CN106760847B - Full-assembly type frequency modulation mass damper - Google Patents
Full-assembly type frequency modulation mass damper Download PDFInfo
- Publication number
- CN106760847B CN106760847B CN201611186649.2A CN201611186649A CN106760847B CN 106760847 B CN106760847 B CN 106760847B CN 201611186649 A CN201611186649 A CN 201611186649A CN 106760847 B CN106760847 B CN 106760847B
- Authority
- CN
- China
- Prior art keywords
- mass block
- mass
- bottom plate
- vertical
- damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a fully assembled frequency modulation mass damper, wherein a plurality of mass blocks are connected into a whole through a connecting cylinder, and the mass blocks are connected with a bottom plate through damping elements and vertical springs; the damping element is positioned in the connecting cylinder, one end of the damping element is connected with the mass block at the upper end through a bolt, and the other end of the damping element is connected with the bottom plate through a bolt; a plurality of vertical springs are uniformly distributed between the mass block and the bottom plate, two ends of each vertical spring are spirally fixed on the mass block and the bottom plate through threaded connecting pieces respectively, the thread size of each threaded connecting piece is matched with the spiral size of each vertical spring, the effective number of turns of each vertical spring is changed by rotating the threaded connecting pieces, and the rigidity of each vertical spring can be adjusted; the outer circumference of the integral mass block is uniformly provided with guide grooves and is in guide sliding connection with a tubular column fixed between the bottom plate and the top plate through the guide grooves. The damper is convenient to process, short in manufacturing period, small in size, low in cost, small in space required by field debugging, convenient to frequency modulation and free of limitation of field space.
Description
Technical Field
The invention relates to a vibration reduction damper, in particular to a fully-assembled frequency modulation mass damper.
Background
A frequency modulated mass damper is one type of structural passive damping control system, which consists of a main structure and a substructure attached to the main structure, which contains the mass system, the support system (springs and dampers), and is typically suspended or supported on the structure.
The frequency-modulated mass damper has the working mechanism of 'dynamic braking', namely the motion of one mass block is used for controlling or weakening the motion of the other mass block, the self-vibration frequency of the frequency-modulated mass damper is close to the basic frequency or the excitation frequency of the main structure as much as possible by adjusting the dynamic characteristic, and when the main structure vibrates under the excitation action of an external load, the frequency-modulated mass damper generates an inertia force opposite to the vibration direction of the main structure to act on the main structure, so that the vibration reaction of the main structure is attenuated and controlled.
The existing frequency modulation mass damper has two problems. Firstly, the mass block is manufactured, because some frequency modulation mass dampers adopt the section steel concrete block as the mass block, the manufacturing period is long, the product volume is large, and the mass block is limited by the installation space, and other mass dampers adopt a certain number of steel plates as the mass block, but the steel plates are connected into a whole by welding, so the construction procedures are more, the processing cost is higher, and because the welding can be carried out only at the outer sides of the steel plates, the appearance quality is also influenced to a certain extent; secondly, although the existing frequency modulation mass damper is adjustable, the field operation is difficult, for example, in some pedestrian overpass projects, the frequency modulation mass damper is debugged in a steel box girder of an overpass after the overpass is formed, and when the height of the steel box girder is smaller, the frequency modulation is hardly operable by increasing (reducing) springs or increasing mass blocks in the field.
Therefore, based on the above problems, it is necessary to design an improved fully-assembled fm mass damper, which is convenient to process, short in manufacturing period, small in size, low in cost, small in space required for field debugging, convenient for fm operation, and free from the limitation of field space.
Disclosure of Invention
The invention aims to solve the problems and provides an improved fully-assembled frequency modulation mass damper which is convenient to process, short in manufacturing period, small in size, low in cost, small in space required by field debugging, convenient in frequency modulation operation and free from the limitation of field space.
