CN211421440U

CN211421440U - Multi-control tuning mass damping device for tower mast structure and tower mast structure

Info

Publication number: CN211421440U
Application number: CN201921784736.7U
Authority: CN
Inventors: 王新娣; 闵志华; 刘卓
Original assignee: Shanghai Jiangu Damping Technology Co ltd
Current assignee: Wuxi Jiangu earthquake reduction and Isolation Technology Co.,Ltd.
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-09-04
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a harmonious quality damping device of many regulations and control and tower mast structure relates to damping vibration attenuation technical field. The multi-regulation tuned mass damping device comprises a shell, a rigidity system, a mass system and a damping system; the stiffness system comprises a primary stiffness system and a secondary stiffness system; the mass system comprises a mass block, the height of the mass block is adjustable, and the vibration absorption frequency is adjusted by adjusting the height of the mass block in the main rigidity system; the dampers of the damping system are connected to the mass so that the mass can elastically oscillate in the housing with the primary stiffness system as a support. The utility model provides a damping device has set up main rigidity system and supplementary rigidity system, and supplementary rigidity system can provide extra rigidity, and the mass system rigid coupling can in time react small vibration on the column component, and sensitivity is good.

Description

Multi-control tuning mass damping device for tower mast structure and tower mast structure

Technical Field

The utility model relates to a damping vibration attenuation technical field especially relates to a harmonious mass damping device and tower mast structure.

Background

The load effect of high-rise buildings such as tower mast structures in the horizontal direction is obvious, so wind load and earthquake load are main control factors of structural design. Particularly, for a single tower mast structure, in order to adapt to more and more equipment types and quantities, the conventional solution of wind load is to increase the quantity of the tower mast structure or increase the appearance and steel consumption of the single tower structure on one hand, and to arrange various structural damping devices on the other hand.

The structural damping device (or called dynamic vibration absorber) belongs to one of the passive control measures of the structure, and is mainly applied to wind resistance, earthquake resistance and improvement of the comfort of human bodies. Tuned mass damping devices are commonly used which provide a force of approximately equal frequency, opposite to the direction of motion of the structure, when the primary structure is subjected to an external dynamic force, thereby partially or totally canceling the structural response caused by the external excitation. When the vibration damping device is applied, the purposes of reducing the vibration reaction of the main body structure and increasing the structural load capacity can be achieved by reasonably designing the mass, the rigidity and the damping coefficient.

The prior art tuned mass damping devices are generally divided into three major parts, namely a stiffness system, a mass system and a damping system, from the component composition. The parts can form different types of damping devices through different combination modes. Taking a commonly-used tuned mass damping device as an example, under a conventional scheme, a mass system adopts a mass block, the bottom of the mass block is provided with a pulley, a rigidity system adopts a spring, and a damping system can adopt a rod type damper or a damping box or an eddy current damper. The above scheme has the following defects:

on the one hand, the sensitivity is not high. The rigidity system adopts the spring, though advantages such as the reliability is strong, but on-the-spot frequency regulation, strong durability, the quality system bottom need set up supporting member such as pulley, and these supporting member have certain friction with the floor to lead to its operating condition to need an initial starting force, be difficult to in time react when the slight vibration, sensitivity is general.

On the other hand, it is difficult to continuously adjust the frequency. The current frequency adjustment methods include the following two methods: one is to adjust the frequency by increasing or decreasing the mass size, which can affect the damping effect, especially when the mass decreases, which can result in a reduction of the damping effect. Secondly, the frequency is adjusted by replacing the spring, and the defect is that the actual operation is troublesome. And the two adjusting methods both belong to discrete methods, and the frequency can only be adjusted to a certain fixed value in a controllable range and is difficult to be adjusted to any value in the controllable range.

Disclosure of Invention

The utility model aims to provide a: the defects of the prior art are overcome, and the multi-control tuning mass damping device for the tower mast structure and the tower mast structure are provided. The utility model adopts the column member as the main rigidity system of the tuned mass damping device, and sets the auxiliary rigidity system to assist the column rigidity system to provide extra rigidity; the mass system is just connected on the column member, can respond to the micro-vibration in time, and sensitivity is good.

