Connecting and supporting structure based on offshore wind power floating platform
By employing support and buffer components and adjustment components on offshore wind power floating platforms, and utilizing elastic connections and hydraulic adjustments, the problem of fatigue damage caused by traditional rigid connections has been solved, achieving adaptive buffering and vibration reduction effects under different sea conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHONGCHENG ELECTRICAL EQUIPMENT (SHANDONG) CO LTD
- Filing Date
- 2026-04-02
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional rigid connection methods are prone to fatigue damage due to alternating stress on offshore wind power floating platforms, and it is difficult to meet the buffer performance requirements under different sea conditions.
By employing a support and buffer assembly and an adjustment assembly, and through elastic connection and hydraulic adjustment, the buffer and vibration reduction between the support rod and the support column are achieved. The interaction between the vertical block and the abutment block is used to adjust the flow of hydraulic oil to increase the buffer stroke and adapt to different wind and wave conditions.
It effectively alleviates fatigue damage caused by alternating stress, improves the buffering and vibration reduction capabilities under different sea conditions, and achieves adaptive buffering performance adjustment.
Smart Images
Figure CN122009418A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of offshore wind power technology, and in particular to a connection support structure based on an offshore wind power floating platform. Background Technology
[0002] Offshore wind power refers to a renewable energy technology that utilizes abundant and stable wind energy resources at sea to produce clean electricity by constructing wind turbine generators in nearshore or deep-sea areas. Compared to onshore wind power, offshore wind power development does not occupy valuable land resources. In deep-sea areas, floating wind power platforms are increasingly becoming the mainstream technology, with these platforms anchored to the seabed via mooring systems.
[0003] To ensure the safe and efficient operation of wind turbine generators in dynamic marine environments, the support structure of floating platforms, especially the critical force transmission path connecting the outer pontoons to the central support column, needs to possess excellent mechanical adaptability and reliability. Currently, most traditional floating platforms use bolted connections, welding, or flange rigid fixation to directly fix the outer pontoons to the central support column into a rigid frame. However, on the sea surface, the continuous action of wind and waves causes the platform to sway constantly, generating high-frequency, high-amplitude alternating stresses at rigid joint connections, which can easily induce fatigue cracks. Once cracks initiate and propagate, they can easily lead to local failure. On the other hand, in strong winds or waves, greater buffering capacity is often required to absorb larger impact energy. Therefore, the ability to perceive and respond to actual sea conditions is necessary to meet the buffering performance requirements under different sea conditions.
[0004] Therefore, this application provides a connection support structure based on an offshore wind power floating platform to meet the requirements. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide a connection support structure based on an offshore wind power floating platform, so as to solve the problem that traditional rigid connection is prone to fatigue damage of force transmission nodes due to alternating stress, and is not easy to meet the buffer performance requirements under different sea conditions.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A connection support structure based on an offshore wind power floating platform includes a floating platform, a support column installed at the center of the floating platform, a wind power generation mechanism installed at the top of the support column, connecting frames fixedly connected to both the upper and lower sides of the support column, floats fixed at the three sharp corners of the two connecting frames, the upper ends of the three floats connected to the bottom of the floating platform, three support buffer assemblies equally spaced on the outer side of the support column, each support buffer assembly connected to the float via three support rods, the support buffer assembly serving as a buffer between the support rods and the support column, an installation plate installed at the top of a cavity opened inside the support column, a connecting ball movably connected within a groove of the installation plate, a vertical block installed at the bottom of the connecting ball via a connecting rod, and an adjustment assembly provided between the vertical block and the support buffer assembly, the adjustment assembly being used for adjusting the state of the support buffer assembly.
[0007] Optionally, the support and buffer assembly includes a mounting frame, which is installed on the outside of the support column. The mounting frame has three movable slots with equal angles inside. A circular plate is installed at the bottom of each of the three movable slots. A circular plate is fixedly connected to a circular plate two by a spring. The circular plate two is slidably connected inside the movable slot. Two inclined blocks symmetrically slide against each other on one side of one end of the circular plate two. The two inclined blocks slide in through holes on both sides of the movable slot. The other end of the circular plate two is fixedly connected to a support rod, which slides through the movable slot.
[0008] Optionally, the floating platform is designed as an equilateral triangle, with the three pontoons fixedly installed at the three vertices of the equilateral triangle.