The technical scheme of the invention is as follows: a fully-assembled frequency modulation mass damper comprises mass blocks, connecting cylinders, vertical springs, threaded connecting pieces, damping elements, a bottom plate, cylinder columns and a top plate, wherein the mass blocks are connected into a whole through the connecting cylinders; a plurality of vertical springs are uniformly distributed between the mass block at the upper end and the bottom plate, two ends of each vertical spring are respectively and spirally fixed on the mass block at the upper end and the bottom plate through threaded connecting pieces, the thread size of each threaded connecting piece is matched with the spiral size of each vertical spring, and the effective number of turns of each vertical spring is changed by rotating the threaded connecting pieces so as to adjust the rigidity of each vertical spring; the outer circumference of the integral mass block is uniformly provided with guide grooves and is in guide sliding connection with a tubular column fixed between the bottom plate and the top plate through the guide grooves.
The integral mass block is connected with the adjusting mass block through the connecting cylinder, and the adjusting mass block is connected with the connecting cylinder through threads.
The top plate is connected with the lower bottom plate through four round pipe columns by bolts, and the distance between the top plate and the mass block is larger than the maximum stroke of the integral mass block in a normal working state.
And an unbonded material layer is arranged on the contact guide surface between the cylindrical column and the integral mass block.
The mass block comprises the circular steel plate of trompil, and circular steel plate center is provided with the different round hole of a plurality of diameters, and the round hole diameter is greater than the diameter of damping element and vertical spring, is equipped with the full length internal thread along thick direction of board in this round hole to connect into a mass block whole through full length internal thread and connection drum, the inside vertical round hole that opens simultaneously of mass block has a certain amount, arranges vertical spring in the round hole, and the mass block supporting is on vertical spring.
The outer diameter of the connecting cylinder is the same as the diameter of a corresponding round hole in the mass block, full-length external threads are arranged along the outer cylindrical surface and are matched and connected with full-length internal threads of a round steel plate center round hole of the mass block, and the length of the connecting cylinder is larger than the total thickness of the whole mass block and is used for connecting and adjusting the mass block.
The invention has the beneficial effects that:
1. the invention adopts a fully-assembled manufacturing process and can adopt prefabricated standardized components, thereby having convenient processing, short period, small volume and lower cost;
2. the mass blocks can be increased in number through the cylinders with the threads, and the rigidity of the mass blocks can be adjusted through rotating the vertical springs, so that the required operation space is small during field debugging, and the frequency modulation operation is convenient.
3. According to the invention, the contact surface of the cylindrical columns and the mass block is made of the non-adhesive material, so that the mass block is ensured to keep vertical motion under the lateral restraint of the four cylindrical columns, a guide rod is avoided, and the economy is better.
Drawings
FIG. 1 is a cross-sectional view of a fully fabricated frequency modulated mass damper configuration of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a front cross-sectional view of the floor structure;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic diagram of a vertical FM mass damper system;
figure 6 is a schematic diagram of a horizontal fm mass damper system.
Detailed Description
The invention will be further described with reference to examples in the drawings to which:
as shown in fig. 1 to 4, the present invention comprises a mass 1, an adjusting mass 2, a connecting cylinder 3, a vertical spring 4, a threaded connector 5, a damping element 6, a bottom plate 7, a cylinder column 8, a top plate 9 and a non-adhesive material layer 10.
The mass blocks 1 are connected into a whole through the connecting cylinder 3, the integral mass block 1 is connected with the bottom plate 7 through the damping element 6 and the vertical spring 4, the damping element 6 is positioned in the connecting cylinder 3, one end of the damping element 6 is connected with the mass block 1 at the upper end through a bolt, and the other end of the damping element 6 is connected with the bottom plate 7 through a bolt; a plurality of vertical springs 4 are uniformly distributed between the mass block 1 at the upper end and the bottom plate 7, two ends of each vertical spring 4 are respectively and spirally fixed on the mass block 1 at the upper end and the bottom plate 7 through threaded connecting pieces 5, the thread size of each threaded connecting piece 5 is matched with the spiral size of each vertical spring 4, and the effective number of turns of each vertical spring 4 is changed by rotating the threaded connecting pieces 5 so as to adjust the rigidity of each vertical spring 4; the outer circumference of the integral mass block 1 is uniformly provided with guide grooves, and the integral mass block is in guide sliding connection with a tubular column 8 fixed between a bottom plate 7 and a top plate 9 through the guide grooves.
