Suspension type tuned mass damper based on collision energy dissipation

Abstract

The utility model provides a suspension type tuned mass damper based on collision energy dissipation, which comprises an elastic material collision component sleeved on the surface of a tower and a suspension component suspended on the tower, the suspension assembly comprises a suspension hoop arranged outside the tower in a sleeving mode, a mass block located below the suspension hoop and a steel cable connected between the mass block and the suspension hoop, the elastic material collision assembly comprises a bottom plate arranged outside the tower in a sleeving mode and located below the suspension hoop and an annular viscoelastic material arranged outside the bottom plate in a sleeving mode, and the bottom plate is connected with the tower through a fastener. When vibrating, the mass block collides with the annular viscoelastic material on the surface of the tower to play a role in energy absorption. The suspension type tuned mass damper solves the problem that a conventional tuned mass damper is difficult to install in a single-tube tower.

Description

Technical Field

[0001] This utility model relates to the field of vibration control technology, and in particular to a suspended tuned mass damper based on collision energy dissipation. Background Technology

[0002] Single-tube communication tower structures are characterized by a large height-to-width ratio and long period, making them highly sensitive to dynamic loads such as wind and earthquakes. Under dynamic loads, they are prone to significant displacement and acceleration responses, impacting the normal operation of communication facilities and the safety of the tower structure. To control the horizontal displacement and acceleration of single-tube tower structures, tuned mass dampers can be used for vibration control.

[0003] A tuned mass damper, through the addition of a mass and spring elements, forms a tuned mass controller with a frequency close to that of the controlled structure. This generates a reverse motion and control force on the controlled structure, thereby reducing its vibration amplitude. However, tuned mass dampers typically require significant installation space to accommodate the large amplitude of the added mass. For single-tube tower structures, however, internal space is very limited, making it difficult to install tuned mass dampers within the available space. Therefore, the design of the tuned mass damper becomes a key issue; secondly, how to install energy-dissipating materials within the tuned mass controller to enhance the damping and energy dissipation capacity of the control system is also a major challenge. Utility Model Content

[0004] The main purpose of this invention is to provide a suspended tuned mass damper based on collision energy dissipation, which is designed to facilitate the installation of tuned mass dampers on monotube towers.

[0005] To achieve the above objectives, this utility model provides a suspended tuned mass damper based on collision energy dissipation, comprising an elastic material collision assembly fitted onto the surface of a tower and a suspension assembly suspended from the tower, wherein...

[0006] The suspension assembly includes a suspension sleeve fitted over the tower, a mass block located below the suspension sleeve, and a steel cable connecting the mass block and the suspension sleeve. The elastic material collision assembly includes a base plate fitted over the tower and located below the suspension sleeve, and an annular viscoelastic material fitted over the base plate. The base plate is connected to the tower by fasteners. When the mass block vibrates, it collides with the annular viscoelastic material on the surface of the tower to absorb energy.

[0007] Preferably, the base plate is an annular base plate.

[0008] Preferably, the outer wall of the annular viscoelastic material is also wrapped with a protective film to enhance impact protection and aging protection.

[0009] Preferably, the base plate and the annular viscoelastic material are fixedly connected by vulcanization molding.

[0010] Preferably, the suspension sleeve includes multiple segmented sleeves, each segmented sleeve includes an arc-shaped sleeve and multiple cantilever arms extending outward along the arc-shaped sleeve. The cantilever arms of every two adjacent segmented sleeves are connected to form a support arm. A connecting ear plate is installed on the free end of the cantilever arm for suspending the steel cable. The two cantilever arms that form the support arm are fixed together by fasteners.

[0011] Preferably, the cantilever and the connecting lug are connected by welding.

[0012] Preferably, the plurality of cantilever arms are evenly arranged in the circumferential direction of the tower.

[0013] Preferably, the cantilever has multiple mounting holes for studs to pass through.

[0014] Preferably, the mass block is an annular mass block, and multiple connectors are protruding on the outer wall of the annular mass block. Connecting ear plates are provided on the connectors for installing steel cables.

[0015] Preferably, the height of the annular mass block is flush with the height of the annular viscoelastic material.

[0016] The suspended tuned mass damper proposed in this utility model has the following beneficial effects:

[0017] 1. Taking advantage of the tapered facade of the tapered tower, which is narrow at the top and wide at the bottom, the suspension components and elastic material collision components can be fixed to the tower by their own weight after assembly.