In order to achieve the above object, the utility model provides a following technical scheme:

a multi-control tuning mass damping device for a tower mast structure comprises a shell, a rigidity system, a mass system and a damping system, wherein the rigidity system, the mass system and the damping system are arranged in the shell;

the stiffness system comprises a primary stiffness system for the column element as a lower support for the mass system and a secondary stiffness system for the secondary column element to provide additional stiffness;

the mass system comprises a mass block, one end of a column member is rigidly connected with the shell, the other end of the column member is rigidly connected with the bottom of the mass block, the height of the mass block on the column member is adjustable, and the vibration absorption frequency is adjusted by adjusting the height of the mass block on the column member; the damping system includes one or more dampers having one end connected to the housing and the other end connected to the mass such that the mass can resiliently oscillate in the housing with the post members as supports.

Further, the auxiliary stiffness system comprises one or more groups of springs, each group of springs comprises one or more springs horizontally arranged between the mass block and the inner wall of the shell, one end of each spring is connected with the mass block, and the other end of each spring is connected with the inner wall of the shell.

Further, a plurality of horizontally arranged springs of each set of springs are mounted around the mass in a centrosymmetric manner.

Furthermore, the springs are detachably arranged between the mass block and the inner wall of the shell, and the damping frequency is adjusted or assisted to be adjusted by replacing the springs with different stiffness.

Further, the damper is a rod-type damper, and the rod-type dampers are symmetrically arranged around the mass block.

Further, the damper is a damping box which comprises a box body filled with a viscous body and one or more upper components inserted into the viscous body; one of the housing and the upper member is mounted on the mass and the other is mounted on the housing, the upper member moving in a viscous body in the housing when vibrating to generate a damping force.

Further, the damper is an eddy current damper, the eddy current damper comprises a permanent magnet, magnet back iron, a conductor plate and conductor back iron, and the permanent magnet is positioned between the magnet back iron and the conductor plate; one of the permanent magnet and the conductor plate is arranged on the mass block, and the other one is arranged on the shell; when the vibration is carried out, the conductor plate and the permanent magnet move relatively, the conductor plate cuts magnetic lines of force to generate eddy current to interact with the permanent magnet, and damping force for blocking the relative movement is generated.

Further, the column member is a single rod member, a plurality of rod members or a lattice structure composed of one or more of metal rods, carbon fiber rods and glass fiber rods;

the mass block is formed by mixing one or more of steel, lead block, concrete and grouting material.

The utility model also provides a tower mast structure, including the pipe tower main part, pipe tower main part upper portion is provided with platform and antenna, install aforementioned many regulations and control harmonious mass damping device on pipe tower main part and/or platform and/or the antenna.

Further, the multi-regulation tuning mass damping device is fixed on the pipe tower main body through a mounting ring, and/or

Directly fixing the multi-control tuned mass damping device on the existing ring-shaped member of the tubular tower body, and/or

Securing multiple tuned mass damping devices to the sides of, or above, or below, the mast body, e.g. and/or

The upper part of the pipe tower main body is provided with a decorative ring, and the multi-control tuning mass damping device is fixed above or inside the decorative ring, and/or

The upper part of the pipe tower main body is provided with a decoration ring bracket, and the multi-regulation tuned mass damping device is fixed on two sides or up and down of the decoration ring bracket, and/or

A plurality of multi-control tuned mass damping devices are combined into a ring and fixedly installed on the periphery of the pipe tower, and a base ring for installing the plurality of tuned mass damping devices is arranged on the periphery of the pipe tower.

The utility model discloses owing to adopt above technical scheme, compare with prior art, as the example, have following advantage and positive effect:

1) the column member is used as a primary stiffness system for the tuned mass damping device and an auxiliary stiffness system is provided to assist the column stiffness system in providing additional stiffness.

2) The main rigidity system adopts the column component as the lower part support of mass system, and the mass system directly just connects on the column component, and the during operation need not initial starting force, can in time react when the micro-vibration, and its sensitivity is good.

