CN212053291U - Suspension type tuning mass damping device with large adjustable range - Google Patents
Suspension type tuning mass damping device with large adjustable range Download PDFInfo
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- CN212053291U CN212053291U CN201922288350.3U CN201922288350U CN212053291U CN 212053291 U CN212053291 U CN 212053291U CN 201922288350 U CN201922288350 U CN 201922288350U CN 212053291 U CN212053291 U CN 212053291U
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Abstract
The utility model discloses a harmonious mass damping device of suspension type that can regulate and control the scope greatly relates to damping vibration technical field. The tuning mass damping device is characterized in that a main rigidity system is a suspension rod or a suspension rope, the tuning mass damping device is used as a suspension structure of a mass block to install the mass block in a shell, and auxiliary rigidity is a spring and is used for assisting the suspension rod or the suspension rope to provide additional rigidity; the height of the mass block on the suspension rod or the suspension cable can be adjusted to adjust the vibration absorption frequency; the damper adopts a damping box or an eddy current damper, and is arranged at the top, the side or the bottom of the mass block, and the damping box or the eddy current damper generates damping force when the mass block swings in the shell by taking a suspension rod or a suspension rope as a swing rod or a swing rope. The utility model provides a furthest has utilized the space, can in time react when less vibration, and sensitivity is good, can also realize the continuity regulation of frequency simultaneously, and the regulative mode is simple and convenient effective.
Description
Technical Field
The utility model relates to a damping vibration attenuation technical field especially relates to a harmonious mass damping device of suspension type that adjustable control scope is big.
Background
Tuned Mass Dampers (TMDs) are capable of providing a force of nearly equal frequency, opposite to the direction of motion of the structure, when the main structure is subjected to an external dynamic force, thereby partially or fully 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 tuned mass damping device is generally divided into three major parts of 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: 1) the sensitivity is not high. The bottom of the mass system needs to be provided with supporting members such as pulleys, and the supporting members have certain friction with the floor, so that the working state of the mass system needs an initial starting force, the mass system is difficult to react in time during small vibration, and the sensitivity is general. 2) Only can control the vibration in one direction or a plurality of specific opposite directions, and the complex vibration control requirement is difficult to meet. 3) Continuous adjustment of the frequency is difficult to achieve and can affect the damping effect. For example, when the frequency is adjusted by reducing the size of the mass, a reduction in the damping effect is caused, particularly when the mass is reduced.
The suspended Tuned Mass Damper (TMD) has the characteristics of small change to the original structure, simple installation, obvious damping effect and low manufacturing cost as a damping measure. In the prior art, a suspended tuned mass damper of a tower mast structure is usually installed indoors, and the swing period of the tower mast structure is long, so that the tower mast structure needs a long swing length, and a large indoor space needs to be occupied during installation; meanwhile, the structure is inconvenient to install and debug, the frequency of the tower mast structure is often changed in the using process, the pendulum length of the conventional suspension type tuned mass damper is troublesome to adjust, the self-vibration frequency is possibly inconsistent with the frequency of a high-rise building, and the vibration reduction effect is influenced.
On the other hand, the existing damping system of the suspended TMD usually adopts a piston type damper, the damping parameters are difficult to adjust after the processing is finished, the mechanical abrasion is serious, the regular inspection or replacement is needed, the maintenance cost is high, and the popularization and the application of the suspended TMD in the actual engineering are influenced.
Disclosure of Invention
The utility model aims to provide a: the defects of the prior art are overcome, and the suspension type tuning mass damping device with a large adjustable range is provided. The utility model provides a damping device hangs the mass system directness on hoist cable/jib, sets up the spring simultaneously in the side as supplementary rigidity system, and the at utmost has utilized the space, can in time react when less vibration, and sensitivity is good, can also realize the continuity regulation of frequency simultaneously, and the regulative mode is simple convenient effective.