[0018] 2. The mass block of the suspension component adopts a ring mass block, which effectively utilizes the external space of the tower and can play a tuned vibration reduction role in any horizontal direction;

[0019] 3. The mass block has the same taper as the tower, which can adapt to the taper of the tower surface and collide with the viscoelastic material over a large area to achieve a greater energy absorption effect;

[0020] 4. A protective film is wrapped around the viscoelastic material layer to prevent premature aging of the viscoelastic material and enhance protection against collision damage;

[0021] 5. This suspended tuned mass damper requires minimal space and is easy to install. It utilizes the mass block for tuning and vibration reduction, and the tuning frequency can be optimized by adjusting the mass block's suspension height. Through a viscoelastic material installed on the tower surface, the collision between the vibrating mass block and the tower surface absorbs energy, converting and dissipating the kinetic energy of the tuned mass damper, thus achieving a tuned mass damper vibration reduction system with high damping characteristics. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural diagram of the suspended tuned mass damper based on collision energy dissipation according to this utility model.

[0023] Figure 2 This is a schematic diagram of the main structure of the suspended tuned mass damper based on collision energy dissipation according to this utility model.

[0024] Figure 3 This is a top view schematic diagram of the suspended tuned mass damper based on collision energy dissipation according to this utility model;

[0025] Figure 4 This is a partial structural schematic diagram of the suspended tuned mass damper based on collision energy dissipation according to this utility model;

[0026] Figure 5 This is a schematic diagram of the segmented sleeve structure in the suspended tuned mass damper based on collision energy dissipation of this utility model.

[0027] In the diagram, 1-tower, 2-suspension sleeve, 3-fastener, 4-connecting lug, 5-steel cable, 6-connector, 7-base plate, 8-ring viscoelastic material, 9-protective film, 10-mass block, 11-segmented sleeve.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Reference Figures 1 to 5 In this preferred embodiment, a suspended tuned mass damper based on collision energy dissipation includes an elastic material collision assembly fitted onto the surface of the tower 1, and a suspension assembly suspended from the tower 1, wherein...

[0032] The suspension assembly includes a suspension sleeve 2 fitted outside the tower 1, a mass block 10 located below the suspension sleeve 2, and a steel cable 5 connecting the mass block 10 and the suspension sleeve 2. The elastic material collision assembly includes a base plate 7 fitted outside the tower 1 and located below the suspension sleeve 2, and an annular viscoelastic material 8 fitted outside the base plate 7 (the viscoelastic material adopts a common material in the prior art). The base plate 7 is connected to the tower 1 by fasteners 3. When the mass block 10 vibrates, it collides with the annular viscoelastic material 8 on the surface of the tower 1 to play an energy absorption role.

[0033] Specifically, in this embodiment, the base plate 7 is an annular base plate 7, thereby improving the tightness of the connection between the annular viscoelastic material 8 and the tower 1.

[0034] Furthermore, the outer wall of the annular viscoelastic material 8 is also wrapped with a protective film 9 to enhance impact protection and aging protection.

[0035] In this embodiment, the base plate 7 and the annular viscoelastic material 8 are fixedly connected by vulcanization molding.

[0036] Specifically, refer to Figures 3 to 5 The suspension sleeve 2 includes multiple segmented sleeves 11. Each segmented sleeve 11 includes an arc-shaped sleeve and multiple cantilever arms extending outward along the arc-shaped sleeve. The cantilever arms of every two adjacent segmented sleeves 11 are connected to form a support arm. A connecting lug 4 is installed on the free end of the cantilever arm for suspending the steel cable 5. The two cantilever arms forming the support arm are fixed together by fasteners 3. The fasteners 3 consist of a stud, nut, and washer assembly. The connecting lug 4 is connected to the steel cable 5 through studs and nuts to suspend the mass block 10.

[0037] In this embodiment, the cantilever and the connecting lug 4 are connected by welding. Multiple cantilevers are evenly arranged in the circumferential direction of the tower 1, thereby ensuring that the cantilever is subjected to uniform force.

[0038] Specifically, refer to Figure 5 The cantilever of the segmented sleeve 11 has multiple mounting holes for studs to pass through. Figure 5 (The example shown is a Chinese design with three mounting holes).

[0039] Furthermore, referring to Figure 3 and Figure 4 The mass block 10 is an annular mass block, and multiple connectors 6 protrude from its outer side wall. Each connector 6 has a connecting lug 4 for mounting the steel cable 5. The connectors 6 are connected to the steel cable 5 via studs and nuts. The use of an annular mass block 10 effectively utilizes the external space of the tower 1 and can also provide tuning and vibration reduction in any horizontal direction.