[0009] Optionally, the inclined surface of the inclined block is designed as a stepped shape, and the stepped inclined surface abuts against the end face of the second circular plate to increase the frictional resistance of the contact interface and prevent the second circular plate from sliding unexpectedly in the movable groove.
[0010] Optionally, the adjustment assembly includes three oil cylinders (1), all three oil cylinders (1) are circumferentially and equidistantly installed on the inner wall of the support column cavity, each of the three oil cylinders (1) has a push plate slidably connected inside, and each of the three push plates has a contact block fixedly connected to one end. The inner cavity of each oil cylinder (1) is connected to two oil cylinders (2) through two hoses, and the two oil cylinders (2) are symmetrically installed in the grooves opened at the upper and lower ends of the mounting bracket. Each of the two oil cylinders (2) has two push rods slidably connected inside through two springs, and each of the two push rods has a connecting block fixedly connected to its outer end. Each of the two connecting blocks has a connecting plate fixedly connected to its inner end, and the inner side of each of the two connecting plates is fixedly connected to an inclined block.
[0011] Optionally, the three support rods are arranged at equal angles along the axial direction of the support column, and the connecting plate is designed as an arc-shaped structure, with the center of the arc segment of the connecting plate corresponding to the center of the circumference formed by the three support rods.
[0012] Optionally, the vertical block is designed as a frustum-shaped structure that is narrow at the top and wide at the bottom. The axis of the vertical block corresponds to the axis of the support column. The three abutment blocks are designed as arcs, and the three abutment blocks together form a complete circular contact surface, which is used to abut against the outside of the vertical block when the support column is tilted.
[0013] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, through the support buffer assembly and adjustment assembly, the circular plate 1 slides elastically in the movable groove through the spring 1, so that the support rod and the mounting frame form a non-rigid connection. When the wind and waves cause the support column to tilt, the sag block squeezes the abutment block, the hydraulic oil is pressed into the oil cylinder 2 and pushes the push rod, so that the inclined block slides along the through hole of the movable groove. Its stepped inclined surface is misaligned with the circular plate 2, forming a sliding gap of the spring 1. Combined with the spring 1, it relieves the impact stress on the support rod and realizes buffering and vibration reduction.
[0014] In the above scheme, by adjusting the components and the vertical block, and utilizing the truncated cone structure that is narrower at the top and wider at the bottom of the vertical block, the greater the inclination angle of the support column, the larger the radius of the contact point between the contact block and the truncated cone, and the stronger the horizontal thrust torque generated. This torque acts on the push plate through the contact block, and the push plate compresses the hydraulic oil in the first oil cylinder, transmitting the amplified pressure to the push rod in the second oil cylinder, driving the inclined block to move, thereby expanding the misalignment gap between the inclined block and the second circular plate, increasing the buffer stroke of the second circular plate, and improving the buffering and vibration reduction capacity under different wind and wave conditions. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the floating platform of the present invention; Figure 3 This is a schematic diagram of the connection structure between the pontoon and the support column of the present invention; Figure 4 This is a schematic diagram of the internal structure of the support column of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the supporting buffer component structure of the present invention; Figure 6 This is a schematic diagram showing the internal structure of the mounting bracket of the present invention. Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle; Figure 8 This is a schematic diagram of the adjustment component structure of the present invention; Figure 9 This is a schematic diagram showing the internal structure of the oil cylinder of the present invention. Figure 10 This is a schematic diagram of the internal structure of the second oil cylinder of the present invention.
[0016] Figure label: 1. Floating platform; 2. Float; 3. Support column; 4. Wind power generation mechanism; 5. Connecting frame; 6. Support rod; 7. Support and buffer assembly; 71. Mounting frame; 72. Movable groove; 73. Circular plate one; 74. Spring one; 75. Circular plate two; 76. Inclined block; 8. Mounting plate; 9. Connecting ball; 10. Vertical block; 11. Adjusting assembly; 111. Oil cylinder one; 112. Push plate; 113. Abutment block; 114. Oil cylinder two; 1141. Spring two; 115. Push rod; 116. Connecting block; 117. Connecting plate. Detailed Implementation
[0017] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.