3) The stiffness and frequency of the damping device can be adjusted conveniently. During operation, the frequency can be adjusted by replacing the spring, and the relative position of the mass block on the column member can be adjusted to realize the continuous adjustment of the rigidity and the frequency, so that the adjusting mode is convenient, simple and effective; the existence of the spring increases the adjustable frequency range and utilizes the space to the maximum extent.

4) The mass block is not required to be changed when the frequency is adjusted, and compared with the traditional scheme of adjusting the frequency by adjusting the size of the mass block, the influence of frequency adjustment on the vibration reduction effect of the damping device is reduced.

5) The tuning mass damping device can be flexibly arranged on a tower main body and/or a platform and/or an antenna of the tower mast structure according to requirements, and has the advantages of simple structure, convenience in installation and convenience in maintenance and management.

Drawings

Fig. 1 is a schematic structural diagram of a multi-regulation tuned mass damping device provided in an embodiment of the present invention.

Fig. 2 is a schematic plan view of the auxiliary stiffness system of fig. 1.

Fig. 3 is a schematic view of the installation of the tuned mass damping device in the building according to the embodiment of the present invention.

Fig. 4 is a schematic structural view of a single-rod damper according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a box-type tuned mass damping device according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a box-type viscous damper according to an embodiment of the present invention.

Fig. 7 is a schematic view of a multi-upright-rod structure of the box-type viscous damper according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of an eddy current type tuned mass damping device according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of an eddy current damper according to an embodiment of the present invention.

Fig. 10 is a schematic diagram of an eddy current damper according to an embodiment of the present invention.

Fig. 11 is a schematic view of a connection structure between a mass block and a column member according to an embodiment of the present invention.

Fig. 12 is a schematic diagram of the relative position of the proof mass of fig. 11 on the column member.

Fig. 13 is a schematic structural view of a column member according to an embodiment of the present invention.

Fig. 14 to 17 are schematic views illustrating an installation of the tuned mass damping device on the tower mast according to the embodiment of the present invention.

Description of reference numerals:

tuned mass damping device 100;

a housing 110;

primary stiffness system 120, rod 121, connecting member 122;

a mass system 130;

a damping system 140;

a rod damper 140a, a cylinder 141a, a piston rod 142a, an orifice 143a, a cover 144a, a viscous body 145a, a closed space 148 a;

a damping case 140b, a case body 141b, a receiving chamber 142b, an upper member 143b, a viscous body 144b, a partition plate 145b, a cell 146 b;

an eddy current damper 140c, a permanent magnet 141c, a magnet back iron 142c, a conductor plate 143c, a conductor back iron 144c, a mounting bracket 145 c;

a secondary stiffness system 150;

a communication tower 200;

a mounting platform 210;

a base ring 300.

Detailed Description

The following describes the multi-control tuned mass damping device for a tower mast structure and the tower mast structure in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments. Thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

It should be noted that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes should fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and purposes that the present invention can achieve. The scope of the preferred embodiments of the present invention includes other implementations in which functions may be performed out of the order described or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

Examples

Referring to FIG. 1, a multiple tuned mass damping device for a tower mast structure includes a housing 110, and a stiffness system, a mass system 130, and a damping system 140 disposed in the housing 110.

The housing 110 includes a main frame and a containment plate, the main frame forms a skeleton of the housing, and the containment plate forms a peripheral protection of the housing. Specifically, the enclosure steel sheet can include roof, bottom plate and side wall board, according to the shape of shell, side wall board can constitute circularly, also can constitute squarely, or other shapes, and it should not regard as right the utility model discloses a restriction.

The stiffness system includes a primary stiffness system 120 and a secondary stiffness system 150.

The primary stiffness system 120 includes column elements that act as the lower support for the mass system.

The secondary stiffness system 150 is used to assist the column elements in providing additional stiffness.

The mass system comprises a mass block, one end of the column member is rigidly connected with the shell, and the other end of the column member is rigidly connected with the bottom of the mass block.

The height of the mass block on the column element can be adjusted, and the vibration absorption frequency can be adjusted by adjusting the relative height of the mass block on the column element.

The damping system 140 includes one or more dampers having one end connected to the housing and the other end connected to the mass such that the mass can resiliently oscillate in the housing with the post members as supports.