[0040] Furthermore, the height of the annular mass block 10 is flush with the height of the annular viscoelastic material 8, thereby ensuring effective collision during vibration.

[0041] The installation process of this suspension-type tuned mass damper based on collision energy dissipation is as follows:

[0042] First, a base plate 7 is made of thin-walled steel plate and vulcanized with an annular viscoelastic material 8 in a factory. The outer surface of the annular viscoelastic material 8 is covered with a protective film 9. Then, an integrated viscoelastic material collision layer is wrapped around the outer surface of the tower 1, and the base plate 7 is fixed by fasteners 3.

[0043] Secondly, the position of the suspension device is determined according to the suspension position of the mass block 10, and the suspension sleeve 2 is assembled and fixed to the tower 1 by fasteners 3.

[0044] Finally, install the mass block 10 and connect it to the steel cable 5 via the connector 6. The steel cable 5 is connected via the connecting ear plate 4. The mass block 10 is flush with the height of the viscoelastic material to ensure effective collision during vibration.

[0045] The suspended tuned mass damper proposed in this embodiment has the following beneficial effects:

[0046] 1. Taking advantage of the tapered facade of the tapered tower 1, which is narrow at the top and wide at the bottom, the suspension components and the elastic material collision components can be fixed to the tower 1 by their own weight after assembly.

[0047] 2. The mass block 10 of the suspension component adopts a ring mass block, which effectively utilizes the external space of the tower 1 without occupying its internal space, and can play a tuned vibration reduction role in any horizontal direction.

[0048] 3. The mass block 10 has the same taper as the tower 1, which can adapt to the taper of the tower 1 surface and collide with the viscoelastic material over a large area to achieve a greater energy absorption effect;

[0049] 4. A protective film is wrapped around the viscoelastic material layer to prevent premature aging of the viscoelastic material and enhance protection against collision damage;

[0050] 5. This suspended tuned mass damper does not require excessive space and is simple and convenient to install. It utilizes the mass block 10 to achieve tuning and vibration reduction, and the tuning frequency can be optimized by adjusting the suspension height of the mass block 10. Through the viscoelastic material installed on the surface of the tower 1, the collision between the mass block 10 and the surface of the tower 1 during vibration absorbs energy, converting and dissipating the kinetic energy of the tuned mass damper, thus obtaining a tuned mass damper vibration reduction system with high damping characteristics.

[0051] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A collision energy dissipation based tuned mass damper in suspension form, characterized by, The elastic material impact assembly comprises a bottom plate sleeved on the outer surface of the tower and an annular viscoelastic material sleeved on the outer surface of the bottom plate, the bottom plate is connected with the tower through fasteners, and the annular viscoelastic material is impacted by the mass block when the mass block vibrates to play an energy absorption effect. The bottom plate is an annular bottom plate.

2. The collision energy dissipation based pendulum tuned mass damper as claimed in claim 1, wherein, The outer side wall of the annular viscoelastic material is further wrapped with a protective film to enhance the impact protection and aging protection.

3. The collision-energ'-based hinged tuned mass damper as claimed in claim 1, wherein, The bottom plate and the annular viscoelastic material are fixedly connected through vulcanization forming.

4. The collision-energ'-based hanged-tuned mass damper according to claim 1, wherein The suspension sleeve hoop comprises a plurality of segmented sleeve hoops, each of which comprises an arc-shaped sleeve hoop and a plurality of cantilever arms extending outward along the arc-shaped sleeve hoop, the cantilever arms of every two adjacent segmented sleeve hoops are connected to form a support arm, a connecting lug is mounted on the free end of the cantilever arm to be connected with the suspension cable, and the two cantilever arms forming the support arm are fixed through fasteners.

5. The impact energy-based tuned mass damper according to claim 1, wherein, The cantilever arms and the connecting lug are connected through welding.

6. The impact energy-based tuned mass damper according to claim 5, wherein, The plurality of cantilever arms are uniformly arranged in the circumferential direction of the tower.

7. The impact energy-based tuned mass damper according to claim 5, wherein, A plurality of mounting holes for the studs to pass through are formed on the cantilever arms.

8. The impact energy-based tuned mass damper according to claim 5, wherein, The mass block is an annular mass block, a plurality of connecting pieces are protruded on the outer side wall of the annular mass block, and a connecting lug is arranged on the connecting piece to be connected with the suspension cable.

9. A collision energy-dissipating based suspension type tuned mass damper according to any one of claims 1 to 8, characterized in that, The height of the annular mass block is flush with the height of the annular viscoelastic material.

10. The impact energy-based tuned mass damper according to claim 9, wherein, ​

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