[0018] Please see Figures 1 to 10 This invention provides a technical solution: a connection support structure based on an offshore wind power floating platform, including a floating platform 1, a support column 3 installed at the center of the floating platform 1, a wind power generation mechanism 4 installed at the top of the support column 3, connecting frames 5 fixedly connected to both the upper and lower sides of the support column 3, and floats 2 fixed at the three sharp corners of the two connecting frames 5. The upper ends of the three floats 2 are connected to the bottom end of the floating platform 1. Three support buffer components 7 are set at equal angles on the outside of the support column 3. Each support buffer component 7 is connected to the float 2 through three support rods 6. The support buffer component 7 is used for buffering between the support rods 6 and the support column 3. An installation plate 8 is installed at the top of the cavity opened inside the support column 3. A connecting ball 9 is movably connected in the groove of the installation plate 8. A plumb block 10 is installed at the bottom of the connecting ball 9 through a connecting rod. An adjustment component 11 is set between the plumb block 10 and the support buffer component 7. The adjustment component 11 is used to adjust the state of the support buffer component 7. The three floats 2 provide the main buoyancy, so that the entire floating platform 1 floats on the sea surface.
[0019] The support and buffer assembly 7 includes a mounting frame 71, which is installed on the outside of the support column 3. The mounting frame 71 has three movable slots 72 with equal angles inside. A circular plate 73 is installed on the bottom of the inner side of each of the three movable slots 72. A circular plate 75 is fixedly connected to the circular plate 73 by a spring 74. The circular plate 75 is slidably connected inside the movable slot 72. Two inclined blocks 76 are symmetrically sliding against each other on both sides of one end of the circular plate 75. The two inclined blocks 76 slide in the through holes on both sides of the movable slot 72. The other end of the circular plate 75 is fixedly connected to the support rod 6. The support rod 6 slides through the movable slot 72. The inclined blocks 76 abut against the circular plate 75 in the initial state, effectively restricting the degree of freedom of the circular plate 75 and providing the necessary structural rigidity under normal conditions.
[0020] The floating platform 1 is designed with an equilateral triangle structure. Three pontoons 2 are fixedly installed at the three vertices of the equilateral triangle. The floating platform 1 floats on the sea surface with an equilateral triangle configuration. The three pontoons 2 are located at the three vertices of the triangle, forming a symmetrical and stable buoyancy support system. The gravity load generated by the wind power generation mechanism 4 and the external load caused by wind and wave disturbance are evenly distributed to each pontoon 2 to avoid local overload and thus maintain the stability of the central axis force.
[0021] The inclined surface of the inclined block 76 is designed as a stepped surface, which abuts against the end face of the second circular plate 75 to increase the frictional resistance of the contact interface and prevent the second circular plate 75 from sliding unexpectedly in the movable groove 72. When the device is in a static or low sea state operating state, the second circular plate 75 in the support buffer assembly 7 is limited by the inclined block 76 to the initial position in the movable groove 72. At this time, the first spring 74 maintains the preset compression amount. Since the side of the inclined block 76 that contacts the second circular plate 75 is a stepped inclined surface, the actual contact area and micro-interlocking effect between the two are increased, making it difficult for the second circular plate 75 to overcome the high static friction provided by the stepped surface and easily slip, thereby effectively maintaining the initial state of the inclined block 76.
[0022] Adjustment assembly 11 includes three oil cylinders 111, which are circumferentially and equidistantly installed on the inner wall of the cavity of support column 3. Each of the three oil cylinders 111 has a push plate 112 slidably connected inside it, and one end of each push plate 112 is fixedly connected to an abutment block 113. Two oil cylinders 114 are connected to the inner cavity of each oil cylinder 111 via two hoses. The two oil cylinders 114 are symmetrically installed in grooves at the upper and lower ends of mounting bracket 71. Each of the two oil cylinders 114 has two push rods 115 slidably connected inside it via springs 1141. Connecting blocks 116 are fixedly connected to the outer ends of each push rod 115, and connecting plates 117 are fixedly connected to the inner ends of each connecting block 116. The inner sides of the connecting plates 117 are fixedly connected to inclined blocks 76. Under normal sea conditions, the vertical block 10 hangs at the center of the cavity of support column 3 and does not contact the abutment block 113. The inclined block 76 is in its initial position, limiting the range of motion of the circular plate 75, and keeping the springs 74 in their initial position. Holding a preset compression amount, when encountering wind and waves, the floating platform 1 and support column 3 tilt or sway, while the vertical block 10 remains vertical due to gravity. At this time, the support column 3 deflects relative to the vertical block 10, causing the vertical block 10 to contact the abutment block 113 in a certain direction and apply a thrust. This thrust drives the push plate 112 to slide in the first oil cylinder 111, pressing the hydraulic oil inside the first oil cylinder 111 into the two corresponding second oil cylinders 114 through the hose. After the hydraulic oil enters the second oil cylinder 114, it pushes the two push rods 115 to overcome the resistance of the second spring 1141 and move synchronously in opposite directions. The push rods 115 drive the inclined block 76 to slide in the through holes on both sides of the movable groove 72 through the connecting block 116 and the connecting plate 117, so that the stepped inclined surface of the inclined block 76 is misaligned with the second circular plate 75, thereby creating a sliding gap of the second circular plate 75 in the movable groove 72. This, together with the first spring 74, achieves a buffering and vibration reduction effect on the support rod 6 that is stressed by the impact.