The secondary stiffness system 150 may be selected from a variety of configurations that provide resilient support, such as, by way of example and not limitation, springs, elastomers, leaf springs, and the like.

In this embodiment, the auxiliary stiffness system 150 may preferably include one or more sets of springs, each set of springs including one or more springs horizontally disposed between the mass and the inner wall of the housing, one end of the spring being connected to the mass and the other end of the spring being connected to the inner wall of the housing. The multiple groups of springs can be arranged at intervals along the vertical direction of the mass block.

Referring to fig. 2, a plurality of horizontally disposed springs of each set of springs are mounted in a centrally symmetric manner around the mass.

Considering the adjustment of the auxiliary stiffness system to the frequency and the stiffness, the springs are detachably mounted between the mass block and the inner wall of the shell, and the damping frequency is adjusted or assisted to be adjusted by replacing the springs with different stiffness.

The above technical scheme, the shell is as whole damping device's peripheral skeleton and protective structure, and the column component still provides supplementary rigidity through the spring as supplementary rigidity system and adjusts as the main rigidity system of damping device, and the quality piece has just been connect on the column component as mass system, and the attenuator is as damping device's damping system, and in the cooperation target object damping, still effectual vibrational time and the vibration stroke that reduces damping device self, dissipation vibration energy. Meanwhile, the utility model can adjust the frequency by replacing the spring, and also can continuously adjust the rigidity and the frequency of the damping device by adjusting the relative position of the mass block on the column member, thereby realizing the continuous adjustment of the frequency, and the adjusting mode is convenient, simple and effective; and the existence of the spring increases the adjustable frequency range and utilizes the space to the maximum extent.

Referring to fig. 3, taking the communication tower 200 as an example, by adding one or more damping devices as described above to the communication tower 200, when the main structure of the communication tower 200 is subjected to an external dynamic force (e.g., wind load), the damping devices provide a force with a frequency close to or equal to the frequency and opposite to the moving direction of the structure, so as to partially or completely cancel the structural response caused by the external excitation.

The tuned mass damping device 100 of the stick type can be mounted on a communications tower 200 in a centrally symmetric fashion by means of a mounting platform 210, which, in conjunction with the sectional view a-a in fig. 3, illustrates the manner in which 3 tuned mass damping devices 100 are provided.

With continued reference to fig. 1, in one embodiment, the dampers are rod dampers, with a plurality of rod dampers symmetrically disposed about the mass.

Preferably, the plurality of rod dampers are arranged in a central symmetry with respect to the mass block. By way of example and not limitation, if the damping system 140 includes 4 rod dampers, the 4 rod dampers are disposed at 90 degrees to each other, so as to form damping for the mass swinging back and forth and left and right respectively.

The rod-type damper can be a single-rod-type viscous damper, a double-rod-type viscous damper, a friction damper or a viscoelastic damper, and the viscous body is fluid or semi-fluid.

The rod viscous damper is composed of piston, oil cylinder and damping hole, and is a damping device which utilizes the pressure difference between front and back of piston to make oil flow through the damping hole to produce damping force. For example, taking a single-rod viscous damper as an example, the damper may include a piston cylinder, a piston is disposed in the cylinder, the piston divides an inner chamber of the cylinder into a first piston chamber and a second piston chamber, viscous bodies are filled in the two piston chambers respectively as damping media, a piston rod is connected to the piston, and the other end of the piston rod is connected to an ear ring. In view of the sealing performance, a sealing device is further arranged in the cylinder barrel, and for example, the cylinder barrel, the sealing device and the piston rod can be sealed through a sealing ring. The working principle is as follows: when receiving external force, external force can promote piston rod and piston motion in the cylinder, and the piston bulldozes the damping medium of first piston chamber (or second piston chamber), makes the viscous body pass through the damping hole, produces friction damping, and then the dissipation vibration energy that receives.

The viscous body is preferably compressible silicone oil.

In this embodiment, referring to fig. 4, the rod damper 140a preferably includes a cylinder 141a and a pair of covers 144a, and a viscous body 145a is filled in a closed space 148a surrounded by the cylinder 141a and the covers 144 a. A piston rod 142a may be provided on one end cover 144a or both end covers 144a, as shown in fig. 4, illustrating that the piston rod 142a is provided on the left end cover 144a, which constitutes a single-rod type viscous damper. Of course, if necessary, a double-rod viscous damper may be configured by providing a piston rod on both the left and right end covers 144 a.

