the vertical shaft through a bearing, so that the inner ring can rotate around the vertical shaft. The outer circumference of the inner ring is provided with a longitudinal shaft extending outward in a radial direction.

[0007] The inner circumference of the middle ring is provided with a first bushing, and the middle ring is mounted on the longitudinal axis through the first bushing, so that the middle ring can rotate around the longitudinal axis of the inner ring. The outer circumference of the middle ring is provided with a transverse axis extending outward in a radial direction, and the transverse axis is perpendicular to the longitudinal axis.

[0008] The float is provided with a second bushing, and the float is installed on the horizontal axis through the second bushing, so that the float can rotate around the horizontal axis, and is driven by the middle ring to rotate around the vertical axis, and is driven by the inner ring to rotate around the vertical axis.

[0009] As an improvement of this utility model, the top of the float has a hemispherical recess, and the second bushing is disposed on the inner wall of the recess, so that the inner ring and the middle ring are both located in the recess.

[0010] Furthermore, the lower part of the float is inverted conical in shape, with a columnar rounded protrusion at the bottom.

[0011] With this design, the present invention has at least the following advantages:

[0012] 1. By setting up a vertical shaft, inner ring, and middle ring, the float itself can rotate around the horizontal axis on the middle ring. At the same time, it can also be driven by the middle ring to rotate around the vertical axis of the inner ring, and at the same time, it can be driven by the inner ring to rotate around the vertical shaft. This allows it to rotate in any direction within a specified angle. The rotation of the float can offset some of the lateral impact force, reduce the risk of failure of the connection parts, and extend its service life.

[0013] 2. The lower part of the float is inverted cone-shaped, and the bottom has a convex protrusion with a cylindrical round head, which further reduces the influence of lateral forces. Attached Figure Description

[0014] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 This is a disassembled structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the usage state of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1. Vertical shaft; 2. Inner ring; 21. Longitudinal shaft; 3. Middle ring; 31. Horizontal shaft; 32. First bushing; 4. Float; 41. Second bushing; 5. Bearing. Detailed Implementation

[0019] Please see Figures 1 to 3 This utility model provides a three-axis rotating float for a marine renewable energy integrated platform, including a vertical shaft 1, an inner ring 2, a middle ring 3, and a float 4.

[0020] The vertical shaft 1 is vertically arranged, and the inner ring 2 is circular and horizontally mounted on the vertical shaft 1 through the bearing 5, so that the inner ring 2 can rotate around the vertical shaft 1. The outer circumference of the inner ring 2 is provided with a longitudinal shaft 21 extending radially outward. In this embodiment, three spokes are also provided between the inner ring 2 and the outer ring of the bearing 5.

[0021] The middle ring 3 is also annular and located outside the inner ring 2. A first bushing 32 is provided on the inner circumference of the middle ring 3, and the middle ring 3 is mounted on the longitudinal axis 21 through the first bushing 32, so that the middle ring 3 can rotate around the longitudinal axis 21 of the inner ring 2. A transverse axis 31 extending radially outward is provided on the outer circumference of the middle ring 3, and the transverse axis 31 is perpendicular to the longitudinal axis 21.

[0022] The float 4 is a closed shell with an internal cavity. The top of the float 4 has a hemispherical inward recess. A second bushing 41 is provided on the inner wall of the recess. The float 4 is installed on the horizontal shaft 31 of the middle ring 3 through the second bushing 41.

[0023] After installation, the inner ring 2 and the middle ring 3 are both located in the recess at the top of the float 4. The float 4 can rotate around the horizontal axis 31, or be driven by the middle ring 3 to rotate around the vertical axis 21, or be driven by the inner ring 2 to rotate around the vertical axis 1, thereby achieving rotation in any direction.

[0024] It should be noted that the horizontal rotation angle of float 4 (around vertical axis 1) is 360°, but the vertical rotation angle (around longitudinal axis 21 or horizontal axis 31) needs to be limited. If the rotation angle is too large, it will not only cause the middle ring 3 or float 4 to interfere with vertical axis 1, but also lose some buoyancy. The rotation angle can be limited by adding a limit or adding damping.

[0025] The lower part of the float 4 is inverted cone-shaped to minimize the influence of horizontal lateral forces. The bottom of the float 4 has a columnar rounded protrusion, which increases stability and fine-tunes the center of gravity. Ideally, most of the float 4 floats above the sea surface, while a small part of the bottom and the protrusion are submerged below the sea surface.

[0026] This invention has a simple structure and is easy to install. It uses the rotation of the float to counteract the horizontal lateral force generated by the surging waves, reducing the impact on the connection parts, lowering the risk of connection failure, and extending the service life.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes or alterations made by those skilled in the art using the above-disclosed technical content shall fall within the protection scope of the present utility model.

Claims

1. A three-axis rotating float for an integrated offshore renewable energy platform, characterized in that, Includes vertical shaft, inner ring, middle ring, and float; The vertical shaft is set vertically, and the inner ring is horizontally mounted on the vertical shaft through a bearing, so that the inner ring can rotate around the vertical shaft. The outer circumference of the inner ring is provided with a longitudinal shaft extending outward in a radial direction. The inner circumference of the middle ring is provided with a first bushing, and the middle ring is mounted on the longitudinal axis through the first bushing, so that the middle ring can rotate around the longitudinal axis of the inner ring. The outer circumference of the middle ring is provided with a transverse axis extending outward in a radial direction, and the transverse axis is perpendicular to the longitudinal axis. The float is provided with a second bushing, and the float is installed on the horizontal axis through the second bushing, so that the float can rotate around the horizontal axis, and is driven by the middle ring to rotate around the vertical axis, and is driven by the inner ring to rotate around the vertical axis.

2. The three-axis rotating float for an integrated offshore renewable energy platform according to claim 1, characterized in that, The top of the float has a hemispherical recess, and the second bushing is disposed on the inner wall of the recess, so that the inner ring and the middle ring are both located within the recess.

3. A three-axis rotating float for an integrated offshore renewable energy platform according to claim 1, characterized in that, The lower part of the float is inverted cone-shaped, and the bottom has a columnar round protrusion.

Images