[0023] The three support rods 6 are set at equal angles along the axis of the support column 3. The connecting plate 117 is designed as an arc structure. The center of the arc segment of the connecting plate 117 corresponds to the center of the circle formed by the three support rods 6. The three support rods 6 are set at equal angles along the axis of the support column 3, so that the force is evenly distributed by the three support rods 6, realizing the symmetrical transmission and balanced distribution of stress.
[0024] The sag block 10 is designed as a frustum-shaped structure that is narrow at the top and wide at the bottom. The axis of the sag block 10 corresponds to the axis of the support column 3. The three abutment blocks 113 are designed as arcs and together form a complete circular contact surface, which is used to abut against the outside of the sag block 10 when the support column 3 is tilted. When the wind and waves increase and the platform tilts, the support column 3 deflects accordingly, while the sag block 10 remains vertically suspended due to gravity. Its sidewall then contacts the abutment block 113 in the corresponding position. Since the sag block 10 is frustum-shaped, the larger the tilt angle, the closer the contact point is to its bottom large diameter end. At this time, under the premise that the gravity of the sag block 10 remains unchanged, the horizontal thrust torque generated increases accordingly, thereby pushing the push plate 112 to form a stronger hydraulic output. The thrust is small and the buffer stroke is short when the waves are small, while the thrust is significantly enhanced and the buffer stroke is longer when the waves are large.
[0025] The working principle of the technical solution provided by this invention is as follows: The floating platform 1 floats on the sea surface with an equilateral triangle structure. Three buoys 2 are located at the vertices of the triangle to provide uniform buoyancy. The support column 3 stands vertically in the center of the floating platform 1, and the wind power generation mechanism 4 at its top is in normal working posture. At this time, the vertical block 10 hangs in the center of the cavity of the support column 3 due to gravity and does not contact any abutting block 113. The inclined block 76 remains in the initial position against the circular plate 75, effectively restricting the degree of freedom of the circular plate 75 to provide the necessary structural rigidity under normal conditions. When encountering wind and waves, the floating platform 1 and support column 3 tilt or sway, while the plumb block 10 inside the cavity remains vertical under the influence of gravity. Therefore, the tilting of the support column 3 causes a change in the relative position of the plumb block 10, and the frustum-shaped sidewall of the plumb block 10 presses against the corresponding abutment block 113. The plumb block 10 presses against the abutment block 113, pushing the push plate 112 connected to it to slide inside the first oil cylinder 111. Under pressure, the hydraulic oil in the first oil cylinder 111 is forced through the hose into the two second oil cylinders in the corresponding direction. In section 114, after the hydraulic oil enters the second oil cylinder 114, it pushes the two push rods 115 inside to move in opposite directions against the elastic force of the second spring 1141. The push rods 115 drive the inclined block 76 to slide in the through holes on both sides of the movable groove 72 through the connecting block 116 and the connecting plate 117, so that the stepped inclined surface of the inclined block 76 is misaligned with the second circular plate 75, thereby creating a sliding gap of the second circular plate 75 in the movable groove 72. At the same time, it works with the first spring 74 to achieve a buffering and vibration reduction effect on the support rod 6 that is stressed due to impact. The more violent the wind and waves, the greater the tilt angle of the platform. The frustum design of the vertical block 10 makes the contact point between it and the abutment block 113 lower when the tilt angle is greater, and the thrust torque generated is also greater. The amplified thrust torque acts on the push plate 112 through the abutment block 113. The push plate 112 compresses the hydraulic oil in the first oil cylinder 111 and transmits the amplified pressure to the push rod 115 in the second oil cylinder 114. This makes the misalignment gap between the inclined block 76 and the second circular plate 75 larger, providing a longer buffer stroke for the second circular plate 75. This further improves the buffering and vibration reduction capabilities under different wind and wave conditions, thus realizing the adaptive adjustment of small waves with small buffer and large waves with larger buffer.