The piston on the piston rod 142a divides the aforementioned enclosed space 148a into 2 piston chambers, both of which are filled with the viscous body 145 a. When vibrating, the piston rod 142a moves to enable the viscous body 145a to pass through the throttling hole or enable the viscous body 145a to perform relative motion in a closed space, and therefore vibration energy is dissipated.

In another embodiment, as shown in FIG. 5, the damper is a damping tank. The damping box comprises a box body filled with a viscous body and one or more upper components inserted into the viscous body; one of the housing and the upper member is mounted on the mass and the other is mounted on the housing, the upper member moving in a viscous body in the housing when vibrating to generate a damping force.

For example, the damping chamber may be mounted above the mass. At this time, the lower part of the damping box body is mounted on the mass block, the lower end of the upper member is inserted into the viscous body, and the upper end of the upper member is connected with the housing. The upper member moves in a viscous body in the case to generate a damping force when vibrating.

Or the damping box is arranged below the mass block. At this time, the case may be fixedly installed at the bottom or side of the housing, and the upper end of the upper member is connected to the mass and the lower end of the upper member is inserted into the viscous body. When vibrating, the mass block swings to drive the upper component to move in the viscous body in the box body to generate damping force.

Referring to fig. 6, the damping case 140b may include a case 141b, and a lower portion of the case 141b is mounted on the mass. By way of example and not limitation, the bottom of the tank 141b may be mounted to the mass by fasteners such as bolts, hoops, and/or adhesives.

A receiving chamber 142b is formed through the case 141b, and the receiving chamber 142b is used to contain the viscous body 144 b. The viscous body is of a fluid or semi-fluid structure.

In correspondence with the housing chamber 142b, an upper member 143b inserted in the viscous body 144b is provided. The lower end of the upper member 143b is inserted into the viscous body 144b, and the upper end of the upper member 143b is coupled to the housing 110 b.

When vibrating, the upper member 143b moves in the viscous body 144b in the case 141b to generate a damping force, thereby absorbing vibration energy and reducing a vibration reaction.

Preferably, the upper member is a vertical rod, and the vertical rods inserted into the viscous body can be arranged into one or more than one vertical rods according to requirements. In specific implementation, the vertical rod can be made of metal materials, wood materials or composite materials; the total length of the vertical rod, the insertion length ratio (the ratio of the length in the viscous body 144b to the total length), and the cross-sectional form can be flexibly arranged according to the requirement to adjust the damping force.

The top of the box body can be provided with a top cover and can also be collected to be arranged in an open mode. Preferably, the top of the box body is arranged in an open mode, so that the problem that internal heat is not easy to dissipate can be solved. Of course, in consideration of the loss of the viscous body 144b caused by the open arrangement, a level alarm may be provided to monitor the amount of the viscous body 144b, and when the amount of the viscous body 144b is lower than the preset scale line, a warning message may be issued by the hydraulic alarm to remind the maintenance personnel to perform the inspection and the viscous body replenishment.

For a multiple pole damper box structure, it is preferable that a separate cell is provided in the box body 141b corresponding to each pole, and each pole is inserted into the cell containing the viscous body 144 b.

Referring to fig. 7, the receiving chamber 142b formed by the case 141b is divided into 3 cells 146b by a partition plate 145b, each cell 146b is provided with a vertical rod therein, the upper end of the solid is fixed by the case 110, and the lower end of the vertical rod is inserted into the viscous body 144 b. Under the action of earthquake or wind load, the box body swings along with the mass block, and the vertical rod moves in the viscous body 144b to generate damping force, so that the vibration-proof energy consumption function is provided for the structure.

The number of the cells 146b in the box 141b may also be adjusted as required to adjust the damping force, so as to achieve the damping force adjustable function of the viscous damping box. Meanwhile, the motion of the multiple vertical rods in any direction in the viscous body can generate damping force, and the multidirectional viscous energy dissipation effect of the structure can be realized.

