A suspended tuned mass damper for towers and chimneys

Abstract

The utility model discloses a kind of for tower and chimney's suspension type frequency-modulated mass damper, install on the thickening part of the cylinder of tower / chimney, it is characterized in that, including: ear support, lifting lug, spring box, suspender, mass block.Through the above mode, a kind of for tower and chimney's suspension type frequency-modulated mass damper of the utility model can be adjusted damper according to the characteristics of main structure and actual use demand, improve the effect of reducing the vibration response of main structure, better satisfy the special needs of chimney and tower in wind vibration resistance, effectively reduce the possibility of equipment deformation and damage due to wind vibration, guarantee the safe and stable operation of equipment, simple structure, easy to manufacture, cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of plasma sterilization production equipment, and in particular to a suspended frequency-modulated mass damper for towers and chimneys. Background Technology

[0002] Chimneys and towers are tall structures, and such equipment located in areas with high wind loads is highly susceptible to deformation and damage caused by wind vibration.

[0003] High-rise buildings typically use dampers to combat the adverse effects of wind vibration. However, traditional dampers are usually installed inside the building. Due to the structural characteristics of chimneys and towers, dampers often have poor compatibility or unsatisfactory vibration reduction effects when applied to such special tall structures. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A suspended frequency-modulated mass damper for towers and chimneys is provided, which is installed on the thickened part of the tower / chimney shell and includes: lug support, lifting lug, spring box, lifting rod, and mass block.

[0006] At least four lug supports are fixedly connected to the outer wall of the thickened portion of the cylinder, and all lug supports are evenly distributed. The lifting lug is fixedly connected to the lug support, and at least one spring box is installed on the lug support. The upper part of the lifting rod is movably connected to the lug support through the spring box, and the lower part of the lifting rod is fixedly connected to the mass block. The ends of two adjacent mass blocks are connected to each other to form a ring-shaped counterweight structure around the cylinder. The ring-shaped counterweight structure swings back and forth and / or left and right relative to the cylinder under the action of the lifting rod and the spring box. A gap is provided between the inner ring of the ring-shaped counterweight structure and the cylinder to avoid the ring-shaped counterweight structure hitting the cylinder when swinging.

[0007] In a preferred embodiment of this utility model, the lifting lugs are symmetrically arranged on the ear-type supports on both sides of the cylinder.

[0008] In a preferred embodiment of this utility model, the lifting lug is made of steel rod, and the two ends of the steel rod are welded to the lug support.

[0009] In a preferred embodiment of this utility model, the mass block is made of Q235B steel plate.

[0010] In a preferred embodiment of this utility model, the spring box and the lifting rod are connected in a one-to-one correspondence, and one of the mass blocks is connected to the lug support through at least one set of the spring box and the lifting rod.

[0011] In a preferred embodiment of this utility model, the boom is detachably connected to the mass block and the lug support.

[0012] In a preferred embodiment of the present invention, the end of the mass block is fixedly connected to the adjacent mass block by screws.

[0013] In a preferred embodiment of the present invention, the mass block has an arc-shaped structure, and multiple mass blocks are connected to form a circular counterweight structure, and the circular counterweight structure is concentrically arranged with the cylinder.

[0014] The beneficial effects of this utility model are: Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 This is a side view of a preferred embodiment of a suspended frequency-modulated mass damper for towers and chimneys according to the present invention.

[0017] Figure 2 This is a top view schematic diagram of a preferred embodiment of a suspended frequency-modulated mass damper for towers and chimneys according to the present invention. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figure 1-2 The embodiments of this utility model include:

[0020] A suspended frequency-modulated mass damper for towers and chimneys, as an effective vibration control device, with reasonable construction and placement, can effectively reduce the dynamic response caused by wind vibration when applied to chimneys or towers in high wind pressure areas, thus ensuring the safety of chimneys and towers.

[0021] A suspended frequency-modulated mass damper for towers and chimneys is installed on the thickened portion 20 of the cylinder 10 of the tower or chimney. Its structure includes: lug support 1, lifting lug 2, spring box 3, lifting rod 4, and mass block 5.

[0022] At least four lug supports are fixedly connected to the outer wall of the cylinder, and all lug supports are evenly arranged in a ring. Lifting lugs are fixedly connected to the lug supports for easy lifting. At least one spring box is installed on the lug support to provide elastic restoring force. The upper part of the lifting rod is movably connected to the lug support through the spring box. A mass block is fixedly connected to the lower part of each lifting rod. The ends of two adjacent mass blocks are connected to form a ring-shaped counterweight structure around the cylinder. The ring-shaped counterweight structure swings back and forth and / or left and right relative to the cylinder under the action of the lifting rod and the spring box. A gap is provided between the inner ring of the ring-shaped counterweight structure and the cylinder to avoid the ring-shaped counterweight structure hitting the cylinder when swinging.