[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A connection support structure based on an offshore wind power floating platform, comprising a floating platform (1), characterized in that, A support column (3) is installed at the center of the floating platform (1). A wind power generation mechanism (4) is installed at the top of the support column (3). Connecting frames (5) are fixedly connected to both the upper and lower sides of the support column (3). Floating cylinders (2) are fixed at the three sharp corners of the two connecting frames (5). The upper ends of the three floating cylinders (2) are connected to the bottom end of the floating platform (1). Three support buffer components (7) are set at equal angles on the outer side of the support column (3). Each support buffer component (7) is connected to the support column (3) by three support rods (6). The floats (2) are connected together. The support buffer assembly (7) is used for buffering between the support rod (6) and the support column (3). The top of the cavity opened inside the support column (3) is equipped with an installation plate (8). A connecting ball (9) is movably connected in the groove of the installation plate (8). A vertical block (10) is installed at the bottom of the connecting ball (9) through the connecting rod. An adjustment assembly (11) is provided between the vertical block (10) and the support buffer assembly (7). The adjustment assembly (11) is used for adjusting the state of the support buffer assembly (7).
2. The connection support structure based on an offshore wind power floating platform according to claim 1, characterized in that, The support and buffer assembly (7) includes a mounting frame (71), which is installed on the outside of the support column (3). The mounting frame (71) has three movable slots (72) at equal angles inside. A circular plate (73) is installed on the bottom of the inner side of each of the three movable slots (72). A circular plate (75) is fixedly connected to the circular plate (73) by a spring (74). The circular plate (75) is slidably connected to the movable slot (72). Two inclined blocks (76) are symmetrically sliding against one side of the circular plate (75). The two inclined blocks (76) slide in the through holes on both sides of the movable slot (72). The other end of the circular plate (75) is fixedly connected to the support rod (6). The support rod (6) slides through the movable slot (72).
3. The connection support structure based on an offshore wind power floating platform according to claim 1, characterized in that, The floating platform (1) is designed as an equilateral triangle, and the three pontoons (2) are fixedly installed at the three vertices of the equilateral triangle.
4. The connection support structure based on an offshore wind power floating platform according to claim 2, characterized in that, The inclined surface of the inclined block (76) is designed as a step, and the stepped inclined surface abuts against the end face of the second circular plate (75) to increase the frictional resistance of the contact interface and prevent the second circular plate (75) from sliding unexpectedly in the movable groove (72).
5. The connection support structure based on an offshore wind power floating platform according to claim 2, characterized in that, The adjustment assembly (11) includes three oil cylinders (111). The three oil cylinders (111) are circumferentially and equidistantly installed on the inner wall of the cavity of the support column (3). The three oil cylinders (111) are sealed and slidably connected with push plates (112). The three push plates (112) are fixedly connected with abutment blocks (113) at one end. The inner cavity of the oil cylinders (111) is connected to two oil cylinders (114) through two hoses. The two oil cylinders (114) are symmetrically installed in the grooves opened at the upper and lower ends of the mounting bracket (71). The two oil cylinders (114) are symmetrically and slidably connected with two push rods (115) through springs (1141). The outer ends of the two push rods (115) are fixedly connected with connecting blocks (116). The inner ends of the two connecting blocks (116) are fixedly connected with connecting plates (117). The inner sides of the two connecting plates (117) are fixedly connected with inclined blocks (76).
6. The connection support structure based on an offshore wind power floating platform according to claim 5, characterized in that, The three support rods (6) are arranged at equal angles along the axis of the support column (3), and the connecting plate (117) is designed as an arc structure. The center of the arc segment of the connecting plate (117) corresponds to the center of the circle formed by the three support rods (6).
7. The connection support structure based on an offshore wind power floating platform according to claim 5, characterized in that, The vertical block (10) is designed as a frustum-shaped structure that is narrow at the top and wide at the bottom. The axis of the vertical block (10) corresponds to the axis of the support column (3). The three abutting blocks (113) are designed as arcs, and the three abutting blocks (113) together form a complete circular contact surface, which is used to abut against the outside of the vertical block (10) when the support column (3) is tilted.