In another embodiment, as shown in figure 8, the damper is an eddy current damper. The motion mechanical energy is converted into the electric energy of the conductor plate through the electric eddy current damper, and then the electric energy is finally converted into the heat energy through the resistor of the conductor plate to be consumed, so that the damping effect is generated. The eddy current damper not only can realize non-contact and no mechanical abrasion, but also does not need initial starting force, and has the advantages of simple structure, low maintenance requirement and good durability.

Referring to fig. 9, in particular, the eddy current damper 140c includes a permanent magnet 141c, a magnet back iron 142c, a conductor plate 143c, and a conductor back iron 144c, and the permanent magnet 141c is located between the magnet back iron 142c and the conductor plate 143 c. One of the permanent magnet 141c and the conductor plate 143c is mounted on the mass, and the other is mounted on the housing. When the vibration is generated, the conductor plate 143c and the permanent magnet 141c move relative to each other, and the conductor plate 143c cuts magnetic lines of force to generate an eddy current, which interacts with the permanent magnet 141c, thereby generating a damping force that resists the relative movement.

One side of the conductor back iron 144c can be fixedly arranged on the mass block, and the other side opposite to the side is provided with a conductor plate 143 c; the magnet back iron 142c may be fixedly mounted on the inner wall of the housing 110c by a mounting bracket 145c, and a pair of permanent magnets 142c are mounted on the surface of the magnet back iron 142c at intervals apart from the conductor plate 143c (disposed at intervals from the conductor plate). The magnetic poles of the permanent magnet pair are reversed, and when the conductor plate 143c and the permanent magnet 141c move relatively, the conductor plate 143c cuts magnetic lines of force to generate an eddy current, and the eddy current interacts with the permanent magnet 141c to generate a damping force for blocking the relative movement, as shown in fig. 10.

In the present embodiment, the interval between the conductor plate and the permanent magnet is adjustable in consideration of adjustment of the magnitude of the damping force.

In one embodiment, the conductive plate 143c is movably mounted on the surface of the conductive back iron 144c, so that the distance between the conductive plate 143c and the surface of the conductive back iron 144c can be adjusted, thereby adjusting the distance between the conductive plate 143c and the permanent magnet 141c, and adjusting the damping force.

In another embodiment, the conductor back iron 144c is movably mounted on the mass, so that the distance between the conductor back iron 144c and the mass can be adjusted, thereby adjusting the separation distance between the conductor plate 143c on the conductor back iron 144c and the permanent magnet 141c to adjust the magnitude of the damping force.

Of course, the mounting bracket 145c may also be provided as a length-adjustable bracket, as desired. By way of example and not limitation, mounting bracket 145c may include a mounting beam for securing magnet back iron 142c and a pair of bracket arms, one on each side of the mounting beam, with one end of the bracket arms attached to the mounting beam and the other end attached to housing 110 c. The support arm is of a telescopic structure, and the height of the mounting beam is adjusted through the telescopic of the support arm, so that the spacing distance between the permanent magnet on the magnet back iron 142c and the conductor plate is adjusted to adjust the damping force.

Referring to fig. 11, the height of the mass block on the column member is adjustable, and the vibration absorption frequency is adjusted by adjusting the height of the mass block on the column member.

According to the structural dynamics, the damping device belongs to a single-degree-of-freedom system, and the calculation formula of the frequency of the damping device is as follows:

wherein ω is the circular frequency; k is stiffness; m is mass; f is the frequency.

For the column structure, taking a solid center iron rod as an example,

the calculation formula for the stiffness k is as follows:

wherein E is the elastic modulus of the upright post material; h is the height from the center of the mass block to the ground of the upright post; and I is the section moment of inertia.

The calculation formula of the section inertia moment I is as follows:

wherein D is the diameter of the upright column.

And (4) integrating the formulas (1) to (4), and calculating to obtain a final frequency calculation formula as follows:

according to the formula (5), when the section, the material and the mass block of the upright post are not changed, the frequency of the damping device can be adjusted by adjusting the height position of the mass block on the upright post.

Referring to fig. 12, for example, when the frequency of the damper device needs to be increased, the height H may be reduced to a height H1.

