Split outer hanging type three-way damper

Abstract

The present application relates to a kind of split external three-way damper, including annular mass, vertical support structure and base, the annular mass is hollow ring structure, external in the controlled structure;The annular mass includes several single petal mass and connecting plate, the each single petal mass is connected together by the connecting plate, to form the annular mass, the annular mass is connected to controlled structure;The bottom of the annular mass is hinged to the base by vertical support structure, the annular mass and the vertical support structure can rotate around hinge point, in vertical plane, it is together to constitute the structure form of inverted pendulum.

Description

Technical Field

[0001] This invention belongs to the field of damping equipment technology and relates to a tuned mass damper for three-dimensional vibration control. Background Technology

[0002] In the field of vibration control for tall, flexible structures, traditional tuned mass dampers (TMDs) can only control vibration in a single direction. However, for offshore floating wind turbines and similar marine structures, vibrations in three directions are often generated under environmental loads. To achieve triaxial vibration control, a tuned mass damper is typically installed in each vibration direction. However, using multiple dampers simultaneously often results in problems such as large installation space, structural complexity, difficulty in coordinating the tuning of multiple dampers, and high cost.

[0003] Therefore, it is necessary to invent a composite tuned mass damper that can achieve triaxial control of the structure through a single mass block and reduce dependence on the structural space by using an external installation method. It has great potential application value, especially for triaxial vibration control of offshore floating wind turbines and similar marine structures. Summary of the Invention

[0004] This invention provides a segmented externally mounted tuned mass damper that achieves vibration control in three directions while requiring no installation space. It is particularly suitable for vibration control in space-constrained structures, such as offshore floating wind turbines (where the tower diameter is small and internal installation space is limited), and has excellent application prospects. This invention is achieved through the following technical solution:

[0005] A segmented externally mounted triaxial damper is characterized by comprising an annular mass block, a vertical support structure, and a base. The annular mass block is a hollow ring structure and is externally mounted on a controlled structure. The annular mass block includes several single-segment mass blocks and connecting plates, with the single-segment mass blocks connected together by the connecting plates to form the annular mass block, which is connected to the controlled structure. The bottom of the annular mass block is hinged to the base via the vertical support structure, and the annular mass block and the vertical support structure can rotate around the hinge point, together forming an inverted pendulum structure in the vertical plane.

[0006] Furthermore, the vertical support structure is a damping device.

[0007] Furthermore: the vertical support structure includes a vertical spring hinged to the base.

[0008] Furthermore: the vertical support structure includes a damping rod hinged to the base.

[0009] Furthermore, the inner side of the annular mass block is connected to the controlled structure via a wave spring 4.

[0010] Furthermore: a vertical slide rail is connected to the controlled structure, and the wave spring is fixedly connected to the slider set on the vertical slide rail.

[0011] Furthermore: the vertical slide rail is provided with limiters at both ends, and the inner side of the limiters is provided with viscoelastic anti-collision pads.

[0012] The present invention, by adopting the above technical solutions, has the following advantages: 1. Through ingenious structural design, the present invention integrates the functions of an inverted pendulum damper and a traditional TMD to form a composite damper capable of simultaneously controlling vibration in three directions; 2. Compared with using multiple independent TMDs for three-dimensional control, the present invention shares the same mass block, effectively reducing the weight and manufacturing cost of the damper; 3. The present invention has a segmented structure, installed externally, solving the damper's installation space requirements. Furthermore, the identical segmented structures facilitate mass production and engineering installation; 4. The damper of the present invention has stronger stability and robustness. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the segmented external damper of the present invention.

[0014] Figure 2 This is a top view of the segmented external damper of the present invention.

[0015] Figure 3 This is a three-dimensional axial view of the vertical slide rail of the present invention.

[0016] The following are the labels in the diagram: 1 is the base; 2 is the vertical support structure; 2-1 is the damping rod; 2-2 is the vertical spring; 3 is the ring mass block; 3-1 is the single-lobed mass block; 3-2 is the connecting plate; 4 is the wave spring; 5 is the vertical slide rail; 5-1 is the slider; 5-2 is the limiter; 5-3 is the viscoelastic anti-collision pad. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 3 As shown, the present invention mainly includes a base 1, a vertical support structure 2, a damping rod 2-1, a vertical spring 2-2, an annular mass block 3, a single-lobed mass block 3-1, a connecting plate 3-2, a wave spring 4, a slider 5, a slide groove 5-1, a vertical slide rail 6, a viscoelastic anti-collision pad 6-1, and a limiter 6-2.