In order to achieve the above object, the utility model provides a following technical scheme:
a suspension type tuned mass damping device with a large adjustable range comprises a shell, a rigidity system, a mass block and a damper, wherein the rigidity system, the mass block and the damper are arranged in the shell;
the stiffness system comprises a primary stiffness system and a secondary stiffness system; the primary stiffness system is a boom or sling that acts as a suspension structure for the mass mounting the mass in the housing; the auxiliary stiffness is a spring which is horizontally arranged between the mass block and the shell and is used for assisting the suspension rod or the suspension cable to provide additional stiffness;
the suspension rod or the suspension cable is provided with a limiting structure for installing a mass block, and the installation height of the mass block on the suspension rod or the suspension cable is adjusted through the limiting structure so as to adjust the vibration absorption frequency;
the damper is a damping box or an eddy current damper, the damping box or the eddy current damper is arranged at the top, the side or the bottom of the mass block, one end of the damping box or the eddy current damper is connected with the mass block, the other end of the damping box or the eddy current damper is connected with the shell, and the damping box or the eddy current damper generates damping force when the mass block swings in the shell by taking a suspension rod or a suspension rope as a swing rod or a swing rope.
Further, the limiting structure comprises an external thread or a protrusion or a groove arranged on the surface of the hanging rod, and the thread or the protrusion or the groove is used for being matched with the internal thread or the groove or the protrusion on the mass block so as to realize the fixed installation of the hanging rod and the mass block;
the external threads, the bulges or the grooves are arranged in plurality along the axial length direction of the rod, and the mounting height of the mass block on the suspension rod is adjusted through the external threads, the bulges or the grooves with different heights.
Furthermore, the limiting structure comprises a clamping ring or a clamping block arranged on the sling, and the mass block is installed by connecting the clamping ring or the clamping block with the installation holes with different heights on the mass block;
the mass block is formed by stacking and connecting a plurality of plate-shaped units, mounting holes are symmetrically formed in the side portions of the plate-shaped units, and the mounting holes with different heights are formed after the plate-shaped units are stacked.
Furthermore, the limiting structure comprises a clamp arranged on the sling, and the clamp is connected with the mass block; the clamp is provided with a cavity for installing the rope winder, one end of the sling is connected to a winding drum of the rope winder, the other end of the sling is connected with the shell, the length of the sling is adjusted through the rope winder to adjust the height of the clamp, and therefore the installation height of the mass block on the sling is adjusted.
Further, a plurality of springs are arranged on the same horizontal plane, and the springs are arranged around the mass block in a symmetrical or asymmetrical mode.
Further, the damping case includes a case body containing the viscous body and an upper member inserted in the viscous body; the box body is arranged on the shell, the lower end of the upper member is inserted into the viscous body, the upper end of the upper member is connected with the mass block, and the upper member moves in the viscous body in the box body to generate damping force when vibrating.
Further, the upper member is a vertical rod, and one or more vertical rods inserted into the viscous body; when a plurality of vertical rods are adopted, a plurality of grids are arranged in the box body corresponding to the vertical rods, and each vertical rod is inserted into the grid filled with the viscous body.
Further, the eddy current damper comprises a permanent magnet, magnet back iron, a conductor plate and conductor back iron, wherein the permanent magnet is positioned between the magnet back iron and the conductor plate;
one side of the conductor back iron is arranged on the shell, and the other opposite side is provided with a conductor plate; the magnetic back iron is arranged on the mass block, the pair of permanent magnets are arranged on the surface of the magnetic back iron at intervals and are far away from the conductor plate, the magnetic poles of the permanent magnet pair are arranged in a mutually reversed mode, the conductor plate and the permanent magnets move relatively during vibration, and eddy current generated by the conductor plate cutting magnetic lines interacts with the permanent magnets to generate damping force for blocking the relative movement.
Further, the shell comprises a main body frame and a containment steel plate, the main body frame forms a framework of the shell, and the containment steel plate forms peripheral protection of the shell.
Furthermore, the mass block is formed by mixing one or more of steel, lead blocks, concrete, grouting materials and liquid.
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 damping box and the eddy current damper have the advantages of small mechanical abrasion, simple structure, low later maintenance requirement and strong applicability.
2) The mass system is directly hung on the sling/suspender, and meanwhile, the spring is arranged on the side surface to serve as an auxiliary stiffness system, so that the space is utilized to the maximum extent, the system can react in time when in small vibration, the sensitivity is good, and an extremely low lower limit value is provided for the damping device.
3) The stiffness and frequency of the damping device can be continuously adjusted. The swing length (namely the distance between the center of the mass block and the lifting point) can be adjusted through the limiting structure to continuously adjust the rigidity and the frequency, so that the frequency is continuously adjusted, and the adjusting mode is convenient, simple and effective.