Specifically, in an implementation manner of this embodiment, a hole is provided in the mass block, through which the column member passes, and the column member is provided with a limiting piece along the axial length, so that the mass block is fixed at a preset height position of the column member through the limiting piece.

For example, the position limiter may be a screw thread arranged along the axial length direction of the column member, and the inner wall of the hole of the mass block may be provided with an internal screw thread matching with the screw thread, so that the position of the mass block on the column member can be adjusted by rotating in the forward direction or the reverse direction.

Of course, the limiting part may also adopt a hoop, a buckle, a clamp, or other limiting structures as required, so long as the mass block can be fixed at a preset height position of the column member, and the mass block may be integrally arranged with the column member or may be separately arranged from the column member.

The utility model provides an above-mentioned scheme comes continuous adjustment product rigidity and frequency through adjusting the relative position of quality piece on the stand, can realize that the continuity of frequency is adjusted, and the regulative mode is convenient, simple, effective.

In another embodiment, the column element comprises an upper part and a lower part, the upper part is used for fixing the mass block, the length of the lower part is adjustable, and the height of the column element is adjusted by adjusting the length of the lower part, so that the height of the mass block fixed on the upper part is adjusted.

By way of example and not limitation, the lower part of the column member is provided with a nested telescopic rod, so that the lower part can be adjusted in a lifting way, and the lower part is fastened through a locking bolt after the adjustment in the lifting way is completed. The locking bolt is arranged at the joint of the telescopic rod. As a typical example, for example, the lower portion of the upright post may include an outer post and an inner post, the lower end of the outer post is sleeved outside the inner post, the upper end of the inner post is nested inside the lower end of the outer post, and a locking bolt is disposed at the joint of the outer post and the inner post. When the length of the lower part needs to be adjusted, the locking bolt is firstly rotated to unlock, then the inner column axially moves into the outer column, and after the required height is adjusted, the locking bolt is reversely rotated to lock. When the length of the lower portion is increased, the height of the mass fixed to the upper portion is increased.

In this embodiment, the column member may be a single rod member, a plurality of rod members, or a lattice structure composed of one or more of metal rods, carbon fiber rods, and glass fiber rods.

Referring to fig. 13, a single rod, multiple rods or lattice structure is illustrated. The single rod is composed of a rod 121, the multiple rods are composed of more than 2 rods 121 arranged at intervals, the main body of the lattice structure is composed of the multiple rods 121 arranged at intervals, and the multiple rods are connected into a whole through connecting members 122.

The metal rod is, for example, a steel rod, an iron rod, a copper rod or an aluminum rod. Besides carbon fiber rods and glass fiber rods, other composite materials can be adopted according to the needs.

The mass block can be formed by mixing one or more of steel, lead block, concrete and grouting material.

The utility model discloses a another embodiment still provides a tower mast structure. The tower mast structure comprises a communication tower or various building structures of a transmission line tower and a fan tower provided with communication equipment.

The tower mast structure comprises a tubular tower main body, a platform and an antenna are arranged on the upper portion of the tubular tower main body, and the tuning mass damping device is mounted on the tubular tower main body and/or the platform and/or the antenna.

The tube tower main body preferably adopts a cylinder structure, and equipment such as a working platform, antenna equipment, a lightning rod and the like are installed at a preset height on the upper portion of the cylinder structure according to needs.

Preferably, the tuned mass damping device may be mounted on the tower mast structure in one of the following ways.

Referring to fig. 14, tuned mass damper assembly 100 is secured to a tubular tower body by a mounting collar, in the manner indicated at 1 in fig. 14.

And/or, the tuned mass damper assembly 100 is secured directly to the existing annular member of the tubular tower body, in the manner designated 2 in fig. 14.

And/or, the tuned mass damping device 100 is secured to the side of, above, or below the mast body. The attachment to the side of the mast body is illustrated in the manner labeled 3 in fig. 14.

Referring to fig. 15, when the upper portion of the tubular tower body is provided with a cosmetic ring, tuned mass damper assembly 100 may be secured over or inside the cosmetic ring. The means marked 4 in fig. 15, illustrating the fixing above the bezel; the fastening to the inside of the bezel is illustrated in the manner marked 5 in fig. 15.

