A honeycomb structure anti-collision buffer device of an offshore wind turbine

Abstract

The utility model discloses a kind of honeycomb structure anti-collision buffer devices of offshore wind turbine, including L-shaped fixed plate, first buffer mechanism, mounting plate and second buffer mechanism;One end surface of the L-shaped fixed plate is connected with second buffer mechanism, and second buffer mechanism is connected with first buffer mechanism by mounting plate;Wherein, second buffer mechanism includes inner recessed hexagonal honeycomb block component and elastic component, the two sides of the inner recessed hexagonal honeycomb block component are respectively connected with L-shaped fixed plate and mounting plate, and the two ends of the elastic component are respectively connected with L-shaped fixed plate and mounting plate and located the two sides of inner recessed hexagonal honeycomb block component;The utility model is provided with double-layer buffer mechanism, and inner recessed hexagonal honeycomb rubber block component shows the negative poisson's ratio effect of shrinkage in extrusion process, stiffness gradually improves, play the role of further buffering, so that the impact force that offshore wind turbine foundation and ship body receive is smaller, and protective is stronger.

Description

Technical Field

[0001] This utility model relates to the technical field of preventing ship collisions in offshore wind power, and in particular to a honeycomb structure anti-collision buffer device for offshore wind turbines. Background Technology

[0002] During offshore wind turbine maintenance, equipment and maintenance personnel need to be transported to the turbine foundation by ship. During the docking process, the ship's hull may collide with the fixed or floating foundation of the offshore wind turbine. Without adequate collision buffers, this can easily damage the turbine foundation or the ship's hull. Therefore, cushioning devices are necessary when the ship docks at the foundation. Currently, most systems use suspended tires or other rubber products as cushioning devices. Solid rubber bodies have good energy absorption capacity under impact loads, but using a topological structure instead of solid rubber bodies can provide even better energy absorption performance. However, solid rubber bodies have a higher density, resulting in a heavier overall device and increased fixed costs.

[0003] Currently, some devices use mechanical structures for buffering. For example, Chinese utility model patent CN214985969U and Chinese invention patent CN110733615B use a crank-slider mechanism as a displacement buffer layer. This structure requires high processing precision and roughness, and has a short lifespan under impact loads. The large volume of the metal structure results in a large overall weight, and there is still room for optimization and improvement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a honeycomb structure anti-collision buffer device for offshore wind turbines. While ensuring the structural lightness, the structure exhibits a positively correlated stiffness change during compression and buffering. This stiffness change characteristic gives the structure better buffering and energy absorption capabilities compared to solid rubber bodies.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: a honeycomb structure anti-collision buffer device for offshore wind turbines, comprising an L-shaped fixing plate, a first buffer mechanism, a mounting plate, and a second buffer mechanism; one end face of the L-shaped fixing plate is connected to the second buffer mechanism, and the second buffer mechanism is connected to the first buffer mechanism through the mounting plate; wherein, the second buffer mechanism comprises a concave hexagonal honeycomb block component and an elastic component, the two sides of the concave hexagonal honeycomb block component are respectively connected to the L-shaped fixing plate and the mounting plate, and the two ends of the elastic component are respectively connected to the L-shaped fixing plate and the mounting plate and located on both sides of the concave hexagonal honeycomb block component.

[0006] Furthermore, the elastic component comprises multiple sets, including a mounting cylinder, a spring, a piston rod, and a limiting bolt; the spring is disposed inside the mounting cylinder, one end of the spring is connected to the bottom of the mounting cylinder, the other end of the spring is connected to the bottom of the piston rod, the mounting plate has multiple mounting holes at both ends for the piston rod to pass through, and the top of the piston rod extends out of the mounting cylinder and the mounting holes and is fitted with a limiting bolt.

[0007] Furthermore, the first buffer mechanism is an arc-shaped solid rubber block.

[0008] Furthermore, the concave hexagonal honeycomb block component is a urethane concave hexagonal honeycomb block component.

[0009] Furthermore, the end face of the L-shaped fixing plate is provided with a plurality of connection holes for connecting with the second buffer mechanism.

[0010] Furthermore, the other end of the L-shaped fixing plate is connected to the offshore wind turbine foundation.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] 1. This utility model is equipped with a double-layer buffer mechanism. When a ship needs to dock at an offshore wind turbine foundation or wharf, the ship first squeezes the first buffer mechanism to deform. After the first buffer mechanism is compressed to a certain extent, the extrusion force is transferred to the second buffer mechanism. The elastic component and the concave hexagonal honeycomb rubber block component start to compress at the same time. During the compression process, the concave hexagonal honeycomb rubber block component exhibits a negative Poisson's ratio effect of contraction, and the stiffness gradually increases, which plays a further buffering role, making the impact force on the offshore wind turbine foundation and the hull smaller and the protection stronger.