4) The existence of the spring increases the adjustable frequency range, the frequency can be adjusted by replacing the spring, the size of the mass block does not need to be changed when the frequency is adjusted, and the vibration reduction effect is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a tuned mass damping device provided with a damping box according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a tuned mass damping device provided with an eddy current damper according to an embodiment of the present invention.
Fig. 3 is a schematic layout diagram of a spring as an auxiliary stiffness system according to an embodiment of the present invention.
Fig. 4 is a schematic view of the installation of the tuned mass damping device in a building according to an embodiment of the present invention.
Fig. 5 to fig. 7 are schematic structural diagrams of a limiting structure provided in the embodiment of the present invention.
Fig. 8 is a schematic structural view of a damper box with multiple vertical rods 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.
Description of reference numerals:
tuned mass damping device 100;
a housing 110;
a boom or sling 120, a boom 120a, external threads 121a, a sling 120b, a clasp/latch 122b, a clamp 123 b;
a damper 140;
a damping box 140b, a box body 141b, a containing cavity 142b, a vertical rod 143b, a viscous body 144b, a separation plate 145b and a grid 146 b;
an eddy current damper 140c, a permanent magnet 141c, a magnet back iron 142c, a conductor plate 143c, a conductor back iron 144 c;
a spring 160;
a communication tower 200;
the platform 210 is installed.
Detailed Description
The suspension type tuning mass damping device with a large adjustable range disclosed by the invention is further described in 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
A suspended tuned mass damping device 100 with a wide tunable range includes a housing 110, and a stiffness system, a mass 130, and a damper 140 disposed in the housing 110.
The stiffness system includes a primary stiffness system and a secondary stiffness system.
The primary stiffness system is a boom or sling 120, the boom or sling 120 acting as a suspension structure for the mass 130 may mount the mass 130 in the housing 110.
The secondary stiffness is a spring 160, the spring 160 being horizontally disposed between the mass 130 and the housing 110 for assisting the aforementioned boom or sling 120 to provide additional stiffness.
The suspension rod or the suspension rope 120 is provided with a limit structure for installing the mass 130, and the installation height of the mass 130 on the suspension rod or the suspension rope 120 can be adjusted through the limit structure, so that the vibration absorption frequency can be adjusted.
The damper 140 may be a damping chamber or an eddy current damper, as shown in fig. 1 and 2, respectively.
The damping box or the eddy current damper may be installed on the top, side or bottom of the mass 130, one end of the damping box or the eddy current damper is connected to the mass 130, and the other end is connected to the housing 110, and the mass 130 can swing in the housing 110 by using the suspension rod or the suspension rope 120 as a swing rod or a swing rope, and the damping box or the eddy current damper generates a damping force when swinging.
Preferably, in one embodiment, the damping chamber or eddy current damper is disposed at the bottom of the mass 130. Specifically, the upper portion of the damping box or eddy current damper is connected to the bottom of the mass 130, and the corresponding lower portion is connected to the housing.
When the damping box or the eddy current damper is disposed at the upper portion of the mass 130, considering that the suspension rod or the suspension rope 120 also needs to be installed at the bottom of the mass 130, it is preferable that the connection point of the suspension rod or the suspension rope 120 and the mass is disposed at the side of the mass 130, so as to facilitate the fixed installation of the damping box or the eddy current damper at the top of the mass 130. Alternatively, as another preferred way, the main structure of the damping box or eddy current damper is contoured in a ring shape through which the boom or sling 120 is connected to the mass 130.
In the present embodiment, one or more springs 160 as the auxiliary stiffness system are arranged on the same horizontal plane. A plurality of springs are mounted around the mass in a symmetrical or asymmetrical manner. Preferably, the plurality of springs 160 are arranged, and the plurality of springs 160 are uniformly installed around the mass 130 in a central symmetrical manner, as shown in fig. 3.
Considering the adjustment of the frequency and stiffness by the spring 160, the spring is detachably installed between the mass block and the inner wall of the housing, 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 harmonious mass damping device's peripheral skeleton and protective structure, and the attenuator is as harmonious mass damping device's damping system, and the quality piece directly hangs on hoist cable/jib through limit structure, thereby limit structure can adjust the position adjustment pendulum length of quality piece on hoist cable/jib, sets up the spring in the side simultaneously as supplementary rigidity system, and the at utmost has utilized the space, can in time react when less vibration, and sensitivity is high. And the damping box or the eddy current damper is adopted as the damper, so that the mechanical abrasion is small, the maintenance is convenient and the reliability is high.