And/or, when a collar corbel is provided on the upper portion of the tubular tower body, the tuned mass damper assemblies 100 are secured to either side or up and down the collar corbel, as illustrated at 6 in fig. 15.

Referring to fig. 16, a plurality of tuned mass dampers 100 can be fixed on the outer periphery of the tubular tower in a ring shape. The manner in which the 6 tuned mass dampers 100 are assembled to form a damping ring mounted on the tower outer circumference is illustrated by way of example in fig. 16, which is labeled 7.

Preferably, referring to fig. 17, the outer periphery of the tubular tower is provided with a base ring 300 for installing a plurality of tuned mass dampers, and the plurality of tuned mass dampers 100 are all fixed on the base ring 300 to form a ring-shaped damper unit.

Other technical features of the tuned mass damping device 100 are referred to in the previous embodiments and will not be described herein.

In the description above, the disclosure of the present invention is not intended to limit itself to these aspects. Rather, the various components may be selectively and operatively combined in any number within the intended scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be interpreted as inclusive or open-ended, rather than exclusive or closed-ended, by default, unless explicitly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. Common terms found in dictionaries should not be interpreted too ideally or too realistically in the context of related art documents unless the present disclosure expressly limits them to that. Any alterations and modifications of the present invention based on the above disclosure will be apparent to those skilled in the art from the present disclosure, and all such modifications and modifications are intended to fall within the scope of the appended claims.

Claims

1. A multi-control tuning mass damping device for a tower mast structure, comprising a housing, and a stiffness system, a mass system and a damping system arranged in the housing, characterized in that:

2. The multi-tuned mass damping device according to claim 1, wherein: the auxiliary stiffness system comprises one or more groups of springs, each group of springs comprises one or more springs horizontally arranged between the mass block and the inner wall of the shell, one end of each spring is connected with the mass block, and the other end of each spring is connected with the inner wall of the shell.

3. The multi-tuned mass damping device according to claim 2, wherein: a plurality of horizontally arranged springs of each set of springs are mounted around the mass in a centrosymmetric manner.

4. The multi-tuned mass damping device according to claim 2 or 3, wherein: the springs are detachably arranged between the mass block and the inner wall of the shell, and the damping frequency is adjusted or assisted to be adjusted by replacing the springs with different stiffness.

5. The multi-tuned mass damping device according to claim 1, wherein: the damper is a rod type damper, and the rod type dampers are symmetrically arranged around the mass block.

6. The multi-tuned mass damping device according to claim 1, wherein: the damper is a damping box which comprises a box body filled with a viscous body and one or more upper components inserted into the viscous body; one of the housing and the upper member is mounted on the mass and the other is mounted on the housing, the upper member moving in a viscous body in the housing when vibrating to generate a damping force.

7. The multi-tuned mass damping device according to claim 1, wherein: the damper is an eddy current damper, the eddy current damper comprises a permanent magnet, magnet back iron, a conductor plate and conductor back iron, and the permanent magnet is positioned between the magnet back iron and the conductor plate; one of the permanent magnet and the conductor plate is arranged on the mass block, and the other one is arranged on the shell; when the vibration is carried out, the conductor plate and the permanent magnet move relatively, the conductor plate cuts magnetic lines of force to generate eddy current to interact with the permanent magnet, and damping force for blocking the relative movement is generated.

8. The multi-tuned mass damping device according to any of claims 1, 2, 5, 6 or 7, wherein: the column member is a single rod member, a plurality of rod members or a lattice structure consisting of one or more of metal rods, carbon fiber rods and glass fiber rods;

9. The utility model provides a tower mast structure, includes the tubular tower main part, tubular tower main part upper portion is provided with platform and antenna, its characterized in that: the multi-tuned mass damping device of any of claims 1-8 is mounted on the tube tower body and/or platform and/or antenna.

10. The tower mast structure of claim 9, wherein:

the multi-regulation tuning mass damping device is fixed on the pipe tower main body through a mounting ring, and/or

Securing a multi-tuned mass damping device to the side of, above, or below the mast body, and/or