[0023] The spring box uses existing technology.

[0024] Furthermore, the lifting lugs are symmetrically arranged on the lug supports on both sides of the cylinder.

[0025] Furthermore, the lifting lugs are made of steel rods, with both ends of the steel rods welded to the lug supports, which eliminates the need for lifting lugs on the chimney and the tower itself.

[0026] Furthermore, the mass block is made of Q235B steel plate.

[0027] Furthermore, the spring boxes and the lifting rods are connected in a one-to-one correspondence, and a mass block is connected to the lug support through at least one set of spring boxes and lifting rods.

[0028] Furthermore, the boom is detachably connected to the mass block and lug support to allow for the installation of booms of different lengths.

[0029] Furthermore, the ends of the mass blocks are fixedly connected to adjacent mass blocks by fasteners such as screws.

[0030] Furthermore, each mass block has an arc-shaped structure, meaning that both the inner and outer sides of the mass block are arc-shaped. Multiple mass blocks are connected to form a circular counterweight structure, and the circular counterweight structure is concentrically set with the cylinder.

[0031] In use, the lug supports are first welded to the thickened part of the cylinder. Then, a certain number of spring boxes, hangers and mass blocks are installed as needed. By selecting mass blocks of different weights and hangers of different lengths, the parameters such as the mass ratio, frequency ratio and damping ratio of the damper to the main structure (cylinder) are adjusted so that the damper can absorb more energy and thus reduce the vibration response of the main structure.

[0032] The damping principle of a suspended frequency-modulated mass damper is as follows: the frequency of the damper itself is adjusted to be close to the control frequency of the main structure (cylinder). When external forces (wind, earthquake) cause the main vibration frequency of the chimney and tower to be excited, the ring counterweight structure will resonate in the opposite direction to the main structure under the action of the spring box and the hanger. At this time, the energy acting on the chimney and tower will be dissipated by the frequency-modulated mass, and the energy input to the main structure will be reduced, thereby reducing the dynamic response of the main structure.

[0033] The beneficial effects of this utility model of a suspended frequency-modulated mass damper for towers and chimneys are:

[0034] 1. The damper can be adjusted according to the characteristics of the main structure and actual usage requirements, which improves the effect of reducing the vibration response of the main structure, better meets the special requirements of chimneys and towers in terms of wind vibration resistance, effectively reduces the possibility of equipment deformation and damage caused by wind vibration, and ensures the safe and stable operation of the equipment.

[0035] 2. The structure is simple and easy to manufacture, which can reduce the wall thickness required for chimneys and towers due to external loads, thereby reducing the overall cost of the chimneys and towers.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, 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 suspended frequency-modulated mass damper for towers and chimneys, installed on the thickened portion of the tower / chimney shell, characterized in that, include: Ear-type support, lifting lug, spring box, lifting rod, mass block, At least four lug supports are fixedly connected to the outer wall of the thickened portion of the cylinder, and all lug supports are evenly distributed. The lifting lug is fixedly connected to the lug support, and at least one spring box is installed on the lug support. The upper part of the lifting rod is movably connected to the lug support through the spring box, and the lower part of the lifting rod is fixedly connected to the mass block. The ends of two adjacent mass blocks are connected to each other to form a ring-shaped counterweight structure around the cylinder. The ring-shaped counterweight structure swings back and forth and / or left and right relative to the cylinder under the action of the lifting rod and the spring box. A gap is provided between the inner ring of the ring-shaped counterweight structure and the cylinder to avoid the ring-shaped counterweight structure hitting the cylinder when swinging.

2. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The lifting lugs are symmetrically arranged on the ear-type supports on both sides of the cylinder.

3. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The lifting lug is made of steel rod, and the two ends of the steel rod are welded to the lug support.

4. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The mass block is made of Q235B steel plate.

5. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The spring box and the lifting rod are connected in a one-to-one correspondence, and one of the mass blocks is connected to the lug support through at least one set of spring boxes and the lifting rod.

6. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The boom is detachably connected to the mass block and the lug support.

7. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The end of the mass block is fixedly connected to the adjacent mass block by screws.

8. A suspended frequency-modulated mass damper for towers and chimneys according to claim 1, characterized in that, The mass block has an arc-shaped structure, and multiple mass blocks are connected to form a circular counterweight structure, and the circular counterweight structure is concentrically arranged with the cylinder.

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