[0013] 2. Compared with existing solid rubber blocks or metal material mechanical buffer structures, the concave hexagonal honeycomb rubber block component of this utility model has a smaller weight within the same volume, which effectively helps to make the overall structure lightweight. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a structural cross-sectional view of the elastic component.

[0016] Figure 3 This is a cross-sectional view showing the extrusion effect of a concave hexagonal honeycomb block component. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] See Figures 1 to 2 As shown, the honeycomb structure anti-collision buffer device for offshore wind turbine provided in this embodiment includes an L-shaped fixing plate 1, a first buffer mechanism 4, a mounting plate 3, and a second buffer mechanism. The end face of the L-shaped fixing plate 1 is provided with a plurality of connection holes for connecting with the second buffer mechanism. One end face of the L-shaped fixing plate 1 is connected to the second buffer mechanism through the connection holes and the connection components. The second buffer mechanism is connected to the first buffer mechanism 4 through the mounting plate 3.

[0020] The first buffer mechanism 4 is an arc-shaped solid rubber block, and the second buffer mechanism includes a concave hexagonal honeycomb block component 21 and an elastic component 22. The two sides of the concave hexagonal honeycomb block component 21 are respectively connected to the L-shaped fixing plate 1 and the mounting plate 3. The concave hexagonal honeycomb block component 21 is a polyurethane concave hexagonal honeycomb block component. The two ends of the elastic component 22 are respectively connected to the L-shaped fixing plate 1 and the mounting plate 3 and are located on both sides of the concave hexagonal honeycomb block component 21. The elastic component 22 has multiple sets, including a mounting cylinder 221, a spring 222, a piston rod 223 and a limiting bolt 224. The spring 222 is disposed in the mounting cylinder 221. One end of the spring 222 is connected to the bottom of the mounting cylinder 221, and the other end of the spring 222 is connected to the bottom of the piston rod 223. The two ends of the mounting plate 3 are provided with multiple mounting holes for the piston rod 223 to pass through. The top of the piston rod 223 extends outward from the mounting cylinder 221 and the mounting holes and is fitted with a limiting bolt 224.

[0021] The working principle of this utility model is as follows: This utility model can be installed not only on offshore wind turbine foundations but also on docks. When a ship docks at an offshore wind turbine foundation or dock, the hull first contacts the first buffer mechanism 4, causing deformation and providing initial buffering. After the first buffer mechanism 4 deforms to a certain extent, the compressive force is transmitted to the second buffer mechanism. The concave hexagonal honeycomb block component 21 and the elastic component 22 simultaneously begin to compress. During further compression, the concave hexagonal honeycomb block component 21 exhibits a negative Poisson's ratio effect, the honeycomb material shrinks, and the stiffness increases, providing further buffering. See [link to relevant documentation] Figure 3As shown, this reduces the impact force on the offshore wind turbine foundation and hull, providing stronger protection.

[0022] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A honeycomb structure anti-collision buffer device for offshore wind turbines, characterized in that: The device includes an L-shaped fixing plate, a first buffer mechanism, a mounting plate, and a second buffer mechanism. One end face of the L-shaped fixing plate is connected to the second buffer mechanism, and the second buffer mechanism is connected to the first buffer mechanism through the mounting plate. The second buffer mechanism includes a concave hexagonal honeycomb block component and an elastic component. The two sides of the concave hexagonal honeycomb block component are respectively connected to the L-shaped fixing plate and the mounting plate, and the two ends of the elastic component are respectively connected to the L-shaped fixing plate and the mounting plate and are located on both sides of the concave hexagonal honeycomb block component.

2. The honeycomb structure anti-collision buffer device for offshore wind turbines according to claim 1, characterized in that: The elastic component comprises multiple sets, including a mounting cylinder, a spring, a piston rod, and a limiting bolt; the spring is disposed inside the mounting cylinder, one end of the spring is connected to the bottom of the mounting cylinder, and the other end of the spring is connected to the bottom of the piston rod; the mounting plate has multiple mounting holes at both ends for the piston rod to pass through; the top of the piston rod extends out of the mounting cylinder and the mounting holes and is fitted with a limiting bolt.

3. The honeycomb structure anti-collision buffer device for offshore wind turbines according to claim 1, characterized in that: The first buffer mechanism is an arc-shaped solid rubber block.

4. The honeycomb structure anti-collision buffer device for offshore wind turbines according to claim 1, characterized in that: The concave hexagonal honeycomb block component is a urethane concave hexagonal honeycomb block component.

5. A honeycomb structure anti-collision buffer device for offshore wind turbines according to claim 1, characterized in that: The L-shaped fixing plate has multiple connection holes on its end face for connecting with the second buffer mechanism.

6. A honeycomb structure anti-collision buffer device for offshore wind turbines according to claim 1, characterized in that: The other end of the L-shaped fixing plate is connected to the offshore wind turbine foundation.

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