The top plate 9 is connected with the lower bottom plate 7 through four tubular columns 8 by bolts, and the distance between the top plate 9 and the mass block 1 and the distance between the bottom plate 7 and the mass block 1 are larger than the maximum stroke of the integral mass block 1 in a normal working state.
The contact guide surface between the cylindrical column 8 and the integral mass block 1 is provided with a non-adhesive material layer 10.
The mass block 1 is composed of a perforated circular steel plate, the center of the circular steel plate is provided with a certain number of round holes with diameters, the diameters of the round holes are larger than the diameters of the damping elements and the vertical springs, full-length internal threads are arranged in the round holes in the thickness direction, the round holes are connected with the connecting cylinders 3 through the full-length internal threads to form a mass block whole, the vertical round holes with the certain number are simultaneously opened in the mass block 1, the vertical springs 4 are arranged in the round holes, and the mass block 1 is supported on the vertical springs 4.
The outer diameter of the connecting cylinder is the same as the diameter of a corresponding round hole in the mass block, full-length external threads are arranged along the outer cylindrical surface and are matched and connected with full-length internal threads of a round steel plate center round hole of the mass block 1, and the length of the connecting cylinder is larger than the total thickness of the whole mass block 1 and is used for connecting and adjusting the mass block.
The mass block 1 is connected into a whole through the connecting cylinder 3, the mass block 2 for adjustment can be added according to needs, and the mass block 1 and the connecting cylinder 3, and the mass block 2 for adjustment and the connecting cylinder 3 are spliced in a threaded mode.
The top plate 9 is bolted to the lower bottom plate 7 by four circular columns 8 and is disconnected from the mass 1, the damping elements 6 and the vertical springs 4. The distance between the top plate 9 and the mass 1 and the distance between the bottom plate 7 and the mass 1 need to satisfy the maximum stroke requirement which is larger than that which can occur when the mass 1 is in a normal working state. The maximum stroke of the mass block 1 is obtained by a designer according to the elastic time course analysis of the structure, and the maximum displacement of the mass block can be obtained according to the time course analysis result. In order to ensure that the frequency-modulated mass damper of the invention still works normally when the mass block moves to the maximum and avoid the mass block from colliding with the top plate or the bottom plate when the mass block moves to the maximum to cause the damage of the top plate or the bottom plate, the distance between the top plate 9 and the mass block 1 and the distance between the bottom plate 7 and the mass block 1 need to be larger than the maximum stroke requirement which can occur when the mass block 1 works normally.
The working principle of the invention is as follows:
the invention realizes the full-assembly manufacturing process of the frequency modulation mass damper by adopting the constructional measures of bolt connection and thread splicing. The mass block is connected with the round steel plate into a whole through the threaded connection cylinder, and the connection cylinder has a remaining length, so that an additional mass block can be added during field debugging; the vertical spring is rotationally fixed on the mass block and the bottom plate through the threaded connecting piece, the thread size is matched with the spring, and the threaded connecting piece can still rotate through the bolt on the lower portion of the bottom plate after being connected with the bottom plate, so that the effective number of turns of the vertical spring is changed, and the effect of adjusting the rigidity of the vertical spring is achieved. In addition, the contact surface of the cylindrical columns and the mass block is made of an unbonded material, so that the mass block is guaranteed to keep vertical movement under the lateral restraint of the four cylindrical columns, and the function of a guide rod is achieved.
The damper of the invention has the following use process:
a Tuned Mass Damper system (TMD) is a type of structural passive damping control system that consists of a main structure and a substructure attached to the main structure that contains the Mass, a support system (springs and dampers), and is typically suspended or supported on the structure.