Referring to fig. 4, taking the communication tower 200 as an example, for example, by adding one or more tuned mass dampers 100 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 tuned mass dampers 100 provide a force with a frequency close to or equal to 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 may be mounted on a communications tower 200 in a centrally symmetric fashion via a mounting platform 210, which, in conjunction with the cross-sectional view a-a in fig. 4, illustrates the manner in which 3 tuned mass damping devices 100 are provided.
When the suspension structure adopts a suspension rod, the limiting structure can comprise an external thread or a protrusion or a groove arranged on the surface of the suspension rod, and the thread or the protrusion or the groove is used for matching with the internal thread or the groove or the protrusion on the mass block so as to realize the fixed installation of the suspension rod and the mass block. The external threads, the bulges or the grooves are arranged in plurality along the axial length direction of the rod, and the mounting height of the mass block on the suspension rod is adjusted through the external threads, the bulges or the grooves with different heights.
Referring to fig. 5, illustrating a manner of using an external thread as a limiting structure, the lower half surface of the suspension rod 120a is provided with an external thread 121a, and a corresponding mass block 300 is provided with a threaded mounting hole, the internal thread 131 of the threaded mounting hole is matched with the external thread 121a, so that the mounting height of the mass block on the suspension rod 120a can be adjusted through rotation, the pendulum length can be adjusted by adjusting the distance from the center of the mass block to the suspension point, and thus, the continuous adjustment of rigidity and frequency is realized, and the adjustment manner is convenient, simple and effective.
When the suspension structure adopts a sling, the limiting structure can adopt a clamping ring/clamping block or a clamping structure.
In one embodiment, referring to fig. 6, the position limiting structure may include a snap ring/latch 122b disposed on the sling 120b, and the mass 130 is mounted through the connection of the snap ring/latch 122b and the mounting holes 132 of different heights on the mass 130.
The mass block 132 is preferably formed by stacking and connecting a plurality of plate-shaped units, wherein the plate-shaped units are symmetrically provided with mounting holes 132 at the sides, and the mounting holes 132 with different heights are formed after the plurality of plate-shaped units are stacked.
In another embodiment, as shown in fig. 7, the limit structure may include a clamp 123b provided on the sling, through which clamp 123b the mounting ring 133 on the mass 130 is connected in a clamping manner.
The clamp 123b is provided with a cavity, a rope winder is installed in the cavity, one end of the sling 120b is connected to a winding drum of the rope winder, and the other end of the sling 120b is fixedly connected to the shell 110. During operation, the length of the sling can be adjusted by rotating the winding drum of the rope winder, so that the height of the clamp is adjusted, and the installation height of the mass block on the sling is adjusted.
It should be noted that the structure of the above-mentioned limiting structure is preferable as a typical mode, and those skilled in the art should understand that the limiting structure can also be combined based on the above-mentioned structure or replaced by other conventional limiting elements in the field to realize the limiting function, and all belong to the protection scope of the present invention.
In one embodiment, the damper is a damper box. The damping box comprises a box body filled with a viscous body and an upper component inserted in the viscous body; the box body is arranged on the shell, the lower end of the upper member is inserted into the viscous body, the upper end of the upper member is connected with the mass block, and the upper member moves in the viscous body in the box body to generate damping force when vibrating.
Preferably, the lower portion of the housing is mounted to the housing, by way of example and not limitation, such as by bolts, clips and/or fasteners such as adhesive. A receiving chamber for receiving the viscous body is formed through the case. The viscous body is of a fluid or semi-fluid structure. An upper member inserted in the viscous body is provided corresponding to the housing chamber. 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 bottom of the mass block. When vibrating, the upper component moves in the viscous body in the box body to generate damping force, so that vibration energy is absorbed, and vibration reaction is reduced.