[0019] like Figure 1As shown, the base 1 of the present invention is fixed on the outer surface of the controlled structure. A vertical support structure 2 is connected to the upper part of the base 1. The vertical support structure 2 is hinged to the base 1, so that the vertical support structure 2 can rotate around the hinge point. The vertical support structure 2 is composed of a damping rod 2-1 and a vertical spring 2-2, and has an energy dissipation function in the vertical direction.

[0020] like Figure 1 As shown, the vertical support structure 2 supports an annular mass block 3 on its upper part. The annular mass block 3 is a hollow ring structure, which achieves the purpose of being externally attached to the controlled structure and solves the problem of installation space requirements. Through the above connection method, the annular mass block 3 and the support structure 2 form an inverted pendulum structure in the vertical plane.

[0021] like Figure 2 As shown, the annular mass block 3 is composed of several single-lobed mass blocks 3-1 and connecting plates 3-2, with the connecting plates 3-2 fixed to both ends of the single-lobed mass blocks 3-1. Preferably, the annular mass block 3 is evenly divided into four single-lobed mass blocks 3-1 within a 360° range. Each single-lobed mass block 3-1 is connected by bolts through the connecting plates 3-2 to form the annular mass block 3. This construction facilitates easy installation and disassembly.

[0022] like Figure 1 As shown, the inner side of the annular mass block 3 is connected to the wave spring 4 (or other energy-dissipating material). The wave spring 4 has the characteristics of strong buffering and vibration absorption capacity. The other side of the wave spring 4 is fixedly connected to the slider 5-1 on the vertical slide rail 5. The vertical slide rail 5 is welded to the outer surface of the controlled structure. Through the above connection method, when the controlled structure vibrates in the horizontal direction, the inverted pendulum formed by the annular mass block 3 and the support structure 2 in the vertical plane generates vibration opposite to that of the controlled structure around the hinge point, and dissipates energy through the wave spring 4, thereby realizing a bidirectional vibration control function similar to a pendulum damper.

[0023] like Figure 3 As shown, the slider 5-1 is adapted to the vertical slide rail 5 and can slide up and down along the vertical slide rail 5. The vertical slide rail 5 is provided with limiters 5-2 at both ends to prevent the slider 5-1 from derailing. The inner side of the limiter 5-2 is provided with a viscoelastic anti-collision pad 5-3. The viscoelastic anti-collision pad 5-3 is used to buffer the impact force generated when the slider 5-1 collides with the limiter 5-2, and at the same time dissipate the collision energy.

[0024] like Figure 1As shown, through the above ingenious design, the annular mass block 3 and the slider 5-1 can also slide up and down along the vertical slide rail 5 at the same time, thus forming a classic TMD in the vertical plane, realizing vibration control of the controlled structure in the vertical direction. At the same time, the slider 5-1 has a certain frictional energy dissipation effect when sliding on the vertical slide rail, which can further improve the ability of the classic TMD to dissipate energy in the vertical direction of the controlled structure.

[0025] like Figure 1 and Figure 2 As shown, the composition and structural form of each single-lobe structure of the present invention are completely identical, making it suitable for mass production; each component is highly versatile and easy to install and disassemble on the controlled structure.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A segmented externally mounted triaxial damper, characterized in that: The device includes a ring-shaped mass block, a vertical support structure, and a base. The ring-shaped mass block is a hollow ring structure that is externally attached to the controlled structure. The ring-shaped mass block includes several single-lobed mass blocks and connecting plates. The single-lobed mass blocks are connected together by the connecting plates to form the ring-shaped mass block, which is connected to the controlled structure. The bottom of the ring-shaped mass block is hinged to the base through the vertical support structure. The ring-shaped mass block and the vertical support structure can rotate around the hinge point, together forming an inverted pendulum structure in the vertical plane.

2. The segmented external triaxial damper according to claim 1, characterized in that: The vertical support structure is a damping device.

3. The segmented external triaxial damper according to claim 1, characterized in that: The vertical support structure includes a vertical spring that is hinged to the base.

4. The segmented external triaxial damper according to claim 1, characterized in that: The vertical support structure includes a damping rod hinged to the base.

5. The segmented external triaxial damper according to claim 1, characterized in that: The inner side of the annular mass block is connected to the controlled structure via a wave spring.

6. The segmented external triaxial damper according to claim 5, characterized in that: A vertical slide rail is connected to the controlled structure, and the wave spring is fixedly connected to the slider set on the vertical slide rail.

7. The segmented external triaxial damper according to claim 6, characterized in that: The vertical slide rail is equipped with limiters at both ends, and the inner side of the limiters is equipped with viscoelastic anti-collision pads.

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