The TMD system works by 'dynamic braking', namely the motion of one mass block is used for controlling or weakening the motion of the other mass block, the self-vibration frequency of the TMD system is close to the basic frequency or the excitation frequency of the main structure as much as possible by adjusting the dynamic characteristics of the TMD system, when the main structure vibrates under the excitation action of an external load, the TMD system generates an inertia force opposite to the vibration direction of the main structure to act on the main structure, and therefore the vibration reaction of the main structure is attenuated and controlled. Generally, according to the different damping directions, there are vertical TMDs and horizontal TMDs, as shown in fig. 5 and 6, respectively.
Claims (6)
1. The utility model provides a full assembled frequency modulation mass damper, includes quality piece (1), connection drum (3), vertical spring (4), threaded connection spare (5), damping element (6), bottom plate (7), cylinder post (8), roof (9), its characterized in that: the mass blocks (1) are connected into a whole through the connecting cylinder (3), the integral mass blocks (1) are connected with the bottom plate (7) through the damping elements (6) and the vertical springs (4), the damping elements (6) are positioned in the connecting cylinder (3), one end of each damping element (6) is connected with the mass block (1) at the upper end through a bolt, and the other end of each damping element (6) is connected with the bottom plate (7) through a bolt; a plurality of vertical springs (4) are uniformly distributed between the mass block (1) at the upper end and the bottom plate (7), two ends of each vertical spring (4) are respectively and spirally fixed on the mass block (1) at the upper end and the bottom plate (7) through a threaded connecting piece (5), the thread size of each threaded connecting piece (5) is matched with the spiral size of each vertical spring (4), and the effective number of turns of each vertical spring (4) is changed by rotating the threaded connecting pieces (5) so as to adjust the rigidity of the vertical springs (4); guide grooves are uniformly distributed on the outer circumference of the integral mass block (1) and are in guide sliding connection with a tubular column (8) fixed between the bottom plate (7) and the top plate (9) through the guide grooves.
2. The unitary, fully-assembled fm mass damper of claim 1, wherein: the integral mass block (1) is connected with the adjusting mass block (2) through the connecting cylinder (3), and the adjusting mass block (2) is connected with the connecting cylinder (3) through threads.
3. The unitary, fully-assembled fm mass damper of claim 1, wherein: the top plate (9) is connected with the lower bottom plate (7) through four circular pipe columns (8) through bolts, and the distance between the top plate (9) and the mass block (1) and the distance between the bottom plate (7) and the mass block (1) are larger than the maximum stroke of the integral mass block (1) in a normal working state.
4. The unitary, fully-assembled fm mass damper of claim 1, wherein: and an unbonded material layer (10) is arranged on a contact guide surface between the cylindrical column (8) and the integral mass block (1).
5. The unitary, fully-assembled fm mass damper of claim 1, wherein: the mass block (1) is composed of a perforated circular steel plate, a plurality of round holes with different diameters are formed in the circular steel plate, the diameter of each round hole is larger than that of the damping element and the vertical spring, full-length internal threads are arranged in each round hole in the thickness direction of the plate, the round holes are connected with the connecting cylinders (3) through the full-length internal threads to form a mass block whole, a plurality of vertical round holes are simultaneously formed in the mass block (1), the vertical springs (4) are arranged in the round holes, and the mass block (1) is supported on the vertical springs (4).