The upper member may be a pole, and the pole inserted into the viscous body may be provided in one or more number as required. In specific implementation, the vertical rod can be made of metal materials, wood materials or composite materials; the total length, the insertion length proportion (the ratio of the length in the viscous body to the total length) and the section form of the vertical rod can be flexibly arranged according to requirements 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 problem of loss of the viscous body caused by the open type arrangement, a liquid level alarm can be arranged to monitor the amount of the viscous body, and when the amount of the viscous body is lower than the preset scale mark, a reminding message is sent out through the hydraulic alarm to remind maintenance personnel to check and replenish the viscous body.
For the damping box structure with multiple vertical rods, independent grid cells are preferably arranged in the box body corresponding to each vertical rod, and each vertical rod is inserted into the grid cell filled with the viscous body.
Referring to fig. 8, 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 143b, an upper end of the vertical rod 143b is fixed by the housing 110, and a lower end of the vertical rod 143b 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 upright rod 143b moves in the viscous body 144b to generate damping force, so that the anti-vibration energy dissipation 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, 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 installed on the housing, and the other side opposite to the one side is provided with a conductor plate 143 c; the magnet back iron 142c is fixedly mounted on the mass, and a pair of permanent magnets 142c are mounted on the surface of the magnet back iron 142c at intervals and away from the conductor plate 143c (spaced 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 conductor plate is movably mounted on the surface of the conductor back iron, so that the distance between the conductor plate and the surface of the conductor back iron can be adjusted, the spacing distance between the conductor plate and the permanent magnet is adjusted, and the damping force is adjusted.
In another embodiment, the conductor back iron is movably mounted on the housing, so that the distance between the conductor back iron and the mass block can be adjusted, and the spacing distance between the conductor plate on the conductor back iron and the permanent magnet is adjusted to adjust the damping force.
In this embodiment, the housing 110 includes a main frame and a steel enclosure plate, the main frame forms a framework of the housing, and the steel enclosure plate forms a peripheral protection of the housing.
Specifically, the enclosure steel plate can include roof, bottom plate and side wall board, according to shell 110's shape, 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.
In this embodiment, the frequency of the damping device can be adjusted by adjusting the pendulum length (i.e., the distance between the center of the mass and the suspension point) or replacing the spring.
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 a sling/boom structure, taking the sling as an example, the calculation formula of the rigidity k is as follows:
wherein g is the acceleration of gravity; and L is the swing length, namely the distance between the center of the mass block and the lifting point.
By integrating the formulas (1) to (3), the final frequency calculation formula is obtained by calculation as follows
As can be seen from the formula (4), the frequency is related to the pendulum length, i.e., the frequency of the damping device can be adjusted by adjusting the pendulum length.
With the addition of spring 160, spring 160 provides additional stiffness, with spring stiffness k2, for a total stiffness as follows
k＝kSling/boom+k2 (5)
The final frequency calculation formula is obtained by combining the formulas, and the following steps are carried out
As can be seen from the formula (6), the frequency of the damping device can be adjusted by replacing the spring.
The mass block is formed by mixing one or more of steel, lead block, concrete, grouting material and liquid.
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 (10)
1. The utility model provides a harmonious mass damping device of suspension type that adjustable control range is big, includes the shell to and rigidity system, quality piece and the attenuator of setting in the shell, its characterized in that:
the stiffness system comprises a primary stiffness system and a secondary stiffness system; the primary stiffness system is a boom or sling that acts as a suspension structure for the mass mounting the mass in the housing; the auxiliary stiffness is a spring which is horizontally arranged between the mass block and the shell and is used for assisting the suspension rod or the suspension cable to provide additional stiffness;
the suspension rod or the suspension cable is provided with a limiting structure for installing a mass block, and the installation height of the mass block on the suspension rod or the suspension cable is adjusted through the limiting structure so as to adjust the vibration absorption frequency;
the damper is a damping box or an eddy current damper, the damping box or the eddy current damper is arranged at the top, the side or the bottom of the mass block, one end of the damping box or the eddy current damper is connected with the mass block, the other end of the damping box or the eddy current damper is connected with the shell, and the damping box or the eddy current damper generates damping force when the mass block swings in the shell by taking a suspension rod or a suspension rope as a swing rod or a swing rope.
2. The tuned mass damping device according to claim 1, wherein: the limiting structure comprises an external thread or a protrusion or a groove arranged on the surface of the hanging rod, and the thread or the protrusion or the groove is used for being matched with the internal thread or the groove or the protrusion on the mass block so as to realize the fixed installation of the hanging rod and the mass block;
the external threads, the bulges or the grooves are arranged in plurality along the axial length direction of the rod, and the mounting height of the mass block on the suspension rod is adjusted through the external threads, the bulges or the grooves with different heights.
3. The tuned mass damping device according to claim 1, wherein: the limiting structure comprises a clamping ring or a clamping block arranged on the sling, and the mass block is installed by connecting the clamping ring or the clamping block with the installation holes with different heights on the mass block;
the mass block is formed by stacking and connecting a plurality of plate-shaped units, mounting holes are symmetrically formed in the side portions of the plate-shaped units, and the mounting holes with different heights are formed after the plate-shaped units are stacked.
4. The tuned mass damping device according to claim 1, wherein: the limiting structure comprises a clamp arranged on the sling, and the mass block is connected with the clamp; the clamp is provided with a cavity for installing the rope winder, one end of the sling is connected to a winding drum of the rope winder, the other end of the sling is connected with the shell, the length of the sling is adjusted through the rope winder to adjust the height of the clamp, and therefore the installation height of the mass block on the sling is adjusted.
5. The tuned mass damping device according to claim 1, wherein: the springs are arranged on the same horizontal plane, and the springs are arranged around the mass block in a symmetrical or asymmetrical mode.
6. The tuned mass damping device according to claim 1, wherein: the damping box comprises a box body filled with a viscous body and an upper component inserted in the viscous body; the box body is arranged on the shell, the lower end of the upper member is inserted into the viscous body, the upper end of the upper member is connected with the mass block, and the upper member moves in the viscous body in the box body to generate damping force when vibrating.
7. The tuned mass damping device according to claim 6, wherein: the upper component is a vertical rod, and one or more vertical rods inserted into the viscous body; when a plurality of vertical rods are adopted, a plurality of grids are arranged in the box body corresponding to the vertical rods, and each vertical rod is inserted into the grid filled with the viscous body.
8. The tuned mass damping device according to claim 1, wherein: the eddy current damper comprises a permanent magnet, magnet back iron, a conductor plate and conductor back iron, wherein the permanent magnet is positioned between the magnet back iron and the conductor plate;
one side of the conductor back iron is arranged on the shell, and the other opposite side is provided with a conductor plate; the magnetic back iron is arranged on the mass block, the pair of permanent magnets are arranged on the surface of the magnetic back iron at intervals and are far away from the conductor plate, the magnetic poles of the permanent magnet pair are arranged in a mutually reversed mode, the conductor plate and the permanent magnets move relatively during vibration, and eddy current generated by the conductor plate cutting magnetic lines interacts with the permanent magnets to generate damping force for blocking the relative movement.
9. The tuned mass damping device according to claim 1, wherein: the shell comprises a main body frame and a containment steel plate, wherein the main body frame forms a framework of the shell, and the containment steel plate forms the peripheral protection of the shell.
10. The tuned mass damping device according to claim 1, wherein: the mass block is formed by mixing one or more of steel, lead block, concrete, grouting material and liquid.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609023A (en) * | 2023-07-21 | 2023-08-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Vibration control system of low-speed wind tunnel test model |
| CN117248647A (en) * | 2023-11-07 | 2023-12-19 | 道尔道科技股份有限公司 | Interval adjustable tuning mass damper |
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2019
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609023A (en) * | 2023-07-21 | 2023-08-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Vibration control system of low-speed wind tunnel test model |
| CN116609023B (en) * | 2023-07-21 | 2023-09-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Vibration control system of low-speed wind tunnel test model |
| CN117248647A (en) * | 2023-11-07 | 2023-12-19 | 道尔道科技股份有限公司 | Interval adjustable tuning mass damper |
| CN117248647B (en) * | 2023-11-07 | 2024-05-17 | 道尔道科技股份有限公司 | Interval adjustable tuning mass damper |
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Address after: 214104 Room 308, block C, Xidong chuangrong building, No. 88, Danshan Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Jiangu earthquake reduction and Isolation Technology Co.,Ltd. Address before: Room 1202t, No. 100, Guokang Road, Yangpu District, Shanghai 200092 Patentee before: SHANGHAI JIANGU DAMPING TECHNOLOGY CO.,LTD. |