6. A unitary, fully-assembled FM mass damper as claimed in claim 5, wherein: the outer diameter of the connecting cylinder (3) is the same as the diameter of a corresponding round hole in the mass block (1), full-length external threads are arranged along the outer cylindrical surface and are matched and connected with full-length internal threads of a round steel plate center round hole of the mass block (1), and the length of the connecting cylinder (3) is larger than the total thickness of the whole mass block (1) and is used for connecting the mass block (2) for adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186649.2A CN106760847B (en) | 2016-12-20 | 2016-12-20 | Full-assembly type frequency modulation mass damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186649.2A CN106760847B (en) | 2016-12-20 | 2016-12-20 | Full-assembly type frequency modulation mass damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106760847A CN106760847A (en) | 2017-05-31 |
| CN106760847B true CN106760847B (en) | 2022-03-08 |
Family
ID=58893952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611186649.2A Active CN106760847B (en) | 2016-12-20 | 2016-12-20 | Full-assembly type frequency modulation mass damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106760847B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481359B (en) * | 2018-02-28 | 2020-10-30 | 北京航空航天大学 | Compact type rigidity-variable series elastic driving joint |
| CN110848372B (en) * | 2019-12-13 | 2024-04-09 | 无锡钟山环境工程科技有限公司 | Vibration absorbing device with adjustable infinitely variable speed |
| CN117248647B (en) * | 2023-11-07 | 2024-05-17 | 道尔道科技股份有限公司 | Interval adjustable tuning mass damper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6681908B2 (en) * | 2002-01-08 | 2004-01-27 | Honeywell International, Inc. | Adjustable tuned mass damper |
| CN101457553B (en) * | 2007-12-14 | 2012-01-11 | 尹学军 | Spring stiffness adjustable tuning quality damper |
| CN201835397U (en) * | 2010-08-26 | 2011-05-18 | 北京市建筑设计研究院 | TMD (tuned mass damper) device |
| CN104727456B (en) * | 2015-03-19 | 2017-03-01 | 河南城建学院 | A kind of three-dimensional shock-absorption quality tuned damper |
| CN206319685U (en) * | 2016-12-20 | 2017-07-11 | 上海史狄尔建筑减震科技有限公司 | Full assembled tuned mass damper, TMD |
-
2016
- 2016-12-20 CN CN201611186649.2A patent/CN106760847B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106760847A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106760847B (en) | Full-assembly type frequency modulation mass damper | |
| CN103437447B (en) | Low-frequency swing-type tuned mass damper | |
| EP1008747B1 (en) | Vibration absorber for wind turbines | |
| CN104763070B (en) | Suspension multidimensional collisional quenching antivibrator | |
| CN203499047U (en) | Low-frequency pendulum type tuned mass damper | |
| CN107419816B (en) | Vibration damper for controlling three-dimensional translation and torsion direction thereof | |
| CN202611007U (en) | Vibration attenuation control device of suspension type tuned mass damper | |
| CN104631322B (en) | A kind of passive spring-damper negative stiffness antivibrator of pulling cable damping | |
| CN104132090B (en) | A kind of change pendulum length formula tuned mass damper | |
| CN103255704B (en) | Steel damper anti-collision and anti-girder-dropping device | |
| CN105975730A (en) | Multi-tuned mass damper vibration absorption design method for arc-shaped steel gate | |
| KR101166258B1 (en) | Vibration control device of construction structure | |
| CN102587273A (en) | Method for enabling horizontal friction of support to be variable | |
| CN101806104A (en) | Suspended frequency modulation mass damper | |
| CN108612917A (en) | A kind of vertical vibration damping antidetonation suspension and support based on disk spring | |
| CN112160439A (en) | Swinging tuned mass damper | |
| CN106907043B (en) | Suspension mass pendulum vibration reduction system with arc-shaped support | |
| CN202658759U (en) | Tuned mass damper | |
| CN111041976A (en) | Multistage energy consumption device of building structure antidetonation damping | |
| CN107268819A (en) | A kind of multidimensional resistance dissipative damping device | |
| CN113062648A (en) | Circumferential tensile limiting self-resetting shock insulation support and design method | |
| CN201027352Y (en) | Self-reset hyperelastic shape memory alloy deoscillator | |
| CN102936874A (en) | Shear type rubber damper with cable fastening device | |
| CN206319685U (en) | Full assembled tuned mass damper, TMD | |
| CN201660980U (en) | Suspended frequency modulation mass damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |